EP3359407A1 - Structure d'absorption de choc, platine de support d'echappement associee, et procede de montage correpondant - Google Patents
Structure d'absorption de choc, platine de support d'echappement associee, et procede de montage correpondantInfo
- Publication number
- EP3359407A1 EP3359407A1 EP16790649.4A EP16790649A EP3359407A1 EP 3359407 A1 EP3359407 A1 EP 3359407A1 EP 16790649 A EP16790649 A EP 16790649A EP 3359407 A1 EP3359407 A1 EP 3359407A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shock absorbing
- plate
- absorbing structure
- vehicle
- lug
- 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- Withdrawn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
- 230000035939 shock Effects 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims description 9
- 230000000284 resting effect Effects 0.000 claims abstract description 3
- 238000010521 absorption reaction Methods 0.000 claims description 30
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000003032 molecular docking Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 14
- 239000002184 metal Substances 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
- B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
Definitions
- the object of the invention is motor vehicle architectures and more particularly the rear structures of a motor vehicle.
- At the rear of the vehicles with thermal or hybrid propulsion are generally two recurring functions, a function of protection of the chassis vis-à-vis the shocks coming from the rear of the vehicle, and a function of rejection and gases of vehicle exhaust.
- Shock protection is generally provided by a rear bumper beam mounted on deformable blocks configured to absorb at least a portion of the impact energy. This cross is usually hidden by a piece of plastic trim, which is the bumper shield.
- the exhaust and exhaust is performed in the lower part of the rear of the vehicle, for example by a muffler end opening beneath the bumper rear bumper.
- the aim of the invention is to propose a rear vehicle structure enabling the end of the muffler to be opened in the vicinity of the bumper shield.
- the invention also proposes a method of assembling such a rear bumper structure.
- a rear structure for a motor vehicle comprising:
- an impact absorption structure configured to engage the chassis
- connection means configured to support the gas outlet with respect to the chassis.
- the connecting means is configured to be assembled on the shock absorbing structure, bearing on it.
- the shock absorbing structure may comprise a planar landing flange configured to abut on the frame, the flat flange being pierced with at least one orifice adapted for bolting the shock absorption structure on the frame. of the vehicle, and the flat flange being provided with at least one lug projecting from the flat flange, in the mounted position, in the direction opposite to the chassis.
- the shock absorbing structure may typically comprise at least one deformable block bearing on the chassis of the vehicle, and typically comprise two deformable blocks distant from each other, each bearing on the chassis of the vehicle, and supporting the same bumper beam back.
- the cross member and the one or both deformable blocks can be formed in one piece. This piece may sometimes be referred to as the "rear cross member”.
- deformable block is meant a block designed to deform sacrificially before the other surrounding parts in case of impact on the shock absorbing structure.
- the lug is at a distance from the orifice at most equal to the greatest width of the flat flange.
- the lug is thus placed so as to facilitate the prepositioning of the connecting means with respect to the shock absorption structure, in particular with regard to the area of the connecting means located near the lug. 'orifice.
- the planar flange may be pierced with at least two orifices of similar diameter (i.e., the smallest dimension of one of the orifices does not exceed three times the size of the other orifice).
- the two orifices may be located substantially on either side of a deformable block.
- the shock absorbing structure in the form of a rear crossmember may comprise two pairs of orifices situated respectively substantially on either side of a first deformable block and on either side of a second deformable block.
- the shock absorbing structure may have a total of only one lug, this lug adjacent to one of its orifices passing through its plane rim or one of its plane edges.
- the lug has at its base a portion of rectangular section.
- the lug is thus able to retain in rotation a plate pierced with a rectangular or elongated centering opening when this opening is threaded on the lug.
- the lug may for example be formed by cutting and folding a peripheral portion of the flange.
- the lug in the assembled position, is on one side with respect to a horizontal median plane of the shock absorbing structure, and forms a hook pointing towards the side opposite which separates the horizontal median plane.
- this corresponds to the fact that the hook is assembled under the median plane of the shock absorption structure, in the lower part of the shock absorption structure, and points upwards so as to be able to hold a plate connecting means on the shock absorbing structure in pre-assembly position.
- the connecting means comprise a plate provided with at least one assembly opening and at least one centering opening, the centering opening being configured so that it can be inserted around the pin. while superimposing the mounting hole of the platen with the orifice of the rim of the shock absorbing structure.
- the plate and the shock absorbing structure can thus be taken together to the chassis in the pre-assembly configuration, and can then be assembled by the same fastening means passing through the assembly opening. the plate and the orifice of the shock absorption structure.
- the plate may comprise a first substantially flat portion through which the assembly hole passes, and comprise a second portion substantially perpendicular to the first portion, and extending, in mounted position, away from the chassis of the vehicle.
- the second portion may be configured to be substantially horizontal in the mounted position, and may thus serve as a support for a muffler or outlet pipe of exhaust silencer of the vehicle. It is thus possible to support the muffler at an offset position toward the rear of the vehicle, which limits the vibrations of the rear end of the muffler; It thus becomes possible to pass the end of the pot through a rear bumper shield without burning the polymer forming the bumper.
- the plate may comprise two assembly orifices superimposable on the two orifices of the shock absorption structure at the same time as the centering opening is inserted around the pin.
- a rear structure of a motor vehicle comprising a chassis, a shock absorption structure, an exhaust gas outlet and a connecting means configured to support the output of gas to the chassis, the method comprising the steps of:
- At least one plate that is initially independent of the shock absorbing structure is attached to a lug of the shock absorption structure so as to make at least one assembly orifice of the plate coincide with an orifice of assembly of the shock absorption structure,
- the shock absorption structure is assembled to the chassis of the vehicle by inserting at least one same assembly means simultaneously through the assembly opening of the shock absorbing structure and the orifice of the shock absorber. assembly of the plate,
- the assembly means is tightened so as to simultaneously press the plate against the shock absorbing structure and the shock absorbing structure against the chassis of the vehicle,
- the plate is suspended a portion of exhaust gas outlet of the vehicle. According to an advantageous embodiment, once the plate hooked to the shock absorption structure by means of the lug, the plate is released during the insertion of the assembly means.
- the same assembly means can pass simultaneously through a hole of the frame.
- a portion of the assembly means for example in the form of a bolt, is already attached to the frame, and protrudes from it. It is then possible to thread the assembly orifice of the plate and the orifice of the shock absorption structure around the same assembly means emerging from the chassis.
- FIG. 1 is a schematic view of a prior art rear vehicle structure
- FIG. 2 is a schematic perspective view of a bumper rear cross section according to the invention, and an associated exhaust outlet mounting plate;
- FIG. 3 is a schematic perspective view of two elements specific to a rear vehicle structure according to the invention.
- FIG. 1 illustrates a rear structure of a motor vehicle according to the prior art.
- This structure comprises in particular a rear part of a chassis 2, an outlet 3 of exhaust gas, and a structure 6 of shock absorption.
- the rear portion of the chassis is supported by rear wheels 9 of the vehicle.
- the outlet 3 of exhaust gas is connected by a connecting means 8 to the frame 2, the connecting means 8 coming to attach to the frame 2 independently of the shock absorption structure 6.
- the shock absorption structure 6 comprises in particular two deformable blocks 4, one of which bears on the left part of the frame and the other on the right side of the frame 2, the two deformable blocks 4 being connected transversely. by a portion of crossbar 5 assembled at the rear of the two blocks, so as to transfer any impact forces from behind to these blocks.
- the two deformable blocks are then crushed between the frame 2 and the rear cross member 5. They serve as sacrificial elements preferentially deforming to the frame 2.
- the deformable blocks 4 can be made as blocks voluminal material capable of consuming the energy of the impact under the effect of crushing, for example in the form of blocks of spongy metal structures, or may take the form of hollow beams, metal or composite, oriented parallel to the X direction progress of the vehicle.
- the end of the deformable block 4 bearing on the frame 2 can typically be closed by a rear face 10.
- the rear face 10 closes the end of the beam and thus limits the proportion of the beam. the beam to be crushed by tearing of its periphery.
- Figure 1 are shown in particular an X axis representing the direction of travel of the vehicle and a vertical axis Z directed upwards.
- FIG 2 is a schematic perspective view of a rear structure portion according to the invention and the associated rear bumper rear.
- the rear structure comprises, here again, a shock absorbing structure 6 comprising a rear crossmember 5 resting on two deformable blocks 4.
- Each deformable block 4 is assembled on the frame 2 by a rear face plate 10 which protrudes radially around each deformable block 4 by a support edge 1 1 located substantially in a plane parallel to the vertical geometric plane YZ. It is possible to envisage variant embodiments (not shown) in which the deformable block would be provided with a flange 11 without being closed at its support end on the frame 2.
- the exhaust gas outlet 3 is here supported by a connecting plate 20 assembled in abutment with the shock absorption structure 6.
- the plate 20 is in fact mounted in contact with the structure shock absorber 6, more precisely is mounted on the rear of the support edge 1 1 of this structure, here without direct contact with the frame 2. It is possible to envisage variants (not shown) in which the plate would be arranged at the rear of the abutment edge of the shock absorbing structure while presenting contact zones with other parts of the frame.
- the rearward position of the connecting means constituted by the plate 20 makes it possible to support the outlet 3 of the exhaust gas at an abscissa offset towards the rear of the vehicle, which limits the vibrations of the gas outlet 3 exhaust near its connection with the plate 20, and therefore in the vicinity of the bumper shield (not shown in the figures).
- the shock absorbing structure is assembled on the frame 2 by means of screws or studs 26 and 28. At least one of these screws or stud 26 passes simultaneously through an orifice assembly 22 formed in the plate 20 and an assembly hole 12 - visible in FIG. 3 - net formed through the support edge 11 of the shock absorbing structure 6.
- the plate 20 typically has a portion 24 substantially flat and coming in plane support on the support edge 1 1 of the structure 6 of shock absorption.
- the plate 20 also has a portion 25 substantially perpendicular to the portion 24 and provided to be oriented towards the rear of the vehicle, so as to deport back the support point of the outlet 3 of the exhaust gas.
- the means of assembly between the outlet 3 of the exhaust gas and the plate 20 are not shown, but are widely known. They may in particular comprise collars that hook onto an ajored portion of the horizontal portion 25 of the plate 20.
- the plate 20 may typically be made of steel by cutting and bending sheet metal.
- FIG. 3 is a diagrammatic perspective view of the plate 20 of FIG. 2, and of its zones of support on the contour 11 of the shock absorption structure 6 of FIG. 2.
- FIG. 3 some elements common to Figure 2, the same elements being designated by the same references.
- the plate 20 comprises, in this particular embodiment, a first assembly orifice 22 superimposed on a assembly plate 12 of the shock absorbing structure 6.
- the plate 20 further comprises in this particular case a second assembly hole 23 superimposed on an assembly orifice 1 3 also formed through the contour 1 1 of the shock absorption structure 6.
- the contours of the orifices 12 and 22 do not necessarily coincide, nor do the coincidences of the orifices 1 3 and 23 coincide.
- a single assembly orifice of the plate 20 coincides with a single orifice of assembly of the shock absorption structure.
- the plate 20 could be for example supported on the end of the flange 1 1 on the opposite side to the mounting hole, for example, by a vertical edge folded towards the rear of the plate.
- the rim January 1 is provided with a lug 7 obtained for example by cutting and folding a portion of the sheet forming the flange January 1.
- the lug 7 is inserted into a centering opening 27 of the plate 20, thanks to the rectangular shape of the base of the lug and the rectangular shape complementary to the opening 27.
- the plate 20 can thus be hung by means of the lug in pre-assembly position relative to the shock absorbing structure 6. It is thus possible to bring the shock absorption structure 6 on which is already pre-positioned the plate 20 , towards the chassis 2 during assembly.
- the chassis 2 may, according to certain embodiments, be provided with studs on which both the orifices 12-22 and the orifices 1 3-23 of the plate 20 and the structure 6 of absorption of shock. According to other embodiments, these orifices 12, 22, 13, 23 may be traversed by screws which are also inserted into orifices provided for this purpose on the frame 2.
- the lug 7 can be made very simply by folding a portion of the flange 1 1 of one of the deformable blocks of the shock absorption structure.
- the rear vehicle structure according to the invention makes it possible to envisage new configurations and new arrangements in the space of the exhaust gas outlet with respect to the rear bumper of the vehicle.
- the proposed geometries for the shock absorbing structure and for the associated exhaust gas outlet support plate make it possible to define simple assembly processes and to limit the number of part references to be managed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1559440A FR3041907B1 (fr) | 2015-10-05 | 2015-10-05 | Structure d'absorption de choc, platine de support d'echappement associee, et procede de montage correspondant. |
| PCT/FR2016/052528 WO2017060596A1 (fr) | 2015-10-05 | 2016-10-03 | Structure d'absorption de choc, platine de support d'echappement associee, et procede de montage correpondant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3359407A1 true EP3359407A1 (fr) | 2018-08-15 |
Family
ID=55072890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16790649.4A Withdrawn EP3359407A1 (fr) | 2015-10-05 | 2016-10-03 | Structure d'absorption de choc, platine de support d'echappement associee, et procede de montage correpondant |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3359407A1 (fr) |
| FR (1) | FR3041907B1 (fr) |
| WO (1) | WO2017060596A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7730996B2 (en) * | 2006-04-12 | 2010-06-08 | Ocv Intellectual Capital, Llc | Long fiber thermoplastic composite muffler system with integrated crash management |
| KR100946478B1 (ko) * | 2008-03-21 | 2010-03-10 | 현대자동차주식회사 | 차량용 리어범퍼 어셈블리 및 테일트림 커버 |
| US7823938B2 (en) * | 2008-10-17 | 2010-11-02 | Honda Motor Co., Ltd. | Bumper faceplate with ports |
| FR2945485B1 (fr) * | 2009-05-15 | 2012-10-12 | Renault Sas | Support de fixation d'un tube support d'echappement |
-
2015
- 2015-10-05 FR FR1559440A patent/FR3041907B1/fr active Active
-
2016
- 2016-10-03 WO PCT/FR2016/052528 patent/WO2017060596A1/fr not_active Ceased
- 2016-10-03 EP EP16790649.4A patent/EP3359407A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR3041907B1 (fr) | 2018-07-13 |
| WO2017060596A1 (fr) | 2017-04-13 |
| FR3041907A1 (fr) | 2017-04-07 |
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Legal Events
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