JPH0463269B2 - - Google Patents
Info
- Publication number
- JPH0463269B2 JPH0463269B2 JP59278843A JP27884384A JPH0463269B2 JP H0463269 B2 JPH0463269 B2 JP H0463269B2 JP 59278843 A JP59278843 A JP 59278843A JP 27884384 A JP27884384 A JP 27884384A JP H0463269 B2 JPH0463269 B2 JP H0463269B2
- Authority
- JP
- Japan
- Prior art keywords
- grease
- annular
- groove
- grease groove
- main
- 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.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、空気圧シリンダ装置あるいは油圧シ
リンダ装置のように、摺動部材が軸方向に往復運
動する往復動用アクチユエータに用いられる摺動
用パツキン、特に長ストローク用の無給油摺動パ
ツキンに関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a sliding packing used in a reciprocating actuator in which a sliding member reciprocates in the axial direction, such as a pneumatic cylinder device or a hydraulic cylinder device, and particularly Related to oil-free sliding packing for long strokes.
（従来技術及びその問題点）
（従来技術及びその問題点）
従来の摺動用パツキンは、例えば第３図に示す
ように軸方向の両端部にリツプ８，９を設け、リ
ツプ８，９間に１つの環状グリース溝２１を設け
ている。ところがグリース溝２１が１つでは、長
時間使用して溝２１内のグリースが減つてきた時
に、グリース溝２１内のグリースが軸方向のいず
れかに偏り、両リツプ８，９を均等に潤滑しなく
なる。また長ストローク用の装置で長時間使用し
た場合等には、グリースの外部への流出が早く、
グリースの保持の点で問題が残る。(Prior art and its problems) (Prior art and its problems) A conventional sliding packing is provided with lips 8 and 9 at both ends in the axial direction, for example, as shown in FIG. One annular grease groove 21 is provided. However, if there is only one grease groove 21, when the grease in the groove 21 decreases after long-term use, the grease in the grease groove 21 will be biased in one direction in the axial direction, and both lips 8 and 9 will not be evenly lubricated. It disappears. In addition, when using long-stroke equipment for a long time, grease flows out quickly.
Problems remain in terms of grease retention.
（発明の目的）
本発明の目的は、パツキンの両端リツプを常に
均等に潤滑できるようにすると共に、グリースの
保持機能を向上させることである。(Objective of the Invention) The object of the present invention is to enable constant and even lubrication of both ends of the packing and to improve the grease retention function.
（目的を達成するための手段）
上記目的を達成するために本発明は、摺動部材
が軸方向に往復運動する往復動用アクチユエータ
に用いられる摺動用パツキンにおいて、環状パツ
キンの摺接面側の軸方向両端部に、摺動部材に圧
接する環状リツプを形成し、両環状リツプ間の中
央部に環状の主グリース溝を形成し、主グリース
溝の軸方向両側に主グリース溝よりも断面積の小
さな環状の副グリース溝を形成し、主グリース溝
と副グリース溝との間に環状の仕切り壁を設け、
仕切り壁の先端部の直径を、摺動部材の外径と略
等しくなるように設定している。(Means for Achieving the Object) In order to achieve the above object, the present invention provides a sliding packing used in a reciprocating actuator in which a sliding member reciprocates in the axial direction, the axis of the annular packing on the sliding surface side. An annular lip that presses against the sliding member is formed at both ends in the direction, and an annular main grease groove is formed in the center between the two annular lips, and a groove with a cross-sectional area smaller than that of the main grease groove is formed on both sides of the main grease groove in the axial direction. A small annular auxiliary grease groove is formed, and an annular partition wall is provided between the main grease groove and the auxiliary grease groove,
The diameter of the tip of the partition wall is set to be approximately equal to the outer diameter of the sliding member.
（実施例）
第１図は本発明を適用した空圧シリンダ装置の
縦断面部分図であり、この第１図において、１は
シリンダハウジング、２は摺動ロツドであつて、
ロツド２はシリンダハウジング１の内周面に摺動
用パツキン３を介してロツド長さ方向摺動自在に
嵌合している。ハウジング１内には作動空気室１
ａを備えている。ロツド２の摺動ストロークは例
えば2500mmの長ストロークであり、作動空気圧は
例えば５Kgｆ／cm2である。ハウジング１の内周面
にはシール嵌着用の環状溝４が形成されており、
環状溝４内に上記環状のパツキン３が嵌着されて
いる。(Embodiment) Fig. 1 is a partial vertical cross-sectional view of a pneumatic cylinder device to which the present invention is applied, and in Fig. 1, 1 is a cylinder housing, 2 is a sliding rod,
The rod 2 is fitted onto the inner circumferential surface of the cylinder housing 1 via a sliding packing 3 so as to be slidable in the longitudinal direction of the rod. There is a working air chamber 1 inside the housing 1.
It is equipped with a. The sliding stroke of the rod 2 is, for example, a long stroke of 2500 mm, and the operating air pressure is, for example, 5 Kgf/cm 2 . An annular groove 4 for fitting a seal is formed on the inner peripheral surface of the housing 1.
The annular packing 3 is fitted into the annular groove 4.
パツキン３は例えばニトリルゴムでできてお
り、パツキン３の外周面の前端部（圧力側）に
は、外径側の環状リツプ５が前方突出状に形成さ
れていると共に、外向きの環状突起６が形成され
ている。パツキン３の内周面の軸方向前端部には
内径側の環状主リツプ８形成され、後端部（大気
圧側）には環状副リツプ９が形成されている。内
径側の両リツプ８，９間の中央部には、環状の主
グリース溝１０が形成され、主グリース溝１０の
軸方向両側には、各リツプ８，９にそれぞれ近接
する副グリース溝１１，１２が形成されている。
主グリース溝１０と各副グリース溝１１，１２と
の間には環状の仕切り壁１３，１４が形成されて
いる。パツキン装着時の仕切り壁１３，１４の内
径寸法Ｄ１は、ロツド２の外径Ｄ２と略同じであ
り、仕切り壁１３，１４の内周端縁はロツド２の
外周面に略圧力０で当接するか、あるいは近接す
るのが好ましい。内径側の前後のリツプ８，９の
内径寸法Ｄ３は、ロツド２の外径Ｄ２よりも小さ
くなつており、パツキン装着時にはリツプ８，９
は圧縮され、所定のシール圧力でロツド２の表面
に圧接する。 The packing 3 is made of, for example, nitrile rubber, and an annular lip 5 on the outer diameter side is formed on the front end (pressure side) of the outer circumferential surface of the packing 3 so as to protrude forward, and an annular projection 6 facing outward is formed on the front end (pressure side) of the packing 3. is formed. An annular main lip 8 on the inner diameter side is formed at the front end in the axial direction of the inner peripheral surface of the packing 3, and an annular sub-lip 9 is formed at the rear end (atmospheric pressure side). An annular main grease groove 10 is formed in the center between both lips 8 and 9 on the inner diameter side, and on both sides of the main grease groove 10 in the axial direction, there are sub-grease grooves 11 and 11, respectively, which are close to each lip 8 and 9. 12 are formed.
Annular partition walls 13 and 14 are formed between the main grease groove 10 and each of the sub-grease grooves 11 and 12. The inner diameter dimension D1 of the partition walls 13, 14 when the packing is installed is approximately the same as the outer diameter D2 of the rod 2, and the inner peripheral edges of the partition walls 13, 14 contact the outer peripheral surface of the rod 2 with approximately zero pressure. or preferably close to each other. The inner diameter dimension D3 of the front and rear lips 8, 9 on the inner diameter side is smaller than the outer diameter D2 of the rod 2.
is compressed and pressed against the surface of the rod 2 with a predetermined sealing pressure.
主グリース溝１０及び副グリース溝１１，１２
にはグリースが注入されている。なお第１図では
パツキン３の形状を自然状態（非圧縮状態）で示
している。 Main grease groove 10 and sub-grease grooves 11, 12
is injected with grease. Note that FIG. 1 shows the shape of the packing 3 in its natural state (uncompressed state).
（作用）
ロツド２が軸方向に摺動する場合において、前
部の主リツプ８にはそれに近接した前部のグリー
ス溝１１からグリースが供給され、後部の副リツ
プ９にはそれに近接した後部のグリース溝１２か
らグリースが供給される。また両副のグリース溝
１１，１２にはそれらより断面積の大きな主グリ
ース溝１０から徐々にグリースが供給される。従
つてグリースが前後の一方に偏ることはなく、両
リツプ８，９は均等かつ良好に潤滑される。(Function) When the rod 2 slides in the axial direction, the main lip 8 at the front is supplied with grease from the grease groove 11 at the front adjacent to it, and the sub lip 9 at the rear is supplied with grease from the grease groove 11 at the rear adjacent to it. Grease is supplied from the grease groove 12. Further, grease is gradually supplied to both the subsidiary grease grooves 11 and 12 from the main grease groove 10 having a larger cross-sectional area. Therefore, the grease is not biased to either the front or the rear, and both lips 8, 9 are lubricated evenly and well.
中央の主グリース溝１０からそれぞれ副グリー
ス溝１１，１２を介して前後のリツプ８，９にグ
リースを供給するので、外部へのグリースの流出
量を少なく抑えることができ、グリースの保持性
能が良い。 Grease is supplied from the main grease groove 10 in the center to the front and rear lips 8 and 9 via the sub-grease grooves 11 and 12, respectively, so the amount of grease flowing out to the outside can be suppressed to a small amount and the grease retention performance is good. .
（別の実施例）
(1) 第２図に示す実施例は、後部の副リツプ９を
後方突出状に形成してダストの侵入防止も兼ね
た例である。(Another Embodiment) (1) The embodiment shown in FIG. 2 is an example in which the rear sub-lip 9 is formed in a rearwardly projecting shape to also prevent dust from entering.
(2) 第１図、第２図の実施例はハウジング内周面
に嵌着するパツキンに適用しているが、本発明
はピストン等の外周面の嵌着溝に装着するよう
なパツキンにも適用できる。その場合には主グ
リース溝及び副グリース溝並びに主リツプ及び
副リツプは、パツキンの外周面に形成される。(2) Although the embodiments shown in FIGS. 1 and 2 are applied to a gasket that fits on the inner peripheral surface of a housing, the present invention can also be applied to a gasket that is installed in a fitting groove on the outer peripheral surface of a piston, etc. Applicable. In that case, the main grease groove and the sub-grease groove as well as the main lip and the sub-lip are formed on the outer peripheral surface of the packing.
(3) 図示のような空気圧シリンダ装置の他に、例
えば油圧シリンダ装置のような各種往復動用ア
クチユエータに適用できる。(3) In addition to the illustrated pneumatic cylinder device, the present invention can be applied to various reciprocating actuators such as hydraulic cylinder devices.
（発明の効果）
(1) 摺動部材が軸方向に往復運動する往復動用ア
クチユエータに用いられる摺動用パツキンにお
いて、軸方向両端部の環状リツプ８，９にそれ
ぞれ近接させて、副グリース溝１１，１２を形
成し、両副グリース溝１１，１２間に断面積の
大きな主グリース溝１０を形成し、主グリース
溝１０と副グリース溝１１，１２の間に仕切り
壁１３，１４を設けているので、長時間使用し
てグリースが減つてきても、グリースが前後の
いずれかに偏ることはなく、両リツプ８，９を
常に均等にかつ良好に潤滑することができる。(Effects of the Invention) (1) In a sliding packing used in a reciprocating actuator in which a sliding member reciprocates in the axial direction, the auxiliary grease grooves 11, 12, a main grease groove 10 with a large cross-sectional area is formed between both sub-grease grooves 11, 12, and partition walls 13, 14 are provided between the main grease groove 10 and sub-grease grooves 11, 12. Even if the grease decreases after long-term use, the grease will not be biased toward either the front or rear, and both lips 8 and 9 can always be evenly and well lubricated.
従つて良好なシール性能と潤滑性能とを同時
に確保できる。 Therefore, good sealing performance and good lubrication performance can be ensured at the same time.
(2) 主グリース溝１０の軸方向両側に主グリース
溝よりも断面積の小さな環状の副グリース溝１
１，１２を形成し、主グリース溝１０と副グリ
ース溝１１，１２との間の仕切り壁１３，１４
の先端部直径を、パツキン装着時に摺動部材に
略圧力０で接触あるいは近接するように設定し
ているので、主グリース溝１０から各副グリー
ス溝１１，１２を介して２段式に各リツプ８，
９にグリースが供給され、外部へのグリースの
無駄な流出を防ぐことができ、グリースの保存
が良い。(2) Annular sub-grease grooves 1 with a smaller cross-sectional area than the main grease groove on both sides of the main grease groove 10 in the axial direction
1 and 12, and partition walls 13 and 14 between the main grease groove 10 and the sub-grease grooves 11 and 12.
The diameter of the tip of the lip is set so that it contacts or approaches the sliding member with almost zero pressure when the packing is installed, so each lip is connected in two stages from the main grease groove 10 through the sub-grease grooves 11 and 12. 8,
Grease is supplied to 9, which prevents unnecessary leakage of grease to the outside and allows for good grease preservation.
従つてパツキンの寿命が長くなる。ちなみに
本発明の実験例として、空気圧を５Kgｆ／cm2、
ストローク長さを2500mm、速度を1.5ｍ／ｓに
設定した場合では、5000Km走行以上の寿命を保
持していることが確認されている。 Therefore, the life of the packing is extended. By the way, as an experimental example of the present invention, the air pressure was 5Kgf/cm 2 ,
It has been confirmed that when the stroke length is set to 2500mm and the speed is set to 1.5m/s, the lifespan is maintained for more than 5000km.
第１図は本発明を適用したパツキンの縦断面部
分図、第２図はパツキンの変形例の縦断面部分
図、第３図は従来例の縦断面部分図である。
２……ロツド（摺動部材の１例）、３……パツ
キン、８，９……リツプ、１０……主グリース
溝、１１，１２……副グリース溝、１３，１４…
…仕切り壁。
FIG. 1 is a partial vertical cross-sectional view of a gasket to which the present invention is applied, FIG. 2 is a partial vertical cross-sectional view of a modified example of the gasket, and FIG. 3 is a partial vertical cross-sectional view of a conventional example. 2... Rod (an example of a sliding member), 3... Packing, 8, 9... Lip, 10... Main grease groove, 11, 12... Sub-grease groove, 13, 14...
...partition wall.
Claims (1)
クチユエータに用いられる摺動用パツキンにおい
て、環状パツキンの摺接面側の軸方向両端部に、
摺動部材に圧接する環状リツプを形成し、両環状
リツプ間の中央部に環状の主グリース溝を形成
し、主グリース溝の軸方向両側に主グリース溝よ
りも断面積の小さな環状の副グリース溝を形成
し、主グリース溝と副グリース溝との間に環状の
仕切り壁を設け、仕切り壁の先端部の直径を、摺
動部材の外径と略等しくなるように設定したこと
を特徴とする摺動用パツキン。1. In a sliding packing used in a reciprocating actuator in which a sliding member reciprocates in the axial direction, at both axial ends of the annular packing on the sliding surface side,
An annular lip is formed in pressure contact with the sliding member, an annular main grease groove is formed in the center between both annular lips, and an annular auxiliary grease groove with a smaller cross-sectional area than the main grease groove is formed on both sides of the main grease groove in the axial direction. A groove is formed, an annular partition wall is provided between the main grease groove and the sub-grease groove, and the diameter of the tip of the partition wall is set to be approximately equal to the outer diameter of the sliding member. Sliding gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59278843A JPS61157877A (en) | 1984-12-28 | 1984-12-28 | Packing for sliding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59278843A JPS61157877A (en) | 1984-12-28 | 1984-12-28 | Packing for sliding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61157877A JPS61157877A (en) | 1986-07-17 |
| JPH0463269B2 true JPH0463269B2 (en) | 1992-10-09 |
Family
ID=17602922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59278843A Granted JPS61157877A (en) | 1984-12-28 | 1984-12-28 | Packing for sliding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61157877A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103933B2 (en) * | 1986-08-05 | 1995-11-08 | 三菱電線工業株式会社 | Sliding packing |
| US5269537A (en) * | 1992-10-13 | 1993-12-14 | Caterpillar Inc. | Composite radial seal |
| DE4324529C1 (en) * | 1993-07-21 | 1994-11-17 | Bruss Dichtungstechnik | Shaft sealing ring |
| DE19532701C2 (en) * | 1995-09-05 | 2000-01-05 | Freudenberg Carl Fa | Lip seal |
| JP2013185702A (en) * | 2012-03-12 | 2013-09-19 | Kawasaki Heavy Ind Ltd | Sliding seal and combined sliding seal |
| JP6219578B2 (en) * | 2013-03-18 | 2017-10-25 | 六菱ゴム株式会社 | Sliding seal and seal structure including the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340161U (en) * | 1976-09-10 | 1978-04-07 |
-
1984
- 1984-12-28 JP JP59278843A patent/JPS61157877A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61157877A (en) | 1986-07-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |