CN108661761A - The catalyst supporting structure of exhaust pipe - Google Patents
The catalyst supporting structure of exhaust pipe Download PDFInfo
- Publication number
- CN108661761A CN108661761A CN201810220552.1A CN201810220552A CN108661761A CN 108661761 A CN108661761 A CN 108661761A CN 201810220552 A CN201810220552 A CN 201810220552A CN 108661761 A CN108661761 A CN 108661761A
- Authority
- CN
- China
- Prior art keywords
- exhaust pipe
- catalyst
- outer barrel
- diameter portion
- segmentation
- 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
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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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
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- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present invention provides a kind of catalyst supporting structure of exhaust pipe, and easiness to ensure the assembly and disassembly of catalyst while is directed to the effective supporting structure of body oscillating, simple in structure in addition and realize miniaturization.It is split in the midway of connection cylinder head and the exhaust pipe (54) of silencer, the outer barrel (92) for being constituted and purifying the catalyst (57) of exhaust gas by catalyst is configured in a manner of across the end face of exhaust pipe (54) (81c, 82c).Also, the front wide diameter portion (81b) of the one end of fixed outer cylinder (92) is arranged in the side (front exhaust pipe (81)) in the front exhaust pipe (81) and rear part exhaust pipe (82) before and after end face (81c, 82c).In addition, so that another party's (rear part exhaust pipe 82) in front exhaust pipe (81) and rear part exhaust pipe (82) is kept the other end of outer barrel (92), outer barrel (92) is detachably installed in a manner of across one side of exhaust pipe (54), that is, front exhaust pipe (81) and another party, that is, rear part exhaust pipe (82).
Description
Technical field
The present invention relates to a kind of catalyst supporting structures of exhaust pipe.
Background technology
In the past, it is known that ensure the structure of the easiness of the dismounting of catalyst (for example, referring to patent in exhaust pipe
Document 1).
Existing technical literature
Patent document 1：Japanese Unexamined Patent Publication 2005-233053 bulletins
In patent document 1, the catalyst of tubular is by cantilever support, since metal honeycomb catalyst is very heavy,
Relative to body oscillating, there are problems in supporting structure.In addition, the part of catalyst is kept to exist comprising catalyst
It is interior and become triplen, it is complicated and assembling, dismounting be not easy, caused by leading to enlargement configuration space expand.
Invention content
The purpose of the present invention is to provide a kind of catalyst supporting structures of exhaust pipe, to ensure catalyst
Body oscillating effective supporting structure is directed to while the easiness of assembly and disassembly, in addition, simple in structure and realize small-sized
Change.
The present invention is a kind of catalyst supporting structure of exhaust pipe, which is characterized in that in connection cylinder head 47 and is disappeared
The midway of the exhaust pipe 54,100,110 of sound device 56 is split, with across the cutting part 81c of the exhaust pipe 54,100,110,
The mode of 82c, 101c, 102c, 111c, 112c configure outer barrel 92,108,118, which is constituted using urging
Agent purifies the catalyst 57,106,116 of exhaust gas, and the cutting part 81c, 82c, 101c, 102c, 111c,
The fixed outer barrel is arranged in a side 81,101,111 in the front and back segmentation exhaust pipe 81,82,101,102,111,112 of 112c
92, fixed part 81b, 101b, 111b of 108,118 one end makes the segmentation exhaust pipe 81,82,101,102,111,112
In another party 82,102,112 keep the other end of the outer barrel 92,108,118, to across segmentation exhaust pipe 81,82,
101, the mode of the side 81,101,111 in 102,111,112 and another party 82,102,112 are detachably installed described outer
Cylinder 92,108,118.
The present invention is a kind of catalyst supporting structure of exhaust pipe, which is characterized in that in connection cylinder head 47 and is disappeared
The midway of the exhaust pipe 54,100,120,130 of sound device 56 is split, by the segmentation exhaust pipe 81 being partitioned into, 82,101,102,
121, the side 81,101,121,131 in 122,131,132 and another party 82,102,122,132 respective ends separation are matched
Set, and by outer barrel 92,108,128,138 across configuration the segmentation exhaust pipe 81,82,101,102,121,122,131,
On a side 81,101,121,131 and another party 82,102,122,132 respective ends in 132, the outer barrel 92,108,
128,138 constitute and purify the catalyst 57,106,126,136 of exhaust gas using catalyst, to by the outer barrel 92,
108,128,138 it is supported on the segmentation exhaust pipe 81,82,101,102,121,122,131,132 by loading and unloading freely
In a side 81,101,121,131 and another party 82,102,122,132 respective ends.
On the basis of foregoing invention, Ke Yishi, the exhaust pipe 54 and the vehicle body frame for being supported on saddle-ride type vehicle 10
The cylinder head 47 of engine 36 on 11 connects, the vehicle body frame 11 have from constitute the preceding standpipe 21 of its front end to
The lower vehicle frame 27 that downside extends, the exhaust pipe 54,100,110,120,130 is on the edge being configured at around the lower vehicle frame 27
The part that upper and lower directions extends is divided, the upper end of the outer barrel 92,108,118,128,138 and the segmentation exhaust pipe
81, the lower end connection of the side 81,101,111,121,131 in 82,101,102,111,112,121,122,131,132.
In addition, on the basis of foregoing invention, Ke Yishi, the outer barrel 92,128 is fixed in by fixed component 86
In the segmentation exhaust pipe 81,82,121,122.
In addition, on the basis of foregoing invention, Ke Yishi is formed on the outer barrel 108 of the catalyst 106
A side in external screw thread 108e and internal thread, a side in external screw thread 108e and internal thread with the segmentation exhaust pipe 101,
Another party in the external screw thread and internal thread 101e that are formed on a side 101 in 102 is screwed.
In addition, on the basis of foregoing invention, Ke Yishi, one on a side 111 in the segmentation exhaust pipe 111,112
The inner peripheral portion 111d and peripheral part 111f of end are respectively provided with threaded portion 111e, 111g, the catalyst 116 it is described outer
The one end and the threaded portion 111e of the one end of cylinder 118 and another party 112 in the segmentation exhaust pipe 111,112,
111g is screwed.
In addition, on the basis of foregoing invention, Ke Yishi, the one end of the outer barrel 108 of the catalyst 106
Peripheral part 108d and the inner peripheral portion 108m of the other end be respectively provided with threaded portion 108e, 108p, the segmentation exhaust pipe 101,
102 respective ends are screwed with described threaded portion 108e, 108p.
In addition, on the basis of foregoing invention, Ke Yishi, the outer barrel 108 has integrally to be extended from one end
Inside canister portion 108f and outer side tube part 108g, the outer side tube part 108g are configured in outside the radius of the inside canister portion 108f
Side, described threaded portion 108e, 108p are formed in the end of the one end and the outer side tube part 108g of the outer barrel 108.
