CN106988849B - Vehicle exhaust system supporting structure - Google Patents
Vehicle exhaust system supporting structure Download PDFInfo
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- CN106988849B CN106988849B CN201710018390.9A CN201710018390A CN106988849B CN 106988849 B CN106988849 B CN 106988849B CN 201710018390 A CN201710018390 A CN 201710018390A CN 106988849 B CN106988849 B CN 106988849B
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- Prior art keywords
- vertical
- floor
- exhaust system
- closed cross
- section
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Classifications
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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
Abstract
The present invention provides a kind of vehicle exhaust system supporting structure, the vehicle exhaust system supporting structure has: supporting the support rod (4) of exhaust system and the mounting bracket (5) for support rod (4) to be installed on to body bottom, body bottom has floor and is incorporated into the closed cross-section frame for being formed together the 1st closed cross-section (S1) on the downside of floor with floor, mounting bracket (5) has what the downside from closed cross-section frame (8) to vertical direction extended, vertical (11) of the 2nd closed cross-section S2 are formed in the lower section of the 1st closed cross-section (S1), support rod (4) has: vertical stick portion (6), it extends along the vertical face (11a) for being formed in vertical (4) to vertical direction, it is combined by weld part and vertical face (11a)；It is horizontally extending to support exhaust system from the lower end of vertical stick portion (6) with horizon bar portion (7).Hereby it is possible to improve the durability of the weld part for engaging support rod and mounting bracket.
Description
Technical field
The present invention relates to a kind of vehicle exhaust system supporting structures.
Background technique
The exhaust systems such as exhaust pipe, muffler (silencer) are installed on the downside of body bottom.
In addition, using rodlike support rod all the time in order to which such a exhaust system is installed on body bottom.
The support rod is horizontally extending, and through the connecting piece with the appearance face bonding of exhaust pipe etc. to support exhaust
Pipe etc..
In following patent documents, in order to which support rod is installed on body bottom, provided with the plate extended along vertical direction
The bracket for mounting of shape.
In addition, being formed with perforative hole portion in the horizontal direction on bracket for mounting, the base end side of support rod is inserted into the hole
In portion.
Moreover, the Zhou Duanyuan and support rod of hole portion weld together, support rod and mounting bracket are engaged by weld part
Together.
Existing technical literature
Patent document
Patent document 1: Japanese invention patent authorization bulletin speciallys permit No. 4403839
But in above-mentioned exhaust system supporting structure, when support rod is vertically vibrated because of the vibration of exhaust pipe etc.,
Its stress is easy to concentrate on the Zhou Duanyuan of hole portion, it is possible to weld part can be made to go wrong.
Summary of the invention
Therefore, the present invention is to be completed in view of above-mentioned background, and it is an object of the present invention to provide a kind of vehicle exhaust system bearing knot
Structure can be improved the durability vehicle of the weld part for engaging support rod and mounting bracket.
As the method for solving the above subject, vehicle exhaust system supporting structure according to the present invention has: bearing row
The support rod of gas system and mounting bracket for the support rod to be installed on to body bottom, the body bottom have: ground
Plate (floor panel)；It with closed cross-section frame, is incorporated on the downside of the floor, and the 1st envelope is collectively formed with the floor
Closing cross section, the mounting bracket have vertical, and described vertical extends from the closed cross-section frame to vertical direction downside
And the 2nd closed cross-section is formed in the lower section of the 1st closed cross-section, the support rod has: vertical stick portion, and edge is formed in institute
State vertical it is vertical extend towards vertical direction, and pass through weld part and the vertical face bonding；With horizon bar portion, from institute
The lower end for stating vertical stick portion is horizontally extending to support the exhaust system.
According to the present invention, since the vertical stick portion of support rod is along the vertical face bonding of mounting bracket, support rod it is upper
Lower section upward load (vibration) not can be concentrated in a part in vertical face, but integrally disperse to vertical face, in other words, with
The mode dispersed to vertical direction applies.Therefore, it can be improved the durability of weld part.
In addition, extend due to vertical from closed cross-section frame on the downside of vertical direction, when having in up and down direction
When load (vibration) is applied to vertical face (vertical), the vertical closing with high stiffness by constituting the 1st closed cross-section
Section frame bearing.Therefore, vertical vibration frequency improves.
In addition, rigidly being further increased since vertical forms the 2nd closed cross-section, and vibration frequency further mentions
It is high.
In conclusion vertical is not easy to generate resonance with the lower exhaust system of vibration frequency.
In the present invention, it is preferred to which the mounting bracket has in generally L-shaped the 1st and in the generally L-shaped the 2nd
Piece, described 1st has: described vertical, end is engaged in the closed cross-section frame thereon；And flange piece, from described
Vertical lower end is horizontally extending, and described 2nd has: horizontal plate, horizontally extending, and one end and institute
State flange chip bonding；And extension sheet, it is extended downward from one end of the horizontal plate, and the vertical face is extended to down
Side.
