JP5905627B1

JP5905627B1 - Disc spring

Info

Publication number: JP5905627B1
Application number: JP2015145515A
Authority: JP
Inventors: 俊明山下
Original assignee: サンコールエンジニアリング株式会社
Priority date: 2015-07-23
Filing date: 2015-07-23
Publication date: 2016-04-20
Anticipated expiration: 2035-07-23
Also published as: JP2017026045A

Abstract

【課題】皿バネが上下に変位する際に、上方向への変位と下方向への変位とでバネ特性の差異を小さくすることである。【解決手段】外側支持部２と、この外側支持部２の内縁部２ａに一端３ａが接続されて円の中心に向かって延びる複数のスポーク３と、この複数のスポーク３の他端３ｂが接続される外縁部４ａを有する内側支持部４とを備え、前記外側支持部２の内縁部２ａと内側支持部４の外縁部４ａとをつなぐ基準面に対して、前記複数のスポーク３には基準面から互いに逆方向に突出する第１弾性突起５及び第２弾性突起６が設けられている。【選択図】図１PROBLEM TO BE SOLVED To reduce a difference in spring characteristics between an upward displacement and a downward displacement when a disc spring is displaced up and down. SOLUTION: An outer support portion 2, a plurality of spokes 3 having one end 3a connected to the inner edge 2a of the outer support portion 2 and extending toward the center of the circle, and the other ends 3b of the plurality of spokes 3 are connected. An inner support portion 4 having an outer edge portion 4a, and a reference surface connecting the inner edge portion 2a of the outer support portion 2 and the outer edge portion 4a of the inner support portion 4 with respect to the plurality of spokes 3 A first elastic protrusion 5 and a second elastic protrusion 6 that protrude in opposite directions from the surface are provided. [Selection] Figure 1

Description

本発明は径方向に変動しない皿バネに関するものである。 The present invention relates to a disc spring that does not vary in the radial direction.

自動車や精密機器など制振性が要求される製品には従来からこの種の皿バネが使用されている（特許文献１、２参照）。特許文献１に記載されているバネは、バネの本体部に形成された摩擦発生部が基台に向かって突出し、摩擦発生部の下端部と基台との間に隙間を設けた構成からなり、系の共振周波数付近の低周波数帯域の振動伝達率を低減できるといった効果を有している。また、特許文献２に記載されているバネは、往復駆動装置の一部を構成するものであり、円環状外縁部と該外縁部から中心に向かって形成された複数本の連結部とを備え、ヨークの両端に固定されて可動子を常にヨークの中空部の径方向中心位置にあるように保持するといった効果を有している。 Conventionally, this type of disc spring has been used for products that require vibration control, such as automobiles and precision equipment (see Patent Documents 1 and 2). The spring described in Patent Document 1 has a configuration in which a friction generating portion formed on the main body portion of the spring protrudes toward the base, and a gap is provided between the lower end portion of the friction generating portion and the base. The vibration transmissibility in the low frequency band near the resonance frequency of the system can be reduced. The spring described in Patent Document 2 constitutes a part of a reciprocating drive device, and includes an annular outer edge portion and a plurality of connecting portions formed from the outer edge portion toward the center. The movable element is fixed to both ends of the yoke and has an effect that the movable element is always held at the center position in the radial direction of the hollow portion of the yoke.

特開２０１２−２２７４号公報JP 2012-2274 A 実公昭５８−２８４６６号公報Japanese Utility Model Publication No. 58-28466

しかしながら、上記特許文献１に記載されたバネにあっては、摩擦発生部が基台に向かって突出しており、摩擦発生部の下端部と基台との間に隙間を有する構成からなり、また、上記特許文献２のバネにあっては、円環状外縁部から中心に向かって形成された複数本の連結部にはそのほぼ中間部に山形の突出部が一方向に形成された構成となっているので、バネが径方向と直交する二方向に変位した場合に一方向と他方向とでバネ特性が異なり、所定の制振効果が得られない。 However, in the spring described in Patent Document 1, the friction generating portion protrudes toward the base, and has a configuration having a gap between the lower end portion of the friction generating portion and the base, and In the spring of Patent Document 2, a plurality of connecting portions formed from the annular outer edge portion toward the center are formed so that a mountain-shaped protrusion is formed in one direction at a substantially intermediate portion. Therefore, when the spring is displaced in two directions orthogonal to the radial direction, the spring characteristics are different in one direction and the other direction, and a predetermined vibration damping effect cannot be obtained.

そこで、本発明は、バネが径方向と直交する二方向に変位した場合に、一方向と他方向とで同じようなバネ特性が得られるようにした皿バネを提供するものである。また、本発明は、周方向の回転力がバネに作用した場合に、周方向においてもバネ力が働くような皿バネを提供するものである。 Therefore, the present invention provides a disc spring in which the same spring characteristics are obtained in one direction and the other direction when the spring is displaced in two directions orthogonal to the radial direction. In addition, the present invention provides a disc spring in which a spring force works in the circumferential direction when a circumferential rotational force acts on the spring.

上記課題を解決するために、本発明に係る皿バネは、外側支持部と、この外側支持部の内縁部に一端が接続されて円の中心に向かって延びる複数のスポークと、この複数のスポークの他端が接続される外縁部を有する内側支持部とを備え、前記外側支持部の内縁部と内側支持部の外縁部とをつなぐ基準面に対して、前記複数のスポークには基準面から互いに逆方向に突出する弾性突起が少なくとも一対設けられている。 In order to solve the above-described problems, a disc spring according to the present invention includes an outer support portion, a plurality of spokes having one end connected to an inner edge portion of the outer support portion and extending toward the center of the circle, and the plurality of spokes. An inner support portion having an outer edge portion to which the other end of the outer support portion is connected, and a reference surface connecting the inner edge portion of the outer support portion and the outer edge portion of the inner support portion to the plurality of spokes from the reference surface At least a pair of elastic protrusions protruding in opposite directions are provided.

また、本発明に係る皿バネにおいて、スポークに設けられる少なくとも一対の弾性突起は、それぞれが頂角を有する山形形状に形成され、一実施形態では前記外側支持部の内縁部に近い方に設けられる第１弾性突起が、前記内側支持部の外縁部に近い方に設けられる第２弾性突起より頂角が大きく形成されている。 In the disc spring according to the present invention, at least a pair of elastic protrusions provided on the spoke are each formed in a mountain shape having an apex angle, and in one embodiment, provided on a side closer to the inner edge portion of the outer support portion. The first elastic protrusion has a larger apex angle than the second elastic protrusion provided closer to the outer edge of the inner support portion.

また、本発明に係る皿バネの複数のスポークは、一実施形態では外側支持部の内縁部から前記内側支持部の外縁部まで平面視でＳ字状に延びている。 Moreover, in one embodiment, the plurality of spokes of the disc spring according to the present invention extend in an S shape in plan view from the inner edge portion of the outer support portion to the outer edge portion of the inner support portion.

本発明に係る皿バネによれば、外側支持部と内側支持部との間に延びる複数のスポークには、前記外側支持部の内縁部と内側支持部の外縁部とをつなぐ基準面に対して、該基準面から互いに逆方向に突出する弾性突起が少なくとも一対設けられているので、皿バネが前記基準面に対して上下に変位した時の互いのバネ特性の差異を小さくすることができる。 According to the disc spring according to the present invention, the plurality of spokes extending between the outer support portion and the inner support portion are connected to the reference plane that connects the inner edge portion of the outer support portion and the outer edge portion of the inner support portion. Since at least one pair of elastic protrusions projecting in opposite directions from the reference surface are provided, the difference in the spring characteristics when the disc spring is displaced up and down with respect to the reference surface can be reduced.

また、本発明に係る皿バネによれば、前記スポークに設けられる少なくとも一対の弾性突起は、それぞれが頂角を有する山形形状に形成され、前記外側支持部の内縁部に近い方に設けられる第１弾性突起が、前記内側支持部の外縁部に近い方に設けられる第２弾性突起より頂角が大きく形成されているので、皿バネが上下に変位した時に発生する応力を分散させることができ、上下に変位した時の互いのバネ特性の差異をより小さくすることができる。 In the disc spring according to the present invention, the at least one pair of elastic protrusions provided on the spoke is formed in a chevron shape each having an apex angle, and is provided on the side closer to the inner edge portion of the outer support portion. Since the first elastic projection is formed with a larger apex angle than the second elastic projection provided closer to the outer edge of the inner support portion, the stress generated when the disc spring is displaced up and down can be dispersed. The difference between the spring characteristics when displaced up and down can be further reduced.

また、本発明に係る皿バネによれば、複数のスポークは、前記外側支持部の内縁部から前記内側支持部の外縁部まで平面視で曲線状に延びているので、周方向の回転に対してバネ力を持たせることができる。 Further, according to the disc spring according to the present invention, the plurality of spokes extend in a curved shape in plan view from the inner edge portion of the outer support portion to the outer edge portion of the inner support portion. Spring force.

本発明の第１実施形態に係る皿バネの斜視図である。It is a perspective view of the disc spring concerning a 1st embodiment of the present invention. 第１実施形態に係る皿バネの平面図である。It is a top view of the disc spring concerning a 1st embodiment. 第１実施形態に係る皿バネの側面図である。It is a side view of the disc spring concerning a 1st embodiment. 第１実施形態に係る皿バネの一対の弾性突起を示す図２のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG. 2 which shows a pair of elastic protrusion of the disc spring which concerns on 1st Embodiment. 本発明の第２実施形態に係る皿バネの平面図である。It is a top view of the disc spring concerning a 2nd embodiment of the present invention. 図５の一部拡大図である。FIG. 6 is a partially enlarged view of FIG. 5. 第２実施形態に係る皿バネの一対の弾性突起を示す図５のＢ−Ｂ線断面図である。FIG. 6 is a cross-sectional view taken along line B-B in FIG. 5 showing a pair of elastic protrusions of a disc spring according to a second embodiment. 本発明の第３実施形態に係る皿バネの斜視図である。It is a perspective view of a disc spring concerning a 3rd embodiment of the present invention. 第３実施形態に係る皿バネの平面図である。It is a top view of the disc spring concerning a 3rd embodiment. 上記第１実施例に係る皿バネをダンパに利用した一例を示す断面図である。It is sectional drawing which shows an example using the disk spring which concerns on the said 1st Example for a damper. 上記第３実施例に係る皿バネを回転装置に利用した一例を示す斜視図である。It is a perspective view which shows an example using the disk spring which concerns on the said 3rd Example for a rotating apparatus.

以下、添付図面に基づいて、本発明に係る皿バネの実施形態を詳細に説明する。図１乃至図４には本発明の第１実施形態に係る皿バネ１が示されている。この皿バネ１は、外側支持部２と、この外側支持部２の内縁部２ａに一端３ａが接続されて円の中心に向かって延びる複数のスポーク３と、この複数のスポーク３の他端３ｂが接続される外縁部４ａを有する内側支持部４とを備えている。この実施形態において、前記外側支持部２は平板状の円環板によって形成されており、この円環板の内周に沿って前記内縁部２ａが円形状に形成されている。また、前記外側支持部２には円周上に複数の取付孔２ｂが設けられている。 Hereinafter, an embodiment of a disc spring according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 4 show a disc spring 1 according to a first embodiment of the present invention. The disc spring 1 includes an outer support 2, a plurality of spokes 3 having one end 3 a connected to the inner edge 2 a of the outer support 2 and extending toward the center of the circle, and the other ends 3 b of the plurality of spokes 3. And an inner support portion 4 having an outer edge portion 4a connected thereto. In this embodiment, the outer support portion 2 is formed by a flat annular plate, and the inner edge portion 2a is formed in a circular shape along the inner periphery of the annular plate. Further, the outer support portion 2 is provided with a plurality of mounting holes 2b on the circumference.

前記内側支持部４は、平板状の円形板によって形成されており、この円形板の外周に沿って前記外縁部４ａが円形状に形成されている。また、内側支持部４の中心部には略矩形状の支持孔４ｂが設けられている。この支持孔４ｂは、例えば前記外側支持部２が固定された状態で皿バネ１を使用する際に、皿バネ１の支持孔４ｂに挿入された中心軸を支持するためのものである。なお、図３に示されるように、前記外側支持部２と内側支持部４は同一平面上に設けられている。 The inner support portion 4 is formed by a flat circular plate, and the outer edge portion 4a is formed in a circular shape along the outer periphery of the circular plate. Further, a substantially rectangular support hole 4 b is provided at the center of the inner support portion 4. The support hole 4b is for supporting the central axis inserted into the support hole 4b of the disc spring 1 when the disc spring 1 is used with the outer support portion 2 fixed, for example. In addition, as FIG. 3 shows, the said outer side support part 2 and the inner side support part 4 are provided on the same plane.

前記複数のスポーク３は内側支持部４の周囲に放射状に配列され、それぞれが薄板状の細いロッドからなり、全てが同一形状である。そして、各スポーク３の一端３ａが前記外側支持部２の内縁部２ａに接続され、他端３ｂが内側支持部４の外縁部４ａに接続されている。また、各スポーク３は、図２に示されるように、外側支持部２の内縁部２ａから内側支持部４の外縁部４ａまで同一幅で真っ直ぐに延びている。また、各スポーク３は、図１及び図４に示されるように、前記外側支持部２に接続される一端３ａから皿バネ１の表面側に突出する山形状の第１弾性突起５と、前記内側支持部４に接続される他端３ｂから同一平面上に延びる平面部３ｄを介して皿バネ１の裏面側に突出する山形状の第２弾性突起６とを有している。このように、各スポーク３に皿バネ１の表面側に突出する山形状の第１弾性突起５と裏面側に突出する山形状の第２弾性突起６を設けたので、各スポーク３が表面側に変位した時と裏面側に変位した時に、両側とも同じようなバネ特性が得られることになる。 The plurality of spokes 3 are arranged radially around the inner support portion 4, each of which is formed of a thin plate-like thin rod, and all have the same shape. One end 3 a of each spoke 3 is connected to the inner edge 2 a of the outer support 2, and the other end 3 b is connected to the outer edge 4 a of the inner support 4. Further, as shown in FIG. 2, each spoke 3 extends straight from the inner edge portion 2 a of the outer support portion 2 to the outer edge portion 4 a of the inner support portion 4 with the same width. Further, as shown in FIGS. 1 and 4, each spoke 3 includes a mountain-shaped first elastic protrusion 5 that protrudes from one end 3 a connected to the outer support portion 2 to the surface side of the disc spring 1, and It has a mountain-shaped second elastic protrusion 6 that protrudes from the other end 3 b connected to the inner support portion 4 to the back side of the disc spring 1 via a flat surface portion 3 d that extends on the same plane. As described above, each of the spokes 3 is provided with the mountain-shaped first elastic protrusion 5 protruding to the front surface side of the disc spring 1 and the mountain-shaped second elastic protrusion 6 protruding to the back surface side. The same spring characteristics can be obtained on both sides when it is displaced to the back and the back side.

前記スポーク３の平面部３ｄは、外側支持部２の内縁部２ａと内側支持部４の外縁部４ａとをつなぐ平面状の基準面３ｅ上に位置し、前記一対の弾性突起５，６がこの基準面３ｅから互いに逆方向に同じ高さ寸法ｈ１、ｈ２だけ突出している。また、前記第１弾性突起５の頂部５ａの角度θ１は第２弾性突起６の頂部６ａの角度θ２より大きく、第１弾性突起５の第１傾斜面５ｂが第２弾性突起６の第１傾斜面６ａよりなだらかに形成されている。なお、第１弾性突起５及び第２弾性突起６は共通の第２傾斜面７を有している。このように、第１弾性突起５と第２弾性突起６との間で傾斜角度に差を設けることで、皿バネ１が変位した時に発生する応力を分散させることができ、皿バネ１が表面側に変位した時のバネ特性と裏面側に変位した時のバネ特性との差異がより小さくなる。なお、図１及び図２に示されるように、上述した第１弾性突起５及び第２弾性突起６は、全てのスポーク３に同心円状に設けられている。 The flat portion 3d of the spoke 3 is located on a flat reference surface 3e that connects the inner edge portion 2a of the outer support portion 2 and the outer edge portion 4a of the inner support portion 4, and the pair of elastic protrusions 5 and 6 The same height dimensions h1 and h2 protrude from the reference surface 3e in opposite directions. In addition, the angle θ1 of the top 5a of the first elastic protrusion 5 is larger than the angle θ2 of the top 6a of the second elastic protrusion 6, and the first inclined surface 5b of the first elastic protrusion 5 is the first inclination of the second elastic protrusion 6. It is formed more gently than the surface 6a. The first elastic protrusion 5 and the second elastic protrusion 6 have a common second inclined surface 7. In this way, by providing a difference in the inclination angle between the first elastic protrusion 5 and the second elastic protrusion 6, the stress generated when the disc spring 1 is displaced can be dispersed, and the disc spring 1 The difference between the spring characteristics when displaced to the side and the spring characteristics when displaced to the back side becomes smaller. As shown in FIGS. 1 and 2, the first elastic protrusion 5 and the second elastic protrusion 6 described above are provided concentrically on all the spokes 3.

上記第１弾性突起５及び第２突起部６の突出高さは適宜選択することができ、高さ寸法ｈを大きくとることで、スポーク３の弾性可動範囲をある程度広げることができる。また、前記第１弾性突起５及び第２弾性突起６の数を増やすことも可能であり、それによってバネ定数をコントロールすることが可能となる。さらに、上記実施形態では第１弾性突起５と第２弾性突起６とが共通の第２傾斜面７を有しているが、第１弾性突起５と第２弾性突起６との間に平面部を設けることで、両者を離して形成することも可能である。さらにまた、第１弾性突起５の頂部５ａの角度θ１と第２弾性突起６の頂部６ａの角度θ２を同一として、両方の弾性突起５，６を同一形状としてもよい。 The protrusion heights of the first elastic protrusion 5 and the second protrusion 6 can be selected as appropriate, and the elastic movable range of the spoke 3 can be expanded to some extent by increasing the height dimension h. In addition, the number of the first elastic protrusions 5 and the second elastic protrusions 6 can be increased, and thereby the spring constant can be controlled. Further, in the above-described embodiment, the first elastic protrusion 5 and the second elastic protrusion 6 have the common second inclined surface 7, but a plane portion is provided between the first elastic protrusion 5 and the second elastic protrusion 6. It is also possible to form both of them apart from each other. Furthermore, the angle θ1 of the top 5a of the first elastic protrusion 5 and the angle θ2 of the top 6a of the second elastic protrusion 6 may be the same, and both elastic protrusions 5 and 6 may have the same shape.

上記構成からなる皿バネ１は、外側支持部２、スポーク３及び内側支持部４が一枚のステンレス材の打抜き加工によって形成される。また、スポーク３の第１弾性突起５及び第２弾性突起６は、ステンレス材の打抜き加工の際にプレス成形でスポーク３を屈曲変形させることで同時に形成される。 In the disc spring 1 having the above configuration, the outer support portion 2, the spoke 3, and the inner support portion 4 are formed by punching a single stainless steel material. Further, the first elastic protrusion 5 and the second elastic protrusion 6 of the spoke 3 are simultaneously formed by bending and deforming the spoke 3 by press molding at the time of punching a stainless steel material.

図５乃至図７には本発明の第２実施形態に係る皿バネ１１が示されている。この皿バネ１１は、前記第１実施形態に係る皿バネ１とは、スポーク１３の形状及びスポーク１３に設けられる第１弾性突起１５及び第２弾性突起１６が同一形状で形成されている点を除いてほぼ同一の構成からなるので、同一の構成には第１実施形態に係る皿バネ１と同一の符号を付すことによって詳細な説明を省略する。 5 to 7 show a disc spring 11 according to a second embodiment of the present invention. This disc spring 11 is different from the disc spring 1 according to the first embodiment in that the shape of the spoke 13 and the first elastic projection 15 and the second elastic projection 16 provided on the spoke 13 are formed in the same shape. Since it consists of substantially the same structure except for it, detailed description is abbreviate | omitted by attaching | subjecting the code | symbol same as the disk spring 1 which concerns on 1st Embodiment to the same structure.

前記スポーク１３は、図６に示されるように、外側支持部２の内縁部２ａに接続される一端１３ａから延びる第１弾性突起１５の横幅が、内側支持部４の外縁部４ａに接続される他端１３ｂから延びる平面部１３ｄ及び第２弾性突起１６の横幅より細く形成されており、その境にはロッドの左右両側に段差１７ａ，１７ｂが設けられている。また、この段差１７ａ、１７ｂを境にして外周側に第１弾性突起１５が、内周側に第２弾性突起１６がそれぞれ設けられているが、図７に示されるように、第１実施形態とは異なって、両方の弾性突起は同一形状に形成されている。 As shown in FIG. 6, in the spoke 13, the lateral width of the first elastic protrusion 15 extending from one end 13 a connected to the inner edge portion 2 a of the outer support portion 2 is connected to the outer edge portion 4 a of the inner support portion 4. The flat portion 13d extending from the other end 13b and the second elastic protrusion 16 are formed to be narrower than the lateral width, and steps 17a and 17b are provided on the left and right sides of the rod at the boundary. Further, the first elastic protrusion 15 is provided on the outer peripheral side and the second elastic protrusion 16 is provided on the inner peripheral side with the steps 17a and 17b as a boundary. As shown in FIG. 7, the first embodiment Unlike the above, both elastic protrusions are formed in the same shape.

すなわち、第１弾性突起１５及び第２弾性突起１６は、外側支持部２の内縁部２ａと内側支持部４の外縁部４ａとをつなぐ基準面３ｅからの高さ寸法ｈ１、ｈ２、及び頂部１５ａ，１６ａの各角度θ１、θ２がいずれも同じ値である。このように、第１弾性突起１５と第２弾性突起１６が同一形状であっても、スポーク１３の外周側の横幅を内周側の横幅より細くすることで、スポーク１３が変位した時に発生する応力を分散させることができ、スポーク全体に均一なバネ弾性を得ることができる。 That is, the first elastic protrusion 15 and the second elastic protrusion 16 have height dimensions h1 and h2 from the reference surface 3e that connects the inner edge portion 2a of the outer support portion 2 and the outer edge portion 4a of the inner support portion 4, and the top portion 15a. 16a have the same value. Thus, even when the first elastic protrusion 15 and the second elastic protrusion 16 have the same shape, the spoke 13 is displaced when the spoke 13 is displaced by making the lateral width on the outer peripheral side narrower than the lateral width on the inner peripheral side. Stress can be dispersed, and uniform spring elasticity can be obtained over the entire spoke.

図８及び図９には本発明の第３実施形態に係る皿バネ２１が示されている。この皿バネ２１は、前記第１実施形態に係る皿バネ１とは、スポーク２３の形状が異なっている点を除いてほぼ同一の構成からなるので、同一の構成には第１実施形態に係る皿バネ１と同一の符号を付すことによって詳細な説明を省略する。 8 and 9 show a disc spring 21 according to a third embodiment of the present invention. The disc spring 21 has substantially the same configuration as the disc spring 1 according to the first embodiment except that the shape of the spoke 23 is different. Therefore, the same configuration is related to the first embodiment. Detailed description is omitted by giving the same reference numerals as the disc spring 1.

前記スポーク２３は、外側支持部２の内縁部２ａに接続される一端２３ａから皿バネ２１の表面側に突出する第１弾性突起２５と、内側支持部４の外縁部４ａに接続される他端２３ｂから延びる平面部２３ｄを介して皿バネ２１の裏面側に突出する第２弾性突起２６とを有しているが、スポーク２３全体が略Ｓ字状に曲がりくねった形状に形成されている。また、スポーク２３は全長に亘って同一幅で形成されているおり、このスポーク２３に屈曲形成されている第１弾性突起２５及び第２弾性突起２６は、第１実施形態と同様、第１弾性突起２５の方が第２弾性突起２６よりなだらかな傾斜面を形成している。 The spoke 23 includes a first elastic protrusion 25 projecting from the one end 23 a connected to the inner edge 2 a of the outer support 2 to the surface side of the disc spring 21 and the other end connected to the outer edge 4 a of the inner support 4. Although it has the 2nd elastic protrusion 26 which protrudes in the back surface side of the disk spring 21 via the plane part 23d extended from 23b, the spoke 23 whole is formed in the shape which winds in the substantially S shape. Further, the spokes 23 are formed with the same width over the entire length, and the first elastic protrusions 25 and the second elastic protrusions 26 formed on the spokes 23 are bent in the same manner as in the first embodiment. The protrusion 25 forms a gentler inclined surface than the second elastic protrusion 26.

この実施形態に係る皿バネ２１の特徴は、全てのスポーク２３が略Ｓ字状に曲がりくねった形状に形成されていることであり、その形状を利用して周方向の回転に対してバネ力を有していることである。 A feature of the disc spring 21 according to this embodiment is that all the spokes 23 are formed in a substantially S-shaped winding shape, and the spring force is applied to the rotation in the circumferential direction using the shape. It is to have.

図１０には第１実施形態に係る皿バネ１を利用したダンパ３０の一例が示されている。ゴムの代わりに皿バネ１を弾性体として利用するものであり、皿バネ１の外側支持部２が枠体３１に固定されると共に、皿バネ１の内側支持部４で中心軸３２の一端を支持する構造であり、中心軸３２の上下方向の振動を皿バネ１によって制振するものである。従来のゴムの代わりに利用することで、ダンパ３０の全体高さを抑えられる他、耐薬品性を向上させることができる。 FIG. 10 shows an example of a damper 30 using the disc spring 1 according to the first embodiment. The disc spring 1 is used as an elastic body instead of rubber, and the outer support portion 2 of the disc spring 1 is fixed to the frame 31, and one end of the central shaft 32 is connected to the inner support portion 4 of the disc spring 1. This is a structure to support, and the vertical vibration of the central shaft 32 is suppressed by the disc spring 1. By using instead of the conventional rubber, the overall height of the damper 30 can be suppressed, and chemical resistance can be improved.

図１１には第３実施例に係る皿バネ２１を利用した回転伝達装置４０の一例が示されている。この回転伝達装置４０は、外側のケーシング４１に皿バネ２１の外側支持部２を固定すると共に、ケーシング４１の内壁面に沿って凹部４２を複数個所に設ける一方、回転軸４３と一体に回転する本体４４の外壁面に沿って前記凹部に遊嵌される凸部４５を設けたものである。回転軸４３は皿バネ２１の内側支持部４に支持されており、回転軸４３を駆動させると本体４４の回転と共に皿バネ２１に周方向のバネ力が働き、本体４４の急激な回転が直接ケーシング４１に伝わらないようにして、回転時のショックを和らげることができる。さらに本体４４が回転して凸部４５が凹部４２回転方向の内壁に当たることによって、本体４４と共にケージング４１を一緒に回転させることができる。 FIG. 11 shows an example of the rotation transmission device 40 using the disc spring 21 according to the third embodiment. The rotation transmission device 40 fixes the outer support portion 2 of the disc spring 21 to the outer casing 41, and is provided with a plurality of recesses 42 along the inner wall surface of the casing 41, while rotating integrally with the rotation shaft 43. A convex portion 45 that is loosely fitted into the concave portion is provided along the outer wall surface of the main body 44. The rotating shaft 43 is supported by the inner support portion 4 of the disc spring 21. When the rotating shaft 43 is driven, a circumferential spring force acts on the disc spring 21 along with the rotation of the main body 44, so that the rapid rotation of the main body 44 directly occurs. The shock at the time of rotation can be relieved so as not to be transmitted to the casing 41. Further, when the main body 44 rotates and the convex portion 45 hits the inner wall in the rotational direction of the concave portion 42, the caging 41 can be rotated together with the main body 44.

１，１１，２１皿バネ
２外側支持部
２ａ内縁部
２ｂ取付孔
３，１３，２３スポーク
３ａ，１３ａ，２３ａ一端
３ｂ，１３ｂ，２３ｂ他端
３ｄ，１３ｄ，２３ｄ平面部
３ｅ基準面
４内側支持部
４ａ外縁部
４ｂ支持孔
５，１５，２５第１弾性突起
５ａ，６ａ第１傾斜面
６，１６，２６第２弾性突起
７第２傾斜面
１７ａ，１７ｂ段差
３０ダンパ
３１枠体
３２中心軸
４０回転伝達装置
４１ケーシング
４２凹部
４３回転軸
４４本体
４５凸部
1,11,21 disc spring 2 outer support portion 2a inner edge portion 2b mounting hole 3, 13, 23 spoke 3a, 13a, 23a one end 3b, 13b, 23b other end 3d, 13d, 23d plane portion 3e reference surface 4 inner support portion 4a outer edge portion 4b support hole 5,15,25 first elastic projection 5a, 6a first inclined surface 6,16,26 second elastic protrusion 7 second inclined surface 17a, 17b step 30 damper 31 frame 32 central axis 40 rotation Transmission device 41 Casing 42 Concave portion 43 Rotating shaft 44 Main body 45 Convex portion

Claims

An outer support, a plurality of spokes having one end connected to the inner edge of the outer support and extending toward the center of the circle, and an inner support having an outer edge to which the other ends of the plurality of spokes are connected Prepared,
With respect to a reference surface connecting the inner edge portion of the outer support portion and the outer edge portion of the inner support portion, the plurality of spokes are provided with at least a pair of elastic protrusions protruding in opposite directions from the reference surface ,
In the at least one pair of elastic protrusions, the first elastic protrusion provided closer to the inner edge part of the outer support part has a larger apex angle than the second elastic protrusion provided closer to the outer edge part of the inner support part. Disc spring.

An outer support, a plurality of spokes having one end connected to the inner edge of the outer support and extending toward the center of the circle, and an inner support having an outer edge to which the other ends of the plurality of spokes are connected Prepared,
With respect to the reference surface connecting the inner edge portion of the outer support portion and the outer edge portion of the inner support portion, the plurality of spokes are provided with at least one pair of elastic protrusions protruding in opposite directions from the reference surface, and the plurality of the plurality of spokes. A disc spring in which spokes are formed in an S shape between an inner edge portion of the outer support portion and an outer edge portion of the inner support portion.

The disc spring according to claim 1 or 2 , wherein the plurality of spokes have a spoke width extending from an inner edge portion of an outer support portion to an outer edge portion of the inner support portion.

3. The disc spring according to claim 1, wherein the plurality of spokes have narrow portions narrower than a spoke width closer to an outer edge portion of the inner support portion, closer to an inner edge portion of the outer support portion. .

The disc spring according to any one of claims 1 to 4, wherein an inner edge portion of the outer support portion and an outer edge portion of the inner support portion are both formed in a circular shape.

The disc spring according to any one of claims 1 to 5 , wherein at least a pair of elastic protrusions provided on the spoke are each formed in a mountain shape having an apex angle.

The disc spring according to any one of claims 1 to 6 , wherein at least one pair of elastic protrusions provided on the spoke is formed by bending a part of the spoke.

The at least one pair of elastic protrusions provided on the spokes has a first elastic protrusion provided closer to the inner edge part of the outer support part than a second elastic protrusion provided closer to the outer edge part of the inner support part. The disc spring according to any one of claims 2 to 7 , wherein a corner is large.

The disc spring according to any one of claims 2 to 7 , wherein at least a pair of elastic protrusions provided on the spokes have the same apex angle.

The disc spring according to claim 1 or 2 , wherein the outer support portion is formed by a flat ring, and the ring is provided with a plurality of attachment holes along the circumference.

The disc spring according to claim 1 or 2 , wherein the inner member is formed of a flat disk, and a support hole is provided at the center of the disk.

The disc spring according to claim 1 or 2 , wherein the spoke has spring force with respect to rotation in the circumferential direction by fixing one side of the front outer support portion and the inner support portion and rotating the other side.