Invention effect
It about the present invention, is split in the midway of connection cylinder head and the exhaust pipe of silencer, with across point of exhaust pipe
It cuts the mode in portion and constitutes the outer barrel for purifying the catalyst of exhaust gas using catalyst to configure, and before and after cutting part
Divide the fixed part that the one end of fixed outer cylinder is arranged in the side in exhaust pipe, another party in segmentation exhaust pipe is made to keep outer barrel
The other end therefore, be configured to detachably installing outer barrel in a manner of across the side and another party in exhaust pipe
Support the both ends of outer barrel and configure outer barrel in a manner of two sides across segmentation exhaust pipe, thus, it is possible to ensure assembling and
While dismantling easiness, for body oscillating effectively supporting catalytic converter, additionally it is possible to realize the letter of supporting structure
Change and minimizes.
About the present invention, it is split in the midway of connection cylinder head and the exhaust pipe of silencer, the segmentation that will be partitioned into
The respective end configured separate of a side and another party in exhaust pipe, and the catalysis that exhaust gas is purified using catalyst will be constituted
A side and another party respective end of the outer barrel of converter across configuration in dividing exhaust pipe, thus by outer barrel to load and unload certainly
Mode such as is supported on a side and the respective end of another party in segmentation exhaust pipe and is therefore connected point as using outer barrel
The structure of exhaust pipe is cut, can be while ensuring to assemble easiness, for body oscillating effectively supporting catalytic converter, this
Outside, additionally it is possible to realize the simplification of supporting structure and miniaturization.
On the basis of foregoing invention, the cylinder head of exhaust pipe and the engine for the vehicle body frame for being supported on saddle-ride type vehicle
Connection, vehicle body frame have from the lower vehicle frame that extends to downside of preceding standpipe for constituting its front end, and exhaust pipe is got off being configured at
The part of frame peripheral vertically extended is divided, and the upper end and the lower end of the side in segmentation exhaust pipe of outer barrel connect
Knot, therefore, even if in the state that the segmentation exhaust pipe of one side is installed on cylinder head when replacing catalyst, due to a side
Segmentation exhaust pipe it is opening down, therefore can prevent foreign matter from being entered in engine by the segmentation exhaust pipe of a side,
Further, since can from below lift outer barrel and be easily assembled to the front exhaust pipe of a side, therefore dimension can be promoted
Shield property.
In addition, on the basis of foregoing invention, outer barrel is fixed on segmentation exhaust pipe by fixed component, therefore, it is possible to
Promote maintainability.
In addition, on the basis of foregoing invention, the outer barrel of catalyst is formed with the side in external screw thread and internal thread,
A side in the external screw thread and internal thread and another party in the external screw thread and internal thread that are formed on a side of segmentation exhaust pipe
It is screwed, therefore, it is possible to promote maintainability.
In addition, on the basis of foregoing invention, divide the inner peripheral portion and peripheral part of the one end on the side in exhaust pipe
It is respectively provided with threaded portion, the one end of the outer barrel of catalyst and the one end and screw thread of another party in segmentation exhaust pipe
Portion is screwed, and therefore, it is possible to simplify the segmenting structure of exhaust pipe and the supporting structure of catalyst, can be reduced into
This.
In addition, on the basis of foregoing invention, the peripheral part of the one end of the outer barrel of catalyst and the other end
Inner peripheral portion is respectively provided with threaded portion, and each end for dividing exhaust pipe is combined with threaded portion, therefore, it is possible to by one end of outer barrel
Portion side is set as different diameters from the other end side, can promote the rigidity of outer barrel.
In addition, on the basis of foregoing invention, outer barrel has the inside canister portion integrally extended from one end and outer side neck
Portion, is configured with outer side tube part on the outside of the radius of interior side tube part, and threaded portion is formed in the one end of outer barrel and outer side tube part
End can promote the rigidity of outer barrel therefore, it is possible to keep the end of inside canister portion by dividing another party of exhaust pipe
Meanwhile, it is capable to the both ends of supporting catalytic converter.
Description of the drawings
Fig. 1 is automatic the two of the catalyst supporting structure of the exhaust pipe with first embodiment of the present invention
Take turns the right side view of vehicle.
Fig. 2 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe for indicating first embodiment.
Fig. 3 is the sectional view of the III-III lines along Fig. 2.
Fig. 4 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe for indicating second embodiment.
Fig. 5 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe for indicating third embodiment.
Fig. 6 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe for indicating the 4th embodiment.
Fig. 7 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe for indicating the 5th embodiment.
Label declaration
10：Automotive bicycle (saddle-ride type vehicle)
11：Vehicle body frame
21：Preceding standpipe
27：Lower vehicle frame
36：Engine
47：Cylinder head
54、100、110、120、130：Exhaust pipe
56：Silencer
57、106、116、126、136：Catalyst
81、101、111、121、131：Front exhaust pipe (side in segmentation exhaust pipe)
81b、101b、111b：Front wide diameter portion (fixed part)
81c、82c、101c、102c、111c、112c：End face (cutting part)
82、102、112、122、132：Rear part exhaust pipe (another party in segmentation exhaust pipe)
86：Tape member (fixed component)
92、108、118、128、138：Outer barrel
101e、108p、111e：Internal thread (threaded portion)
102g、108e、111g：External screw thread (threaded portion)
108d：Peripheral surface (peripheral part of a side)
108f：Inside canister portion
108g：Outer side tube part
108m：Inner peripheral surface (inner peripheral portion of another party)
111d：Inner peripheral surface (inner peripheral portion)
111f：Peripheral surface (peripheral part)
Specific implementation mode
Hereinafter, with reference to attached drawing, various embodiments of the present invention will be described.
<First embodiment>
Fig. 1 is automatic the two of the catalyst supporting structure of the exhaust pipe with first embodiment of the present invention
Take turns the right side view of vehicle 10.
Automotive bicycle 10 has：Front-wheel 13 is supported on the front end of vehicle body frame 11 by means of front fork 12；Trailing wheel
16, the lower part of vehicle body frame 11 is supported on by means of swing arm 14；And seat 17, it is installed on the upper of vehicle body frame 11
Portion.
Automotive bicycle 10 is that occupant rides in the saddle-ride type vehicle of seat 17.
Vehicle body frame 11 has：The seat of preceding standpipe 21, main car frame 22, the center bed 23 of pair of right and left, pair of right and left
Frame 24, the subframe 26 of pair of right and left and lower vehicle frame 27.
Preceding standpipe 21 constitutes the front end of vehicle body frame 11.From preceding standpipe 21, obliquely downward extends main car frame 22 backward.Left and right
Center bed 23 extend downwards from the rear end of main car frame 22.Left and right seat frame 24 from rear end of main car frame 22 or so to
Rear extends and supports seat 17.The subframe 26 of left and right is set up in the seat frame 24 of the center bed 23 and left and right of left and right.
The position connection of the end of lower vehicle frame 27 and the end of the ratio main car frame 22 of preceding standpipe 21 on the lower, from preceding standpipe 21 in main car frame
Obliquely downward extends backward for 22 lower section.
Front fork 12 is equipped with control crank 31 on top, in lower part by means of 32 support front wheel 13 of axle.Swing arm 14 can
It is supported on pivot 34 with swinging up and down, which is set up in the lower part of left and right center bed 23.Pivot 34 prolongs in the direction of vehicle width
It stretches.In the rear end of swing arm 14 by means of 35 supporting wheels 16 of axle.
It is supported with engine 36 in the lower part of center bed 23 of left and right and the lower end of lower vehicle frame 27.Engine 36 is located at
The lower section of main car frame 22.
The cylinder part 42 that engine 36 has crankcase 41, erected from the front upper portion of crankcase 41.
Crankcase 41 is installed in the center bed 23 and lower vehicle frame 27 of left and right.The rear portion of crankcase 41 is provided with speed change
Device 44.Cylinder part 42 has：Cylinder block 46 protrudes upward from crankcase 41；Cylinder head 47 is installed on cylinder block 46
Top；And valve mechanism cover 48, cover the top of cylinder head 47.
The rear surface of cylinder head 47 is connected with inlet duct 51, and exhaust apparatus 52 is connected in front surface.
Exhaust apparatus 52 has：Exhaust pipe 54 extends from cylinder head 47 and is bent and rearward extends forwards；It urges
Agent incorporating section 55 is set to the midway of exhaust pipe 54；Silencer 56 is connect with the rear end of exhaust pipe 54；And it urges
Change converter 57, is configured in catalyst incorporating section 55.Heat shield 58 is installed on silencer 56.57 profit of catalyst
The exhaust gas flowed in exhaust pipe 54 is purified with catalyst.
Fuel tank 61 in the configuration of the front of seat 17 is installed on main car frame 22 and seat frame 24.
A part for vehicle body frame 11 is covered by body cover 62.Side of the body cover 62 with body front wall 63, pair of right and left
The rear side cover 65 of cover 64 and pair of right and left.
Body front wall 63 cover front fork 12 27 respective two side of front and two sides, main car frame 22 and lower vehicle frame, with
And two sides of fuel tank 61.
The side cover 64 of left and right covers main car frame 22,24 respective two side of center bed 23 and seat frame.Rear side cover
Two sides of 65 covering seat frames 24 and subframe 26.
The lower part pedal support 66 of pair of right and left is installed in the lower part of center bed 23, the lower part pedal support in left and right
Footrest for driver 67 is provided on 66.In addition, the subframe 26 in left and right is separately installed with rear portion pedal support 68, after each
Co-driver pedal 69 is installed on portion's pedal support 68.
The rear buffer cell 71 of pair of right and left is set up in the subframe 26 of swing arm 14 and left and right.
Front-wheel 13 is covered from top by front mudguard 75.Trailing wheel 16 is covered from top by rear mudguard 77.
Fig. 2 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe 54 for indicating first embodiment.In addition, such as
Shown in Fig. 1, the part (catalyst incorporating section 55) for being provided with catalyst 57 of exhaust pipe 54 is (detailed around lower vehicle frame 27
For thin, for the right side side of lower vehicle frame 27) the front is high and the back is low, and ground extends, and in fig. 2, flatly depict the setting of exhaust pipe 54
There is the longitudinal section (same in the other drawings) of the part of catalyst 57.
In addition, indicating the direction of the flowing of the exhaust gas in exhaust pipe 54 (from upstream under by blank arrowhead A in figure
The direction of trip) (same in the other drawings).
Exhaust pipe 54 is by being divided into two-part front exhaust pipe 81 and rear part exhaust pipe 82 to constitute.
Front exhaust pipe 81 has：The front pipe portion 81a extended from cylinder head 47 (referring to Fig.1) side；And it is integrally formed
Front wide diameter portion 81b in the rear end of front pipe portion 81a.Front wide diameter portion 81b be carried out than front pipe portion 81a it is expanding
Part.
Rear part exhaust pipe 82 has：The rear portion pipe portion 82a extended from silencer 56 (referring to Fig.1) side；And it is integrally formed
Rear portion wide diameter portion 82b in the front end of rear portion pipe portion 82a.Rear portion wide diameter portion 82b be carried out than rear portion pipe portion 82a it is expanding
Part.
Above-mentioned front wide diameter portion 81b and rear portion wide diameter portion 82b constitutes catalyst incorporating section 55, matches in catalyst incorporating section 55
It is equipped with catalyst 57.
Catalyst 57 is fixed on catalyst incorporating section 55 by catalyst fixing piece 84.
Catalyst fixing piece 84 is with a pair of circular washer 85,85, a pair of of tape member 86,86 and a pair of of fastening part
Part 87.
It is carried out between 85,85 couples of front wide diameter portion 81b of a pair of of washer and rear portion wide diameter portion 82b and catalyst 57 close
Envelope.A pair of of tape member 86,86 fastens front wide diameter portion 81b and rear portion wide diameter portion 82b from outside.Secure component 87 makes tape member 86
Generate fastening force.
Catalyst 57 is by maintaining the columned keeping body 91 of catalyst and being kept the outer barrel 92 that body 91 is inserted into
It constitutes, makes to contact to be purified with catalyst by the exhaust gas in keeping body 91.
Catalyst 57 is across the rear portion for front the wide diameter portion 81b and rear part exhaust pipe 82 for being configured at front exhaust pipe 81
Wide diameter portion 82b.
Front wide diameter portion 81b has：Front tapering 81d, with from the front sides pipe portion 81a towards front exhaust pipe 81
The end face sides 81c and gradually it is expanding；And the front large-diameter portion 81e of tubular, extend from the rear end of front tapering 81d.
Rear portion wide diameter portion 82b has：Rear portion tapering 82d, with from the rear portion sides pipe portion 82a towards rear part exhaust pipe 82
The end face sides 82c and gradually it is expanding；The rear portion large-diameter portion 82e of tubular extends from the front end of rear portion tapering 82d；And later
The rear portion small diameter portion 82f being described in detail.
Outer barrel 92 has front end small diameter portion 92b, large-diameter portion 92c successively on its peripheral surface 92a from the upstream side of exhaust
And rear portion small diameter portion 92d.Front end small diameter portion 92b and rear portion small diameter portion 92d is same outer diameter, front end small diameter portion 92b and rear portion
The outer diameter of small diameter portion 92d is smaller than the outer diameter of large-diameter portion 92c.
About the front end small diameter portion 92b of outer barrel 92, washer 85 is sleeved on the peripheral surface of front end small diameter portion 92b, and the front end is small
Diameter portion 92b is inserted in the front large-diameter portion 81e of front exhaust pipe 81, and passes through band portion on the outside of the large-diameter portion 81e of front
Part 86 and be fastened and fixed.
The large-diameter portion 92c of outer barrel 92 is the portion of the end face 81c of across front exhaust pipe 81 and the end face 82c of rear part exhaust pipe 82
Point.
About the rear portion small diameter portion 92d of outer barrel 92, washer 85 is sleeved on the peripheral surface of rear portion small diameter portion 92d, the rear portion
Small diameter portion 92d is inserted into the rear portion large-diameter portion 82e of rear part exhaust pipe 82, and passes through band on the outside of the large-diameter portion 82e of rear portion
Component 86 and be fastened and fixed.
