JP7430695B2 - damper - Google Patents

damper Download PDF

Info

Publication number
JP7430695B2
JP7430695B2 JP2021185920A JP2021185920A JP7430695B2 JP 7430695 B2 JP7430695 B2 JP 7430695B2 JP 2021185920 A JP2021185920 A JP 2021185920A JP 2021185920 A JP2021185920 A JP 2021185920A JP 7430695 B2 JP7430695 B2 JP 7430695B2
Authority
JP
Japan
Prior art keywords
opening
closing member
coil spring
torsion coil
closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2021185920A
Other languages
Japanese (ja)
Other versions
JP2023073094A (en
Inventor
俊男 飯山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Origin Co Ltd
Original Assignee
Origin Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Origin Co Ltd filed Critical Origin Co Ltd
Priority to JP2021185920A priority Critical patent/JP7430695B2/en
Publication of JP2023073094A publication Critical patent/JP2023073094A/en
Application granted granted Critical
Publication of JP7430695B2 publication Critical patent/JP7430695B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Springs (AREA)

Description

本発明は、閉位置と開位置との間で回転自在に支持された開閉部材に装着されるダンパーに関する。 The present invention relates to a damper that is attached to an opening/closing member that is rotatably supported between a closed position and an open position.

本出願人は、閉位置と開位置との間で回転自在に支持された開閉部材に装着されるダンパーを提案した（特許文献１参照）。このダンパーは、ハウジングと、ハウジングに回転自在に支持され開閉部材に接続される回転部材と、ハウジングに第１の端部が取り付けられると共に回転部材に第２の端部が取り付けられたコイルバネと、回転部材が回転したときにコイルバネが縮径しながら巻き付く被巻き付け部材とを備える。被巻き付け部材は、外径が次第に減少する円錐台形状外周面を有する。 The present applicant has proposed a damper that is attached to an opening/closing member that is rotatably supported between a closed position and an open position (see Patent Document 1). This damper includes a housing, a rotating member rotatably supported by the housing and connected to the opening/closing member, and a coil spring having a first end attached to the housing and a second end attached to the rotating member. The coil spring includes a member to be wound around while reducing the diameter of the coil spring when the rotating member rotates. The member to be wrapped has a truncated conical outer peripheral surface whose outer diameter gradually decreases.

上記ダンパーにおいては、開閉部材の開閉動作に伴って回転部材の回転量が増大するにしたがい、コイルバネの巻き付け量が増大し、被巻き付け部材の円錐台形状外周面の大径側から小径側に向かって順次コイルバネが巻き付いていく。 In the above damper, as the amount of rotation of the rotating member increases with the opening/closing operation of the opening/closing member, the amount of winding of the coil spring increases, and the amount of winding of the coil spring increases from the large diameter side to the small diameter side of the truncated conical outer peripheral surface of the wrapped member. The coil spring is wound one after another.

一般に、コイルバネ等の長尺部材のたわみ量は長さの３乗で増大するので、被巻き付け部材の外周面に巻き付いていない部分のコイルバネの長さ（コイルバネのたわみ量に関係する長さ）が短くなるにしたがって、コイルバネの剛性が高まる。したがって、上記ダンパーのように、被巻き付け部材の外周面にコイルバネを巻き付ける構造のダンパーにおいては、被巻き付け部材へのコイルバネの巻き付け量が増大するにしたがってコイルバネの剛性が高まり、回転部材に作用するコイルバネのトルクが増大するため、開閉部材の開閉動作が所定位置で停止する際の衝撃が緩和される。 Generally, the amount of deflection of a long member such as a coil spring increases as the cube of the length, so the length of the coil spring that is not wrapped around the outer peripheral surface of the member to be wrapped (the length related to the amount of deflection of the coil spring) The stiffness of the coil spring increases as it becomes shorter. Therefore, in a damper having a structure in which a coil spring is wound around the outer peripheral surface of a member to be wound, such as the damper described above, the rigidity of the coil spring increases as the amount of winding of the coil spring around the member to be wound increases, and the coil spring acting on the rotating member increases. Since the torque increases, the impact when the opening/closing operation of the opening/closing member stops at a predetermined position is alleviated.

特開２０１９－２０３５３３号公報JP 2019-203533 Publication

しかしながら、上記特許文献１に開示されているダンパーにおいては、開閉部材の種類や大きさによって、開閉部材が停止する際に開閉部材が振動してしまう場合があるということが判明した。 However, in the damper disclosed in Patent Document 1, it has been found that depending on the type and size of the opening/closing member, the opening/closing member may vibrate when the opening/closing member stops.

上記事実に鑑みてなされた本発明の課題は、開閉部材が停止する際に開閉部材が振動するのを抑制することができるダンパーを提供することである。 An object of the present invention, made in view of the above facts, is to provide a damper that can suppress vibration of the opening/closing member when the opening/closing member stops.

本発明によれば、上記課題を解決する以下のダンパーが提供される。すなわち、
「閉位置と開位置との間で回転自在に支持された開閉部材に装着されるダンパーであって、
ハウジングと、
前記ハウジングに回転自在に支持され前記開閉部材に接続される回転部材と、
前記回転部材を介して前記開閉部材に対し開方向トルクを付与する捩じりコイルバネと、
前記捩じりコイルバネの内周面に圧入された断面弧状の板バネとを備えるダンパー」が提供される。 According to the present invention, the following damper that solves the above problems is provided. That is,
"A damper attached to an opening/closing member rotatably supported between a closed position and an open position,
housing and
a rotating member rotatably supported by the housing and connected to the opening/closing member;
a torsion coil spring that applies an opening direction torque to the opening/closing member via the rotating member;
and a plate spring having an arcuate cross section press-fitted into the inner circumferential surface of the torsion coil spring.

好ましくは、前記捩じりコイルバネが前記開閉部材に付与する開方向トルクは、重力に起因して前記開閉部材に付与される閉方向トルクよりも大きく、前記板バネは、前記開閉部材が前記開位置で停止する際における前記開閉部材の振動を抑制する。 Preferably, an opening direction torque applied to the opening/closing member by the torsion coil spring is larger than a closing direction torque applied to the opening/closing member due to gravity, and the leaf spring preferably has a structure in which the opening/closing member The vibration of the opening/closing member when stopping at a certain position is suppressed.

