JPH0352977Y2 - - Google Patents
Info
- Publication number
- JPH0352977Y2 JPH0352977Y2 JP1987060984U JP6098487U JPH0352977Y2 JP H0352977 Y2 JPH0352977 Y2 JP H0352977Y2 JP 1987060984 U JP1987060984 U JP 1987060984U JP 6098487 U JP6098487 U JP 6098487U JP H0352977 Y2 JPH0352977 Y2 JP H0352977Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- flexible pipe
- exhaust
- flexible
- pipes
- 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
Links
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Joints Allowing Movement (AREA)
- Exhaust Silencers (AREA)
Description
【考案の詳細な説明】
イ 考案の目的
イ−１ 産業上の利用分野
本考案は自動車用エンジン等の排気系に使用さ
れる排気管の連結装置に関する。[Detailed Description of the Invention] A. Purpose of the Invention A-1. Field of Industrial Application The present invention relates to an exhaust pipe coupling device used in the exhaust system of an automobile engine or the like.
イ−２ 従来技術
従来、自動車用エンジンの排気管には、エンジ
ンよりの振動及び走行時の路面環境からくる振動
を吸収するために振動吸収機能を有する連結装置
が介在されている。このような振動吸収装置とし
ては従来、軸方向に分割された排気管の対向端相
互を蛇腹状のフレキシブルパイプで連結して構成
されているのが一般的である。A-2 Prior Art Conventionally, a coupling device having a vibration absorbing function is interposed in the exhaust pipe of an automobile engine in order to absorb vibrations from the engine and vibrations coming from the road surface environment during driving. Conventionally, such a vibration absorbing device is generally constructed by connecting opposing ends of an exhaust pipe divided in the axial direction with a bellows-shaped flexible pipe.
イ−３ 本考案が解決しようとする問題点
前記の如く、排気管相互間を蛇腹状のフレキシ
ブルパイプを主体として連結するものにおいて、
そのフレキシブルパイプとして、その軸方向に対
し長尺のものを用いた場合と短尺のものを用いた
場合とを比較すると、排気管を同じ荷重で振動さ
せた場合、短尺のものは長尺のものに比べて短い
範囲で長尺の場合と同様の一定量分たわむため、
短尺のものにおいてはそのフレキシブルパイプの
各山部及び谷部での作用荷重が大きくなり、長尺
のものにおいてはその作用荷重が小さくなる。そ
のため、例えばフレキシブルパイプの山数を20山
としたものと、山数を10山としたものとの耐久比
較をした場合、第２図に示す如く、モーメント
M1でくり返し振動させた場合に、10山のものイ
においてはそのくり返し回数がN1でフレキシブ
ルパイプの機能を失ない、20山のものロにおいて
はN2のくり返し回数までフレキシブルパイプの
機能を維持する。このようなことから、従来のフ
レキシブルパイプは、耐久性維持より短尺のもの
が使用できず必然的に長尺なものが使用されてい
た。しかし、フレキシブルパイプは耐振性、耐熱
性、屈曲性を必要とすることから高価な材料が使
用されているため、従来の如く長尺なものを使用
することは構造コストが高くなる問題があつた。A-3 Problems to be Solved by the Present Invention As mentioned above, in a system in which exhaust pipes are connected mainly by a bellows-shaped flexible pipe,
Comparing the case where a long flexible pipe is used in the axial direction and the case where a short flexible pipe is used, when the exhaust pipe is vibrated with the same load, the short flexible pipe is compared to the long flexible pipe. Because it deflects by a certain amount in a shorter range than in the case of a long length,
In the case of a short flexible pipe, the applied load at each peak and valley of the flexible pipe becomes large, and in the case of a long flexible pipe, the applied load becomes small. Therefore, when comparing the durability of a flexible pipe with 20 threads and a flexible pipe with 10 threads, for example, as shown in Figure 2, the moment
When vibrating repeatedly with M 1 , the function of the flexible pipe is maintained until the number of repetitions is N 1 in the case of 10 mountains, and the function of the flexible pipe is maintained until the number of repetitions is N 2 in the case of 20 mountains. maintain. For this reason, conventional flexible pipes cannot be made short in order to maintain durability, so long ones have been inevitably used. However, since flexible pipes require vibration resistance, heat resistance, and flexibility, expensive materials are used, so using long pipes as in the past poses the problem of high structural costs. .
そこで本考案は、フレキシブルパイプのたわみ
量を制限してフレキシブルパイプに対する作用荷
重を小さくすることにより、短尺なフレキシブル
パイプであつても耐久性を向上させ、短尺なフレ
キシブルパイプの使用を可能にして製造コストの
低い排気管の連結装置を提案することを目的とす
るものである。 Therefore, the present invention improves the durability of even short flexible pipes by limiting the amount of deflection of the flexible pipe and reducing the load acting on the flexible pipe, making it possible to use short flexible pipes and manufacture them. The purpose of this invention is to propose a low-cost exhaust pipe coupling device.
ロ 考案の構成
ロ−１ 問題点を解決するための手段
本考案は前記の問題点を解決するために、連結
すべき排気管の一方の排気管に連結する内管１
と、他方の排気管に連結する外管４を設け、これ
らの内外管の対向端部を僅少の重合長をもつて遊
嵌するとともに、内管１には、その嵌合端部に緩
衝部材３をその外周面と端末面を覆うように被着
し、外管４にはその嵌合重合部４ｂの基部に規制
突部４ｃを形成し、更に前記内外管１，４の外周
部には蛇腹状に形成したフレキシブルパイプ８
を、その一端を前記内管１に、他端を外管４に対
しそれぞれ上記フレキシブルパイプ８を被覆した
ブレーダ９を介して被着したことを特徴とするも
のである。B. Structure of the invention B-1 Means for solving the problem In order to solve the above-mentioned problems, the present invention provides an inner pipe that connects to one of the exhaust pipes to be connected.
and an outer pipe 4 connected to the other exhaust pipe, the opposite ends of these inner and outer pipes are loosely fitted with a slight overlapping length, and the inner pipe 1 is provided with a buffer member at the fitted end. 3 is applied to cover the outer circumferential surface and end surface of the outer tube 4, a regulating protrusion 4c is formed at the base of the fitting overlapping portion 4b, and a regulating protrusion 4c is formed on the outer circumference of the inner and outer tubes 1, 4. Flexible pipe 8 shaped like a bellows
, one end of which is attached to the inner tube 1 and the other end of which is attached to the outer tube 4 via a braider 9 covered with the flexible pipe 8.
ロ−２ 実施例
第１図に示す本考案の実施例において、１は内
管で、その基部１ａは前方側排気管２に嵌合連結
するようになつており、その流通部１ｂは基部１
ａより小径に形成してその先端が開口されてい
る。３は異音発生を防止する緩衡部材で、前記流
通部１ｂにおける先端面と先端部の内外周面に亘
つて被着されている。該緩衡部材３は例えば、耐
振性、耐摩耗性を有するワイヤメツシユを用い
る。４は外管で、その基部４ａは後方側排気管５
に嵌合連結するようになつており、その前部４ｂ
は前記内管１の先端部外周に設けた緩衡部材３の
外周面に対して、常態において、所定の間隙６を
有するように嵌合している。４ｃは前記外管４の
１部を内方へ折曲して形成した規制突部で、常態
において、前記緩衡部材３との間に所定の間隔７
を有するような位置において全周に亘つて設けら
れている。８は前記内外管１，４の外周に設けた
フレキシブルパイプで、その前端部８ａが前記内
管１における基部１ａの外周面に嵌合され、後端
部８ｂが前記外管４における基部４ａの外周面に
嵌合され、これら前端部８ａと後端部８ｂ間を、
蛇腹状に屈曲してフレキシブルに形成されてい
る。９は前記フレキシブルパイプ８の外周を被覆
したブレーダで、その前後端部９ａ，９ｂが前記
フレキシブルパイプ８の前後端部８ａ，８ｂの外
周面に嵌合している。１０，１１はカラーで、前
記フレキシブルパイプ８とブレーダ９の夫々の端
部を内外管１，４の外面に対して締付け固着して
いる。RO-2 Embodiment In the embodiment of the present invention shown in FIG.
It is formed to have a smaller diameter than a, and its tip is open. Reference numeral 3 denotes a buffering member for preventing abnormal noise generation, which is attached to the distal end surface of the flow section 1b and the inner and outer circumferential surfaces of the distal end portion. The buffering member 3 uses, for example, a wire mesh having vibration resistance and wear resistance. 4 is an outer pipe, the base 4a of which is the rear exhaust pipe 5
The front part 4b
is fitted onto the outer peripheral surface of the buffering member 3 provided on the outer periphery of the tip of the inner tube 1 with a predetermined gap 6 in the normal state. Reference numeral 4c denotes a regulating protrusion formed by bending a part of the outer tube 4 inward, and in a normal state, there is a predetermined distance 7 between the regulating protrusion and the buffering member 3.
It is provided around the entire circumference at such a position that it has . Reference numeral 8 denotes a flexible pipe provided on the outer periphery of the inner and outer tubes 1 and 4, the front end 8a of which is fitted to the outer circumferential surface of the base 1a of the inner tube 1, and the rear end 8b of the flexible pipe fitted to the outer circumference of the base 4a of the outer tube 4. Fitted on the outer peripheral surface, between the front end portion 8a and the rear end portion 8b,
It is bent like a bellows and is flexible. Reference numeral 9 denotes a blader that covers the outer periphery of the flexible pipe 8, and its front and rear ends 9a and 9b fit into the outer peripheral surfaces of the front and rear ends 8a and 8b of the flexible pipe 8. Reference numerals 10 and 11 denote collars, which fix the respective ends of the flexible pipe 8 and braider 9 to the outer surfaces of the inner and outer tubes 1 and 4.
以上のようであるから、前方側排気管２と後方
側排気管５の相対位置が、その軸方向と直交する
方向に移動するように振動した場合には、内外管
１，４の相互の嵌合部が相互に当接するまでの小
さい振幅の間においてはフレキシブルパイプ８
が、その振幅に比例した量だけたわむ。そして、
内外管１，４の相互の嵌合部が相互に当接する
と、それ以上の振幅による振動は該嵌合部によつ
て規制され、フレキシブルパイプ８に大きなたわ
みを発生させない。また、両排気管２，５が、そ
の軸方向に対して相互に近接するように振動する
場合において、所定以上に近接すると内管１にお
ける先端が緩衡部材３を介して外管４の規制突起
４ｃに当接し、それ以上の振動を規制する。尚、
前記内外管１，４の相互の当接時には、緩衡部材
３の存在によつて異音の発生が防止される。 As described above, when the relative positions of the front exhaust pipe 2 and the rear exhaust pipe 5 vibrate in a direction perpendicular to their axial directions, the mutual fitting of the inner and outer pipes 1 and 4 may occur. During the small amplitude until the joints come into contact with each other, the flexible pipe 8
is deflected by an amount proportional to its amplitude. and,
When the fitting portions of the inner and outer tubes 1 and 4 come into contact with each other, vibrations due to amplitudes greater than that are regulated by the fitting portions, and the flexible pipe 8 does not undergo large deflection. In addition, when both exhaust pipes 2 and 5 vibrate so as to be close to each other in the axial direction, if they approach each other more than a predetermined value, the tip of the inner pipe 1 will restrict the outer pipe 4 through the buffering member 3. It comes into contact with the protrusion 4c and restricts further vibration. still,
When the inner and outer tubes 1 and 4 come into contact with each other, the presence of the buffer member 3 prevents the generation of abnormal noise.
第３図は本考案の構造においてフレキシブルパ
イプ８の山数を10山としたものハと、従来構造に
おいてフレキシブルパイプの山数を20山としたも
のニとのくり返し疲労の実験結果を示すもので、
一方の排気管側を固定し、他方の排気管を、これ
に所定のモーメントM1を作用させてくり返し振
動させた結果を示す。これによれば、第３図の如
く、フレキシブルパイプとしての機能がなくなる
までのモーメントM1による振動くり返り回数N2
は、本案のものと従来のものとがほぼ同じであつ
た。このことから、本案のものは、フレキシブル
パイプの全長が従来のものより半分であつても従
来と同様に十分耐久性があることが分かる。 Figure 3 shows the results of repeated fatigue experiments for the structure of the present invention in which the number of ridges in the flexible pipe 8 is 10 (c) and the conventional structure in which the number of ridges in the flexible pipe 8 is 20. ,
The results are shown in which one exhaust pipe side is fixed and the other exhaust pipe is repeatedly vibrated by applying a predetermined moment M 1 to it. According to this, as shown in Fig. 3, the number of vibration repetitions N 2 due to the moment M 1 until the flexible pipe loses its function is
The proposed method and the conventional method were almost the same. From this, it can be seen that even if the total length of the flexible pipe is half that of the conventional flexible pipe, the proposed flexible pipe has sufficient durability as the conventional flexible pipe.
ハ 考案の効果
以上のように本考案によれば、軸方向と直交す
る方向へのフレキシブルパイプの振幅が規制され
るは勿論、軸方向の振動に対しても規制突起４ｃ
の存在により、フレキシブルパイプのたわみ量が
制限される。そのため、フレキシブルパイプが従
来のものに比べて短尺であつてもこれに対する大
きな荷重の発生を阻止して耐久性を従来の長尺の
ものと同等に維持させることができる。したがつ
て、フレキシブルパイプを従来のものに比べて短
尺なものに形成して、その材料の使用量を低減
し、連結装置の製造コストの低減化を図ることが
できる。C. Effects of the invention As described above, according to the invention, not only the amplitude of the flexible pipe in the direction orthogonal to the axial direction is regulated, but also the regulation protrusion 4c is regulated against vibrations in the axial direction.
, the amount of deflection of the flexible pipe is limited. Therefore, even if the flexible pipe is shorter than a conventional flexible pipe, it is possible to prevent a large load from being applied to the flexible pipe and maintain durability equivalent to that of a conventional long flexible pipe. Therefore, the flexible pipe can be made shorter than conventional ones, the amount of material used can be reduced, and the manufacturing cost of the coupling device can be reduced.
更に本案においては、内管１の嵌合端部に緩衝
部材３をその外周面と端末面を覆うように被着し
たので内外管の直交、軸方向何れの振動による内
外管相互の当接時も異音の発生を防止できる利点
がある。 Furthermore, in the present invention, since the buffer member 3 is attached to the fitting end of the inner tube 1 so as to cover the outer peripheral surface and the end surface thereof, when the inner and outer tubes come into contact with each other due to vibrations in either the orthogonal direction or the axial direction of the inner and outer tubes, It also has the advantage of preventing the occurrence of abnormal noise.
第１図は本考案の実施例を示す側断面図、第２
図及び第３図はフレキシブルパイプの耐久性を示
すもので夫々モーメントと振動のくり返し回数と
の関係を示す特性図である。
１，４……内外管、２，５……排気管、６……
間隙、８……フレキシブルパイプ。
Fig. 1 is a side sectional view showing an embodiment of the present invention;
3 and 3 show the durability of the flexible pipe, and are characteristic diagrams showing the relationship between the moment and the number of repetitions of vibration, respectively. 1, 4... Inner and outer pipes, 2, 5... Exhaust pipe, 6...
Gap, 8...Flexible pipe.
Claims (1)
管１と、他方の排気管に連結する外管４を設け、
これらの内外管の対向端部を僅少の重合長をもつ
て遊嵌するとともに、内管１には、その嵌合端部
に緩衝部材３をその外周面と端末面を覆うように
被着し、外管４にはその嵌合重合部４ｂの基部に
規制突部４ｃを形成し、更に前記内外管１，４の
外周部には蛇腹状に形成したフレキシブルパイプ
８を、その一端を前記内管１に、他端を外管４に
対しそれぞれ上記フレキシブルパイプ８を被覆し
たブレーダ９を介して被着したことを特徴とする
排気管の連結装置。 An inner pipe 1 connected to one of the exhaust pipes to be connected and an outer pipe 4 connected to the other exhaust pipe are provided,
The opposing ends of these inner and outer tubes are loosely fitted with a slight overlapping length, and a buffer member 3 is attached to the fitted end of the inner tube 1 so as to cover its outer peripheral surface and end surface. A regulating protrusion 4c is formed on the outer tube 4 at the base of its fitting and overlapping portion 4b, and a flexible pipe 8 formed in a bellows shape is provided on the outer periphery of the inner and outer tubes 1 and 4, and one end thereof is connected to the inner tube. An exhaust pipe connection device characterized in that the other end of the pipe 1 is attached to the outer pipe 4 via braiders 9 each covered with the flexible pipe 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987060984U JPH0352977Y2 (en) | 1987-04-21 | 1987-04-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987060984U JPH0352977Y2 (en) | 1987-04-21 | 1987-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63166614U JPS63166614U (en) | 1988-10-31 |
| JPH0352977Y2 true JPH0352977Y2 (en) | 1991-11-19 |
Family
ID=30893900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987060984U Expired JPH0352977Y2 (en) | 1987-04-21 | 1987-04-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352977Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06218608A (en) * | 1993-01-25 | 1994-08-09 | Hitachi Seiko Ltd | Tool holder |
| JP6218223B2 (en) * | 2013-10-01 | 2017-10-25 | 日工株式会社 | Asphalt plant dryer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849374U (en) * | 1981-09-30 | 1983-04-02 | ソニー株式会社 | magnetic sheet jacket |
-
1987
- 1987-04-21 JP JP1987060984U patent/JPH0352977Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5849374U (en) * | 1981-09-30 | 1983-04-02 | ソニー株式会社 | magnetic sheet jacket |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63166614U (en) | 1988-10-31 |
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