JPH07286515A - Exhaust pipe joint and manufacture thereof - Google Patents
Exhaust pipe joint and manufacture thereofInfo
- Publication number
- JPH07286515A JPH07286515A JP10340994A JP10340994A JPH07286515A JP H07286515 A JPH07286515 A JP H07286515A JP 10340994 A JP10340994 A JP 10340994A JP 10340994 A JP10340994 A JP 10340994A JP H07286515 A JPH07286515 A JP H07286515A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- shaped member
- expanded
- shoulder
- tube
- 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.)
- Granted
Links
Landscapes
- Exhaust Silencers (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】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 in automobiles, motorcycles and the like.
【0002】[0002]
【従来の技術】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。2. Description of the Related Art As an exhaust pipe joint of this type, the present applicant has
In Japanese Patent Application No. 3-88552 (Japanese Utility Model Publication No. 5-32718), a cylindrical gasket arranged in a space between an enlarged cylindrical portion of an outer tube and an outer surface of the inner tube is pressed along a tube axis by a pair of pressing pieces. Then, it is compressed and deformed, and the space is densely filled with a cylindrical gasket to fill the gap existing at the time of assembly,
As a result, the exhaust gas is prevented from leaking immediately after the fitting to the exhaust pipe, and the outer pipe and the inner pipe are fixed to each other by tightening the pair of pressing pieces described above. We proposed an exhaust pipe joint designed to prevent damage to the cylindrical gasket due to the vibration of the cylinder.
【0003】[0003]
【発明が解決しようとする課題】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。In the exhaust pipe joint according to the above-mentioned proposal, the initial purpose of preventing leakage of exhaust gas and preventing damage to the cylindrical gasket immediately after the joint is assembled to the exhaust pipe is preferable. It was confirmed that this can be achieved, but in the example specified therein, the pressing piece is moved by tightening a pair of bolts to compress the cylindrical gasket into the space between the enlarged cylindrical portion of the outer pipe and the outer surface of the inner pipe. Therefore, if the tightening degrees of the pair of bolts are different from each other, the degree of compressive deformation of the cylindrical gasket is different in the circumferential direction, and as a result, the prevention of exhaust gas leakage cannot be preferably achieved. It turned out to be a concern. 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
であり、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でき、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 it is an object of the present invention that adjustment is unnecessary and the degree of compressive deformation of a cylindrical gasket can be made substantially the same in the circumferential direction. An exhaust pipe joint and a manufacturing method thereof, which can preferably achieve gas leakage prevention, can prevent damage to a cylindrical gasket due to vibration of an outer pipe and an inner pipe, and have extremely excellent workability in manufacturing and disassembling and assembling. To provide.
【0005】[0005]
【課題を解決するための手段】本発明によれば前記目的
は、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
に沿いかつ外管の肩部に向って押圧すると共に外管を内
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、他端が内管側の係止部に当接して外管の拡径端部
の外周面に配された帯状部材と、この帯状部材を外管の
拡径端部に締付けるべく、帯状部材の端部に設けられた
締付け手段とを具備し、円筒ガスケットは、帯状部材に
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
おり、帯状部材は、その管軸に沿う方向の長さが伸ばさ
れるように、締付け手段の締付けにより弾性変形されて
おり、外管の拡径端部は、帯状部材の締付けにより内管
の拡径部に押圧、固定されている排気管継手によって達
成される。According to the present invention, the object is to provide an outer tube main body and an outer tube having an enlarged diameter end connected to the outer tube main body via a shoulder, and to expand the outer tube. An inner pipe having an end portion inserted into the radial end portion and an enlarged diameter portion connected to this end portion via a shoulder portion and inserted into the enlarged diameter end portion of the outer pipe, and an outer circumference of the end portion of the inner pipe. The cylindrical gasket disposed in the annular space between the surface and the inner peripheral surface of the expanded end of the outer tube, and pressing the cylindrical gasket along the tube axis and toward the shoulder of the outer tube, An exhaust pipe joint including a pressing and fixing means for fixing to a pipe, wherein the pressing and fixing means includes at least a pair of slit grooves formed along the pipe axis at an enlarged end portion of the outer pipe. , The outer pipe side locking portion provided at the outer diameter expanded end portion of the outer pipe and the inner pipe side extending through the slits to the outside of the outer pipe and provided on the inner diameter expanded portion of the inner pipe. A stopper, one end of which is in contact with the outer pipe-side locking portion and the other end of which is in contact with the inner pipe-side locking portion and which is arranged on the outer peripheral surface of the expanded pipe end of the outer pipe; And a tightening means provided at an end portion of the band-shaped member for tightening the band-shaped member to the expanded diameter end portion of the outer tube, wherein the cylindrical gasket has a shoulder portion of the outer tube via the shoulder portion of the inner tube by the band-shaped member. The strip-shaped member is elastically deformed by the tightening of the tightening means so that the length in the direction along the tube axis of the strip-shaped member is extended. This is achieved by an exhaust pipe joint that is pressed and fixed to the expanded diameter portion of the inner pipe by tightening.
【0006】また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
拡径部に設けられた係止部をそれぞれ具備した内管とを
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
係止部と内管側の係止部との間において外管の拡径端部
の外周面に、管軸方向に弾性変形可能な帯状部材を配
し、この帯状部材を締め付け、この締め付けにより帯状
部材を弾性変形させて管軸方向に伸ばして、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、帯状部材の一端を外管側の係止部に当接さ
せ、その他端を内管側の係止部に当接させると共に、前
記締め付けにより帯状部材を介して外管の拡径端部を内
管の拡径部に押圧、固定する排気管継手の製造方法によ
って達成される。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 through 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 inner pipe provided with an enlarged diameter portion connected to this end portion via a shoulder portion and an engaging portion provided on the enlarged diameter portion, respectively, and an inner pipe having a cylindrical gasket inserted therein. Between the end portion and the enlarged diameter portion of the inner pipe, the inner pipe side locking portion extends to the outside of the outer pipe through each of the slit grooves, and the cylindrical gasket expands the outer peripheral surface of the end portion of the inner pipe and the outer pipe. It is inserted in the expanded end of the outer pipe so that it is arranged in the annular space between the inner peripheral surface of the radial end and the outer pipe-side locking part and the inner pipe-side locking part. On the outer peripheral surface of the expanded end of the outer tube, a band-shaped member that is elastically deformable in the pipe axis direction is arranged, and this band-shaped member is tightened, and the band-shaped member is elastically deformed by this tightening. Extend in the tube axis direction, abutting one end of the band-shaped member on the outer tube side locking portion so that the cylindrical gasket is pressed toward the shoulder portion of the outer tube through the shoulder portion of the inner tube. Achieved by a method of manufacturing an exhaust pipe joint in which the end is brought into contact with a locking portion on the inner pipe side, and the enlarged diameter end portion of the outer pipe is pressed and fixed to the enlarged diameter portion of the inner pipe through the band-shaped member by the tightening. To be done.
【0007】上記排気管継手において、締付け前の帯状
部材の形状として、断面円弧状又は断面波形を一つの好
ましい例として挙げることができる。特に好ましくは断
面円弧状であるが、本発明はこれに何等限定されない。
帯状部材の材料としては、鋼、ステンレス、ばね材等を
例示し得る。帯状部材の端部のそれぞれに、貫通孔を有
した耳部を形成し、締付け手段を、耳部の貫通孔に配さ
れたボルトと、このボルトに螺合したナットとで構成し
てもよく、この場合、管軸に直交する方向からボルトを
回転できるようになっていると、製造、分解組立作業性
が更に向上する。また、締付け前の帯状部材の形状が断
面円弧状である場合等では、帯状部材の端部近傍を、耳
部に向かうにしたがってその幅が狭くなるように形成
し、しっかりと帯状部材が締め付けられるようにしても
よい。In the above exhaust pipe joint, as a shape of the belt-shaped member before tightening, an arcuate section or a corrugated section can be given as one preferable example. Particularly preferably, it has an arcuate cross section, but the present invention is not limited thereto.
Examples of the material of the belt-shaped member include steel, stainless steel, spring materials and the like. Each of the end portions of the belt-shaped member may be formed with an ear portion having a through hole, and the tightening means may be composed of a bolt arranged in the through hole of the ear portion and a nut screwed to the bolt. In this case, if the bolt can be rotated from the direction orthogonal to the tube axis, the workability of manufacturing and disassembling / assembling is further improved. Further, when the shape of the belt-shaped member before tightening is an arcuate section, etc., the width of the belt-shaped member near the ends is narrowed toward the ears, and the belt-shaped member is firmly tightened. You may do it.
【0008】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。Usually, the outer pipe constituting the exhaust pipe of the present exhaust pipe joint is fixed to the muffler side, and the inner pipe constituting the exhaust pipe connected to the outer pipe is fixed to the engine side. Not limited to. As a cylindrical gasket,
It is not particularly limited as long as it is a material that is easily deformed when compressed and has heat resistance, but for example, a reinforcing material composed of a wire mesh obtained by weaving or knitting metal thin wires such as stainless steel and expansion, A preferred example is one in which a heat-resistant sheet such as graphite or mica is superposed, and this is wound into a cylindrical shape to form a preform, and then the preform is axially compressed and manufactured. be able to.
【0009】[0009]
【作用】本発明の排気管継手は、上述のように通常、外
管がマフラー側に、内管がエンジン側にそれぞれ連結し
て用いられる。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は帯
状部材により当該環状空間で押圧されて圧縮されている
ため、当該環状空間は円筒ガスケットにより密に充填さ
れる結果、排気ガスの漏洩は組立て後直ちに防止され得
る。そして、締付け手段の締め付けにより帯状部材に弾
性変形を生じさせ、しかして円筒ガスケットを環状空間
で押圧、圧縮させているので、均等に円筒ガスケットが
環状空間で押圧、圧縮される。更に、外管の拡径端部
は、帯状部材の締付けにより内管の拡径部に押圧、固定
されているので、外管と内管との間に相対的な振動が生
じ難く、外管と内管との振動に起因する円筒ガスケット
の損傷が防止される。As described above, the exhaust pipe joint of the present invention is usually used by connecting the outer pipe to the muffler side and the inner pipe to the engine side. Since the cylindrical gasket arranged 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 diameter end portion of the outer pipe is pressed and compressed in the annular space by the band-shaped member, As a result of the annular space being tightly filled by the cylindrical gasket, exhaust gas leakage can be prevented immediately after assembly. Then, the band-shaped member is elastically deformed by the tightening of the tightening means, and since the cylindrical gasket is pressed and compressed in the annular space, the cylindrical gasket is uniformly pressed and compressed in the annular space. Furthermore, the expanded end of the outer pipe is pressed and fixed to the expanded part of the inner pipe by tightening the strip-shaped member, so relative vibration does not easily occur between the outer pipe and the inner pipe, and the outer pipe The cylindrical gasket is prevented from being damaged due to the vibration between the inner pipe and the inner pipe.
【0010】次に本発明を、図に示す好ましい一具体例
に基づいて更に詳細に説明する。なお、本発明はこれら
具体例に何等限定されないのである。The present invention will now be described in more detail based on a preferred embodiment shown in the drawings. The present invention is not limited to these specific examples.
【0011】[0011]
【具体例】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9を介して連接
されて外管5の拡径端部4に挿入された拡径部10を具
備した内管11と、内管11の端部6の外周面12と外
管5の拡径端部4の内周面13との間の環状空間14に
配された円筒ガスケット15と、円筒ガスケット15を
管軸Aに沿いかつ外管5の肩部3に向って押圧すると共
に外管5を内管11に固定する押圧、固定手段16とを
具備している。SPECIFIC EXAMPLE Exhaust pipe joint 1 of this example in FIGS. 1 to 4
Is an outer tube 5 having an outer tube body 2 and an enlarged diameter end 4 connected to the outer tube body 2 via a shoulder portion 3, and an end portion 6 inserted into the enlarged diameter end 4 of the outer tube 5. And an inner pipe 11 having an enlarged diameter portion 10 connected to the end portion 6 via a shoulder portion 9 and inserted into the enlarged diameter end portion 4 of the outer pipe 5, and an outer peripheral surface 12 of the end portion 6 of the inner pipe 11. And a cylindrical gasket 15 disposed in the annular space 14 between the inner peripheral surface 13 of the expanded end portion 4 of the outer tube 5 and the cylindrical gasket 15 along the tube axis A and toward the shoulder portion 3 of the outer tube 5. And a fixing means 16 for fixing the outer pipe 5 to the inner pipe 11.
【0012】本例の内管11は小径の内管本体21と前
述の端部6と拡径部10とからなり、内管本体21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
21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10と同径にして形成してもよい。内管本
体21と拡径部10とは肩部22を介して連接されてい
る。The inner pipe 11 of this embodiment comprises an inner pipe body 21 having a small diameter, the end portion 6 and the enlarged diameter portion 10 described above, and the inner pipe body 21 and the end portion 6 are formed to have the same diameter. The inner tube body 21 does not have to have the same diameter as the end portion 6 as in this example,
For example, the diameter may be the same as that of the expanded diameter portion 10. The inner tube body 21 and the expanded diameter portion 10 are connected to each other via a shoulder portion 22.
【0013】押圧、固定手段16は、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3
2と、拡径端部4に設けられた外管5側の係止部として
の拡径端33と、一対の切割り溝31及び32のそれぞ
れを通って外管5外に伸びかつ内管11の拡径部10に
溶接により固着して設けられた内管11側の係止部とし
ての一対の逆L形金具34と、一端35が拡径端33の
根元に当接し、他端36が逆L形金具34に当接して拡
径端部4の外周面に配された帯状部材37と、帯状部材
37を拡径端部4に締付けるべく、帯状部材37の端部
38に設けられた締付け手段39とを具備してなる。The pressing and fixing means 16 has a pair of slit grooves 31 and 3 formed along the tube axis A at the expanded end portion 4.
2, an enlarged diameter end 33 as a locking portion provided on the enlarged diameter end 4 on the outer pipe 5 side, and a pair of slit grooves 31 and 32, respectively, and extends outside the outer pipe 5 and extends to the inner pipe. A pair of inverted L-shaped metal fittings 34 as locking parts on the side of the inner pipe 11 fixedly attached to the expanded diameter portion 11 of the inner pipe 11 by welding, one end 35 abuts on the base of the expanded diameter end 33, and the other end 36 Is provided on the end portion 38 of the strip-shaped member 37 for tightening the strip-shaped member 37 on the enlarged-diameter end portion 4 and the strip-shaped member 37 arranged on the outer peripheral surface of the enlarged-diameter end portion 4 in contact with the inverted L-shaped metal fitting 34. And tightening means 39.
【0014】本例の2個の切割り溝31及び32は管軸
Aを挟んで対称に形成されているが、切割り溝31及び
32としては2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、逆L形金具
34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
径して形成した拡径端33により具体化してもよいが、
これに代えて、例えば拡径端部4の先端に鍔部材又は逆
L形金具34と同等の金具を一体的に又は溶接等により
形成又は固着して外管5側の係止部を具体化してもよ
い。Although the two slits 31 and 32 in this embodiment are formed symmetrically with the tube axis A in between, two or more slits 31 and 32 may be provided, for example, three slits. At this time, although not particularly limited, 120 in the circumferential direction
It is preferable to provide them at equal angular intervals, and in this case, it is preferable to provide the inverted L-shaped metal fittings 34 correspondingly. The locking portion on the outer tube 5 side may be embodied by the enlarged diameter end 33 formed by expanding the tip of the enlarged diameter end portion 4 as in this example.
Instead of this, for example, a flange member or a metal fitting equivalent to the inverted L-shaped metal fitting 34 is integrally formed by welding or the like or fixed to the tip of the expanded diameter end 4 to embody the locking portion on the outer pipe 5 side. May be.
【0015】帯状部材37は、帯本体51と、帯本体5
1の端部に一体に形成されており、帯本体51に対して
外方向に折り曲げられた一対の対向した耳部52及び5
3とを具備しており、耳部52及び53には貫通孔54
及び55が形成されている。帯本体51は、その端部近
傍で、耳部52及び53に向かうにしたがってその幅が
狭くなるように、形成されている。The belt-shaped member 37 includes a belt main body 51 and a belt main body 5.
A pair of opposed ears 52 and 5 that are integrally formed at one end and are bent outward with respect to the band body 51.
3 and a through hole 54 in the ears 52 and 53.
And 55 are formed. The band main body 51 is formed so that its width becomes narrower toward the ears 52 and 53 near the ends thereof.
【0016】本例の締付け手段39は、貫通孔54及び
55に挿通されたボルト56と、ボルト56に螺合され
たナット57とを具備しており、ナット57へのボルト
56の螺合による帯本体51の縮径で、帯本体51を拡
径端部4の外周面に締め付けている。The tightening means 39 of this embodiment is provided with a bolt 56 inserted through the through holes 54 and 55 and a nut 57 screwed into the bolt 56. The bolt 56 is screwed into the nut 57. By reducing the diameter of the band body 51, the band body 51 is fastened to the outer peripheral surface of the enlarged diameter end portion 4.
【0017】円筒ガスケット15は、帯本体51により
肩部9を介して外管5の肩部3に向って押圧されてお
り、帯本体51は、その管軸Aに沿う方向の長さが伸ば
されるように、締付け手段39の締付けにより弾性変形
されている。本例の帯本体51の締付け前の形状は図6
に示すように断面円弧状であり、このような断面形状の
帯本体51が締付け手段39の締付けにより図1に示す
ように断面平板形状に弾性変形されている。外管5の拡
径端部4は、締付け手段39の締付けにより内管11の
拡径部10の外周面に押圧、固定されている。The cylindrical gasket 15 is pressed by the band main body 51 toward the shoulder 3 of the outer tube 5 via the shoulder 9, and the band main body 51 is elongated in the direction along the tube axis A thereof. As described above, it is elastically deformed by the tightening of the tightening means 39. The shape before tightening of the belt main body 51 of this example is shown in FIG.
As shown in FIG. 3, the band main body 51 having an arcuate cross section is elastically deformed into a flat plate cross section as shown in FIG. 1 by tightening the tightening means 39. The enlarged diameter end portion 4 of the outer pipe 5 is pressed and fixed to the outer peripheral surface of the enlarged diameter portion 10 of the inner pipe 11 by tightening the tightening means 39.
【0018】以上のように構成される排気管継手1は次
のようにして組立て製造される。すなわち、図6に示す
ように、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、32及び拡径端部
4に設けられた拡径端33をそれぞれ具備した外管5
と、円筒ガスケット15が圧入挿着された端部6、端部
6に肩部9を介して連接された拡径部10及び拡径部1
0に溶接により固着して設けられた一対の逆L形金具3
4をそれぞれ具備した内管11とを準備する。The exhaust pipe joint 1 configured as described above is assembled and manufactured as follows. That is, as shown in FIG. 6, first, the outer tube body 2, the radially expanded end portion 4 connected to the outer tube body 2 through the shoulder portion 3, and the radially expanded end portion 4 extending along the tube axis A are formed. Tube 5 having a pair of cut grooves 31 and 32 and an enlarged diameter end 33 provided on the enlarged diameter end 4 respectively.
And the end portion 6 into which the cylindrical gasket 15 is press-fitted, and the enlarged diameter portion 10 and the enlarged diameter portion 1 connected to the end portion 6 via the shoulder portion 9.
A pair of inverted L-shaped metal fittings 3 fixedly welded to 0
An inner tube 11 including 4 is prepared.
【0019】次に、円筒ガスケット15が挿着された端
部6と拡径部10とを、一対の逆L形金具34が一対の
切割り溝31及び32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15が端部6の外周面12と拡径
端部4の内周面13との間の環状空間14に配されるよ
うにして、拡径端部4に挿入し、拡径端33と逆L形金
具34との間において拡径端部4の外周面に、管軸A方
向に弾性変形可能な帯状部材37を配し、ナット57へ
のボルト56の螺入、締め付けにより、帯状部材37を
締め付け、この締め付けにより帯本体51を弾性変形さ
せて管軸A方向に伸ばして、円筒ガスケット15が肩部
9を介して肩部3に向って押圧されるように、帯本体5
1の一端35を拡径端33の根元に当接させ、その他端
36をL形金具34に当接させると共に、前記締め付け
による帯本体51の縮径により外管5の拡径端部4を縮
径させてこれを拡径部10の外周面に押圧、固定する。Next, the end portion 6 into which the cylindrical gasket 15 is inserted and the expanded diameter portion 10 pass through the pair of inverted L-shaped metal fittings 34 through the pair of slit grooves 31 and 32, respectively, and outside the outer pipe 5. The cylindrical gasket 15 extends into the annular space 14 between the outer peripheral surface 12 of the end portion 6 and the inner peripheral surface 13 of the expanded diameter end portion 4, and is inserted into the expanded diameter end portion 4 and expanded. A band-shaped member 37 which is elastically deformable in the direction of the pipe axis A is arranged on the outer peripheral surface of the enlarged diameter end portion 4 between the radial end 33 and the inverted L-shaped metal fitting 34, and the bolt 56 is screwed into the nut 57 and tightened. Thereby tightening the band-shaped member 37, elastically deforming the band main body 51 by this tightening and extending in the tube axis A direction, so that the cylindrical gasket 15 is pressed toward the shoulder 3 via the shoulder 9. Body 5
One end 35 of 1 is brought into contact with the base of the expanded diameter end 33, and the other end 36 is brought into contact with the L-shaped metal fitting 34, and the expanded diameter end 4 of the outer tube 5 is fixed by the diameter reduction of the band main body 51 due to the tightening. The diameter is reduced, and this is pressed and fixed to the outer peripheral surface of the enlarged diameter portion 10.
【0020】以上のように組立て製造された図1に示す
本例の排気管継手1では、円筒ガスケット15が外周面
12及び内周面13にぴったりと押圧接触されて環状空
間14に密に充填されているので、環状空間14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 of the present embodiment shown in FIG. 1 assembled and manufactured as described above, the cylindrical gasket 15 is closely pressed against the outer peripheral surface 12 and the inner peripheral surface 13 to densely fill the annular space 14. Therefore, the leakage of the exhaust gas from the annular space 14 can be prevented as desired.
【0021】また排気管継手1では、ボルト56を締め
付けることにより帯状部材37を弾性変形させ、これに
より拡径端33と逆L形金具34とを管軸Aに沿って離
反させて、肩部9を介して円筒ガスケット15を押圧、
圧縮変形させているので、ボルト56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15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15に生じさせるには、ボルト56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
15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56の締め付け調整を不要とし得
る。Further, in the exhaust pipe joint 1, the band member 37 is elastically deformed by tightening the bolt 56, so that the expanded diameter end 33 and the inverted L-shaped metal fitting 34 are separated from each other along the pipe axis A, and the shoulder portion. Press the cylindrical gasket 15 through 9,
Since the compression deformation is performed, the compression deformation degree of the cylindrical gasket 15 can be made substantially the same in the circumferential direction without adjusting the tightening degree of the bolt 56. In other words, in the exhaust pipe joint 1 of the present example, it is necessary to adjust the degree of tightening of the bolts 56 in order to cause the cylindrical gasket 15 to be compressed and deformed by a predetermined amount or more. In order to make the degree substantially the same in the circumferential direction, the tightening adjustment of the bolt 56 may be unnecessary.
【0022】そして排気管継手1では、拡径端部4を拡
径部10の外周面に押圧、固定して、外管5を内管11
に固定しているので、外管5と内管11との相対的な相
互の微振動をなくすことができ、肩部9の微振動によっ
て円筒ガスケット15が劣化するようなことを生じなく
し得る。In the exhaust pipe joint 1, the expanded diameter end 4 is pressed against and fixed to the outer peripheral surface of the expanded diameter portion 10, and the outer pipe 5 is fixed to the inner pipe 11.
Since the outer pipe 5 and the inner pipe 11 are fixed to each other, it is possible to eliminate the relative mutual microvibration, and it is possible to prevent deterioration of the cylindrical gasket 15 due to the microvibration of the shoulder portion 9.
【0023】ところで前記では断面円弧状の帯状部材3
7を弾性変形させたが、これに代えて図7に示すように
断面波形である帯状部材71を、前記と同様に弾性変形
させて、本発明に従う排気管継手72を形成してもよ
い。なお、図示の帯状部材71の断面波形は山が2個で
あるが、山が1個若しくは3個以上であってもよい。By the way, in the above description, the strip-shaped member 3 having an arcuate cross section is used.
Although 7 is elastically deformed, the exhaust pipe joint 72 according to the present invention may be formed by elastically deforming the band-shaped member 71 having a corrugated cross section as shown in FIG. 7 in the same manner as described above. The sectional waveform of the belt-shaped member 71 shown in the figure has two peaks, but the number of peaks may be one or three or more.
【0024】[0024]
【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具体例の断面図である。FIG. 1 is a sectional view of a preferred embodiment of the present invention.
【図2】図1に示す外管の左側面図である。FIG. 2 is a left side view of the outer tube shown in FIG.
【図3】図1に示す内管の左側面図である。FIG. 3 is a left side view of the inner tube shown in FIG.
【図4】図1に示す帯状部材と締付け手段との側面図で
ある。FIG. 4 is a side view of the belt-shaped member and the fastening means shown in FIG.
【図5】図4に示す帯状部材と締付け手段との正面図で
ある。FIG. 5 is a front view of the belt-shaped member and the tightening means shown in FIG.
【図6】図1に示す具体例の組立て製造方法の説明図で
ある。FIG. 6 is an explanatory view of the assembly manufacturing method of the specific example shown in FIG.
【図7】本発明に従う帯状部材の他の例を示す断面図で
ある。FIG. 7 is a cross-sectional view showing another example of the belt-shaped member according to the present invention.
1 排気管継手 5 外管 11 内管 15 円筒ガスケット 16 押圧、固定手段 1 Exhaust pipe joint 5 Outer pipe 11 Inner pipe 15 Cylindrical gasket 16 Pressing and fixing means
Claims (8)
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
ットを管軸に沿いかつ外管の肩部に向って押圧すると共
に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、他端が内管側の係止部に当接して外
管の拡径端部の外周面に配された帯状部材と、この帯状
部材を外管の拡径端部に締付けるべく、帯状部材の端部
に設けられた締付け手段とを具備し、円筒ガスケット
は、帯状部材により内管の肩部を介して外管の肩部に向
って押圧されており、帯状部材は、その管軸に沿う方向
の長さが伸ばされるように、締付け手段の締付けにより
弾性変形されており、外管の拡径端部は、帯状部材の締
付けにより内管の拡径部に押圧、固定されている排気管
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 shoulder via a shoulder and is inserted into the diameter-increased end of the outer pipe; Exhaust comprising: 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 and toward the shoulder of the outer tube and fixing the outer tube to the inner tube. In the pipe joint, the pressing and fixing means includes at least a pair of slit grooves formed along the pipe axis at the enlarged diameter end portion of the outer pipe, and an outer diameter provided at the enlarged diameter end portion of the outer pipe. The locking part on the tube side, the locking part on the inner tube side that extends outside the outer tube through each of the slits and is provided on the expanded diameter part of the inner tube, and the locking part on one end is the outer tube side. Abut the other A strip-shaped member whose end abuts on the locking portion on the inner pipe side and is arranged on the outer peripheral surface of the expanded-diameter end of the outer pipe, and an end of the strip-shaped member for tightening the strip-shaped member to the expanded-diameter end of the outer pipe. The cylindrical gasket is pressed by the belt-shaped member toward the shoulder portion of the outer tube through the shoulder portion of the inner tube, and the belt-shaped member is in a direction along the tube axis thereof. The exhaust pipe joint is elastically deformed by tightening the tightening means so that the length of the outer pipe is extended, and the expanded end of the outer pipe is pressed and fixed to the expanded part of the inner pipe by tightening the strip-shaped member. .
状又は断面波形である請求項1に記載の排気管継手。2. The exhaust pipe joint according to claim 1, wherein the shape of the belt-shaped member before tightening is an arcuate section or a corrugated section.
を有した耳部が形成されており、締付け手段は、耳部の
貫通孔に配されたボルトと、このボルトに螺合したナッ
トとを具備している請求項1又は2に記載の排気管継
手。3. An end portion having a through hole is formed at each of the end portions of the band-shaped member, and the tightening means is a bolt arranged in the through hole of the ear portion and screwed to the bolt. The exhaust pipe joint according to claim 1 or 2, further comprising a nut.
したがってその幅が狭くなっている請求項3に記載の排
気管継手。4. The exhaust pipe joint according to claim 3, wherein the width of the end portion of the strip-shaped member is narrower toward the ear.
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設けられた係止部をそれ
ぞれ具備した内管とを準備し、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係止部との間に
おいて外管の拡径端部の外周面に、管軸方向に弾性変形
可能な帯状部材を配し、この帯状部材を締め付け、この
締め付けにより帯状部材を弾性変形させて管軸方向に伸
ばして、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、帯状部材の一端を外管側
の係止部に当接させ、その他端を内管側の係止部に当接
させると共に、前記締め付けにより帯状部材を介して外
管の拡径端部を内管の拡径部に押圧、固定する排気管継
手の製造方法。5. An outer tube main body, a diameter-expanded end connected to the outer tube main body via a shoulder, and at least a pair of slit grooves formed along the tube axis at the diameter-expanded end. 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 pipe having the respective locking portions provided is prepared, and the end portion of the inner pipe into which the cylindrical gasket is inserted and the enlarged diameter portion of the inner pipe are divided into slits by the locking portions on the inner pipe side. The outer pipe and the cylindrical gasket is disposed in the annular space between the outer peripheral surface of the end portion of the inner pipe and the inner peripheral surface of the enlarged diameter end portion of the outer pipe. The strip-shaped member that is inserted into the expanded end portion of the outer pipe and is elastically deformable in the axial direction of the pipe on the outer peripheral surface of the expanded end portion of the outer pipe between the outer pipe-side locking portion and the inner pipe-side locking portion. Distribute Then, the band-shaped member is tightened, the band-shaped member is elastically deformed by this tightening and stretched in the pipe axis direction, so that the cylindrical gasket is pressed toward the shoulder of the outer pipe through the shoulder of the inner pipe, One end of the strip-shaped member is brought into contact with the locking portion on the outer pipe side, and the other end is brought into contact with the locking portion on the inner pipe side. A method for manufacturing an exhaust pipe joint, in which the pipe is pressed and fixed to the expanded portion of the pipe.
状又は断面波形である請求項5に記載の排気管継手の製
造方法。6. The method of manufacturing an exhaust pipe joint according to claim 5, wherein the shape of the belt-shaped member before tightening is an arcuate section or a corrugated section.
を有した耳部が形成されており、耳部を互いに接近させ
て帯状部材を締め付ける請求項5又は6に記載の排気管
継手の製造方法。7. The exhaust pipe joint according to claim 5, wherein each of the end portions of the strip-shaped member is formed with an ear portion having a through hole, and the strip-shaped member is fastened by bringing the ear portions close to each other. Manufacturing method.
したがってその幅が狭くなっている請求項7に記載の排
気管継手。8. The exhaust pipe joint according to claim 7, wherein the width of the vicinity of the end of the strip-shaped member becomes narrower toward the ear.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10340994A JP3275531B2 (en) | 1994-04-18 | 1994-04-18 | Exhaust pipe joint and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10340994A JP3275531B2 (en) | 1994-04-18 | 1994-04-18 | Exhaust pipe joint and method of manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07286515A true JPH07286515A (en) | 1995-10-31 |
JP3275531B2 JP3275531B2 (en) | 2002-04-15 |
Family
ID=14353260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10340994A Expired - Fee Related JP3275531B2 (en) | 1994-04-18 | 1994-04-18 | Exhaust pipe joint and method of manufacturing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3275531B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109915248A (en) * | 2019-03-21 | 2019-06-21 | 福建德普柯发电设备有限公司 | The diesel generating set with detachable exhaust system for data operation center |
CN112815236A (en) * | 2021-01-29 | 2021-05-18 | 邓华平 | Multifunctional water drainage joint |
-
1994
- 1994-04-18 JP JP10340994A patent/JP3275531B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109915248A (en) * | 2019-03-21 | 2019-06-21 | 福建德普柯发电设备有限公司 | The diesel generating set with detachable exhaust system for data operation center |
CN109915248B (en) * | 2019-03-21 | 2020-07-17 | 福建德普柯发电设备有限公司 | Diesel generator set with detachable tail gas system for data operation center |
CN112815236A (en) * | 2021-01-29 | 2021-05-18 | 邓华平 | Multifunctional water drainage joint |
Also Published As
Publication number | Publication date |
---|---|
JP3275531B2 (en) | 2002-04-15 |
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