According to above structure, due to extending vertical face by extension sheet, the load being applied in the up and down direction in vertical face
Lotus (vibration) further disperses to vertical direction.Therefore, the durability of weld part can be further enhanced.
In addition, being obtained if can be supported near vibration source i.e. exhaust system using extension sheet to the bearing strength of support rod
To improve.Therefore, it is improved from support rod to the vibration frequency that vertical and extension sheet are transmitted, vertical and extension sheet are less
It is easy to generate resonance with exhaust system.
In addition, in the present invention, it is preferred in the two sides for being set to described vertical with the vertical face of the extension sheet
The oriented support rod side a pair of of protruding portion outstanding is formed, the vertical face is the slot being formed between the pair of protruding portion
Face.
According to above structure, vertical face becomes groove face, and therefore, the engagement in the vertical face and support rod realized by welding becomes
It obtains securely, vertical for constituting vertical face and the rigidity of extension sheet are improved.Therefore, the vibration frequency of vertical and extension sheet
It is improved, it is not easy to generate resonance with exhaust system.
In the present invention, it is preferred to which the floor has preceding floor and rear floor, the rear floor has: overlapping portion, with
The upper surface of the rear end on the preceding floor, which is overlapped, to be combined；1st longitudinal wall part extends upwards from the rear end of the overlapping portion；
With the 1st horizontal walls, rearward extend from the upper edge of the 1st longitudinal wall part, the closed cross-section frame is intermediate frame
Crossbeam, the intermediate frame crossbeam have: the 2nd longitudinal wall part is extended downward from the lower surface of the 1st horizontal walls；With
2nd horizontal walls extend forwards from the lower end of the 2nd longitudinal wall part, by the 1st longitudinal wall part, the 1st horizontal wall
Portion, the 2nd longitudinal wall part and the 2nd horizontal walls form the 1st closed cross-section, the vertical upper end with it is described
The engagement of 2nd longitudinal wall part is provided with Extendible flake in the vertical side, and the Extendible flake is under the 2nd horizontal walls
Surface extends and engages with the 2nd horizontal walls, after the other end of the horizontal plate is to be clamped in the preceding floor
Combinations of states between end and the overlapping portion on the rear floor.
According to above structure, when there is the load (vibration) in up and down direction to be applied to vertical face, mainly by with vertical
Upper end engagement the 2nd longitudinal wall part and extension engagement the 2nd horizontal walls bearing.
Therefore, mounting bracket is not easy to vibrate along the vertical direction.
In addition, the other end due to horizontal plate has combined, when the load for having horizontal direction or centered on vertical direction
When lotus is applied to vertical face, supported by horizontal plate by preceding floor etc..Therefore, mounting bracket be not easy to vibrate in the horizontal direction or
It is to be rotated centered on vertical direction.
In the present invention, it is preferred to curb girder (the side of each end and left and right in the vehicle width direction of the intermediate frame crossbeam
Sill it) combines, the intermediate frame crossbeam has clamping engaging portion, and the clamping engaging portion is from the front end of the 2nd horizontal walls
Extend and be clamped in the rear end on the preceding floor and it is described after floor overlapping portion between combinations of states, in the folder
It holds and is provided with notch in a part of engaging portion, the other end of the horizontal plate passes through the notch and is held in the preceding ground
Between the rear end of plate and the overlapping portion on the rear floor.
According to above structure, the other end of horizontal plate can be incorporated between preceding floor and rear floor.In addition, due to being formed
The crest line in the corner between the 2nd horizontal walls and the 2nd longitudinal wall part does not have notch, therefore, will not reduce intermediate frame crossbeam
Intensity in vehicle width direction.Moreover, can be realized the lightweight of vehicle by notch.
In the present invention, it is preferred to be formed with horizontal plate protruding portion on the horizontal plate, the horizontal plate protruding portion is to described
The direction that horizontal plate extends extends and is formed with opposing projections in the extension sheet, which is the pair of prominent
Position between portion out, prominent to the opposite side in the vertical face, the horizontal plate protruding portion and the opposing projections connect
It is continuous.
According to above structure, the tension and compressive strength of horizontal plate are improved, and mounting bracket is more not easy along level
Direction vibration.
In the present invention, it is preferred to be formed with upper end tab in the vertical upper end, the upper end is prominent
The lower side in portion is divided into two parts, continuous with each protruding portion in the pair of protruding portion respectively.
According to above structure, tension and compressive strength in vertical vertical direction (up and down direction) are improved, peace
Dress bracket is more not easy to vibrate along the vertical direction.
In the present invention, it is preferred to it is also equipped with the rear end support rod of the rear end for supporting the exhaust system, it is described
Rear end support rod is installed on the end plate of rear side, extends to vehicle width direction outside.
According to above structure, since rear end support rod is supported by end plate with a higher rigidity, exhaust system is not easy to vibrate.
In addition, since rear end support rod extends from the end plate of rear side on the outside of vehicle width direction, the row supported
Gas system is located at rearward position on the outside of overall width direction.Therefore, the vibration (noise) of exhaust system is not easy to transmit to car.
[invention effect]
According to the present invention, it is possible to provide a kind of vehicle exhaust system supporting structure, can be improved for engage support rod and
The durability vehicle of the weld part of mounting bracket.
Detailed description of the invention
Fig. 1 is bottom view when observing from below the rear portion side of the body bottom of embodiment.
Fig. 2 be observe from the rear front side exhaust system bearing part when perspective view.
Fig. 3 is by the amplified amplification stereogram of front side exhaust system bearing part shown in Fig. 2.
Fig. 4 is cross-sectional view made of IV-IV arrow line cutting along Fig. 1.
Fig. 5 is cross-sectional view made of V-V arrow line cutting along Fig. 4.
Fig. 6 is cross-sectional view made of VI-VI arrow line cutting along Fig. 4.
Fig. 7 is cross-sectional view made of VII-VII arrow line cutting along Fig. 2.
Fig. 8 is the perspective view in front mounting bracket from lower left side.
Perspective view when Fig. 9 is the main muffler on the right side of rear is from upper right side.
Description of symbols
1: exhaust system supporting structure；4: support rod (4A:L font bar 4B: rear end support rod)；5: mounting bracket；6:
Vertical stick portion；7: horizon bar portion；9: end plate；10: the 1；11: vertical；12: flange piece；13: Extendible flake；14: vertical face；
15: the 1 protruding portions (protruding portion)；16: upper end tab；20: the 2；21: horizontal plate；22: extension sheet；23: the 2 is prominent
Portion's (protruding portion)；24: extending vertical face；26: horizontal plate protruding portion；50: body bottom；51: preceding floor (floor)；52: afterwards
Plate (floor)；60: intermediate frame crossbeam (8: closed cross-section frame)；62: the 2 longitudinal wall parts；63: the 2 horizontal walls；65: clamping
Engaging portion；70: exhaust system；71: exhaust pipe；L1: crest line；S1: the 1 closed cross-section；S2: the 2 closed cross-section；S3: notch.
Specific embodiment
In the following, being carried out referring to attached drawing to the vehicle for being applicable in vehicle exhaust system supporting structure involved in embodiment
Explanation
In the following description, so-called " vertical direction " refers to the up and down direction of vehicle, cannot although saying on its stricti jurise
It is fully equivalent to the up and down direction of the vehicle, but also comprising being considered as the side for being equal to up and down direction from the viewpoint of function and effect
To.
In addition, so-called " horizontal direction " refers to the vertical direction of the up and down direction perpendicular to vehicle, although its stricti jurise
On say and cannot be fully equivalent to the vertical direction, but be also equal to vertical direction comprising being considered as from the viewpoint of function and effect
Direction.
Firstly, being illustrated to the exhaust system 70 for being equipped on vehicle.
(exhaust system 70)
Fig. 1 is bottom view when observing from below the rear portion side of body bottom 50.
As shown in Figure 1, exhaust system 70 has: exhaust manifold (exhaust manifold is not shown), and it is not shown
Engine each cylinder (cylinder) connection, for collecting exhaust gas；Exhaust pipe 71 is used to make to collect using exhaust manifold
Exhaust gas to rear of vehicle flow out；Catalytic exhaust-gas converter (not shown), using catalysis reaction by exhaust gas it is harmful at
Divide and removes；And secondary muffler 72 and main muffler 73, for reducing the noise generated by exhaust gas.
Exhaust pipe 71 is elongated member made of linking multiple tubular parts (exhaust pipe).
Although not shown, but the front of exhaust pipe 71 is configured in engine room, the front end of exhaust pipe 71 and exhaust discrimination
Pipe connection.
As shown in Figure 1, the middle part 71a and rear portion 71b of exhaust pipe 71 are configured at the downside of body bottom 50.
The middle part 71a of exhaust pipe 71 is installed in the vehicle width direction of body bottom 50 by exhaust system supporting structure 1
Centre portion (referring to Fig. 2).In addition, being provided with secondary muffler 72 in the middle part 71a of exhaust pipe 71.
The rear portion 71b of exhaust pipe 71 is provided with main muffler 73 in each rear end to fork on the outside of vehicle width direction.
In addition, each main muffler 73 is installed on the outside of the vehicle width direction of body bottom 50 by exhaust system supporting structure 1
(referring to Fig. 9).
Moreover, being rearward extended the rear end 71c for having exhaust pipe 71 from the rear surface of main muffler 73.
(exhaust system supporting structure 1)
As shown in Fig. 2, Fig. 9, exhaust system supporting structure 1 has: front side exhaust system bearing part 2 is used to support
The middle part (the middle part 71a of exhaust pipe 71) of exhaust system 70；And rear side exhaust system bearing part 3, it is used to support
The rear end (main muffler 73) of exhaust system 70.
The front side exhaust system bearing part 2 and rear side exhaust system bearing part 3 are supported using rodlike support rod 4
Exhaust system 70.
Herein, such as Fig. 2, shown in Fig. 3, support rod 4 and indirect bearing exhaust system 70 (exhaust pipe 71), but pass through branch
It holds and is set to the supported portion part 80 of the outer peripheral surface of exhaust system 70 to support exhaust system 70 indirectly.
In addition, supported portion part 80 has: flange 81 is set to the outer peripheral surface of exhaust pipe 71；A pair of of tube stay 82, one
End is combined with flange 81；And linking part 83, link with the other end of a pair of of tube stay 82,82.
In addition, by support rod 4 through linking part 83 to support linking part 83, so that exhaust system 70 (exhaust pipe 71) In
Body bottom 50 is installed in overhang.
In the following, being illustrated to the basic structure of front side exhaust system bearing part 2.
(front side exhaust system bearing part 2)
Front side exhaust system bearing part 2 has: support rod 4 is used to support exhaust pipe 71 (exhaust system 70)；And
Mounting bracket 5 is used to support rod 4 being installed on body bottom 50.
In addition, as shown in figure 4, the floor (preceding floor 51 and rear floor 52) of body bottom 50 connects with closed cross-section frame 8
It closes.In addition, floor and closed cross-section frame 8 form the 1st closed cross-section S1.
Mounting bracket 5 is engaged in 50 downside of body bottom, forms the 2nd closed cross-section S2 in the lower section of the 1st closed cross-section S1.
In addition, mounting bracket 5 has vertical 11, this vertical 11 from closed cross-section frame 8 to vertical direction, downside is prolonged
It stretches and constitutes the 2nd closed cross-section S2.
Support rod 4 is the L-shaped bar 4A in L-shaped.
L-shaped bar 4A has: vertical stick portion 6, and the vertical face 14 along the rear surface 11a for being formed in vertical 11 is vertical
Extend on direction (up and down direction), is engaged by weld part (not shown) with vertical face 14；And horizon bar portion 7, from vertical
The lower end in stick portion 6 extends to horizontal direction (front) to support linking part 83 (exhaust system 70).
Though in addition, not there is special diagram, weld part is to melt after-hardening by welding (MIG weldering) by metal material to form,
It is formed in vertical direction (up and down direction) along vertical stick portion 6 and vertical face 14 multiple.
According to the structure of above-mentioned front side exhaust system bearing part 2, when the vibration due to exhaust pipe 71 makes L-shaped bar 4A
When vertically vibrating, the vertical stick portion 6 that the load (vibration) in up and down direction is applied to L-shaped bar 4A is engaged vertical
Face 14.
Herein, extend due to vertical face 14 along vertical direction, the load (vibration) in up and down direction not can be concentrated in vertical
The a part in face 14, but it is dispersed to entire vertical face 14, in other words, disperse to apply along vertical direction.Therefore, it can be improved weldering
The durability of socket part.
In addition, the load (vibration) in up and down direction is applied to vertical face 14 and makes vertical 11 vertically to shake
When dynamic, vertical 11 is supported by closed cross-section frame 8 with a higher rigidity.Therefore, vertical 11 vibration frequency is improved.
Moreover, because vertical 11 the 2nd closed cross-section S2 of composition, thus vertical 11 itself intensity it is higher, vertical
11 vibration frequency is further enhanced.
In conclusion being difficult to for vertical 11 generate resonance with the lower exhaust system 70 of vibration frequency.
In the following, to specific structure (body bottom 50, L-shaped bar 4A, mounting bracket of front side exhaust system bearing part 2
5) it is described in detail.
(body bottom 50)
As shown in Figure 1, body bottom 50 has: preceding floor 51 constitutes the bottom wall in compartment；Floor 52 afterwards are configured at
The rear on preceding floor 51, constitutes the bottom wall of luggage compartment；Left and right curb girder 53, preceding floor 51 left and right each end along front and back
Direction extends；Left and right Floor-board frame 54, than left and right curb girder 53 closer to the position on the inside of vehicle width direction along the longitudinal direction
Extend；Intermediate frame crossbeam 60, is extended along the width of the car, and each end is combined with the curb girder 53 of left and right；And the rear side of left and right
Frame 55 rearward extends from each end in the vehicle width direction of intermediate frame cross 60.
Front side exhaust system bearing part 2 is vehicle width direction central portion relative to body bottom 50, is set to and is configured with
The boundary on the preceding floor 51 of intermediate frame crossbeam 60 and rear floor 52.
(rear floor 52)
As shown in figure 4, rear floor 52 has: overlapping portion 52a, it is Chong Die with the upper surface of rear end 51a on preceding floor 51
In conjunction with；1st longitudinal wall part 52b extends upwards from the rear end of overlapping portion 52a；And the 1st horizontal walls 52c, it is vertical from the 1st
The upper edge of wall portion 52b rearward extends.
Therefore, boundary of the lower surface of body bottom 50 on preceding floor 51 and rear floor 52 is formed with step, and rear side
(rear floor 52) is higher than front side (preceding floor 51).
(intermediate frame crossbeam 60)
Intermediate frame crossbeam 60 is above-mentioned closed cross-section frame 8.
As shown in figure 4, intermediate frame crossbeam 60 has: upper side engagement portion 61, the 1st horizontal walls with rear floor 52
The following table face bonding of 52c；2nd longitudinal wall part 62, from the front end (lower surface of the 1st horizontal walls 52c) of upper side engagement portion 61 to
Lower section extends；2nd horizontal walls 63 extend forwards from the lower end of the 2nd longitudinal wall part 62；Lower side engagement portion 64, from the 2nd water
The front end of flat wall portion 63 extends downward；And clamping engaging portion 65 (referring to Fig. 2, Fig. 3, Fig. 7), with the 2nd horizontal walls 63
And the end of lower side engagement portion 64 is continuous.
In addition, forming institute by the 1st longitudinal wall part 52b, the 1st horizontal walls 52c, the 2nd longitudinal wall part 62 and the 2nd horizontal walls 63
State the 1st closed cross-section S1.
As shown in Fig. 2, being formed with and prolonging along vehicle width direction in the corner being made of the 2nd horizontal walls 63 and the 2nd longitudinal wall part 62
The crest line L1 stretched.
In addition, 53 knot of curb girder of each end and left and right in the vehicle width direction of the 2nd longitudinal wall part 62 and the 2nd horizontal walls 63
It closes, crest line L1 extends to the curb girder 53 of left and right (referring to the dotted line L1 ' of Fig. 2).Therefore for the collision of side, intermediate frame is horizontal
Beam 60 has enough intensity.
In addition, each end in the vehicle width direction of the 2nd horizontal walls 63 is formed as flat condition, the central portion of vehicle width direction to
Top is recessed.
Lower side engagement portion 64 be extended downward from the vehicle width direction central portion of the 2nd horizontal walls 63 and with clamping engaging portion
The continuous wall portion in 65 rear end, observe from the rear when in generally trapezoidal.
In addition, 1st longitudinal wall part 52b of the lower side engagement portion 64 along rear floor 52 extends, pass through welding and the 1st longitudinal wall part 52b
Engagement (referring to Fig. 4).
As shown in Figure 2 and Figure 3, the front end for clamping each end and the 2nd horizontal walls 63 in the vehicle width direction of engaging portion 65 connects
Continuous, vehicle width direction central portion and the lower end of lower side engagement portion 64 are continuous.
As shown in fig. 7, clamping engaging portion 65 is held in the rear end 51a on preceding floor 51 and the overlapping portion on rear floor 52
Between 52a, and combined by welding with preceding floor 51 and rear floor 52.
As shown in Figure 2 and Figure 3, it is provided with notch S3 on clamping engaging portion 65, for exposing preceding floor 51 and rear floor 52
Bound fraction.
Near the central portion of notch S3 in the vehicle width direction, it is formed in and is provided with front side exhaust system bearing part 2
Position.
Therefore, as shown in figure 4, before a part (aftermentioned horizontal plate 21) of mounting bracket 5 can be made to clamp and be incorporated in
Between floor 51 and rear floor 52.
In addition, as shown in figure 3, notch S3 is also formed in the lower end side of lower side engagement portion 64, preceding floor 51 and rear floor 52
Bound fraction can reliably from notch S3 expose.
In addition, notch S3 is only formed on clamping engaging portion 65 and lower side engagement portion 64, and do not formed at crest line L1.
Therefore, the intensity in the vehicle width direction of intermediate frame crossbeam 60 will not be reduced, and can be realized the lightweight of vehicle.
(L-shaped bar 4A)
As shown in figure 4, L-shaped bar 4A is bent by columned metal parts.Horizon bar portion 7 have small diameter portion 7a and
Anti-delinking part 7b.
Small diameter portion 7a is the position for supporting linking part 83, and shape is smaller than the diameter at other positions at diameter.According to
The structure of small diameter portion 7a, each ora terminalis before and after small diameter portion 7a are formed with step, and linking part 83 is locked to step and is difficult to
Dislocation, exhaust pipe 71 are difficult to vibrate.
Anti-delinking part 7b is the large-diameter portion being set to than small diameter portion 7a closer to the position of end side (front end side).Accordingly, energy
Enough prevent linking part 83 from falling off from horizon bar portion 7.
(mounting bracket 5)
In component generally L-shaped when mounting bracket 5 is from the side.
One end of mounting bracket 5 is engaged with intermediate frame crossbeam 60, and its other end and floor (preceding floor 51 and afterwards
Plate 52) engagement, thus constitute the 2nd closed cross-section S2.
Mounting bracket 5 has: the 1st 10, forming one side of above-mentioned L-shaped；And the 2nd 20, form above-mentioned L word
The another side of shape.
1st 10 and the 2nd 20 be respectively from the side when in sheet metal generally L-shaped, formed by punch process.
Hereinafter, the 1st 10 and the 2nd 20 are described in detail.
(the 1st 10)
Have for 1st 10: above-mentioned vertical 11, from the 2nd longitudinal wall part 62 of intermediate frame cross 60 to vertical direction
Downside extends；Flange piece 12 extends from vertical 11 lower end to horizontal direction and forwards；And a pair of of Extendible flake 13,
It extends from vertical 11 side to the lower surface of the 2nd horizontal walls 63 respectively.
Above-mentioned vertical face 14 is formed in the up and down direction middle part of vertical 11 rear surface 11a, the vertical face 14
It is engaged with the vertical stick portion 6 of L-shaped bar 4A.
As shown in figure 3, being formed with a pair of 1st protruding portion 15, the 1st protruding portion 15 of a pair in the left and right sides in vertical face 14
It is prominent to vertical 6 side of stick portion.
Therefore, vertical face 14 is formed between a pair of 1st protruding portion 15, is concave groove face, vertical thus, it is possible to reinforce
The engagement that face 14 and vertical stick portion 6 are realized by welding (MIG weldering).It is obtained in this way, constituting the rigid of vertical 11 of vertical face 14
To raising, vertical 11 vibration frequency is improved.
As shown in Figure 4, Figure 5, the 2nd longitudinal wall part that vertical 11 upper end 11b passes through welding and intermediate frame crossbeam 60
62 rear surface engagement.
It is formed with upper end tab 16 in the vehicle width direction central portion of vertical 11 upper end 11b, the upper end is prominent
16 side rearward surface 11a of portion is prominent out.
As shown in figure 3, the lower side of upper end tab 16 is divided into two parts, respectively and in a pair of 1st protruding portion 15
Each 1st protruding portion 15 is continuous.
Accordingly, when there is the load (vibration) in up and down direction to be applied to the part between upper end 11b and vertical face 14, i.e.
When vertical face 14, the tension and compressive strength for the part that the stress in up and down direction is acted on are improved.Therefore, vertical 11
Vibration frequency be improved.
As shown in figure 4, a pair of of Extendible flake 13 prolongs vertical 11 both sides from up and down direction middle part to front side top
It stretches.Moreover, forming the joint flange 13a extended on the outside of oriented vehicle width direction, the joint flange in the upper end of a pair of of Extendible flake 13
The following table face bonding of 13a and the 2nd horizontal walls 63.
Accordingly, when there is the load (vibration) in up and down direction to be applied to vertical face 14, in addition to vertical 11 upper end
Except 2nd longitudinal wall part 62 of the intermediate frame crossbeam 60 that 11b is engaged, there are also the 2nd horizontal walls that a pair of of Extendible flake 13 is engaged
Portion 63 is supported.Therefore, vertical 11 vibration frequency is improved.
(the 2nd 20)
Have for 2nd 20: horizontal plate 21, horizontally extending, rear end 21a (one end) is convex with the 1st 10
Embolium 12 combines；And extension sheet 22, it is extended downward from the rear end (one end) of horizontal plate 21.
In addition, the front end 21b (the other end) of horizontal plate 21 be held in preceding floor 51 rear end 51a and rear floor
It is combined between 52 overlapping portion 52a.
Accordingly, horizontal plate 21 with vertical 11, the 1st longitudinal wall part 52b on rear floor 52 and intermediate frame crossbeam 60 the 2nd
Horizontal walls 63 form the 2nd closed cross-section S2.
Moreover, vertical 11 passes through water when having horizontal direction or being applied to vertical face 14 around the load of vertical direction
Plain film 21 is supported by the bound fraction on preceding floor 51 and rear floor 52.Therefore, even if there is horizontal direction or centered on plumb line
Direction on load be applied to vertical face 14, be also not easy to vibrate in the horizontal direction for vertical 11 or with vertical direction be
Heart rotation.Moreover, the front end 21b of horizontal plate 21 is held in by passing through the above-mentioned notch S3 of intermediate frame crossbeam 60
Between preceding floor 51 and rear floor 52.
As shown in figure 8, the vehicle width direction central portion in horizontal plate 21 is formed with horizontal plate protruding portion 26 recessed upwards.
The horizontal plate protruding portion 26 extends along the longitudinal direction, and the tension and compressive strength on the front-rear direction of horizontal plate 21 are improved.
Moreover, being formed with and horizontal plate protruding portion on the 1st 10 flange piece 12 for being engaged in the top of horizontal plate 21
26 corresponding recess portion 12a (referring to Fig. 6).
As shown in figure 4, extension sheet 22 has for extending the junction in the vertical stick portion 6 with L-shaped bar 4A downwards
There is the vertical face 24 of extension for engaging with vertical stick portion 6.Accordingly, by L-shaped bar 4A apply load, in addition to vertical face 14 it
Outside, it is also applied to and extends vertical face 24, the load (vibration) in up and down direction is dispersed.Therefore, the durability of weld part obtains
It further increases.
In addition, being extended the position of the bearing of piece 22 is the vertical face 14 than vertical 11 closer to the position of lower section, it is located at
Near vibration source, that is, exhaust pipe 71.Therefore, it is improved for supporting the bearing strength of L-shaped bar 4A, is passed from L-shaped bar 4A
The vibration frequency for being handed to vertical 11 and extension sheet 22 is improved.
As shown in figure 3, being formed with a pair of 2nd protruding portion 23 rearward outstanding in extension sheet 22.
It is formed between a pair of 2nd protruding portion 23 (rear surfaces of opposing projections 25), is formed moreover, extending vertical face 24
For concave groove face.Therefore, extend vertical face 24 and strengthened with vertical stick portion 6 by the engagement that welding (MIG weldering) is realized, prolonged
The vibration frequency of lengthy motion picture 22 is further enhanced.
In addition, as shown in figure 8, the front surface in extension sheet 22 is formed with forwards between a pair of 2nd protruding portion 23
Opposing projections 25 relatively outstanding.
The opposing projections 25 and horizontal plate protruding portion 26 are continuous, and the tension and compressive strength of horizontal plate 21 obtain further
It improves.
In the following, being illustrated to rear side exhaust system bearing part 3.
As shown in figure 9, rear side exhaust system bearing part 3 has rear end support rod 4B, rear end support rod 4B is used
The main muffler 73 of the rear end side of exhaust system 70 is set in bearing.
Rear end support rod 4B is supported on the end plate 9 engaged with the rear end of rear side 55.
Rear end support rod 4B has: base end part 40 is supported on end plate 9, extends to vehicle width direction outside；Lower section extends
Stick portion 41 extends downward on the outside of the vehicle width direction of base end part 40；And front extension 42, extend stick portion from below
41 lower end forwards horizontal extension to support linking part 83.
Moreover, the upper end on the outside of the vehicle width direction of end plate 9 is formed with supporting part 9a, supporting part 9a is added by bending
Work is substantially U-shaped, is supported with rear end support rod 4B in supporting part 9a.
According to the structure of above rear side exhaust system bearing part 3, due to rear end support rod 4B be supported on rigidity compared with
High end plate 9, therefore main muffler 73 can be made to be not easy to vibrate.
In addition, the main muffler 73 for being supported on rear end support rod 4B is located on the outside of overall width direction close to the rear end of vehicle
The position in portion.Therefore, the vibration (noise) of main muffler 73 is not easy to transmit to car, it can be ensured that quiet property.
More than, embodiment is illustrated, but the present invention is not limited thereto.
Vertical 11 of mounting bracket 5 in embodiment is combined with intermediate frame crossbeam 60 but it is also possible to be for example setting
It is placed in the frame of the closed cross-section of formation rear cross beam of body bottom 50 etc..
In addition, in embodiments, the front end 21b of the horizontal plate 21 of mounting bracket 5 is held in preceding floor 51 with after
It is combined between floor 52, but as long as being capable of fixing the front end 21b of horizontal plate 21, other fixing means can also be used.
Claims (6)
1. a kind of vehicle exhaust system supporting structure, which is characterized in that have:
The support rod of exhaust system and the mounting bracket for the support rod to be installed on to body bottom are supported,
The body bottom has floor and closed cross-section frame, wherein and the closed cross-section frame is incorporated on the downside of the floor,
And it is formed together the 1st closed cross-section with the floor,
The mounting bracket has vertical, this vertical extends and from the closed cross-section frame to vertical direction downside in institute
The lower section for stating the 1st closed cross-section forms the 2nd closed cross-section,
The support rod has:
Vertical stick portion, along be formed in described vertical it is vertical extend towards vertical direction, and pass through weld part and the lead
Face engagement directly；With
Horizon bar portion, the lower end from the vertical stick portion is horizontally extending to support the exhaust system,
The mounting bracket has in generally L-shaped the 1st and in generally L-shaped the 2nd,
Described 1st includes
Described vertical, end is engaged in the closed cross-section frame thereon；With
Flange piece, it is horizontally extending from the vertical lower end,
Described 2nd includes
Horizontal plate, it is horizontally extending, and one end and the flange chip bonding；With
Extension sheet is extended downward from one end of the horizontal plate, and make it is described it is vertical extend downwards,
It is prominent that the oriented support rod side is formed in the two sides in the vertical face for being set to described vertical and the extension sheet
A pair of of protruding portion,
The vertical face is the groove face being formed between the pair of protruding portion,
The floor has preceding floor and rear floor,
Floor has after described:
Overlapping portion, it is Chong Die with the upper surface of rear end on the preceding floor to combine；
1st longitudinal wall part extends upwards from the rear end of the overlapping portion；With
1st horizontal walls rearward extend from the upper edge of the 1st longitudinal wall part,
The closed cross-section frame is intermediate frame crossbeam,
The intermediate frame crossbeam has:
2nd longitudinal wall part is extended downward from the lower surface of the 1st horizontal walls；With
2nd horizontal walls extend forwards from the lower end of the 2nd longitudinal wall part,
The described 1st is formed by the 1st longitudinal wall part, the 1st horizontal walls, the 2nd longitudinal wall part and the 2nd horizontal walls
Closed cross-section,
The vertical upper end is engaged with the 2nd longitudinal wall part,
The vertical side is provided with Extendible flake, the Extendible flake to the lower surface of the 2nd horizontal walls extend and with
The 2nd horizontal walls engagement,
The other end of the horizontal plate is to be clamped between the rear end on the preceding floor and the overlapping portion on the rear floor
State be combined.
2. vehicle exhaust system supporting structure according to claim 1, which is characterized in that
Each end in the vehicle width direction of the intermediate frame crossbeam in conjunction with the curb girder of left and right,
The intermediate frame crossbeam has clamping engaging portion, which extends from the front end of the 2nd horizontal walls
Come and be clamped in the rear end on the preceding floor and it is described after floor overlapping portion between combinations of states,
It is provided with notch in a part of the clamping engaging portion,
The other end of the horizontal plate by the notch be held in the preceding floor rear end and it is described after floor
Overlapping portion between.
3. vehicle exhaust system supporting structure according to claim 2, which is characterized in that
Horizontal plate protruding portion is formed on the horizontal plate, which prolongs to the direction that the horizontal plate extends
It stretches,
Be formed with opposing projections in the extension sheet, the opposing projections between the pair of protruding portion and to institute
It is prominent to state vertical face opposite side,
The horizontal plate protruding portion and the opposing projections are continuous.
4. vehicle exhaust system supporting structure according to claim 2, which is characterized in that
It is formed with upper end tab in the vertical upper end,
The lower side of the upper end tab be divided into two parts come it is continuous with each protruding portion in the pair of protruding portion respectively.
5. vehicle exhaust system supporting structure according to claim 3, which is characterized in that
It is formed with upper end tab in the vertical upper end,
The lower side of the upper end tab be divided into two parts come it is continuous with each protruding portion in the pair of protruding portion respectively.
6. vehicle exhaust system supporting structure according to any one of claims 1 to 5, which is characterized in that
It is also equipped with the rear end support rod of the rear end for supporting the exhaust system,
The rear end support rod is installed in the end plate of rear side, and extends to vehicle width direction outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016009368A JP6650766B2 (en) | 2016-01-21 | 2016-01-21 | Exhaust system support structure for vehicles |
| JP2016-009368 | 2016-01-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988849A CN106988849A (en) | 2017-07-28 |
| CN106988849B true CN106988849B (en) | 2019-11-05 |
Family
ID=59395996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018390.9A Active CN106988849B (en) | 2016-01-21 | 2017-01-10 | Vehicle exhaust system supporting structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6650766B2 (en) |
| CN (1) | CN106988849B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7000143B2 (en) * | 2017-12-18 | 2022-01-19 | トヨタ自動車株式会社 | Support structure for exhaust system parts |
| JP6557916B2 (en) * | 2017-12-20 | 2019-08-14 | 本田技研工業株式会社 | Bumper for vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225220U (en) * | 1985-07-31 | 1987-02-16 | ||
| JP2005280377A (en) * | 2004-03-26 | 2005-10-13 | Calsonic Kansei Corp | Support structure for exhaust system member |
| CN202863122U (en) * | 2012-08-31 | 2013-04-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Mobile muffler hanging hook component |
| CN203186085U (en) * | 2013-04-10 | 2013-09-11 | 奇瑞汽车股份有限公司 | Mounting structure of automobile exhaust pipe lifting hook |
| CN104228555A (en) * | 2013-06-21 | 2014-12-24 | 上汽通用五菱汽车股份有限公司 | Hook structure for mounting silencer suspension |
-
2016
- 2016-01-21 JP JP2016009368A patent/JP6650766B2/en not_active Expired - Fee Related
-
2017
- 2017-01-10 CN CN201710018390.9A patent/CN106988849B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225220U (en) * | 1985-07-31 | 1987-02-16 | ||
| JP2005280377A (en) * | 2004-03-26 | 2005-10-13 | Calsonic Kansei Corp | Support structure for exhaust system member |
| CN202863122U (en) * | 2012-08-31 | 2013-04-10 | 浙江吉利汽车研究院有限公司杭州分公司 | Mobile muffler hanging hook component |
| CN203186085U (en) * | 2013-04-10 | 2013-09-11 | 奇瑞汽车股份有限公司 | Mounting structure of automobile exhaust pipe lifting hook |
| CN104228555A (en) * | 2013-06-21 | 2014-12-24 | 上汽通用五菱汽车股份有限公司 | Hook structure for mounting silencer suspension |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106988849A (en) | 2017-07-28 |
| JP2017128240A (en) | 2017-07-27 |
| JP6650766B2 (en) | 2020-02-19 |
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