JPH0571262A - Rotary damper - Google Patents
Rotary damperInfo
- Publication number
- JPH0571262A JPH0571262A JP2583592A JP2583592A JPH0571262A JP H0571262 A JPH0571262 A JP H0571262A JP 2583592 A JP2583592 A JP 2583592A JP 2583592 A JP2583592 A JP 2583592A JP H0571262 A JPH0571262 A JP H0571262A
- Authority
- JP
- Japan
- Prior art keywords
- damper
- rotating body
- mainspring
- rotary body
- opening
- 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.)
- Granted
Links
Landscapes
- Closing And Opening Devices For Wings, And Checks For Wings (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ゼンマイを内蔵し、
カセット蓋、扉などの開閉体を有する使用機器の本体、
又は該開閉体のどちらか一方に固定され、開閉体をゼン
マイによって開方向に付勢すると共に、開閉体の開閉両
方向の動きを制動して静かに行なわせる回転ダンパー装
置に関する。This invention incorporates a mainspring,
Main body of equipment used, which has opening and closing bodies such as cassette lids and doors,
Alternatively, the present invention relates to a rotary damper device that is fixed to either one of the opening / closing bodies, urges the opening / closing bodies in the opening direction by a mainspring, and brakes the opening / closing bodies in both opening and closing directions to quietly perform the operations.
【０００２】[0002]
【従来の技術】自動車の衝突時のシートベルトに加わる
大きな衝撃や、パラシュートが開いたときのロープに作
用する衝撃、高所から避難するときの避難ロープに作用
する衝撃などを回転方向の力として受け、その衝撃を緩
衝するための回転ダンパー装置は、特公昭５４−３１１
４６号公報により公知である。上記装置は、３葉以上の
エピトロコイド曲面で構成された複雑な内周曲面を有す
る軸方向に長い筒形の内側ケースの内周の中心に固定軸
を貫通し、この固定軸に上記エピトロコイド曲面の数と
異なる数の頂点を有し、その頂点の一つ宛が常時内側ケ
ースの内周曲面に僅かな間隙を保って接触する複雑な外
形の軸方向に長い固定子を固定し、内側ケースの内周曲
面と、固定子の外周との間に粘性流体を充填すると共
に、内側ケースから突出した固定軸の一端部にゼンマイ
の内端部を固定し、ゼンマイの外端部は上記内側ケース
に隣接したバネ室の内周に固定し、上記内側ケースとバ
ネ室とをアウターケースに嵌め、一体に結合してある。2. Description of the Related Art A large impact applied to a seat belt at the time of collision of an automobile, an impact on a rope when a parachute is opened, an impact on an evacuation rope when evacuating from a high place, etc. A rotary damper device for receiving and absorbing the impact is disclosed in Japanese Examined Patent Publication No. 54-311.
It is known from Japanese Patent Publication No. 46. The above device penetrates a fixed shaft at the center of the inner circumference of a cylindrical inner case having a complicated inner peripheral curved surface composed of three or more epitrochoid curved surfaces, and the epitrochoid is fixed to the fixed shaft. It has a number of vertices different from the number of curved surfaces, and one of the vertices is always in contact with the inner peripheral curved surface of the inner case with a slight gap fixed to the axially long stator, A viscous fluid is filled between the inner curved surface of the case and the outer circumference of the stator, and the inner end of the mainspring is fixed to one end of the fixed shaft protruding from the inner case. It is fixed to the inner circumference of the spring chamber adjacent to the case, and the inner case and the spring chamber are fitted into the outer case and integrally connected.
【０００３】[0003]
【発明が解決しようとする課題】上記装置では衝撃に基
づくトルクがアウターケースに加わると、内側ケースは
固定子の回りを回転しようとして、内側ケースの内周曲
面と、固定子の外周との間に形成された複数の空間に容
積変化が起こり、大から小に変化する空間中の粘性流体
が固定子の頂点の間隙を通じ小から大に変化する空間中
に流動しようとする流動抵抗で衝撃を緩衝し、このとき
ゼンマイを巻縮して復元力を蓄積し、衝撃がなくなると
ゼンマイの復元力でアウターケースは反対方向に回転す
るのであるが、衝撃を緩和するのが筒形の内側ケースの
複雑な内周曲面と、固定軸に固定された固定子の複雑な
外形とであるため、これらの製作が面倒であり、コスト
が非常に嵩む。In the above apparatus, when a torque due to impact is applied to the outer case, the inner case tries to rotate around the stator, so that the inner peripheral curved surface of the inner case and the outer periphery of the stator are separated from each other. Volume changes occur in the multiple spaces formed in the space, and viscous fluid in the space that changes from large to small tends to flow into the space that changes from small to large through the gap at the top of the stator. The outer case rotates in the opposite direction due to the spring's restoring force, but the outer case rotates in the opposite direction when the shock is removed. Due to the complicated inner peripheral curved surface and the complicated outer shape of the stator fixed to the fixed shaft, it is troublesome to manufacture them and the cost is very high.
【０００４】更に、アウターケースの中に上記内側ケー
スと、ゼンマイを内蔵したバネ室とを軸方向に収容し、
アウターケースの両端部をかしめて内側ケースとバネ室
とを保持するため、装置の軸方向の寸法は著しく大にな
り、自動車のシートベルト用、パラシュートのロープ
用、救命装置のロープ用等、大型であっても支障がない
個所には使用可能であっても、テレビ、ビデオ、テープ
レコーダ等の家電製品や、自動車の灰皿等、限られた狭
いスペースに装備することはできないと共に、アウター
ケースの両端部をかしめるのに手数がかゝり、生産性が
悪い。Further, the inner case and the spring chamber containing the mainspring are housed in the outer case in the axial direction,
Since the inner case and the spring chamber are held by crimping both ends of the outer case, the axial dimension of the device becomes significantly large, and it is large for automobile seat belts, parachute ropes, lifesaving device ropes, etc. Even if it can be used in a place where there is no problem, it cannot be installed in a limited narrow space such as home electric appliances such as TVs, video recorders, tape recorders, and ashtrays of automobiles. It is troublesome to crimp both ends and productivity is poor.
【０００５】[0005]
【課題を解決するための手段】そこで本発明は、単純な
構造の使用部品を少数使用し、且つ、極く限られた狭い
スペースに設置できる小型の回転ダンパーを得るために
開発されたのであって、開閉体を有する使用機器の本
体、又は該開閉体のどちらか一方に固定される取付基板
と、該取付基板にダンパーを介して回転自在に取付けら
れ、開閉体の開閉の動きに連動してダンパーで制動され
て正逆両方向に回転する歯車付き回転体と、一端を前記
取付基板、他端を上記歯車付き回転体に固定され、歯車
付き回転体の一方向の回転の際に巻締められて復元力を
蓄積するゼンマイとを有する回転ダンパー装置におい
て、前記歯車付き回転体の下端に外周から張出した鍔を
設けると共に、前記取付基板には上記歯車付き回転体の
半周以上を囲む包囲壁を設け、この包囲壁の内周に斜面
を斜め上に向け、下面で前記歯車付き回転体の鍔とスナ
ップ係合する爪を複数設けたことを特徴とする。Therefore, the present invention was developed to obtain a small rotary damper that uses a small number of parts having a simple structure and can be installed in an extremely limited and narrow space. And a mounting board fixed to either the main body of the device having the opening / closing body or the opening / closing body, and rotatably attached to the mounting board via a damper, and linked with the opening / closing movement of the opening / closing body. And a geared rotating body that is braked by a damper and rotates in both forward and reverse directions; one end is fixed to the mounting substrate and the other end is fixed to the geared rotating body, and tightened when rotating in one direction. In a rotary damper device having a mainspring for accumulating a restoring force, a flange extending from the outer circumference is provided at the lower end of the geared rotary body, and the mounting substrate has an enclosure wall surrounding more than half the circumference of the geared rotary body. Provided, towards the inclined surface on the inner periphery of the surrounding wall on the diagonal, characterized in that a plurality of pawls that flange and snap engagement of the gear with the rotating body on the lower surface.
【０００６】[0006]
【実施例】図示の各実施例において、１は使用機器に取
付けるための爪や、ビスを通す孔などの取付手段１ａを
有する取付基板、３はゼンマイ、６は軸７と、この軸の
上端から張出した制動板８を有するダンパーを示し、取
付基板１、ダンパー６はプラスチックで成形してある。
尚、ダンパー６は軸７と制動板８を一体にプラスチック
で成形してもよいし、別々に成形して一体に回転するよ
うに組立ててもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS In each of the embodiments shown in the drawings, 1 is a mounting board having mounting means 1a such as a claw for mounting on a device to be used and a hole for passing a screw, 3 is a spring, 6 is a shaft 7, and an upper end of this shaft. 1 shows a damper having a braking plate 8 extending from the mounting substrate 1 and the damper 6 are made of plastic.
The damper 6 may be formed by integrally molding the shaft 7 and the braking plate 8 with plastic, or may be separately molded and assembled so as to rotate integrally.
【０００７】図１〜３の実施例において、４はプラスチ
ックで成形した歯車付き回転体で、歯車５はその上面に
同心、且つ一体に設けてある。この回転体は下面が開放
し、上面が塞がれた中空部を有し、その中空部の下半は
大径、上半は小径になっていて、大径中空部４ｂと小径
中空部４ｃの間には段１０が形成されている。又、回転
体４は、大径中空部４ｂの周囲壁に、円周方向に等間隔
の、例えば４つの窓孔４ａを有すると共に、下端に鍔４
ｄを備えている。In the embodiment shown in FIGS. 1 to 3, 4 is a rotating body with a gear formed of plastic, and the gear 5 is concentrically and integrally provided on the upper surface thereof. This rotating body has a hollow portion whose lower surface is open and whose upper surface is closed. The lower half of the hollow portion has a large diameter and the upper half has a small diameter. The large diameter hollow portion 4b and the small diameter hollow portion 4c. A step 10 is formed between them. Further, the rotating body 4 has, for example, four window holes 4a at equal intervals in the circumferential direction on the peripheral wall of the large-diameter hollow portion 4b, and has a collar 4 at the lower end.
d.
【０００８】取付基板１の上面には回転体の鍔４ｄが内
周に嵌合する低い包囲壁９が立ち、包囲壁の内周には回
転体を取付基板上に押込んだとき鍔４ｄの上面をスナッ
プ止めする爪９′がある。包囲壁には必要に応じ切込み
９ａを形成し、回転筒を押込んでスナップ止めし易くし
てもよい。On the upper surface of the mounting board 1, there is a low surrounding wall 9 around which the collar 4d of the rotating body fits, and on the inside of the surrounding wall of the collar 4d when the rotating body is pushed onto the mounting board. There is a claw 9'for snapping the top surface. If necessary, a cutout 9a may be formed in the surrounding wall so that the rotary cylinder can be pushed in to facilitate snap-fitting.
【０００９】前述した回転体４の小径中空部４ｃの内径
はダンパー６の制動板８の直径よりも少し大である。
又、その下の大径中空部４ｂの内周には、この実施例で
はプラスチックで成形した保持筒２が嵌合する。保持筒
２の高さは、回転体４の下端から内周の段１０までの高
さよりも少し低い。保持筒２を回転体４と一体に回転さ
せるため、保持筒２は外周に回転体の周囲壁にある窓孔
４ａと対応した突起２ａを有し、内周にはゼンマイ３の
外端を筒状に丸めるなどして設けた突条３ｂを留めるた
めの溝２ｂを円周方向に複数個有する。そしてゼンマイ
の内端３ａを保持するためダンパーの軸７の下端部には
下端からスリット７ａを設けてある。尚、軸７の下端に
は非円形部７′があり、取付基板の包囲壁で囲まれた内
部の中心にある非円形孔１′に入って回転不能に取付け
られ、又、軸の上端には円形の窪み７″があり、回転体
４の上壁中心から下向きに突出した円形突起４ｌを受入
れるようになっている。The inner diameter of the small-diameter hollow portion 4c of the rotating body 4 described above is slightly larger than the diameter of the braking plate 8 of the damper 6.
Further, in this embodiment, the holding cylinder 2 made of plastic is fitted to the inner circumference of the large-diameter hollow portion 4b therebelow. The height of the holding cylinder 2 is slightly lower than the height from the lower end of the rotating body 4 to the step 10 on the inner circumference. In order to rotate the holding cylinder 2 integrally with the rotating body 4, the holding cylinder 2 has a projection 2a corresponding to the window hole 4a in the peripheral wall of the rotating body on the outer circumference and the outer end of the mainspring 3 on the inner circumference. A plurality of grooves 2b are provided in the circumferential direction for fastening the protrusions 3b which are provided by being rolled into a shape. In order to hold the inner end 3a of the mainspring, a slit 7a is provided at the lower end of the shaft 7 of the damper from the lower end. There is a non-circular portion 7'at the lower end of the shaft 7, which is non-rotatably mounted in a non-circular hole 1'in the center of the inside surrounded by the surrounding wall of the mounting substrate, and at the upper end of the shaft. Has a circular recess 7 ", and is adapted to receive a circular projection 4l which projects downward from the center of the upper wall of the rotating body 4.
【００１０】組立てるにはダンパーの制動板８の両面
と、必要ならば回転体４の段１０よりも上の小径中空部
４ｃの内面にシリコングリースなどの粘性が高いオイル
を塗り、ダンパー８を回転体４の中空部に下から入れ、
軸７の上端の窪み７″を上記突起４ｅに嵌めて制動板８
を小径中空部４ｃ中に位置させる。それから中心に軸７
を通す孔を有し、外径は保持筒２の外径と同程度のゴム
質のシール円盤１１をダンパーの軸７に下から嵌め、シ
ール円盤１１の周縁を段１０に受止めさせる（勿論、シ
ール円盤１１はダンパーを回転体に入れる前にダンパー
の軸７に嵌めて置いてもよい）。For assembling, both surfaces of the damper braking plate 8 and, if necessary, the inner surface of the small-diameter hollow portion 4c of the rotor 4 above the step 10 are coated with highly viscous oil such as silicone grease, and the damper 8 is rotated. Put it in the hollow part of the body 4 from below,
The recess 7 ″ at the upper end of the shaft 7 is fitted into the protrusion 4 e so that the braking plate 8
Is placed in the small diameter hollow portion 4c. Then axis 7 in the center
A rubber seal disk 11 having a hole through which the outer diameter is approximately the same as the outer diameter of the holding cylinder 2 is fitted onto the shaft 7 of the damper from below, and the peripheral edge of the seal disk 11 is received by the step 10 (of course). , The seal disk 11 may be fitted and placed on the shaft 7 of the damper before the damper is put into the rotating body).
【００１１】次に、保持筒２を回転体４の大径中空部４
ｂ中に下から嵌め、外周の突起２ａを回転体４の周囲壁
の窓孔４ａの下縁上にスナップ止めして保持筒２を回転
体４と一体に回転できるようにする共に、保持筒の上面
周縁部でシール円盤１１の周縁部を段１０に圧縮する。
必要に応じシール円盤１１の周縁部は段１０にスエージ
ング（溶接）などで固定してもよい。これによりダンパ
ーの制動板８と、オイル１２は回転体の小径中空部４ｂ
と、これを下から塞ぐシール円盤１１とで形成された収
容部４′中に収容される。Next, the holding cylinder 2 is attached to the large-diameter hollow portion 4 of the rotating body 4.
It is fitted from the bottom into b, and the projection 2a on the outer periphery is snap-fitted onto the lower edge of the window hole 4a in the peripheral wall of the rotating body 4 so that the holding cylinder 2 can rotate integrally with the rotating body 4. The peripheral edge of the sealing disk 11 is compressed into the step 10 at the peripheral edge of the upper surface of the.
If necessary, the peripheral edge of the seal disk 11 may be fixed to the step 10 by swaging (welding) or the like. As a result, the damping plate 8 of the damper and the oil 12 are stored in the small-diameter hollow portion 4b of the rotating body.
Then, it is housed in a housing portion 4'formed by a seal disk 11 that closes the disk from below.
【００１２】尚、この実施例では保持筒２は上端より少
し下にダンパーの軸７が貫通する中心孔を備えた上壁
２′を有し、シール円盤１１の下向きに分厚くなった下
面を上壁上に支持しているが、この上壁は省略可能であ
る。そして、保持筒２の内部をバネ室とし、こゝにゼン
マイ３を収容してその内端３ａをダンパー軸７の下端部
のスリット７ａに入れ、外端の突条３ｂは保持筒２の内
周の溝２ｂの１つに入れ、開いているカセット蓋を閉じ
るときにゼンマイ３が適度に巻縮められて、カセット蓋
が閉じることに抵抗すると共に、次にカセット蓋を開く
際の弾性力を蓄えることができるようにする。Incidentally, in this embodiment, the holding cylinder 2 has an upper wall 2'having a central hole through which the shaft 7 of the damper penetrates slightly below the upper end thereof, and the lower surface thickened downwardly of the sealing disk 11 is turned up. Although it is supported on the wall, this upper wall can be omitted. Then, the inside of the holding cylinder 2 is used as a spring chamber, and the mainspring 3 is housed therein, and the inner end 3a thereof is inserted into the slit 7a at the lower end portion of the damper shaft 7, and the ridge 3b at the outer end is arranged inside the holding cylinder 2. It is placed in one of the circumferential grooves 2b, and when the cassette lid that is open is closed, the mainspring 3 is appropriately crimped to resist closing the cassette lid, and the elastic force when the cassette lid is opened next is provided. Be able to store.
【００１３】こうしてゼンマイをセットしたら、保持筒
２並びに回転体４の下面から突出するダンパーの軸７の
下端の非円形部７′を取付基板の非円形孔１′中に嵌め
ながら保持筒２ごと回転体４を取付基板の包囲壁９内に
押込み、前述のように回転体の鍔４ｃの上面を包囲壁の
内周の爪９′でスナップ止めする。After setting the mainspring in this manner, the holding cylinder 2 and the holding cylinder 2 are fitted together with the non-circular portion 7'of the lower end of the shaft 7 of the damper projecting from the lower surface of the rotating body 4 in the non-circular hole 1'of the mounting substrate. The rotating body 4 is pushed into the surrounding wall 9 of the mounting substrate, and the upper surface of the collar 4c of the rotating body is snap-fastened by the claw 9'on the inner circumference of the surrounding wall as described above.
【００１４】これによりダンパー６の軸７の上端の円形
の窪み７″に回転体の上壁中心から下向きに突出した円
形突起４″が入って軸受され、軸７の下端の非円形部
７′は取付基板の包囲壁が囲む中心にある非円形孔１′
に入ってダンパー６は回転不能に位置決めされ、回転筒
４は保持筒２と一体に取付基板上で回転可能になる。
尚、回転体と取付基板間の摩擦を減少するには回転体４
の下端に図示のように下向きの尖鋭部を形成するなどし
て接触面積を少なくすればよい。As a result, the circular projection 4 "protruding downward from the center of the upper wall of the rotor is inserted into the circular recess 7" at the upper end of the shaft 7 of the damper 6 and is supported, and the non-circular portion 7'at the lower end of the shaft 7 is supported. Is a non-circular hole 1'in the center surrounded by the surrounding wall of the mounting substrate
Upon entering, the damper 6 is non-rotatably positioned, and the rotary cylinder 4 becomes rotatable with the holding cylinder 2 on the mounting substrate.
In order to reduce the friction between the rotating body and the mounting substrate, the rotating body 4
The contact area may be reduced by, for example, forming a downward sharpened portion at the lower end of the contact point.
【００１５】従って、取付基板１をカセット蓋或いは本
体のどちらか一方に固定し、他方にはカセット蓋を開閉
するときに回転体４の歯車５と噛合う歯車やセクターギ
ヤを設けると、開いているカセット蓋と閉めて行くと歯
車５と一体に回転体４と保持筒２はゼンマイ３を外端側
から巻締める方向に回転してゼンマイを巻締める。その
上、回転体４の上壁下面と、シール円盤１１の上面とは
粘性抵抗の高いオイル１２を介して回転しないダンパー
の制動板８と対面しているため、回転体の回転はオイル
の粘性抵抗で制動される。こうしてカセット蓋を閉める
ことはゼンマイの次第に高まるバネ力と、オイルの粘性
抵抗に抗して行わねばならないので、強激に、或いは乱
暴にカセット蓋を閉めることが防止できる。そして、カ
セット蓋を完全に閉めると、カセット蓋と本体の間に設
けてある適宜のロック機構が作動し、カセット蓋を閉ま
った状態に維持する。 カセット蓋を開くために押釦な
どを押し、ロック機構を釈放すると巻締められたゼンマ
イ３はその巻解力で保持筒ごと回転体４を逆方向に回転
させてカセット蓋を開く。しかし、回転体の回転は上述
のようにオイル１２の粘性抵抗で制動されるためカセッ
ト蓋は静かに開く。Therefore, when the mounting substrate 1 is fixed to either the cassette lid or the main body, and the other is provided with a gear or a sector gear that meshes with the gear 5 of the rotating body 4 when the cassette lid is opened and closed, it opens. When the cassette lid is closed, the rotating body 4 and the holding cylinder 2 are rotated integrally with the gear 5 in the direction of winding the mainspring 3 from the outer end side to wind the mainspring. In addition, since the lower surface of the upper wall of the rotating body 4 and the upper surface of the seal disk 11 face the braking plate 8 of the damper that does not rotate via the oil 12 having high viscous resistance, the rotation of the rotating body is caused by the viscosity of the oil. Braked with resistance. Since the cassette lid must be closed against the spring force of the spring and the viscous resistance of the oil, it is possible to prevent the cassette lid from being closed violently or violently. Then, when the cassette lid is completely closed, an appropriate lock mechanism provided between the cassette lid and the main body operates to keep the cassette lid closed. When a push button or the like is pushed to open the cassette lid and the lock mechanism is released, the unwinding power of the mainspring 3 causes the rotating body 4 together with the holding cylinder to rotate in the opposite direction by the unwinding force, and the cassette lid is opened. However, since the rotation of the rotating body is damped by the viscous resistance of the oil 12 as described above, the cassette lid is opened gently.
【００１６】尚、この実施例のようにゼンマイの外端の
突条３ｂを入れる溝２ｂをバネ室の円周方向に複数個設
けると、組立て時に突条３ｂを入れる溝を選択してカセ
ット蓋を開くためにゼンマイが蓄える弾性力の強さない
し、カセット蓋を閉める際にその力に抗するゼンマイの
弾性力の強さを所望に定めることができる。そして、取
付基板１に保持筒の内周の溝２ｂと連通する位置に一つ
或いは複数の孔１３を開設して置けば、この孔から細い
ピンなどを差込んでゼンマイの外端の筒状に丸めた突条
３ｂ中に挿入し、それから回転筒を外から一方向或いは
他方向に回して突条３ｂを今まで入っていた溝から脱出
させ、一つ隣り或いは二つ隣りの溝に入れ、ゼンマイの
弾発力の強さを組立て時よりも強く、或いは弱く変化さ
せることもできる。If a plurality of grooves 2b for receiving the protrusions 3b on the outer end of the mainspring are provided in the circumferential direction of the spring chamber as in this embodiment, the cassette lid is selected by selecting the groove for inserting the protrusions 3b during assembly. The strength of the elastic force stored by the mainspring for opening the mainspring is not strong, and the strength of the elastic force of the mainspring against the force when the cassette lid is closed can be determined as desired. Then, if one or a plurality of holes 13 are opened in the mounting substrate 1 at a position communicating with the groove 2b on the inner circumference of the holding cylinder, a thin pin or the like is inserted from this hole to form a cylindrical shape at the outer end of the mainspring. Insert it into the rounded ridge 3b, then turn the rotary cylinder from the outside in one direction or the other direction to let the ridge 3b escape from the groove that has been inserted until now and put it in one or two adjacent grooves. The strength of the spring of the mainspring can be changed to be stronger or weaker than that at the time of assembling.
【００１７】尚、この実施例ではゼンマイ３を回転体４
と一体に回転する保持筒２中に収容したが、保持筒２は
回転体の内周の段１０との間でシール円盤１１の周縁部
を固定し、オイル１２が漏出するのを防止するためのも
のである。従ってシール円盤の周縁部を回転体の内周に
溶接などで固定したときは保持筒を省略することがで
き、回転体の大径中空部４ｂをバネ室とし、その内周に
ゼンマイの外端の突条３ｂを入れる溝２ｂを形成すれば
よい。又、ゼンマイの内端３ａは取付基板上に回転不能
に固定したダンパーの軸７の下端部のスリットに止めた
が、これもダンパーの軸ではなく、取付基板に直接固定
してもよい。In this embodiment, the mainspring 3 is replaced with the rotating body 4.
In order to prevent the oil 12 from leaking, the holding cylinder 2 fixes the peripheral edge of the seal disk 11 between the holding cylinder 2 and the step 10 on the inner circumference of the rotating body. belongs to. Therefore, when the peripheral edge of the seal disk is fixed to the inner circumference of the rotating body by welding or the like, the holding cylinder can be omitted, and the large-diameter hollow portion 4b of the rotating body serves as a spring chamber, and the outer end of the mainspring is provided on the inner circumference thereof. The groove 2b may be formed to receive the protrusion 3b. Further, the inner end 3a of the mainspring is fixed to the slit at the lower end portion of the shaft 7 of the damper which is non-rotatably fixed on the mounting substrate, but this may also be directly fixed to the mounting substrate instead of the shaft of the damper.
【００１８】図４〜６の実施例では、取付基板１は半周
よりも少し大きい弧状の包囲壁９を有し、外周に一体の
歯車部を有する歯車付き回転体１３は下端に外周から張
出した鍔１３ａを備え、包囲壁９の内周中に回転体１３
を押込むとその鍔１３ａは包囲壁の内周から突出した爪
９′により上面をスナップ止めされ、回転体は回転可能
に保持される。In the embodiment shown in FIGS. 4 to 6, the mounting substrate 1 has an arcuate surrounding wall 9 which is slightly larger than the half circumference, and the geared rotary body 13 having an integral gear part on the outer periphery extends from the outer periphery to the lower end. The rotary body 13 is provided with a collar 13a and is provided in the inner circumference of the surrounding wall 9.
When is pushed in, the flange 13a is snapped on the upper surface by the claw 9'protruding from the inner circumference of the surrounding wall, and the rotating body is rotatably held.
【００１９】回転体１３はダンパー６の制動板８と、オ
イル１２を収容するための下面に開放した収容部１３′
を有す。ダンパーの軸７は上端に円形の窪みを有し、回
転体の収容部１３′の上面中央から下に突出した円形突
起がその窪みに突入する。ダンパー軸７にはシール円盤
１１を嵌め、その周縁部を収容部１３′の内周の途中に
溶接などで固定し、制動板８を浸漬するオイル１２が洩
出するのを防止する。ダンパー軸の下端の非円形突出部
７′は基板１の中央の非円形孔１′に突入し、歯車付き
回転体１３が回転するときもダンパーは回転せず、これ
により該回転体の両方向の動きを制動するThe rotating body 13 has a braking plate 8 of the damper 6 and an accommodating portion 13 'opened at the lower surface for accommodating the oil 12.
