JP4744935B2 - Equipment for mounting gaskets for pneumatic actuators - Google Patents

Equipment for mounting gaskets for pneumatic actuators Download PDF

Info

Publication number
JP4744935B2
JP4744935B2 JP2005157512A JP2005157512A JP4744935B2 JP 4744935 B2 JP4744935 B2 JP 4744935B2 JP 2005157512 A JP2005157512 A JP 2005157512A JP 2005157512 A JP2005157512 A JP 2005157512A JP 4744935 B2 JP4744935 B2 JP 4744935B2
Authority
JP
Japan
Prior art keywords
gasket
groove
protrusion
mounting groove
mounting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2005157512A
Other languages
Japanese (ja)
Other versions
JP2006329400A (en
JP2006329400A5 (en
Inventor
亮平 古田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kitz Corp
Original Assignee
Kitz Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kitz Corp filed Critical Kitz Corp
Priority to JP2005157512A priority Critical patent/JP4744935B2/en
Publication of JP2006329400A publication Critical patent/JP2006329400A/en
Publication of JP2006329400A5 publication Critical patent/JP2006329400A5/ja
Application granted granted Critical
Publication of JP4744935B2 publication Critical patent/JP4744935B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Gasket Seals (AREA)

Description

本発明は、ガスケット装着用機器に関し、特に、優れた組立作業性と密閉性能を実現した空圧アクチュエータのガスケット装着用機器に関する。 The present invention relates to a gasket mounting device, and more particularly to a gasket mounting device for a pneumatic actuator that realizes excellent assembly workability and sealing performance.

従来より、空圧式・油圧式アクチュエータ等の圧力機器に用いられる密封シールや、水・粉塵などの浸入を防止するダストシールには、例えば、蓋体との合わせ面をゴムや樹脂などの弾性材料で密閉シールする必要があり、容器本体側或は蓋体側の合わせ面の周縁に凹状の溝を設けて、この溝内にゴム製や樹脂製のガスケットを装着した後、ネジなどの締付部材を介して蓋体を締付固定している。   Conventionally, for sealing seals used in pressure devices such as pneumatic and hydraulic actuators, and dust seals that prevent water and dust from entering, for example, the mating surface with the lid is made of an elastic material such as rubber or resin. It is necessary to hermetically seal, and a concave groove is provided on the periphery of the mating surface on the container body side or the lid body side, and after installing a rubber or resin gasket in this groove, a tightening member such as a screw is attached. The lid is fastened and fixed via

ゴム製ガスケットを装着する溝の場合には、ゴム製ガスケットの潰しによって、ガスケットが溝内に充満しないように余裕を持った設計がなされている。そのため、ガスケットを溝に入れた状態では、ガスケットは溝内に保持されることはなく、カバーを傾けたり逆さまにすれば、当然ガスケットは脱落してしまい、紛失するおそれもある。   In the case of a groove in which a rubber gasket is mounted, a design is provided with a margin so that the gasket is not filled into the groove by crushing the rubber gasket. Therefore, in a state where the gasket is put in the groove, the gasket is not held in the groove, and if the cover is tilted or turned upside down, the gasket may naturally fall off and be lost.

このようなガスケットの脱落を防止する手段として、組立時にグリスなどを塗布してガスケットを接着する方法がある。ガスケットを接着剤などで完全に接着してしまうと、ガスケットの交換や分別廃棄ができなくなることから、グリス程度の粘性のあるもので接着するのが一般的となっている。しかし、グリスの塗布作業は極めて面倒なものであり、作業性の低下や製造コストがかかるなどの問題がある。その他、ガスケットの脱落防止を図る一例として、以下の技術が開示されている。   As a means for preventing such a gasket from dropping off, there is a method of applying a grease or the like at the time of assembly and bonding the gasket. If the gasket is completely bonded with an adhesive or the like, the gasket cannot be replaced or disposed of separately. Therefore, it is common to bond the gasket with a material having a viscosity of about grease. However, the grease application operation is extremely troublesome, and there are problems such as reduced workability and increased manufacturing costs. In addition, the following technique is disclosed as an example for preventing the gasket from falling off.

例えば、実開平７−３５８５７号公報（特許文献１）には、バルブと基台とに開設した複数個のポートを個別に連通させる複数個の開口を有し、バルブと基台との間をシールするバルブ用ガスケットが開示されている。バルブと基台との間にガスケットを介在させて、これらを締付部材により締付けると、両シール面に設けた内外のリブが圧縮されて、これらのリブ間の閉塞空間の圧力が大気圧より僅かに低下し、ガスケットとバルブ及び基台とのシール面間に吸着力を発生させることで、バルブと基台とを分離しても、ガスケットがバルブ又は基台の何れか一方に吸着して離脱しない旨が記載されている。   For example, Japanese Utility Model Laid-Open No. 7-35857 (Patent Document 1) has a plurality of openings for individually communicating a plurality of ports established in a valve and a base, and the space between the valve and the base is A sealing valve gasket is disclosed. When a gasket is interposed between the valve and the base and these are tightened by a tightening member, the inner and outer ribs provided on both seal surfaces are compressed, and the pressure in the closed space between these ribs is more than atmospheric pressure. Even if the valve and the base are separated by generating an adsorption force between the sealing surfaces of the gasket and the valve and the base, the gasket is adsorbed to either the valve or the base. It states that it will not leave.