前記捩じりコイルバネが前記開閉部材に付与する開方向トルクは、重力に起因して前記開閉部材に付与される閉方向トルクよりも小さく、前記板バネは、前記開閉部材が前記閉位置で停止する際における前記開閉部材の振動を抑制するようになっていてもよい。 The opening torque applied to the opening/closing member by the torsion coil spring is smaller than the closing torque applied to the opening/closing member due to gravity, and the leaf spring causes the opening/closing member to stop at the closed position. The vibration of the opening/closing member may be suppressed when the opening/closing member is opened.

前記捩じりコイルバネの外周面に圧入された外周面側板バネを更に備えるのが望ましい。 It is preferable that the torsion coil spring further includes an outer circumferential side leaf spring press-fitted onto the outer circumferential surface of the torsion coil spring .

本発明のダンパーにおいては、捩じりコイルバネの内周面に圧入された板バネによって、開閉部材が停止する際に開閉部材が振動するのを抑制することができる。 In the damper of the present invention, the plate spring press-fitted into the inner circumferential surface of the torsion coil spring can suppress vibration of the opening/closing member when the opening/closing member stops.

本発明にしたがって構成されたダンパーの正面図（開閉部材が閉位置に位置している状態）。FIG. 2 is a front view of a damper configured according to the present invention (with the opening/closing member in the closed position). 図１におけるII－II線断面図。A sectional view taken along the line II-II in FIG. 1. 図２におけるIII－III線断面図。A sectional view taken along the line III-III in FIG. 2. （ａ）図１に示すハウジング本体の正面図、（ｂ）（ａ）におけるＢ－Ｂ線断面図。(a) A front view of the housing main body shown in FIG. 1, and (b) a sectional view taken along the line BB in (a). （ａ）図１に示すシールドの正面図、（ｂ）（ａ）におけるＢ－Ｂ線断面図。(a) A front view of the shield shown in FIG. 1, and (b) a sectional view taken along the line BB in (a). （ａ）図１に示す回転部材の正面図、（ｂ）（ａ）におけるＢ－Ｂ線断面図、（ｃ）図１に示す回転部材の背面図。(a) A front view of the rotating member shown in FIG. 1, (b) a sectional view taken along the line BB in (a), and (c) a rear view of the rotating member shown in FIG. 1. （ａ）図１に示す捩じりコイルバネの正面図、（ｂ）（ａ）におけるＢ－Ｂ線断面図。(a) A front view of the torsion coil spring shown in FIG. 1, and (b) a sectional view taken along the line BB in (a). （ａ）図１に示す板バネの正面図、（ｂ）（ａ）におけるＢ－Ｂ線断面図。(a) A front view of the leaf spring shown in FIG. 1, and (b) a sectional view taken along the line BB in (a). 開閉部材が開位置に位置したときの図１に示すダンパーの正面図。FIG. 2 is a front view of the damper shown in FIG. 1 when the opening/closing member is located in the open position. 図９におけるX－X線断面図。XX cross-sectional view in FIG. 9. 図１０におけるXI－XI線断面図。A sectional view taken along the line XI-XI in FIG. 10. 捩じりコイルバネの内周面にも板バネが圧入されているダンパーの断面図。FIG. 3 is a sectional view of a damper in which a leaf spring is also press-fitted into the inner peripheral surface of a torsion coil spring.

以下、本発明にしたがって構成されたダンパーの好適実施形態について、図面を参照しつつ説明する。 Hereinafter, preferred embodiments of a damper constructed according to the present invention will be described with reference to the drawings.

（ダンパー２）
図１ないし図３を参照して説明すると、全体を符号２で示すダンパーは、ハウジング４と、ハウジング４に回転自在に支持され開閉部材Ｃに接続される回転部材６（図２および図３参照）と、回転部材６を介して開閉部材Ｃに対し開方向トルクＴｏを付与する捩じりコイルバネ８と、捩じりコイルバネ８に圧入された断面弧状の板バネ１０（図２および図３参照）とを備える。 (Damper 2)
Referring to FIGS. 1 to 3, the damper, which is generally designated by the reference numeral 2, includes a housing 4, and a rotating member 6 (see FIGS. 2 and 3) rotatably supported by the housing 4 and connected to an opening/closing member C. ), a torsion coil spring 8 that applies an opening direction torque To to the opening/closing member C via the rotating member 6, and a plate spring 10 having an arc-shaped cross section press-fitted into the torsion coil spring 8 (see FIGS. 2 and 3). ).

（ハウジング４）
ハウジング４は、適宜の合成樹脂から形成され得る。図２に示すとおり、ハウジング４は、有底筒状のハウジング本体１２と、ハウジング本体１２の開放側端部に装着されたシールド１４とを含む。 (Housing 4)
Housing 4 may be formed from any suitable synthetic resin. As shown in FIG. 2, the housing 4 includes a bottomed cylindrical housing body 12 and a shield 14 attached to the open end of the housing body 12.

（ハウジング４のハウジング本体１２）
図４を参照して、ハウジング本体１２について説明する。ハウジング本体１２は、矩形状の端面壁１６と、端面壁１６の周縁から軸方向片側に延びる筒状の側壁１８とを有する。端面壁１６の中心部分には、回転部材６を支持するための円形の支持穴２０が形成されている。また、支持穴２０の下方には、捩じりコイルバネ８の端部が取り付けられる取付穴２２が形成されている。 (Housing body 12 of housing 4)
The housing body 12 will be described with reference to FIG. 4. The housing body 12 has a rectangular end wall 16 and a cylindrical side wall 18 extending from the periphery of the end wall 16 to one side in the axial direction. A circular support hole 20 for supporting the rotating member 6 is formed in the center of the end wall 16 . Furthermore, an attachment hole 22 is formed below the support hole 20 to which an end portion of the torsion coil spring 8 is attached.

