JPH11148558A - Sealing device - Google Patents
Sealing deviceInfo
- Publication number
- JPH11148558A JPH11148558A JP9329640A JP32964097A JPH11148558A JP H11148558 A JPH11148558 A JP H11148558A JP 9329640 A JP9329640 A JP 9329640A JP 32964097 A JP32964097 A JP 32964097A JP H11148558 A JPH11148558 A JP H11148558A
- Authority
- JP
- Japan
- Prior art keywords
- seal member
- seal
- auxiliary
- engaging portion
- sealing device
- 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
- Sealing With Elastic Sealing Lips (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、密封装置に係り、
更に詳しくは、シールリップを備えたシール部材と、こ
のシール部材を保護する補助シール部材とを組み合わせ
た密封装置に関する。TECHNICAL FIELD The present invention relates to a sealing device,
More particularly, the present invention relates to a sealing device in which a seal member having a seal lip and an auxiliary seal member for protecting the seal member are combined.
【０００２】[0002]
【従来の技術】自動製パン機、餅つき機またはミキサー
機等のように調理ケースの内部に回転羽根または回転刃
等の回転工具を設けた調理機においては、この回転工具
を回転させる軸がケーシングを縦方向に貫通して設けら
れている。したがってこの軸の周囲を正確に密封しない
と、一部の調理物や水分等が軸を伝って漏洩する不都合
がある。2. Description of the Related Art In a cooking machine such as an automatic bread maker, a rice cake making machine or a mixer, in which a rotating tool such as a rotating blade or a rotating blade is provided inside a cooking case, an axis for rotating the rotating tool is provided. The casing extends vertically through the casing. Therefore, if the periphery of the shaft is not accurately sealed, there is a disadvantage that some of the cooked food and moisture leak along the shaft.
【０００３】この種の用途に用いられる密封装置とし
て、従来、図１３に示す密封装置が知られており、この
密封装置は、以下のように構成されている。[0003] As a sealing device used for this kind of application, a sealing device shown in Fig. 13 is conventionally known, and this sealing device is configured as follows.
【０００４】すなわち、この密封装置は先ず、ケーシン
グ５１の内周面に嵌着されるケースシール部材５２と、
軸（図示せず）の周面に密接摺動するシールリップ５４
を備えた軸シール部材５３とを別部品として有してお
り、前者のケースシール部材５２の芯金５５の内周側に
後者の軸シール部材５３の芯金５６が嵌着されて、両シ
ール部材５２，５３が一体化されている。また後者の軸
シール部材５３の上面にその摩耗を防止するとともに調
理物との剥離性を付与するために、滑り性を備えた部材
よりなる補助シール部材５７が配置されており、この補
助シール部材５７は、その外周縁部５７ａが両芯金５
５，５６のフランジ部５５ａ，５６ａの間に挟持される
ことによって、両シール部材５２，５３の間に組み付け
られている。That is, this sealing device first includes a case sealing member 52 fitted on the inner peripheral surface of a casing 51,
Seal lip 54 that slides closely on the peripheral surface of a shaft (not shown)
And a shaft seal member 53 having a shaft seal member 53 provided as a separate part. A core bar 56 of the shaft seal member 53 is fitted on the inner peripheral side of a core bar 55 of the former case seal member 52, and both seals are provided. The members 52 and 53 are integrated. Further, an auxiliary seal member 57 made of a member having a slipperiness is disposed on the upper surface of the latter shaft seal member 53 in order to prevent the abrasion of the shaft seal member 53 and to provide the upper seal member 53 with releasability from a cooking object. 57, the outer peripheral edge 57a is
By being sandwiched between the flange portions 55a, 56a of the fifth and 56, the two seal members 52, 53 are assembled.
【０００５】上記構成を備えた密封装置は、シールリッ
プ５４を軸の周面に密接摺動させることにより軸の周囲
を密封することができ、しかも軸シール部材５３の上面
に補助シール部材５７を配置したためにこの補助シール
部材５７によってシール部材１を調理物等の密封対象物
から保護することができるが、尚、以下のような不都合
を有している。In the sealing device having the above structure, the periphery of the shaft can be sealed by sliding the seal lip 54 in close contact with the peripheral surface of the shaft, and the auxiliary seal member 57 is provided on the upper surface of the shaft seal member 53. Because of the arrangement, the auxiliary seal member 57 can protect the seal member 1 from an object to be sealed such as a cooking object, but has the following inconvenience.
【０００６】すなわち、補助シール部材５７を二つの芯
金５５，５６の間に挟み込むことによってこの補助シー
ル部材５７をシール部材に組み付ける構成であるため
に、シール部材がケースシール部材５２およびシール部
材５３の二部品に分けられている。したがって部品点数
が多く、製作に多くの手間と時間がかかり、コスト的に
も不利である。また芯金５５，５６同士を互いに嵌着す
る構成であるために、この芯金５５，５６を精度良く加
工して旨く嵌着しないと、この芯金５５，５６同士の間
から密封対象物が漏れる虞もある。That is, since the auxiliary seal member 57 is assembled to the seal member by sandwiching the auxiliary seal member 57 between the two metal cores 55 and 56, the seal members are the case seal member 52 and the seal member 53. Are divided into two parts. Therefore, the number of parts is large, and much labor and time are required for the production, which is disadvantageous in cost. Further, since the cores 55 and 56 are configured to be fitted to each other, if the cores 55 and 56 are not accurately processed and fitted properly, an object to be sealed will pass from between the cores 55 and 56. There is also a risk of leakage.
【０００７】[0007]
【発明が解決しようとする課題】本発明は以上の点に鑑
み、シール部材に対する補助シール部材の取付け構造に
工夫を凝らすことによってシール部材を二つに分ける必
要がなく、部品点数を削減することが可能であり、製作
を容易にすることが可能であり、しかもシール部材に対
して補助シール部材を容易に取り付けることが可能な密
封装置を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to reduce the number of parts without having to divide the seal member into two parts by devising a structure for attaching the auxiliary seal member to the seal member. It is an object of the present invention to provide a sealing device capable of facilitating manufacture and further enabling an auxiliary seal member to be easily attached to the seal member.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、本発明の密封装置は、ケーシングに固定され、軸の
周面にシールリップを密接させるシール部材と、前記シ
ール部材の軸方向一方に非接着で重ねられる補助シール
部材とを有し、前記シール部材に突起状の係合部が設け
られ、前記突起状の係合部を圧入する係合部が前記補助
シール部材に設けられ、前記両係合部の係合により前記
補助シール部材が前記シール部材に取り付けられること
にした。In order to achieve the above object, a sealing device according to the present invention comprises a sealing member fixed to a casing and having a sealing lip closely contacting a peripheral surface of a shaft; An auxiliary seal member which is superimposed non-adhesively, wherein the seal member is provided with a protruding engagement portion, and the auxiliary seal member is provided with an engagement portion for press-fitting the protruded engagement portion; The auxiliary seal member is attached to the seal member by engagement of the two engagement portions.
【０００９】上記構成を備えた本発明の密封装置は先
ず、ケーシングに固定されるとともに軸の周面にシール
リップを密接させるシール部材を有しており、このシー
ル部材に補助シール部材が組み合わされる。The sealing device of the present invention having the above-mentioned structure has a sealing member which is fixed to a casing and makes a seal lip closely contact with a peripheral surface of a shaft. An auxiliary sealing member is combined with this sealing member. .
【００１０】シール部材は、ケーシングに固定される機
能と、軸の周面にシールリップを密接させる機能の双方
を備えており、よって上記従来技術におけるケースシー
ル部材の機能と軸シール部材の機能とを兼ね備え、一部
品により構成されている。The seal member has both the function of being fixed to the casing and the function of bringing the seal lip into close contact with the peripheral surface of the shaft. Therefore, the function of the case seal member and the function of the shaft seal member in the above-mentioned prior art are provided. And is constituted by one part.
【００１１】一方、補助シール部材は、シール部材に設
けられたシールリップの摩耗を防止するとともにシール
部材に調理物等の密封対象物との剥離性を付与するため
に設けられるもので、この機能を発揮すべく、シール部
材の軸方向一方、すなわち密封対象物側に重ね配置され
る。またこの補助シール部材は、シール部材に設けられ
るシールリップと同材質または他材質の材料によって成
形されるが、上記したこの補助シール部材の機能からし
て、滑り性が良好な樹脂によって成形されるのが好適で
ある。On the other hand, the auxiliary seal member is provided to prevent the abrasion of the seal lip provided on the seal member and to give the seal member releasability from an object to be sealed such as a cooking object. In order to exhibit the above, the sealing member is disposed on one side in the axial direction, that is, on the sealing object side. The auxiliary seal member is formed of the same material or a different material as the seal lip provided on the seal member. However, due to the function of the auxiliary seal member, the auxiliary seal member is formed of a resin having good slipperiness. Is preferred.
【００１２】本発明において、シール部材に対する補助
シール部材の取付けは、シール部材の軸方向一方、すな
わち密封対象物側に補助シール部材を重ね合わせ、シー
ル部材に設けられた突起状の係合部を、補助シール部材
に対応して設けられた係合部に圧入することによって極
めて容易に行なわれる。突起状の係合部を対応する係合
部に圧入すると、両係合部が係合して補助シール部材が
シール部材に取り付けられ、かつ回り止めされる。In the present invention, the auxiliary seal member is mounted on the seal member by superimposing the auxiliary seal member on one side of the seal member in the axial direction, that is, on the side of the object to be sealed. This can be done very easily by press-fitting into an engagement portion provided corresponding to the auxiliary seal member. When the protruding engaging portions are press-fitted into the corresponding engaging portions, the two engaging portions are engaged, and the auxiliary seal member is attached to the seal member and is prevented from rotating.
【００１３】シールリップを備えたシール部材が芯金に
ゴム状弾性材を加硫接着するものである場合、シール部
材に設けられる突起状の係合部は、これを、このゴム状
弾性材の一部として設けるのが好適である。一方、補助
シール部材に対応して設けられる係合部は、これを、突
起状の係合部を圧入可能とすべく孔状、凹部状、スリッ
ト状または切欠状等に形成するが、圧入作業を容易化す
るために特に、孔状に形成するのが好適である。In the case where the sealing member provided with the sealing lip is formed by vulcanizing and bonding a rubber-like elastic material to the core metal, the projection-like engaging portion provided on the sealing member replaces the rubber-like elastic material with the rubber-like elastic material. It is preferable to provide it as a part. On the other hand, the engaging portion provided corresponding to the auxiliary seal member is formed in a hole shape, a concave shape, a slit shape, a notch shape, or the like so that the projecting engaging portion can be press-fitted. In particular, in order to facilitate the formation, it is preferable to form a hole.
【００１４】このように突起状の係合部がゴム状弾性材
製であり、補助シール部材側の対応する係合部が孔状で
ある場合、両係合部は圧入代の設定によって互いに係合
するのが一般であるが、突起状の係合部の先端部に孔状
の係合部の内径より大きな径のストッパを設けて、この
ストッパを孔状の係合部に圧入して孔状の係合部の反対
側まで貫通させると、組付け後、このストッパが孔状の
係合部の周縁に係合するために、一層堅固な抜け止め構
造が構成される。In the case where the projecting engaging portions are made of rubber-like elastic material and the corresponding engaging portions on the auxiliary sealing member side are hole-shaped, the engaging portions are engaged with each other by setting a press-fitting allowance. In general, a stopper having a diameter larger than the inner diameter of the hole-shaped engagement portion is provided at the tip of the projection-shaped engagement portion, and this stopper is pressed into the hole-shaped engagement portion to form a hole. When the stopper penetrates to the opposite side of the hole-shaped engaging portion, the stopper is engaged with the peripheral edge of the hole-shaped engaging portion after assembling, so that a more firm retaining structure is formed.
【００１５】また、この場合は、突起状の係合部の先端
に設けられる比較的大径のストッパによって抜け止め作
用が維持されるために、同じく突起状の係合部の、孔状
の係合部内に配置されるストッパ以外の柱状部分につい
ては、その径が孔状の係合部の内径より小さく設定され
ても良いことになる。そしてこの場合は、この柱状部分
の周面と孔状の係合部の内面との間に間隙が形成される
ために、この間隙の範囲内で、補助シール部材がシール
部材に対して軸直角方向に相対変位可能となり、これに
より軸に対する補助シール部材の偏心追随性を確保する
ことが可能となる。In this case, since the retaining action is maintained by a relatively large-diameter stopper provided at the tip of the protruding engaging portion, a hole-shaped engaging portion of the protruding engaging portion is also provided. The diameter of the columnar portion other than the stopper disposed in the joint may be set smaller than the inner diameter of the hole-shaped engaging portion. In this case, since a gap is formed between the peripheral surface of the columnar portion and the inner surface of the hole-shaped engaging portion, the auxiliary seal member is perpendicular to the axis of the seal member within the range of the gap. Relative displacement in the direction, whereby it is possible to ensure the eccentric followability of the auxiliary seal member with respect to the shaft.
【００１６】[0016]
【発明の実施の形態】つぎに本発明の実施形態を図面に
したがって説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.
【００１７】図１は、当該実施形態に係る密封装置をケ
ーシング２１の内周に嵌着した状態の要部断面を示して
いる。図２は、シール部材１を軸方向から見た平面図で
あって図１におけるＡ方向矢視図、図３は補助シール部
材１１を軸方向から見た平面図であって図１におけるＡ
方向矢視図、図４は互いに係合した係合部１２，１３の
拡大断面図である。FIG. 1 is a cross-sectional view of a main part in a state where the sealing device according to the embodiment is fitted on the inner periphery of a casing 21. FIG. 2 is a plan view of the seal member 1 viewed from the axial direction, and is a view in the direction of arrow A in FIG. 1. FIG. 3 is a plan view of the auxiliary seal member 11 viewed from the axial direction.
FIG. 4 is an enlarged sectional view of the engaging portions 12 and 13 engaged with each other.
【００１８】図示したように、当該実施形態に係る密封
装置は、芯金（取付環または補強環とも称する）２にゴ
ム状弾性材（ゴム状弾性体とも称する）３を加硫接着し
たシール部材（メインシールとも称する）１と、このシ
ール部材１の上面に重ねられた補助シール部材（補助シ
ールとも称する）１１と、シール部材１に設けられたシ
ールリップ７に軸（回転軸とも称する）２２に対する緊
締力を付与するガータスプリング１０とによって構成さ
れており、シール部材１が、ケーシング（ハウジングと
も称する）２１に設けられた環状の凹段部２１ａにその
上方から圧入されることによって、密封装置全体がケー
シング２１の内周に装着されるようになっている。各部
品は環状である。As shown in the figure, the sealing device according to the present embodiment is a seal member in which a rubber-like elastic material (also called a rubber-like elastic body) 3 is vulcanized and bonded to a core metal (also called a mounting ring or a reinforcing ring) 2. (Also referred to as a main seal) 1, an auxiliary seal member (also referred to as an auxiliary seal) 11 superposed on the upper surface of the seal member 1, and a shaft (also referred to as a rotation shaft) 22 on a seal lip 7 provided on the seal member 1. The sealing member 1 is press-fitted into an annular concave step portion 21 a provided in a casing (also referred to as a housing) 21 from above, thereby forming a sealing device. The whole is mounted on the inner periphery of the casing 21. Each part is annular.
【００１９】シール部材１の芯金２は、筒状部２ａと、
その上端に径方向内方に向けて一体成形されたフランジ
部２ｂとを一体に備えており、これにより断面略Ｌ字形
に成形されている。The core metal 2 of the seal member 1 includes a cylindrical portion 2a,
At its upper end, a flange portion 2b integrally formed radially inward is integrally provided, and is thereby formed into a substantially L-shaped cross section.
【００２０】この芯金２に加硫接着されたゴム状弾性材
３は、芯金２の筒状部２ａの下端面および外周面に接着
されて、芯金２がケーシング２１の凹段部２１ａに嵌着
されたときに凹段部２１ａの内面に密接して芯金２およ
びケーシング２１間をシールする外周シール部４と、筒
状部２ａの内周面に接着されてこれを保護する内側被覆
部５と、芯金２のフランジ部２ｂの内周端部に下向きに
設けられた略円筒形を呈するシールリップ保持部６と、
このシールリップ保持部６の内周面に設けられて装着時
に軸２２の周面に摺動自在に密接するシールリップ７
と、フランジ部２ｂの上端面に接着されてこれを保護す
るとともに外周シール部４およびシールリップ保持部６
を連結した上側被覆部８と、フランジ部２ｂの下端面に
接着されてこれを保護するとともに内側被覆部５および
シールリップ保持部６を連結した下側被覆部９とを一体
に備えており、全体として芯金２を被包している。The rubber-like elastic material 3 vulcanized to the metal core 2 is bonded to the lower end surface and the outer peripheral surface of the cylindrical portion 2 a of the metal core 2, and the metal core 2 is attached to the concave step portion 21 a of the casing 21. And an outer sealing portion 4 which is in close contact with the inner surface of the recessed step portion 21a to seal the space between the cored bar 2 and the casing 21 when it is fitted to the inner surface of the cylindrical portion 2a which is adhered to and protects the inner portion. A coating portion 5, a substantially cylindrical seal lip holding portion 6 provided downward on the inner peripheral end of the flange portion 2 b of the cored bar 2,
A seal lip 7 provided on the inner peripheral surface of the seal lip holding portion 6 and slidably in contact with the peripheral surface of the shaft 22 at the time of mounting.
And the upper end surface of the flange portion 2b to protect and protect the outer peripheral seal portion 4 and the seal lip holding portion 6.
Are integrally provided with an upper covering portion 8 connecting the inner covering portion 5 and the lower covering portion 9 connected to the inner covering portion 5 and the seal lip holding portion 6 while being bonded to and protecting the lower end surface of the flange portion 2b. The core metal 2 is entirely covered.
【００２１】シールリップ７は、上下に複数、図では二
つが設けられ、それぞれがシール受圧面７ａを上方に向
けて、軸２２の周面を伝ってくる調理物等の密封対象物
をシールするようになっている。また下側のシールリッ
プ７に軸２２に対する緊迫力を付与するために、このシ
ールリップ７の外周に位置して、シールリップ保持部６
の外周面にガータスプリング１０が嵌着されている。A plurality of seal lips 7 are provided at the top and bottom, and two are provided in the figure. Each seal lip 7 has a seal pressure receiving surface 7a facing upward and seals an object to be sealed such as a cooking object traveling along the peripheral surface of the shaft 22. It has become. In addition, in order to apply a tightening force to the shaft 22 to the lower seal lip 7, the seal lip 7 is located on the outer periphery of the seal lip 7.
A garter spring 10 is fitted to the outer peripheral surface of the garter spring.
【００２２】シール部材１の上面に重ねられる補助シー
ル部材１１は、レアフロン（登録商標）等の滑り性の良
好な合成樹脂（四弗化エチレン樹脂）によって略蛇の目
状に成形されており、シール部材１のゴム状弾性材３の
上側被覆部８の上面形状に合わせて平板状に成形された
外周部１１ａと、上側のシールリップ７の上面形状に合
わせてテーパ状に成形された内周部１１ｂとを一体に備
えており、装着時、内周部１１ｂの内周端部が軸２２の
周面に密接摺動する。The auxiliary seal member 11 to be superimposed on the upper surface of the seal member 1 is made of a synthetic resin (e.g., tetrafluoroethylene resin) having good slipperiness such as Rare-Flon (registered trademark), and is formed into a substantially serpentine shape. An outer peripheral portion 11a formed into a flat plate shape according to the upper surface shape of the upper covering portion 8 of the rubber-like elastic material 3 and an inner peripheral portion 11b formed into a taper shape according to the upper surface shape of the upper seal lip 7. And the inner peripheral end of the inner peripheral portion 11b slides closely on the peripheral surface of the shaft 22 when mounted.
【００２３】シール部材１において、ゴム状弾性材３の
上側被覆部８の上面に、上方向に向けて突起状の係合部
（突起とも称する）１２が複数、図では四つ、等配状に
設けられており、これに対応して、補助シール部材１１
の外周部１１ａに孔状の係合部（通し穴とも称する）１
３が複数、図では四つ、等配状に設けられており、前者
の突起状の係合部１２がそれぞれ後者の孔状の係合部１
３に圧入され、両係合部１２，１３が係合することによ
って、補助シール部材１１がシール部材１に取り付けら
れている。In the seal member 1, on the upper surface of the upper covering portion 8 of the rubber-like elastic material 3, a plurality of engaging portions (also referred to as projecting portions) 12 projecting upward, four in the figure, equally distributed. Corresponding to the auxiliary seal member 11.
A hole-shaped engaging portion (also referred to as a through hole) 1
A plurality of, three in the figure, four are provided in an equidistant manner, and the former protruding engagement portions 12 are respectively provided with the latter hole-shaped engagement portions 1.
3, the auxiliary seal member 11 is attached to the seal member 1 by the engagement of the two engagement portions 12, 13.
【００２４】図４に拡大して示すように、突起状の係合
部１２は、ゴム状弾性材３の上側被覆部８の上面に上向
きに一体成形された柱状部１２ａと、この柱状部１２ａ
の上端部に一体成形された比較的大径のストッパ１２ｂ
とを一体に備えており、略円柱形に成形された柱状部１
２ａの先端に、平面形状（Ａ方向から見た形状）を略円
形に成形されたストッパ１２ｂが同軸上に一体成形され
ている。孔状の係合部１３の開口形状は略円形である。
また突起状の係合部１２は、柱状部１２ａの外径寸法を
孔状の係合部１３の内径寸法より小さく設定されてお
り、これに対してストッパ１２ｂの外径寸法を孔状の係
合部１３の内径寸法より大きく設定されている。またス
トッパ１２ｂの上面外周部に、このストッパ１２ｂを孔
状の係合部１３に圧入し易くするために、テーパ状の傾
斜面（カット部とも称する）１２ｃが設けられており、
同じくストッパ１２ｂの下面部に、このストッパ１２ｂ
を圧入時に弾性変形し易くするテーパ状の傾斜面１２ｄ
が設けられている。傾斜面１２ｃ，１２ｄは何れも径方
向内方から外方に向けて漸次下降する向きに形成されて
いる。As shown in FIG. 4 in an enlarged manner, the projection-like engaging portion 12 includes a columnar portion 12a integrally formed upward on the upper surface of the upper covering portion 8 of the rubber-like elastic material 3, and a columnar portion 12a.
