WO2003071108A1 - Structure de connexion de tuyau d'echappement d'un vehicule automobile et ressort helicoidal a utiliser dans celle-ci - Google Patents

Structure de connexion de tuyau d'echappement d'un vehicule automobile et ressort helicoidal a utiliser dans celle-ci Download PDF

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Publication number
WO2003071108A1
WO2003071108A1 PCT/JP2002/001533 JP0201533W WO03071108A1 WO 2003071108 A1 WO2003071108 A1 WO 2003071108A1 JP 0201533 W JP0201533 W JP 0201533W WO 03071108 A1 WO03071108 A1 WO 03071108A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
coil panel
exhaust pipe
wire
less
Prior art date
Application number
PCT/JP2002/001533
Other languages
English (en)
Japanese (ja)
Inventor
Hironobu Sasada
Takashi Yanagihara
Suekichi Hangeishi
Original Assignee
Suncall Corporation
Toyota Jidosha Kabushiki Kaisha
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP2000262255A priority Critical patent/JP2002071071A/ja
Application filed by Suncall Corporation, Toyota Jidosha Kabushiki Kaisha filed Critical Suncall Corporation
Priority to PCT/JP2002/001533 priority patent/WO2003071108A1/fr
Priority to US10/478,098 priority patent/US7093861B2/en
Publication of WO2003071108A1 publication Critical patent/WO2003071108A1/fr

Links

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
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/042—Wound springs characterised by the cross-section of the wire
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/125—Attachments or mountings where the end coils of the spring engage an axial insert
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • 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
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
    • F16L27/053—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces held in place by bolts passing through flanges

Definitions

  • the present invention relates to an exhaust pipe connection structure for an automobile and a coil spring used for the structure.
  • the present invention relates to a connection structure using a ball joint of an exhaust pipe of an automobile, and a coil panel used for the connection structure.
  • pole joints have been used as exhaust vibration joints in automobile exhaust lines. This is designed to absorb the vibration of the vehicle body and prevent excessive stress from acting on the exhaust part of the engine and the connection part of the exhaust pipe.
  • connection structure as described in Japanese Patent Application Laid-Open No. H10-1776777 and Utility Model Registration No. 2598461.
  • the exhaust pipe includes a first exhaust pipe 1 and a second exhaust pipe 2. Both trachea 1 and 2 are flexibly connected by a ball joint mechanism B.
  • the first exhaust pipe 1 projects the exhaust gas from the vehicle engine to the second exhaust pipe.
  • the first exhaust pipe 1 is called an exhaust manifold.
  • the second exhaust pipe 2 discharges the gas gas into the atmosphere.
  • a ball portion 3 having a spherical outer shape is formed on the second exhaust pipe 2 side.
  • a flare portion 5 is formed on the first exhaust pipe 1 side.
  • the flared portion 5 has an inner curved surface 4 adapted to the tiif ball portion 3.
  • the first exhaust pipe 1 and the second exhaust pipe 2 have a first flange portion 1a and a second flange portion 2a, respectively.
  • the first flange portion 1a and the second flange portion 2a have opposing flat surfaces. Openings lb and 2b are provided at positions of the two flanges ia2a facing each other so that a port member 8 described later penetrates.
  • the two flange portions 1a and 2a are connected and fixed by a connection mechanism C.
  • connection mechanism is provided at a plurality of positions on the first and second flange portions to connect the first and second flange portions.
  • One coupling mechanism C has a nut 7, a bolt member 8, and a coil panel 20.
  • the nut 7 is fixed by welding 9 around the opening 2 of the second flange 2a.
  • the bolt member 8 penetrates the openings 1b and 2b of the two flanges IUa and 2a.
  • One end 8 a of the port member 8 is inserted through the nut 7, screwed, and fixed.
  • the bolt member 8 is passed through the center of the winding of the coil spring 20.
  • the coil panel 20 is disposed between the other end (ie, head) 8b of the bolt member 8 and the first flange 1a.
  • the coil panel 20 presses the first exhaust pipe 1 toward the second exhaust pipe 2 via the first flange portion 1a.
  • the ball portion 3 slides on the inner curved surface 4 of the flare portion 5 and the first exhaust pipe 1 And the second exhaust pipe 2 can be bent.
  • the coil spring 20 maintains the close contact between the ball portion 3 and the inner curved surface 4 to prevent leakage of exhaust gas.
  • the coil panel 20 is formed by winding a wire having a circular cross section in a coil shape. Said koi If the diameter of the wire is d and the number of turns of the coil panel is ri, the height of the coil panel is nxd.
  • the length of the portion of the port member 8 penetrating through the coil must necessarily be longer than n X d. Therefore, the overall length of the bolt member 8 is increased, and the weight is relatively increased.
  • the present invention has been made in view of the above situation, and a first object of the present invention is to provide a coil panel capable of further reducing the weight of an exhaust pipe connection structure and a novel coil panel using the coil spring. It is to provide a simple exhaust pipe connection structure. Further, the second object is to reduce the cost of the connection structure of the exhaust pipe, and to provide a new exhaust pipe connection structure using the coil spring and the coil spring. Offer. Disclosure of the invention
  • the present invention has been made by focusing on an improvement in the structure of the coil spring, which has not been taken into account by the conventional countermeasures for light weight.
  • the coil of the present invention is formed by winding the following wire in a coil shape.
  • a cross section of the wire of the coil panel is a deformed cross section having a minor axis and a major axis such that the minor axis is in the direction in which the coil panel is compressed.
  • the dimensional ratio between the major axis and the minor axis is i
  • An exhaust pipe connection structure for an automobile of the present invention is an exhaust pipe connection structure using the coil panel of the present invention described above in order to achieve the above object.
  • the exhaust pipe connection structure for an automobile includes a first exhaust pipe having a first flange portion on one end side, a second exhaust pipe having a second flange portion on one end side, and a first exhaust pipe having the first and second exhaust pipes.
  • a ball joint mechanism provided at the end where the second flange portion is formed to connect the first and second exhaust pipes in a bendable manner, and to connect the first and second flange portions to each other.
  • Connection mechanisms provided at a plurality of positions of the first and second flange portions.
  • One of the connecting mechanisms penetrates the first flange portion of the knitting, and one is connected between the bolt member fixed to the second flange portion and the other end portion of the bolt member and the first flange portion. And a coil panel disposed in the panel.
  • the coil panel of the present invention described above is used as the coil panel.
  • FIG. 1 is a sectional view of an essential part showing an embodiment of an exhaust pipe connection structure according to the present invention.
  • FIG. FIG. 2 is a sectional view of a coil of the coil panel shown in FIG.
  • FIG. 3 is a side view of a coil panel formed by winding the wire having the flat cross section shown in FIG. 2 into a coil shape.
  • FIGS. 4 (a), 4 (b), 5 (a), and 5 (b) are graphs comparing the characteristics of the coil panel of the present invention and the conventional coil panel.
  • FIG. 6 is a sectional view of an essential part showing an example of a conventional exhaust pipe connection structure. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIGS. 1 to 5 Elements having the same functions as the elements described in FIG. 6 are denoted by the same reference numerals, and description thereof is omitted.
  • FIG. 1 what differs from FIG. 6 is the coil spring.
  • reference numeral 6 denotes a coil spring.
  • the vehicle exhaust pipe connection structure of the present invention is an exhaust pipe connection structure using the coil panel of the present invention.
  • the coil spring 6 of the present invention is formed by winding a wire into a coil as shown in FIG.
  • the cross section of the wire has a deformed cross-sectional shape that is deformed such that it has a shorter diameter in the direction A in which the coil spring 6 is compressed and has a longer diameter in a direction crossing the direction A in which the coil panel 6 is compressed.
  • the deformed cross-sectional shape of the wire is a flat cross-sectional shape having two linear portions 6c which are arranged in parallel and extend in the major axis direction.
  • the linear portion 6c is formed so as to cross the direction A in which the coil panel 6 is compressed.
  • the straight portion 6c in the cross section is continuous in the longitudinal direction of the wire to form a flat surface 6e on the wire (see FIG. 3).
  • the deformed cross-sectional shape of the wire has two arc portions 6d.
  • the two arc portions 6 are located between the straight portions 6c and connect the respective ends of the straight portions 6c.
  • the two arc portions 6d are curved so as to protrude from the two straight portions 6c.
  • the ratio (d 1 / d 2) between the major axis d 1 and the minor axis d 2 is preferably set in the range of 1.1 or more and 2.6 or less.
  • this ratio is smaller than 1.1, there is no difference in effect from a conventional wire having a circular cross section.
  • this ratio exceeds 2.6, the cross section of the wire becomes closer to a plate-like body, and the Né constant is reduced. Therefore, the number of windings of the coil panel must be increased, and as a result, the height of the coil panel may be increased. It is most preferable to set the ratio (d 1 / d 2) between the major axis d 1 and the minor axis d 2 in a range of 1.3 or more and 2.0 or less.
  • Examples of a method for manufacturing the wire of the coil panel 6 include the following method. A method in which a conventionally used wire having a circular cross section is cold-rolled by being passed between a pair of upper and lower rolling rollers. Alternatively, the wire having the circular cross section is cold drawn.
  • the hardness of the wire is increased. Therefore, strength, fatigue characteristics, and resistance to sag are improved. As a result, high-quality wires can be obtained at low prices.
  • the dimensional ratio (d3Zd1) of the length of the linear portion 6c of the cross section (that is, the width of the flat surface 6e) to the major diameter d1 of d3 is set in the range of 0.4 or more and 0.9 or less. It is preferable that it is specified. If this value is smaller than 0.4, sufficient flatness and the effect of cold kneading cannot be obtained. On the other hand, if this value is larger than 0.9, the degree of flatness becomes too large and becomes closer to a plate-like body. Therefore, the appropriate panel There is a possibility that a constant cannot be obtained.
  • the ratio of the length (ie, the width of the flat surface) d3 of the linear portion 6c to the major diameter d1 is particularly preferably in a range of 0.5 or more and 0.8 or less.
  • the height of the coil panel in a state where the coil panel is compressed and the wires are in contact with each other is smaller than that of a conventional coil spring using a wire having a circular cross-section. , Lower.
  • the total weight of the bolt members and the coil panel can be reduced to about 50% of the conventional weight. It is expected to contribute to the improvement of fuel economy by reducing the weight of automobiles and to the improvement of global environmental issues including carbon dioxide.
  • the starting end 6a of the coil panel 6 has at least 50% or more and 100% or less of the length of one turn at the beginning of winding of the end so as to form a mounting surface for the coil. It is wound as if it were in the virtual plane S1. Preferably, it is 80% or more and 100% or less.
  • the end portion 6b of the coil panel 6 at least 50% or more and 100% or less of the length of one end of the winding at the end so as to form a coil mounting seat surface are assumed. It is wound as if it were in plane S2. Preferably, it is 80% or more and 100% or less.
  • the member to which the coil panel is mounted usually has a flat mounting surface on which the coil panel is to be mounted.
  • the virtual plane S K S 2 is a plane assumed as the mounting surface.
  • both ends of the coil panel were polished to be flat in order to form a flat seating surface of the coil panel. Therefore, in the present invention, polishing waste is not generated, which also contributes to a reduction in the amount of waste generated in the manufacturing process.
  • the wire was cold-rolled so as to have a flat cross-section dog.
  • the flat cross-sectional shape was as follows.
  • Major axis (d 1) 3.52 mm
  • minor axis (d 2) 2.55 mm
  • ratio of major axis to minor axis (d 1 / d 2) 1.38
  • width of flat surface ( d 3) 1.8 mm
  • ratio of flat surface width to major axis (d 3 / d 1) 0.5 1
  • a coil spring was manufactured using the wire having the flat cross-section dog.
  • the specifications of the coil spring were as follows.
  • a coil panel was manufactured using a wire (diameter-3.2 mm) having a circular cross section of SUS316N.
  • the specifications of the coil panel are as follows.
  • the measurement test was performed as follows.
  • the exhaust pipe of the car was connected as shown in Fig. 1. There were two locations around the exhaust pipe at 0 ° and 180 ° where the coil panel and bolt members were used.
  • the winding start position of the coil panel was located at 12 o'clock when viewed from the side where displacement stress acts.
  • the starting position of the coil panel was set at 3 o'clock.
  • the winding start position of the coil panel was located at 6 o'clock when viewed from the side where the displacement stress acts.
  • the winding start position of the coil panel was located at 9 o'clock when viewed from the side where displacement stress acts.
  • the graph is a graph showing the relationship between the displacement angle (deg) of the ball joint and the moment (N-m) acting on the bolt member.
  • the symbol ⁇ ⁇ indicates an example, and the value mark indicates a comparative example.
  • FIG. 4 (a) the direction in which the bending stress acts is direction 1.
  • FIG. 4 (b) the direction in which the bending stress acts is direction 2.
  • the direction in which the bending stress acts is direction 3.
  • the direction in which the bending stress acts is direction 4.
  • the present example shows lower moment than the comparative example at the same displacement angle in any direction. You. This indicates that the vibration isolation performance of the joint has been improved.
  • the coil panel of the present embodiment can have a lower contact height than the coil spring of the comparative example. Therefore, in the present embodiment, the free height of the coil panel can be set low, and the length of the bolt member can be shortened.
  • the coil spring of the present invention is most suitable as a coil panel that enables a further reduction in the weight of the connection structure of the exhaust pipe of an automobile and a reduction in cost.
  • connection structure of the exhaust pipe of the vehicle of the present invention is most suitable as a connection structure that enables further reduction in the weight of the blade and reduction in cost by using the coil spring of the present invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Exhaust Silencers (AREA)
  • Springs (AREA)
  • Joints Allowing Movement (AREA)

Abstract

L'invention concerne une structure de connexion de tuyau d'échappement d'un véhicule automobile et un ressort hélicoïdal à utiliser dans celle-ci. La structure de connexion de tuyau d'échappement comprend un premier tuyau d'échappement (1) présentant une première section de bride (1a), un second tuyau d'échappement (2) présentant une seconde section de bride (2a), une section de joint sphérique (B) permettant de connecter les premier et second tuyaux d'échappement (1, 2) de manière souple, ainsi que des mécanismes de couplage (C) placés au niveau d'une pluralité de positions des première et seconde sections de bride (1a, 2a). Un mécanisme de couplage (C) comprend un élément de boulon (8) pénétrant dans la première section de bride (1a) et étant fixé, au niveau d'une extrémité de celui-ci, sur la seconde section de bride (2a), ainsi qu'un ressort hélicoïdal (6) à section transversale déformée placé entre l'autre partie d'extrémité de l'élément de boulon (8) et la première section de bride (1a), la section transversale d'un fil étant réduite, au niveau du diamètre, dans le sens de compression (A) avec un rapport dimensionnel entre les diamètres court et long compris entre 1,1 et 2,6.
PCT/JP2002/001533 2000-08-31 2002-02-21 Structure de connexion de tuyau d'echappement d'un vehicule automobile et ressort helicoidal a utiliser dans celle-ci WO2003071108A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2000262255A JP2002071071A (ja) 2000-08-31 2000-08-31 自動車の排気管接続構造及び該構造に使用するコイルバネ
PCT/JP2002/001533 WO2003071108A1 (fr) 2000-08-31 2002-02-21 Structure de connexion de tuyau d'echappement d'un vehicule automobile et ressort helicoidal a utiliser dans celle-ci
US10/478,098 US7093861B2 (en) 2000-08-31 2002-02-21 Exhaust pipe joint structure and coil spring used in the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000262255A JP2002071071A (ja) 2000-08-31 2000-08-31 自動車の排気管接続構造及び該構造に使用するコイルバネ
PCT/JP2002/001533 WO2003071108A1 (fr) 2000-08-31 2002-02-21 Structure de connexion de tuyau d'echappement d'un vehicule automobile et ressort helicoidal a utiliser dans celle-ci

Publications (1)

Publication Number Publication Date
WO2003071108A1 true WO2003071108A1 (fr) 2003-08-28

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PCT/JP2002/001533 WO2003071108A1 (fr) 2000-08-31 2002-02-21 Structure de connexion de tuyau d'echappement d'un vehicule automobile et ressort helicoidal a utiliser dans celle-ci

Country Status (2)

Country Link
JP (1) JP2002071071A (fr)
WO (1) WO2003071108A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004081253A1 (fr) * 2003-03-12 2004-09-23 Toyo Seikan Kaisha Ltd. Procede et appareil permettant de traiter un recipient en plastique par plasma chimique
JP2011047008A (ja) * 2009-08-27 2011-03-10 Nippon Metal Ind Co Ltd ばね用オーステナイト系ステンレス鋼
JP2011107637A (ja) * 2009-11-20 2011-06-02 Fuji Xerox Co Ltd 開閉機構、現像剤搬送装置および画像形成装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499119A1 (fr) * 1991-02-14 1992-08-19 Peter J. Balsells Support isolateur
JPH061721U (ja) * 1992-06-12 1994-01-14 カルソニック株式会社 管継手装置
JPH0730319U (ja) * 1993-11-09 1995-06-06 オイレス工業株式会社 自動車用排気管継手
JPH1053842A (ja) * 1996-08-07 1998-02-24 Toyota Motor Corp 高温耐酸化性及び耐熱変形性に優れたステンレス鋼線及び繊維
JP2001304336A (ja) * 2000-04-24 2001-10-31 Sanden Shoji Kk 傾斜型オーバルコイルバネ利用の緩衝機構

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0499119A1 (fr) * 1991-02-14 1992-08-19 Peter J. Balsells Support isolateur
JPH061721U (ja) * 1992-06-12 1994-01-14 カルソニック株式会社 管継手装置
JPH0730319U (ja) * 1993-11-09 1995-06-06 オイレス工業株式会社 自動車用排気管継手
JPH1053842A (ja) * 1996-08-07 1998-02-24 Toyota Motor Corp 高温耐酸化性及び耐熱変形性に優れたステンレス鋼線及び繊維
JP2001304336A (ja) * 2000-04-24 2001-10-31 Sanden Shoji Kk 傾斜型オーバルコイルバネ利用の緩衝機構

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