図示の実施形態では、側壁１８の内周形状は円形状であり、側壁１８の外周形状は矩形状である。図４（ａ）に示すとおり、側壁１８には、軸方向に延びる４個の穴２４が設けられている。各穴２４には、ハウジング本体１２にシールド１４を固定するためのボルト（図示していない。）が挿入される。なお、穴２４の内周面には、上記ボルトに嵌り合う雌ねじが形成されていてもよい。 In the illustrated embodiment, the inner peripheral shape of the side wall 18 is circular, and the outer peripheral shape of the side wall 18 is rectangular. As shown in FIG. 4(a), the side wall 18 is provided with four holes 24 extending in the axial direction. A bolt (not shown) for fixing the shield 14 to the housing body 12 is inserted into each hole 24 . Note that the inner peripheral surface of the hole 24 may be formed with a female thread that fits into the bolt.

側壁１８の外面には、一対の突出片２６が設けられている。各突出片２６には貫通穴２６ａが形成されている。各貫通穴２６ａには、ハウジング本体１２を支持する支持構造物（図示していない。）に、ハウジング本体１２を固定するためのボルト（図示していない。）が挿入される。 A pair of protruding pieces 26 are provided on the outer surface of the side wall 18. A through hole 26a is formed in each protruding piece 26. A bolt (not shown) for fixing the housing body 12 to a support structure (not shown) that supports the housing body 12 is inserted into each through hole 26a.

（ハウジング４のシールド１４）
図５を参照して説明すると、シールド１４は、四隅が面取りされた矩形板状である。シールド１４の片面には、わずかに軸方向に突出する円形の突出部２８が設けられている。突出部２８の直径は、ハウジング本体１２の側壁１８の内径に対応している。また、突出部２８の中心部分には、回転部材６を支持するための円形の支持穴３０が形成されている。 (Shield 14 of housing 4)
Referring to FIG. 5, the shield 14 has a rectangular plate shape with chamfered corners. One side of the shield 14 is provided with a circular protrusion 28 that protrudes slightly in the axial direction. The diameter of the protrusion 28 corresponds to the inner diameter of the side wall 18 of the housing body 12. Furthermore, a circular support hole 30 for supporting the rotating member 6 is formed in the center of the protrusion 28 .

図５（ａ）に示すとおり、シールド１４の四隅には、ハウジング本体１２にシールド１４を固定するための上記ボルトが通る貫通穴３２が設けられている。そして、図２に示すとおり、ハウジング本体１２の側壁１８の内周縁にシールド１４の突出部２８が嵌め合わされ、貫通穴３２に挿入された上記ボルトによって、ハウジング本体１２にシールド１４が固定される。 As shown in FIG. 5(a), the four corners of the shield 14 are provided with through holes 32 through which the bolts described above for fixing the shield 14 to the housing body 12 pass. As shown in FIG. 2, the protrusion 28 of the shield 14 is fitted to the inner peripheral edge of the side wall 18 of the housing body 12, and the shield 14 is fixed to the housing body 12 by the bolt inserted into the through hole 32.

（回転部材６）
回転部材６は、金属材料または合成樹脂材料から形成され得る。図６に示すとおり、回転部材６は、全体として円筒形状である。図６（ｂ）を参照して説明すると、回転部材６は、第１の部分６ａと、第１の部分６ａよりも直径が大きい第２の部分６ｂと、第２の部分６ｂよりも直径が大きい第３の部分６ｃと、第１の部分６ａと直径が同一である第４の部分６ｄとを有する。第３の部分６ｃには、捩じりコイルバネ８の端部が取り付けられる取付穴３４が形成されている。 (Rotating member 6)
The rotating member 6 may be formed from a metal material or a synthetic resin material. As shown in FIG. 6, the rotating member 6 has a cylindrical shape as a whole. To explain with reference to FIG. 6(b), the rotating member 6 includes a first portion 6a, a second portion 6b having a larger diameter than the first portion 6a, and a second portion 6b having a larger diameter than the second portion 6b. It has a large third portion 6c and a fourth portion 6d having the same diameter as the first portion 6a. A mounting hole 34 to which an end portion of the torsion coil spring 8 is mounted is formed in the third portion 6c.

図２に示すとおり、第１の部分６ａは、ハウジング本体１２の支持穴２０に回転自在に挿入されている。また、第４の部分６ｄは、シールド１４の支持穴３０に回転自在に挿入されている。このように、回転部材６は、ハウジング４に回転自在に支持されている。 As shown in FIG. 2, the first portion 6a is rotatably inserted into the support hole 20 of the housing body 12. Further, the fourth portion 6d is rotatably inserted into the support hole 30 of the shield 14. In this way, the rotating member 6 is rotatably supported by the housing 4.

図示の実施形態の回転部材６には、軸方向に延びる接続穴３６（スプライン穴）が設けられている。図２に示すとおり、接続穴３６には、開閉部材Ｃのスプライン軸Ｃ１が挿入され、回転部材６と開閉部材Ｃとが互いに回転不能に接続される。 The rotating member 6 of the illustrated embodiment is provided with a connection hole 36 (spline hole) extending in the axial direction. As shown in FIG. 2, the spline shaft C1 of the opening/closing member C is inserted into the connection hole 36, and the rotating member 6 and the opening/closing member C are non-rotatably connected to each other.

なお、接続穴３６の形状については、スプライン穴に限定されず、回転部材６と開閉部材Ｃとの相対的な回転が阻止される状態で、回転部材６と開閉部材Ｃとが接続されるのであればよく、たとえばＤ形状の穴であってもよい。 Note that the shape of the connection hole 36 is not limited to a spline hole, and since the rotating member 6 and the opening/closing member C are connected in a state where relative rotation between the rotating member 6 and the opening/closing member C is prevented, the shape of the connecting hole 36 is not limited to a spline hole. For example, it may be a D-shaped hole.

