JP2000304026A - Sealing device with falling-off preventive function - Google Patents
Sealing device with falling-off preventive functionInfo
- Publication number
- JP2000304026A JP2000304026A JP11112841A JP11284199A JP2000304026A JP 2000304026 A JP2000304026 A JP 2000304026A JP 11112841 A JP11112841 A JP 11112841A JP 11284199 A JP11284199 A JP 11284199A JP 2000304026 A JP2000304026 A JP 2000304026A
- Authority
- JP
- Japan
- Prior art keywords
- sealing device
- falling
- shaft
- seal
- sealing
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Bolts, Nuts, And Washers (AREA)
- Gasket Seals (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は第1部材の軸部を第
2部材の軸孔に嵌合して組み合わされる2部材の対向面
間に介装され、両対向面間をシールするシール部材を備
えた脱落防止機能付きシール装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing member which is interposed between two opposing surfaces of a first member which are fitted into a shaft hole of a second member and which are combined with each other to seal between the opposing surfaces. The present invention relates to a seal device having a fall-prevention function provided with:
【0002】[0002]
【従来の技術】筒内燃料直接噴射式エンジンにおいて
は、図14に示すように、シリンダーヘッド101にお
ける燃焼室102に開口する取付孔103に燃料噴射弁
100を嵌着し、燃料噴射弁100から燃焼室102内
に直接的に高圧燃料を噴射するように構成されている。
この燃料噴射弁100は、インテークマニホールドに取
付けられる低圧型のタイプと違って、燃焼室102の燃
焼ガスに直接曝される為に耐熱性や耐圧性、耐振性など
の条件が厳しく、当該燃料噴射弁100と前記取付孔1
03との間には耐熱性や耐圧性を備えた単又は複数のシ
ール部材が介装され、特に前記燃焼室102に臨むノズ
ル部104には、シール部材として断面波形で軸方向に
バネ性を有するコルゲートワッシャ105が用いられて
いる。そして、燃料噴射弁100を取付孔103に組み
付ける際には、取付具106により取付フランジ107
をシリンダーヘッド101の座面に押し付けて前記コル
ゲートワッシャ105を弾性圧縮させ、当該コルゲート
ワッシャの弾性復元力を利用して高圧燃焼ガスが作用す
る前記ノズル部104とシリンダーヘッド101間を確
実にシールしている。2. Description of the Related Art In an in-cylinder direct fuel injection engine, as shown in FIG. 14, a fuel injection valve 100 is fitted into a mounting hole 103 opened in a combustion chamber 102 of a cylinder head 101, and the fuel injection valve 100 It is configured to inject high-pressure fuel directly into the combustion chamber 102.
Unlike the low-pressure type that is mounted on the intake manifold, the fuel injection valve 100 is directly exposed to the combustion gas in the combustion chamber 102, and therefore has strict conditions such as heat resistance, pressure resistance, and vibration resistance. Valve 100 and mounting hole 1
A single or a plurality of seal members having heat resistance and pressure resistance are interposed between the nozzle member 03 and the nozzle portion 104 facing the combustion chamber 102. In particular, the nozzle member 104 having a cross-sectional waveform as a seal member has a spring property in the axial direction. The corrugated washer 105 is used. When assembling the fuel injection valve 100 into the mounting hole 103, the mounting tool 106 is used to mount the fuel injection valve 100 on the mounting flange 107.
Is pressed against the bearing surface of the cylinder head 101 to elastically compress the corrugated washer 105, and the elastic restoring force of the corrugated washer is used to securely seal between the nozzle portion 104 where the high-pressure combustion gas acts and the cylinder head 101. ing.
【0003】[0003]
【発明が解決しようとする課題】ところで、燃料噴射弁
100とシリンダーヘッド101との間に前記コルゲー
トワッシャ105を介装する手順は、先ず当該コルゲー
トワッシャ105をノズル部104に外装した後、前記
燃料噴射弁100と共に取付孔103内へ挿通するもの
である。そして燃焼室に開口する取付孔103に前記燃
料噴射弁100を装着する際には、前記ノズル部104
の先端側が下向きの方向となり、前記コルゲートワッシ
ャ105が該ノズル部104から容易に抜け落ちること
となる。因って、コルゲートワッシャ105を外装する
ノズル部104の外周面には、従来、粘着性を有する接
着剤やグリス等を予め塗布しておくことが不可欠であっ
た。これら接着剤やグリスを塗布する工程は非常に煩雑
であり、特に接着剤を塗布した場合には、組み付け時の
コルゲートワッシャの移動がスムーズでなくなり作業性
及び対向面間における前記コルゲートワッシャの収まり
が悪くなるとともに、前記接着剤がワッシャのシール面
に僅かに付着するだけでシール性が著しく低下すること
となる。また、グリスを塗布した場合には、シール性に
対する影響は少ないものの、接着状態を維持するための
温度条件が厳しく、振動を与えることで前記コルゲート
ワッシャーが容易に抜け落ちてしまう非常に不安定なも
のであった。By the way, the procedure of interposing the corrugated washer 105 between the fuel injection valve 100 and the cylinder head 101 is as follows. It is inserted into the mounting hole 103 together with the injection valve 100. When the fuel injection valve 100 is mounted in the mounting hole 103 opening to the combustion chamber, the nozzle 104
Is directed downward, so that the corrugated washer 105 easily falls off from the nozzle portion 104. Therefore, it has conventionally been essential to apply an adhesive having adhesiveness, grease, or the like to the outer peripheral surface of the nozzle portion 104 that covers the corrugated washer 105 in advance. The process of applying these adhesives and grease is very complicated, and particularly when the adhesive is applied, the movement of the corrugated washer during assembling is not smooth, and the workability and the fit of the corrugated washer between the opposing surfaces are reduced. At the same time, the adhesive is only slightly adhered to the seal surface of the washer, so that the sealing property is significantly reduced. In addition, when grease is applied, although the influence on the sealability is small, the temperature condition for maintaining the adhesion state is severe, and the corrugated washer is easily dropped off by applying vibration, which is very unstable. Met.
【0004】本発明はかかる現況に鑑みなされたもの
で、コルゲートワッシャ等のシール部材を外装する軸
部、特に燃料噴射弁におけるノズル部等の外周部に予め
接着剤やグリス等を塗布する工程を省略しつつ、前記シ
ール部材の脱落が確実に防止できるシール装置を提供せ
んとするものである。The present invention has been made in view of such a situation, and includes a step of applying an adhesive, grease, or the like in advance to a shaft portion that covers a sealing member such as a corrugated washer, particularly, an outer peripheral portion of a nozzle portion or the like of a fuel injection valve. It is an object of the present invention to provide a sealing device that can reliably prevent the sealing member from falling off while omitting it.
【0005】[0005]
【課題を解決するための手段】本発明者は前述の課題を
解決するにあたり鋭意検討を進めた結果、シール部材に
対して前記軸部の外周面に圧接される機能を付加するこ
とにより、前記軸部外周面に接着剤やグリス等を塗布す
ることなくシール部材の脱落が防止できることを見出
し、本発明を完成するに至った。Means for Solving the Problems The inventor of the present invention has made intensive studies to solve the above-mentioned problems, and as a result, by adding a function of being pressed against the outer peripheral surface of the shaft portion with respect to the sealing member, It has been found that the sealing member can be prevented from falling off without applying an adhesive or grease to the outer peripheral surface of the shaft portion, and the present invention has been completed.
【0006】すなわち本発明は、第1部材の軸部が第2
部材の軸孔に嵌合して組み合わされる2部材の対向面間
に介装され、両対向面間をシールするシール部材を備え
たシール装置であって、前記軸部に外装されるシール部
材の少なくとも内周面の一部又は全部に、弾力変形によ
り軸部の外周面に圧接される摩擦圧接部を一体的に形成
してなる脱落防止機能付きシール装置を提供する。ここ
に、摩擦圧接部を一体的に形成するとは、該摩擦圧接部
をシール部材に被覆形成すること以外に、摩擦圧接部と
して別部材で構成したものをシール部材に接着すること
や、着脱自在に嵌着することも含まれ、シール部材と一
体的に動作するものを意味する。このようなシール装置
は、前記摩擦圧接部を介して軸部外周面に圧着され、該
軸部に予め接着剤やグリス等を塗布することなく脱落が
確実に防止されるとともに、前記2部材の組み付けの際
には摩擦圧接部と軸部間の摩擦抵抗よりも大きな力で軸
孔に挿通されることで、軸部外周面上を軸方向に移動
し、前記軸部における適正な位置まで移動する。That is, according to the present invention, the shaft portion of the first member is
A sealing device provided with a seal member interposed between two opposing surfaces of two members fitted and combined in a shaft hole of the member, and sealing between the two opposing surfaces. Provided is a sealing device with a falling-off preventing function, in which at least a part or the whole of an inner peripheral surface is integrally formed with a friction pressure contact portion pressed against an outer peripheral surface of a shaft portion by elastic deformation. Here, integrally forming the friction welding portion means that, besides forming the friction welding portion on the sealing member, the friction welding portion formed as a separate member as the friction welding portion can be adhered to the sealing member or can be detachably attached. , Which means to operate integrally with the seal member. Such a sealing device is pressure-bonded to the outer peripheral surface of the shaft portion via the friction welding portion, and is reliably prevented from falling without applying an adhesive, grease, or the like to the shaft portion in advance. At the time of assembly, it is inserted into the shaft hole with a force larger than the frictional resistance between the friction welding part and the shaft part, moves in the axial direction on the outer peripheral surface of the shaft part, and moves to the appropriate position on the shaft part I do.
【0007】ここで、前記シール部材としてコルゲート
ワッシャを用い、且つ摩擦圧接部を前記コルゲートワッ
シャの内部空間側へ突出してなるシール装置にあって
は、コルゲートワッシャ両端のシール面と前記2部材と
の間に摩擦圧接部が介在しないので、該コルゲートワッ
シャは前記シール面の良好なシール性を維持したまま軸
部に圧着される。Here, in a sealing device using a corrugated washer as the sealing member and projecting a friction pressure contact portion toward the inner space side of the corrugated washer, the sealing member at both ends of the corrugated washer and the two members are provided. Since no friction welding portion is interposed therebetween, the corrugated washer is pressed against the shaft while maintaining good sealing performance of the sealing surface.
【0008】また本発明は、第1部材の軸部が第2部材
の軸孔に嵌合して組み合わされる2部材の対向面間に介
装され、両対向面間をシールするシール部材を備えたシ
ール装置であって、前記軸部に外装されるシール部材と
は別体で構成され、該シール部材に対して軸部先端側の
位置に外装される脱落防止部材を設け、該脱落防止部材
の少なくとも内周面の一部又は全部に弾力変形により軸
部の外周面に圧接する摩擦圧接部を一体的に形成してな
る脱落防止機能付きシール装置をも提供する。このよう
に、シール部材と別体で構成した脱落防止部材を軸部先
端側に圧着することで、前記シール部材の軸部先端方向
への移動が衝止され、該シール部材は軸部に対して脱落
不能に支持されるとともに、前記2部材の組み付けの際
には前記脱落防止部材の摩擦圧接部と軸部間の摩擦抵抗
よりも大きな力で軸孔に挿通されることで、軸部外周面
上を軸方向に移動し、軸部の適正な位置まで移動する。The present invention further includes a seal member interposed between the opposing surfaces of the two members, the shaft of the first member being fitted into the shaft hole of the second member, and sealing between the opposing surfaces. A sealing device which is formed separately from a sealing member provided on the shaft portion, and provided with a falling-off preventing member provided on the shaft member at a position on the tip side with respect to the sealing member, wherein the falling-off preventing member is provided. The present invention also provides a sealing device with a falling-off prevention function, in which at least a part or the whole of the inner peripheral surface is integrally formed with a friction pressure contact portion which presses against the outer peripheral surface of the shaft portion by elastic deformation. In this way, by pressing the falling-off preventing member formed separately from the sealing member against the distal end of the shaft, the movement of the sealing member toward the distal end of the shaft is stopped, and the sealing member is moved relative to the shaft. And at the time of assembling the two members, by being inserted into the shaft hole with a force greater than the frictional resistance between the friction welding portion of the fall prevention member and the shaft portion, the outer periphery of the shaft portion It moves on the surface in the axial direction, and moves to the appropriate position of the shaft.
【0009】ここで、前記脱落防止部材としてシート状
の部材を用い且つその内周部に内方へ突出する摩擦圧接
部を形成したものや、同じくシート状部材の内周部に複
数の切り込みを入れた摩擦圧接部を形成したものにあっ
ては、これらシート状の脱落防止部材が軸部に圧着され
ることで上記の如く前記シール部材の脱落が防止され
る。Here, a sheet-shaped member is used as the falling-off prevention member, and a friction pressure contact portion which protrudes inward is formed on the inner periphery thereof, or a plurality of cuts are similarly formed on the inner periphery of the sheet-like member. In the case where the friction-welded portion is formed, the sheet-shaped stopper member is pressed against the shaft portion to prevent the seal member from falling off as described above.
【0010】また、前記脱落防止部材をシール部材に接
着して一体化すれば、当該シール装置の軸部への装着が
容易になる。Further, if the falling-off preventing member is bonded to and integrated with the sealing member, the sealing device can be easily mounted on the shaft.
【0011】さて、このような脱落防止部材をシール部
材に対して軸部の先端側位置に装着してなるものでは、
前記脱落防止部材がシール部材と第2部材との間のシー
ル性に悪影響を及ぼす可能性があるが、シール部材とし
てコルゲートワッシャを用い且つ脱落防止部材を該コル
ゲートワッシャの内部空間内に配置させたものでは、前
記コルゲートワッシャ両面のシール面と前記2部材との
間に脱落防止部材が介在することなくシール性はそのま
ま維持され、また、脱落防止部材がシール部材と第2部
材間をシールするものであれば、上記シール性に全く問
題を生じないとともに、該シール性を更に向上させるこ
とも可能である。By the way, such a falling-off prevention member is mounted at a position on the tip side of the shaft portion with respect to the sealing member.
There is a possibility that the falling-off preventing member has a bad effect on the sealing performance between the sealing member and the second member. However, a corrugated washer was used as the sealing member, and the falling-off preventing member was arranged in the internal space of the corrugated washer. In this, the sealing property is maintained as it is without interposition of a falling-off preventing member between the sealing surfaces on both surfaces of the corrugated washer and the two members, and the falling-off preventing member seals between the sealing member and the second member. If so, there is no problem in the above-mentioned sealing performance, and the sealing performance can be further improved.
【0012】以上のシール装置は、第1部材としてのエ
ンジンの燃料噴射弁と、該燃料噴射弁を組み付ける第2
部材としてのシリンダーヘッドの取付孔との間に介装さ
れることで、前記燃料噴射弁に予め接着剤やグリス等を
塗布する煩雑な工程を省略しつつ、燃料噴射弁を取付孔
に組み付ける際の前記シール装置の脱落が確実に防止さ
れ、組み付け作業の効率は著しく向上する。[0012] The above-described sealing device comprises a fuel injection valve of an engine as a first member and a second fuel injection valve for assembling the fuel injection valve.
By being interposed between the mounting hole of the cylinder head as a member, when the fuel injection valve is assembled to the mounting hole, a complicated process of applying an adhesive, grease, or the like to the fuel injection valve in advance is omitted. Of the sealing device is reliably prevented, and the efficiency of the assembling operation is significantly improved.
【0013】[0013]
【発明の実施の形態】次に、本発明の実施形態を添付図
面に基づき詳細に説明する。本発明に係るシール装置
は、第1部材の軸部が第2部材の軸孔に嵌合して組み合
わされる2部材の対向面間に介装され、両対向面間をシ
ールするシール部材を備えたシール装置であって、前記
シール部材に対して軸部の外周面に圧接される機能を付
加し、前記軸部に予め接着剤やグリス等を塗布するまで
もなく、部材の組み付けの際、外装したシール部材を軸
部から脱落させることなく摩擦係止させ、確実に保持す
ることを要旨としている。尚、以下の実施形態において
は、前記第1部材として筒内燃料直接噴射式エンジンの
燃料噴射弁、軸部として前記燃料噴射弁のノズル部、第
2部材として前記エンジンのシリンダーヘッド、軸孔と
して前記シリンダーヘッドに設けた取付孔のノズル孔、
シール部材として前記燃料噴射弁とシリンダーヘッドの
間に介装されるコルゲートワッシャを適用した例につい
て述べるが、本発明は何らこの適用例に限定されるもの
ではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The seal device according to the present invention includes a seal member that is interposed between the opposing surfaces of the two members that are combined by fitting the shaft of the first member into the shaft hole of the second member, and seals between the opposing surfaces. A sealing device, which adds a function of being pressed against the outer peripheral surface of a shaft portion with respect to the seal member, without applying an adhesive or grease to the shaft portion in advance, when assembling the member, The gist of the present invention is to secure the exterior sealing member by frictional engagement without falling off from the shaft portion, and to securely hold the sealing member. In the following embodiments, a fuel injection valve of an in-cylinder fuel direct injection engine is used as the first member, a nozzle portion of the fuel injection valve is used as a shaft, a cylinder head of the engine is used as a second member, and a shaft hole is used as a shaft member. Nozzle holes of mounting holes provided in the cylinder head,
An example in which a corrugated washer interposed between the fuel injection valve and the cylinder head is applied as a seal member will be described, but the present invention is not limited to this application example.
【0014】図1〜図6は本発明の第1実施形態、図7
〜図10は第2実施形態、図11〜図13は第3実施形
態を示し、図中符号1はシール装置、2はコルゲートワ
ッシャをそれぞれ示している。FIGS. 1 to 6 show a first embodiment of the present invention, and FIGS.
10 to 13 show a second embodiment, and FIGS. 11 to 13 show a third embodiment. In the drawings, reference numeral 1 denotes a sealing device, and reference numeral 2 denotes a corrugated washer.
【0015】先ず、本発明の第1実施形態を図1〜6に
基づいて説明する。図1は、シリンダーヘッド3におけ
る燃焼室4に開口する取付孔5に、電磁式の燃料噴射弁
6を組み付けた状態を示す全体構成図であり、当該燃料
噴射弁6先端のノズル部7には、燃料噴射弁6とシリン
ダーヘッド3の間を気密状にシールするシール装置1が
介装されている。前記シール装置1は上下両面にシール
面を有するコルゲートワッシャ2を備え、該コルゲート
ワッシャ2は、燃料噴射弁6を取付ける際の取付具8の
押圧力により、取付フランジ9がシリンダーヘッド3に
当接するまで軸方向に弾性圧縮され、この圧縮に対する
弾性復元力によって高圧燃焼ガスの作用する前記燃料噴
射弁6とシリンダーヘッド3の間を確実にシールしてい
る。First, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram showing a state in which an electromagnetic fuel injection valve 6 is assembled to a mounting hole 5 opening to a combustion chamber 4 in a cylinder head 3. A sealing device 1 for sealing the space between the fuel injection valve 6 and the cylinder head 3 in an airtight manner is provided. The sealing device 1 includes a corrugated washer 2 having a sealing surface on both upper and lower surfaces. The corrugated washer 2 has a mounting flange 9 abutting on the cylinder head 3 by a pressing force of a mounting tool 8 when the fuel injection valve 6 is mounted. The cylinder head 3 is securely sealed between the fuel injection valve 6 and the cylinder head 3 on which high-pressure combustion gas acts due to the elastic restoring force against the compression.
【0016】図2(a)及び(b)は、シール装置1を
前記燃料噴射弁6のノズル部7に装着した状態を示す説
明図、図3はシール装置1の平面図を示している。即
ち、前記シール装置1は、燃料噴射弁6のノズル部7が
シリンダーヘッド3の取付孔5におけるノズル孔51に
嵌合して組み合わされる筒内燃料直接噴射式エンジンに
おける前記燃料噴射弁6及びシリンダーヘッド3の座面
61、31間に介装されて両対向面間をシールするコル
ゲートワッシャ2を備え、前記コルゲートワッシャ2の
少なくとも内周面21の一部又は全体には、弾力変形に
よりノズル部7の外周面71に圧接される摩擦圧接部1
0が一体的に形成されている。そして、図2(a)に示
すように、前記摩擦圧接部10が前記外周面71に摩擦
圧接面10aを介して圧着、係止されることで、ノズル
部7に接着剤やグリス等を塗布しなくても、当該コルゲ
ートワッシャ2は前記外周面71上に安定して保持さ
れ、ロボットによる自動化された組み付け工程において
も、当該ノズル部7からの脱落が確実に防止されるので
ある。FIGS. 2A and 2B are explanatory views showing a state where the sealing device 1 is mounted on the nozzle portion 7 of the fuel injection valve 6, and FIG. 3 is a plan view of the sealing device 1. That is, the sealing device 1 includes the fuel injection valve 6 and the cylinder in the in-cylinder direct fuel injection engine in which the nozzle portion 7 of the fuel injection valve 6 is fitted and combined with the nozzle hole 51 of the mounting hole 5 of the cylinder head 3. The corrugated washer 2 is interposed between the seating surfaces 61 and 31 of the head 3 and seals between the opposing surfaces. At least a part or the entire inner peripheral surface 21 of the corrugated washer 2 is provided with a nozzle portion by elastic deformation. Friction welded part 1 pressed against outer peripheral surface 71 of
0 are integrally formed. Then, as shown in FIG. 2A, the friction pressure contact portion 10 is pressed and locked to the outer peripheral surface 71 via the friction pressure contact surface 10a, so that an adhesive or grease is applied to the nozzle portion 7. Even if this is not done, the corrugated washer 2 is stably held on the outer peripheral surface 71, and even in an automated assembly process by a robot, the corrugated washer 2 is reliably prevented from falling off from the nozzle portion 7.
【0017】前記摩擦圧接部10は、当該コルゲートワ
ッシャ2の内部空間22内に突出され、コルゲートワッ
シャ2両端のシール面23、24と前記燃料噴射弁の座
面61及びシリンダーヘッド座面31との間には、図2
(b)に示すように前記摩擦圧接部10が介在すること
はなく、したがって前記コルゲートワッシャ2と座面6
1、31間のシール性は良好に維持されている。The friction welding portion 10 projects into the internal space 22 of the corrugated washer 2 and is formed between the sealing surfaces 23 and 24 at both ends of the corrugated washer 2 and the seat surface 61 and the cylinder head seat surface 31 of the fuel injection valve. In between, Figure 2
As shown in (b), the friction pressure contact portion 10 does not intervene, and therefore, the corrugated washer 2 and the seat surface 6
The sealing property between 1 and 31 is well maintained.
【0018】以下、シール装置1について更に詳細に説
明する。本実施形態のシール装置1は、コルゲートワッ
シャ2とその内部空間22に臨む内周下縁部25から突
出してノズル部7に圧接される摩擦圧接部10とから構
成されている。前記コルゲートワッシャ2は、断面波型
形状若しくは軸方向に段差を有するステップ状の弾性変
形部を有し、且つ上下両面にはシール面23、24を備
えた金属製の部材からなり、前記摩擦圧接部10は、前
記内周下縁部25にコーティングで一体成形された合成
ゴムなどの弾性体、又はポリエチレンゲルやシリコンゲ
ルなどを基材に硬化剤、粘着付与剤等を添加してなる粘
弾性体で構成されている。前記摩擦圧接部10の内径
は、ノズル部7の外径7Dと略一致又はそれ以下に設定
され、弾性復元力や粘性により外周面71に圧着されて
いる。尚、前記摩擦圧接部10は、図3に示す如く、コ
ルゲートワッシャ2の全周にわたって突出形成されてい
るが、その他、例えば図4に示すように前記ノズル部7
に圧接される複数の突起部11を形成してなるものも好
ましい。但し、この場合には前記摩擦圧接部10全体の
強度を維持するためにも、前記複数の突起部11の基端
側は全周にわたって連続して形成されていることが好ま
しい。Hereinafter, the sealing device 1 will be described in more detail. The seal device 1 according to the present embodiment includes a corrugated washer 2 and a friction pressure contact portion 10 protruding from an inner peripheral lower edge portion 25 facing the internal space 22 and pressed against the nozzle portion 7. The corrugated washer 2 has a corrugated cross section or a step-like elastically deforming portion having a step in the axial direction, and is made of a metal member having sealing surfaces 23 and 24 on both upper and lower surfaces. The part 10 is made of an elastic body such as synthetic rubber integrally formed on the inner peripheral lower edge part 25 by coating, or a viscoelastic material obtained by adding a hardener, a tackifier and the like to a base material such as polyethylene gel or silicon gel. It consists of a body. The inner diameter of the friction welding portion 10 is set substantially equal to or less than the outer diameter 7D of the nozzle portion 7, and is pressed against the outer peripheral surface 71 by elastic restoring force or viscosity. Incidentally, the friction welding portion 10 is formed so as to protrude over the entire circumference of the corrugated washer 2 as shown in FIG. 3, but other than that, for example, as shown in FIG.
It is also preferable that a plurality of protrusions 11 are formed so as to be pressed against the surface. However, in this case, in order to maintain the strength of the entire friction welding portion 10, it is preferable that the base end sides of the plurality of protrusions 11 are formed continuously over the entire circumference.
【0019】また、前記弾性体又は粘弾性体等からなる
前記摩擦圧接部10が高温高圧に耐え得るシール性を備
える場合には、例えば図5(a)、(b)に示すよう
に、前記摩擦圧接部10をコルゲートワッシャ2の表面
全体にコーティングしたものや、図6(a)、(b)に
示すようにコルゲートワッシャ2の内周面21全体を囲
む形でコーティングしたものも好ましく、さらには前記
内周面全体を囲む形に別体成形した摩擦圧接部を当該内
周面に着脱可能に嵌着したものや、同じく別体成形した
摩擦圧接部を前記内周面に接着剤で接着してなるものも
好ましい。In the case where the friction welding portion 10 made of the elastic body or the viscoelastic body has a sealing property capable of withstanding high temperature and high pressure, for example, as shown in FIGS. It is preferable that the friction welding portion 10 is coated on the entire surface of the corrugated washer 2 or that the friction welding portion 10 is coated so as to surround the entire inner peripheral surface 21 of the corrugated washer 2 as shown in FIGS. 6 (a) and 6 (b). Is formed by detachably attaching a separately formed friction welding portion to the inner peripheral surface so as to surround the entire inner peripheral surface, or by bonding the separately molded friction welding portion to the inner peripheral surface with an adhesive. What is obtained is also preferable.
【0020】次に、本発明の第2実施形態を図7〜図1
0に基づいて説明する。本実施形態のシール装置1A
は、燃料噴射弁6のノズル部7がシリンダーヘッド3の
取付孔5のノズル孔51に嵌合して組み合わされる筒内
燃料直接噴射式エンジンにおける前記燃料噴射弁6及び
シリンダーヘッド3の対向面間、即ち座面61、31間
に介装され、両座面間をシールするコルゲートワッシャ
2を備えるとともに、前記ノズル部7に外装される前記
コルゲートワッシャ2とは別体で構成され且つ該コルゲ
ートワッシャ2に対しノズル部7の先端側の位置に外装
される脱落防止部材12Aを設け、当該脱落防止部材1
2Aの少なくとも内周面13の一部又は全体には、弾力
変形によりノズルの外周面71に圧接される摩擦圧接部
14が一体的に形成されている。そして、図7(a)に
示す如く、ノズル部7におけるコルゲートワッシャ2よ
りも先端側に前記脱落防止部材12Aが圧着されること
により、当該コルゲートワッシャ2は軸部先端方向への
移動が衝止され、前記ノズル部7の外周面71上に脱落
することなく安定して保持されるのである。Next, a second embodiment of the present invention will be described with reference to FIGS.
Description will be made based on 0. Sealing device 1A of the present embodiment
In the in-cylinder direct fuel injection engine in which the nozzle portion 7 of the fuel injection valve 6 is fitted into the nozzle hole 51 of the mounting hole 5 of the cylinder head 3 and combined, the distance between the opposed surfaces of the fuel injection valve 6 and the cylinder head 3 That is, the corrugated washer 2 is interposed between the seating surfaces 61 and 31 and seals between the two seating surfaces. The corrugated washer 2 is formed separately from the corrugated washer 2 provided on the nozzle portion 7 and is formed separately. 2 is provided with a falling-off preventing member 12A which is provided at a position on the tip side of the nozzle portion 7;
At least a part or the whole of the inner peripheral surface 13 of the 2A is integrally formed with a friction pressure contact portion 14 which is pressed against the outer peripheral surface 71 of the nozzle by elastic deformation. Then, as shown in FIG. 7 (a), the stopper member 12A is crimped to the tip end side of the corrugated washer 2 in the nozzle portion 7, so that the corrugated washer 2 is stopped from moving in the tip end direction of the shaft portion. Thus, the nozzle portion 7 is stably held without dropping on the outer peripheral surface 71 of the nozzle portion 7.
【0021】別体構成した前記脱落防止部材12Aは、
少なくともコルゲートワッシャ2の内部空間22内に配
置されることを目的として、その外径寸法及び厚み寸法
が適宜設定されているため、コルゲートワッシャ2両端
のシール面23、24と前記燃料噴射弁6の座面61及
びシリンダーヘッド座面31との間に前記脱落防止部材
12Aが介在することはなく、図7(b)に示すように
前記コルゲートワッシャ2による両部材間のシール性は
良好に維持される。The falling-off preventing member 12A, which is formed separately,
The outer diameter and the thickness of the corrugated washer 2 are appropriately set at least for the purpose of being disposed in the internal space 22 of the corrugated washer 2. The drop-off preventing member 12A does not intervene between the seating surface 61 and the cylinder head seating surface 31, and as shown in FIG. 7 (b), the sealability between the two members by the corrugated washer 2 is maintained well. You.
【0022】本実施形態のシール装置1Aは、コルゲー
トワッシャ2と、当該ワッシャとは別体の脱落防止部材
12Aとから構成され、前記脱落防止部材12Aは、図
8に示す如く、例えば紙素材からなるシート状部材で構
成され且つその内周部における周方向に沿った一定間隔
おきには、内方へ突出する複数の突起15aを設けた摩
擦圧接部14が形成されている。脱落防止部材12Aの
素材や紙厚、突起15aの突出寸法等は、摩擦圧接部1
4にコルゲートワッシャの脱落を防止する充分な圧接強
度が生じる得るよう、適宜設定され、前記突起15aの
各頂部を結ぶ最小内径12dは、前記紙厚や突起15a
の突出寸法等に基づいて適宜ノズル部7の外径7Dと略
一致又はそれ以下の値に設定される。例えば、紙厚0.
1〜1.0mmでその内周部に4つ設けた突起の各突出
寸法が0.05〜0.5mmである脱落防止部材を、外
径7Dが7.0〜8.0mmであるノズル部に外装し、
質量400mgのコルゲートワッシャを略鉛直方向に支
持する場合には、前記内径12dは、好ましくは前記7
Dよりも0.2mm以下縮径した値、さらに好ましくは
0.1mm以下縮径した値に設定できる。尚、脱落防止
部材12Aを形成する前記紙素材としては、アラミド紙
やカーボン紙、グラスファイバー含有紙などが好適に用
いられ、特に耐熱性の点ではアラミド紙を用いることが
好ましい。また、紙素材を用いる代わりに合成樹脂や合
成ゴム、金属材料等を用いて前記シート状部材を形成し
ても良い。The sealing device 1A of this embodiment comprises a corrugated washer 2 and a falling-off preventing member 12A separate from the washer. The falling-off preventing member 12A is made of, for example, a paper material as shown in FIG. A friction pressure contact portion 14 having a plurality of protrusions 15a protruding inward is formed at regular intervals along a circumferential direction in an inner peripheral portion of the sheet-like member. The material and paper thickness of the falling-off prevention member 12A, the projection size of the projection 15a, etc.
4, a minimum inner diameter 12d connecting the tops of the projections 15a is appropriately set so as to obtain a sufficient pressure contact strength for preventing the corrugated washer from falling off.
The diameter is appropriately set to a value substantially equal to or less than the outer diameter 7D of the nozzle portion 7 based on the protrusion dimension of the nozzle portion 7 or the like. For example, if the paper thickness is 0.
A drop-out preventing member having a projection diameter of 0.05 to 0.5 mm and a protrusion having an outer diameter 7D of 7.0 to 8.0 mm. Exterior,
When supporting a corrugated washer having a mass of 400 mg in a substantially vertical direction, the inner diameter 12 d is preferably 7 mm.
The diameter can be set to a value reduced by 0.2 mm or less from D, more preferably to a value reduced by 0.1 mm or less. Aramid paper, carbon paper, glass fiber-containing paper, or the like is suitably used as the paper material forming the falling-off preventing member 12A, and it is preferable to use aramid paper from the viewpoint of heat resistance. Further, instead of using a paper material, the sheet-like member may be formed using a synthetic resin, a synthetic rubber, a metal material, or the like.
【0023】また、前記摩擦圧接部14は、上記のよう
な複数の突起15aを設けたものに限定されるものでは
なく、図9に示すように脱落防止部材12Aの内周部に
おける周方向に沿った一定間隔おきに複数の切り込み1
5bを形成してなるものも好ましい実施例である。この
場合、脱落防止部材12Aの内径12dは、紙厚や切り
込み深さ等に基づいて適宜ノズル部7の外径7Dと略一
致又はそれ以下の値に設定され、例えば、紙厚0.1〜
1.0mmで10以上設けた各切り込み15bの深さが
0.1〜1.0mmである脱落防止部材を、外径7Dが
7.0〜8.0mmであるノズル部に外装し、質量約4
00mgのコルゲートワッシャを略鉛直方向に支持する
場合、前記内径12dは、好ましくは前記7Dよりも
0.2mm以下縮径した値、さらに好ましくは0.1m
m以下縮径した値に設定できる。Further, the friction pressure contact portion 14 is not limited to the one provided with the plurality of protrusions 15a as described above, but may extend in the circumferential direction of the inner peripheral portion of the falling-off preventing member 12A as shown in FIG. Multiple cuts 1 at regular intervals along
5b is also a preferred embodiment. In this case, the inner diameter 12d of the falling-off prevention member 12A is appropriately set to a value substantially equal to or less than the outer diameter 7D of the nozzle portion 7 based on the paper thickness, the cutting depth, and the like.
A drop-off preventing member having a depth of 0.1 to 1.0 mm and a depth of each cut 15b provided at 10 or more of 1.0 mm is provided on a nozzle having an outer diameter 7D of 7.0 to 8.0 mm, and has a mass of about 4
When supporting a 00 mg corrugated washer in a substantially vertical direction, the inner diameter 12d is preferably a value smaller than the 7D by 0.2 mm or less, more preferably 0.1 m.
It can be set to a value reduced in diameter by m or less.
【0024】以上示した脱落防止部材12Aは、前記コ
ルゲートワッシャ2と別体で構成されているが、他の例
として図10に示す如く、ノズル部7への装着や部品管
理等をさらに容易にするために、接着剤等の接着手段1
6を用いて脱落防止部材12Aをコルゲートワッシャ2
の当接部位17に接着したものも好ましい。ここで、前
記接着手段の他の態様としては例えばプレス圧着法や当
該脱落防止部材を接着材料により一部埋め込んでなる埋
め込み式であっても良い。The above-mentioned falling-off preventing member 12A is formed separately from the corrugated washer 2, but as another example, as shown in FIG. In order to do this, the bonding means 1 such as an adhesive
6 to remove the fall-off prevention member 12A from the corrugated washer 2
The one bonded to the contact portion 17 is also preferable. Here, as another mode of the bonding means, for example, a press-bonding method or an embedded type in which the falling-off preventing member is partially embedded with an adhesive material may be used.
【0025】次に、本発明の第3実施形態を図11〜図
13に基づいて説明する。本実施形態のシール装置1B
は、上記第2実施形態と同様、上下両面にシール面を有
するコルゲートワッシャ2と、これを衝止する別体の脱
落防止部材12Bとから構成され、前記脱落防止部材1
2Bの外径はコルゲートワッシャ2と略一致又はそれ以
上に設定され且つ少なくともその下面にはシリンダーヘ
ッド座面31との間を気密状にシールするシール面19
が形成されている。前記脱落防止部材12Bは具体的に
は、図12にも示す如く、ノズル部7に遊嵌される平板
状の金属製ワッシャ20とその下面及び内周面を被覆し
てなる合成ゴム層26とから構成され、該合成ゴム層2
6によって前記シール面19及び摩擦圧接部27が形成
されている。シール面19は、上述の如く、弾性変形可
能な弾性体や粘弾性体等からなるため、前記シリンダー
ヘッド座面31の鋳巣対策として効果的であり、一方摩
擦圧接部27の内径27dは、上述の第1実施形態の場
合と同様に、ノズル部の外径7Dに略一致又はそれ以下
の値に設定され、前記弾性体や粘弾性体等の弾性復元力
や粘着力によりノズル部7の外周面71に圧着されてい
る。また、ワッシャ20の内周部には、図12(a)に
示す如く、複数の突起28が形成され、当該ワッシャと
合成ゴム層26との密着強度を高めている。Next, a third embodiment of the present invention will be described with reference to FIGS. Sealing device 1B of the present embodiment
Is composed of a corrugated washer 2 having sealing surfaces on both upper and lower surfaces, and a separate falling-off preventing member 12B for stopping the same, as in the second embodiment.
The outer diameter of 2B is set to be substantially equal to or larger than that of the corrugated washer 2, and at least the lower surface thereof has a sealing surface 19 for hermetically sealing the gap with the cylinder head seating surface 31.
Are formed. Specifically, as shown in FIG. 12, the drop-off preventing member 12B has a flat metal washer 20 loosely fitted to the nozzle portion 7 and a synthetic rubber layer 26 covering the lower surface and the inner peripheral surface thereof. The synthetic rubber layer 2
6, the seal surface 19 and the friction pressure contact portion 27 are formed. As described above, since the sealing surface 19 is made of an elastic body or a viscoelastic body that can be elastically deformed, the sealing surface 19 is effective as a measure against a cavity in the cylinder head seat surface 31, while the inner diameter 27d of the friction welding portion 27 is As in the case of the first embodiment described above, the outer diameter 7D of the nozzle portion is set to a value substantially equal to or less than the outer diameter 7D, and the elastic member or the viscoelastic member or the like has an elastic restoring force or an adhesive force. It is crimped to the outer peripheral surface 71. Further, as shown in FIG. 12A, a plurality of protrusions 28 are formed on the inner peripheral portion of the washer 20 to increase the adhesion strength between the washer and the synthetic rubber layer 26.
【0026】ここで、図13に示す如く、前記合成ゴム
層26を金属製ワッシャ20の上面にも被覆した脱落防
止部材12Bを用いれば、コルゲートワッシャ2の下面
にはシール面の形成が不要となり、製造コストを大幅に
削減できる。Here, as shown in FIG. 13, the use of the falling-off preventing member 12B in which the synthetic rubber layer 26 also covers the upper surface of the metal washer 20 makes it unnecessary to form a sealing surface on the lower surface of the corrugated washer 2. In addition, manufacturing costs can be significantly reduced.
【0027】尚、同様の趣旨のものとして、上記脱落防
止部材12Bの代わりに、芯材として金属シートを複数
重ねた基体に合成樹脂や鉛を被覆したものや、芳香族ポ
リアミド繊維と合成樹脂からなるもの、膨張黒鉛をシー
ト状にしたもの等を使用するとともに、当該芯材の少な
くとも内周面に合成ゴム等の弾性体又は粘弾性体を被覆
してなるものも、好適に採用できる。For the same purpose, instead of the above-mentioned falling-off preventing member 12B, a base material in which a plurality of metal sheets are stacked as a core material and coated with synthetic resin or lead, or an aromatic polyamide fiber and synthetic resin are used. In addition, a material obtained by forming an expanded graphite into a sheet shape or the like and having at least the inner peripheral surface of the core material covered with an elastic material such as synthetic rubber or a viscoelastic material can be suitably used.
【0028】以上の如き本発明のシール装置1を用いれ
ば、ノズル部7に予め接着剤やグリス等を塗布しておく
といった煩雑な工程を省略しつつ、コルゲートワッシャ
2を外装したノズル部7をシリンダーヘッド3の取付孔
5に組み付ける際における前記コルゲートワッシャ2の
脱落が確実に防止され、組み付け作業の効率が著しく向
上するのである。With the use of the sealing device 1 of the present invention as described above, the nozzle 7 having the corrugated washer 2 can be removed while eliminating the complicated steps of applying an adhesive, grease or the like to the nozzle 7 in advance. The corrugated washer 2 is reliably prevented from falling off when the cylinder head 3 is mounted on the mounting hole 5, and the efficiency of the mounting operation is significantly improved.
【0029】[0029]
【発明の効果】以上にしてなる本発明によれば、以下の
効果を奏する。According to the present invention described above, the following effects can be obtained.
【0030】即ち、第1部材の軸部が第2部材の軸孔に
嵌合して組み合わされる2部材の対向面間に介装され、
両対向面間をシールするシール部材を備えたシール装置
であって、前記軸部に外装されるシール部材の少なくと
も内周面の一部又は全部に、弾力変形により軸部の外周
面に圧接される摩擦圧接部を一体的に形成してなる脱落
防止機能付きシール装置によれば、前記軸部に予め接着
剤やグリス等を塗布することなく当該シール装置の脱落
を確実に防止でき、前記2部材の組み付けの際には摩擦
圧接部と軸部間の摩擦抵抗よりも大きな力で軸孔に挿通
することで、軸部外周面上を軸方向に移動させ、軸部の
適正な位置までスムーズに移動させることができる。That is, the shaft portion of the first member is interposed between the opposing surfaces of the two members fitted and combined with the shaft hole of the second member,
A seal device provided with a seal member for sealing between both opposing surfaces, wherein at least a part or all of an inner peripheral surface of a seal member provided on the shaft portion is pressed against an outer peripheral surface of the shaft portion by elastic deformation. According to the sealing device with a falling-off preventing function integrally formed with the friction pressure contact portion, the falling-off of the sealing device can be reliably prevented without applying an adhesive, grease, or the like to the shaft portion in advance. When assembling the members, the shaft is moved in the axial direction on the outer peripheral surface of the shaft by inserting it into the shaft hole with a force greater than the frictional resistance between the friction welding part and the shaft, so that it can be smoothly moved to the proper position of the shaft Can be moved.
【0031】シール部材としてコルゲートワッシャを用
い、摩擦圧接部を前記コルゲートワッシャの内部空間側
へ突出してなるシール装置によれば、コルゲートワッシ
ャ両端のシール面と前記2部材との間に前記摩擦圧接部
が介在しないので、前記コルゲートワッシャのシール性
を維持したまま軸部に圧着できる。According to the sealing device using a corrugated washer as a sealing member and projecting a friction pressure contact portion toward the inner space side of the corrugated washer, the friction pressure contact portion is provided between the sealing surfaces at both ends of the corrugated washer and the two members. Since the corrugated washer does not intervene, the corrugated washer can be pressure-bonded to the shaft while maintaining the sealing property.
【0032】第1部材の軸部が第2部材の軸孔に嵌合し
て組み合わされる2部材の対向面間に介装され、両対向
面間をシールするシール部材を備えたシール装置であっ
て、前記軸部に外装されるシール部材とは別体で構成さ
れ、該シール部材に対して軸部先端側の位置に外装され
る脱落防止部材を設け、該脱落防止部材の少なくとも内
周面の一部又は全部に弾力変形により軸部の外周面に圧
接する摩擦圧接部を一体的に形成してなる脱落防止機能
付きシール装置によれば、脱落防止部材により前記シー
ル部材の軸部先端方向への移動が衝止され、該シール部
材を前記軸部に対し脱落不能に支持でき、軸部外周面上
を軸方向に移動させ、軸部の適正な位置までスムーズに
移動させることができる。[0032] A sealing device comprising a seal member interposed between the opposing surfaces of the two members, the shaft of the first member being fitted into the shaft hole of the second member and being combined, and sealing between the opposing surfaces. A sealing member provided separately from the seal member provided on the shaft portion, and a falling-off prevention member provided on the shaft member at a position on the tip end side of the sealing member; and at least an inner peripheral surface of the falling-off prevention member. According to the sealing device with a drop-preventing function in which a part or the whole thereof is integrally formed with a friction pressure contact portion that presses against the outer peripheral surface of the shaft portion by elastic deformation, the drop-preventing member directs the tip of the shaft portion of the seal member. , The seal member can be undetachably supported on the shaft portion, and can be moved in the axial direction on the outer peripheral surface of the shaft portion to smoothly move to an appropriate position of the shaft portion.
【0033】脱落防止部材としてシート状の部材を用い
且つその内周部に内方へ突出する摩擦圧接部を形成した
ものや、同じくシート状部材の内周部に複数の切り込み
を入れた摩擦圧接部を形成したものにあっては、シート
状部材からなる脱落防止部材を軸部に圧着させることで
前記シール部材の脱落を防止できる。[0033] A sheet-like member is used as a fall-preventing member, and a friction-welding portion protruding inward is formed on the inner periphery thereof, or a friction-welding member having a plurality of cuts formed in the inner periphery of the sheet-like member. In the case where the sealing member is formed, the sealing member can be prevented from falling off by pressing the stopper member made of a sheet-like member against the shaft portion.
【0034】脱落防止部材をシール部材に接着して一体
化すれば、当該シール装置の軸部への組み付けが容易に
なる。If the falling-off preventing member is bonded to and integrated with the sealing member, the sealing device can be easily assembled to the shaft.
【0035】シール部材としてコルゲートワッシャを用
い且つ脱落防止部材を前記コルゲートワッシャの内部空
間内に配置させたシール装置によれば、前記コルゲート
ワッシャ両端のシール面と前記2部材との間に脱落防止
部材が介在しないので、前記コルゲートワッシャと第2
部材との間のシール性を維持できる。According to the sealing device in which the corrugated washer is used as the sealing member and the falling-off preventing member is arranged in the internal space of the corrugated washer, the falling-off preventing member is provided between the sealing surfaces at both ends of the corrugated washer and the two members. Does not intervene, the corrugated washer and the second
It is possible to maintain the sealing property with the member.
【0036】脱落防止部材がシール部材と第2部材間を
シールするものでは、シール性を更に向上することが可
能である。When the falling-off prevention member seals between the sealing member and the second member, the sealing performance can be further improved.
【0037】以上のシール装置を、エンジンの燃料噴射
弁と燃焼室に開口する取付孔との間に介装するシール部
材として用いれば、前記燃料噴射弁に予め接着剤やグリ
ス等を塗布しておくといった煩雑な工程を省略しつつ、
当該シール装置を外装した燃料噴射弁を前記取付孔に組
み付ける際における前記シール装置の脱落が確実に防止
でき、組み付け作業の効率が著しく向上する。If the above sealing device is used as a sealing member interposed between a fuel injection valve of an engine and a mounting hole opened in a combustion chamber, an adhesive or grease is applied to the fuel injection valve in advance. While omitting complicated steps such as
When the fuel injection valve equipped with the sealing device is mounted on the mounting hole, the sealing device can be reliably prevented from falling off, and the efficiency of the mounting operation is significantly improved.
【図1】本発明に係るシール装置をエンジンの燃料噴射
弁とシリンダーヘッドの間に介装した状態を示す全体構
成図。FIG. 1 is an overall configuration diagram showing a state in which a seal device according to the present invention is interposed between a fuel injection valve of an engine and a cylinder head.
【図2】(a)は、本発明の第1実施形態に係るシール
装置を燃料噴射弁先端のノズル部に外装した状態を示す
説明図。(b)は、同じく第1実施形態に係るシール装
置を燃料噴射弁とシリンダーヘッドの間に介装した状態
を示す説明図。FIG. 2A is an explanatory view showing a state in which the sealing device according to the first embodiment of the present invention is externally mounted on a nozzle portion at a tip end of a fuel injection valve. (B) is an explanatory view showing a state where the sealing device according to the first embodiment is interposed between the fuel injection valve and the cylinder head.
【図3】同じく第1実施形態に係るシール装置を示す説
明図。FIG. 3 is an explanatory view showing a sealing device according to the first embodiment.
【図4】第1実施形態に係るシール装置の変形例を示す
説明図。FIG. 4 is an explanatory view showing a modified example of the sealing device according to the first embodiment.
【図5】(a)は、第1実施形態に係るシール装置の他
の変形例を示す平面図。(b)は、同じく断面図。FIG. 5A is a plan view showing another modification of the sealing device according to the first embodiment. (B) is sectional drawing similarly.
【図6】(a)は、第1実施形態に係るシール装置の更
に他の変形例を示す平面図。(b)は、同じく断面図。FIG. 6A is a plan view illustrating still another modified example of the sealing device according to the first embodiment. (B) is sectional drawing similarly.
【図7】(a)は、本発明の第2実施形態に係るシール
装置を燃料噴射弁先端のノズル部に外装した状態を示す
説明図。(b)は、同じく第2実施形態に係るシール装
置を燃料噴射弁とシリンダーヘッドの間に介装した状態
を示す説明図。FIG. 7A is an explanatory view showing a state in which a sealing device according to a second embodiment of the present invention is externally mounted on a nozzle portion at a tip end of a fuel injection valve. (B) is an explanatory view showing a state in which the sealing device according to the second embodiment is interposed between a fuel injection valve and a cylinder head.
【図8】同じく第2実施形態に係るシール装置における
脱落防止部材を示す説明図。FIG. 8 is an explanatory view showing a falling-off prevention member in the sealing device according to the second embodiment.
【図9】前記脱落防止部材の変形例を示す説明図。FIG. 9 is an explanatory view showing a modified example of the drop-off preventing member.
【図10】第2実施形態に係るシール装置の変形例を示
す説明図。FIG. 10 is an explanatory view showing a modified example of the sealing device according to the second embodiment.
【図11】本発明の第3実施形態に係るシール装置を燃
料噴射弁先端のノズル部に外装した状態を示す説明図。FIG. 11 is an explanatory view showing a state in which a seal device according to a third embodiment of the present invention is provided on a nozzle portion at a tip end of a fuel injection valve.
【図12】(a)は、同じく第3実施形態に係るシール
装置における脱落防止部材を示す平面図。(b)は、同
じく断面図。FIG. 12A is a plan view showing a falling-off preventing member in a sealing device according to a third embodiment. (B) is sectional drawing similarly.
【図13】第3実施形態に係るシール装置の変形例を示
す説明図。FIG. 13 is an explanatory view showing a modification of the sealing device according to the third embodiment.
【図14】燃料噴射式エンジンにおける燃料噴射弁の組
み付け構造を示す説明図。FIG. 14 is an explanatory view showing an assembly structure of a fuel injection valve in a fuel injection engine.
1、1A、1B シール装置 2 コルゲートワッシャ 3 シリンダーヘッド 4 燃焼室 5 取付孔 6 燃料噴射弁 7 ノズル部 7D 外径 8 取付具 9 取付フランジ 10 摩擦圧接部 10a 摩擦圧接面 10d 内径 11 突起部 12A、12B 脱落防止部材 12d 内径 13 内周面 14 摩擦圧接部 15a 突起 15b 切り込み 16 接着手段 17 当接部位 18 シール面 19 シール面 20 ワッシャ 21 内周面 22 内部空間 23 シール面 24 シール面 25 内周下縁部 26 合成ゴム層 27 摩擦圧接部 27a 摩擦圧接面 27d 内径 28 突起 31 座面 51 ノズル孔 61 座面 71 外周面 100 燃料噴射弁 101 シリンダーヘッド 102 燃焼室 103 取付孔 104 ノズル部 105 コルゲートワッシャ 106 取付具 107 取付フランジ DESCRIPTION OF SYMBOLS 1, 1A, 1B Sealing device 2 Corrugated washer 3 Cylinder head 4 Combustion chamber 5 Mounting hole 6 Fuel injection valve 7 Nozzle part 7D Outer diameter 8 Mounting tool 9 Mounting flange 10 Friction pressure contact part 10a Friction pressure contact face 10d Inner diameter 11 Projection part 12A 12B Drop-off prevention member 12d Inner diameter 13 Inner peripheral surface 14 Friction contact portion 15a Projection 15b Cut 16 Adhesion means 17 Contact portion 18 Seal surface 19 Seal surface 20 Washer 21 Inner peripheral surface 22 Internal space 23 Seal surface 24 Seal surface 25 Inner periphery Edge 26 Synthetic rubber layer 27 Friction pressure contact portion 27a Friction pressure contact surface 27d Inner diameter 28 Projection 31 Seat surface 51 Nozzle hole 61 Seat surface 71 Outer peripheral surface 100 Fuel injection valve 101 Cylinder head 102 Combustion chamber 103 Mounting hole 104 Nozzle portion 105 Corrugate washer 106 Mounting fixture 107 Flange
───────────────────────────────────────────────────── フロントページの続き (72)発明者 原田 武 大阪府豊中市走井2丁目6番5号 国産部 品工業株式会社内 Fターム(参考) 3G066 AA02 AB02 AD12 BA00 BA31 BA56 BA65 CC01 CD04 CD10 3J034 AA04 BA06 BD02 BD04 CA01 3J040 AA01 EA01 FA06 FA11 FA13 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takeshi Harada 2-6-5, Nobori, Toyonaka-shi, Osaka F-term (reference) in Domestic Products Dept. Industry Co., Ltd. 3G066 AA02 AB02 AD12 BA00 BA31 BA56 BA65 CC01 CD04 CD10 3J034 AA04 BA06 BD02 BD04 CA01 3J040 AA01 EA01 FA06 FA11 FA13
Claims (9)
して組み合わされる2部材の対向面間に介装され、両対
向面間をシールするシール部材を備えたシール装置であ
って、前記軸部に外装されるシール部材の少なくとも内
周面の一部又は全部に、弾力変形により軸部の外周面に
圧接される摩擦圧接部を一体的に形成してなる脱落防止
機能付きシール装置。1. A sealing device comprising a seal member interposed between two opposing surfaces of a shaft member of a first member fitted into a shaft hole of a second member and combined to seal between the opposing surfaces. Wherein at least a part or the whole of the inner peripheral surface of the seal member provided on the shaft portion is integrally formed with a friction pressure contact portion pressed against the outer peripheral surface of the shaft portion by elastic deformation. Sealing device with function.
ャを用い、摩擦圧接部を前記コルゲートワッシャの内部
空間側へ突出してなる請求項1記載の脱落防止機能付き
シール装置。2. The seal device with a fall-off preventing function according to claim 1, wherein a corrugated washer is used as the seal member, and a friction welding portion projects toward the inner space of the corrugated washer.
して組み合わされる2部材の対向面間に介装され、両対
向面間をシールするシール部材を備えたシール装置であ
って、前記軸部に外装されるシール部材と別体で構成さ
れ、該シール部材に対し軸部先端側の位置に外装される
脱落防止部材を設け、該脱落防止部材の少なくとも内周
面の一部又は全部に弾力変形により軸部の外周面に圧接
する摩擦圧接部を一体的に形成してなる脱落防止機能付
きシール装置。3. A sealing device comprising a seal member interposed between two opposing surfaces of a shaft member of a first member fitted and combined with a shaft hole of a second member to seal between the opposing surfaces. And a detachment prevention member which is formed separately from the seal member provided on the shaft portion and which is provided at a position on the tip end side of the shaft portion with respect to the seal member, wherein at least an inner peripheral surface of the dropout prevention member is provided. A sealing device with a falling-off prevention function, in which a part or the entirety of the shaft is integrally formed with a friction pressure contact portion that presses against the outer peripheral surface of the shaft portion by elastic deformation.
いるとともに、該部材の内周部に内方へ突出する摩擦圧
接部を形成してなる請求項3記載の脱落防止機能付きシ
ール装置。4. The sealing device with a falling-off preventing function according to claim 3, wherein a sheet-like member is used as the falling-off preventing member, and a friction pressure contact portion is formed on an inner peripheral portion of the member so as to protrude inward.
いるとともに、該部材の内周部に複数の切り込みを入れ
た摩擦圧接部を形成してなる請求項3記載の脱落防止機
能付きシール装置。5. The sealing device with a falling-off preventing function according to claim 3, wherein a sheet-like member is used as the falling-off preventing member, and a friction pressure contact portion having a plurality of cuts is formed on an inner peripheral portion of the member.
た請求項3〜5の何れか1項に記載の脱落防止機能付き
シール装置。6. The sealing device with a falling-off preventing function according to claim 3, wherein the falling-off preventing member is adhered to a sealing member.
用い、且つ脱落防止部材を前記コルゲートワッシャの内
部空間内に配置させた請求項3〜6の何れか1項に記載
の脱落防止機能付きシール装置。7. The seal device with a fall-off preventing function according to claim 3, wherein a corrugated washer is used as a seal member, and a fall-off preventing member is arranged in an internal space of the corrugated washer.
をシールしてなる請求項3〜6の何れか1項に記載の脱
落防止機能付きシール装置。8. The sealing device with a drop-off prevention function according to claim 3, wherein a gap between the seal member and the second member is sealed by a drop-off prevention member.
と該燃料噴射弁を組み付ける第2部材としてのシリンダ
ーヘッドの取付孔との2部材の対向面間に介装される請
求項1〜8の何れか1項に記載の脱落防止機能付きシー
ル装置。9. A fuel injection valve for an engine as a first member and a mounting hole for a cylinder head as a second member for assembling the fuel injection valve, which are interposed between opposed surfaces of the two members. The sealing device with a fall prevention function according to any one of the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11112841A JP2000304026A (en) | 1999-04-20 | 1999-04-20 | Sealing device with falling-off preventive function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11112841A JP2000304026A (en) | 1999-04-20 | 1999-04-20 | Sealing device with falling-off preventive function |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000304026A true JP2000304026A (en) | 2000-10-31 |
Family
ID=14596881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11112841A Pending JP2000304026A (en) | 1999-04-20 | 1999-04-20 | Sealing device with falling-off preventive function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000304026A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005155667A (en) * | 2003-11-20 | 2005-06-16 | Nippon Packing Kogyo Kk | Gasket |
JP2005155394A (en) * | 2003-11-25 | 2005-06-16 | Toyota Motor Corp | Combustion gas seal for fuel injection valves |
JP2010138810A (en) * | 2008-12-11 | 2010-06-24 | Denso Corp | Fuel injection valve installation structure |
CN105402405A (en) * | 2015-11-26 | 2016-03-16 | 成都九十度工业产品设计有限公司 | Metal combination gasket |
JP2019534408A (en) * | 2016-09-16 | 2019-11-28 | パーキンズ エンジンズ カンパニー リミテッドPerkins Engines Company Limited | Fuel injector and piston bowl |
-
1999
- 1999-04-20 JP JP11112841A patent/JP2000304026A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005155667A (en) * | 2003-11-20 | 2005-06-16 | Nippon Packing Kogyo Kk | Gasket |
JP2005155394A (en) * | 2003-11-25 | 2005-06-16 | Toyota Motor Corp | Combustion gas seal for fuel injection valves |
JP2010138810A (en) * | 2008-12-11 | 2010-06-24 | Denso Corp | Fuel injection valve installation structure |
CN105402405A (en) * | 2015-11-26 | 2016-03-16 | 成都九十度工业产品设计有限公司 | Metal combination gasket |
JP2019534408A (en) * | 2016-09-16 | 2019-11-28 | パーキンズ エンジンズ カンパニー リミテッドPerkins Engines Company Limited | Fuel injector and piston bowl |
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