The rear portion small diameter portion 92d of outer barrel 92 is embedded in the rear portion small diameter portion of rear part exhaust pipe 82 with the state of clearance fit
In 82f.Rear portion small diameter portion 82f is disposed on the front of rear portion pipe portion 82a and has carried out expanding part than rear portion pipe portion 82a.
In the state that catalyst 57 is fixed on front exhaust pipe 81 with rear part exhaust pipe 82, in front exhaust pipe 81
End face 81c and the end face 82c of rear part exhaust pipe 82 between be provided with the gap 93 of distance L1.Pass through gap as setting
93, it is fixed on the front exhaust pipe 81 of the cylinder head 47 (referring to Fig.1) of engine 36 (referring to Fig.1) and is fixed on vehicle body frame
(referring to Fig.1) thermal expansion when engine operating of silencer 56 is absorbed.
Fig. 3 is the sectional view of the III-III lines along Fig. 2.
A pair of curved portion 86b, 86b of bending two ends of the tape member 86 by annulus 86a and from annulus 86a are constituted, should
Annulus 86a can with along the front large-diameter portion 81e of front exhaust pipe 81 (alternatively, after rear part exhaust pipe 82 shown in Fig. 2
Portion large-diameter portion 82e) the mode of peripheral surface deform.
Offered on the 86b of bending section for bolt 94 by bolt insert hole 86c.
Secure component 87 consists of the following parts：Along a pair of of gasket 95 of bending section 86b, 86b configuration of tape member 86,
95；The bolt 94 of hole 86c, 86c and gasket 95,95 is inserted across bolt；And tighten the terminal part for being attached to bolt 94
Nut 96.
In the shape that the annulus 86a of tape member 86 is simply wound in front large-diameter portion 81e or rear portion large-diameter portion 82e
Under state, there is gap between a pair of curved portion 86b, 86b.Under the state, by fastening bolt 94, reduce bending section 86b,
The rear portion large-diameter portion 82e in the gap between 86b, front large-diameter portion 81e or rear part exhaust pipe 82 to front exhaust pipe 81 gives
Fastening force is given, catalyst 57 is fixed on front exhaust pipe 81 or rear part exhaust pipe 82.
In fig. 1 and 2, front is arranged in advance as the method that catalyst 57 is assembled in exhaust pipe 54
Tracheae 81 is installed on the cylinder head 47 of engine 36, also, catalyst 57 is fixed on to the rear portion being connect with silencer 56
Exhaust pipe 82.
In order to which catalyst 57 is fixed on rear part exhaust pipe 82, at the rear portion that washer 85 is sleeved on to catalyst 57
In the state of on small diameter portion 92d, after catalyst 57 is inserted into rear part exhaust pipe 82 from the downstream sides 92e of outer barrel 92
In portion wide diameter portion 82b.Specifically, the rear portion small diameter portion 92d of outer barrel 92 is inserted into the rear portion small diameter portion of rear part exhaust pipe 82
In 82f, and it is inserted into the downstream 85a of washer 85 and is abutted with the rear portion tapering 82d of rear part exhaust pipe 82.At this point, washer 85
Upstream end 85b is abutted with the downstream 92f of the large-diameter portion 92c of outer barrel 92, and catalyst 57 is relative to 82 quilt of rear part exhaust pipe
Positioning.Under the state, the tape member by secure component 87 come adapter sleeve on the rear portion large-diameter portion 82e of rear part exhaust pipe 82
86.In this way, the fixed of 57 opposite rear exhaust pipe 82 of catalyst is completed.The rear portion small diameter portion 92d of outer barrel 92 passes through rear portion
The rear portion small diameter portion 82f of exhaust pipe 82 and being maintained as can be slided on the length direction of rear portion small diameter portion 92d (can heat it is swollen
It is swollen).Catalyst 57 passes through the front large-diameter portion 81e of front exhaust pipe 81, the rear portion large-diameter portion of rear part exhaust pipe 82 as a result,
82e and rear portion these three positions small diameter portion 82f and supported.That is, catalyst 57 at least front end and rear end by into
Row double base.
Next, the front end sides small diameter portion 92b for the catalyst 57 for being fixed on rear part exhaust pipe 82 are assembled into front
In exhaust pipe 81.
Specifically in the state of, on the front end small diameter portion 92b that washer 85 is sleeved on to catalyst 57, catalysis is turned
Parallel operation 57 is inserted into from the upstream end sides 92g of outer barrel 92 in the front large-diameter portion 81e of front exhaust pipe 81.
At this point, the upstream end 85b of washer 85 is connected to front tapering 81d, and the downstream 85a of washer 85 is abutted
In the large-diameter portion 92c of outer barrel 92.In this way, catalyst 57 is positioned relative to front exhaust pipe 81.
Under the state, the position in the front-back direction of silencer 56, rear part exhaust pipe 82 and catalyst 57 is adjusted, it will
Silencer 56 is fixed on vehicle body frame 11 (referring to Fig.1) (referring to Fig.1).Also, by secure component 87 come adapter sleeve in front
Tape member 86 on the front large-diameter portion 81e of exhaust pipe 81.In this way, the fixation of 57 opposite nose exhaust pipe 81 of catalyst is complete
At.
In addition, the method that catalyst 57 is assembled in exhaust pipe 54 is not limited to the above method.
As shown in above Fig. 1 and Fig. 2, divided in the midway of connection cylinder head 47 and the exhaust pipe 54 of silencer 56
Cut, by constitute by catalyst come purify exhaust gas catalyst 57 outer barrel 92 across the end for the cutting part for being used as exhaust pipe 54
Configure to face 81c, 82c.Also, being arranged as the front exhaust pipe 81 of segmentation exhaust pipe and rear portion before and after end face 81c, 82c
The front wide diameter portion 81b of fixed part, the fixed part fixed outer cylinder are provided as on a side (front exhaust pipe 81) in tracheae 82
92 one end.In addition, being kept on another party's (rear part exhaust pipe 82) in front exhaust pipe 81 and rear part exhaust pipe 82 outer
The other end of cylinder 92, fills in a manner of across one side of exhaust pipe 54, that is, front exhaust pipe 81 and another party, that is, rear part exhaust pipe 82
Unload installation outer barrel 92 freely.
According to the structure, by support the both ends of outer barrel 92 and by outer barrel 92 across configuration in 81 He of front exhaust pipe
82 both sides of rear part exhaust pipe, can be while ensuring assembly and disassembly easiness relative to body oscillating effectively supporting catalytic
Converter 57, furthermore it is possible to realize the simplification of supporting structure and miniaturization.
In addition, being split in the midway of connection cylinder head 47 and the exhaust pipe 54 of silencer 56, make the front being partitioned into
A side (front exhaust pipe 81) in exhaust pipe 81 and rear part exhaust pipe 82 and another party (rear part exhaust pipe 82) respective end
It detaches and is configured.Also, by outer barrel 92 across a side (front of the configuration in front exhaust pipe 81 and rear part exhaust pipe 82
Exhaust pipe 81) and another party (rear part exhaust pipe 82) respective end on, which constitutes and using catalyst purifies exhaust gas
Catalyst 57.Also, outer barrel 92 is supported on by loading and unloading freely in front exhaust pipe 81 and rear part exhaust pipe 82
A side (front exhaust pipe 81) and another party (rear part exhaust pipe 82) respective end.
It can as the structure for connecting front exhaust pipe 81 and rear part exhaust pipe 82 using outer barrel 92 according to the structure
While ensuring to assemble easiness, it can be directed to body oscillating effectively supporting catalytic converter 57, be furthermore possible to realize bearing
The simplification and miniaturization of structure.
In addition, exhaust pipe 54 starts with what is supported on the vehicle body frame 11 as the automotive bicycle 10 of saddle-ride type vehicle
The cylinder head 47 of machine 36 connects, and vehicle body frame 11 has a lower vehicle frame 27, lower vehicle frame 27 from constitute the preceding standpipe 21 of its front end to
Downside extends.Exhaust pipe 54 the part vertically extended being configured at around lower vehicle frame 27 be divided, outer barrel 92 it is upper
End and the lower end of the side (front exhaust pipe 81) in front exhaust pipe 81 and rear part exhaust pipe 82 link.
According to the structure, even if the front exhaust pipe 81 of a side is being installed on cylinder head when replacing catalyst 57
In the state of 47, due to a side front exhaust pipe 81 it is opening down, can prevent foreign matter from being arranged by the front of a side
Tracheae 81 and enter in engine 36.Further, since outer barrel 92 can be lifted from below and be easily assembled to a side's
Front exhaust pipe 81, therefore maintainability can be promoted.
In addition, as shown in Figures 2 and 3, outer barrel 92 is fixed on front exhaust by tape member 86 as fixed component
Pipe 81 and rear part exhaust pipe 82, therefore, fixation become easy, and can promote the dimension of the inspection to catalyst 57, replacement etc.
Shield property.
<Second embodiment>
Fig. 4 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe 100 for indicating second embodiment.Second
In embodiment, identical label, detailed description will be omitted are marked to structure identical with first embodiment.
Exhaust pipe 100 is by being divided into two-part front exhaust pipe 101 and rear part exhaust pipe 102 to constitute.
Front exhaust pipe 101 has：The front pipe portion 101a extended from cylinder head 47 (referring to Fig.1) side；With it is integrally formed
Front wide diameter portion 101b in the rear end of front pipe portion 101a.Front wide diameter portion 101b is expanded than front pipe portion 101a
The part of diameter.
Rear part exhaust pipe 102 has：The rear portion pipe portion 102a extended from silencer 56 (referring to Fig.1) side；With it is integrally formed
Rear portion wide diameter portion 102b in the front end of rear portion pipe portion 102a.Rear portion wide diameter portion 102b is expanded than rear portion pipe portion 102a
The part of diameter.
Above-mentioned front wide diameter portion 101b and rear portion wide diameter portion 102b constitutes catalyst supports portion 104, catalyst 106
It holds in catalyst supports portion 104.
The front wide diameter portion 101b of front exhaust pipe 101 is formed with internal thread 101e in inner circumferential surface 101d.In addition, rear portion
The rear portion wide diameter portion 102b of exhaust pipe 102 is formed with external screw thread 102g in its peripheral surface 102f.
Catalyst 106 by holding catalyst columned keeping body 91 and be kept the outer barrel 108 that body 91 is inserted into
It constitutes.
The catalyst 106 and front wide diameter portion 101b of front exhaust pipe 101 and the rear portion of rear part exhaust pipe 102 are expanding
Portion 102b is screwed.
The outer barrel 108 of catalyst 106 is by being set to the base portion 108b of the upstream end sides 108a and from base portion 108b branches
And the dual canister portion 108c downstream extended is constituted.
Base portion 108b is formed with external screw thread 108e in its peripheral surface 108d.External screw thread 108e is interior with front exhaust pipe 101
Screw thread 101e is screwed.
Dual canister portion 108c is by being fitted into the inside canister portion 108f for having keeping body 91 and being configured to from radial direction outer side covering
The outer side tube part 108g of a part of inside canister portion 108f is constituted.It is provided between interior side tube part 108f and outer side tube part 108g
Cricoid space 109.
Inside canister portion 108f downstream extends than outer side tube part 108g.
The internal diameter of inside canister portion 108f is identical as the internal diameter of base portion 108b.The end of the downstream sides 108h of inside canister portion 108f
Portion is embedded in the state of clearance fit in the rear portion pipe portion 102a of rear part exhaust pipe 102.After inside canister portion 108f passes through as a result,
Portion pipe portion 102a and be maintained as that (can thermally expand) can be slided on the length direction of interior side tube part 108f.
Outer side tube part 108g is from from the rear end of base portion 108b to the flange part 108j extended on the outside of radial direction and from flange
The canister portion 108k that the outer peripheral edge of portion 108j rearward extends is constituted.
Flange part 108j is the part that the end face 101c of front exhaust pipe 101 is abutted.Canister portion 108k is in inner circumferential surface
108m is formed with internal thread 108p, and internal thread 108p extends from downstream 108n to the sides flange part 108j.Internal thread 108p with
The external screw thread 102g of rear part exhaust pipe 102 is screwed.The end face of the upstream end 108q and rear part exhaust pipe 102 of internal thread 108p
102c is detached with distance L2.As a result, by the thread binding part of internal thread 108p and external screw thread 102g, by rear part exhaust pipe
102 and silencer 56 when being assembled into front exhaust pipe 101 and catalyst 106 (referring to Fig.1), exhaust pipe can be adjusted
100 overall length.
More than, after catalyst 106 is by the front wide diameter portion 101b of front exhaust pipe 101, rear part exhaust pipe 102
Portion wide diameter portion 102b and rear portion these three positions pipe portion 102a and supported.That is, catalyst 106 at least in front end and
Rear end is by carry out double base.
In addition, by the way that catalyst can be made by the heat-blocking action in space 109 in 108 installation space 109 of outer barrel
Heat caused by 106 keeping body 91 is difficult to transmit to outside.
As described above, the outer barrel 108 of catalyst 106 is formed with external screw thread 108e in peripheral part, external screw thread 108e
With the internal thread 101e screw threads for the side (front exhaust pipe 101) being formed in front exhaust pipe 101 and rear part exhaust pipe 102
In conjunction with therefore, it is possible to promote the maintainability for being checked catalyst 106, being replaced etc..
In addition, the outer barrel 108 of catalyst 106 the peripheral part as one end peripheral surface 108d with as another
The external screw thread 108e as threaded portion and the interior spiral shell as threaded portion are respectively provided on the inner peripheral surface 108m of the inner peripheral portion of one end
Line 108p.Front exhaust pipe 101 and 102 respective end of rear part exhaust pipe respectively with external screw thread 108e and internal thread 108p
It is screwed.
With this configuration, the one end side and the other end side that can make outer barrel 108 are different diameters, can be improved outer
The rigidity of cylinder 108.
