JPH04370315A - Flexible pipe device for exhaust pipe - Google Patents
Flexible pipe device for exhaust pipeInfo
- Publication number
- JPH04370315A JPH04370315A JP3169110A JP16911091A JPH04370315A JP H04370315 A JPH04370315 A JP H04370315A JP 3169110 A JP3169110 A JP 3169110A JP 16911091 A JP16911091 A JP 16911091A JP H04370315 A JPH04370315 A JP H04370315A
- Authority
- JP
- Japan
- Prior art keywords
- support cover
- bellows
- pin
- cap
- wire mesh
- 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
- 239000000463 material Substances 0.000 claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- 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
- F01N13/1811—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body with means permitting relative movement, e.g. compensation of thermal expansion or vibration
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Joints Allowing Movement (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、車両排気管に用いられ
るフレキシブルパイプ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible pipe device used in a vehicle exhaust pipe.
【０００２】0002
【従来の技術】本出願人により、先に、実願平２−２１
８４１号として、排気管用フレキシブルパイプ装置が提
案された。その排気管用フレキシブルパイプ装置は、図
７に示すように、ベローズ１の一端に第１のサポートカ
バー２を、ベローズの他端に第２のサポートカバー３を
、それぞれ固定し、第１のサポートカバー２にピン４を
取付け、第２のサポートカバー３にキャップ５を取付け
、ピンを取付けた第１のサポートカバーとキャップを取
付けた第２のサポートカバーとの間に形成される空間に
、ワイヤメッシュから一体に形成されたハット状（鍔付
き帽子状）の緩衝材６を設けたものから構成されていた
。[Prior Art] The present applicant previously filed a Utility Application No. 2-21
No. 841 proposed a flexible pipe device for an exhaust pipe. As shown in FIG. 7, this flexible pipe device for an exhaust pipe has a first support cover 2 fixed to one end of a bellows 1, a second support cover 3 fixed to the other end of the bellows, and a first support cover 2 fixed to the other end of the bellows 1. A pin 4 is attached to the second support cover 3, a cap 5 is attached to the second support cover 3, and a wire mesh is installed in the space formed between the first support cover to which the pin is attached and the second support cover to which the cap is attached. A hat-shaped (brimmed hat-shaped) cushioning material 6 integrally formed from the above was provided.
【０００３】0003
【発明が解決しようとする課題】しかし、上述のハット
状緩衝材６の構造では、プレス成形時にハット状の筒状
部のワイヤメッシュ密度を十分に確保することが困難で
ある。このハット状の筒状部は軸受として最も厳しい条
件で使用される部位であるので、密度不足によって、筒
状部つぶれ、へたりによるピン連結部のガタが発生しや
すい。However, with the structure of the hat-shaped cushioning material 6 described above, it is difficult to ensure a sufficient wire mesh density in the hat-shaped cylindrical portion during press molding. Since this hat-shaped cylindrical portion is used as a bearing under the most severe conditions, lack of density tends to cause the cylindrical portion to collapse and cause looseness in the pin connection portion due to settling.
【０００４】本発明は、十分な密度をもたせて形成する
ことが可能なワイヤメッシュ緩衝材構造を有する排気管
用フレキシブルパイプ装置を提供することを目的とする
。SUMMARY OF THE INVENTION An object of the present invention is to provide a flexible pipe device for an exhaust pipe having a wire mesh cushioning material structure that can be formed with sufficient density.
【０００５】[0005]
【課題を解決するための手段】上記目的は、本発明によ
れば、排気管用フレキシブルパイプ装置が、次の手段を
備えることによって達成される。すなわち、第１の端部
および第２の端部を有するベローズ、一端が前記ベロー
ズの第１の端部に固定され他端が前記ベローズの外側で
前記ベローズの第２の端部に向かって延びる第１のサポ
ートカバー、一端が前記ベローズの第２の端部に固定さ
れ他端が前記第１のサポートカバーの外側で前記ベロー
ズの第１の端部に向かって延びる第２のサポートカバー
、前記第１のサポートカバーに取付けられ前記第１のサ
ポートカバーからベローズ軸芯と直角方向にベローズ半
径方向外方に延び前記第２のサポートカバーに形成した
切欠を挿通して前記第２のサポートカバーより外側に延
びる円筒状部を有するピン、前記ピンを該ピンの外側か
ら覆うようにして前記第２のサポートカバーに取付けら
れたキャップ、および前記ピンを取付けた前記第１のサ
ポートカバーと前記キャップを取付けた前記第２のサポ
ートカバーとの間に形成される空間に設けられ互いに別
体に形成されたワイヤメッシュから成る鍔部と筒部とを
有するワイヤメッシュから成る緩衝材。[Means for Solving the Problems] According to the present invention, the above object is achieved by providing a flexible pipe device for an exhaust pipe with the following means. namely, a bellows having a first end and a second end, one end being secured to the first end of the bellows and the other end extending outside of the bellows towards the second end of the bellows. a first support cover; a second support cover having one end fixed to the second end of the bellows and the other end extending outside the first support cover toward the first end of the bellows; The second support cover is attached to the first support cover, extends outward in the bellows radial direction from the first support cover in a direction perpendicular to the bellows axis, and is inserted through a notch formed in the second support cover. A pin having a cylindrical portion extending outward, a cap attached to the second support cover so as to cover the pin from the outside, and the first support cover to which the pin is attached and the cap. A cushioning material made of a wire mesh and having a flange made of a wire mesh and a cylinder part formed separately from each other and provided in a space formed between the attached second support cover.
【０００６】[0006]
【作用】上記本発明の排気管用フレキシブルパイプ装置
では、鍔部と筒部のワイヤメッシュが互いに分割形成さ
れているため、製造時における筒部ワイヤメッシュの引
張りがなくなり、十分な密度をもって、しかも均一に筒
部ワイヤメッシュを成形することが可能になる。その結
果、軸受緩衝材として大きな荷重を受けてもへたりを生
じることがなく、ガタを生じない。[Function] In the above-described flexible pipe device for an exhaust pipe of the present invention, the wire mesh of the collar portion and the cylindrical portion are formed separately, so that the tension of the cylindrical wire mesh during manufacturing is eliminated, and the wire mesh of the cylindrical portion has sufficient density and uniformity. It becomes possible to form the cylindrical wire mesh. As a result, even when subjected to a large load as a bearing cushioning material, it does not sag or rattle.
【０００７】[0007]
【実施例】図１−図３は本発明の第１実施例（シングル
タイプ）を示し、図４−図６は本発明の第２実施例（デ
ュアルタイプ）を示す。両実施例について共通する部材
には同一の符号を付してある。1 to 3 show a first embodiment (single type) of the present invention, and FIGS. 4 to 6 show a second embodiment (dual type) of the present invention. Components common to both embodiments are given the same reference numerals.
【０００８】まず、両実施例についての共通構成を説明
する。排気管用フレキシブルパイプ装置は、総じて、ベ
ローズ１０、第１のサポートカバー２０、第２のサポー
トカバー３０、ピン４０、キャップ５０、および緩衝材
６０から成る。ベローズ１０は、第１の端部１１と、そ
れと反対側の第２の端部１２と、第１、第２の端部を連
結する蛇腹部１３とを有する。第１、第２の端部１１、
１２には、それぞれ排気管（図示せず）が挿入され、ベ
ローズと溶接により固定される。First, the common configuration of both embodiments will be explained. The flexible pipe device for an exhaust pipe generally includes a bellows 10, a first support cover 20, a second support cover 30, a pin 40, a cap 50, and a cushioning material 60. The bellows 10 has a first end 11, a second end 12 opposite thereto, and a bellows portion 13 connecting the first and second ends. first and second ends 11;
An exhaust pipe (not shown) is inserted into each of the holes 12 and fixed to the bellows by welding.
【０００９】第１のサポートカバー２０は、第１の端部
２１と、該第１の端部２１より大径の第２の端部２２と
、第１の端部２１と第２の端部２２を連結する拡径部２
３とを有する。第１のサポートカバー２０の第１の端部
２１は、ベローズ１０の第１の端部１１および排気管（
図示せず）に、全周溶接により固定される。第１のサポ
ートカバー２０の第２の端部２２は、ベローズ１０の外
側でベローズの第２の端部１２に向かって延び、ベロー
ズ蛇腹部１３を外周側から覆う。第１のサポートカバー
２０の、ベローズ蛇腹部１３の外側に対応する位置には
、ベローズの直径の延長線上に、一対の穴が形成され、
ここにピン４０、４０が挿入、固定される。The first support cover 20 has a first end 21, a second end 22 having a larger diameter than the first end 21, and a first end 21 and a second end. Expanded diameter part 2 connecting 22
3. The first end 21 of the first support cover 20 is connected to the first end 11 of the bellows 10 and the exhaust pipe (
(not shown) by welding the entire circumference. The second end 22 of the first support cover 20 extends toward the second end 12 of the bellows 10 outside the bellows 10 and covers the bellows bellows portion 13 from the outer peripheral side. A pair of holes are formed in the first support cover 20 at positions corresponding to the outside of the bellows bellows portion 13 on an extension of the diameter of the bellows,
Pins 40, 40 are inserted and fixed here.
【００１０】第２のサポートカバー３０は、第１の端部
３１と、該第１の端部３１より大径の第２の端部３２と
、第１の端部３１と第２の端部３２を連結する拡径部３
３とを有する。第２のサポートカバー３０の第１の端部
３１はベローズ１０の第２の端部１２および排気管（図
示せず）に、全周溶接により固定される。第２のサポー
トカバー３０の第２の端部３２は、ベローズ１０の外側
でかつ第１のサポートカバー２０の外側でベローズの第
１の端部１１に向かって延びる。第２のサポートカバー
３０の第２の端部３２は、第１のサポートカバー２０の
第２の端部２２よりも大径であり、内周側に第１のサポ
ートカバー２０の第２の端部２２を受入れる。The second support cover 30 has a first end 31, a second end 32 having a larger diameter than the first end 31, and a first end 31 and a second end. Expanded diameter part 3 connecting 32
3. The first end 31 of the second support cover 30 is fixed to the second end 12 of the bellows 10 and the exhaust pipe (not shown) by welding the entire circumference. The second end 32 of the second support cover 30 extends outside the bellows 10 and outside the first support cover 20 towards the first end 11 of the bellows. The second end 32 of the second support cover 30 has a larger diameter than the second end 22 of the first support cover 20, and the second end 32 of the first support cover 20 has a larger diameter than the second end 22 of the first support cover 20. Part 22 is accepted.
【００１１】第２のサポートカバー３０の、第１のサポ
ートカバー２０に形成したピン穴の外側に対応する部位
には、一対の切欠３４、３４が形成されている。この切
欠３４は、たとえば図２に示すように、第２のサポート
カバー３０の第２の端部３２側の端から第１の端部３１
側に向かって延びる平行切欠部３４ａと、平行切欠部３
４ａの巾より大径の部分円形部３４ｂとを組合せた形状
を有する。この切欠３４の部分円形部３４ｂにピン４０
が挿通される。平行切欠部３４ａより大径の部分円形部
３４ｂを設けたことによって、部分円形部３４ｂと同径
の外形を有するキャップ５０を部分円形部３４ｂに嵌入
したときにキャップ５０が平行切欠部３４ａの方向にず
れるのを防止でき、キャップ５０の位置決めが容易にな
る。A pair of notches 34, 34 are formed in the second support cover 30 at a portion corresponding to the outside of the pin hole formed in the first support cover 20. For example, as shown in FIG. 2, this notch 34 extends from the second end 32 side of the second support cover 30 to the first end
A parallel notch 34a extending toward the side and a parallel notch 3
It has a shape that is a combination of a partially circular portion 34b having a larger diameter than the width of the portion 4a. A pin 40 is attached to the partially circular portion 34b of this notch 34.
is inserted. By providing the partially circular part 34b having a larger diameter than the parallel notch 34a, when the cap 50 having the same outer diameter as the partially circular part 34b is fitted into the partially circular part 34b, the cap 50 is directed toward the parallel notch 34a. It is possible to prevent the cap 50 from shifting, and the positioning of the cap 50 is facilitated.
【００１２】ピン４０は鍔部４１と円筒状部４２とから
成る。円筒状部４２の鍔部４１と反対側は開放しており
、底をもたない。この底無し構造により、ピン成形時に
おいて円筒状部４２の長さを長くでき、軸受面積を大に
して緩衝材６０にかかる単位面積当り荷重を減少させる
。ピン４０は第１のサポートカバー２０のピン穴に内か
らさし込まれ、鍔部４１を第１のサポートカバー２０の
内周面に当接した状態で、第１のサポートカバー２０に
溶接により固定される。ピン４０の円筒状部４２は第１
のサポートカバー２０のピン穴を挿通して外側に延び、
第２のサポートカバー３０の切欠３４の部分円形部３４
ｂを遊隙をもって挿通してさらに外側に延びる。ピン４
０の外径は切欠３４の平行部３４ａの巾より小であり、
第２のサポートカバー３０と第１のサポートカバー２０
を組付けるときに、ピン４０を平行部３４ａを通して部
分円形部３４ｂにベローズの軸方向に入れる。The pin 40 consists of a collar portion 41 and a cylindrical portion 42. The side of the cylindrical portion 42 opposite to the collar portion 41 is open and has no bottom. This bottomless structure allows the length of the cylindrical portion 42 to be increased during pin forming, thereby increasing the bearing area and reducing the load per unit area applied to the cushioning material 60. The pin 40 is inserted into the pin hole of the first support cover 20 from inside, and is welded to the first support cover 20 with the flange 41 in contact with the inner peripheral surface of the first support cover 20. Fixed. The cylindrical portion 42 of the pin 40 is the first
is inserted through the pin hole of the support cover 20 and extends outward;
Partial circular portion 34 of notch 34 of second support cover 30
b with some play and extends further outward. pin 4
The outer diameter of 0 is smaller than the width of the parallel part 34a of the notch 34,
Second support cover 30 and first support cover 20
When assembling the bellows, the pin 40 is inserted into the partially circular part 34b through the parallel part 34a in the axial direction of the bellows.
【００１３】キャップ５０は円筒状部５１と底部５２と
を有し、円筒状部５１の底部５２と反対側端にフランジ
を有さない。キャップ５０は、ピン４０を間隔をもって
外側から覆う。キップの開放側端部の外周面を第２のサ
ポートカバー３０の切欠３４の部分円筒部３４ｂに嵌入
させ、円筒状部５１の端面を緩衝材６０の鍔部に当接さ
せた状態で、キャップ５０を第２のサポートカバー３０
に溶接により固定する。キャップ５０はフランジをもた
ない構造としたために切欠３４への嵌入が可能になり、
かつキャップ５０成形時に円筒状部５１の長さを長くす
ることができ、緩衝材６０にかかる面圧を減少させるこ
とができる。The cap 50 has a cylindrical portion 51 and a bottom portion 52, and has no flange at the end of the cylindrical portion 51 opposite to the bottom portion 52. The cap 50 covers the pin 40 from the outside with a space therebetween. The outer circumferential surface of the open end of the cap is fitted into the partial cylindrical portion 34b of the notch 34 of the second support cover 30, and the end surface of the cylindrical portion 51 is in contact with the flange of the cushioning material 60, and the cap is closed. 50 to the second support cover 30
Fixed by welding. Since the cap 50 has a structure without a flange, it can be fitted into the notch 34,
Moreover, the length of the cylindrical portion 51 can be increased during molding of the cap 50, and the surface pressure applied to the cushioning material 60 can be reduced.
【００１４】緩衝材６０は、ピン４０を取付けた第１の
サポートカバー２０と、キャップ５０を取付けた第２の
サポートカバー３０との間に形成される空間に設けられ
る。緩衝材６０は、ワイヤメッシュの成形材から成り、
互いに別体に形成された鍔部６１と筒部６２とから成る
。筒部６２は底をもたず、両端が開放されている。鍔部
６１と筒部６２とを別体に成形できるので、従来のよう
な板状メッシュ２から筒部をプレス成形するときに生じ
るような引張りによるワイヤメッシュの密度不足、不均
一は生じず、十分な密度をもちかつ均一なワイヤメッシ
ュ筒部６２を作製できる。また筒部６２を鍔部６１と別
に形成できるので、筒部６２の長さを長くでき、荷重受
面積を大にでき、面圧を減少できる。The cushioning material 60 is provided in a space formed between the first support cover 20 to which the pin 40 is attached and the second support cover 30 to which the cap 50 is attached. The cushioning material 60 is made of a wire mesh molded material,
It consists of a collar part 61 and a cylindrical part 62 that are formed separately from each other. The cylindrical portion 62 has no bottom and is open at both ends. Since the flange part 61 and the cylindrical part 62 can be molded separately, insufficient density and non-uniformity of the wire mesh due to tension, which occurs when the cylindrical part is press-molded from the plate-shaped mesh 2 as in the conventional case, does not occur. A wire mesh cylinder portion 62 having sufficient density and uniformity can be manufactured. Further, since the cylindrical portion 62 can be formed separately from the flange portion 61, the length of the cylindrical portion 62 can be increased, the load receiving area can be increased, and the surface pressure can be reduced.
【００１５】鍔部６１は、第１のサポートカバー２０の
外面と第２のサポートカバー３０の内面の間の環状空間
に配され、筒部６２はピン４０の外周面とキャップ５０
の内周面との間に形成される円筒状空間に配される。こ
の円筒状空間は、ピン４０および緩衝材６０が底無しで
形成されることにより、十分な長さに形成され、軸受と
して最も厳しい条件となる筒部６２の面圧を十分にさげ
ることができる。The flange portion 61 is arranged in an annular space between the outer surface of the first support cover 20 and the inner surface of the second support cover 30, and the cylindrical portion 62 is arranged between the outer peripheral surface of the pin 40 and the cap 50.
It is arranged in a cylindrical space formed between the inner circumferential surface of the This cylindrical space is formed with a sufficient length because the pin 40 and the buffer material 60 are formed without a bottom, and the surface pressure of the cylindrical portion 62, which is the most severe condition for a bearing, can be sufficiently reduced.
【００１６】なお、ベローズ１０の内周面には、排気ガ
ス流が凹凸するベローズ蛇腹部１３から流れ抵抗を受け
ないように、ベローズ１０の上流側の端部、図示例では
第２の端部１２から、下流側の端部、図示例では第１の
端部１１に向けて延びるなめらかな整流管７０が、設け
られている。整流管７０は、その一端をベローズ１０の
上流側端部内周に固定されている。The inner peripheral surface of the bellows 10 is provided with an upstream end (in the illustrated example, a second end) so that the exhaust gas flow is not subjected to flow resistance from the uneven bellows bellows part 13. A smooth rectifier tube 70 is provided extending from 12 towards the downstream end, in the illustrated example the first end 11 . The rectifier tube 70 has one end fixed to the inner periphery of the upstream end of the bellows 10 .
【００１７】次に各実施例について異なる構造について
説明する。ただし、図において第１実施例に特有な構造
については符号にサフィックスＡを付してあり、第２実
施例に特有な構造については符号にサフィックスＢを付
してある。第１実施例においては、図１−図３に示すよ
うに、ベローズ１０の個数は１個であり、第１、第２の
サポートカバー２０Ａ、３０Ａは、断面がほぼ円形であ
る。これに対し、第２実施例においては、図４−図６に
示すように、ベローズ１０の個数は２個であり、第１、
第２のサポートカバー２０Ｂ、３０Ｂは、断面がほぼひ
ょうたん形をしている。Next, different structures of each embodiment will be explained. However, in the figures, the suffix A is attached to the reference numerals for structures specific to the first embodiment, and the suffix B is attached to the reference numerals for structures specific to the second embodiment. In the first embodiment, as shown in FIGS. 1 to 3, the number of bellows 10 is one, and the first and second support covers 20A and 30A have substantially circular cross sections. On the other hand, in the second embodiment, as shown in FIGS. 4 to 6, the number of bellows 10 is two, and the first,
The second support covers 20B, 30B have a substantially gourd-shaped cross section.
【００１８】次に、作用を説明する。フレキシブルパイ
プ装置にかかる荷重は、第１、第２のサポートカバー２
０、３０のピン４０による連結構造によって受け持たれ
、ベローズ１０に過大な荷重はかからない。ピン４０連
結構造はフレキシブルパイプ装置に屈曲を許しつつ２つ
の排気管を連結する。また、第１、第２のサポートカバ
ー２０、３０は、ベローズ１０を飛石、路面干渉、融雪
塩による塩害腐食等から保護する。Next, the operation will be explained. The load on the flexible pipe device is transferred to the first and second support covers 2.
This is supported by the connection structure using pins 40 of 0 and 30, and no excessive load is applied to the bellows 10. The pin 40 connection structure connects the two exhaust pipes while allowing the flexible pipe device to bend. Furthermore, the first and second support covers 20 and 30 protect the bellows 10 from flying stones, road surface interference, salt corrosion caused by melting snow, and the like.
【００１９】２つの排気管間にかかる荷重は、ピン４０
、キャップ５０、ワイヤメッシュ緩衝材６０から成る軸
受部にかかる。ワイヤメッシュ緩衝材６０は弾性を有し
クッションとして作用する他、振動に対して減衰として
も機能する。ワイヤメッシュ緩衝材６０を介装すること
により、ピン４０とキャップ５０、第１のサポートカバ
ー２０と第２のサポートカバー３０の直接の当りがなく
なり、異音の発生がなくなる。また、緩衝材６０がワイ
ヤメッシュから成るので、比較的高温がかかる排気管の
連結構造に用いても熱的問題は生じない。The load applied between the two exhaust pipes is
, a cap 50, and a wire mesh cushioning material 60. The wire mesh cushioning material 60 has elasticity and functions not only as a cushion but also as a damper against vibrations. By interposing the wire mesh cushioning material 60, there is no direct contact between the pin 40 and the cap 50, and the first support cover 20 and the second support cover 30, thereby eliminating the generation of abnormal noise. In addition, since the buffer material 60 is made of wire mesh, no thermal problem will occur even if it is used in an exhaust pipe connection structure that is exposed to relatively high temperatures.
【００２０】軸受部の信頼性、耐久性を向上させるには
、ワイヤメッシュ緩衝材６０自体の信頼性、耐久性を上
げること、および軸受の単位面積当り荷重を減少させる
ために軸受面積を大きくすることが有効である。In order to improve the reliability and durability of the bearing section, it is necessary to increase the reliability and durability of the wire mesh cushioning material 60 itself, and to increase the bearing area in order to reduce the load per unit area of the bearing. This is effective.
【００２１】従来はワイヤメッシュを板状にしたものを
プレス成形して図７のようなハット状にしていたが、製
作時に筒状部のワイヤメッシュ密度が疎となり、軸受と
して最も厳しい条件で使用される筒状部の密度を十分に
確保することができなかった。しかし、本発明では、緩
衝材６０の鍔部６０ａと筒部６０ｂとを別体としたので
、筒部６０ｂを板状ワイヤメッシュを丸めて作製でき、
あるいはパイプ状ワイヤメッシュの切断により作製でき
、十分な密度で、しかも均一な密度に製作できる。
また、プレスによるハット状成形におけるような無理な
成形がないため、ワイヤメッシュのほつれ等もない。こ
れらによって、緩衝材６０自体の信頼性、耐久性が高め
られる。Conventionally, a sheet of wire mesh was press-formed into a hat shape as shown in Fig. 7, but the density of the wire mesh in the cylindrical part became sparse during manufacturing, making it difficult to use it under the most severe conditions as a bearing. It was not possible to ensure sufficient density of the cylindrical part. However, in the present invention, since the flange portion 60a and the cylindrical portion 60b of the cushioning material 60 are made separately, the cylindrical portion 60b can be made by rolling a plate-shaped wire mesh.
Alternatively, it can be produced by cutting a pipe-shaped wire mesh, and can be produced with sufficient density and uniform density. Furthermore, since there is no forced forming as in hat-shaped forming by pressing, there is no fraying of the wire mesh. These improve the reliability and durability of the cushioning material 60 itself.
【００２２】軸受の単位面積あたりの荷重の軽減には種
々の構成が寄与する。緩衝材６０を筒部６２と鍔部６１
とに分割形成するので、筒部６２は鍔部６１から拘束さ
れることなく自由に長く作製でき、軸受面積を増加でき
る。たとえば、従来のようにプレスによるハット状成形
の場合は、円筒状部自体の長さも制約を受けるし、かつ
ハット状の先端の底板への移り変わり部及び鍔部への移
り変わり部にＲがかかるので円筒状部はその分短くなっ
ていたが、本発明の場合はそのような制約を受けない。Various configurations contribute to reducing the load per unit area of the bearing. The cushioning material 60 is attached to the cylinder part 62 and the collar part 61.
Since the cylindrical portion 62 is formed in two parts, the cylindrical portion 62 can be freely made long without being restricted by the flange portion 61, and the bearing area can be increased. For example, in the case of conventional hat-shaped forming using a press, the length of the cylindrical part itself is constrained, and R is applied to the transition part of the hat-shaped tip to the bottom plate and the transition part to the brim. Although the cylindrical portion has been shortened accordingly, the present invention is not subject to such restrictions.
【００２３】また、ピン４０も、従来の深絞り加工によ
る有底ハット状からパイプ材の鍔出し加工による底無し
の円筒状部４２としたので、円筒状部４２の長さを長く
でき、軸受面積を増加できる。また、キャップ５０も従
来のように鍔出し加工をしていないので、円筒状部５１
の長さを従来に比べて長くでき、軸受面積を増加できる
。つまり、従来のように鍔部をもつキャップの場合は、
鍔の内周にＲがかかり、ワイヤメッシュ保持面が一部全
周にわたって欠落し、かつサポートカバーの切欠部も部
分的にワイヤメッシュ保持面が欠落していたが、本発明
ではキャップ６０は鍔をもたず端部を緩衝材６０の鍔部
６１に当接させる構造としたので、ワイヤメッシュ保持
面に欠落は生じず、軸受面が増加する。これらの総合作
用により、軸受の単位面積あたりの荷重が軽減し、軸受
の信頼性、耐久性が向上する。Furthermore, since the pin 40 is changed from a bottomed hat shape formed by conventional deep drawing into a bottomless cylindrical portion 42 formed by flanging a pipe material, the length of the cylindrical portion 42 can be increased, and the bearing area can be increased. can be increased. Further, since the cap 50 is not flange-processed as in the conventional case, the cylindrical portion 51
The length of the bearing can be made longer than before, and the bearing area can be increased. In other words, in the case of a conventional cap with a flange,
The inner circumference of the brim was rounded, the wire mesh holding surface was partially missing over the entire circumference, and the wire mesh holding surface was partially missing from the notch of the support cover. Since the wire mesh has a structure in which the end portion is brought into contact with the flange portion 61 of the cushioning material 60, the wire mesh holding surface is not chipped and the bearing surface is increased. These combined effects reduce the load per unit area of the bearing and improve the reliability and durability of the bearing.
【００２４】[0024]
【発明の効果】本発明によれば、ワイヤメッシュから成
る緩衝材が鍔部と筒部を有し、かつ緩衝材の鍔部と筒部
とが別体に分割形成されているので、緩衝材筒部を十分
でかつ均一なワイヤメッシュ密度をもたせて作製するこ
とができ、フレキシブルパイプ装置の、とくに軸受部の
信頼性、耐久性が高まる。According to the present invention, the cushioning material made of wire mesh has a flange portion and a cylindrical portion, and the flange portion and the cylindrical portion of the cushioning material are separately formed. The cylindrical portion can be manufactured with a sufficient and uniform wire mesh density, and the reliability and durability of the flexible pipe device, especially the bearing portion, are increased.
【図１】本発明の第１実施例に係る排気管用フレキシブ
ルパイプ装置の断面図である。FIG. 1 is a sectional view of a flexible pipe device for an exhaust pipe according to a first embodiment of the present invention.
【図２】図１の装置の平面図である。FIG. 2 is a plan view of the device of FIG. 1;
【図３】図１の装置の正面図である。FIG. 3 is a front view of the device of FIG. 1;
【図４】本発明の第２実施例に係る排気管用フレキシブ
ル装置の一部を断面にして示した側面図である。FIG. 4 is a side view showing a part of a flexible exhaust pipe device in cross section according to a second embodiment of the present invention.
【図５】図４の装置の一部断面平面図である。FIG. 5 is a partially sectional plan view of the device of FIG. 4;
【図６】図４の装置の正面図である。FIG. 6 is a front view of the device of FIG. 4;
【図７】実願平２−２１８４１号で提案された排気管用
フレキシブルパイプ装置に準じた装置の断面図である。FIG. 7 is a sectional view of a device based on the flexible pipe device for an exhaust pipe proposed in Utility Application No. 2-21841.
１０ ベローズ １１ ベローズの第１の端部 １２ ベローズの第２の端部 ２０ 第１のサポートカバー ３０ 第２のサポートカバー ３４ 切欠 ３４ａ 切欠の平行部 ３４ｂ 切欠の部分円形部 ４０ ピン ４１ ピンの鍔部 ４２ ピンの円筒状部 ５０ キャップ ５１ キャップの円筒状部 ５２ キャップの底部 ６０ 緩衝材 ６１ 緩衝材の鍔部 ６２ 緩衝材の筒部 10 Bellows 11 First end of bellows 12 Second end of bellows 20 First support cover 30 Second support cover 34 Notch 34a Parallel part of notch 34b Partial circular part of notch 40 pin 41 Pin flange 42 Cylindrical part of pin 50 Cap 51 Cylindrical part of the cap 52 Bottom of cap 60 Cushioning material 61 Cushioning material flange 62 Cushioning material cylindrical part
Claims (1)
ベローズと、一端が前記ベローズの第１の端部に固定さ
れ他端が前記ベローズの外側で前記ベローズの第２の端
部に向かって延びる第１のサポートカバーと、一端が前
記ベローズの第２の端部に固定され他端が前記第１のサ
ポートカバーの外側で前記ベローズの第１の端部に向か
って延びる第２のサポートカバーと、前記第１のサポー
トカバーに取付けられ前記第１のサポートカバーからベ
ローズ軸芯と直角方向にベローズ半径方向外方に延び前
記第２のサポートカバーに形成した切欠を挿通して前記
第２のサポートカバーより外側に延びる円筒状部を有す
るピンと、前記ピンを該ピンの外側から覆うようにして
前記第２のサポートカバーに取付けられたキャップと、
前記ピンを取付けた前記第１のサポートカバーと前記キ
ャップを取付けた前記第２のサポートカバーとの間に形
成される空間に設けられ互いに別体に形成されたワイヤ
メッシュから成る鍔部と筒部とを有するワイヤメッシュ
から成る緩衝材と、から成る排気管用フレキシブルパイ
プ装置。1. A bellows having a first end and a second end, one end fixed to the first end of the bellows and the other end outside the bellows and a second end of the bellows. a first support cover extending toward the first end of the bellows; and a second support cover having one end secured to the second end of the bellows and the other end extending outside of the first support cover toward the first end of the bellows. and a notch formed in the second support cover that is attached to the first support cover and extends outward in the bellows radial direction perpendicular to the bellows axis from the first support cover. a pin having a cylindrical portion extending outward from a second support cover; and a cap attached to the second support cover so as to cover the pin from the outside of the pin;
A flange portion and a cylindrical portion made of wire mesh and formed separately from each other and provided in a space formed between the first support cover to which the pin is attached and the second support cover to which the cap is attached. A flexible pipe device for an exhaust pipe, comprising: a cushioning material made of wire mesh;
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3169110A JP2768060B2 (en) | 1991-06-14 | 1991-06-14 | Flexible pipe device for exhaust pipe |
| EP92305288A EP0519636B1 (en) | 1991-06-14 | 1992-06-09 | Flexible joint for an exhaust pipe |
| DE69205499T DE69205499T2 (en) | 1991-06-14 | 1992-06-09 | Flexible connection for an exhaust pipe. |
| US07/896,179 US5318329A (en) | 1991-06-14 | 1992-06-10 | Flexible joint for an exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3169110A JP2768060B2 (en) | 1991-06-14 | 1991-06-14 | Flexible pipe device for exhaust pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04370315A true JPH04370315A (en) | 1992-12-22 |
| JP2768060B2 JP2768060B2 (en) | 1998-06-25 |
Family
ID=15880489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3169110A Expired - Fee Related JP2768060B2 (en) | 1991-06-14 | 1991-06-14 | Flexible pipe device for exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2768060B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012518107A (en) * | 2009-02-16 | 2012-08-09 | マン・ディーゼル・アンド・ターボ・エスイー | Muffler for turbo machine or piston machine |
-
1991
- 1991-06-14 JP JP3169110A patent/JP2768060B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012518107A (en) * | 2009-02-16 | 2012-08-09 | マン・ディーゼル・アンド・ターボ・エスイー | Muffler for turbo machine or piston machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2768060B2 (en) | 1998-06-25 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |