EP1586753A2 - Fastening system of an exhaust group to a scooter - Google Patents
Fastening system of an exhaust group to a scooter Download PDFInfo
- Publication number
- EP1586753A2 EP1586753A2 EP05102728A EP05102728A EP1586753A2 EP 1586753 A2 EP1586753 A2 EP 1586753A2 EP 05102728 A EP05102728 A EP 05102728A EP 05102728 A EP05102728 A EP 05102728A EP 1586753 A2 EP1586753 A2 EP 1586753A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- scooter
- muffler
- fastening system
- exhaust
- frame
- 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.)
- Withdrawn
Links
Images
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
- 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
- F01N13/1822—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 for fixing exhaust pipes or devices to vehicle body
-
- 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
- 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
- F01N13/1816—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 the pipe sections being joined together by flexible tubular elements only, e.g. using bellows or strip-wound pipes
Definitions
- the present invention concerns a fastening system of an exhaust group to a scooter.
- the engine In the field of two-wheeled vehicles known as scoters, the engine is typically an integral part of the rear fork that in such a way makes the rear suspension.
- the engine is "hinged" to the frame and oscillates with respect to it about a centre of rotation.
- the muffler is therefore installed integrally to the engine, fixing the manifold of the muffler to the exhaust hole present on the engine, whereas the end part thereof is fixed to the engine by means of a rear suspension element.
- a suspension element is, in general, also used for the attachment of the shock absorber.
- the muffler like the engine, also has an oscillating movement with respect to the frame and, consequently, the entire exhaust system increases the so-called “non-suspended mass" of the vehicle.
- this is the mass of the components of the vehicle integral with the wheels.
- rider comfort can even reach critical levels also from the point of view of safety.
- the purpose of the present invention is that of solving the problems of the prior art by providing a fastening system of an exhaust group to a scooter that allows the non-suspended masses to be reduced and allows the suspended masses of the vehicle to be increased, at the same time improving rider comfort.
- Another purpose of the present invention is that of providing a fastening system of an exhaust group to a scooter that allows the transmission of the vibrations generated by the unevenness of the road surface in the interface points between vehicle and rider to be decreased.
- Another purpose of the present invention is that of providing a reliable and safe fastening system of an exhaust group to a scooter that is, at the same time, easy and cost-effective to produce.
- a fastening system of an exhaust group comprising at least one muffler and at least one manifold pipe to a scooter according to the present invention is characterised in that it comprises at least one flexible coupling, arranged between the muffler and the exhaust hole of the engine, and attachment means suitable for connecting the muffler to the frame of the scooter.
- a fastening system of an exhaust group equipped with at least one muffler 2 and with at least one manifold pipe 3', 3, 4, to a scooter 10 is shown.
- the fastening system has a flexible coupling 5, arranged between the muffler 2 and the exhaust hole 6 of the engine 7, and suitable attachment means 8 suitable for connecting the muffler 2 to the frame 9 of the scooter.
- attachment means 8 are arranged to fasten the muffler 2, near to its rear portion, to the end portion of the frame 9.
- the attachment means 8 are represented by a first bracket 14, integral with the muffler 2, by a second bracket 15, integral with the frame 9, and by a support arm 16, hinged to both of the brackets 14, 15.
- the support arm 16 is hinged, through known means such as screws and bolts, at one end to the first bracket 14 and at the other end to the second bracket 15.
- the support arm 16 could be integral with the frame 9, in other words made as a projecting portion of the frame itself, and hinged at the free end to a bracket integral with the muffler 2.
- suspension arm 16 can be integral with the muffler 2 and be hinged to a bracket integral with the frame 9.
- the flexible coupling 5 is connected and arranged between a first 3 and second 4 manifold pipe.
- first manifold pipe 3 connects the coupling 5 to the exhaust hole 6 of the engine 7, whereas the second manifold pipe 4 connects the coupling 5 to the muffler 2.
- the flexible coupling 5 is positioned near to the centre of rotation 11 of the engine 7 with respect to the frame 9 so as to reduce possible ripping away on the coupling itself, whilst the scooter 10 moves.
- protective elements 12, 13 are foreseen, at least one of which is hinged on the centre of rotation 11 of the engine 7 with respect to the frame 9.
- the two protective elements 12, 13 partially wrap around the flexible coupling 5 and the end portions of the manifold pipes 3 and 4 and are shaped to protect the coupling, as well as from torsions, also from relative axial and lateral movements of the manifold pipes 3 and 4.
- FIG 4 an alternative embodiment of the present invention is shown that is totally similar to the one illustrated in figures 1 to 3 apart from the fact that it has just one manifold pipe 3' and attachment means 8 of the muffler 2 to the alternative frame 9.
- manifold pipe 3' is connected at one end to the exhaust hole 6 of the engine 7 and at the other end to the flexible coupling 5.
- the flexible coupling 5, as shown in figure 4, is directly connected to the muffler 2.
- the flexible coupling 5 is positioned at the centre of rotation 11 of the engine 7 with respect to the frame.
- the attachment means 8, as shown in figure 4 according to the present embodiment, comprise a first bracket 14', integral with the muffler 2, hinged directly to the frame 9 of the scooter 10.
- the fastening system of the exhaust group to the scooter according to the present invention allows the mass of the exhaust group to be transformed from non-suspended mass into suspended mass, improving rider comfort.
- the mass of the exhaust group is no longer, like in conventional scooters, integral with the engine and with its oscillations with respect to the frame, but is separate from it and from its oscillating movements, so as to be suspended at the frame.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Fastening system of an exhaust group, of the type
equipped with at least one muffler (2) and at least one
manifold pipe (3, 4, 3'), to a scooter (10). The
fastening system has at least one flexible coupling
(5), arranged between the muffler (2) and the exhaust
hole (6) of the engine (7), and attachment means (8)
suitable for connecting the muffler to the frame (9) of
the scooter (10).
Description
The present invention concerns a fastening system of an
exhaust group to a scooter.
In the field of two-wheeled vehicles known as scoters,
the engine is typically an integral part of the rear
fork that in such a way makes the rear suspension.
According to the aforementioned solution the engine is
"hinged" to the frame and oscillates with respect to it
about a centre of rotation.
In this type of embodiment, the muffler is therefore
installed integrally to the engine, fixing the manifold
of the muffler to the exhaust hole present on the
engine, whereas the end part thereof is fixed to the
engine by means of a rear suspension element. Such a
suspension element is, in general, also used for the
attachment of the shock absorber.
In this way, the muffler, like the engine, also has an
oscillating movement with respect to the frame and,
consequently, the entire exhaust system increases the
so-called "non-suspended mass" of the vehicle.
In other words, this is the mass of the components of
the vehicle integral with the wheels.
Therefore, a distribution of the masses is created that
is particularly disadvantageous from the point of view
of rider comfort, meaning the degree of transmission to
the rider, through the interface points (handlebars,
foot rest, seat), of the vibrations originating from
the unevenness of the road surface.
In some cases, rider comfort can even reach critical
levels also from the point of view of safety.
In light of the above, there is clearly a need to be
able to have a fastening system of an exhaust group to
a scooter that ensures that most of the mass linked to
the exhaust system, integral with the oscillating
engine, is transformed into suspended mass improving
rider comfort.
Therefore, the purpose of the present invention is that
of solving the problems of the prior art by providing a
fastening system of an exhaust group to a scooter that
allows the non-suspended masses to be reduced and
allows the suspended masses of the vehicle to be
increased, at the same time improving rider comfort.
Another purpose of the present invention is that of
providing a fastening system of an exhaust group to a
scooter that allows the transmission of the vibrations
generated by the unevenness of the road surface in the
interface points between vehicle and rider to be
decreased.
Another purpose of the present invention is that of
providing a reliable and safe fastening system of an
exhaust group to a scooter that is, at the same time,
easy and cost-effective to produce.
These and other purposes are accomplished by the
fastening system of an exhaust group to a scooter
according to the present invention that has the
characteristics of the attached claim 1.
Substantially, a fastening system of an exhaust group,
comprising at least one muffler and at least one
manifold pipe to a scooter according to the present
invention is characterised in that it comprises at
least one flexible coupling, arranged between the
muffler and the exhaust hole of the engine, and
attachment means suitable for connecting the muffler to
the frame of the scooter.
Further characteristics and advantages of the present
invention shall become clearer from the following
description, given for illustrative and not limiting
purposes, with reference to the attached drawings, in
which:
- figure 1 shows a side view of the rear of a scooter equipped with the fastening system of the exhaust group according to the present invention;
- figure 2 shows an enlarged partial perspective view of a detail of the fastening system of an exhaust group to a scooter according to the present invention;
- figure 3 shows an enlarged view of the attachment means of the muffler to the frame of a scooter according to the present invention; and
- figure 4 shows a side view of the rear of a scooter equipped with a second embodiment of the fastening system of the exhaust group according to the present invention;
With reference to the figures, a fastening system of an
exhaust group, equipped with at least one muffler 2 and
with at least one manifold pipe 3', 3, 4, to a scooter
10 is shown.
The fastening system, according to a preferred
embodiment, shown in figures 1 to 3, has a flexible
coupling 5, arranged between the muffler 2 and the
exhaust hole 6 of the engine 7, and suitable attachment
means 8 suitable for connecting the muffler 2 to the
frame 9 of the scooter.
In detail, the attachment means 8 are arranged to
fasten the muffler 2, near to its rear portion, to the
end portion of the frame 9.
Advantageously, according to the present embodiment,
the attachment means 8 are represented by a first
bracket 14, integral with the muffler 2, by a second
bracket 15, integral with the frame 9, and by a support
arm 16, hinged to both of the brackets 14, 15.
In detail, the support arm 16 is hinged, through known
means such as screws and bolts, at one end to the first
bracket 14 and at the other end to the second bracket
15.
Alternatively, the support arm 16 could be integral
with the frame 9, in other words made as a projecting
portion of the frame itself, and hinged at the free end
to a bracket integral with the muffler 2.
In a further embodiment, the suspension arm 16 can be
integral with the muffler 2 and be hinged to a bracket
integral with the frame 9.
Returning to the preferred embodiment, shown in figures
1-3, it is revealed that the flexible coupling 5 is
connected and arranged between a first 3 and second 4
manifold pipe.
In detail, the first manifold pipe 3 connects the
coupling 5 to the exhaust hole 6 of the engine 7,
whereas the second manifold pipe 4 connects the
coupling 5 to the muffler 2.
On the second manifold pipe 4, as shown in figure 1,
there is a flanged portion 17 suitable for coupling,
through known means such as screws and bolts, with a
corresponding flanged portion 18 of the muffler 2.
According to the present invention, the flexible
coupling 5 is positioned near to the centre of rotation
11 of the engine 7 with respect to the frame 9 so as to
reduce possible ripping away on the coupling itself,
whilst the scooter 10 moves.
A flexible coupling particularly suitable for the
purpose is described in patent EP0083910 to Tubiflex
S.p.A.
To protect the flexible coupling from dangerous
relative torsions between the manifold pipes 4 and 5,
protective elements 12, 13 are foreseen, at least one
of which is hinged on the centre of rotation 11 of the
engine 7 with respect to the frame 9.
The two protective elements 12, 13 partially wrap
around the flexible coupling 5 and the end portions of
the manifold pipes 3 and 4 and are shaped to protect
the coupling, as well as from torsions, also from
relative axial and lateral movements of the manifold
pipes 3 and 4.
In figure 4 an alternative embodiment of the present
invention is shown that is totally similar to the one
illustrated in figures 1 to 3 apart from the fact that
it has just one manifold pipe 3' and attachment means 8
of the muffler 2 to the alternative frame 9.
In detail, the manifold pipe 3' is connected at one end
to the exhaust hole 6 of the engine 7 and at the other
end to the flexible coupling 5.
The flexible coupling 5, as shown in figure 4, is
directly connected to the muffler 2.
Also according to this embodiment, the flexible
coupling 5 is positioned at the centre of rotation 11
of the engine 7 with respect to the frame.
The attachment means 8, as shown in figure 4 according
to the present embodiment, comprise a first bracket
14', integral with the muffler 2, hinged directly to
the frame 9 of the scooter 10.
The fastening system of the exhaust group to the
scooter according to the present invention allows the
mass of the exhaust group to be transformed from non-suspended
mass into suspended mass, improving rider
comfort.
In other words, the mass of the exhaust group is no
longer, like in conventional scooters, integral with
the engine and with its oscillations with respect to
the frame, but is separate from it and from its
oscillating movements, so as to be suspended at the
frame.
In such a way, the transmission of vibrations
originating from the unevenness of the road surface in
the interface points between scooter and rider is
reduced, increasing rider comfort.
The present invention has been described for
illustrating, but not limiting purposes, according to
its preferred embodiments, but it should be understood
that variations and/or modifications can be brought by
men skilled in the art without for this reason
departing from the relative scope of protection, as
defined by the attached claims.
Claims (8)
- Fastening system of an exhaust group, comprising at least one muffler (2) and at least one manifold pipe (3, 4), to a scooter (10) characterised in that it comprises at least one flexible coupling (5), arranged between said muffler (2) and the exhaust hole (6) of the engine (7), and attachment means (8) suitable for connecting said muffler (2) to the frame (9) of the scooter (10).
- Fastening system of an exhaust group according to claim 1, characterised in that said flexible coupling (5) is positioned near to the centre of rotation (11) of the engine with respect to the frame (9) of the scooter (10).
- Fastening system of an exhaust group according to any one of the previous claims, characterised in that it comprises at least one protective element (12, 13), hinged to said frame (9) at said centre of rotation (11) of the engine, suitable for protecting said flexible coupling (5) and for avoiding dangerous movements of said flexible coupling (5).
- Fastening system of an exhaust group according to any one of the previous claims, characterised in that it comprises a first manifold pipe (3) connected to said exhaust hole (6) of the engine (7) and to said flexible coupling (5) and a second manifold pipe (4) connected to said flexible coupling (5) and to said muffler (2).
