JP3496364B2 - Exhaust pipe joint and method of manufacturing the same - Google Patents
Exhaust pipe joint and method of manufacturing the sameInfo
- Publication number
- JP3496364B2 JP3496364B2 JP26067395A JP26067395A JP3496364B2 JP 3496364 B2 JP3496364 B2 JP 3496364B2 JP 26067395 A JP26067395 A JP 26067395A JP 26067395 A JP26067395 A JP 26067395A JP 3496364 B2 JP3496364 B2 JP 3496364B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- tube
- outer tube
- expanded
- band
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/06—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends
- F16L21/065—Joints with sleeve or socket with a divided sleeve or ring clamping around the pipe-ends tightened by tangentially-arranged threaded pins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Exhaust Silencers (AREA)
- Joints With Sleeves (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、オートバ
イ等に使用される排気管継手に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust pipe joint used for automobiles, motorcycles and the like.
【０００２】[0002]
【発明が解決しようとする課題】この種の排気管継手と
して本出願人は、実願平３−８８５５２号（実開平５−
３２７１８号）において、外管の拡大円筒部と内管外面
との間の空間に配された円筒ガスケットを一対の押圧片
によって管軸に沿って押圧して圧縮変形させ、当該空間
を円筒ガスケットにより密に充填して、組付け時に存在
する隙間を埋め、結果として排気管への継手組付け直後
からの排気ガスの漏洩を防止するようにし、また上述の
一対の押圧片の締め付けによって外管と内管とを相互に
固定し、外管と内管との振動に起因する円筒ガスケット
の損傷を防止するようにした排気管継手を提案した。As an exhaust pipe joint of this kind, the present applicant has filed Japanese Utility Model Application No. 3-88552.
32718), a cylindrical gasket disposed in the space between the enlarged cylindrical portion of the outer pipe and the outer surface of the inner pipe is pressed along the pipe axis by a pair of pressing pieces to be compressed and deformed, and the space is closed by the cylindrical gasket. Densely fill the gaps existing at the time of assembly to prevent the exhaust gas from leaking immediately after the joint is assembled to the exhaust pipe, and tighten the pair of pressing pieces as described above to connect the outer pipe with the outer pipe. We proposed an exhaust pipe joint that fixes the inner pipe to each other and prevents damage to the cylindrical gasket due to vibration of the outer pipe and the inner pipe.
【０００３】ところで上記提案に係る排気管継手では、
排気管への継手組付け直後からの排気ガスの漏洩を防止
し、円筒ガスケットの損傷を防止するという初期の目的
は好ましく達成することができることを確認したが、そ
れに明示された具体例では、一対のボルトの締付けによ
る押圧片の移動で、円筒ガスケットを外管の拡大円筒部
と内管外面との間の空間に圧縮変形させてなるものであ
るが故に、一対のボルトの締付けの程度が相互に異なる
と、円筒ガスケットの圧縮変形の程度が円周方向に関し
て異なり、結果として排気ガスの漏洩防止を好ましく達
成し得ない虞があることが判明した。このため本排気管
継手の製造、分解組立てに際しては、一対のボルトの締
付けの程度の相互調整が必要となり、作業性にそれほど
優れたものではない。また、上記提案の排気管継手の具
体例では、一対の押圧片の締め付けによる外管と内管と
の相互固定は、上述の一対のボルトの外に更に設けられ
た一対のボルトの締め付けでなされるものであり、した
がってその製造、分解組立てに際しては、二組の一対の
ボルトの締付けを必要とし、この点においても作業性に
それほど優れたものではない。By the way, in the exhaust pipe joint according to the above proposal,
It was confirmed that the initial purpose of preventing the leakage of exhaust gas immediately after the fitting to the exhaust pipe and preventing the damage of the cylindrical gasket can be preferably achieved. Since the pressing piece is moved by tightening the bolts, the cylindrical gasket is compressed and deformed into the space between the enlarged cylindrical portion of the outer tube and the outer surface of the inner tube. It was found that if the difference is different, the degree of compressive deformation of the cylindrical gasket differs in the circumferential direction, and as a result, prevention of leakage of exhaust gas may not be achieved favorably. Therefore, when manufacturing, disassembling and assembling the exhaust pipe joint, it is necessary to mutually adjust the degree of tightening of the pair of bolts, and the workability is not so excellent. In the specific example of the exhaust pipe joint proposed above, mutual fixing of the outer pipe and the inner pipe by tightening the pair of pressing pieces is performed by tightening a pair of bolts further provided outside the pair of bolts. Therefore, when manufacturing and disassembling and assembling the same, it is necessary to tighten two pairs of bolts, which is not so excellent in workability.
【０００４】本発明は、前記諸点に鑑みてなされたもの
であって、その目的とするところは、調整が不要であっ
て、円筒ガスケットの圧縮変形の程度を円周方向に関し
てほぼ同一にし得、排気ガスの漏洩防止を好ましく達成
し得ると共に、外管と内管との振動に起因する円筒ガス
ケットの損傷を防止し得、加えて製造、分解組立作業性
が極めて優れた排気管継手及びその製造方法を提供する
ことにある。The present invention has been made in view of the above points, and an object thereof is that adjustment is unnecessary and the degree of compressive deformation of a cylindrical gasket can be made substantially the same in the circumferential direction, Exhaust gas leakage prevention can be preferably achieved, damage to the cylindrical gasket due to vibration of the outer pipe and the inner pipe can be prevented, and in addition, an exhaust pipe joint having excellent manufacturing and disassembly and assembly workability and its manufacture To provide a method.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成すべく、
本発明によれば、外管本体及びこの外管本体に肩部を介
して連接された拡径端部を具備した外管と、外管の拡径
端部に挿入された端部及びこの端部に肩部を介して連接
されて外管の拡径端部に挿入された拡径部を具備した内
管と、内管の端部の外周面と外管の拡径端部の内周面と
の間の環状空間に配された円筒ガスケットと、円筒ガス
ケットを管軸に沿って外管の肩部に向って押圧し、かつ
外管を内管に固定する押圧、固定手段とを具備した排気
管継手であって、押圧、固定手段は、外管の拡径端部に
管軸に沿って伸びて形成された少なくとも一対の切割り
溝と、外管の拡径端部に設けられた外管側の係止部と、
切割り溝のそれぞれを通って外管外に伸びかつ内管の拡
径部に設けられた内管側の係止部と、一端が外管側の係
止部に当接して、外管の拡径端部を内管の拡径部に締付
ける締付けバンドとを具備しており、締付けバンドは、
外管側の係止部に当接した一端を具備したバンド本体
と、バンド本体に一体的に設けられていると共にバンド
本体の他端側に位置する各先端が内管側の係止部に当接
した舌部とを具備しており、円筒ガスケットは、舌部に
より内管の肩部を介して外管の肩部に向って押圧されて
配されており、舌部は、バンド本体に管軸に沿って伸び
た切り込みが入れられて中心側に曲げられて形成されて
おり、舌部の各一端である各先端は自由端となってお
り、舌部の各他端はバンド本体に一体的に接続されてい
る排気管継手が提供される。[Means for Solving the Problems] To achieve the above object,
According to the present invention, the outer tube body and the outer tube having the enlarged diameter end portion connected to the outer tube body via the shoulder portion, the end portion inserted into the enlarged diameter end portion of the outer tube, and this end Inner tube having a diametrically expanded portion connected to the diametrical portion via a shoulder and inserted into the diametrically expanded end of the outer tube, an outer peripheral surface of the inner pipe end and an inner peripheral surface of the diametrically expanded end of the outer pipe. A cylindrical gasket disposed in an annular space between the surface and the surface, and pressing and fixing means for pressing the cylindrical gasket toward the shoulder portion of the outer tube along the tube axis and fixing the outer tube to the inner tube. In the exhaust pipe joint, the pressing and fixing means are provided on at least a pair of slit grooves formed along the pipe axis at the enlarged diameter end portion of the outer pipe, and at the enlarged diameter end portion of the outer pipe. And the locking part on the outer tube side,
The inner pipe-side locking portion that extends through the slits to the outside of the outer pipe and is provided on the expanded diameter portion of the inner pipe, and one end abuts the outer-pipe-side locking portion, the enlarged end portion is provided with a tightening clamping band diameter portion of the inner tube, the clamping band,
A band body provided with the contact with one end engaging portion of the outer pipe side, the band body to the engaging portion of the distal end the inner tube side located on the other end of the band body together are integrally provided and comprising a contact tongues, the cylindrical gasket is pressed toward the shoulder portion of the outer tube via a shoulder portion of the inner tube by the tongue
Are distribution, tongue, along the tube axis in the band body elongation
It is formed by making a notch and bending it toward the center
Each tip, which is one end of the tongue, is a free end.
The exhaust pipe joint is provided in which the other end of the tongue is integrally connected to the band body .
【０００６】また本発明によれば、内管側の係止部が、
内管の拡径部に溶接固定されたブロック体、内管の拡径
部に溶接固定された断面Ｌ字状部材又は内管の拡径部を
ビード状に成形してなる突起からなる上記の排気管継手
が提供される。Further, according to the present invention, the locking portion on the inner pipe side is
A block body welded and fixed to the expanded portion of the inner pipe, an L-shaped member having a cross-section welded and fixed to the expanded portion of the inner pipe, or a projection formed by forming the expanded portion of the inner pipe into a bead shape. An exhaust fitting is provided.
【０００７】更に本発明によれば、一対の切割り溝が、
管軸に対して対称に形成されている上記の排気管継手が
提供される。Further in accordance with the present invention, the pair of slit grooves are
There is provided the above exhaust pipe joint which is formed symmetrically with respect to the pipe axis.
【０００８】 更に本発明によれば前記目的は、外管本
体、この外管本体に肩部を介して連接された拡径端部、
この拡径端部に管軸に沿って伸びて形成された少なくと
も一対の切割り溝及び拡径端部に設けられた係止部をそ
れぞれ具備した外管と、円筒ガスケットが挿着された端
部、この端部に肩部を介して連接された拡径部及びこの
拡径部に、一対の切割り溝に対応して設けられた係止部
をそれぞれ具備した内管と、バンド本体及び内管の係止
部に対応して設けられかつバンド本体に管軸に沿って伸
びた切り込みが入れられて中心側に曲げられて形成され
ていると共に各一端である各先端が自由端となっており
各他端がバンド本体に一体的に接続されてバンド本体に
一体的に設けられた舌部をそれぞれ具備した締付けバン
ドとを準備し、円筒ガスケットが挿着された内管の端部
と内管の拡径部とを、内管側の係止部が切割り溝のそれ
ぞれを通って外管外に伸びかつ円筒ガスケットが内管の
端部の外周面と外管の拡径端部の内周面との間の環状空
間に配されるようにして、外管の拡径端部に挿入し、外
管側の係止部と内管側の各係止部との間において各舌部
が配されるように、締付けバンドを外管の拡径端部の外
周面に配してこれを締め付け、この締め付けにより中心
側に曲げられた舌部の当該曲げを解除して舌部を管軸方
向に伸ばし、円筒ガスケットが内管の肩部を介して外管
の肩部に向って押圧されるように、バンド本体の一端を
外管側の係止部に圧接させ、バンド本体の他端側に位置
する舌部の自由端である各先端を内管側の各係止部に圧
接させると共に、前記締め付けにより外管の拡径端部を
内管の拡径部に固定する排気管継手の製造方法によって
も達成される。Further, according to the present invention, the above object is to provide an outer tube main body, an enlarged diameter end portion connected to the outer tube main body via a shoulder,
An outer tube having at least a pair of slit grooves formed along the tube axis at the expanded diameter end and an engaging portion provided at the expanded diameter end, and an end into which a cylindrical gasket is inserted. Section, an enlarged diameter portion connected to this end portion via a shoulder portion, and an inner tube having a locking portion provided corresponding to the pair of slit grooves on the enlarged diameter portion, a band body, and It is provided corresponding to the locking part of the inner tube and extends along the tube axis on the band body.
It is formed by making a notch and bending it toward the center
And each tip, which is one end, is a free end.
A tightening band having the tongue part integrally connected to the band body, the other end of which is integrally connected to the band body, is prepared, and the end part of the inner pipe in which the cylindrical gasket is attached and the inner pipe. The expanded portion of the inner pipe extends through the slits to the outside of the outer pipe, and the cylindrical gasket extends between the outer peripheral surface of the end of the inner pipe and the expanded end of the outer pipe. Inserted into the expanded end of the outer tube so as to be arranged in the annular space between the peripheral surface and each tongue part between the outer tube side locking part and the inner tube side locking part. The tightening band is placed on the outer peripheral surface of the expanded end of the outer tube so that the tongue is bent and the tongue bent toward the center side is released by this tightening to release the tongue. Extend in the axial direction so that the cylindrical gasket is pressed toward the shoulder of the outer tube through the shoulder of the inner tube, and one end of the band body is used as the locking part on the outer tube side. Is contact, with is pressed against the respective tips are free ends of the tongue portion located on the other end of the band body to the engaging portion of the inner tube side, expansion of the inner tube diameter expansion end of the outer tube by the clamping also achieved by the manufacturing method of an exhaust pipe joint that fixed to the diameter.
【０００９】締付けバンドの材料としては、鋼、ステン
レス、ばね材等を例示し得る。通常、本排気管継手の排
気管を構成する外管はマフラー側に、外管に連接される
排気管を構成する内管はエンジン側にそれぞれ連結して
固定されるが、必ずしもこれに限定されない。円筒ガス
ケットとしては、これが圧縮された際に変形しやすいこ
と、また耐熱性を有する材料であれば、特に限定されな
いが、例えばステンレス製等の金属細線を織ったり編ん
だりして得られる金網からなる補強材と、膨張黒鉛、マ
イカ等の耐熱シートとを重ね合わせて、これを円筒状に
巻回して予備成形体を形成した後、この予備成形体を軸
方向に圧縮して製造したものなどを好適な一例としてあ
げることができる。Examples of the material for the tightening band include steel, stainless steel, spring materials and the like. Normally, the outer pipe that constitutes the exhaust pipe of the exhaust pipe joint is fixed to the muffler side, and the inner pipe that constitutes the exhaust pipe connected to the outer pipe is fixed to the engine side, but not limited to this. . The cylindrical gasket is not particularly limited as long as it is a material that is easily deformed when compressed and has heat resistance. For example, the cylindrical gasket is a wire mesh obtained by weaving or knitting metal thin wires such as stainless steel. Reinforcing material and expansive graphite, heat resistant sheet such as mica, etc. are superposed, and this is wound into a cylindrical shape to form a preformed body, and then the preformed body is compressed in the axial direction to be manufactured. It can be mentioned as a suitable example.
【００１０】[0010]
【発明の実施の形態】次に本発明の実施の形態を、図に
示す好ましい実施例に基づいて更に詳細に説明する。な
お、本発明はこれら実施例に何等限定されないのであ
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in more detail based on the preferred embodiments shown in the drawings. The present invention is not limited to these examples.
【００１１】[0011]
【実施例】図１から図４において、本例の排気管継手１
は、外管本体２及び外管本体２に肩部３を介して一体的
に連接された拡径端部４を具備した外管５と、外管５の
拡径端部４に挿入された端部６及び端部６に肩部７を介
して一体的に連接されて外管５の拡径端部４に挿入され
た拡径部８を具備した内管９と、内管９の端部６の外周
面１０と外管５の拡径端部４の内周面１１との間の環状
空間１２に配された円筒ガスケット１３と、円筒ガスケ
ット１３を管軸Ａに沿って外管５の肩部３に向って押圧
し、かつ外管５を内管９に固定する押圧、固定手段１４
とを具備している。1 to 4, an exhaust pipe joint 1 of this example is shown.
Is inserted into the outer tube body 2 and the outer tube body 5 and the outer tube body 5 having the radially expanded end portion 4 integrally connected to the outer tube body 2 via the shoulder portion 3. An inner pipe 9 having an end portion 6 and an enlarged diameter portion 8 integrally connected to the end portion 6 via a shoulder portion 7 and inserted into the enlarged diameter end portion 4 of the outer pipe 5, and an end of the inner pipe 9. The cylindrical gasket 13 arranged in the annular space 12 between the outer peripheral surface 10 of the portion 6 and the inner peripheral surface 11 of the expanded diameter end 4 of the outer tube 5, and the cylindrical gasket 13 along the tube axis A. Pressing and fixing means 14 for pressing the outer tube 5 to the inner tube 9 while pressing it toward the shoulder portion 3 of the
It has and.
【００１２】本例の外管本体２は、小径部２１と大径部
２２とを具備しており、小径部２１と大径部２２とは、
他の肩部２３を介して互いに連結されている。大径部２
２が肩部３を介して拡径端部４に一体的に連設されてい
る。内管９は小径の内管本体２５と前述の端部６と拡径
部８とからなり、内管本体２５と端部６とは互いに同径
に形成されている。なお、内管本体２５は、本例のよう
に端部６と同径である必要はなく、例えば拡径部８と同
径にして形成されたものであってもよい。内管本体２５
と拡径部８とは肩部２６を介して連接されている。The outer tube body 2 of this example comprises a small diameter portion 21 and a large diameter portion 22, and the small diameter portion 21 and the large diameter portion 22 are
They are connected to each other via another shoulder 23. Large diameter part 2
2 is integrally connected to the enlarged diameter end portion 4 via the shoulder portion 3. The inner pipe 9 includes a small-diameter inner pipe body 25, the end portion 6 and the enlarged diameter portion 8 described above, and the inner pipe body 25 and the end portion 6 are formed to have the same diameter. The inner tube body 25 does not have to have the same diameter as the end portion 6 as in this example, and may be formed to have the same diameter as the expanded diameter portion 8, for example. Inner tube body 25
And the enlarged diameter portion 8 are connected via a shoulder portion 26.
【００１３】押圧、固定手段１４は、外管５の拡径端部
４に、当該拡径端部４の先端から管軸Ａに沿って伸びて
管軸Ａに対して対称に形成された一対の切割り溝３１
と、外管５の拡径端部４の先端に一体的に形成されたフ
ランジ部からなる外管側の係止部３２と、切割り溝３１
のそれぞれを通って外管５の拡径端部４外に伸びかつ内
管９の拡径部８に溶接固定されて設けられたブロック体
からなる内管側の一対の係止部３３と、一端３４が外管
側の係止部３２に当接して、外管５の拡径端部４を内管
９の拡径部８に締付ける締付けバンド３５と、締付けバ
ンド３５を締めるボルト３６及びナット３７の組合せ体
からなる締手段３８とを具備している。A pair of pressing and fixing means 14 is formed on the enlarged diameter end portion 4 of the outer tube 5 so as to extend along the pipe axis A from the tip of the enlarged diameter end portion 4 and to be symmetrical with respect to the pipe axis A. Slit groove 31
An outer pipe side engaging portion 32 formed of a flange portion integrally formed at the tip of the enlarged diameter end portion 4 of the outer pipe 5, and a slit groove 31.
A pair of locking portions 33 on the inner pipe side that extend outside the enlarged diameter end portion 4 of the outer pipe 5 and are fixed to the enlarged diameter portion 8 of the inner pipe 9 by welding. A tightening band 35 for tightening the expanded diameter end portion 4 of the outer pipe 5 to the expanded diameter portion 8 of the inner pipe 9 by contacting the one end 34 with the locking portion 32 on the outer pipe side, and a bolt 36 and a nut for tightening the tightening band 35. And a tightening means 38 composed of a combination of 37.
【００１４】 締付けバンド３５は、外管側の係止部３
２に当接した一端３４を具備したバンド本体４１と、バ
ンド本体４１に管軸Ａに対して対称に一体的に設けられ
て、バンド本体４１の他端４２側に位置する各先端４３
が内管側の各係止部３３に当接した一対の舌部４４と、
バンド本体４１の周方向の両端にほぼ径方向かつ外方向
に伸びて一体的に設けられた締手段３８の取付部４５及
び４６とを具備している。各舌部４４は、バンド本体４
１に管軸Ａに沿って伸びた切り込み４７が入れられて形
成されており、その一端である先端４３が自由端となっ
ておりその他端５１がバンド本体４１に一体的に接続さ
れている。取付部４５及び４６には、ボルト３６が貫通
した貫通孔４７及び４８が形成され、補強リブ４９及び
５０により補強されている。ボルト３６へのナット３７
の螺合によるバンド本体４１の縮径で、外管５の拡径端
部４は、内管９の拡径部８の外周面に固定されている。The tightening band 35 is the locking portion 3 on the outer tube side.
2, a band main body 41 having one end 34 that abuts on the second main body 41, and distal ends 43 that are integrally provided symmetrically with respect to the tube axis A on the band main body 41 and are located on the other end 42 side of the band main body 41.
A pair of tongue portions 44 that are in contact with the respective locking portions 33 on the inner pipe side,
The band main body 41 is provided with mounting portions 45 and 46 of the tightening means 38 which are integrally provided at both ends in the circumferential direction so as to extend substantially radially and outwardly. Each tongue portion 44 is a band body 4
1 is formed with a notch 47 extending along the pipe axis A, and a tip 43 which is one end thereof is a free end.
The other end 51 is integrally connected to the band body 41.
Has been. Through holes 47 and 48 through which the bolt 36 penetrates are formed in the mounting portions 45 and 46, and are reinforced by reinforcing ribs 49 and 50. Nut 37 to bolt 36
The diameter-expanded end portion 4 of the outer tube 5 is fixed to the outer peripheral surface of the diameter-expanded portion 8 of the inner tube 9 by reducing the diameter of the band body 41 by screwing.
【００１５】ステンレス製等の金属細線を織ったり編ん
だりして得られる金網からなる補強材と、膨張黒鉛から
なる耐熱シートとを重ね合わせて、これを円筒状に巻回
して予備成形体を形成した後、この予備成形体を軸方向
に圧縮して製造した円筒ガスケット１３は、各舌部４４
により内管９の肩部７を介して外管５の肩部３に向って
押圧されて、配されている。A reinforcing material made of wire mesh obtained by weaving or knitting fine metal wires such as stainless steel and a heat resistant sheet made of expanded graphite are superposed and wound in a cylindrical shape to form a preform. After that, the cylindrical gasket 13 produced by axially compressing this preform has
Is pressed against the shoulder portion 3 of the outer tube 5 via the shoulder portion 7 of the inner tube 9 and arranged.
【００１６】本例の２個の切割り溝３１は管軸Ａに対し
て対称に形成されているが、切割り溝３１としては３個
以上設けてもよく、例えば３個設ける際には、特に限定
されないが、円周方向に関して１２０度の等角度間隔で
設けるとよく、この場合、係止部３３もそれに対応して
設けることが好ましい。外管５側の係止部３２として
は、本例のように拡径端部４の先端を拡径して形成した
フランジ部により実施してもよいが、これに代えて、例
えば拡径端部４の先端に一体的に又は溶接等により形成
又は固着した鍔部材又は逆Ｌ形金具により実施してもよ
い。The two slit grooves 31 in this example are formed symmetrically with respect to the tube axis A, but three or more slit grooves 31 may be provided. For example, when three slit grooves 31 are provided, Although not particularly limited, it may be provided at equal angular intervals of 120 degrees with respect to the circumferential direction, and in this case, it is preferable to provide the locking portions 33 correspondingly. The locking portion 32 on the outer tube 5 side may be implemented by a flange portion formed by expanding the tip of the expanded diameter end 4 as in this example, but instead of this, for example, a expanded diameter end It may be implemented by a collar member or an inverted L-shaped metal member integrally formed or fixed to the tip of the portion 4 by welding or the like.
【００１７】次に排気管継手１の製造方法を図５をも参
照して説明すると、まず、外管本体２、外管本体２に肩
部３を介して連接された拡径端部４、拡径端部４に管軸
Ａに沿って伸びて形成された一対の切割り溝３１及び拡
径端部４の先端に設けられた係止部３２をそれぞれ具備
した図２に示す上述の外管５と、円筒ガスケット１３が
外側に挿着された端部６、端部６に肩部７を介して連接
された拡径部８及び拡径部８に、一対の切割り溝３１に
対応して設けられた係止部３３をそれぞれ具備した図３
に示す上述の内管９と、バンド本体４１及び内管９の係
止部３３に対応して設けられかつ中心側に曲げられてバ
ンド本体４１に一体的に設けられた舌部４４を具備した
図４に示す上述の締付けバンド３５とを準備する。Next, the method of manufacturing the exhaust pipe joint 1 will be described with reference to FIG. 5 as well. First, the outer pipe body 2 and the enlarged diameter end portion 4 connected to the outer pipe body 2 via the shoulder portion 3, The pair of slits 31 extending along the tube axis A is formed in the expanded diameter end portion 4 and the locking portion 32 provided at the tip of the expanded diameter end portion 4 described above. The pipe 5, the end portion 6 in which the cylindrical gasket 13 is attached to the outside, the enlarged diameter portion 8 connected to the end portion 6 via the shoulder portion 7 and the enlarged diameter portion 8 correspond to the pair of slit grooves 31. 3 each provided with a locking portion 33 provided by
And the tongue portion 44 provided corresponding to the band body 41 and the locking portion 33 of the inner tube 9 and bent toward the center and integrally provided on the band body 41. The above-mentioned tightening band 35 shown in FIG. 4 is prepared.
【００１８】 次に、円筒ガスケット１３が外側に挿着
された内管９の端部６と内管９の拡径部８とを、内管側
の係止部３３が切割り溝３１のそれぞれを通って外管５
外に伸びかつ円筒ガスケット１３が端部６の外周面１０
と拡径端部４の内周面１１との間の環状空間１２に配さ
れるようにして、外管５の拡径端部４に挿入し、更に、
図５に示すように、外管側の係止部３２と内管側の各係
止部３３との間において各舌部４４が配されるように、
締付けバンド３５を外管５の拡径端部４の外周面に配
し、ボルト３６へのナット３７の螺合により締付けバン
ド３５を締め付け、この締め付けによるバンド本体４１
の縮径で、中心側に曲げられた各舌部４４の当該曲げを
解除して各舌部４４を管軸Ａに沿って伸ばし、円筒ガス
ケット１３が内管９の肩部７を介して外管５の肩部３に
向って押圧されるように、バンド本体４１の一端３４を
外管側の係止部３２に圧接させ、バンド本体４１の他端
４２側に位置する舌部４４の各先端４３を内管側の各係
止部３３に圧接させると共に、前記バンド３５の締め付
けにより外管５の拡径端部４を内管９の拡径部８に固定
する。これにより排気管継手１を得ることができる。Next, the end portion 6 of the inner pipe 9 and the enlarged diameter portion 8 of the inner pipe 9 in which the cylindrical gasket 13 is attached to the outer side, and the engagement portion 33 on the inner pipe side of the slit groove 31 are respectively formed. Through the outer tube 5
The cylindrical gasket 13 extends outward and the outer peripheral surface 10 of the end portion 6 extends.
And the inner peripheral surface 11 of the enlarged diameter end portion 4 so as to be arranged in the annular space 12 and inserted into the enlarged diameter end portion 4 of the outer pipe 5, and further,
As shown in FIG. 5, each tongue portion 44 is arranged between the outer tube side locking portion 32 and the inner tube side locking portion 33.
The tightening band 35 is arranged on the outer peripheral surface of the enlarged diameter end portion 4 of the outer tube 5, and the tightening band 35 is tightened by screwing the nut 37 into the bolt 36.
With the diameter reduced, the bending of each tongue portion 44 bent toward the center side is released, and each tongue portion 44 is extended along the pipe axis A , and the cylindrical gasket 13 is extended outside via the shoulder portion 7 of the inner pipe 9. One end 34 of the band body 41 is pressed against the locking portion 32 on the outer tube side so as to be pressed toward the shoulder 3 of the tube 5, and each of the tongue portions 44 located on the other end 42 side of the band body 41. The tip end 43 is pressed against each locking portion 33 on the inner pipe side, and the enlarged diameter end portion 4 of the outer pipe 5 is fixed to the enlarged diameter portion 8 of the inner pipe 9 by tightening the band 35. Thereby, the exhaust pipe joint 1 can be obtained.
【００１９】上記排気管継手１では、円筒ガスケット１
３が外周面１０及び内周面１１にぴったりと押圧接触さ
れて環状空間１２に密に充填されているので、環状空間
１２からの排気ガスの漏洩を所望に阻止し得る。In the exhaust pipe joint 1, the cylindrical gasket 1
Since the outer peripheral surface 10 and the inner peripheral surface 11 are pressed into close contact with each other 3 and are closely packed in the annular space 12, the exhaust gas can be prevented from leaking from the annular space 12 as desired.
【００２０】また排気管継手１では、ボルト３６を締め
付けることにより各舌部４４の曲げを解除して各舌部４
４を管軸Ａの方向に伸ばし、これにより係止部３２と係
止部３３とを管軸Ａに沿って離反させて、肩部７を介し
て円筒ガスケット１３を押圧、圧縮変形させているの
で、ボルト３６の締め付けの程度を調整することなし
に、円筒ガスケット１３の圧縮変形の程度を円周方向に
関してほぼ同一にし得る。換言すれば、本例の排気管継
手１では、所定量以上の圧縮変形を円筒ガスケット１３
に生じさせるには、ボルト３６の締め付けの程度を調節
する必要があるが、円筒ガスケット１３の圧縮変形の程
度を円周方向に関してほぼ同一にするためには、ボルト
３６の締め付け調整を不要とし得る。Further, in the exhaust pipe joint 1, by tightening the bolt 36, the bending of each tongue portion 44 is released and each tongue portion 4 is released.
4 is extended in the direction of the tube axis A, whereby the locking portion 32 and the locking portion 33 are separated from each other along the tube axis A, and the cylindrical gasket 13 is pressed and compressed and deformed via the shoulder portion 7. Therefore, the degree of compressive deformation of the cylindrical gasket 13 can be made substantially the same in the circumferential direction without adjusting the degree of tightening of the bolt 36. In other words, in the exhaust pipe joint 1 of this example, the cylindrical gasket 13 is subjected to compressive deformation of a predetermined amount or more.
However, in order to make the degree of compressive deformation of the cylindrical gasket 13 approximately the same in the circumferential direction, the tightening adjustment of the bolt 36 may be unnecessary. .
【００２１】そして排気管継手１では、拡径端部４を拡
径部８の外周面に押圧、固定して、外管５を内管９に固
定しているので、外管５と内管９との相対的な相互の微
振動をなくすことができ、肩部７の微振動によって円筒
ガスケット１３が劣化するようなことをなくし得る。In the exhaust pipe joint 1, since the expanded end 4 is pressed and fixed to the outer peripheral surface of the expanded part 8 and the outer pipe 5 is fixed to the inner pipe 9, the outer pipe 5 and the inner pipe 9 are fixed. It is possible to eliminate the relative microvibration relative to 9 and to prevent deterioration of the cylindrical gasket 13 due to the microvibration of the shoulder portion 7.
【００２２】なお、前記では内管側の係止部３３を、内
管９の拡径部８に溶接固定されたブロック体で実施した
が、これに代えて、図６に示すように、内管９の拡径部
８に溶接固定された断面Ｌ字状部材からなる部材で係止
部３３を実施しても、また、図７に示すように、内管９
の拡径部８をビード状に成形してなる突起で係止部３３
を実施してもよい。In the above description, the inner pipe side locking portion 33 is a block body welded and fixed to the expanded diameter portion 8 of the inner pipe 9. However, instead of this, as shown in FIG. Even if the locking portion 33 is implemented by a member composed of an L-shaped section member welded and fixed to the expanded diameter portion 8 of the pipe 9, as shown in FIG.
The engaging portion 33 is a protrusion formed by molding the enlarged diameter portion 8 of the
May be carried out.
【００２３】[0023]
【発明の効果】以上のように本発明によれば、調整が不
要であって、円筒ガスケットの圧縮変形の程度を円周方
向に関してほぼ同一にし得、排気ガスの漏洩防止を好ま
しく達成し得と共に、外管と内管との振動に起因する円
筒ガスケットの損傷を防止し得、加えて製造、分解組立
作業性が極めて優れた排気管継手を提供することができ
る。As described above, according to the present invention, no adjustment is required, the degree of compressive deformation of the cylindrical gasket can be made substantially the same in the circumferential direction, and the prevention of leakage of exhaust gas can be preferably achieved. It is possible to prevent the damage of the cylindrical gasket due to the vibration of the outer pipe and the inner pipe, and to provide the exhaust pipe joint which is extremely excellent in the workability of manufacturing and disassembling and assembling.
【図１】本発明の好ましい一実施例の断面図である。FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention.
【図２】図１に示す実施例に用いられるで外管を示し、
（ａ）は、その正面図であり、（ｂ）は、その左側面図
である。2 shows an outer tube used in the embodiment shown in FIG.
(A) is the front view, (b) is the left side view.
【図３】図１に示す実施例に用いられるで内管を示し、
（ａ）は、その正面図であり、（ｂ）は、その左側面図
である。FIG. 3 shows an inner tube used in the embodiment shown in FIG.
(A) is the front view, (b) is the left side view.
【図４】図１に示す実施例に用いられるで締付けバンド
等を示し、（ａ）は、その側面図であり、（ｂ）は、そ
の正面図であり、（ｃ）は、（ｂ）に示すｃ−ｃ線断面
図である。4 shows a tightening band and the like used in the embodiment shown in FIG. 1, (a) is a side view thereof, (b) is a front view thereof, and (c) is (b). 6 is a sectional view taken along line cc shown in FIG.
【図５】図１に示す実施例の製造方法の説明図である。FIG. 5 is an explanatory view of the manufacturing method of the embodiment shown in FIG.
【図６】本発明の好ましい他の実施例の説明図である。FIG. 6 is an explanatory view of another preferred embodiment of the present invention.
【図７】本発明の好ましい更に他の実施例の説明図であ
る。FIG. 7 is an explanatory diagram of still another preferred embodiment of the present invention.
【符号の説明】 １ 排気管継手 ２ 外管本体 ３、７ 肩部 ４ 拡径端部 ５ 外管 ６ 端部 ８ 拡径部 ９ 内管 １２ 環状空間 １３ 円筒状ガスケット １４ 押圧、固定手段 ３１ 切割り溝 ３２、３３ 係止部 ３５ 締付けバンド ４１ バンド本体 ４４ 舌部[Explanation of symbols] 1 Exhaust pipe fitting 2 Outer tube body 3,7 shoulder 4 Expanded end 5 outer tube 6 edge 8 Expanding part 9 inner tube 12 annular space 13 Cylindrical gasket 14 Pressing and fixing means 31 slit groove 32, 33 Locking part 35 tightening band 41 band body 44 tongue
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−174270（ＪＰ，Ａ) 特開 平７−286515（ＪＰ，Ａ) 実開 平３−80183（ＪＰ，Ｕ) 実開 昭63−157587（ＪＰ，Ｕ) 実開 平２−98292（ＪＰ，Ｕ) 実開 昭56−54213（ＪＰ，Ｕ) 実開 平４−129831（ＪＰ，Ｕ) 実開 平３−80183（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16L 21/00 - 21/08 F01N 7/08 F16L 23/00 - 25/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-174270 (JP, A) JP-A-7-286515 (JP, A) Actually open 3-80183 (JP, U) Actually open 63- 157587 (JP, U) Actually open 2-98292 (JP, U) Actually open 56-54213 (JP, U) Actually open 4-129831 (JP, U) Actually open 3-80183 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F16L 21/00-21/08 F01N 7/08 F16L 23/00-25/02
Claims (6)
て連接された拡径端部を具備した外管と、外管の拡径端
部に挿入された端部及びこの端部に肩部を介して連接さ
れて外管の拡径端部に挿入された拡径部を具備した内管
と、内管の端部の外周面と外管の拡径端部の内周面との
間の環状空間に配された円筒ガスケットと、円筒ガスケ
ットを管軸に沿って外管の肩部に向って押圧し、かつ外
管を内管に固定する押圧、固定手段とを具備した排気管
継手であって、押圧、固定手段は、外管の拡径端部に管
軸に沿って伸びて形成された少なくとも一対の切割り溝
と、外管の拡径端部に設けられた外管側の係止部と、切
割り溝のそれぞれを通って外管外に伸びかつ内管の拡径
部に設けられた内管側の係止部と、一端が外管側の係止
部に当接して、外管の拡径端部を内管の拡径部に締付け
る締付けバンドとを具備しており、締付けバンドは、外
管側の係止部に当接した一端を具備したバンド本体と、
バンド本体に一体的に設けられていると共にバンド本体
の他端側に位置する各先端が内管側の係止部に当接した
舌部とを具備しており、円筒ガスケットは、舌部により
内管の肩部を介して外管の肩部に向って押圧されて配さ
れており、舌部は、バンド本体に管軸に沿って伸びた切
り込みが入れられて中心側に曲げられて形成されてお
り、舌部の各一端である各先端は自由端となっており、
舌部の各他端はバンド本体に一体的に接続されている排
気管継手。1. An outer tube having an outer tube main body and an expanded diameter end connected to the outer tube main body via a shoulder, an end inserted into the expanded diameter end of the outer tube, and this end. An inner pipe having a diameter-expanded portion that is connected to the outer diameter of the outer pipe and is inserted into the diameter-expansion end of the outer pipe, and an outer peripheral surface of an end portion of the inner pipe and an inner peripheral surface of the diameter-enlarged end portion of the outer pipe. And a cylindrical gasket disposed in an annular space between and, and a pressing and fixing means for pressing the cylindrical gasket along the tube axis toward the shoulder of the outer tube and fixing the outer tube to the inner tube. In the exhaust pipe joint, the pressing and fixing means are provided in at least a pair of slit grooves formed along the pipe axis at the enlarged diameter end portion of the outer pipe, and at the enlarged diameter end portion of the outer pipe. The outer tube side locking part, the inner tube side locking part that extends outside the outer tube through each of the slit grooves and is provided in the expanded diameter part of the inner tube, and the one end is the outer tube side locking Abut the outer tube A tightening band for tightening the expanded end portion of the inner pipe to the expanded diameter portion of the inner pipe, and the tightening band has a band main body having one end in contact with the locking portion on the outer pipe side,
The band body is provided with a contact tongues the locking portion of the distal end the inner tube side located on the other end of the band body together are integrally provided, the cylinder gasket, the tongues via a shoulder portion of the inner tube are arrangement of <br/> is pressed toward the shoulder portion of the outer tube, tongues, cut extending along the tube axis in the band body
It is formed by being bent and bent toward the center.
And each tip, which is one end of the tongue, is a free end,
An exhaust pipe joint in which the other end of the tongue is integrally connected to the band body .
固定されたブロック体からなる請求項１に記載の排気管
継手。2. The exhaust pipe joint according to claim 1, wherein the engagement portion on the inner pipe side is a block body welded and fixed to the expanded diameter portion of the inner pipe.
固定された断面Ｌ字状部材からなる請求項１に記載の排
気管継手。3. The exhaust pipe joint according to claim 1, wherein the engagement portion on the inner pipe side is made of a member having an L-shaped cross section which is welded and fixed to the expanded diameter portion of the inner pipe.
ド状に成形してなる突起からなる請求項１に記載の排気
管継手。4. The exhaust pipe joint according to claim 1, wherein the engagement portion on the inner pipe side is a protrusion formed by molding the enlarged diameter portion of the inner pipe into a bead shape.
形成されている請求項１から４のいずれか一項に記載の
排気管継手。5. The exhaust pipe joint according to claim 1, wherein the pair of slit grooves are formed symmetrically with respect to the pipe axis.
連接された拡径端部、この拡径端部に管軸に沿って伸び
て形成された少なくとも一対の切割り溝及び拡径端部に
設けられた係止部をそれぞれ具備した外管と、円筒ガス
ケットが挿着された端部、この端部に肩部を介して連接
された拡径部及びこの拡径部に、一対の切割り溝に対応
して設けられた係止部をそれぞれ具備した内管と、バン
ド本体及び内管の係止部に対応して設けられかつバンド
本体に管軸に沿って伸びた切り込みが入れられて中心側
に曲げられて形成されていると共に各一端である各先端
が自由端となっており各他端がバンド本体に一体的に接
続されてバンド本体に一体的に設けられた舌部をそれぞ
れ具備した締付けバンドとを準備し、円筒ガスケットが
挿着された内管の端部と内管の拡径部とを、内管側の係
止部が切割り溝のそれぞれを通って外管外に伸びかつ円
筒ガスケットが内管の端部の外周面と外管の拡径端部の
内周面との間の環状空間に配されるようにして、外管の
拡径端部に挿入し、外管側の係止部と内管側の各係止部
との間において各舌部が配されるように、締付けバンド
を外管の拡径端部の外周面に配してこれを締め付け、こ
の締め付けにより中心側に曲げられた舌部の当該曲げを
解除して舌部を管軸に沿って伸ばし、円筒ガスケットが
内管の肩部を介して外管の肩部に向って押圧されるよう
に、バンド本体の一端を外管側の係止部に圧接させ、バ
ンド本体の他端側に位置する舌部の自由端である各先端
を内管側の各係止部に圧接させると共に、前記締め付け
により外管の拡径端部を内管の拡径部に固定する排気管
継手の製造方法。6. An outer tube body, an enlarged diameter end portion connected to the outer tube body via a shoulder portion, at least a pair of slit grooves formed along the tube axis at the enlarged diameter end portion, and The outer tube each having a locking portion provided at the enlarged diameter end, the end portion where the cylindrical gasket is inserted, the enlarged diameter portion connected to this end portion via the shoulder portion, and the enlarged diameter portion an inner tube locking portions equipped respectively provided corresponding to the pair of cut-split groove is provided corresponding to the engaging portion of the band body and the inner tube and the band
Each body has a notch that extends along the tube axis, is bent toward the center , and is one end.
Is a free end, and the other ends of the
And a tightening band each having a tongue portion integrally provided on the band main body, the end portion of the inner pipe having the cylindrical gasket inserted and the expanded portion of the inner pipe, and the inner pipe side. And the cylindrical gasket extends in the annular space between the outer peripheral surface of the end portion of the inner pipe and the inner peripheral surface of the expanded end portion of the outer pipe. In this way, insert it into the expanded end of the outer pipe, and tighten the tightening band so that each tongue is arranged between the outer pipe-side locking part and the inner pipe-side locking part. It is placed on the outer peripheral surface of the expanded end of the outer tube and tightened, and the tongue bent to the center side is released by this tightening and the tongue is extended along the tube axis. One end of the band body is pressed against the outer tube side locking part so that it is pressed toward the shoulder part of the outer tube through the shoulder part of the tube, and the other end side of the band body Together is pressed against the respective tips are free ends of the tongue portion located on the engaging portions of the inner tube side, the production of an exhaust pipe joint to fix the enlarged end portion of the outer tube to the enlarged diameter portion of the inner tube by the clamping Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26067395A JP3496364B2 (en) | 1995-09-13 | 1995-09-13 | Exhaust pipe joint and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26067395A JP3496364B2 (en) | 1995-09-13 | 1995-09-13 | Exhaust pipe joint and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0979454A JPH0979454A (en) | 1997-03-25 |
| JP3496364B2 true JP3496364B2 (en) | 2004-02-09 |
Family
ID=17351188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26067395A Expired - Fee Related JP3496364B2 (en) | 1995-09-13 | 1995-09-13 | Exhaust pipe joint and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3496364B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4933896B2 (en) * | 2003-11-07 | 2012-05-16 | ノーマ・ユー・エス・ホールディング・リミテッド・ライアビリティ・カンパニー | Pipe clamp having a latch and pipe assembly including the same |
| CN102099555B (en) * | 2009-10-07 | 2014-03-12 | 滨松垫片株式会社 | Gasket for muffler, and muffler joint |
| GB2518220A (en) * | 2013-09-13 | 2015-03-18 | Taylor Kerr Couplings Ltd | Pipe coupling |
| KR102343807B1 (en) * | 2021-08-27 | 2021-12-28 | 주식회사 동도이엔지 | Grounding apparatus of apartment house electricity |
-
1995
- 1995-09-13 JP JP26067395A patent/JP3496364B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0979454A (en) | 1997-03-25 |
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