JP2011163388A5 - - Google Patents
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- JP2011163388A5 JP2011163388A5 JP2010024437A JP2010024437A JP2011163388A5 JP 2011163388 A5 JP2011163388 A5 JP 2011163388A5 JP 2010024437 A JP2010024437 A JP 2010024437A JP 2010024437 A JP2010024437 A JP 2010024437A JP 2011163388 A5 JP2011163388 A5 JP 2011163388A5
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- Prior art keywords
- link plate
- lip
- bush
- seal member
- central base
- 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.)
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Description
また、図10(b)の形状の場合も、第2のリップ部32bが同幅にて径方向に延びるように形成されているため、シールチェーンがオフセット状態となってシール潰し量が変化した場合に、この変化に対応しにくく接触圧が大きくなる部分と小さくなる部分との接触圧の差が大きくなると考えられる。なお、第1のリップ部32aに関しては、径方向中間部の幅が大きく基端部の幅が小さいため、該基端部で上記シール潰し量の変化を多少は吸収でき、図10(a)の形状よりもオフセットによる接触圧の差を小さくできると考えられる。 Also in the case of the shape of FIG. 10B, the second lip portion 3 2 b is formed to extend in the radial direction with the same width, so that the seal chain is in an offset state and the amount of crushing of the seal is reduced. In the case of a change, it is considered that the difference in contact pressure between the portion where the contact pressure is large and the portion where the contact pressure is small is difficult to cope with this change. Regarding the first lip portion 3 2 a, since the width of the radial intermediate portion is large and the width of the base end portion is small, the change in the amount of seal crushing can be absorbed somewhat at the base end portion. It is considered that the difference in contact pressure due to offset can be made smaller than the shape of a ).
上記課題を解決するため、本発明は、インナーリンクプレート(16)よりブシュ(17)を一部突出し、該突出部(17a)を囲むようにかつインナーリンクプレート(16)とアウターリンクプレート(18)との間に挟持されるようにリング状のシール部材(13)を配置し、
前記シール部材(13)は、自然状態における断面が十字形状からなり、中央基部(13e)と、該中央基部(13e)から内径方向に延びる第1のリップ部(13a)と、前記中央基部(13e)から外径方向に延びる第2のリップ部(13b)と、前記中央基部(13e)から左右方向(図2、3の上下方向)に延びる第3及び第4のリップ部(13c)(13d)とを有し、
前記第1のリップ部(13a)を、前記ブシュの突出部(17a)先端と前記アウターリンクプレート(18)との間に配置した状態で、アウターリンクプレート(18)をインナーリンクプレート(16)に接近する方向に移動して、前記シール部材(13)が、前記ブシュの突出部(17a)との接触に基づく回転モーメントにより捩られ、断面略々X字状に変形して前記インナーリンクプレート(16)と前記アウターリンクプレート(18)との間に挟持されてなる、シールチェーン(11)に関する。
In order to solve the above-mentioned problems, the present invention has a structure in which the bush (17) is partially protruded from the inner link plate (16) so as to surround the protruding portion (17a) and the inner link plate (16) and the outer link plate (18). The ring-shaped sealing member (13) is disposed so as to be sandwiched between
The seal member (13) has a cross-section in a natural state having a cross shape, a central base (13e), a first lip portion (13a) extending from the central base (13e) in an inner diameter direction, and the central base ( 13e) a second lip portion (13b) extending in the outer diameter direction, and third and fourth lip portions (13c) (13c) extending in the left-right direction (vertical direction in FIGS. 2 and 3 ) from the central base portion (13e) . 13d)
With the first lip portion (13a) disposed between the front end of the bushing projection (17a) and the outer link plate (18), the outer link plate (18) is moved to the inner link plate (16). The seal member (13) is twisted by a rotational moment based on contact with the projection (17a) of the bush , and is deformed into a substantially X-shaped cross section. The present invention relates to a seal chain (11) sandwiched between (16) and the outer link plate (18).
好ましくは、自然状態において、前記第1及び第2のリップ部(13a)(13b)のくびれ部(13f)の湾曲凹面(13h)は、前記シール部材(13)の左右方向(図2、3の上下方向)の寸法の0.12倍以上の曲率半径(r2)を有する。なお、前記湾曲凹面(13h)の曲率半径(r2)は、好ましくは前記シール部材の左右方向の寸法の0.2倍以下とし、より好ましくは0.15倍以下とする。 Preferably, in a natural state, the curved concave surface (13 h ) of the constricted portion (13f) of the first and second lip portions (13a) (13b) is formed in the left-right direction of the seal member (13) (FIG. 2, 3 ) and a radius of curvature (r 2 ) of 0.12 times or more. In addition, the curvature radius (r 2 ) of the curved concave surface (13 h ) is preferably 0.2 times or less, more preferably 0.15 times or less the horizontal dimension of the seal member.
シール部材13は、図2に示すように、ゴムなどの弾性材をリング状に形成したもので、自然状態にあって断面が十(プラス)字状で、左右方向(図1の上下方向)の幅寸法Hが前記クリアランスiよりも大きい。例えば、i/Hが50〜70%である。このようなシール部材13は、前述の図9に示した場合と同様に、インナーリンクプレート16とアウターリンクプレート18との間に挟持される装着状態では、断面略々X字状となる。そして、ピン12及びブシュ17との間の軸受空間にグリース又はオイル等の潤滑剤を封入する。前記シール部材13は、装着された状態でアウターリンクプレート18及びインナーリンクプレート16との間に所定量圧縮されているが、該シール部材13の材料であるゴムは、比較的硬いものが用いられている。 As shown in FIG. 2, the seal member 13 is formed by forming an elastic material such as rubber in a ring shape. The seal member 13 is in a natural state and has a cross-section with a plus (+) shape, and the horizontal direction (the vertical direction in FIG. 1). Is larger than the clearance i. For example, i / H is 50 to 70%. Similar to the case shown in FIG. 9 described above, such a seal member 13 is substantially X-shaped in cross section in the mounted state sandwiched between the inner link plate 16 and the outer link plate 18. Then, a lubricant such as grease or oil is sealed in the bearing space between the pin 12 and the bush 17. The seal member 13 is compressed by a predetermined amount between the outer link plate 18 and the inner link plate 16 in a mounted state, but the rubber that is a material of the seal member 13 is made of a relatively hard material. ing.
このような本実施形態の場合も、前述の図9で説明した場合と同様に、シール部材13の配置を次のように行う。まず、前記第1のリップ部13aを、前記ブシュ突出部17a先端と前記アウターリンクプレート18との間に配置した状態で、アウターリンクプレート18をインナーリンクプレート16に接近する方向に移動する。すると、前記シール部材13が、前記ブシュ突出部17aとの接触に基づく回転モーメントにより捩られ、断面略々X字状に変形して前記インナーリンクプレート16と前記アウターリンクプレート18との間に挟持される。 In the case of this embodiment as well, as in the case described with reference to FIG. 9 , the seal member 13 is arranged as follows. First, the outer link plate 18 is moved in a direction approaching the inner link plate 16 in a state where the first lip portion 13a is disposed between the distal end of the bush protrusion 17a and the outer link plate 18. Then, the seal member 13 is twisted by a rotational moment based on the contact with the bushing projecting portion 17a and deformed into a substantially X-shaped cross section, and is sandwiched between the inner link plate 16 and the outer link plate 18. Is done.
また、前記Aとシール部材13の左右方向の幅Hとの関係をA:H=0.35〜0.45:1とし、前記第1及び第2のリップ部13a、13bの突出量Lと前記Hとの関係をL:H=0.4〜0.6:1とすることにより、シール部材13の自然状態での左右方向の幅と径方向の幅との関係を適切にでき、装着状態で、各リップ部をプレート16又は18或はブシュ突出部17aに適切に当接させることができる。また、このような関係を有することにより、前記湾曲凹面13hを適切な曲率半径により形成し易くなり、応力集中の緩和を図り易くなると共に、くびれ部13fを適切に変形させ易くできる。例えば、突出量Lが小さ過ぎると、湾曲凹面13hを適切な曲率半径とするためには、くびれ部13fの幅が大きくなり過ぎて、このくびれ部13fを変形させにくくなる。 The relationship between A and the width H in the left-right direction of the seal member 13 is A: H = 0.35 to 0.45: 1, and the protrusion amount L of the first and second lip portions 13a and 13b By setting the relationship with H to L: H = 0.4 to 0.6: 1, the relationship between the width in the left-right direction and the width in the radial direction in the natural state of the seal member 13 can be appropriately set and mounted. In this state, each lip portion can be appropriately brought into contact with the plate 16 or 18 or the bush protrusion 17a. Further, by having such a relationship, the curved concave surface 13h can be easily formed with an appropriate radius of curvature, stress concentration can be easily relaxed, and the constricted portion 13f can be easily deformed appropriately. For example, when the protrusion amount L is too small, in order to the concave curved surface 13h with an appropriate radius of curvature, the width of the constricted portion 13f becomes too large, it is difficult to deform the constriction 13 f.
Claims (1)
前記シール部材は、自然状態における断面が十字形状からなり、中央基部と、該中央基部から内径方向に延びる第1のリップ部と、前記中央基部から外径方向に延びる第2のリップ部と、前記中央基部から左右方向に延びる第3及び第4のリップ部とを有し、
前記第1のリップ部を、前記ブシュの突出部先端と前記アウターリンクプレートとの間に配置した状態で、アウターリンクプレートをインナーリンクプレートに接近する方向に移動して、前記シール部材が、前記ブシュの突出部との接触に基づく回転モーメントにより捩られ、断面略々X字状に変形して前記インナーリンクプレートと前記アウターリンクプレートとの間に挟持されてなる、シールチェーンにおいて、
自然状態において、前記第1のリップ部は、アール面又はそれに近い曲面により形成される断面円形又はそれに近い形状からなり、
前記第1及び第2のリップ部は、それぞれ、径方向中間部の幅が前記第3及び第4のリップ部の幅よりも大きく、前記径方向基端部に、前記径方向中間部よりも幅が狭く、前記第1及び第2のリップ部の左右方向両側面と前記第3及び第4のリップ部の径方向両端面とをそれぞれ湾曲凹面により連続させるくびれ部を有する、
ことを特徴とするシールチェーン。 A bush-shaped seal member is arranged so as to partially protrude the bush from the inner link plate, and to be sandwiched between the inner link plate and the outer link plate so as to surround the protruding portion.
The seal member has a cross-section in a natural state having a cross shape, a central base, a first lip extending from the central base in the inner diameter direction, and a second lip extending from the central base in the outer diameter direction, A third lip portion and a fourth lip portion extending in the left-right direction from the central base portion;
In a state where the first lip portion is disposed between the projecting end of the bush and the outer link plate, the outer link plate is moved in a direction approaching the inner link plate, and the seal member is twisted by the rotational moment based on the contact between the protruding portion of the bush, formed by sandwiching deformed into a substantially s X-shape between said inner link plate and the outer link plates, the seal chain,
In a natural state, the first lip portion has a round cross section formed by a round surface or a curved surface close thereto or a shape close thereto,
Each of the first and second lip portions has a radial intermediate width greater than that of the third and fourth lip portions, and the radial proximal end portion has a width larger than that of the radial intermediate portion. A narrow portion that has a constricted portion that allows both side surfaces in the left-right direction of the first and second lip portions and both radial end surfaces of the third and fourth lip portions to be continuous by curved concave surfaces,
A seal chain characterized by that.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010024437A JP5415316B2 (en) | 2010-02-05 | 2010-02-05 | Seal chain |
ITUD2011A000010A IT1403830B1 (en) | 2010-02-05 | 2011-01-27 | "SEALED CHAIN" |
CZ20110054A CZ201154A3 (en) | 2010-02-05 | 2011-01-31 | Sealed chain |
CN201110035439.4A CN102146984B (en) | 2010-02-05 | 2011-01-31 | Sealing chain |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010024437A JP5415316B2 (en) | 2010-02-05 | 2010-02-05 | Seal chain |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2011163388A JP2011163388A (en) | 2011-08-25 |
JP2011163388A5 true JP2011163388A5 (en) | 2013-02-28 |
JP5415316B2 JP5415316B2 (en) | 2014-02-12 |
Family
ID=43975679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010024437A Active JP5415316B2 (en) | 2010-02-05 | 2010-02-05 | Seal chain |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP5415316B2 (en) |
CN (1) | CN102146984B (en) |
CZ (1) | CZ201154A3 (en) |
IT (1) | IT1403830B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5849837B2 (en) * | 2012-04-11 | 2016-02-03 | Nok株式会社 | Seal ring |
KR102203341B1 (en) * | 2013-05-17 | 2021-01-15 | 미츠비시 덴센 고교 가부시키가이샤 | Seal for reciprocating motion |
JP7308626B2 (en) * | 2019-03-08 | 2023-07-14 | 大同工業株式会社 | seal chain |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6141963U (en) * | 1984-08-23 | 1986-03-18 | エヌオーケー株式会社 | multi-directional seal |
JPH0648038B2 (en) * | 1987-07-22 | 1994-06-22 | 大同工業株式会社 | Seal chain manufacturing method |
CN2259868Y (en) * | 1995-07-31 | 1997-08-20 | 江汉石油管理局钻头厂 | Teethed wheel type tooth drill bit |
US5943855A (en) * | 1998-06-10 | 1999-08-31 | Tsubakimoto Chain Co. | Lubricant retaining chain |
JP4756537B2 (en) * | 2005-06-17 | 2011-08-24 | 大同工業株式会社 | Seal chain and manufacturing method thereof |
-
2010
- 2010-02-05 JP JP2010024437A patent/JP5415316B2/en active Active
-
2011
- 2011-01-27 IT ITUD2011A000010A patent/IT1403830B1/en active
- 2011-01-31 CZ CZ20110054A patent/CZ201154A3/en unknown
- 2011-01-31 CN CN201110035439.4A patent/CN102146984B/en active Active
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