A relatively large diameter stopper 12b integrally formed at the upper end of the
And a columnar part 1 formed in a substantially cylindrical shape.
A stopper 12b having a substantially circular planar shape (a shape viewed from the direction A) is formed coaxially and integrally with the tip of 2a. The opening shape of the hole-shaped engaging portion 13 is substantially circular.
In the projection-shaped engaging portion 12, the outer diameter of the columnar portion 12a is set to be smaller than the inner diameter of the hole-shaped engaging portion 13. On the other hand, the outer diameter of the stopper 12b is changed to the hole-shaped engaging portion. It is set larger than the inner diameter of the joint 13. Further, a tapered inclined surface (also referred to as a cut portion) 12c is provided on the outer peripheral portion of the upper surface of the stopper 12b in order to easily press-fit the stopper 12b into the hole-shaped engaging portion 13.
Similarly, the stopper 12b is provided on the lower surface of the stopper 12b.
Tapered inclined surface 12d that facilitates elastic deformation during press-fitting
Is provided. Each of the inclined surfaces 12c and 12d is formed so as to gradually descend from the inside in the radial direction to the outside.
【００２５】ストッパ１２ｂを孔状の係合部１３に弾性
変形させつつ圧入して、孔状の係合部１３の反対側（上
側）に貫通させると、このストッパ１２ｂが弾性復帰し
て図示した形状に復帰し、爾後、その外周縁部が孔状の
係合部１３の開口周縁部に係合するために、これにより
抜け止め機能が発揮される。圧入後、ストッパ１２ｂの
下面部は、孔状の係合部１３の開口周縁部と常時接触し
ても良いが、図示したように孔状の係合部１３の開口周
縁部との間に若干の間隙（軸方向間隙）１４が設けられ
るようにしても良く、このようにすると、補助シール部
材１１がシール部材１に対して軸直角方向に相対変位し
易くなるために、後記する軸２２の偏心に対する補助シ
ール部材１１の追随性を向上させることが可能となる。When the stopper 12b is pressed into the hole-shaped engaging portion 13 while being elastically deformed, and penetrates the opposite side (upper side) of the hole-shaped engaging portion 13, the stopper 12b is elastically restored and is shown in the figure. After returning to the shape, the outer peripheral edge thereof is engaged with the opening peripheral portion of the hole-shaped engaging portion 13, so that the retaining function is exhibited. After the press-fitting, the lower surface of the stopper 12b may always be in contact with the peripheral edge of the opening of the hole-shaped engaging portion 13; A gap (axial gap) 14 may be provided. In this case, the auxiliary seal member 11 is easily displaced relative to the seal member 1 in a direction perpendicular to the axis. The followability of the auxiliary seal member 11 to eccentricity can be improved.
【００２６】また上記した柱状部１２ａおよびストッパ
１２ｂを一体に備えた突起状の係合部１２が孔状の係合
部１３に圧入されると、突起状の係合部１２の柱状部１
２ａの周面と孔状の係合部１３の内面との間に所定の大
きさを間隙（軸直角方向間隙）１５が設定されるため
に、この間隙１５の範囲内で、補助シール部材１１がシ
ール部材１に対して軸直角方向に相対変位することが可
能となり、これにより軸２２の偏心に対する補助シール
部材１１の追随性を確保することが可能となる。When the projection-shaped engaging portion 12 integrally provided with the columnar portion 12a and the stopper 12b is press-fitted into the hole-shaped engaging portion 13, the columnar portion 1 of the projecting engaging portion 12 is pressed.
Since a gap (a gap perpendicular to the axis) 15 having a predetermined size is set between the peripheral surface of the base 2a and the inner surface of the hole-shaped engaging portion 13, the auxiliary seal member 11 is set within the range of the gap 15. Can be relatively displaced in the direction perpendicular to the axis with respect to the seal member 1, whereby the followability of the auxiliary seal member 11 to the eccentricity of the shaft 22 can be ensured.
【００２７】上記構成を備えた密封装置は、例えば自動
製パン機内部のケーシング２１内周に装着されて軸２２
の周囲を密封するものであって、上記構成により以下の
作用効果を奏する点に特徴を有している。The sealing device having the above structure is mounted on the inner periphery of a casing 21 inside an automatic bread maker, for example, and is mounted on a shaft 22.
And is characterized in that the following functions and effects are achieved by the above configuration.
【００２８】すなわち先ず、シール部材１に設けられた
複数のシールリップ７が軸２２の周面に密接摺動すると
ともに、同じくシール部材１に設けられた外周シール部
４がケーシング２１の内面に密接するために、調理物ま
たは水分等の密封対象物を十分にシールすることができ
る。また反対に、外部から機内へダスト等が侵入するの
を防止することもできる。First, the plurality of seal lips 7 provided on the seal member 1 slide closely on the peripheral surface of the shaft 22, and the outer peripheral seal portion 4 also provided on the seal member 1 comes in close contact with the inner surface of the casing 21. Therefore, the object to be hermetically sealed, such as food or moisture, can be sufficiently sealed. Conversely, it is possible to prevent dust and the like from entering the inside of the machine from the outside.