特開平６−２３５４６９号公報（特許文献２）には、断面四角状のガスケット本体の両側面から突起体を突出させ、この突起体をガスケット挿着溝の側壁面に当接させる旨が記載されている。
実開平７−３５８５７号公報 特開平６−２３５４６９号公報 Japanese Patent Application Laid-Open No. 6-235469 (Patent Document 2) describes that a protrusion is protruded from both side surfaces of a gasket body having a square cross section, and this protrusion is brought into contact with the side wall surface of the gasket insertion groove. ing.
Japanese Utility Model Publication No. 7-35857 JP-A-6-235469

ところが、特許文献１に記載のガスケットでは、ガスケット本体の内外両側面にリブを突設した構造であることから、このガスケットを空圧式・油圧式アクチュエータ等の圧力機器に適用すれば、例えば、内圧封止の場合、内圧によって外側面に設けたリブが潰され、ガスケットには局所的に大きな荷重がかかることになり、しかも、空圧式・油圧式アクチュエータ等の圧力機器に必要な高い密閉性能は確保されない。   However, since the gasket described in Patent Document 1 has a structure in which ribs are provided on both the inner and outer side surfaces of the gasket body, if this gasket is applied to a pressure device such as a pneumatic or hydraulic actuator, for example, an internal pressure In the case of sealing, the rib provided on the outer surface is crushed by the internal pressure, and a large load is locally applied to the gasket. In addition, the high sealing performance required for pressure devices such as pneumatic and hydraulic actuators is high. Not secured.

また、特許文献２に記載のガスケットは、弁室内の気密性を保持すべく、突起体をガスケット挿着溝の側壁面にシールさせるものであって、この突起体はガスケットを溝内に保持させるように機能するものではない。   In addition, the gasket described in Patent Document 2 seals the protrusion on the side wall surface of the gasket insertion groove in order to maintain airtightness in the valve chamber, and this protrusion holds the gasket in the groove. Does not work.

本発明は、上記の課題点に鑑み、鋭意研究の結果開発に至ったものであり、その目的とするところは、ガスケットの不用意な脱落を防いで優れた組立作業性を実現すると共に、シール面に優れた密閉性能を具備した空圧アクチュエータのガスケット装着用機器を提供することにある。 The present invention has been developed as a result of diligent research in view of the above-mentioned problems, and its purpose is to prevent inadvertent removal of the gasket and to realize excellent assembly workability, and to seal An object of the present invention is to provide a device for mounting a gasket of a pneumatic actuator having excellent sealing performance on the surface.

上記の目的を達成するため、請求項１に係る発明は、ピストンを収容したハウジングの開口端を被蓋する蓋体の合わせ面に対向する一対の円弧状部と、この円弧状部の両端部に矩辺の張り出し部を連設して凹状の環状ガスケット溝を形成し、この張り出し部の内側に前記ハウジング内に給排気する給排気路を位置させると共に、樹脂製又はゴム製の弾性材から成る環状のガスケットを前記ガスケット溝に対応する一対の円弧状部の両端部に矩辺の張り出し部を有する環形状に形成し、このガスケットには、前記ガスケット装着溝の溝幅より小さい幅寸法に形成されたガスケットの円弧状部の内周面に肉厚方向へ延び、かつ、圧潰量を１０〜１５％に設定した突起部を等間隔に複数形成し、このガスケットを前記ガスケット溝に対応した状態で組み込んだときに、前記突起部が溝壁面に当接してガスケットをガスケット装着溝内に保持するようにした空圧アクチュエータのガスケット装着用機器である。 In order to achieve the above object, the invention according to claim 1 includes a pair of arc-shaped portions facing the mating surface of the lid that covers the open end of the housing containing the piston, and both end portions of the arc-shaped portion. In addition, a rectangular annular groove is formed by connecting a rectangular protruding portion to the inside of the protruding portion, and an air supply / exhaust passage for supplying / exhausting air into the housing is located inside the protruding portion, and a resin or rubber elastic material is used. An annular gasket is formed in an annular shape having rectangular protrusions at both ends of a pair of arc-shaped portions corresponding to the gasket groove, and the gasket has a width dimension smaller than the groove width of the gasket mounting groove. A plurality of protrusions extending in the thickness direction on the inner peripheral surface of the arc-shaped portion of the formed gasket and having a crushing amount set to 10 to 15% are formed at equal intervals, and this gasket corresponds to the gasket groove. In state When crowded seen, the protrusion is a pneumatic actuator gasket installation equipment of which is adapted to hold the gasket in contact with the groove wall surface gasket installation groove.

請求項１に係る発明によると、突起部の弾発力とその反力でガスケットをガスケット装着溝内に保持させることができ、装着されたガスケットが不用意に脱落することはない。しかも、ガスケット装着溝へ組み込む際の抵抗が小さく、突起部を押し潰すだけでガスケットを装着・保持しうるので、従来に比して、組立作業性を飛躍的に向上させた。更に、メンテナンス等でシール面を開口する場合にあっても、ガスケットが脱落することはなく、メンテナンス後、シール面には優れた密閉性能が再現される。   According to the first aspect of the present invention, the gasket can be held in the gasket mounting groove by the elastic force of the protrusion and the reaction force thereof, and the mounted gasket does not fall off carelessly. In addition, since the resistance when assembled into the gasket mounting groove is small and the gasket can be mounted and held by simply crushing the protrusion, the assembly workability is greatly improved compared to the conventional case. Furthermore, even when the sealing surface is opened for maintenance or the like, the gasket does not fall off, and excellent sealing performance is reproduced on the sealing surface after maintenance.

突起部の弾発力とその反力を内周方向に対して等間隔に発生させることができ、更に安定した脱落防止効果が得られる。請求項３に係る発明によれば、突起部とガスケット装着溝との接触面積を小さくして、ガスケット装着溝へ組み込む際の抵抗を小さくすると共に、ガスケット自体の磨耗・劣化を防ぐという効果を奏する。 Collision resilient force of the electromotive section and equally spaced can be generated that the inner peripheral direction reaction force is obtained more stable drop-off prevention effect. According to the third aspect of the present invention, the contact area between the protrusion and the gasket mounting groove is reduced, so that the resistance when assembled into the gasket mounting groove is reduced and the gasket itself is prevented from being worn or deteriorated. .

本発明を適用した合わせ面（シール面）には優れた密閉性能が備わり、例えば、空圧式・油圧式アクチュエータ等の圧力機器にあっては、突起部を受圧側であるガスケット本体の内側面のみに形成すれば、受圧時にガスケット本体の外側面の全面をガスケット装着溝の溝壁面に密着させることができ、しかも、ガスケットの局部変形の生じ難い構造が実現され、空圧式アクチュエータの圧力機器としての機能を長期に亘って、如何なく発揮させることが可能となる。 The mating surface (seal surface) to which the present invention is applied has an excellent sealing performance. For example, in a pressure device such as a pneumatic or hydraulic actuator, only the inner surface of the gasket main body on the pressure receiving side is the protrusion. When the pressure is received, the entire outer surface of the gasket body can be brought into close contact with the groove wall surface of the gasket mounting groove, and a structure that does not easily cause local deformation of the gasket is realized. As a pressure device for a pneumatic actuator , It becomes possible to make the function appear for a long time.

本発明における空圧アクチュエータのガスケット装着用機器の実施形態を図面に基づいて詳述する。図１は、本発明において、ガスケットの装着前の状態を示した斜視図であり、図２は、ガスケットを装着した状態を示した平面図である。図中１は蓋体に形成されたシール面（合わせ面）であり、２はシール面１に設けた凹状のガスケット装着溝であり、３は樹脂製又はゴム製等の弾性材料から成る環状のガスケット、また、４はガスケット装着用機器である。 An embodiment of a device for mounting a gasket of a pneumatic actuator according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a state before the gasket is attached in the present invention, and FIG. 2 is a plan view showing a state where the gasket is attached. In the figure, 1 is a sealing surface (mating surface) formed on the lid, 2 is a concave gasket mounting groove provided on the sealing surface 1, and 3 is an annular ring made of an elastic material such as resin or rubber. A gasket and 4 are gasket mounting devices.

本発明は、シール面１に設けたガスケット装着溝２内に弾性を有する環状ガスケット３を装着したガスケット装着用機器４である。前記ガスケット装着溝２の溝幅よりも小さい幅寸法で、且つ、溝深さよりも大きい肉厚寸法に形成されたガスケット本体３の内周面３ａ及び外周面３ｂの双方若しくは何れか一方の面に肉厚方向（軸芯方向）へ延びる突起部５を有し、当該ガスケット３を前記ガスケット装着溝２内に組み込んだときに、前記突起部５が溝壁面２ａと当接し、ガスケット装着溝２内に保持されることを特徴としている。なお、本実施形態では、アクチュエータ等の圧力機器に適用し、この場合、前記ガスケット３は、アクチュエータの環状シリンダをシールする円弧状部３ｃと、該円弧状部３ｃから張り出し、アクチュエータの給排気路をシールする張り出し部３ｄとから構成するが、勿論、これに限定されるものではない。 The present invention is a gasket mounting device 4 in which an annular gasket 3 having elasticity is mounted in a gasket mounting groove 2 provided on a seal surface 1. On the inner peripheral surface 3a and / or the outer peripheral surface 3b of the gasket main body 3 having a width dimension smaller than the groove width of the gasket mounting groove 2 and a thickness dimension larger than the groove depth. A protrusion 5 extending in the thickness direction (axial direction) is provided, and when the gasket 3 is incorporated in the gasket mounting groove 2, the protrusion 5 abuts against the groove wall surface 2a, and the gasket mounting groove 2 It is characterized by being held in In this embodiment, the present invention is applied to a pressure device such as an actuator. In this case, the gasket 3 has an arcuate portion 3c for sealing an annular cylinder of the actuator, and projects from the arcuate portion 3c to supply and exhaust the actuator. However, the present invention is not limited to this.

図１及び図２に示すように、空圧式アクチュエータの圧力機器（例えば、内圧封止）に適用する場合には、前記突起部５をガスケット本体３の受圧側となる内側面３ａにのみ形成し、受圧時にガスケット本体３の外側面３ｂの全面をガスケット装着溝２の外側溝壁面２ａに密着させるように構成しており、これにより、シール面１には優れた密閉性能が発揮されると共に、ガスケット３の局部変形の生じ難い構造を実現している。 As shown in FIGS. 1 and 2, when applied to a pressure device (for example, internal pressure sealing) of a pneumatic actuator , the protrusion 5 is formed only on the inner side surface 3 a on the pressure receiving side of the gasket body 3. The outer surface 3b of the gasket body 3 is configured to be in close contact with the outer groove wall surface 2a of the gasket mounting groove 2 at the time of pressure reception, thereby exhibiting excellent sealing performance on the seal surface 1, A structure in which local deformation of the gasket 3 hardly occurs is realized.

詳述すると、内圧によってガスケット３がガスケット装着溝２の外側溝壁面２ａに押し付けられるが、ガスケット本体３の外側面３ｂには前記突起部５がないので、ガスケット３に対する荷重は一定となる。一方、外側面３ｂに突起部５を形成すれば、内圧によって突起部５が過剰に潰されて局所的に荷重が大きくなる。従って、空圧式・油圧式アクチュエータ等の圧力機器に適用する場合には、本例で示すように、流体圧力によってガスケット３が押圧される側に突起部５を形成しないのがよい。   More specifically, the gasket 3 is pressed against the outer groove wall surface 2a of the gasket mounting groove 2 by the internal pressure. However, since the outer surface 3b of the gasket body 3 does not have the protrusion 5, the load on the gasket 3 is constant. On the other hand, if the protrusion 5 is formed on the outer surface 3b, the protrusion 5 is excessively crushed by the internal pressure, and the load is locally increased. Therefore, when applied to pressure devices such as pneumatic and hydraulic actuators, as shown in this example, it is preferable not to form the protrusion 5 on the side where the gasket 3 is pressed by the fluid pressure.

図３は、本発明に係るガスケット装着用機器の作用説明図である。同図（ａ）に示すように、前記ガスケット本体３の肉厚方向（軸芯方向）に向けて突起部５を形成したことで、同図（ｂ）に示すような、成形勾配を有するガスケット装着溝２であっても、肉厚方向に延びる突起部５の何れかの部位でガスケット装着溝２の溝壁面２ａと当接し、突起部５の弾発力とその反力で、ガスケット３をガスケット装着溝２内に保持させることができる。しかも、本例に示すように、突起部５をガスケット本体３の内周方向に対して、等間隔に複数（本例では６個）設けることで、安定した脱落防止効果を得る。ここで、ガスケット装着溝２の成形勾配とは、ガスケット装着溝２をダイキャスト鋳造や樹脂射出により成形する際の、型の抜き勾配のことをいい、ガスケット装着溝が垂直方向に対して、やや開口部側に傾いた角度をいう。   FIG. 3 is an operation explanatory view of the gasket mounting device according to the present invention. As shown in FIG. 6A, the protrusion 5 is formed in the thickness direction (axial direction) of the gasket body 3, so that the gasket having a forming gradient as shown in FIG. Even in the mounting groove 2, the gasket 3 is brought into contact with the groove wall surface 2 a of the gasket mounting groove 2 at any part of the projecting portion 5 extending in the thickness direction, and the elastic force and reaction force of the projecting portion 5 It can be held in the gasket mounting groove 2. In addition, as shown in this example, a plurality of protrusions 5 (six in this example) are provided at equal intervals in the inner circumferential direction of the gasket body 3 to obtain a stable drop-off preventing effect. Here, the molding gradient of the gasket mounting groove 2 refers to a mold draft when the gasket mounting groove 2 is molded by die casting or resin injection, and the gasket mounting groove is slightly in the vertical direction. An angle inclined toward the opening.

また、突起部５の先端を断面略円弧状に形成すれば、ガスケット装着溝２の溝壁面２ａとの接触面積が小さくなり、ガスケット３をガスケット装着溝２へ組み込む際の抵抗を小さくすることができる。本例で示すガスケット３には円弧状部３ｃから張り出した張り出し部３ｄを有しているが、張り出し部３ｄよりも長辺である円弧状部３ｃを、突起部５によりガスケット装着溝２内に強固に保持しているので、短辺である張り出し部３ｄに突起部５を設ける必要なく、安定した脱落防止効果を得ることができる。   Further, if the tip of the protrusion 5 is formed in a substantially arc shape in cross section, the contact area between the gasket mounting groove 2 and the groove wall surface 2a is reduced, and the resistance when the gasket 3 is assembled into the gasket mounting groove 2 can be reduced. it can. The gasket 3 shown in this example has a protruding portion 3d protruding from the arc-shaped portion 3c. However, the arc-shaped portion 3c having a longer side than the protruding portion 3d is inserted into the gasket mounting groove 2 by the protruding portion 5. Since it holds firmly, it is not necessary to provide the projection part 5 in the overhang | projection part 3d which is a short side, and the stable drop-off prevention effect can be acquired.

ガスケット３の装着に際して、図２に示すように、前記ガスケット本体３の内側面３ａより内径方向へ突設した前記突起部５が、対向する前記ガスケット装着溝２の内側溝壁面２ａに接触して押し潰されるので、圧潰された突起部５に弾発力と反力が生じ、且つ、溝壁面２ａとの摩擦力によってガスケット装着溝２内に保持される。好ましくは、ガスケット本体３に形成される突起部５の圧潰量を１０〜１５％に設定することで、ガスケット３をガスケット装着溝２へ装着する際の抵抗がより小さくなり、装着作業が容易に行えると共に、シール面１に挟持されるガスケット３がガスケット装着溝２からはみ出すおそれがなく、シール面１には優れた密閉性能が備わる。   When the gasket 3 is mounted, as shown in FIG. 2, the protrusion 5 protruding from the inner surface 3 a of the gasket body 3 in the inner diameter direction comes into contact with the inner groove wall surface 2 a of the opposing gasket mounting groove 2. Since it is crushed, an elastic force and a reaction force are generated in the crushed protrusion 5, and it is held in the gasket mounting groove 2 by a frictional force with the groove wall surface 2a. Preferably, by setting the crushing amount of the protrusion 5 formed on the gasket body 3 to 10 to 15%, the resistance when the gasket 3 is mounted in the gasket mounting groove 2 is reduced, and the mounting work is facilitated. In addition to being able to do this, the gasket 3 held between the seal surfaces 1 is not likely to protrude from the gasket mounting groove 2, and the seal surface 1 has excellent sealing performance.

また、ガスケット３に形成する突起部５の個数は、環状のガスケット本体３の周長を考慮して決定するとよく、例えば、周長１００ｍｍ以下であれば２〜３個、周長１０１〜２００ｍｍであれば４〜６個、周長２０１〜３００ｍｍであれば８〜１２個などである。突起部５の配置については、特に平滑面に対しては均等に配置することで、安定した脱落防止効果が得られる。なお、他例として、図示しないが、ガスケット本体の一部を蛇行形状にしてこの部位を突起部とし、ガスケット装着溝の溝壁面に当接させることも可能である。   The number of the protrusions 5 formed on the gasket 3 may be determined in consideration of the circumferential length of the annular gasket body 3. For example, if the circumferential length is 100 mm or less, 2 to 3 pieces and the circumferential length is 101 to 200 mm. If there are 4 to 6 pieces, the circumference is 201 to 300 mm, and 8 to 12 pieces. About the arrangement | positioning of the projection part 5, the stable drop-off prevention effect is acquired by arrange | positioning equally especially with respect to a smooth surface. As another example, although not shown, it is also possible to make a part of the gasket main body meander and make this part a protrusion, which is brought into contact with the groove wall surface of the gasket mounting groove.

ここで、本発明に係るガスケット装着用機器についての検証を行った。検証項目は、成形容易性、溝への装着性、抜き勾配を有する溝への保持性、及びガスケット本体の受圧対応性である。供試品として、図４（ａ）に示すように、周方向へ延びる長尺状の突起部１６を形成したガスケット１７を比較例１とし、図５（ａ）に示すように、半球形状の突起部１８を形成したガスケット１９を比較例２とした。また、図３（ａ）に示すように、ガスケット本体の肉厚と略同じ長さに延びる突起部５を形成したガスケットを本発明１とした。検証結果を表１に示す。   Here, it verified about the apparatus for gasket mounting which concerns on this invention. The verification items are ease of molding, mounting property to the groove, retaining property to the groove having a draft angle, and compatibility with pressure reception of the gasket body. As a test sample, as shown in FIG. 4A, a gasket 17 having a long protrusion 16 extending in the circumferential direction is used as Comparative Example 1, and as shown in FIG. 5A, a hemispherical shape is formed. The gasket 19 in which the protrusion 18 was formed was referred to as Comparative Example 2. Moreover, as shown to Fig.3 (a), the gasket which formed the protrusion part 5 extended in the length substantially the same as the thickness of the gasket main body was set as this invention 1. FIG. The verification results are shown in Table 1.

Figure 0004744935
Figure 0004744935

比較例１：ガスケットの成形容易性については、突起位置で型を上下に割る必要があり、その評価を×とした。溝への装着性については、突起部１６が反挿入方向へ変形してしまい挿入し難く、しかも、周方向へ突起部１６の逃げる余地がなく、その評価を×とした。図４（ｂ）に示すように、抜き勾配を有する溝への保持性については、抜き勾配の角度がばらつくと、突起部１６と溝壁面２ａとの当接が不十分となる場合があり、保持性が低下するため、その評価を×とした。ガスケットの受圧対応性については、ガスケット本体１７の拡径が阻害されるため、その評価を△とした。   Comparative Example 1: For ease of molding of the gasket, it was necessary to divide the mold vertically at the protrusion position, and the evaluation was x. With respect to the mounting property to the groove, the protrusion 16 is deformed in the anti-insertion direction and is difficult to insert, and there is no room for the protrusion 16 to escape in the circumferential direction. As shown in FIG. 4 (b), with respect to the holding ability to the groove having the draft angle, if the draft angle varies, the contact between the protrusion 16 and the groove wall surface 2a may be insufficient. Since the retainability is lowered, the evaluation is x. Regarding the pressure-receiving capability of the gasket, since the diameter expansion of the gasket body 17 is hindered, the evaluation is Δ.

比較例２：ガスケットの成形容易性については、ガスケットの内径方向に型を抜く必要があるため、その評価を×とした。溝への装着性については、突起部１８が反挿入方向へ変形してしまい挿入し難いため、その評価を△とした。図５（ｂ）に示すように、抜き勾配を有する溝への保持性については、抜き勾配の角度がばらつくと、突起部１８と溝壁面２ａとの当接が不十分となる場合があり、保持性が低下するため、その評価を×とした。ガスケットの受圧対応性については、ガスケット本体１９の拡径を妨げないので、その評価を○とした。   Comparative Example 2: Regarding the ease of molding of the gasket, since it was necessary to remove the mold in the inner diameter direction of the gasket, the evaluation was x. Regarding the mounting property to the groove, since the protrusion 18 is deformed in the anti-insertion direction and is difficult to insert, the evaluation is given as Δ. As shown in FIG. 5 (b), with respect to the holding ability to the groove having a draft angle, if the draft angle varies, the contact between the protrusion 18 and the groove wall surface 2a may be insufficient. Since the retainability is lowered, the evaluation is x. With respect to the pressure-receiving capability of the gasket, since the diameter of the gasket main body 19 is not hindered, the evaluation was evaluated as “good”.

本発明１：ガスケットの成形容易性については、ガスケットの肉厚方向に打ち抜き成形可能であるため、その評価を○とした。溝への装着性については、突起部５が反挿入方向に変形し難いので挿入し易く、しかも、周方向へ突起部５が逃げる余地があるので、その評価を○とした。図３（ｂ）に示すように、抜き勾配を有する溝への保持性については、抜き勾配の角度にばらつきがあっても、軸芯方向に延びる突起部５の何れかの部位で溝２の溝壁面２ａと当接して保持されるので、その評価を○とした。ガスケットの受圧対応性については、ガスケット本体３の拡径を妨げないので、その評価を○とした。なお、本実施例においては、板状のガスケット素材を肉厚方向に打ち抜き成形することにより、ガスケット本体３と突起部５を一工程で成形しており、突起部５の高さは、ガスケット本体３の肉厚と同一となっている。   Invention 1: The ease of molding of the gasket can be stamped in the thickness direction of the gasket. With respect to the mounting property to the groove, the projection 5 is not easily deformed in the anti-insertion direction, so that it is easy to insert and there is room for the projection 5 to escape in the circumferential direction. As shown in FIG. 3 (b), with respect to the holding ability to the groove having the draft angle, even if the draft angle varies, the groove 2 can be formed at any part of the protrusion 5 extending in the axial direction. Since it was held in contact with the groove wall surface 2a, the evaluation was evaluated as ◯. Regarding the pressure-receiving ability of the gasket, since the diameter expansion of the gasket main body 3 is not hindered, the evaluation is given as ◯. In the present embodiment, the gasket main body 3 and the protrusion 5 are formed in one step by punching and molding a plate-shaped gasket material in the thickness direction. 3 is the same as the wall thickness.

次に、本発明に係るガスケット装着用機器の具体例を説明する。図６は、本発明を適用した空圧式アクチュエータの横断面図である。同図において、図中６はアクチュエータ、７はハウジング、８は蓋体、９は出力軸、１０はピニオン、１１はラック、１２はピストン、１３はＯリングである。このアクチュエータ６は、直線運動を回転運動に変換するラック・ピニオン式の運動変換機構を有しており、中央室１４と連通する給排口から空気圧を供給すると、中央室１４に空気圧が充填されて対向する一対のピストン１２，１２が両側方向へ移動し、ラック１１と噛合するピニオン１０を固定した出力軸９が反時計回りに回転する。一方、両側室１５，１５と連通する図示しない給排口から空気圧を供給すると、両側室１５，１５に空気圧が充填され、前記ピストン１２，１２が中央方向へと移動し、これに伴って出力軸９が時計回りに回転する。この出力軸９の回転によって連結された図示しないバルブ弁体の開閉が行われる。   Next, a specific example of the gasket mounting device according to the present invention will be described. FIG. 6 is a cross-sectional view of a pneumatic actuator to which the present invention is applied. In the figure, 6 is an actuator, 7 is a housing, 8 is a lid, 9 is an output shaft, 10 is a pinion, 11 is a rack, 12 is a piston, and 13 is an O-ring. The actuator 6 has a rack-and-pinion type motion converting mechanism that converts linear motion into rotational motion. When air pressure is supplied from a supply / discharge port communicating with the central chamber 14, the central chamber 14 is filled with air pressure. The pair of opposed pistons 12 and 12 move in both directions, and the output shaft 9 to which the pinion 10 meshing with the rack 11 is fixed rotates counterclockwise. On the other hand, when air pressure is supplied from a supply / exhaust port (not shown) communicating with both side chambers 15 and 15, the side chambers 15 and 15 are filled with air pressure, and the pistons 12 and 12 move toward the center, and output is accompanied accordingly. The shaft 9 rotates clockwise. The valve valve body (not shown) connected by the rotation of the output shaft 9 is opened and closed.

図１に示すように、前記アクチュエータ６の組立時には、蓋体８のシール面（合わせ面）１に設けたガスケット装着溝２内にガスケット３を装入し、図２に示すように、装着・保持させる。装着されたガスケット３とガスケット装着溝２との間には、上述のごとく、脱落防止機能が発揮され、ガスケット３を装着した蓋体８を傾けるなどしても、ガスケット３はガスケット装着溝２内に確実に保持されるので、不用意に脱落することはない。勿論、メンテナンス等で合わせ面１を開口する場合にあっても、ガスケット３が脱落することはなく、メンテナンス後、シール面１には優れた密閉性能が再現される。   As shown in FIG. 1, when the actuator 6 is assembled, the gasket 3 is inserted into the gasket mounting groove 2 provided in the sealing surface (mating surface) 1 of the lid 8, and as shown in FIG. Hold. As described above, the anti-drop-off function is exerted between the mounted gasket 3 and the gasket mounting groove 2, and the gasket 3 remains in the gasket mounting groove 2 even if the lid body 8 mounted with the gasket 3 is tilted. So that it will not fall off accidentally. Of course, even when the mating surface 1 is opened for maintenance or the like, the gasket 3 does not fall off, and excellent sealing performance is reproduced on the seal surface 1 after maintenance.

更に、突起部５をガスケット本体３の受圧側である内側面３ａのみに形成しているので、受圧時にはガスケット本体３の外側面３ｂの全面をガスケット装着溝２の外側溝壁面２ａに密着させることが可能となり、ガスケット３の局部変形の生じ難い構造が実現される。ガスケット３を装着したハウジング７と蓋体８との合わせ面１は確実に密閉シールされるので、アクチュエータ６の機能は長期に亘り、如何なく発揮される。   Furthermore, since the protrusion 5 is formed only on the inner side surface 3a on the pressure receiving side of the gasket body 3, the entire outer surface 3b of the gasket body 3 is brought into close contact with the outer groove wall surface 2a of the gasket mounting groove 2 at the time of pressure receiving. Thus, a structure in which local deformation of the gasket 3 hardly occurs is realized. Since the mating surface 1 of the housing 7 and the lid body 8 to which the gasket 3 is attached is surely hermetically sealed, the function of the actuator 6 is exerted for a long time.

蓋体８のシール面１及びガスケット装着溝２以外の表面には、耐食性向上と外観向上の観点から、ポリエステル等の樹脂塗料を用いた焼付塗装が施されているが、塗膜面の均一化や剥離防止、硬度の確保といった塗装品質向上の理由から、エポキシ系やポリアミド系樹脂を用いた電着塗装を施す場合がある。この電着塗装は、蓋体８の全体を塗装液に浸漬することから、ガスケット装着溝２にも塗装が施されることとなる。塗装面は、塗装なしの面よりも表面粗さが小さく、滑らかな面となる。   Surfaces other than the sealing surface 1 and the gasket mounting groove 2 of the lid 8 are baked with a resin paint such as polyester from the viewpoint of improving corrosion resistance and appearance. Electrodeposition coating using an epoxy or polyamide resin may be applied for reasons of improving coating quality such as prevention of peeling and securing of hardness. In this electrodeposition coating, since the entire lid body 8 is immersed in the coating liquid, the gasket mounting groove 2 is also coated. The painted surface has a smaller surface roughness than the uncoated surface and is a smooth surface.

一方、ガスケット装着溝２の内側溝壁面２ａには、アクチュエータ６の本体に形成したエアー給排気路６ａとの干渉を防ぐため、部分的な切欠き部２ｂが形成されている。このガスケット装着溝２に上記電着塗装が施され、且つ、装着溝２からの脱落を防止するためにグリスが塗布されたガスケット３を装着した場合、蓋体８をアクチュエータ６の本体に固定すると、ガスケット３には肉厚方向に押し潰される力の分力が作用すると共に、グリスによる滑り作用が加わり、ガスケット３が装着溝２の切欠き部２ｂからアクチュエータ内方に向って部分的にはみ出して、アクチュエータ６のシール性が損なわれるおそれがある。本発明に係る突起部５を有するガスケット３によれば、グリスを塗布することなく、脱落防止を図れることから、塗装等の表面処理が施された装着溝２に対して確実に固定することができ、アクチュエータ６のシール性を確保することができる。   On the other hand, a partial notch 2b is formed in the inner groove wall surface 2a of the gasket mounting groove 2 in order to prevent interference with the air supply / exhaust passage 6a formed in the body of the actuator 6. When the gasket 3 is applied with the electrodeposition coating on the gasket mounting groove 2 and the gasket 3 coated with grease to prevent the mounting groove 2 from falling off, the lid 8 is fixed to the body of the actuator 6. The gasket 3 is subjected to a force component that is crushed in the thickness direction, and is also subjected to a sliding action due to grease, so that the gasket 3 partially protrudes from the notch 2b of the mounting groove 2 toward the inside of the actuator. Thus, the sealing performance of the actuator 6 may be impaired. According to the gasket 3 having the protrusions 5 according to the present invention, it is possible to prevent dropping without applying grease, so that it can be securely fixed to the mounting groove 2 subjected to surface treatment such as painting. The sealing performance of the actuator 6 can be ensured.

本発明に係るガスケット装着用機器において、ガスケットの装着前の状態を示した斜視図である。It is the perspective view which showed the state before mounting | wearing of the gasket in the gasket mounting apparatus which concerns on this invention. 本発明に係るガスケット装着用機器において、ガスケットを装着した状態を示した平面図である。It is the top view which showed the state which mounted | wore the gasket mounting apparatus which concerns on this invention. （ａ）本発明１の断面図であり、（ｂ）抜き勾配を有する溝への装着状態を示した説明図である。(A) It is sectional drawing of this invention 1, (b) It is explanatory drawing which showed the mounting state to the groove | channel which has a draft. （ａ）比較例１の断面図であり、（ｂ）抜き勾配を有する溝への装着状態を示した説明図である。(A) It is sectional drawing of the comparative example 1, (b) It is explanatory drawing which showed the mounting state to the groove | channel which has a draft. （ａ）比較例２の断面図であり、（ｂ）抜き勾配を有する溝への装着状態を示した説明図である。(A) It is sectional drawing of the comparative example 2, (b) It is explanatory drawing which showed the mounting state to the groove | channel which has a draft. 本発明に係るガスケット取付構造を適用した空圧式アクチュエータの断面図である。It is sectional drawing of the pneumatic actuator to which the gasket attachment structure concerning this invention is applied.

１ シール面（合わせ面）
２ ガスケット装着溝
２ａ 溝壁面（内側溝壁面、外側溝壁面）
３ ガスケット（ガスケット本体）
３ａ 内側面
３ｂ 外側面
４ ガスケット装着用機器
５ 突起部
６ アクチュエータ
７ ハウジング
８ 蓋体 1 Sealing surface (mating surface)
2 Gasket mounting groove 2a Groove wall surface (inner groove wall surface, outer groove wall surface)
3 Gasket (gasket body)
3a Inner side surface 3b Outer side surface 4 Equipment for mounting gasket 5 Protrusion 6 Actuator 7 Housing 8 Lid

Claims (1)

ピストンを収容したハウジングの開口端を被蓋する蓋体の合わせ面に対向する一対の円弧状部と、この円弧状部の両端部に矩辺の張り出し部を連設して凹状の環状ガスケット溝を形成し、この張り出し部の内側に前記ハウジング内に給排気する給排気路を位置させると共に、樹脂製又はゴム製の弾性材から成る環状のガスケットを前記ガスケット溝に対応する一対の円弧状部の両端部に矩辺の張り出し部を有する環形状に形成し、このガスケットには、前記ガスケット装着溝の溝幅より小さい幅寸法に形成されたガスケットの円弧状部の内周面に肉厚方向へ延び、かつ、圧潰量を１０〜１５％に設定した突起部を等間隔に複数形成し、このガスケットを前記ガスケット溝に対応した状態で組み込んだときに、前記突起部が溝壁面に当接してガスケットをガスケット装着溝内に保持するようにしたことを特徴とする空圧アクチュエータのガスケット装着用機器。 A pair of arcuate parts facing the mating surface of the lid that covers the open end of the housing that houses the piston, and a rectangular projecting part on both ends of the arcuate part to form a concave annular gasket groove A pair of arcuate portions corresponding to the gasket grooves are formed by positioning an air supply / exhaust passage for supplying / exhausting air into the housing inside the projecting portion, and an annular gasket made of an elastic material made of resin or rubber. The gasket is formed in an annular shape having rectangular overhangs at both ends, and the gasket has a thickness direction on the inner peripheral surface of the arc-shaped portion of the gasket formed to have a width smaller than the groove width of the gasket mounting groove. When a plurality of protrusions with a crushing amount set to 10 to 15% are formed at equal intervals and the gasket is assembled in a state corresponding to the gasket groove, the protrusions abut against the groove wall surface. G Pneumatic actuator gasket mounting device, characterized in that the packet to hold the gasket installation groove.
JP2005157512A 2005-05-30 2005-05-30 Equipment for mounting gaskets for pneumatic actuators Active JP4744935B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005157512A JP4744935B2 (en) 2005-05-30 2005-05-30 Equipment for mounting gaskets for pneumatic actuators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005157512A JP4744935B2 (en) 2005-05-30 2005-05-30 Equipment for mounting gaskets for pneumatic actuators

Publications (3)

Publication Number Publication Date
JP2006329400A JP2006329400A (en) 2006-12-07
JP2006329400A5 JP2006329400A5 (en) 2008-06-19
JP4744935B2 true JP4744935B2 (en) 2011-08-10

Family

ID=37551286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005157512A Active JP4744935B2 (en) 2005-05-30 2005-05-30 Equipment for mounting gaskets for pneumatic actuators

Country Status (1)

Country Link
JP (1) JP4744935B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061326A (en) * 2013-03-20 2014-09-24 深圳市海洋王照明工程有限公司 Sealing device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5862263B2 (en) * 2011-12-13 2016-02-16 日産自動車株式会社 gasket
JP5959449B2 (en) * 2013-02-18 2016-08-02 株式会社クボタ Engine sealing device
JP6134261B2 (en) * 2013-12-25 2017-05-24 日立アプライアンス株式会社 Power terminal box and compressor equipped with the same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196060U (en) * 1984-05-31 1985-12-27 株式会社　土屋製作所 Gasket shape to prevent falling off
JP2002021635A (en) * 2000-07-04 2002-01-23 Kubota Corp Head cover for engine
US6588762B2 (en) * 2001-11-29 2003-07-08 Sauer-Danfoss Inc. Lathe cut face seal and method for sealing irregularly shaped cavity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061326A (en) * 2013-03-20 2014-09-24 深圳市海洋王照明工程有限公司 Sealing device
CN104061326B (en) * 2013-03-20 2016-12-28 深圳市海洋王照明工程有限公司 A kind of sealing device

Also Published As

Publication number Publication date
JP2006329400A (en) 2006-12-07

Similar Documents

Publication Publication Date Title
JP4910167B2 (en) Seal structure of fluid pressure equipment
JP4744935B2 (en) Equipment for mounting gaskets for pneumatic actuators
EP2012028B1 (en) Dust cover for ball joint
EP1467243A3 (en) Two-shot molded seal integrity indicator, underwater camera, and method
CA2380795A1 (en) Primary rod and piston seal
JP4553121B2 (en) Rotating damper
WO2019105556A1 (en) Seal arrangement, kit of parts and method
CN112412962B (en) Protective cover with lubricant release
CA2489066A1 (en) Gasket between opposing sealing surfaces
JP2007517738A (en) Fluid dosing device
JP2009024834A (en) Dust cover for ball joint
JP5236404B2 (en) Single lever faucet
WO2017203872A1 (en) Valve device
JP2005069464A (en) Valve opened for atmosphere and breather plug structure
JP2012102808A (en) Sealing cap
JP4654681B2 (en) Waterproof structure of waterproof motor output shaft
EP1847739A3 (en) Improved ball valve and valve seat
JP4415214B2 (en) Port plug
IL37802A (en) Closures for a connector box
JP3127795U (en) Check valve
JP2005273693A (en) Sealing device
JP3041183B2 (en) Gas shut-off valve
CN117739120A (en) Sealing device and drive unit comprising a sealing device
KR100562689B1 (en) Pneumatic actuator
JPH11501242A (en) Ring parts

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080507

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080507

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100805

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100907

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101108

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: 20110510

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110511

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140520

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4744935

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140520

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250