Have. The shaft 7 of the damper has a circular recess at the upper end, and a circular protrusion protruding downward from the center of the upper surface of the housing portion 13 'of the rotating body projects into the recess. A seal disk 11 is fitted on the damper shaft 7, and the peripheral edge of the disk is fixed by welding or the like in the middle of the inner circumference of the accommodating portion 13 'to prevent the oil 12 immersing the braking plate 8 from leaking out. The non-circular protrusion 7'at the lower end of the damper shaft projects into the non-circular hole 1'in the center of the substrate 1, and the damper does not rotate even when the rotating body 13 with gears rotates. Brake movement
【００２０】回転体の上面中央から短い軸１４が起立
し、これには上端からスリット１４′を形成し、ゼンマ
イ３の内端３ａを保持するようにしてある。回転体の上
面上にはゼンマイ３を被うため直径が回転体の歯車部の
谷径或いはそれよりも少し小さいキャップ１５が載る。
このキャップ１５は外方に張出したのち下向きに曲がる
数本の脚１５′…を有し、この各脚の下端は取付基板１
の包囲壁９の外周面に設けた爪９′にスナップ止めされ
て取付基板と一体になる。A short shaft 14 stands up from the center of the upper surface of the rotating body, and a slit 14 'is formed from the upper end of the shaft 14 so as to hold the inner end 3a of the mainspring 3. A cap 15 having a diameter smaller than or smaller than the root diameter of the gear portion of the rotor is placed on the upper surface of the rotor to cover the mainspring 3.
The cap 15 has several legs 15 '... Which project outward and then bend downward. The lower end of each leg is the mounting board 1
It is snap-fastened to a claw 9'provided on the outer peripheral surface of the surrounding wall 9 and integrated with the mounting substrate.
【００２１】ゼンマイの外端３ｂはキャップ１５の側部
の孔から外に引出す。この外端には横向きに取付片１６
が固定してあり、キャップ１５を取付基板１に押付けて
スナップ止めする際に、キャップと取付基板に夫々あっ
て上下方向に当接する当板１７と１８の間で取付片１６
を挟着する。図示の如く、取付片１６には孔を設け、当
板の一方にはこの孔に突入する突起を設けて置くことが
好ましい。The outer end 3b of the mainspring is pulled out from the hole on the side of the cap 15. At this outer end, a mounting piece 16 is mounted sideways.
Is fixed, and when the cap 15 is pressed against the mounting board 1 and snap-fastened, the mounting piece 16 is placed between the contact plates 17 and 18 that are in contact with the cap and the mounting board in the vertical direction.
Sandwich. As shown in the drawing, it is preferable that the mounting piece 16 is provided with a hole, and one of the contact plates is provided with a protrusion projecting into the hole.
【００２２】又、回転体１３の上面上にゼンマイ３を離
して支持するためキャップの内面には下端から少し上に
相対向する受板１９，１９を設け、ゼンマイ３は受板１
９，１９上に収容する。この実施例ではゼンマイ３の内
端を回転体に固定し、外端を取付基板１と、これと一体
に結合されるキャップで固定し、これによりカセット蓋
の一方向の動きで回転体を一方向に回転してゼンマイを
内端から巻締めて復元力を蓄積し、閉めたカセット蓋を
開けるために押釦などを操作し、ロック機構を釈放する
とゼンマイの復元力で蓋は開く。そしてダンパーは蓋の
開閉どちらの動きをも制動するので乱暴に閉められるこ
とを防ぐと共に、開く際は静かに開く。Further, in order to support the mainspring 3 on the upper surface of the rotating body 13 separately from each other, the inner surface of the cap is provided with receiving plates 19 and 19 which face each other slightly above the lower end, and the mainspring 3 is provided with the receiving plate 1.
Housed on 9,19. In this embodiment, the main end of the mainspring 3 is fixed to the rotating body, and the outer end of the mainspring 3 is fixed by the mounting substrate 1 and the cap integrally connected to the mounting substrate 1, whereby the rotating body is moved by one movement of the cassette lid. Rotate in the direction to tighten the spring from the inner end to accumulate the restoring force, operate the push button etc. to open the closed cassette lid, and release the lock mechanism to open the lid with the restoring force of the spring. And since the damper brakes both the opening and closing of the lid, it prevents it from being closed roughly and opens gently when opening.
【００２３】[0023]
【発明の効果】以上で明らかな如く本発明により開閉体
の開閉どちらの動きをもゼンマイで制動すると共に、開
閉体をゼンマイの巻解ける復元力で開くダンパー装置を
提供することができる。そして、取付基板上で回転する
歯車付き回転体は、取付基板に設けた半周以上の包囲壁
の内部に押し込むことで取付基板に対して回転自在に保
持されるため組立てに手数を要しない。こうして本発明
によれば軸方向の寸法が非常に小さく、極く限られた狭
いスペースにでも設置できる小型の回転ダンパーを生産
性よく提供できる。As is apparent from the above, according to the present invention, it is possible to provide a damper device for braking both opening and closing movements of the opening / closing body by the mainspring and opening the opening / closing body by the restoring force of unwinding the mainspring. The rotating body with gears that rotates on the mounting board is rotatably held with respect to the mounting board by being pushed into the surrounding wall of the mounting board, which has a half circumference or more, and therefore does not require labor for assembly. Thus, according to the present invention, it is possible to provide a small-sized rotary damper having a very small axial dimension and capable of being installed even in an extremely limited narrow space with high productivity.
【図１】第１実施例の組立て状態の縦断面図である。FIG. 1 is a vertical sectional view of a first embodiment in an assembled state.
【図２】分解状態の斜視図である。FIG. 2 is a perspective view of a disassembled state.
【図３】保持筒を図２とは逆の方向から見た斜視図であ
る。FIG. 3 is a perspective view of the holding cylinder viewed from the opposite direction to that of FIG.
【図４】第２実施例の組立て状態の平面図である。FIG. 4 is a plan view of an assembled state of the second embodiment.
【図５】第２実施例の縦断面図である。FIG. 5 is a vertical sectional view of a second embodiment.
【図６】分解状態の斜面図である。FIG. 6 is a perspective view of a disassembled state.
１ 取付基板 ３ ゼンマイ ４ 回転体 ４ｄ 鍔 ６ ダンパー ９ 弧状壁 ９′ 爪 １３ 回転体 １３ａ 鍔 1 Mounting Substrate 3 Spring 4 Rotating Body 4d Tsuba 6 Damper 9 Arc Wall 9'Claw 13 Rotating Body 13a Tsuba
Claims (1)
開閉体のどちらか一方に固定される取付基板と、該取付
基板にダンパーを介して回転自在に取付けられ、開閉体
の開閉の動きに連動してダンパーで制動されて正逆両方
向に回転する歯車付き回転体と、一端を前記取付基板、
他端を上記歯車付き回転体に固定され、歯車付き回転体
の一方向の回転の際に巻締められて復元力を蓄積するゼ
ンマイとを有する回転ダンパー装置において、 前記歯車付き回転体の下端に外周から張出した鍔を設け
ると共に、前記取付基板には上記歯車付き回転体の半周
以上を囲む包囲壁を設け、この包囲壁の内周に斜面を斜
め上に向け、下面で前記歯車付き回転体の鍔とスナップ
係合する爪を複数設けたことを特徴とする回転ダンパー
装置。1. A main body of a device having an opening / closing body, or a mounting board fixed to either one of the opening / closing body and a mounting body rotatably mounted on the mounting board via a damper to open / close the opening / closing body. A rotating body with a gear that is braked by a damper and rotates in both forward and reverse directions in conjunction with
A rotary damper device having the other end fixed to the geared rotary body and having a mainspring that is wound up when the geared rotary body is rotated in one direction to accumulate a restoring force, at the lower end of the geared rotary body. In addition to providing a flange extending from the outer periphery, the mounting substrate is provided with an enclosure wall that surrounds at least half the circumference of the geared rotary body, the slope is directed obliquely upward on the inner periphery of the enclosure wall, and the geared rotary body is provided on the lower surface. A rotary damper device comprising a plurality of claws that are snap-engaged with the collar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2583592A JPH0639864B2 (en) | 1992-01-17 | 1992-01-17 | Rotary damper device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2583592A JPH0639864B2 (en) | 1992-01-17 | 1992-01-17 | Rotary damper device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58095819A Division JPS59222631A (en) | 1983-06-01 | 1983-06-01 | Rotary damper device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0571262A true JPH0571262A (en) | 1993-03-23 |
| JPH0639864B2 JPH0639864B2 (en) | 1994-05-25 |
Family
ID=12176920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2583592A Expired - Lifetime JPH0639864B2 (en) | 1992-01-17 | 1992-01-17 | Rotary damper device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0639864B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045276A1 (en) * | 2003-11-05 | 2005-05-19 | Fuji Latex Co., Ltd. | Rotary damper and car accessory having the same |
| JP2007039913A (en) * | 2005-08-01 | 2007-02-15 | Fuji Latex Kk | Rotating operation support device |
-
1992
- 1992-01-17 JP JP2583592A patent/JPH0639864B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005045276A1 (en) * | 2003-11-05 | 2005-05-19 | Fuji Latex Co., Ltd. | Rotary damper and car accessory having the same |
| JP2007039913A (en) * | 2005-08-01 | 2007-02-15 | Fuji Latex Kk | Rotating operation support device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0639864B2 (en) | 1994-05-25 |
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