【００２９】また上記従来技術のようにシール部材１が
複数の部品に分割されておらず、シール部材１が芯金２
にゴム状弾性材３を加硫接着した唯一の加硫成形品によ
って構成されているために、上記従来技術と比較して部
品点数を削減することができ、その製作を容易にするこ
とができ、コスト的にも有利である。Further, the seal member 1 is not divided into a plurality of parts as in the prior art, and the seal member 1 is
Since it is constituted by only a vulcanized molded product obtained by vulcanizing and bonding the rubber-like elastic material 3, the number of parts can be reduced as compared with the above-mentioned conventional technology, and the production thereof can be facilitated. It is also advantageous in terms of cost.
【００３０】またシール部材１に、そのゴム状弾性材３
の一部として設けた突起状の係合部１２を、補助シール
部材１１に設けた孔状の係合部１３に圧入するのみで、
補助シール部材１１をシール部材１に取り付けることが
できるために、取付け作業が簡単である。Further, the rubber-like elastic material 3
The protrusion-shaped engaging portion 12 provided as a part of is merely pressed into the hole-shaped engaging portion 13 provided in the auxiliary seal member 11,
Since the auxiliary seal member 11 can be attached to the seal member 1, the attachment operation is simple.
【００３１】また突起状の係合部１２を孔状の係合部１
３に圧入して両係合部１２，１３を係合することによっ
てシール部材１に対して補助シール部材１１を抜け止め
および回り止めしたために、この抜け止めおよび回り止
めの機能を確保するために他に部品を必要としない。ま
たシール部材１に非円形の凹部を設けて、この凹部に外
形非円形とした補助シール部材１１を嵌めこむといった
特殊な形状の回り止め構造を設ける必要もない。Further, the projection-shaped engaging portion 12 is replaced with the hole-shaped engaging portion 1.
3 to prevent the auxiliary seal member 11 from slipping out and rotating from the seal member 1 by engaging the two engaging portions 12 and 13 with each other. No other components are required. Further, it is not necessary to provide a non-circular concave portion in the seal member 1 and to fit a specially shaped detent structure in which the auxiliary seal member 11 having a non-circular outer shape is fitted into the concave portion.
【００３２】更にまた、突起状の係合部１２の柱状部１
２ａの径が孔状の係合部１３の内径より小さく設定され
ていて、柱状部１２ａの周面と孔状の係合部１３の内面
との間に間隙１５が形成されているために、この間隙１
５の範囲内で、補助シール部材１１がシール部材１に対
して相対変移することが可能である。したがってシール
部材１がケーシング２１に固定されても、補助シール部
材１１が軸２２の偏心に追随し、これによりシール機能
ないしシールリップ保護機能を向上させることができ
る。Further, the columnar portion 1 of the projecting engagement portion 12
Since the diameter of 2a is set smaller than the inner diameter of the hole-shaped engaging portion 13, the gap 15 is formed between the peripheral surface of the columnar portion 12a and the inner surface of the hole-shaped engaging portion 13. This gap 1
Within the range of 5, the auxiliary seal member 11 can be displaced relative to the seal member 1. Therefore, even if the seal member 1 is fixed to the casing 21, the auxiliary seal member 11 follows the eccentricity of the shaft 22, whereby the sealing function or the seal lip protection function can be improved.
【００３３】シール部材１に設けられる突起状の係合部
１２の形状には、上記の他にも様々なものが考えられ
る。以下は、その例である。Various shapes other than those described above are conceivable for the shape of the projecting engagement portion 12 provided on the seal member 1. The following is an example.
【００３４】図５に示すように、ストッパ１２ｂの平面
形状を、複数、図では四つの突片１２ｄを放射状に設け
た花びら形状とする。このようにすると、ストッパ１２
ｂを孔状の係合部１３に圧入するときに、ストッパ１２
ｂが弾性変形し易くなる。As shown in FIG. 5, the planar shape of the stopper 12b is a petal shape in which a plurality of, in the figure, four projecting pieces 12d are provided radially. By doing so, the stopper 12
b is pressed into the hole-shaped engaging portion 13 when the stopper 12 is pressed.
b is easily elastically deformed.
【００３５】また図６に示すように、ストッパ１２ｂの
形状を略算盤珠形状とする。また図７に示すように、ス
トッパ１２ｂの形状を略球形とする。As shown in FIG. 6, the shape of the stopper 12b is substantially an abacus. Further, as shown in FIG. 7, the shape of the stopper 12b is substantially spherical.
【００３６】更にまた、第二実施形態として図８ないし
図１２に示すように、ストッパ１２ｂの平面形状を円周
方向に長い略円弧形ないし長円形または楕円形とし、こ
れに対応して、孔状の係合部１３の開講形状を円周方向
に長い略円弧形ないし長円形または楕円形とする。この
ようにすると、係合部１２，１３同士の係合面積が増加
するために、係合力を増大させることができる。Further, as shown in FIGS. 8 to 12, as a second embodiment, the planar shape of the stopper 12b is a substantially arc-shaped or oval or elliptical shape which is long in the circumferential direction. The opening shape of the hole-shaped engaging portion 13 is set to be a substantially circular arc, an oval, or an ellipse that is long in the circumferential direction. With this configuration, the engagement area between the engagement portions 12 and 13 increases, so that the engagement force can be increased.
【００３７】[0037]
【発明の効果】本発明は、以下の効果を奏する。The present invention has the following effects.
【００３８】すなわち、上記構成を備えた本発明の密封
装置においては先ず、シールリップを備えたシール部材
が複数の部品に分割されておらず、唯一の成形品によっ
て構成されているために、従来技術と比較して部品点数
を削減することができ、その製作を容易にすることがで
き、コスト的にも有利な製品を提供することができる。That is, in the sealing device of the present invention having the above configuration, first, since the sealing member having the sealing lip is not divided into a plurality of parts and is constituted by only one molded product, Compared with the technology, the number of parts can be reduced, the manufacture thereof can be facilitated, and a product which is advantageous in cost can be provided.
【００３９】またシール部材に設けた突起状の係合部
を、補助シール部材に対応して設けた係合部に圧入する
のみで、補助シール部材をシール部材に取り付けること
ができるようにしたために、取付け作業が簡単である。Also, the auxiliary seal member can be attached to the seal member only by press-fitting the projecting engagement portion provided on the seal member into the engagement portion provided corresponding to the auxiliary seal member. The installation work is simple.
【００４０】また突起状の係合部を、対応して設けた係
合部に圧入して両係合部を係合することによってシール
部材に対して補助シール部材を抜け止めおよび回り止め
するようにしたために、この抜け止めおよび回り止めの
機能を確保するために他に部品を必要とせず、当該密封
装置のみによってその組付けおよび装着を完了すること
ができる。Further, the projection-shaped engaging portion is press-fitted into the correspondingly provided engaging portion to engage the two engaging portions so as to prevent the auxiliary seal member from coming off and rotating from the seal member. As a result, no other parts are required to secure the function of retaining and preventing rotation, and the assembling and mounting can be completed only by the sealing device.
【図１】本発明の第一実施形態に係る密封装置をケーシ
ングの内周に嵌着した状態の要部断面図FIG. 1 is a cross-sectional view of a main part in a state where a sealing device according to a first embodiment of the present invention is fitted to an inner periphery of a casing.
【図２】シール部材を軸方向から見た平面図であって図
１におけるＡ方向矢視図FIG. 2 is a plan view of the seal member viewed from the axial direction, and is a view as seen in the direction of arrow A in FIG.
【図３】補助シール部材を軸方向から見た平面図であっ
て図１におけるＡ方向矢視図3 is a plan view of the auxiliary seal member as viewed from the axial direction, and is a view as seen in the direction of arrow A in FIG. 1;
【図４】互いに係合した一対の係合部の拡大断面図FIG. 4 is an enlarged sectional view of a pair of engaging portions engaged with each other;
【図５】突起状の係合部の他の例を示す斜視図FIG. 5 is a perspective view showing another example of the protruding engagement portion.
【図６】突起状の係合部の他の例を示す断面図FIG. 6 is a cross-sectional view showing another example of the protruding engagement portion.
【図７】突起状の係合部の他の例を示す断面図FIG. 7 is a cross-sectional view showing another example of the protruding engagement portion.
【図８】本発明の第二実施形態に係る密封装置をケーシ
ングの内周に嵌着した状態の要部断面図FIG. 8 is a cross-sectional view of a main part in a state where the sealing device according to the second embodiment of the present invention is fitted to the inner periphery of a casing.
【図９】シール部材を軸方向から見た平面図であって図
８におけるＢ方向矢視図9 is a plan view of the seal member viewed from the axial direction, and is a view as seen in the direction of arrow B in FIG.
【図１０】補助シール部材を軸方向から見た平面図であ
って図８におけるＢ方向矢視図10 is a plan view of the auxiliary seal member viewed from the axial direction, and is a view as seen in the direction of arrow B in FIG. 8;
【図１１】互いに係合した一対の係合部の一部切欠した
斜視図FIG. 11 is a partially cutaway perspective view of a pair of engaging portions engaged with each other.
【図１２】互いに係合した一対の係合部の拡大断面図FIG. 12 is an enlarged sectional view of a pair of engaging portions engaged with each other;
【図１３】従来例に係る密封装置をケーシングの内周に
嵌着した状態の要部断面図FIG. 13 is a cross-sectional view of a main part in a state where a sealing device according to a conventional example is fitted to the inner periphery of a casing.
１ シール部材 ２ 芯金 ２ａ 筒状部 ２ｂ フランジ部 ３ ゴム状弾性材 ４ 外周シール部 ５ 内側被覆部 ６ シールリップ保持部 ７ シールリップ ７ａ 受圧面 ８ 上側被覆部 ９ 下側被覆部 １０ ガータスプリング １１ 補助シール部材 １１ａ 外周部 １１ｂ 内周部 １２，１３ 係合部 １２ａ 柱状部 １２ｂ ストッパ １２ｃ，１２ｄ 傾斜面 １２ｅ 突片 １４，１５ 間隙 ２１ ケーシング ２１ａ 凹段部 ２２ 軸 DESCRIPTION OF SYMBOLS 1 Seal member 2 Core 2a Cylindrical part 2b Flange part 3 Rubber-like elastic material 4 Outer peripheral seal part 5 Inner covering part 6 Seal lip holding part 7 Seal lip 7a Pressure receiving surface 8 Upper covering part 9 Lower covering part 10 Garter spring 11 Auxiliary seal member 11a Outer peripheral portion 11b Inner peripheral portion 12, 13 Engagement portion 12a Columnar portion 12b Stopper 12c, 12d Inclined surface 12e Projection piece 14, 15 Gap 21 Casing 21a Recessed step 22 Shaft
Claims (1)
２）の周面にシールリップ（７）を密接させるシール部
材（１）と、前記シール部材（１）の軸方向一方に非接
着で重ねられる補助シール部材（１１）とを有し、 前記シール部材（１）に突起状の係合部（１２）が設け
られ、前記突起状の係合部（１２）を圧入する係合部
（１３）が前記補助シール部材（１１）に設けられ、前
記両係合部（１２）（１３）の係合により前記補助シー
ル部材（１１）が前記シール部材（１）に取り付けられ
ることを特徴とする密封装置。1. A shaft (2) fixed to a casing (21).
A sealing member (1) for bringing a sealing lip (7) into close contact with the peripheral surface of (2), and an auxiliary sealing member (11) that is non-adhesively superimposed on one axial direction of the sealing member (1); The member (1) is provided with a protruding engaging portion (12), and the engaging portion (13) for press-fitting the protruding engaging portion (12) is provided on the auxiliary seal member (11). The sealing device, wherein the auxiliary seal member (11) is attached to the seal member (1) by engagement of the engagement portions (12) and (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32964097A JP3567964B2 (en) | 1997-11-14 | 1997-11-14 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32964097A JP3567964B2 (en) | 1997-11-14 | 1997-11-14 | Sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11148558A true JPH11148558A (en) | 1999-06-02 |
| JP3567964B2 JP3567964B2 (en) | 2004-09-22 |
Family
ID=18223609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32964097A Expired - Fee Related JP3567964B2 (en) | 1997-11-14 | 1997-11-14 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3567964B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364757A (en) * | 2001-06-08 | 2002-12-18 | Koyo Sealing Techno Co Ltd | Sealing device |
| JP2005193357A (en) * | 2004-01-09 | 2005-07-21 | Fanuc Ltd | Multistage oil seal of motor for machine tool |
| JP2007146879A (en) * | 2005-11-24 | 2007-06-14 | Toyota Industries Corp | Shaft seal construction |
| JP2008025788A (en) * | 2006-07-25 | 2008-02-07 | Nok Corp | Sealing device |
| JP2009097606A (en) * | 2007-10-16 | 2009-05-07 | Nok Corp | Sealing device |
| KR20190011760A (en) * | 2016-05-20 | 2019-02-07 | 트렐레보르크 씰링 솔루션즈 저머니 게엠베하 | Rotary seal assemblies with pressure-actuatable rotary seals, and rotary seals with pressure-activatable rotary seals and rotary seals. |
| JP2020060276A (en) * | 2018-10-12 | 2020-04-16 | Nok株式会社 | Sealing device of cooker |
-
1997
- 1997-11-14 JP JP32964097A patent/JP3567964B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002364757A (en) * | 2001-06-08 | 2002-12-18 | Koyo Sealing Techno Co Ltd | Sealing device |
| JP2005193357A (en) * | 2004-01-09 | 2005-07-21 | Fanuc Ltd | Multistage oil seal of motor for machine tool |
| JP2007146879A (en) * | 2005-11-24 | 2007-06-14 | Toyota Industries Corp | Shaft seal construction |
| JP4595793B2 (en) * | 2005-11-24 | 2010-12-08 | 株式会社豊田自動織機 | Shaft seal structure |
| JP2008025788A (en) * | 2006-07-25 | 2008-02-07 | Nok Corp | Sealing device |
| JP2009097606A (en) * | 2007-10-16 | 2009-05-07 | Nok Corp | Sealing device |
| KR20190011760A (en) * | 2016-05-20 | 2019-02-07 | 트렐레보르크 씰링 솔루션즈 저머니 게엠베하 | Rotary seal assemblies with pressure-actuatable rotary seals, and rotary seals with pressure-activatable rotary seals and rotary seals. |
| JP2019516929A (en) * | 2016-05-20 | 2019-06-20 | トレルボルグ シーリング ソリューションズ ジャーマニー ゲーエムベーハーＴｒｅｌｌｅｂｏｒｇ Ｓｅａｌｉｎｇ Ｓｏｌｕｔｉｏｎｓ Ｇｅｒｍａｎｙ ＧｍｂＨ | Rotary seal assembly having pressure actuable rotary seal, and rotary seal |
| JP2020060276A (en) * | 2018-10-12 | 2020-04-16 | Nok株式会社 | Sealing device of cooker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3567964B2 (en) | 2004-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4427206A (en) | Oil seal assembly with unbonded backup ring | |
| JP5216084B2 (en) | Lip type seal | |
| US4212474A (en) | Seal ring having tapered surface and sealing device incorporating the same | |
| US6273428B1 (en) | Annular seal assembly, in particular for the drive shaft of a vehicle | |
| JPS63297811A (en) | Ball joint for automobile | |
| JP3567964B2 (en) | Sealing device | |
| US2866656A (en) | Mechanical seal between rotary and coaxial mechanical members | |
| EP3187756B1 (en) | Mechanical seal | |
| US5884919A (en) | Sealing device and sealing device manufacturing method | |
| JP6756053B2 (en) | Sealing device | |
| JPH10115375A (en) | Oil seal device | |
| JPH0712762Y2 (en) | Sealing device | |
| US20210196088A1 (en) | Fluid Damper Device and Apparatus with the Damper | |
| JPH11336916A (en) | Butterfly valve in which performance of shaft seal is ensured and assemblage is improved | |
| EP1686296B1 (en) | Lip seal and manufacturing method thereof | |
| EP1640644A1 (en) | Oil seal | |
| JPH0446137Y2 (en) | ||
| JP4773654B2 (en) | Injection pipe seal | |
| JP2567274Y2 (en) | Lip packing | |
| JP4609636B2 (en) | Sealing device | |
| WO2006022348A1 (en) | Seal structure for change over switch | |
| JPH0131810Y2 (en) | ||
| JP2001183955A (en) | Toner seal | |
| JPH0337483A (en) | Lip seal device | |
| JPS6136835Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040218 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040416 |
|
| 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: 20040526 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040608 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |