JP2022048770A

JP2022048770A - Resistance application device

Info

Publication number: JP2022048770A
Application number: JP2020154777A
Authority: JP
Inventors: 輝信飯田; Terunobu Iida
Original assignee: Origin Co Ltd
Current assignee: Origin Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2022-03-28
Anticipated expiration: 2040-09-15
Also published as: JP7235704B2

Abstract

To provide a resistance application device which applies resistance torque at an arbitrary angular range with a simple structure, with respect to a rotor rotatable in a required angular range.SOLUTION: An axial direction one side end part of a rotor 4 is inserted in a fixed housing 20, thereby, the movement of the rotor in a circumferential direction is allowed but the movement in an axial direction is restricted. In the housing, a friction plate 36 adjacent to the rotor in the axial direction is also disposed, thereby, the movement of the friction plate in the circumferential direction is restricted but the movement in the axial direction is allowed. The friction plate is energized toward the rotor by a spring member 52. At the rotor opposing to the axial direction and an axial direction end surface of the friction plate, a one side protrusion part 12 and the other side protrusion part 46 protruding in the axial direction respectively are extended in the circumferential direction. By the rotation of the rotor, the one side protrusion part is moved between a first region where it is overlapped with the other side protrusion part when viewed in the axial direction and a second region where both are separated in the circumferential direction, and when the one side protrusion part is in the first region, the axial direction end surfaces of the one side protrusion part and the other side protrusion part are brought into a close contact.SELECTED DRAWING: Figure 2

Description

本発明は、所要角度範囲内において回転可能な回転体に対して抵抗トルクを付与する抵抗付与装置に関する。 The present invention relates to a resistance applying device that applies resistance torque to a rotating body that can rotate within a required angle range.

従来から、付勢されて進退するデッドボルトを備えた施錠機構が周知である。下記特許文献１には、上記施錠機構の一例が示されており、これについて図７を参照して説明する。特許文献１に示された施錠機構をＸとすると、図７（ａ）は施錠機構Ｘの開錠時の、図７（ｂ）は施錠機構Ｘの施錠時の状態を夫々示す図である。 Conventionally, a locking mechanism equipped with a dead bolt that is urged to move forward and backward is well known. The following Patent Document 1 shows an example of the locking mechanism, which will be described with reference to FIG. 7. Assuming that the locking mechanism shown in Patent Document 1 is X, FIG. 7A is a diagram showing a state when the locking mechanism X is unlocked, and FIG. 7B is a diagram showing a state when the locking mechanism X is locked.

施錠機構ＸはデッドボルトＤＢの他に、合鍵が差し込まれて合鍵の操作力によって回転駆動する所謂だるまＲＭ及びだるまＲＭを付勢する付勢手段ＨＭを備えている。だるまＲＭは自身の回転中心から径方向外方に延びる駆動腕ＫＡを備えており、だるまＲＭが回転駆動することで駆動腕ＫＡも旋回動する。駆動腕ＫＡの先端部はデッドボルトＤＢに形成された凹部ＣＰ内に位置しここでデッドボルドＤＢと係合可能であり、だるまＲＭが旋回して駆動腕ＫＡの先端部がデッドボルトＤＢと係合することで、デッドボルトＤＢは進退させられる。付勢手段ＨＭは十手形状の押し下げ部材ＰＭを備えており、押し下げ部材ＰＭの基端部は枢支ピンＲＰによってだるまＲＭの駆動腕ＫＡの先端部に回転可能に連結されている。押し下げ部材ＰＭの先端部は旋回可能に起立した支持軸ＳＳの支持穴ＳＨに挿通されており、だるまＲＭが回転すると押し下げ部材ＰＭは支持軸ＳＳを中心に旋回すると共に支持軸ＳＳの支持穴ＳＨに対して進退もする。このとき、押し下げ部材ＰＭの棒心部にはばね部材Ｓが挿通され、ばね部材Ｓは片端が支持軸ＳＳの外周面に当接することから、押し下げ部材ＰＭには支持軸ＳＳから離隔する方向に反発力が付与されることとなる。これにより、だるまＲＭが図７（ａ）において時計方向に回動する際には、駆動腕ＫＡと押し下げ部材ＰＭとを連結する枢支ピンＲＰがだるまＲＭの回転中心と支持軸ＳＳとを結ぶ直線Ｌ（二点鎖線）を越えるまでは、だるまＲＭは付勢手段ＨＭによって反時計方向、つまりだるまＲＭの回転方向とは反対方向に付勢される。一方、枢支ピンＲＰが上記直線Ｌを越えて時計方向に回転するとだるまＲＭは付勢手段ＨＭによって時計方向、つまりだるまＲＭの回転方向と同一の方向に付勢される。だるまＲＭが時計方向に付勢されて回転するとデッドボルトＤＢも付勢されて進出し、デッドボルトＤＢは制限突起ＰＳとガイド溝ＧＧとが係合することで停止する。特許文献１に開示されたような施錠機構にあっては、合鍵の操作力によってだるまＲＭが回転駆動した際には、施錠を確実なものとするべくデッドボルトＤＢは中途の位置で停止することなく予め設定された進出量を確実に進出することが要求される。それ故に、デッドボルトＤＢは付勢されて進出する。 In addition to the deadbolt DB, the locking mechanism X includes a so-called Daruma RM and an urging means HM that urge the Daruma RM to be rotationally driven by the operating force of the master key. The Daruma RM is equipped with a drive arm KA extending radially outward from the center of rotation of the Daruma RM, and the drive arm KA also swivels when the Daruma RM is rotationally driven. The tip of the drive arm KA is located in the recess CP formed in the dead bolt DB and can engage with the dead boulder DB, where the Daruma RM turns and the tip of the drive arm KA engages with the dead bolt DB. By doing so, the deadbolt DB can be advanced or retreated. The urging means HM includes a ten-handed push-down member PM, and the base end portion of the push-down member PM is rotatably connected to the tip end portion of the drive arm KA of the Daruma RM by a pivot pin RP. The tip of the push-down member PM is inserted into the support hole SH of the support shaft SS that stands upright so that it can rotate. When the Daruma RM rotates, the push-down member PM turns around the support shaft SS and the support hole SH of the support shaft SS. It also advances and retreats. At this time, the spring member S is inserted through the rod core portion of the push-down member PM, and one end of the spring member S comes into contact with the outer peripheral surface of the support shaft SS, so that the push-down member PM is separated from the support shaft SS. Repulsive force will be given. As a result, when the Daruma RM rotates clockwise in FIG. 7A, the pivot pin RP connecting the drive arm KA and the pushing member PM connects the rotation center of the Daruma RM and the support shaft SS. Until the straight line L (two-point chain line) is crossed, the Daruma RM is urged by the urging means HM in the counterclockwise direction, that is, in the direction opposite to the rotation direction of the Daruma RM. On the other hand, when the pivot pin RP rotates clockwise beyond the straight line L, the Daruma RM is urged clockwise by the urging means HM, that is, in the same direction as the rotation direction of the Daruma RM. When the Daruma RM is urged clockwise and rotates, the deadbolt DB is also urged and advances, and the deadbolt DB stops when the limiting protrusion PS and the guide groove GG engage with each other. In the locking mechanism as disclosed in Patent Document 1, when the Daruma RM is rotationally driven by the operating force of the master key, the deadbolt DB is stopped at an intermediate position in order to secure the locking. It is required to surely advance the preset amount of advancement. Therefore, the deadbolt DB is urged to advance.

特開２０１２－７７５８６号公報Japanese Unexamined Patent Publication No. 2012-77586

特許文献１に開示されたような施錠機構では、上述したとおりの理由によりデッドボルトＤＢは付勢されて進出することから、制限突起ＰＳとガイド溝ＧＧとが係合する際には衝突音が生じる。かかる衝突音を減少させるべく、施錠機構ＸではデッドボルトＤＢはラックアンドピニオン方式によってオイルダンパーＯＤに接続され、デッドボルトＤＢには抵抗トルクが付与されている。而して、施錠機構Ｘにあっては、デッドボルトＤＢはオイルダンパーＯＤから常時抵抗トルクが付与されていることに起因してデッドボルトＤＢが中途の位置で停止してしまうことがある。これは、デッドボルトＤＢの進出工程の終盤では付勢手段ＨＭによる付勢は弱いにも拘わらずオイルダンパーＯＤによって抵抗トルクが付与されるためである。 In the locking mechanism as disclosed in Patent Document 1, since the dead bolt DB is urged to advance for the reason as described above, a collision noise is generated when the limiting protrusion PS and the guide groove GG engage with each other. Occurs. In the locking mechanism X, the deadbolt DB is connected to the oil damper OD by a rack and pinion method in order to reduce the collision noise, and a resistance torque is applied to the deadbolt DB. Therefore, in the locking mechanism X, the deadbolt DB may stop at an intermediate position due to the constant resistance torque being applied from the oil damper OD. This is because the resistance torque is applied by the oil damper OD even though the urging by the urging means HM is weak at the final stage of the advance process of the dead bolt DB.

また、オイルダンパーＯＤは内部にシリコンオイル等の比較的粘性の高い流体が封入されたハウジングと、ハウジングに回転自在に装着された回転部材とを備えており、流体の粘性抵抗により回転部材の回転に対して逆向きの抵抗トルクを回転部材に作用させるものであることから、封入した流体が外部に漏洩するリスクがある。更に、一般的に流体の粘性抵抗は温度によって変化することから、気温の高い夏場と気温の低い冬場とではオイルダンパーが付与する抵抗トルクが変化してしまう。 Further, the oil damper OD includes a housing in which a relatively highly viscous fluid such as silicon oil is sealed inside, and a rotating member rotatably mounted on the housing, and the rotating member rotates due to the viscous resistance of the fluid. Since the resistance torque in the opposite direction is applied to the rotating member, there is a risk that the enclosed fluid leaks to the outside. Further, since the viscous resistance of a fluid generally changes depending on the temperature, the resistance torque given by the oil damper changes between the summer when the temperature is high and the winter when the temperature is low.

本発明は上記事実に鑑みてなされたものであり、その主たる技術的課題は、所要角度範囲内において回転可能な回転体に対し、オイルダンパーによらず簡単な構造で所要角度範囲中の任意の角度範囲においてのみ抵抗トルクを付与することが可能な新規の抵抗付与装置を提供することである。念のため付言すると、上記技術的課題は、特許文献１に開示されたような施錠機構のみならず種々の工作機械や機械装置等においても発生しうる。 The present invention has been made in view of the above facts, and the main technical problem thereof is to any rotating body that can rotate within a required angle range with a simple structure regardless of an oil damper and within the required angle range. It is an object of the present invention to provide a novel resistance applying device capable of applying a resistance torque only in an angular range. As a reminder, the above technical problem may occur not only in the locking mechanism disclosed in Patent Document 1 but also in various machine tools, mechanical devices and the like.

本発明よれば、上記主たる技術的課題を解決することができる抵抗付与装置として、所要角度範囲内において回転可能な回転体に対して抵抗トルクを付与する抵抗付与装置であって、
前記回転体の少なくとも軸方向片側端部は固定のハウジング内に挿入され、前記回転体は前記ハウジングによって周方向の移動は許容されるが軸方向の移動は規制されており、
前記ハウジング内には更に前記回転体と軸方向に隣接する摩擦板が配設されており、前記摩擦板は前記ハウジングによって周方向の移動は規制されるが軸方向の移動は許容され、前記摩擦板はばね部材によって前記回転体に向かって付勢されており、
軸方向に対向する前記回転体及び前記摩擦板の軸方向端面には夫々軸方向に突出する片側突出部及び他側突出部が周方向に延在しており、
前記回転体が回転すると、前記片側突出部は軸方向に見て前記他側突出部と重なる第一の領域から両者が周方向に離隔する第二の領域へ又は前記第二の領域から前記第一の領域へ移動し、前記片側突出部が前記第一の領域にあるときには、前記片側突出部及び前記他側突出部の軸方向端面が密接して前記回転体には前記抵抗トルクが付与される、ことを特徴とする抵抗付与装置が提供される。 According to the present invention, as a resistance applying device capable of solving the above-mentioned main technical problem, it is a resistance applying device that applies resistance torque to a rotating body that can rotate within a required angle range.
At least one end of the rotating body in the axial direction is inserted into a fixed housing, and the rotating body is allowed to move in the circumferential direction by the housing, but the movement in the axial direction is restricted.
A friction plate adjacent to the rotating body in the axial direction is further disposed in the housing, and the friction plate is restricted from moving in the circumferential direction by the housing, but is allowed to move in the axial direction, and the friction is allowed. The plate is urged toward the rotating body by a spring member, and the plate is urged toward the rotating body.
One-sided protrusions and other-side protrusions protruding in the axial direction extend in the circumferential direction on the axial end faces of the rotating body and the friction plate facing each other in the axial direction.
When the rotating body rotates, the one-sided protrusion moves from the first region overlapping the other-side protrusion in the axial direction to the second region separated from each other in the circumferential direction, or from the second region to the second region. When moving to one region and the one-side protrusion is in the first region, the axial end faces of the one-side protrusion and the other-side protrusion are in close contact with each other, and the resistance torque is applied to the rotating body. A resistance applying device is provided.

好ましくは、前記所要角度範囲の大きさは１８０度よりも小さく、前記片側突出部及び前記他側突出部は夫々直径方向の反対側に一対ずつ設けられている。前記回転体には軸方向に突出する規制突起が、前記摩擦板には前記所要角度範囲の大きさと対応して周方向に延在する規制凹所が夫々形成されており、前記規制突起は前記規制凹所に進入するのが好適である。前記片側突出部及び前記他側突出部のいずれか一方又はその両方の周方向一方端には、周方向一方に向かって軸方向突出量が漸次低減する傾斜部が接続されているのがよい。 Preferably, the size of the required angle range is smaller than 180 degrees, and the one-side projecting portion and the other-side projecting portion are each provided in pairs on opposite sides in the diametrical direction. The rotating body is formed with a restricting protrusion protruding in the axial direction, and the friction plate is formed with a restricting recess extending in the circumferential direction corresponding to the size of the required angle range. It is preferable to enter the regulated recess. It is preferable that an inclined portion whose axial protrusion amount gradually decreases toward one of the circumferential directions is connected to one end of either one or both of the one-side protrusion and the other side protrusion.

本発明の抵抗付与装置では、軸方向に対向する回転体及び摩擦板の軸方向端面には夫々軸方向に突出する片側突出部及び他側突出部が周方向に延在しており、回転体が回転すると、片側突出部は軸方向に見て他側突出部と重なる第一の領域から両者が周方向に離隔する第二の領域へ又は第二の領域から第一の領域へ移動する。摩擦板はばね部材によって回転体に向かって付勢されていることから、片側突出部が第一の領域にあるときには、片側突出部及び他側突出部の軸方向端面は相互に密接して回転体には抵抗トルクが付与される。従って、所要角度範囲内において回転可能な回転体に対し、簡単な構造で上記所要角度範囲中の任意の角度範囲においてのみ抵抗トルクを付与することが可能となる。 In the resistance applying device of the present invention, one-sided protrusions and other-side protrusions projecting in the axial direction extend in the circumferential direction on the axial end faces of the rotating body and the friction plate facing each other in the axial direction. When the one-sided protrusion is rotated, the one-sided protrusion moves from the first region overlapping the other-side protruding portion in the axial direction to the second region in which the two are separated in the circumferential direction, or from the second region to the first region. Since the friction plate is urged toward the rotating body by the spring member, when the one-side protrusion is in the first region, the axial end faces of the one-side protrusion and the other-side protrusion rotate in close contact with each other. Resistance torque is applied to the body. Therefore, it is possible to apply a resistance torque to a rotating body that can rotate within a required angle range only in an arbitrary angle range within the required angle range with a simple structure.

本願発明に従って構成された抵抗付与装置の全体構成を示す図。The figure which shows the whole structure of the resistance-imparting apparatus configured according to the invention of this application. 図１に示す抵抗付与装置の分解斜視図。An exploded perspective view of the resistance applying device shown in FIG. 1. 図１に示す抵抗付与装置の回転体を単体で示す図。The figure which shows the rotating body of the resistance applying device shown in FIG. 1 by itself. 図１に示す抵抗付与装置のハウジングを単体で示す図。The figure which shows the housing of the resistance applying device shown in FIG. 1 by itself. 図１に示す抵抗付与装置の摩擦板を単体で示す図。The figure which shows the friction plate of the resistance applying device shown in FIG. 1 by itself. 図１に示す抵抗付与装置の作動を説明する図。The figure explaining the operation of the resistance applying device shown in FIG. 従来の施錠機構を示す図。The figure which shows the conventional locking mechanism.

以下、本発明に従って構成された抵抗付与装置の好適実施形態を図示している添付図面を参照して、更に詳細に説明する。なお、以下の説明における「軸方向片側」及び「軸方向他側」とは、特に指定しない限り、図１のＡ－Ａ断面に示される状態を基準として、「軸方向片側」は同図において左側を、「軸方向他側」は同図において右側のことを言う。 Hereinafter, description will be made in more detail with reference to the accompanying drawings illustrating preferred embodiments of the resistance applying device configured according to the present invention. Unless otherwise specified, "one side in the axial direction" and "the other side in the axial direction" in the following description are referred to in the same figure as "one side in the axial direction" with reference to the state shown in the AA cross section of FIG. The left side and the "other side in the axial direction" refer to the right side in the figure.

図１を参照して説明すると、本発明に従って構成された全体を符号２で示す抵抗付与装置は、中心軸ｏの周りを回転可能な回転体４を備えている。図１と共に図２及び図３を参照して説明すると、回転体４は全体的に円筒形状であって、軸方向他側端部には例えばラックアンドピニオン方式によってデッドボルトに接続される接続部６が設けられている。図示の実施形態においては、接続部６は回転体４の軸方向他側端面から軸方向に突出する一対の接続突出片８と回転体４の軸方向他側端面において局所的に凹んだ一対の接続凹所１０とから構成されている。一対の接続突出片８の各々及び一対の接続凹所１０の各々は共に直径方向の反対側に位置し、接続突出片８と接続凹所１０とは９０度の角度間隔で配置されている。回転体４の軸方向片側端面には、軸方向に突出する片側突出部１２が周方向に延在している。図３の上段左側図では容易に理解できるよう片側突出部１２には薄墨を付して示している。主に図３の上段左側図を参照して説明すると、図示の実施形態においては、片側突出部１２は直径方向の反対側に一対設けられている。一対の片側突出部１２の各々は中心角が３５度の扇形状であり後述する他側突出部４６よりも周方向幅は狭い。そして、一対の片側突出部１２の各々の反時計方向側端には、反時計方向に向かって軸方向突出量が漸次低減する片側傾斜部１４が接続されている。片側傾斜部１４は直線状に延在している。図３の下段左側図も参照することによって理解されるとおり、回転体４の軸方向片側端面には更に、軸方向に突出する規制突起１６が形成されている。規制突起１６は周方向に見て一対の片側突出部１２の各々の中間に１つ配置されており、その断面は中心角が４０度の扇形状である。回転体４の軸方向片側端部の外周面には径方向外方に突出する円環形状の係止突条１８が形成されている。 Explaining with reference to FIG. 1, the resistance-imparting device configured according to the present invention as shown by reference numeral 2 includes a rotating body 4 that can rotate around the central axis o. Explaining with reference to FIGS. 2 and 3 together with FIG. 1, the rotating body 4 has a cylindrical shape as a whole, and a connection portion connected to a dead bolt at the other end in the axial direction, for example, by a rack and pinion method. 6 is provided. In the illustrated embodiment, the connecting portion 6 is a pair of connecting projecting pieces 8 projecting axially from the axial other end surface of the rotating body 4 and a pair of locally recessed portions on the axial other end surface of the rotating body 4. It is composed of a connection recess 10. Each of the pair of connecting protrusions 8 and each of the pair of connecting recesses 10 are located on opposite sides in the radial direction, and the connecting protrusions 8 and the connecting recesses 10 are arranged at an angular interval of 90 degrees. On the one-sided end face in the axial direction of the rotating body 4, a one-sided protruding portion 12 projecting in the axial direction extends in the circumferential direction. In the upper left view of FIG. 3, the one-side protruding portion 12 is shown with a light ink so that it can be easily understood. Explaining mainly with reference to the upper left side view of FIG. 3, in the illustrated embodiment, a pair of one-side protruding portions 12 are provided on the opposite sides in the diametrical direction. Each of the pair of one-side protruding portions 12 has a fan shape with a central angle of 35 degrees, and has a narrower circumferential width than the other-side protruding portions 46 described later. A one-sided inclined portion 14 whose axial protrusion amount gradually decreases in the counterclockwise direction is connected to each of the counterclockwise side ends of the pair of one-sided protrusions 12. The one-sided inclined portion 14 extends linearly. As understood by referring to the lower left side view of FIG. 3, a restricting protrusion 16 projecting in the axial direction is further formed on the one-sided end surface of the rotating body 4 in the axial direction. One regulating protrusion 16 is arranged in the middle of each of the pair of one-sided protrusions 12 when viewed in the circumferential direction, and the cross section thereof has a fan shape with a central angle of 40 degrees. An annular locking ridge 18 is formed on the outer peripheral surface of the axial one-sided end of the rotating body 4 so as to project outward in the radial direction.

図１に示すとおり、上述した回転体４の軸方向片側端部はハウジング２０に挿入される。ハウジング２０について図１と共に図２及び図４を参照して説明すると、ハウジング２０は中心軸ｏに対して垂直な円板形状の端板２２と、この端板２２の外周縁から軸方向他側に向かって延びる円筒形状の外周壁２４とを備えている。端板２２の中央には円形の貫通穴２６が形成されている。端板２２の軸方向片側端面には、貫通穴２６の外周縁の一部を囲繞して軸方向に突出する断面円弧形状の固定片２８が直径方向反対側に一対形成されている。一対の固定片２８が図示しない固定壁と係合することでハウジング２０はその全体が固定壁に固定される。外周壁２４の内周面には軸方向に直線状に延びる断面略矩形の係止溝３０が周方向に等角度間隔をおいて４つ形成されている。外周壁２４の内周面には更に、周方向に延在するガイド溝３２も形成されている。ガイド溝３２は外周壁２４の比較的軸方向他側に形成されており、外周壁２４の内周面におけるガイド溝３２よりも軸方向他側の軸方向他側端部には、ガイド溝３２の存在に起因して径方向内側に突出する係止突起３４が規定されている。係止突起３４は係止溝３０の存在に起因して周方向に等角度間隔をおいて４つ設けられている。ガイド溝３２には回転体４の係止突条１８が係止突起３４を弾性的に乗り越えて嵌入され、係止突条１８は係止突起３４によって抜け止めされる。従って、ガイド溝３２の溝幅は係止突条１８の幅よりも幾分大きい。これにより、回転体４はハウジング２０によって周方向の移動は許容されるが軸方向の移動は規制される。 As shown in FIG. 1, the axial one-sided end portion of the rotating body 4 described above is inserted into the housing 20. When the housing 20 is described with reference to FIGS. 2 and 4 together with FIG. 1, the housing 20 has a disk-shaped end plate 22 perpendicular to the central axis o and an axially other side from the outer peripheral edge of the end plate 22. It is provided with a cylindrical outer peripheral wall 24 extending toward. A circular through hole 26 is formed in the center of the end plate 22. On the one-sided end surface in the axial direction of the end plate 22, a pair of fixed pieces 28 having an arcuate cross-section that surrounds a part of the outer peripheral edge of the through hole 26 and protrudes in the axial direction are formed on the opposite side in the diameter direction. When the pair of fixing pieces 28 engage with a fixing wall (not shown), the housing 20 is entirely fixed to the fixing wall. On the inner peripheral surface of the outer peripheral wall 24, four locking grooves 30 having a substantially rectangular cross section extending linearly in the axial direction are formed at equal intervals in the circumferential direction. A guide groove 32 extending in the circumferential direction is also formed on the inner peripheral surface of the outer peripheral wall 24. The guide groove 32 is formed on the other side in the axial direction of the outer peripheral wall 24, and the guide groove 32 is formed on the other side in the axial direction on the inner peripheral surface of the outer peripheral wall 24 on the other side in the axial direction than the guide groove 32. A locking projection 34 that projects radially inward due to the presence of the is defined. Due to the presence of the locking groove 30, four locking projections 34 are provided at equal intervals in the circumferential direction. The locking ridge 18 of the rotating body 4 elastically gets over the locking protrusion 34 and is fitted into the guide groove 32, and the locking ridge 18 is prevented from coming off by the locking protrusion 34. Therefore, the groove width of the guide groove 32 is slightly larger than the width of the locking ridge 18. As a result, the rotating body 4 is allowed to move in the circumferential direction by the housing 20, but the movement in the axial direction is restricted.

図１に示すとおり、ハウジング２０内には更に回転体４と軸方向に隣接する摩擦板３６も配設されている。図１と共に図２及び図５を参照して説明すると、摩擦板３６は中心軸ｏに対して垂直に配置される円形の主部３８と主部３８の外周面から径方向外方に突出する略矩形の係止片４０とを備えている。係止片４０は周方向に等角度間隔をおいて４つ形成されており、４つの係止片４０がハウジング２０の外周壁２４の内周面に形成された４つの係止溝３０と夫々係止することで、摩擦板３６はハウジング２０によって周方向の移動は規制されるが軸方向の移動は許容されることとなる。主部３８の中央には円形の貫通穴４２が形成されている。貫通穴４２には外周縁が局所的に拡径せしめられた円弧形状の規制凹所４４が付設されている。図１及び図２と共に図６を参照することによって理解されるとおり、規制凹所４４には回転体４の規制突起１６が挿入され、規制凹所４４が回転体４の回転を所要角度範囲内に規制する。図示の実施形態においては、規制凹所は１８０度の角度範囲に亘って延在しており、規制突起１６の断面は中心角が４０度の扇形状であることから、上記所要角度範囲は１４０度である。回転体４と対向する摩擦板３６の軸方向端面、つまり摩擦板３６の軸方向他側端面には、軸方向に突出する他側突出部４６が周方向に延在している。図５の上段左側図及び図６では容易に理解できるよう他側突出部４６には薄墨を付して示している。主に図５の上段右側図を参照して説明すると、図示の実施形態においては、他側突出部４６は直径方向の反対側に一対設けられている。一対の他側突出部４６の各々は中心角が１１０度の略扇形状であり（但し内周縁部の一部は規制凹所４４により除去されている）、片側突出部１２よりも周方向幅は広い。そして、一対の他側突出部４６の各々の反時計方向端には、反時計方向に向かって軸方向突出量が漸次低減する他側傾斜部４８が接続されている。他側傾斜部４８は直線状に延在している。 As shown in FIG. 1, a friction plate 36 adjacent to the rotating body 4 in the axial direction is further arranged in the housing 20. Explaining with reference to FIGS. 2 and 5 together with FIG. 1, the friction plate 36 projects radially outward from the circular main portion 38 arranged perpendicular to the central axis o and the outer peripheral surfaces of the main portion 38. It is provided with a substantially rectangular locking piece 40. Four locking pieces 40 are formed at equal intervals in the circumferential direction, and four locking pieces 40 are formed with four locking grooves 30 formed on the inner peripheral surface of the outer peripheral wall 24 of the housing 20, respectively. By locking, the friction plate 36 is restricted from moving in the circumferential direction by the housing 20, but is allowed to move in the axial direction. A circular through hole 42 is formed in the center of the main portion 38. The through hole 42 is provided with an arc-shaped regulation recess 44 whose outer peripheral edge is locally expanded in diameter. As will be understood by referring to FIG. 6 together with FIGS. 1 and 2, the regulating projection 16 of the rotating body 4 is inserted into the regulating recess 44, and the regulating recess 44 keeps the rotation of the rotating body 4 within the required angle range. Regulate to. In the illustrated embodiment, the regulation recess extends over an angle range of 180 degrees, and the cross section of the regulation protrusion 16 has a fan shape with a central angle of 40 degrees, so that the required angle range is 140. Degree. On the axial end surface of the friction plate 36 facing the rotating body 4, that is, the axial other side end surface of the friction plate 36, the other side protruding portion 46 protruding in the axial direction extends in the circumferential direction. In the upper left side view of FIG. 5 and FIG. 6, the other side protruding portion 46 is shown with a light ink so that it can be easily understood. Explaining mainly with reference to the upper right view of FIG. 5, in the illustrated embodiment, a pair of other side protrusions 46 are provided on the opposite sides in the diametrical direction. Each of the pair of other side protrusions 46 has a substantially fan shape with a central angle of 110 degrees (however, a part of the inner peripheral edge portion is removed by the regulation recess 44), and the circumferential width is wider than that of the one side protrusion 12. Is wide. Then, to each of the counterclockwise ends of the pair of other side protrusions 46, the other side inclined portion 48 whose axial protrusion amount gradually decreases in the counterclockwise direction is connected. The other side inclined portion 48 extends linearly.

上述した摩擦板３６はばね部材５２によって回転体４に向かって付勢される。図示の実施形態においては、ばね部材５２は金属製のウェーブワッシャであり、摩擦板３６がハウジング２０に収容されるより先にこれの内側に進入し、図１に示すとおり、ハウジング２０の端板２２と摩擦板３６との間に配置される。 The friction plate 36 described above is urged toward the rotating body 4 by the spring member 52. In the illustrated embodiment, the spring member 52 is a metal wave washer that enters the inside of the friction plate 36 before it is accommodated in the housing 20, and as shown in FIG. 1, the end plate of the housing 20. It is arranged between 22 and the friction plate 36.

続いて、図１と共に図６を参照して抵抗付与装置２の作動について説明する。図６（ａ）乃至（ｃ）はいずれも図１のＢ－Ｂ断面を示すものであり、回転体４を所要角度範囲で回転させた際の回転体４と摩擦板３６との位置関係を示すものである。なお、後述するとおり図６（ｂ）及び図６（ｃ）は共に片側突出部１２及び他側突出部４６の軸方向端面同士の密接が解除された状態を示すものであり、この状態では摩擦板３６は図１のＡ－Ａ断面で示す位置よりも軸方向他側に幾分変位するが、これを図６（ｂ）及び（ｃ）のＢ－Ｂ断面では便宜上変位しないものとして示している。 Subsequently, the operation of the resistance applying device 2 will be described with reference to FIG. 1 and FIG. 6 (a) to 6 (c) show the BB cross section of FIG. 1, and show the positional relationship between the rotating body 4 and the friction plate 36 when the rotating body 4 is rotated within a required angle range. It shows. As will be described later, FIGS. 6 (b) and 6 (c) both show a state in which the axial end faces of the one-side protruding portion 12 and the other-side protruding portion 46 are released from close contact with each other, and in this state, friction occurs. The plate 36 is slightly displaced to the other side in the axial direction from the position shown in the AA cross section of FIG. 1, but this is shown as not being displaced in the BB cross section of FIGS. 6 (b) and 6 (c) for convenience. There is.

図６（ａ）に示す状態にあっては、回転体４の規制突起１６は摩擦板３６に形成された規制凹所４４中の同図における時計方向端部に位置し、規制突起１６の時計方向端面は規制凹所４４の時計方向端を規定する摩擦板３６の周方向側面と当接している。回転体４は図６（ａ）に示す状態から時計方向に回転することはできないことから、図６（ａ）に示す状態が所要角度範囲の始点（又は終点）である。このとき、軸方向に見て回転体４の片側突出部１２と摩擦板３６の他側突出部４６とは重なり、片側突出部１２は他側突出部４６の時計方向端部に位置している。ここで、摩擦板３６はハウジング２０によって軸方向の移動は許容されていると共にばね部材５２によって回転体４に向かって付勢されていることから、片側突出部１２の軸方向端面は摩擦板３６の他側突出部４６の軸方向端面と密接している。この状態から回転体４が反時計方向に回転すると、摩擦板３６はハウジング２０によって周方向の移動は規制されていることから、密接する他側突出部４６の軸方向端面と片側突出部１２の軸方向端面との間の摩擦に起因して回転体４には抵抗トルクが付与される。ここで、回転体４が回転する際に、片側突出部１２が軸方向に見て他側突出部４６と重なる領域を第一の領域とし、これを符号５４で示す。 In the state shown in FIG. 6A, the regulating protrusion 16 of the rotating body 4 is located at the clockwise end in the regulating recess 44 formed in the friction plate 36 in the same figure, and the clock of the regulating protrusion 16 is watched. The directional end face is in contact with the circumferential side surface of the friction plate 36 that defines the clockwise end of the regulated recess 44. Since the rotating body 4 cannot rotate clockwise from the state shown in FIG. 6A, the state shown in FIG. 6A is the start point (or end point) of the required angle range. At this time, the one-side protruding portion 12 of the rotating body 4 and the other-side protruding portion 46 of the friction plate 36 overlap each other when viewed in the axial direction, and the one-side protruding portion 12 is located at the clockwise end of the other-side protruding portion 46. .. Here, since the friction plate 36 is allowed to move in the axial direction by the housing 20 and is urged toward the rotating body 4 by the spring member 52, the axial end surface of the one-side protruding portion 12 is the friction plate 36. It is in close contact with the axial end face of the other side protrusion 46. When the rotating body 4 rotates counterclockwise from this state, the friction plate 36 is restricted from moving in the circumferential direction by the housing 20, so that the axial end surface of the other side protruding portion 46 and the one side protruding portion 12 that are in close contact with each other are restricted. A resistance torque is applied to the rotating body 4 due to friction with the axial end face. Here, the region where the one-side protruding portion 12 overlaps with the other-side protruding portion 46 when viewed in the axial direction when the rotating body 4 rotates is defined as the first region, which is indicated by reference numeral 54.

図６（ａ）に示す状態から回転体４が反時計方向に回転して片側突出部１２が他側突出部４６の周方向端に接続された他側傾斜部４８に到達するまでは、回転体４には一定の抵抗トルクが付与される。片側突出部１２が他側突出部４６の周方向端に接続された他側傾斜部４８を通過する際には、相互に密接する片側突出部１２の軸方向端面と他側突出部４６の軸方向端面との面積が漸次低減することから、上記抵抗トルクは漸次低減することとなる。 From the state shown in FIG. 6A, the rotating body 4 rotates counterclockwise until the one-side protruding portion 12 reaches the other-side inclined portion 48 connected to the circumferential end of the other-side protruding portion 46. A constant resistance torque is applied to the body 4. When the one-side protrusion 12 passes through the other-side inclined portion 48 connected to the circumferential end of the other-side protrusion 46, the axial end surface of the one-side protrusion 12 and the axis of the other-side protrusion 46 are in close contact with each other. Since the area with the direction end face is gradually reduced, the resistance torque is gradually reduced.

そして、図６（ｂ）に示すとおり片側突出部１２が他側傾斜部４８を通過し、軸方向に見て他側突出部４６と周方向に離隔すると、片側突出部１２の軸方向端面と他側突出部４６の軸方向端面との密接は解除され、回転体４には上記抵抗トルクは付与されない。このとき、回転体４と摩擦板３６とは完全に離隔するようにしてもよい。そして、図６（ｃ）に示すとおり回転体４の規制突起１６が摩擦板３６の規制凹所４４の反時計方向端部に到達し、規制突起１６の反時計方向端面が規制凹所４４の反時計方向端を規定する摩擦板３６の周方向面と当接することで回転体４の反時計方向の回転は終了する。従って、図６（ｃ）に示す状態が所要角度範囲の終点（又は始点）である。ここで、回転体４が回転する際に、片側突出部１２が軸方向に見て他側突出部４６から周方向に離隔する領域を第二の領域とし、これを符号５６で示す。 Then, as shown in FIG. 6B, when the one-side protruding portion 12 passes through the other-side inclined portion 48 and is separated from the other-side protruding portion 46 in the circumferential direction when viewed in the axial direction, it becomes the axial end surface of the one-side protruding portion 12. The close contact of the other side protrusion 46 with the axial end surface is released, and the resistance torque is not applied to the rotating body 4. At this time, the rotating body 4 and the friction plate 36 may be completely separated from each other. Then, as shown in FIG. 6 (c), the regulating protrusion 16 of the rotating body 4 reaches the counterclockwise end portion of the regulating recess 44 of the friction plate 36, and the counterclockwise end surface of the regulating protrusion 16 is the regulating recess 44. The counterclockwise rotation of the rotating body 4 ends when it comes into contact with the circumferential surface of the friction plate 36 that defines the counterclockwise end. Therefore, the state shown in FIG. 6C is the end point (or start point) of the required angle range. Here, a region in which the one-side protruding portion 12 is separated from the other-side protruding portion 46 in the circumferential direction when the rotating body 4 rotates is defined as a second region, which is indicated by reference numeral 56.

本発明の抵抗付与装置では、軸方向に対向する回転体４及び摩擦板３６の軸方向端面には夫々軸方向に突出する片側突出部１２及び他側突出部４６が周方向に延在しており、回転体４が回転すると、片側突出部１２は軸方向に見て他側突出部４６と重なる第一の領域５４から両者が周方向に離隔する第二の領域５６へ（又は第二の領域５６から第一の領域５４へ）移動する。摩擦板３６はばね部材５２によって回転体４に向かって付勢されていることから、片側突出部１２が第一の領域５４にあるときには、片側突出部１２及び他側突出部４６の軸方向端面は相互に密接して回転体４には抵抗トルクが付与される。従って、所要角度範囲内において回転可能な回転体４に対し、簡単な構造で上記所要角度範囲中の任意の角度範囲においてのみ抵抗トルクを付与することが可能となる。 In the resistance applying device of the present invention, one-side projecting portion 12 and the other-side projecting portion 46 projecting in the axial direction extend in the circumferential direction on the axial end faces of the rotating body 4 and the friction plate 36 facing each other in the axial direction. When the rotating body 4 rotates, the one-side protruding portion 12 moves from the first region 54 that overlaps with the other-side protruding portion 46 in the axial direction to the second region 56 that separates the two in the circumferential direction (or the second). (From region 56 to first region 54). Since the friction plate 36 is urged toward the rotating body 4 by the spring member 52, when the one-side protrusion 12 is in the first region 54, the axial end faces of the one-side protrusion 12 and the other-side protrusion 46 are present. Are in close contact with each other and a resistance torque is applied to the rotating body 4. Therefore, it is possible to apply the resistance torque to the rotating body 4 that can rotate within the required angle range only in an arbitrary angle range within the required angle range with a simple structure.

図６（ｃ）に示す状態から図６（ａ）に示す状態まで回転体４が時計方向に回転する際には、上述した回転体４が反時計方向に回転する場合とは逆である。図示の実施形態においては、回転体４の片側突出部１２及び摩擦板３６の他側突出部４６の両方の周方向端に片側傾斜部１４及び他側傾斜部４８が接続されていることに起因して、片側突出部１２が時計方向に移動することで他側突出部４６を自動的に押し下げてこれの軸方向端面に乗り上げ、再び回転体４の片側突出部１２の軸方向端面と摩擦板３６の他側突出部４６の軸方向端面とが密接することとなる。図示の実施形態においては、回転体４の片側突出部１２及び摩擦板３６の他側突出部４６の両方の周方向端に傾斜部を接続することで回転体４の回転に起因して摩擦板３６が自動で変位するようにしたが、レバーの如き図示しない別途の操作手段により手動で摩擦板３６を一時的に強制的に変位させて再び回転体４の片側突出部１２の軸方向端面と摩擦板３６の他側突出部４６の軸方向端面とが密接するようにしてもよい。 When the rotating body 4 rotates clockwise from the state shown in FIG. 6 (c) to the state shown in FIG. 6 (a), it is the opposite of the case where the rotating body 4 rotates counterclockwise. In the illustrated embodiment, the cause is that the one-side inclined portion 14 and the other-side inclined portion 48 are connected to both the circumferential ends of the one-side protruding portion 12 of the rotating body 4 and the other-side protruding portion 46 of the friction plate 36. Then, when the one-side protrusion 12 moves clockwise, the other-side protrusion 46 is automatically pushed down and rides on the axial end surface of the other side protrusion 46, and again the axial end surface of the one-side protrusion 12 of the rotating body 4 and the friction plate. The axial end face of the other side protrusion 46 of 36 will be in close contact with the end surface. In the illustrated embodiment, the friction plate is caused by the rotation of the rotating body 4 by connecting the inclined portions to the circumferential ends of both the one-side protruding portion 12 of the rotating body 4 and the other-side protruding portion 46 of the friction plate 36. Although the 36 is automatically displaced, the friction plate 36 is manually and forcibly displaced manually by another operation means (not shown) such as a lever, and again with the axial end surface of the one-side protruding portion 12 of the rotating body 4. The friction plate 36 may be brought into close contact with the axial end surface of the protruding portion 46 on the other side.

抵抗付与装置２を上述した施錠機構におけるデッドボルトのダンパーとして使用する場合には、デッドボルトが進出を開始する序盤でこれに抵抗トルクを付与するのが好ましい。 When the resistance applying device 2 is used as a damper for the dead bolt in the locking mechanism described above, it is preferable to apply a resistance torque to the dead bolt in the early stage when the dead bolt starts to advance.

以上、本発明に従って構成された抵抗付与装置について添付した図面を参照して詳述したが、本発明は上述した実施形態に限定されるものではなく、本発明を逸脱しない範囲内において適宜の修正や変更が可能である。例えば、図示の実施形態においては、回転体が回転可能な所要角度範囲の大きさは回転体の規制突起と摩擦板の規制凹所との協働によって決定されているが、回転体及び摩擦板の間で規制突起及び規制凹所は交換可能である。また、規制突起及び規制凹所を回転体及びハウジングに夫々形成してもよい。また、回転体の片側突出部及び摩擦板の他側突出部の周方向幅及び軸方向突出量は適宜設定されうる。更にまた、回転体、ハウジング及び摩擦板は合成樹脂又は金属製でよく、使用用途に応じて適宜選択される。 Although the resistance applying device configured according to the present invention has been described in detail with reference to the attached drawings, the present invention is not limited to the above-described embodiment, and appropriate modifications are made without departing from the present invention. And can be changed. For example, in the illustrated embodiment, the size of the required angle range in which the rotating body can rotate is determined by the cooperation between the regulating protrusion of the rotating body and the regulating recess of the friction plate, but between the rotating body and the friction plate. The regulation protrusions and recesses are replaceable. Further, the regulating protrusion and the regulating recess may be formed on the rotating body and the housing, respectively. Further, the circumferential width and the axial protrusion amount of the one-side protruding portion of the rotating body and the other-side protruding portion of the friction plate can be appropriately set. Furthermore, the rotating body, the housing and the friction plate may be made of synthetic resin or metal, and are appropriately selected according to the intended use.

２：抵抗付与装置
４：回転体
１２：片側突出部
２０：ハウジング
３６：摩擦板
４６：他側突出部
５２：ばね部材
５４：第一の領域
５６：第二の領域 2: Resistance applying device 4: Rotating body 12: One side protrusion 20: Housing 36: Friction plate 46: Other side protrusion 52: Spring member 54: First area 56: Second area

Claims

所要角度範囲内において回転可能な回転体に対して抵抗トルクを付与する抵抗付与装置であって、
前記回転体の少なくとも軸方向片側端部は固定のハウジング内に挿入され、前記回転体は前記ハウジングによって周方向の移動は許容されるが軸方向の移動は規制されており、
前記ハウジング内には更に前記回転体と軸方向に隣接する摩擦板が配設されており、前記摩擦板は前記ハウジングによって周方向の移動は規制されるが軸方向の移動は許容され、前記摩擦板はばね部材によって前記回転体に向かって付勢されており、
軸方向に対向する前記回転体及び前記摩擦板の軸方向端面には夫々軸方向に突出する片側突出部及び他側突出部が周方向に延在しており、
前記回転体が回転すると、前記片側突出部は軸方向に見て前記他側突出部と重なる第一の領域から両者が周方向に離隔する第二の領域へ又は前記第二の領域から前記第一の領域へ移動し、前記片側突出部が前記第一の領域にあるときには、前記片側突出部及び前記他側突出部の軸方向端面が密接して前記回転体には前記抵抗トルクが付与される、ことを特徴とする抵抗付与装置。 A resistance applying device that applies resistance torque to a rotating body that can rotate within a required angle range.
At least one end of the rotating body in the axial direction is inserted into a fixed housing, and the rotating body is allowed to move in the circumferential direction by the housing, but the movement in the axial direction is restricted.
A friction plate adjacent to the rotating body in the axial direction is further disposed in the housing, and the friction plate is restricted from moving in the circumferential direction by the housing, but is allowed to move in the axial direction, and the friction is allowed. The plate is urged toward the rotating body by a spring member, and the plate is urged toward the rotating body.
One-sided protrusions and other-side protrusions protruding in the axial direction extend in the circumferential direction on the axial end faces of the rotating body and the friction plate facing each other in the axial direction.
When the rotating body rotates, the one-sided protrusion moves from the first region overlapping the other-side protrusion in the axial direction to the second region separated from each other in the circumferential direction, or from the second region to the second region. When moving to one region and the one-side protrusion is in the first region, the axial end faces of the one-side protrusion and the other-side protrusion are in close contact with each other, and the resistance torque is applied to the rotating body. A resistance-imparting device characterized by the fact that

前記所要角度範囲の大きさは１８０度よりも小さく、前記片側突出部及び前記他側突出部は夫々直径方向の反対側に一対ずつ設けられている、請求項１に記載の抵抗付与装置。 The resistance applying device according to claim 1, wherein the size of the required angle range is smaller than 180 degrees, and the one-side protrusion and the other-side protrusion are provided in pairs on opposite sides in the radial direction.

前記回転体には軸方向に突出する規制突起が、前記摩擦板には前記所要角度範囲の大きさと対応して周方向に延在する規制凹所が夫々形成されており、前記規制突起は前記規制凹所に進入する、請求項１又は２に記載の抵抗付与装置。 The rotating body is formed with a restricting protrusion protruding in the axial direction, and the friction plate is formed with a restricting recess extending in the circumferential direction corresponding to the size of the required angle range. The resistance applying device according to claim 1 or 2, which enters a regulated recess.

前記片側突出部及び前記他側突出部のいずれか一方又はその両方の周方向一方端には、周方向一方に向かって軸方向突出量が漸次低減する傾斜部が接続されている、請求項１乃至３のいずれかに記載の抵抗付与装置。 Claim 1 is that an inclined portion whose axial protrusion amount gradually decreases toward one of the circumferential directions is connected to one end of either one or both of the one-side protrusion and the other side protrusion. The resistance applying device according to any one of 3 to 3.