- Fastening system of an exhaust group according to any one of claims 1 to 3, characterised in that it comprises a single manifold pipe (3') connected at one end to said exhaust hole (6) of the engine and at the other end to said flexible coupling (5) in turn directly connected to said muffler (2).
- Fastening system of an exhaust group according to any one of the previous claims, characterised in that said attachment means (8) comprise a first bracket (14) integral with said muffler (2), a second bracket (15) integral with the frame (9) of the scooter and a connection arm (16) hinged at one end to said first bracket (14) and at the other end to said second bracket (15).
- Fastening system of an exhaust group according to any one of the previous claims from 1 to 5, characterised in that said attachment means (8) comprise a first bracket (14') integral with said muffler (2), hinged directly to said frame (9) of the scooter.
- Scooter characterised in that it comprises a fastening system of an exhaust group to the scooter according to any one of the previous claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI20040736 ITMI20040736A1 (en) | 2004-04-14 | 2004-04-14 | CONNECTION SYSTEM OF A DISCHARGE GROUP TO A SCOOTER |
| ITMI20040736 | 2004-04-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1586753A2 true EP1586753A2 (en) | 2005-10-19 |
| EP1586753A3 EP1586753A3 (en) | 2007-05-30 |
Family
ID=34939174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05102728A Withdrawn EP1586753A3 (en) | 2004-04-14 | 2005-04-07 | Fastening system of an exhaust group to a scooter |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1586753A3 (en) |
| CN (1) | CN1683204A (en) |
| IT (1) | ITMI20040736A1 (en) |
| TW (1) | TW200537013A (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4307998C2 (en) * | 1993-03-13 | 2002-01-31 | Porsche Ag | Device for reducing body vibrations |
| JPH06336922A (en) * | 1993-05-31 | 1994-12-06 | Suzuki Motor Corp | Exhaust muffler for scooter type vehicles |
| JPH07166859A (en) * | 1993-12-16 | 1995-06-27 | Yamaha Motor Co Ltd | A muffler with a variable mounting angle for motorcycles, etc. |
| EP0875409B1 (en) * | 1997-04-28 | 2002-11-27 | Scambia Industrial Developments Aktiengesellschaft | Exhaust system for a motor vehicle and process for making an exhaust system |
-
2004
- 2004-04-14 IT ITMI20040736 patent/ITMI20040736A1/en unknown
-
2005
- 2005-04-07 EP EP05102728A patent/EP1586753A3/en not_active Withdrawn
- 2005-04-11 TW TW94111337A patent/TW200537013A/en unknown
- 2005-04-14 CN CN 200510065219 patent/CN1683204A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN1683204A (en) | 2005-10-19 |
| EP1586753A3 (en) | 2007-05-30 |
| ITMI20040736A1 (en) | 2004-07-14 |
| TW200537013A (en) | 2005-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9022157B2 (en) | Motorcycle | |
| CN102562246B (en) | Muffler mounting structure of vehicle and straddle-type four-wheeled vehicle provided with the same | |
| JP6286468B2 (en) | Saddle riding vehicle | |
| CN107428388A (en) | The sensor unit mounting structure of saddle-riding type vehicle | |
| US11345430B2 (en) | Front fork lower portion structure of saddle riding vehicle | |
| US7565945B2 (en) | Rough-terrain traveling vehicle provided with electrically-driven power steering apparatus | |
| US9862446B2 (en) | Electrical component mounting structure for saddle-riding type vehicle | |
| JP6106482B2 (en) | Saddle riding vehicle | |
| US6070846A (en) | Vibration dampening rearview mirror support structure | |
| JP4995060B2 (en) | Motorcycle exhaust system | |
| US7503415B2 (en) | Engine support structure of motorcycle | |
| US7523800B2 (en) | Saddle-type vehicle | |
| CN103863462A (en) | Riding-type vehicle fuel tank installation structure | |
| JP3813422B2 (en) | Engine guard device for motorcycles | |
| EP1586753A2 (en) | Fastening system of an exhaust group to a scooter | |
| WO2018047060A1 (en) | A guard member for exhaust pipe of a saddle-ride type vehicle | |
| JP5295688B2 (en) | Motorcycle | |
| CN111183276B (en) | Exhaust gas sensor mounting structure | |
| JP2011131733A (en) | Footrest brake device installing structure of motorcycle | |
| JP6491043B2 (en) | Mounting structure for motorcycle electrical components | |
| US8827346B2 (en) | Protector | |
| JP2000344171A (en) | Motorcycle fork brace structure | |
| CN108688754B (en) | A step-by-step vehicle | |
| JP4295049B2 (en) | Anti-vibration device for motorcycle engine | |
| CN103237720B (en) | Straddle riding type vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
| 17P | Request for examination filed |
Effective date: 20071029 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20091031 |