あるいは、図示の実施形態とは反対に、回転部材６に接続軸（図示していない。）が設けられ、回転部材６の上記接続軸に挿入される穴（図示していない。）が開閉部材Ｃに設けられていてもよい。この場合には、回転部材６の接続軸が開閉部材Ｃの穴に挿入されることによって、回転部材６と開閉部材Ｃとが互いに回転不能に接続される。 Alternatively, contrary to the illustrated embodiment, the rotating member 6 is provided with a connecting shaft (not shown), and the hole (not shown) inserted into the connecting shaft of the rotating member 6 is an opening/closing member. It may be provided in C. In this case, the connecting shaft of the rotating member 6 is inserted into the hole of the opening/closing member C, so that the rotating member 6 and the opening/closing member C are connected to each other in a non-rotatable manner.

（捩じりコイルバネ８）
捩じりコイルバネ８は、金属材料から形成され得る。図７に示すとおり、捩じりコイルバネ８の第１の端部８ａおよび第２の端部８ｂは、それぞれ軸方向に突出している。 (Torsion coil spring 8)
The torsion coil spring 8 may be formed from a metal material. As shown in FIG. 7, the first end 8a and second end 8b of the torsion coil spring 8 each protrude in the axial direction.

図１および図２に示すとおり、捩じりコイルバネ８の第１の端部８ａは、ハウジング本体１２の取付穴２２に挿入されている。図示していないが、第２の端部８ｂは、回転部材６の取付穴３４に挿入されている。このように、第１の端部８ａはハウジング４に支持され、第２の端部８ｂは回転部材６に支持されている。また、図２に示すとおり、捩じりコイルバネ８は、回転部材６の第２の部分６ｂの径方向外側に位置している。 As shown in FIGS. 1 and 2, the first end 8a of the torsion coil spring 8 is inserted into the mounting hole 22 of the housing body 12. Although not shown, the second end 8b is inserted into the mounting hole 34 of the rotating member 6. In this way, the first end 8a is supported by the housing 4, and the second end 8b is supported by the rotating member 6. Further, as shown in FIG. 2, the torsion coil spring 8 is located on the radially outer side of the second portion 6b of the rotating member 6.

開閉部材Ｃが閉位置に位置している状態において、捩じりコイルバネ８は、自然状態よりも圧縮されており、回転部材６を介して開閉部材Ｃに開方向トルクＴｏ（図１参照）を付与する。開閉部材が開位置に位置した状態においては、捩じりコイルバネ８は自然状態となり得る。なお、開方向トルクＴｏは、開位置に向かって開閉部材Ｃを回転させるトルクである。図１に矢印Ｔｃでしめす閉方向トルクは、重力に起因するトルクであり、閉位置に向かって開閉部材Ｃを回転させるトルクである。 When the opening/closing member C is in the closed position, the torsion coil spring 8 is more compressed than in its natural state, and applies an opening direction torque To (see FIG. 1) to the opening/closing member C via the rotating member 6. Give. When the opening/closing member is in the open position, the torsion coil spring 8 can be in its natural state. Note that the opening direction torque To is a torque that rotates the opening/closing member C toward the open position. The closing direction torque indicated by the arrow Tc in FIG. 1 is a torque caused by gravity, and is a torque that rotates the opening/closing member C toward the closed position.

（板バネ１０）
板バネ１０は、金属材料または合成樹脂材料から形成され得る。板バネ１０が金属製である場合には、合成樹脂製に比べて長寿命であるという点で有利である。一方、板バネ１０が合成樹脂製であると、同一板厚の金属製のものに比べて、捩じりコイルバネ８の振動を抑制する効果が大きい点で有利である。 (plate spring 10)
The leaf spring 10 may be formed from a metal material or a synthetic resin material. When the leaf spring 10 is made of metal, it is advantageous in that it has a longer life than one made of synthetic resin. On the other hand, if the leaf spring 10 is made of synthetic resin, it is advantageous in that it has a greater effect of suppressing vibrations of the torsion coil spring 8 than a metal leaf spring of the same thickness.

図８に示すとおり、板バネ１０は、長方形状の板がＣ形状に折り曲げられ、断面弧状に形成されている。板バネ１０の第１の周方向端部１０ａおよび第２の周方向端部１０ｂは、径方向外側に向かって折り曲げられている。 As shown in FIG. 8, the plate spring 10 is formed by bending a rectangular plate into a C-shape and having an arcuate cross-section. The first circumferential end 10a and the second circumferential end 10b of the leaf spring 10 are bent radially outward.

図示の実施形態の板バネ１０は、捩じりコイルバネ８の外周面に圧入されている。捩じりコイルバネ８に対する板バネ１０の圧入状態は、捩じりコイルバネ８が圧縮され、捩じりコイルバネ８の直径が自然状態に比べて小さくなったときでも維持される。図２を参照することによって理解されるとおり、捩じりコイルバネ８に圧入された板バネ１０は、ハウジング本体１２の端面壁１６と、回転部材６の第３の部分６ｃとによって軸方向の移動（ずれ）が防止されている。 The leaf spring 10 of the illustrated embodiment is press-fitted into the outer peripheral surface of the torsion coil spring 8. The press-fit state of the leaf spring 10 into the torsion coil spring 8 is maintained even when the torsion coil spring 8 is compressed and the diameter of the torsion coil spring 8 becomes smaller than in its natural state. As understood by referring to FIG. 2, the leaf spring 10 press-fitted into the torsion coil spring 8 is moved in the axial direction by the end wall 16 of the housing body 12 and the third portion 6c of the rotating member 6. (misalignment) is prevented.