In addition, outer barrel 108 has the inside canister portion 108f integrally extended from one end and outer side tube part 108g, outer side neck
Portion 108g is configured on the outside of the radius of inside canister portion 108f, and external screw thread 108e and internal thread 108p are respectively formed in outer barrel 108
The end of one end and outer side tube part 108g.
According to the structure, another party's (rear part exhaust pipe in front exhaust pipe 101 and rear part exhaust pipe 102 can be passed through
102) end of inside canister portion 108f is kept, it can while promoting the rigidity of outer barrel 108, supporting catalytic converter 106
Both ends.
<Third embodiment>
Fig. 5 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe 110 for indicating third embodiment.In third
In embodiment, identical label, detailed description will be omitted are marked to structure identical with first embodiment.
Exhaust pipe 110 is by being divided into two-part front exhaust pipe 111 and rear part exhaust pipe 112 to constitute.
Front exhaust pipe 111 has the front pipe portion 111a extended from cylinder head 47 (referring to Fig.1) side and is integrally formed at
The front wide diameter portion 111b of the rear end of front pipe portion 111a.Front wide diameter portion 111b be carried out than front pipe portion 111a it is expanding
Part.
Rear part exhaust pipe 112 has the rear portion pipe portion 112a extended from silencer 56 (referring to Fig.1) side and is integrally formed at
The rear portion wide diameter portion 112b of the front end of rear portion pipe portion 112a.Rear portion wide diameter portion 112b be carried out than rear portion pipe portion 112a it is expanding
Part.
Above-mentioned front wide diameter portion 111b and rear part exhaust pipe 112 comprising rear portion wide diameter portion 112b constitute catalyst incorporating section
114, catalyst 116 is configured in catalyst incorporating section 114.
Catalyst 116 by holding catalyst columned keeping body 91 and be kept the outer barrel 118 that body 91 is inserted into
It constitutes.
Catalyst 116 across configuration front exhaust pipe 111 front wide diameter portion 111b and rear part exhaust pipe 112
Rear portion wide diameter portion 112b.
Front wide diameter portion 111b is formed with internal thread 111e in inner circumferential surface 111d, and external screw thread is formed in peripheral surface 111f
111g, internal thread 111e from end face 111c anteriorly the sides pipe portion 111a extend, external screw thread 111g from end face 111c anteriorly
The sides pipe portion 111a extend.
Rear portion wide diameter portion 112b is formed with internal thread 112e in inner circumferential surface 112d, internal thread 112e from end face 112c to
The rear portion sides pipe portion 112a extend.Internal thread 112e and the external screw thread 111g of front exhaust pipe 111 are screwed.
The outer barrel 118 of catalyst 116 is formed with external screw thread 118e in its peripheral surface 118a, and external screw thread 118e is from upper
The end downstream ends the 118c sides 118d are swum to extend.External screw thread 118e and the internal thread 111e of front exhaust pipe 111 are screwed.
The end of the downstream sides 118d of outer barrel 118 is with the rear portion pipe portion of the state of clearance fit and rear part exhaust pipe 112
112a is chimeric.Be maintained as by rear portion pipe portion 112a can be in outer barrel for the end of the downstream sides 118d of outer barrel 118 as a result,
(can thermally expand) is slided on 118 length direction.Catalyst 116 is arranged in its front end and rear end, that is, front as a result,
The front wide diameter portion 111b of tracheae 111 and rear portion the two positions pipe portion 112a of rear part exhaust pipe 112 are by carry out double base.
Cricoid space 119 is provided between rear part exhaust pipe 112 and catalyst 116.Pass through the space 119
Heat-blocking action can make heat caused by the keeping body 91 of catalyst 116 be difficult to transmit to outside.
As described above, one on a side (front exhaust pipe 111) in front exhaust pipe 111 and rear part exhaust pipe 112
The inner peripheral surface 111d as inner peripheral portion and the peripheral surface 111f as peripheral part of end are respectively provided with the interior spiral shell as threaded portion
Line 111e and external screw thread 111g as threaded portion.The one end and front exhaust pipe of the outer barrel 118 of catalyst 116
111 and another party's (rear part exhaust pipe 112) in rear part exhaust pipe 112 one end respectively with internal thread 111e and external screw thread
111g is screwed.
Supporting structure according to the structure, the segmenting structure and catalyst 116 that can make exhaust pipe 110 is simple, energy
Enough reduce cost.
<4th embodiment>
Fig. 6 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe 120 for indicating the 4th embodiment.The 4th
In embodiment, identical label, detailed description will be omitted are marked to structure identical with first embodiment.
Exhaust pipe 120 is by being divided into two-part front exhaust pipe 121 and rear part exhaust pipe 122 to constitute.
Front exhaust pipe 121 has the front pipe portion 121a extended from cylinder head 47 (referring to Fig.1) side and is integrally formed at
The front wide diameter portion 121b of the rear end of front pipe portion 121a.Front wide diameter portion 121b be carried out than front pipe portion 121a it is expanding
Part.
Rear part exhaust pipe 122 has the rear portion pipe portion 122a extended from silencer 56 (referring to Fig.1) side and is integrally formed at
The rear portion wide diameter portion 122b of the front end of rear portion pipe portion 122a.Rear portion wide diameter portion 122b be carried out than rear portion pipe portion 122a it is expanding
Part.
Above-mentioned front wide diameter portion 121b and rear portion wide diameter portion 122b constitutes catalyst supports portion 124, catalyst 126
Both ends are supported on catalyst supports portion 124.
Catalyst 126 is fixed on catalyst supports portion 124 by catalyst fixing piece 84.
It is carried out between 85,85 couples of front wide diameter portion 121b of a pair of of washer and rear portion wide diameter portion 122b and catalyst 126
Sealing.A pair of of tape member 86,86 fastens front wide diameter portion 121b and rear portion wide diameter portion 122b from outside.Secure component 87 is to band portion
Part 86 generates fastening force.
Catalyst 126 by holding catalyst columned keeping body 91, be kept outer barrel 128 that body 91 is inserted into,
And the heat shield 129 for the tubular being fixed on the peripheral surface 128a of outer barrel 128 is constituted.
Catalyst 126 across configuration front exhaust pipe 121 front wide diameter portion 121b and rear part exhaust pipe 122
Rear portion wide diameter portion 122b.
Front wide diameter portion 121b has：Front tapering 121d, with from the front sides pipe portion 121a towards front exhaust pipe
121 end face 121c and gradually it is expanding；And front large-diameter portion 121e, extend from the rear end of front tapering 121d.
Rear portion wide diameter portion 122b has：Rear portion tapering 122d, with from the rear portion sides pipe portion 122a towards rear part exhaust pipe
122 end face 122c and gradually it is expanding；And rear portion large-diameter portion 122e, extend from the front end of rear portion tapering 122d.
