JPH0641790B2 - Cylinder closed structure and its processing method - Google Patents

Cylinder closed structure and its processing method

Info

Publication number
JPH0641790B2
JPH0641790B2 JP2243582A JP24358290A JPH0641790B2 JP H0641790 B2 JPH0641790 B2 JP H0641790B2 JP 2243582 A JP2243582 A JP 2243582A JP 24358290 A JP24358290 A JP 24358290A JP H0641790 B2 JPH0641790 B2 JP H0641790B2
Authority
JP
Japan
Prior art keywords
sealing plate
locking groove
cylindrical body
outer peripheral
sides
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
Application number
JP2243582A
Other languages
Japanese (ja)
Other versions
JPH04125359A (en
Inventor
照水 村井
隆幸 船木
明 堀内
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.)
SMC Corp
Original Assignee
SMC 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 SMC Corp filed Critical SMC Corp
Priority to JP2243582A priority Critical patent/JPH0641790B2/en
Publication of JPH04125359A publication Critical patent/JPH04125359A/en
Publication of JPH0641790B2 publication Critical patent/JPH0641790B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/565—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits involving interference fits, e.g. force-fits or press-fits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1248—Interpenetrating groove joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
    • B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
    • B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7428—Transition metals or their alloys
    • B29C66/74283—Iron or alloys of iron, e.g. steel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、エアシリンダのチューブのような筒体の端部
を密閉するための密閉構造、及びその密閉構造を得るた
めの加工方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing structure for sealing an end portion of a tubular body such as a tube of an air cylinder, and a processing method for obtaining the sealing structure. Is.

［従来の技術］ 従来、この種の筒体の端部を密閉する方法の一つに加圧
圧着法がある。これは、第５図及び第６図に示すよう
に、内周面に係止溝２を設けた筒体１の内部に封止板３
を挿入し、該封止板３を係止溝２の位置においてポンチ
４と支持台５とで両面から加圧することにより径方向に
伸長させ、その周縁部を上記係止溝２内に圧入する方法
である。[Prior Art] Conventionally, there is a pressure bonding method as one of the methods for sealing the end portion of this type of cylindrical body. As shown in FIG. 5 and FIG. 6, the sealing plate 3 is provided inside the cylindrical body 1 having the engaging groove 2 on the inner peripheral surface.
Is inserted, and the sealing plate 3 is radially expanded by pressurizing both sides of the sealing plate 3 with the punch 4 and the support 5 at the position of the locking groove 2, and the peripheral portion thereof is press-fitted into the locking groove 2. Is the way.

この方法は、封止板３の形状及び加工が簡単で、その圧
着作業も短時間に行うことができるという利点がある
が、封止板３が係止溝２に対して最適位置に設置されて
いなければ偏圧入の状態が生じて密閉性が悪くなるとい
う問題を有しており、これを防止するために治具で正確
に封止板を溝位置に設置しなければ、封止板３の周縁部
を係止溝２内に高い密閉度を保った状態で圧入すること
が難しかった。また、封止板３を加圧する際の加圧力の
不足により密閉性が不十分となって流体の漏れを生じる
ことがあり、それを防ぐために加圧力を大きくすると、
封止板３が必要以上に拡径して過度の力で係止溝２の溝
底に圧着し、筒体１を外側に押圧するため、該筒体１に
反りを生じさせることになり易い。This method has an advantage that the shape and processing of the sealing plate 3 are simple and the crimping work can be performed in a short time, but the sealing plate 3 is installed at the optimum position with respect to the locking groove 2. If it is not, there is a problem that uneven press-fitting occurs and the hermeticity deteriorates. To prevent this, if the sealing plate is not accurately installed in the groove position with a jig, the sealing plate 3 It was difficult to press-fit the peripheral edge portion of the above into the locking groove 2 while maintaining a high degree of sealing. In addition, due to insufficient pressure when pressurizing the sealing plate 3, the hermeticity may become insufficient and fluid leakage may occur. To prevent this, if the pressure is increased,
The diameter of the sealing plate 3 is expanded more than necessary, and the sealing plate 3 is pressed against the groove bottom of the locking groove 2 with an excessive force to press the cylindrical body 1 to the outside, so that the cylindrical body 1 is likely to be warped. .

［発明が解決しようとする課題］ 本発明の技術的課題は、簡単な手段により筒体と封止板
との密閉性を高められるようにした筒体の密閉構造及び
その加工方法を提供することにある。[Problems to be Solved by the Invention] A technical problem of the present invention is to provide a closed structure of a cylindrical body and a method of processing the same so that the tightness between the cylindrical body and the sealing plate can be enhanced by a simple means. It is in.

［課題を解決するための手段］ 上記課題を解決するため、本発明に係る筒体の密閉構造
は、内周面に設けた係止溝の溝底に、両側面が溝底に向
いて広がる円周方向の突条を有する金属製の筒体と、該
筒体内に挿入されて外周部が上記係止溝内に圧入された
金属製の封止板とで構成され、上記係止溝内の突条は、
封止板の外周面に圧接して食い込んだ状態にあり、上記
封止板は、両面側からの加圧により拡径して外周部が筒
体の係止溝内に圧入して、その外周面への上記突条の食
い込みにより係止溝を幅方向に押し広げた状態で、かつ
筒体を弾性変形内で拡径させ、それによって封止板外周
部が係止溝内に係止されていることを特徴とするもので
ある。[Means for Solving the Problems] In order to solve the above problems, in the closed structure for a cylindrical body according to the present invention, both side surfaces spread toward the groove bottom of the locking groove provided on the inner peripheral surface. In the locking groove, the cylindrical body is made of metal and has a ridge in the circumferential direction, and a sealing plate made of metal is inserted into the cylindrical body and the outer peripheral portion of which is pressed into the locking groove. The ridge of
The sealing plate is in a state of being pressed into contact with the outer peripheral surface of the sealing plate, and the sealing plate is expanded in diameter by pressure from both sides, and the outer peripheral portion is press-fitted into the locking groove of the cylinder, With the protrusions biting into the surface, the locking groove is pushed wide in the width direction, and the diameter of the cylindrical body is expanded within the elastic deformation, whereby the outer peripheral portion of the sealing plate is locked in the locking groove. It is characterized by that.

また、本発明に係る筒体の密閉加工方法は、内周面に係
止溝を設けた金属製の筒体内に外周部を上記係止溝に対
向させた金属製の封止板を配置し、その封止板を両面側
からの加圧により拡径して、封止板外周部を筒体の係止
溝内に圧入固定するに際し、上記筒体の係止溝の溝底
に、塑性変形量を予定した両側面が溝底に向いて広がる
円周方向の突条を形成しておき、封止板の加圧による該
板外周部の拡径時に、上記突条を封止板の外周面に食い
込ませて、該封止板外周部を突条の両側面に沿い変形さ
せて係止溝を幅方向に押し広げると共に、筒体を弾性変
形内で拡径させ、それによって封止板外周部を係止溝内
に係止させることを特徴とするものである。Further, the method for hermetically sealing a tubular body according to the present invention includes disposing a metal sealing plate having an outer peripheral portion facing the locking groove in a metallic cylindrical body having a locking groove on an inner peripheral surface. , The diameter of the sealing plate is expanded by pressure from both sides, and when the outer peripheral portion of the sealing plate is press-fitted and fixed in the locking groove of the cylindrical body, plastic deformation is applied to the groove bottom of the locking groove of the cylindrical body. Circumferential ridges are formed in which both sides, which are designed to have a certain amount of deformation, expand toward the groove bottom, and the ridges of the sealing plate are expanded when the outer peripheral portion of the plate is expanded by pressurizing the sealing plate. By biting into the outer peripheral surface, the outer peripheral portion of the sealing plate is deformed along both side surfaces of the ridge to widen the locking groove in the width direction, and at the same time the cylindrical body is expanded within the elastic deformation, thereby sealing. The outer peripheral portion of the plate is locked in the locking groove.

［作用］ 筒体の内周面に設けた係止溝の溝底に、両側面が溝底に
向いて広がる円周方向の突条を設けておき、封止板をそ
の両面から加圧することにより拡径させて、その外周部
を係止溝内に圧入すると共に、周側面に上記突条を食い
込み状態に係止させると、上記封止板の外周部が、突条
の食い込みにより係止溝を幅方向に押し広げた状態で、
かつ筒体を弾性変形内で拡径させるので、封止板の外周
部が係止溝内に強固に係止され、筒体と封止板との機械
的結合度が高められると共に、密閉度が高められる。[Operation] A circumferential projection is formed on both sides of the locking groove provided on the inner peripheral surface of the cylindrical body so that both side surfaces extend toward the groove bottom, and the sealing plate is pressed from both sides. The outer peripheral part of the sealing plate is locked by the bite of the sealing plate when the outer peripheral part is pressed into the locking groove and the protruding part is locked in the peripheral side surface in a biting state. With the groove expanded in the width direction,
Moreover, since the diameter of the cylindrical body is expanded within the elastic deformation, the outer peripheral portion of the sealing plate is firmly locked in the locking groove, the degree of mechanical coupling between the cylindrical body and the sealing plate is increased, and the sealing degree is improved. Is increased.

［実施例］ 以下、本発明の実施例を図面を参照しながら詳細に説明
する。Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.

第１図は本発明による筒体の密閉構造の一例を示すもの
で、同図において、１０は流体圧シリンダのチューブ等
を構成する金属製の筒体、１１は該筒体１０の端部を密
閉する金属製の封止板を示している。そして、該封止板
１１は、次のようにして筒体１０に取り付けられてい
る。FIG. 1 shows an example of a sealed structure of a cylindrical body according to the present invention. In FIG. 1, 10 is a metal cylindrical body that constitutes a tube of a fluid pressure cylinder, and 11 is an end portion of the cylindrical body 10. The metal sealing plate which seals is shown. Then, the sealing plate 11 is attached to the cylindrical body 10 as follows.

即ち、封止板１１の取付けに際しては、第２図から分か
るように、上記筒体１０の内周面に、溝底に円周方向の
突条１３を有する係止溝１２を切設しておき、該筒体１
０内にその内径と同程度の大きさかそれよりやや小さめ
に形成した上記封止板１１を挿入し、該封止板１１を係
止溝１２の位置においてポンチ１４と支持台１５とで両
面から加圧することにより拡径させ、その外周部を係止
溝１２内に圧入すると共に、周側面に上記突条１３を食
い込み状態に係止させる（第１図参照）。このとき、上
記係止溝１２内の突条１３は、封止板１１の周面と圧接
してその封止板周面に食い込みながら塑性変形した状態
にあり、この突条１３の食い込みにより、筒体１０と封
止板１１との機械的結合度及び密閉度が著しく高められ
る。That is, when mounting the sealing plate 11, as can be seen from FIG. 2, the locking groove 12 having the circumferential projection 13 on the groove bottom is cut on the inner peripheral surface of the cylindrical body 10. Every time, the cylinder 1
The sealing plate 11 formed in the same size as the inner diameter or slightly smaller than the inner diameter thereof is inserted into 0, and the sealing plate 11 is located at the position of the locking groove 12 from both sides by the punch 14 and the support base 15. The diameter is expanded by applying pressure, the outer peripheral portion is press-fitted into the locking groove 12, and the protrusion 13 is locked in the biting state on the peripheral side surface (see FIG. 1). At this time, the protrusion 13 in the locking groove 12 is in a state of being plastically deformed while being pressed against the peripheral surface of the sealing plate 11 and biting into the peripheral surface of the sealing plate 11. The mechanical coupling degree and sealing degree between the cylindrical body 10 and the sealing plate 11 are significantly enhanced.

一方、上記封止板１１は、ポンチ１４と支持台１５によ
る両面側からの加圧により拡径して、外周部が筒体１０
の係止溝１２内に圧入し、その外周面が、上記突条１３
との食い込み状態で、筒体１０自体を弾性変形内におい
て拡径させ、それによって封止板１１の外周部が係止溝
１２内に係止せしめられた状態にある。On the other hand, the sealing plate 11 is expanded in diameter by pressurization from both sides by the punch 14 and the support base 15, and the outer peripheral portion has the cylindrical body 10.
Is press-fitted into the locking groove 12 of the
In the state of biting into, the cylindrical body 10 itself is expanded in diameter due to elastic deformation, whereby the outer peripheral portion of the sealing plate 11 is locked in the locking groove 12.

このような状態で筒体の密閉を行うためには、封止板１
１による筒体１０の密閉加工に際して、予め筒体１０内
周面の係止溝１２内に設ける突条１３を、その材質、形
状等を考慮し、必要に応じて実験を行うことにより、最
終的な封止板１１の装着状態において、予定の塑性変形
量が得られるように予め形成しておく必要がある。上記
最終的な封止板１１の装着状態とは、封止板１１の加圧
により筒体１０を弾性変形内において拡径させ、それに
よって封止板１１の外周部が筒体１０の係止溝１２内に
弾性的に係止せしめられた状態である。In order to seal the cylinder in such a state, the sealing plate 1
When the cylindrical body 10 is hermetically sealed by means of No. 1, the ridge 13 provided in advance in the locking groove 12 on the inner peripheral surface of the cylindrical body 10 is considered in consideration of its material, shape, etc. It is necessary to form the sealing plate 11 in advance so that a predetermined amount of plastic deformation can be obtained in the mounted state. The final mounting state of the sealing plate 11 means that the cylindrical body 10 is expanded in the elastic deformation by the pressing of the sealing plate 11, so that the outer peripheral portion of the sealing plate 11 is locked to the cylindrical body 10. It is in a state of being elastically locked in the groove 12.

従って、予め適当な塑性変形量を予定して形成した突条
１３に、封止板１１の拡径で所要の塑性変形を与えなが
らそれを封止板周面に食い込ませ、同時に、該封止板１
１の外周面により筒体１０を弾性変形内で拡径させ、そ
れにより封止板外周部を係止溝１２内に突条１３の塑性
変形による密閉状態に係止させる。Therefore, the projection 13 formed in advance with an appropriate amount of plastic deformation is caused to bite into the peripheral surface of the sealing plate while giving the required plastic deformation by expanding the diameter of the sealing plate 11, and at the same time, the sealing is performed. Board 1
The outer peripheral surface of 1 expands the diameter of the cylindrical body 10 within the elastic deformation, whereby the outer peripheral portion of the sealing plate is locked in the locking groove 12 in a closed state by the plastic deformation of the protrusion 13.

第３図は、第２図の状態から封止板１１を圧縮により拡
開させて筒体１０を封止したときの状態を示している。
係止溝１２内の突条１３は、封止板１１に食い込みなが
ら塑性変形して両側に拡がり、突条１３の食い込みによ
ってその両側に延出した封止板の周縁部１１ａは、その
封止板１１に食い込む突条１３の圧縮力によりＦ２の力
で押し広げられ、突条に圧接しながらその両側の係止溝
１２内の空間を埋めることになり、密封度が非常に良好
になる。FIG. 3 shows a state in which the sealing plate 11 is expanded by compression from the state of FIG. 2 to seal the tubular body 10.
The protrusion 13 in the locking groove 12 is plastically deformed while biting into the sealing plate 11 and spreads to both sides, and the peripheral edge portion 11a of the sealing plate extended to both sides by the biting of the protrusion 13 is the sealing member. The compressive force of the ridges 13 that bite into the plate 11 pushes it apart with the force of F 2 , and fills the spaces in the locking grooves 12 on both sides of the ridges while pressing it against the ridges, resulting in a very good degree of sealing. .

しかも、筒体１０の弾性変形を考慮して突条１３の圧縮
変形量を定めるため、圧縮中は封止板１１による拡開力
Ｆ１で筒体１０の外周部が膨らむことがあったとして
も、その膨らみが弾性変形内にとどめられ、封止板を筒
体外周部の弾性力で圧縮する形態となる。Moreover, since the amount of compressive deformation of the protrusion 13 is determined in consideration of the elastic deformation of the tubular body 10, it is considered that the outer peripheral portion of the tubular body 10 may swell due to the expanding force F 1 by the sealing plate 11 during compression. Also, the bulge is kept within the elastic deformation and the sealing plate is compressed by the elastic force of the outer peripheral portion of the cylindrical body.

上記加工に際し、ポンチ１４と支持台１５とで封止板１
１を両面から加圧、拡径させる場合に、そのポンチ１４
と支持台１５の一方または双方を中高かに形成したり、
封止板素材の流れを制御するような形状にしておくと、
封止板１１の拡径を制御、調整することができる。At the time of the above-mentioned processing, the punch 14 and the support base 15 form the sealing plate 1.
When pressurizing and expanding the diameter of 1 from both sides, the punch 14
One or both of the support base 15 and the support base 15 may be formed in a middle height,
If it is shaped so as to control the flow of the sealing plate material,
The diameter expansion of the sealing plate 11 can be controlled and adjusted.

上記突条１３の形状や本数は、本発明の趣旨を損なわな
い範囲内で適宜選定することができ、例えば第２図に示
すような断面三角形状のものや、第４図に示すような台
形状のものなどを用いることができ、それらは筒体１０
及び封止板１１を構成する金属の固さや、封止板１１の
寸法、係止溝１２の大きさ等によって適当に選択され
る。The shape and the number of the ridges 13 can be appropriately selected within a range that does not impair the gist of the present invention. For example, one having a triangular cross section as shown in FIG. 2 or a base as shown in FIG. It is possible to use a shape or the like, which is the cylindrical body 10.
Also, it is appropriately selected depending on the hardness of the metal forming the sealing plate 11, the size of the sealing plate 11, the size of the locking groove 12, and the like.

［発明の効果］ このように本発明によれば、係止溝の溝底に両側面が溝
底に向けて広がる突条を設けたという非常に簡単な構成
でありながら、この突条が封止板の外周部に食い込んで
係止溝を幅方向に押し広げた状態で、かつ筒体を弾性変
形内で拡径させるので、筒体と封止板との機械的結合度
が強固になって、それらの密閉度を高めることができ
る。[Effects of the Invention] According to the present invention, as described above, even though the locking groove has a very simple structure in which both sides are provided with ridges that spread toward the groove bottom, the ridge is sealed. Since the diameter of the tubular body is expanded within the elastic deformation by biting into the outer periphery of the stop plate and pushing the locking groove in the width direction, the degree of mechanical coupling between the tubular body and the sealing plate is strengthened. The degree of tightness can be increased.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明による筒体の密閉構造を示す要部断面
図、第２図はその封止板の圧着前の状態を示す要部拡大
断面図、第３図は封止板による封止状態を説明するため
の要部拡大断面図、第４図は係止溝の他の例を示す要部
断面図、第５図は従来例の部分断面図、第６図はその封
止板の圧着前の状態を示す要部拡大断面図である。 １０……筒体、１１……封止板、 １２……係止溝、１３……突条。FIG. 1 is a sectional view of an essential part showing a sealing structure of a cylindrical body according to the present invention, FIG. 2 is an enlarged sectional view of an essential part showing a state before crimping of the sealing plate, and FIG. 3 is sealing with a sealing plate. FIG. 4 is an enlarged sectional view of an essential part for explaining the state, FIG. 4 is a sectional view of an essential part showing another example of the locking groove, FIG. 5 is a partial sectional view of a conventional example, and FIG. It is a principal part expanded sectional view which shows the state before pressure bonding. 10 ... Cylindrical body, 11 ... Sealing plate, 12 ... Locking groove, 13 ... Protrusion.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】内周面に設けた係止溝の溝底に、両側面が
溝底に向いて広がる円周方向の突条を有する金属製の筒
体と、該筒体内に挿入されて外周部が上記係止溝内に圧
入された金属製の封止板とで構成され、 上記係止溝内の突条は、封止板の外周面に圧接して食い
込んだ状態にあり、 上記封止板は、両面側からの加圧により拡径して外周部
が筒体の係止溝内に圧入して、その外周面への上記突条
の食い込みにより係止溝を幅方向に押し広げた状態で、
かつ筒体を弾性変形内で拡径させ、それによって封止板
外周部が係止溝内に係止されている、 ことを特徴とする筒体の密閉構造。1. A metal tubular body having circumferentially extending projections on both sides of the locking groove provided on the inner peripheral surface, the both sides extending toward the groove bottom, and the metal tubular body being inserted into the tubular body. The outer peripheral portion is composed of a metal sealing plate press-fitted into the locking groove, and the ridge in the locking groove is in a state of being pressed into the outer peripheral surface of the sealing plate and biting into it. The sealing plate is expanded by pressure from both sides, the outer peripheral part is press-fit into the locking groove of the cylindrical body, and the locking groove is pushed in the width direction by the biting of the protrusion on the outer peripheral surface. In the unfolded state,
In addition, the tubular body is expanded within the elastic deformation, whereby the outer peripheral portion of the sealing plate is locked in the locking groove, and the sealed structure of the cylindrical body. 【請求項２】内周面に係止溝を設けた金属製の筒体内に
外周部を上記係止溝に対向させた金属製の封止板を配置
し、その封止板を両面側からの加圧により拡径して、封
止板外周部を筒体の係止溝内に圧入固定するに際し、 上記筒体の係止溝の溝底に、塑性変形量を予定した両側
面が溝底に向いて広がる円周方向の突条を形成してお
き、封止板の加圧による該板外周部の拡径時に、上記突
条を封止板の外周面に食い込ませて、該封止板の外周部
を突条の両側面に沿い変形させて係止溝を幅方向に押し
広げると共に、筒体を弾性変形内で拡径させ、それによ
って封止板外周部を係止溝内に係止させる、ことを特徴
とする筒体の密閉加工方法。2. A metal sealing plate having an outer peripheral portion facing the locking groove is disposed in a metal cylinder having a locking groove formed on the inner peripheral surface, and the sealing plate is provided from both sides. When the outer diameter of the sealing plate is press-fitted and fixed in the locking groove of the cylindrical body, the both sides of the locking groove of the cylindrical body have groove A circumferential ridge extending toward the bottom is formed, and when the sealing plate is pressed to increase the diameter of the outer periphery of the plate, the ridge is made to bite into the outer peripheral surface of the sealing plate, and the sealing plate is sealed. The outer peripheral part of the stop plate is deformed along both sides of the ridge to widen the locking groove in the width direction, and at the same time, the diameter of the cylindrical body is expanded within the elastic deformation. A method for hermetically sealing a cylindrical body, comprising:
JP2243582A 1990-09-13 1990-09-13 Cylinder closed structure and its processing method Expired - Lifetime JPH0641790B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2243582A JPH0641790B2 (en) 1990-09-13 1990-09-13 Cylinder closed structure and its processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2243582A JPH0641790B2 (en) 1990-09-13 1990-09-13 Cylinder closed structure and its processing method

Publications (2)

Publication Number Publication Date
JPH04125359A JPH04125359A (en) 1992-04-24
JPH0641790B2 true JPH0641790B2 (en) 1994-06-01

Family

ID=17105967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2243582A Expired - Lifetime JPH0641790B2 (en) 1990-09-13 1990-09-13 Cylinder closed structure and its processing method

Country Status (1)

Country Link
JP (1) JPH0641790B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4602663B2 (en) * 2003-12-24 2010-12-22 日本化薬株式会社 Tubing partitioning method, tubing produced by the method, and gas generator
JP5191774B2 (en) * 2008-03-31 2013-05-08 カヤバ工業株式会社 Torque sensor and manufacturing method thereof
ES2359693B1 (en) * 2008-10-31 2012-04-02 Bsh Electrodomésticos España, S.A. GAS COLLECTOR DUCT AND GAS OPERATED DEVICE WITH A GAS COLLECTOR DUCT.
JP5636612B2 (en) * 2010-04-01 2014-12-10 Smc株式会社 Cap used for fluid pressure device and fixing method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126252U (en) * 1974-08-15 1976-02-26
JPS6446066A (en) * 1987-08-11 1989-02-20 Kayaba Industry Co Ltd Hydraulic buffer

Also Published As

Publication number Publication date
JPH04125359A (en) 1992-04-24

Similar Documents

Publication Publication Date Title
JP3532714B2 (en) Sealing device
JPS5913166A (en) Hydraulic type piston and sealing device for piston rod
JPS6134003B2 (en)
US2657825A (en) Seal
JPH0641790B2 (en) Cylinder closed structure and its processing method
US20080193258A1 (en) Device To Be Fixed In A Support-Member Recess Configured In A Support Member
EP0055656B1 (en) Method of fastening a first shell to a second shell to form a sealed housing
US4126316A (en) Method of installing shaft seal with reformable shell
JP3270036B2 (en) Crimping type pipe joint for connecting metal pipes and fastening method thereof
EP1141577B1 (en) A piston or plunger and a method for making the same
JP3002891B2 (en) Manufacturing method of sealing device
JP2009097684A (en) Seal mechanism
US5052697A (en) Sealing member for ferrofluid seal and method of producing the same
US8342538B2 (en) Gasket-end feature for sealing a T-joint assembly
JP3970574B2 (en) Sealing device
JP4496004B2 (en) Pipe fitting
JP2001027330A (en) Fitting method for sealing device
JP3471498B2 (en) Packing
JPH0710628U (en) Packing
JP2583045Y2 (en) Bearing device
JP3057783B2 (en) Method of manufacturing hose device
JP2577707Y2 (en) Bearing seal
TW202421944A (en) Annular metal seal, installation structure of annular metal seal, and installation method of annular metal seal
JP3349807B2 (en) Hose connection structure, hose connection tool and hose connection nipple
JP3150858B2 (en) Oil seal