（板バネ１０’）
図１２に示すとおり、捩じりコイルバネ８の内周面に板バネ１０’が圧入されていてもよい。図１２に示す例では、捩じりコイルバネ８の外周面および内周面に板バネ１０、１０’が圧入されているが、捩じりコイルバネ８の内周面のみに板バネ１０’が圧入されていてもよい。つまり、板バネ１０、１０’は、捩じりコイルバネ８の外周面または内周面の少なくとも一方に圧入されていればよい。ただし、捩じりコイルバネ８の外周面および内周面の双方に板バネ１０、１０’が圧入されている方が、開閉部材Ｃの振動を抑制する効果が高いので好ましい。 (plate spring 10')
As shown in FIG. 12, a plate spring 10' may be press-fitted into the inner peripheral surface of the torsion coil spring 8. In the example shown in FIG. 12, leaf springs 10 and 10' are press-fitted into the outer and inner peripheral surfaces of the torsion coil spring 8, but the leaf spring 10' is press-fitted only into the inner peripheral surface of the torsion coil spring 8. may have been done. In other words, the leaf springs 10 and 10' may be press-fitted into at least one of the outer circumferential surface or the inner circumferential surface of the torsion coil spring 8. However, it is preferable that the plate springs 10, 10' are press-fitted into both the outer circumferential surface and the inner circumferential surface of the torsion coil spring 8, since this is more effective in suppressing vibrations of the opening/closing member C.

内周面側の板バネ１０’は、外周面側の板バネ１０と同様に、金属材料製または合成樹脂製でよく、また、長方形状の板がＣ形状に折り曲げられ、断面弧状に形成されている。一方、板バネ１０’の第１の周方向端部１０ａ’および第２の周方向端部１０ｂ’は、外周面側の板バネ１０とは異なり、径方向内側に向かって折り曲げられている。 The leaf spring 10' on the inner circumferential surface side may be made of a metal material or synthetic resin like the leaf spring 10 on the outer circumferential surface side, and may be formed by bending a rectangular plate into a C shape and forming an arcuate cross section. ing. On the other hand, the first circumferential end 10a' and the second circumferential end 10b' of the leaf spring 10' are bent radially inward, unlike the leaf spring 10 on the outer peripheral surface side.

（開閉部材Ｃ）
ダンパー２が装着される開閉部材Ｃは、閉位置と開位置との間で、たとえば水平軸回りに、回転自在に支持されるものである。言い換えると、開閉部材Ｃの一端部を回転中心として回転自在に支持され、閉位置での開閉部材Ｃの他端部の高さよりも、開位置での開閉部材Ｃの他端部の高さの方が高くなる部材が開閉部材Ｃの例として挙げられる。具体的には、炊飯器の蓋、便座、便蓋等が開閉部材Ｃの典型例である。 (Opening/closing member C)
The opening/closing member C to which the damper 2 is attached is rotatably supported between a closed position and an open position, for example around a horizontal axis. In other words, it is rotatably supported around one end of the opening/closing member C, and the height of the other end of the opening/closing member C in the open position is higher than the height of the other end of the opening/closing member C in the closed position. An example of the opening/closing member C is a member that is higher than the other. Specifically, a rice cooker lid, a toilet seat, a toilet lid, etc. are typical examples of the opening/closing member C.

開閉部材Ｃの閉位置は、たとえば、図１に示すように開閉部材Ｃが実質的に水平に延びる位置である。開閉部材Ｃの開位置は、図９に示すように、開閉部材Ｃが実質的に鉛直に延びる位置でよい。ただし、開閉部材Ｃの閉位置および開位置は、図１、図９に示すような位置に限定されず、跳ね上げ式ドアのように、閉位置において実質的に鉛直に延び、開位置において実質的に水平に延びていてもよい。 The closed position of the opening/closing member C is, for example, a position where the opening/closing member C extends substantially horizontally, as shown in FIG. The open position of the opening/closing member C may be a position where the opening/closing member C extends substantially vertically, as shown in FIG. However, the closed position and the open position of the opening/closing member C are not limited to the positions shown in FIGS. It may extend horizontally.

そして、このような開閉部材Ｃに対して、上述のダンパー２の捩じりコイルバネ８が回転部材６を介して付与する開方向トルクＴｏの大きさは、開閉部材Ｃの種類・用途に応じて適宜決定される。 The magnitude of the opening direction torque To applied by the torsion coil spring 8 of the damper 2 to the opening/closing member C via the rotating member 6 depends on the type and application of the opening/closing member C. To be determined accordingly.

具体的には、下記（１）あるいは（２）のいずれかに設定される。
（１）捩じりコイルバネ８が開閉部材Ｃに付与する開方向トルクＴｏが、重力に起因して開閉部材Ｃに付与される閉方向トルクＴｃよりも大きい（Ｔｏ＞Ｔｃ）。
（２）捩じりコイルバネ８が開閉部材Ｃに付与する開方向トルクＴｏが、重力に起因して開閉部材Ｃに付与される閉方向トルクＴｃよりも小さい（Ｔｏ＜Ｔｃ）。 Specifically, either (1) or (2) below is set.
(1) The opening direction torque To applied by the torsion coil spring 8 to the opening/closing member C is larger than the closing direction torque Tc applied to the opening/closing member C due to gravity (To>Tc).
(2) The opening torque To applied by the torsion coil spring 8 to the opening/closing member C is smaller than the closing torque Tc applied to the opening/closing member C due to gravity (To<Tc).

まず、上記（１）に設定されたダンパー２の作動について説明する。上記（１）に設定されたダンパー２が装着される開閉部材Ｃは、たとえば炊飯器の蓋である。なお、この場合における開閉部材Ｃは、一般的な炊飯器の蓋のように、適宜のロック機構（図示していない。）によって閉位置に位置づけられていると共に、適宜のストッパ（図示していない。）によって開位置で受け止められるようになっているものとする。 First, the operation of the damper 2 set in (1) above will be explained. The opening/closing member C to which the damper 2 set in (1) above is attached is, for example, a lid of a rice cooker. Note that the opening/closing member C in this case is positioned in the closed position by an appropriate locking mechanism (not shown), like the lid of a general rice cooker, and is also positioned by an appropriate stopper (not shown). ) so that it can be received in the open position.

開閉部材Ｃが上記ロック機構によって閉位置に位置づけられている状態においては、圧縮された捩じりコイルバネ８から、開閉部材Ｃに開方向トルクＴｏが付与されている（図１ないし図３参照）。 When the opening/closing member C is positioned in the closed position by the lock mechanism, an opening direction torque To is applied to the opening/closing member C from the compressed torsion coil spring 8 (see FIGS. 1 to 3). .

そして、上記ロック機構が解除されると、開方向トルクＴｏが閉方向トルクＴｃよりも大きいことから、開閉部材Ｃが閉位置から開位置に向かって回転する。開閉部材Ｃが開位置に向かって回転するにしたがい、捩じりコイルバネ８は圧縮状態から自然状態に向かって変化する（図２および図１０参照）。このため、捩じりコイルバネ８による開方向トルクＴｏが次第に小さくなる。 When the locking mechanism is released, the opening/closing member C rotates from the closed position toward the open position since the opening direction torque To is larger than the closing direction torque Tc. As the opening/closing member C rotates toward the open position, the torsion coil spring 8 changes from the compressed state toward the natural state (see FIGS. 2 and 10). Therefore, the opening direction torque To by the torsion coil spring 8 gradually decreases.

捩じりコイルバネ８が圧縮状態から自然状態に向かって変化し、捩じりコイルバネ８の直径が徐々に大きくなっていくと、外周面側の板バネ１０が捩じりコイルバネ８を径方向内側に向かって締め付ける力が次第に大きくなっていく。板バネ１０が捩じりコイルバネ８を締め付ける力は、捩じりコイルバネ８の復元に対する抵抗力として、すなわち、開閉部材Ｃが開位置に向かう回転に対する抵抗トルクとして作用する。 When the torsion coil spring 8 changes from the compressed state to the natural state and the diameter of the torsion coil spring 8 gradually increases, the leaf spring 10 on the outer circumference side moves the torsion coil spring 8 radially inward. The tightening force gradually increases. The force with which the leaf spring 10 tightens the torsion coil spring 8 acts as a resistance force against the restoration of the torsion coil spring 8, that is, as a resistance torque against rotation of the opening/closing member C toward the open position.

このように、開閉部材Ｃが開位置に向かって回転するにしたがい、捩じりコイルバネ８による開方向トルクＴｏが小さくなっていくと共に、板バネ１０による抵抗トルク（開方向トルクＴｏの反対方向のトルク）が大きくなっていく。 In this way, as the opening/closing member C rotates toward the open position, the opening direction torque To by the torsion coil spring 8 decreases, and the resistance torque by the leaf spring 10 (in the opposite direction to the opening direction torque To) decreases. torque) increases.

このため、開位置に向かう開閉部材Ｃの回転速度が開位置の手前で次第に小さくなり、開閉部材Ｃが開位置で停止する際の衝撃が緩和される。したがって、開閉部材Ｃが開位置で上記ストッパに受け止められた際に、開閉部材Ｃが上記ストッパに受け止められたことによる反動によって開閉部材Ｃが振動するのが抑制される。なお、開閉部材Ｃが開位置に位置した状態を図９ないし図１１に示す。 Therefore, the rotation speed of the opening/closing member C toward the open position gradually decreases before the opening position, and the impact when the opening/closing member C stops at the open position is alleviated. Therefore, when the opening/closing member C is received by the stopper in the open position, vibration of the opening/closing member C due to the reaction caused by the opening/closing member C being received by the stopper is suppressed. Note that FIGS. 9 to 11 show a state in which the opening/closing member C is located in the open position.

ところで、開閉部材Ｃが振動する場合には、開閉部材Ｃの振動に起因して、捩じりコイルバネ８の直径が拡大および縮小を交互に繰り返すことになる。この点、図示の実施形態のダンパー２においては、捩じりコイルバネ８の直径が縮小する動きに対して、内周面側の板バネ１０’が抵抗力を発揮する。したがって、開閉部材Ｃが開位置で停止する際に、反動によって開閉部材Ｃが閉位置に向かって戻ろうとすること（捩じりコイルバネ８の直径が縮小すること）を、内周面側の板バネ１０’が抑制する。このように、内周面側の板バネ１０’も開閉部材Ｃの振動抑制に寄与する。 By the way, when the opening/closing member C vibrates, the diameter of the torsion coil spring 8 repeats expansion and contraction alternately due to the vibration of the opening/closing member C. In this regard, in the damper 2 of the illustrated embodiment, the leaf spring 10' on the inner peripheral surface side exerts a resistance force against the movement of the torsion coil spring 8 to reduce its diameter. Therefore, when the opening/closing member C stops at the open position, the plate on the inner circumferential side prevents the opening/closing member C from returning toward the closed position due to reaction (reduction in the diameter of the torsion coil spring 8). Spring 10' restrains. In this way, the leaf spring 10' on the inner peripheral surface side also contributes to suppressing vibrations of the opening/closing member C.

次に、上記（２）に設定された場合のダンパー２（Ｔｏ＜Ｔｃ）の作動について説明する。上記（２）に設定されたダンパー２が装着される開閉部材Ｃとしては、便座や便蓋が挙げられる。なお、この場合における開閉部材Ｃは、適宜のストッパ（図示していない。）によって閉位置で受け止められると共に、適宜の支持部材によって開位置において支持されるものとする。 Next, the operation of the damper 2 (To<Tc) when set to (2) above will be explained. Examples of the opening/closing member C to which the damper 2 set in (2) above is attached include a toilet seat and a toilet lid. In this case, the opening/closing member C is assumed to be received in the closed position by an appropriate stopper (not shown) and supported in the open position by an appropriate support member.

この場合に、図１ないし図３に示す閉位置から、図９ないし図１１に示す開位置に向かって開閉部材Ｃを回転させる際は、捩じりコイルバネ８による開方向トルクＴｏが開閉部材Ｃに作用しているので、比較的小さいトルクで開閉部材Ｃを開位置に回転させることができる。 In this case, when rotating the opening/closing member C from the closed position shown in FIGS. 1 to 3 toward the open position shown in FIGS. 9 to 11, the opening direction torque To by the torsion coil spring 8 is Therefore, the opening/closing member C can be rotated to the open position with a relatively small torque.

上記（２）に設定されたダンパー２においても、開閉部材Ｃが開位置に向かって回転するにしたがって、捩じりコイルバネ８による開方向トルクＴｏが小さくなっていくと共に、板バネ１０による抵抗トルクが次第に大きくなっていくので、開閉部材Ｃが開位置で停止する際に開閉部材Ｃが振動するのを抑制することができる。 Also in the damper 2 set in (2) above, as the opening/closing member C rotates toward the open position, the opening direction torque To by the torsion coil spring 8 decreases, and the resistance torque by the leaf spring 10 decreases. Since the opening/closing member C gradually becomes larger, it is possible to suppress vibration of the opening/closing member C when the opening/closing member C stops at the open position.

一方、開位置から閉位置に向かって開閉部材Ｃを回転させる際は、捩じりコイルバネ８による開方向トルクＴｏが、重力に係る閉方向トルクＴｃよりも小さいことから、重力に係る閉方向トルクＴｃが開閉部材Ｃに作用する程度に、開閉部材Ｃを鉛直面に対して傾けると、開閉部材Ｃは閉位置に向かって回転する。 On the other hand, when rotating the opening/closing member C from the open position toward the closed position, since the opening direction torque To due to the torsion coil spring 8 is smaller than the closing direction torque Tc related to gravity, the closing direction torque related to gravity When the opening/closing member C is tilted relative to the vertical plane to the extent that Tc acts on the opening/closing member C, the opening/closing member C rotates toward the closed position.

開閉部材Ｃが閉位置に向かって回転するにしたがって、開閉部材Ｃの回転中心と開閉部材Ｃの重心との水平方向の距離が大きくなるので、重力に係る閉方向トルクＴｃが次第に大きくなる。また、開閉部材Ｃが閉位置に向かって回転するにしたがい、捩じりコイルバネ８は徐々に圧縮されていくため、捩じりコイルバネ８による開方向トルクＴｏも徐々に大きくなっていく。 As the opening/closing member C rotates toward the closed position, the horizontal distance between the center of rotation of the opening/closing member C and the center of gravity of the opening/closing member C increases, so the closing direction torque Tc related to gravity gradually increases. Further, as the opening/closing member C rotates toward the closed position, the torsion coil spring 8 is gradually compressed, so the opening direction torque To by the torsion coil spring 8 also gradually increases.

捩じりコイルバネ８が自然状態から圧縮されていき、捩じりコイルバネ８の直径が徐々に小さくなっていくと、内周面側の板バネ１０’が捩じりコイルバネ８を径方向外側に向かって押し付ける力が次第に大きくなっていく。板バネ１０’が捩じりコイルバネ８を径方向外側に押す力は、捩じりコイルバネ８の圧縮に対する抵抗力として、すなわち、開閉部材Ｃが閉位置に向かう回転に対する抵抗トルクとして作用する。 As the torsion coil spring 8 is compressed from its natural state and the diameter of the torsion coil spring 8 gradually becomes smaller, the leaf spring 10' on the inner circumference side moves the torsion coil spring 8 radially outward. The force pushing towards it gradually increases. The force of the leaf spring 10' pushing the torsion coil spring 8 radially outward acts as a resistance force against compression of the torsion coil spring 8, that is, as a resistance torque against rotation of the opening/closing member C toward the closed position.

このように、開閉部材Ｃが閉位置に向かって回転するにしたがって、重力に係る閉方向トルクＴｃが大きくなっていくところ、捩じりコイルバネ８による開方向トルクＴｏが次第に大きくなると共に、板バネ１０’による抵抗トルク（閉方向トルクＴｃの反対方向のトルク）も大きくなっていく。 In this way, as the opening/closing member C rotates toward the closed position, the closing direction torque Tc related to gravity increases, while the opening direction torque To due to the torsion coil spring 8 gradually increases, and the plate spring 10' (torque in the opposite direction to the closing direction torque Tc) also increases.

このため、閉位置に向かう開閉部材Ｃの回転速度が閉位置の手前で次第に小さくなり、開閉部材Ｃが閉位置で停止する際の衝撃が緩和される。したがって、開閉部材Ｃが閉位置で上記ストッパに受け止められた際に、開閉部材Ｃが上記ストッパに受け止められたことによる反動によって開閉部材Ｃが振動するのが抑制される。 Therefore, the rotational speed of the opening/closing member C toward the closed position gradually decreases before the closing position, and the impact when the opening/closing member C stops at the closed position is alleviated. Therefore, when the opening/closing member C is received by the stopper in the closed position, vibration of the opening/closing member C due to the reaction caused by the opening/closing member C being received by the stopper is suppressed.

また、捩じりコイルバネ８の直径が拡大する動きに対して、外周面側の板バネ１０が抵抗力を発揮することから、開閉部材Ｃが閉位置で停止する際に、反動によって開閉部材Ｃが開位置に向かって戻ろうとすること（捩じりコイルバネ８の直径が拡大すること）を、外周面側の板バネ１０が抑制する。このように、外周面側の板バネ１０も開閉部材Ｃの振動抑制に寄与する。 In addition, since the leaf spring 10 on the outer peripheral surface side exerts a resistance force against the movement of the torsion coil spring 8 to increase its diameter, when the opening/closing member C stops at the closed position, the opening/closing member C The leaf spring 10 on the outer peripheral surface side prevents the torsion coil spring 8 from returning toward the open position (the diameter of the torsion coil spring 8 increases). In this way, the leaf spring 10 on the outer peripheral surface side also contributes to suppressing vibrations of the opening/closing member C.

以上のとおりであり、図示の実施形態のダンパー２においては、捩じりコイルバネ８に圧入された板バネ１０、１０’によって、開閉部材Ｃが停止する際に開閉部材Ｃが振動するのを抑制することができる。 As described above, in the damper 2 of the illustrated embodiment, the plate springs 10 and 10' press-fitted into the torsion coil spring 8 suppress the vibration of the opening/closing member C when the opening/closing member C stops. can do.

２：ダンパー
４：ハウジング
６：回転部材
８：捩じりコイルバネ
１０：板バネ（捩じりコイルバネの外周面側）
１０’：板バネ（捩じりコイルバネの内周面側）
Ｃ：開閉部材 2: Damper 4: Housing 6: Rotating member 8: Torsion coil spring 10: Leaf spring (outer peripheral surface side of torsion coil spring)
10': Leaf spring (inner surface side of torsion coil spring)
C: Opening/closing member

Claims (4)

閉位置と開位置との間で回転自在に支持された開閉部材に装着されるダンパーであって、
ハウジングと、
前記ハウジングに回転自在に支持され前記開閉部材に接続される回転部材と、
前記回転部材を介して前記開閉部材に対し開方向トルクを付与する捩じりコイルバネと、
前記捩じりコイルバネの内周面に圧入された断面弧状の板バネとを備えるダンパー。 A damper mounted on an opening/closing member rotatably supported between a closed position and an open position,
housing and
a rotating member rotatably supported by the housing and connected to the opening/closing member;
a torsion coil spring that applies an opening direction torque to the opening/closing member via the rotating member;
A damper comprising a plate spring having an arcuate cross section press-fitted into the inner circumferential surface of the torsion coil spring. 前記捩じりコイルバネが前記開閉部材に付与する開方向トルクは、重力に起因して前記開閉部材に付与される閉方向トルクよりも大きく、
前記板バネは、前記開閉部材が前記開位置で停止する際における前記開閉部材の振動を抑制する、請求項１に記載のダンパー。 The opening direction torque applied to the opening/closing member by the torsion coil spring is larger than the closing direction torque applied to the opening/closing member due to gravity,
The damper according to claim 1, wherein the leaf spring suppresses vibration of the opening/closing member when the opening/closing member stops at the open position. 前記捩じりコイルバネが前記開閉部材に付与する開方向トルクは、重力に起因して前記開閉部材に付与される閉方向トルクよりも小さく、
前記板バネは、前記開閉部材が前記閉位置で停止する際における前記開閉部材の振動を抑制する、請求項１に記載のダンパー。 The opening direction torque applied to the opening/closing member by the torsion coil spring is smaller than the closing direction torque applied to the opening/closing member due to gravity,
The damper according to claim 1, wherein the leaf spring suppresses vibration of the opening/closing member when the opening/closing member stops at the closed position. 前記捩じりコイルバネの外周面に圧入された外周面側板バネを更に備える、請求項１から３までのいずれかに記載のダンパー。 The damper according to any one of claims 1 to 3, further comprising an outer peripheral side leaf spring press-fitted into the outer peripheral surface of the torsion coil spring.
JP2021185920A 2021-11-15 2021-11-15 damper Active JP7430695B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021185920A JP7430695B2 (en) 2021-11-15 2021-11-15 damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021185920A JP7430695B2 (en) 2021-11-15 2021-11-15 damper

Publications (2)

Publication Number Publication Date
JP2023073094A JP2023073094A (en) 2023-05-25
JP7430695B2 true JP7430695B2 (en) 2024-02-13

Family

ID=86425444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021185920A Active JP7430695B2 (en) 2021-11-15 2021-11-15 damper

Country Status (1)

Country Link
JP (1) JP7430695B2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000329150A (en) 1999-05-18 2000-11-28 Origin Electric Co Ltd Coil spring type damper and hinge
JP2006170435A (en) 2004-11-22 2006-06-29 Bando Chem Ind Ltd Auto tensioner
JP2014066288A (en) 2012-09-25 2014-04-17 Chuo Spring Co Ltd Exhaust valve, and spring
JP2019203533A (en) 2018-05-22 2019-11-28 株式会社オリジン Damper
JP2021028510A (en) 2019-08-09 2021-02-25 下西技研工業株式会社 Hinge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000329150A (en) 1999-05-18 2000-11-28 Origin Electric Co Ltd Coil spring type damper and hinge
JP2006170435A (en) 2004-11-22 2006-06-29 Bando Chem Ind Ltd Auto tensioner
JP2014066288A (en) 2012-09-25 2014-04-17 Chuo Spring Co Ltd Exhaust valve, and spring
JP2019203533A (en) 2018-05-22 2019-11-28 株式会社オリジン Damper
JP2021028510A (en) 2019-08-09 2021-02-25 下西技研工業株式会社 Hinge

Also Published As

Publication number Publication date
JP2023073094A (en) 2023-05-25

Similar Documents

Publication Publication Date Title
US8021234B2 (en) Spring seat and damper disk assembly
US8029370B2 (en) Spring seat and damper disk assembly
US6461243B1 (en) Coil spring assembly and damper mechanism
JP2006097898A (en) Belt stretcher
WO2011128988A1 (en) Dynamic damper
JP3975719B2 (en) Auto tensioner
JPH06213294A (en) Eccentric type belt tensioner
JP2017180820A (en) Auto Tensioner
JP7430695B2 (en) damper
US7192354B2 (en) Damper mechanism and damper disk assembly
US6241614B1 (en) Clutch disk assembly having a two stage dampening mechanism having a further vibration dampening mechanism that functions in both stages of dampening
US20060260898A1 (en) Flywheel assembly
JPWO2020195833A1 (en) Flexible flywheel
JP5522061B2 (en) Dynamic damper
WO1996020357A1 (en) Torsional damper comprising a number of friction stages
JP2020133814A (en) Rotary device
JP3972997B2 (en) Shock absorber
JP7237129B1 (en) Combination of torque adjusting member and mechanical rotary damper
JP7420456B2 (en) internal combustion engine crankshaft
JP3675644B2 (en) Damper mechanism
WO2022259109A1 (en) Tensioner with dual damping system for a belt drive
JP2011140977A (en) Dynamic damper
JP7457635B2 (en) Vibration isolator
JP2024085298A (en) Rice cooker lid opening and closing mechanism
JP2002257195A (en) Twisted vibration buffering device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20221021

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20230905

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20230922

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20231003

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20231122

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240109

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240131

R150 Certificate of patent or registration of utility model

Ref document number: 7430695

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150