Part i.e. front end side exposed division about the upstream end sides 128b not covered by heat shield 129 in outer barrel 128
128c is cased with washer 85 on the exposed division 128c of the front end side, and front end side exposed division 128c is inserted into front exhaust pipe 121
Front large-diameter portion 121e in, and be fastened and fixed from the outside of front large-diameter portion 121e by tape member 86.
Part i.e. rear end side exposed division about the downstream sides 128d not covered by heat shield 129 in outer barrel 92
128e is cased with washer 85 on rear end side exposed division 128e, and rear end side exposed division 128e is inserted into rear part exhaust pipe 122
Rear portion large-diameter portion 122e in, and be fastened and fixed from the outside of rear portion large-diameter portion 122e by tape member 86.
Heat shield 129 is by a pair of cyclic annular fixed part 129a, 129a, a pair of tapering 129b, 129b and intermediate canister portion 129c
It constitutes.
A pair of ring-type fixed part 129a, 129a are fixed in the peripheral surface 128a of outer barrel 128.A pair of of tapering 129b, 129b
With from the end of cyclic annular fixed part 129a, 129a towards direction close to each other and gradually it is expanding.Intermediate canister portion 129c connections
A pair of of tapering 129b, 129b.
It is provided with gap 125 between above-mentioned outer barrel 128 and a pair of tapering 129b, 129b and intermediate canister portion 129c.Pass through
The gap 125 is set, using heat-blocking action, the heat that the keeping body 91 of catalyst 126 generates can be made to be difficult to pass to outside
It passs.
In addition, as described above, heat shield 129 has following function：Being formed on the peripheral surface 128a of outer barrel 128 can match
The front end side exposed division 128c and rear end side exposed division 128e for setting washer 85,85 and being positioned.
In the state that catalyst 126 is fixed on front exhaust pipe 121 and rear part exhaust pipe 122, front exhaust pipe
121 end face 121c and the end face 122 of rear part exhaust pipe 122 L3 separated by a distance.In this way, by by front exhaust pipe 121 with after
Portion's exhaust pipe 122 detach, be fixed on the cylinder head 47 (referring to Fig.1) of engine 36 (referring to Fig.1) front exhaust pipe 121, with
Thermal expansion when being fixed on the engine operating of the silencer 56 of vehicle body frame 11 (referring to Fig.1) is absorbed.
As the method that catalyst 126 is assembled in exhaust pipe 120, can with by the first embodiment party shown in Fig. 2
The method that the catalyst 57 of formula is assembled in exhaust pipe 54 is identical.
It is expanding at the rear portion that catalyst 126 is inserted into rear part exhaust pipe 122 from the downstream sides 128d of outer barrel 128
When in portion 122b, the rear end side exposed division 128e of outer barrel 128 is inserted into the rear portion large-diameter portion 122e of rear part exhaust pipe 122,
And it is inserted into the downstream 85a of washer 85 and is abutted with the rear portion tapering 122 of rear part exhaust pipe 122.At this point, the upstream end of washer 85
85b is abutted with the downstream 129d of heat shield 129, to determine catalyst 126 relative to rear part exhaust pipe 122
Position.
In addition, in the state that washer 85 to be sleeved on to the front end side exposed division 128c of catalyst 126, by the washer
85 when being inserted into the front large-diameter portion 121e of front exhaust pipe 121, and the upstream end 85b of washer 85 is abutted to front tapering
On 121d.The downstream 85a of washer 85 is abutted with the upstream end 129e of heat shield 129.In this way, relative to front exhaust pipe 121,
Catalyst 126 is positioned.
<5th embodiment>
Fig. 7 is the longitudinal section view of the catalyst supporting structure for the exhaust pipe 130 for indicating the 5th embodiment.The 5th
In embodiment, identical label, detailed description will be omitted are marked to structure identical with first embodiment.
Exhaust pipe 130 is by being divided into two-part front exhaust pipe 131 and rear part exhaust pipe 132 to constitute.
Front exhaust pipe 131 has the front pipe portion 131a extended from cylinder head 47 (referring to Fig.1) side and is integrally formed at
The front wide diameter portion 131b of the rear end of front pipe portion 131a.Front wide diameter portion 131b be carried out than front pipe portion 131a it is expanding
Part.
Rear part exhaust pipe 132 has the rear portion pipe portion 132a extended from silencer 56 (referring to Fig.1) side and is integrally formed at
The rear portion wide diameter portion 132b of the front end of rear portion pipe portion 132a.Rear portion wide diameter portion 132b be carried out than rear portion pipe portion 132a it is expanding
Part.
Above-mentioned front wide diameter portion 131b and rear portion wide diameter portion 132b constitutes catalyst supports portion 134, catalyst 136
It holds in catalyst supports portion 134.
Catalyst 136 is anchored on catalyst supports portion 134 by a pair of of nut part 135,135.
The front wide diameter portion 131b of front exhaust pipe 131 is formed with external screw thread 131d in its peripheral surface 131c.In addition, rear portion
The rear portion wide diameter portion 132b of exhaust pipe 132 is formed with external screw thread 132d in its peripheral surface 132c.
Catalyst 136 by holding catalyst columned keeping body 91 and be kept the outer barrel 138 that body 91 is inserted into
It constitutes.
Catalyst 136 is by across the front wide diameter portion 131b and rear part exhaust pipe 132 for being supported on front exhaust pipe 131
Rear portion wide diameter portion 132b.
Outer barrel 138 is made of flange part 138b, 138b of canister portion 138a and the both ends for being integrally formed at canister portion 138a.
Flange part 138b, 138b be configured to respectively across cricoid washer 137 and with the end face of front wide diameter portion 131b
The end face 132e of 131e and rear portion wide diameter portion 132b are opposed.Also, flange part 138b, 138b are respectively by nut part 135
It is anchored on front wide diameter portion 131b and rear portion wide diameter portion 132b across washer 137.
In nut part 135 extends from nut body 135a and from one end of nut body 135a to radial direction inside
Flange 135b is constituted.Nut body 135a is formed with internal thread 135d in inner circumferential surface 135c.Internal thread 135d and front are expanding
The external screw thread 132d of the external screw thread 131d and rear portion wide diameter portion 132b of portion 131b are screwed.Inward flange 135b is pressed against outer barrel
138 flange part 138b, 138b.
The above embodiment is only to indicate the mode of the present invention, can be without departing from the spirit and scope of the invention
Arbitrarily is deformed and applied.
The present invention be not limited to be applied to automotive bicycle 10 the case where, can also apply to comprising automotive bicycle 10 with
The saddle-ride type vehicle of outer vehicle.In addition, so-called saddle-ride type vehicle includes across all vehicles taken on car body, it is packet
Vehicle containing the three-wheeled vehicle or four-wheel car for being classified as ATV (full landform driving vehicle).
Claims (8)
1. a kind of catalyst supporting structure of exhaust pipe, which is characterized in that
It is split in the midway of connection cylinder head (47) and the exhaust pipe (54,100,110) of silencer (56), with across the row
The mode of the cutting part (81c, 82c, 101c, 102c, 111c, 112c) of tracheae (54,100,110) come configure outer barrel (92,108,
118), which constitutes the catalyst (57,106,116) for purifying exhaust gas using catalyst, and
Before and after the cutting part (81c, 82c, 101c, 102c, 111c, 112c) segmentation exhaust pipe (81,82,101,102,
111,112) in a side (81,101,111) be arranged the fixed outer barrel (92,108,118) one end fixed part (81b,
101b, 111b), so that another party (82,102,112) in the segmentation exhaust pipe (81,82,101,102,111,112) is kept
The other end of the outer barrel (92,108,118), to across in segmentation exhaust pipe (81,82,101,102,111,112)
The mode of one side (81,101,111) and another party (82,102,112) detachably install the outer barrel (92,108,118).
2. a kind of catalyst supporting structure of exhaust pipe, which is characterized in that
It is split, will divide in the midway of connection cylinder head (47) and the exhaust pipe (54,100,120,130) of silencer (56)
A side (81,101,121,131) in the segmentation exhaust pipe (81,82,101,102,121,122,131,132) gone out and another party
(82,102,122,132) respective end configured separate, and by outer barrel (92,108,128,138) across configuration at described point
Cut a side (81,101,121,131) in exhaust pipe (81,82,101,102,121,122,131,132) and another party (82,
102,122,132) on respective end, the outer barrel (92,108,128,138) is constituted purifies urging for exhaust gas using catalyst
Change converter (57,106,126,136), to which the outer barrel (92,108,128,138) to be supported on by loading and unloading freely
A side (81,101,121,131) and another party in the segmentation exhaust pipe (81,82,101,102,121,122,131,132)
(82,102,122,132) respective end.
3. the catalyst supporting structure of exhaust pipe according to claim 1 or 2, which is characterized in that
The gas of the exhaust pipe (54) and the engine (36) being supported on the vehicle body frame (11) of saddle-ride type vehicle (10)
Cylinder cap (47) connects, and the vehicle body frame (11) has the lower vehicle frame extended from the preceding standpipe (21) for constituting its front end to downside
(27), the exhaust pipe (54,100,110,120,130) is being configured at prolonging along the vertical direction around the lower vehicle frame (27)
The part stretched is divided, the upper end of the outer barrel (92,108,118,128,138) and the segmentation exhaust pipe (81,82,
101,102,111,112,121,122,131,132) in a side (81,101,111,121,131) lower end connection.
4. the catalyst supporting structure of exhaust pipe described in any one of claim 1 to 3, which is characterized in that
The outer barrel (92,128) is fixed in the segmentation exhaust pipe (81,82,121,122) by fixed component (86).
5. the catalyst supporting structure of exhaust pipe described in any one of claim 1 to 3, which is characterized in that
The side being formed on the outer barrel (108) of the catalyst (106) in external screw thread (108e) and internal thread, should
A side in external screw thread (108e) and internal thread with formed on the side (101) in the segmentation exhaust pipe (101,102)
Another party in external screw thread and internal thread (101e) is screwed.
6. the catalyst supporting structure of exhaust pipe according to claim 1 or 3, which is characterized in that
The inner peripheral portion (111d) and peripheral part of the one end on a side (111) in the segmentation exhaust pipe (111,112)
(111f) is respectively provided with threaded portion (111e, 111g), the one end of the outer barrel (118) of the catalyst (116) with
And the one end and the threaded portion (111e, 111g) screw thread knot of another party (112) in the segmentation exhaust pipe (111,112)
It closes.
7. the catalyst supporting structure of exhaust pipe described in any one of claim 1 to 3, which is characterized in that
The inner circumferential of peripheral part (108d) and the other end of the one end of the outer barrel (108) of the catalyst (106)
Portion (108m) is respectively provided with threaded portion (108e, 108p), the respective end of the segmentation exhaust pipe (101,102) and the screw thread
Portion (108e, 108p) is screwed.
8. the catalyst supporting structure of exhaust pipe according to claim 7, which is characterized in that
The outer barrel (108) has the inside canister portion (108f) integrally extended from one end and outer side tube part (108g), institute
It states outer side tube part (108g) to be configured on the outside of the radius of the inside canister portion (108f), threaded portion (the 108e, 108p) shape
The end of the one end of outer barrel described in Cheng Yu (108) and the outer side tube part (108g).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-062722 | 2017-03-28 | ||
| JP2017062722A JP6668285B2 (en) | 2017-03-28 | 2017-03-28 | Exhaust pipe catalytic converter support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108661761A true CN108661761A (en) | 2018-10-16 |
| CN108661761B CN108661761B (en) | 2021-07-20 |
Family
ID=63785182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810220552.1A Active CN108661761B (en) | 2017-03-28 | 2018-03-16 | Catalytic converter supporting structure of exhaust pipe |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6668285B2 (en) |
| CN (1) | CN108661761B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814773A (en) * | 2019-11-15 | 2021-05-18 | 马自达汽车株式会社 | Exhaust pipe structure of internal combustion engine-mounted vehicle and manufacturing method of internal combustion engine-mounted vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5536901U (en) * | 1978-08-29 | 1980-03-10 | ||
| JPS56127815U (en) * | 1980-02-29 | 1981-09-29 | ||
| CN1041705A (en) * | 1988-10-11 | 1990-05-02 | 埃米特放射技术股份有限公司 | The catalytic converter of band duplicating device |
| JPH0754642A (en) * | 1993-08-16 | 1995-02-28 | Suzuki Motor Corp | Exhaust device of engine |
| CN2764946Y (en) * | 2005-04-04 | 2006-03-15 | 赖鸿山 | Detachable catalysis converter of sound absorber |
| CN2866849Y (en) * | 2006-01-13 | 2007-02-07 | 南京金城机械有限公司 | Two-connector silencing device |
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2017
- 2017-03-28 JP JP2017062722A patent/JP6668285B2/en active Active
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2018
- 2018-03-16 CN CN201810220552.1A patent/CN108661761B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536901U (en) * | 1978-08-29 | 1980-03-10 | ||
| JPS56127815U (en) * | 1980-02-29 | 1981-09-29 | ||
| CN1041705A (en) * | 1988-10-11 | 1990-05-02 | 埃米特放射技术股份有限公司 | The catalytic converter of band duplicating device |
| JPH0754642A (en) * | 1993-08-16 | 1995-02-28 | Suzuki Motor Corp | Exhaust device of engine |
| CN2764946Y (en) * | 2005-04-04 | 2006-03-15 | 赖鸿山 | Detachable catalysis converter of sound absorber |
| CN2866849Y (en) * | 2006-01-13 | 2007-02-07 | 南京金城机械有限公司 | Two-connector silencing device |
Non-Patent Citations (1)
| Title |
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| 李英亮: "《紧固件概论》", 31 January 2014 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814773A (en) * | 2019-11-15 | 2021-05-18 | 马自达汽车株式会社 | Exhaust pipe structure of internal combustion engine-mounted vehicle and manufacturing method of internal combustion engine-mounted vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6668285B2 (en) | 2020-03-18 |
| JP2018165483A (en) | 2018-10-25 |
| CN108661761B (en) | 2021-07-20 |
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