CN108688728B - Automotive body structure - Google Patents
Automotive body structure Download PDFInfo
- Publication number
- CN108688728B CN108688728B CN201710228805.5A CN201710228805A CN108688728B CN 108688728 B CN108688728 B CN 108688728B CN 201710228805 A CN201710228805 A CN 201710228805A CN 108688728 B CN108688728 B CN 108688728B
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- Prior art keywords
- transferring element
- width direction
- vehicle width
- load transferring
- underlying load
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/088—Details of structures as upper supports for springs or dampers
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The present invention provides a kind of automotive body structure, wherein, substantially certain vehicle width direction width (W) when underlying load transferring element (17) is with overlook view, and in the bending section (17c) for being formed in front-rear direction middle part by towards being bent in a manner of outstanding outside vehicle width direction, the groove portion (17d) vertically extended is formed in the vehicle width direction inner wall of the bending section (17c), and when side is observed, upper wall is flat and lower wall is bent in a manner of outstanding downward for the underlying load transferring element (17), accordingly, nearby there is maximum up and down direction height (H) at the bending section (17c), therefore, when head-on crash occurs for vehicle, lower part load transmitting components (17) are to bending on the outside of vehicle width direction, prevent underlying load transferring element (17) from contacting with road surface and raising fore sub frame (18), it accordingly, can ensure that the crush stroke that engine, speed changer retreat.
Description
Technical field
The present invention relates to a kind of automotive body structure, which is transmitted by pair of right and left underlying load
(under load path) component connects following and fore sub frame (the front sub of front baffle (front bulkhead)
Frame), wherein the pair of right and left underlying load transferring element has closed section and extends along the longitudinal direction.
Background technique
According to known to Japanese invention patent Publication special open 2012-153263: being passed by pair of right and left underlying load
The preceding pair for passing component (lower part interference rod unit 137) to connect the following of rectangular box-like front baffle He be configured at front baffle rear
The front end of vehicle frame, wherein the pair of right and left underlying load transferring element is the hollow rod-shape for being bent downwardly and having regulation section
Component, the impact load of the head-on crash (frontal crash) by inputting front baffle, before making underlying load transferring element
Rear direction middle part downward bending absorbs collision energy.
In addition, it is above-mentioned in the prior art, when the front-rear direction middle part of lower part load transmitting components bears head-on crash
Impact load and when downward bending, the lower end of the underlying load transferring element of bending contacts with road surface and jacks up upwards, accordingly, preceding
The front end of subframe can be elevated, and the engine and speed changer in front of the fore sub frame bear impact load and retreat
When, interference with the front end of fore sub frame and be difficult to ensure crush stroke (crush stroke), when may reduce collision
Energy absorption.
Summary of the invention
The purpose of one aspect of the present invention is, makes underlying load transferring element to vehicle width side when a frontal collision occurs
To foreign side's bending and ensure crush stroke.
According to an aspect of the present invention, it proposes a kind of automotive body structure, passes through the left and right extended along the longitudinal direction
A pair of of underlying load transferring element connects the following and fore sub frame of front baffle, wherein pair of right and left underlying load transfer part
Part has closed section, which is characterized in that
Substantially certain vehicle width direction width, is formed in front and back when the underlying load transferring element is with overlook view
To the bending section of middle part by towards being bent in a manner of outstanding outside vehicle width direction, the vehicle width direction inner wall in the bending section is formed with
The groove portion vertically extended, and when side is observed, upper wall is flat and lower wall is with downward for the underlying load transferring element
Mode outstanding is bent, and accordingly, has maximum up and down direction height near the bending section.
In in terms of the said one, a kind of automotive body structure is proposed, which is characterized in that the underlying load transferring element
Front end have the widened fastening part of vehicle width direction width locality, the fastening part is fastened by least one bolt
The front baffle it is following, wherein the bolt is configured in the kernel of section than the underlying load transferring element and more leans on vehicle
Wide direction inner side.
In addition, proposing a kind of automotive body structure in terms of the said one, which is characterized in that the underlying load passes
It passs component to be configured to, is combined by upper member and lower member and constitute closed section, wherein upper member is in unlimited downwards
U-shaped section, lower member is in the U-shaped section that is open upwards.
In addition, proposing a kind of automotive body structure, which is characterized in that in the pair of right and left in terms of the said one
There is the pair of right and left toe lateral vehicle frame (front side frame) configured along the longitudinal direction above underlying load transferring element,
To front-rear direction middle part bending, the toe lateral vehicle frame on the outside of vehicle width direction under the impact load effect of head-on crash
Break be nearby fastened onto front side fastening part, wherein the front side fastening part is by by towards shape in a manner of open outside vehicle width direction
The notch (slit) of fore sub frame described in Cheng Yu is constituted.
In addition, proposing a kind of automotive body structure, which is characterized in that front suspension (front in terms of the said one
Suspension the front and rear of lower arm (lower arm)) passes through front connector and rear adapter by pivot suspension respectively
In the fore sub frame, the rear end of the underlying load transferring element is in the front near joints, from front and the lower arm
Front be oppositely arranged.
In addition, proposing a kind of automotive body structure, which is characterized in that the toe lateral vehicle frame in terms of the said one
Rear upper surface with from front upper place backward the front panel lower member (dash panel lower) of inclined downward front surface connect
It connects, also, the rear side fastening part of the fore sub frame is fastened onto the rear lower surface of the toe lateral vehicle frame, in the rear side
Fastening part is nearby configured with the rear adapter.
In addition, proposing a kind of automotive body structure, which is characterized in that in the fore sub frame in terms of the said one
The rear adapter near, configured with for supporting stabilizer device (stabilizer) stabilizer support bracket and reinforcement part
Part.
In addition, in one embodiment, the 2nd break P2 corresponds to break of the invention.
The effect of invention
According to an aspect of the present invention, connected by the pair of right and left underlying load transferring element extended along the longitudinal direction
Connect the following and fore sub frame of front baffle, wherein pair of right and left underlying load transferring element has closed section.Underlying load passes
Substantially certain vehicle width direction width when passing component with overlook view is formed in the bending section of front-rear direction middle part with towards vehicle
Mode outstanding is bent outside wide direction, and the vehicle width direction inner wall in bending section is formed with the groove portion vertically extended, and
When side is observed, upper wall is flat and lower wall is bent in a manner of outstanding downward for underlying load transferring element, accordingly, in bending section
Nearby there is maximum up and down direction height, therefore, when head-on crash and impact load input front baffle occur for vehicle, lower part
Outside direction bending from load transmitting components to vehicle width direction without downward bending, it is therefore prevented that the underlying load of downward bending
Transferring element contacts with road surface and raises fore sub frame, it is ensured that the crush stroke that engine, speed changer retreat is to improve collision
The absorbent properties of energy.Also, since underlying load transferring element is in the maximum front-rear direction middle part bending of area of section, because
This, can be improved the energy absorption of the bending with underlying load transferring element.
In in terms of said one, the front end of underlying load transferring element has vehicle width direction width locality widened tight
Gu portion, fastening part is fastened onto the following of front baffle by least one bolt, wherein the bolt, which is configured in, compares underlying load
The kernel of section of transferring element more leans on vehicle width direction inner side, therefore, keeps the front end of underlying load transferring element flat next
Distractive load hereby it is possible to which generating plate is broken when preventing impact load from inputting, and makes underlying load by impact load generation
The torque that transferring element is rotated around bolt to vehicle width direction outside, thus it enables that underlying load transferring element is reliably to vehicle width
Bending on the outside of direction.
In addition, underlying load transferring element is configured to, and is combined by upper member and lower member in terms of said one
And constitute closed section, wherein upper member is in downward open U-shaped section, and lower member is in the U-shaped being open upwards
Therefore section can easily vary the height of the up and down direction of underlying load transferring element and the vehicle width direction of front end
Width.
In addition, having above pair of right and left underlying load transferring element and configuring along the longitudinal direction in terms of said one
Pair of right and left toe lateral vehicle frame, toe lateral vehicle frame, by the effect of the impact load of head-on crash on the outside of vehicle width direction
The break of the front-rear direction middle part of bending is nearby anchored on fore sub frame by front side fastening part, and the front side fastening part is from to vehicle
The notch that the open mode of the outside direction of wide direction is formed is constituted, therefore, when the input of the impact load of head-on crash, front
Side vehicle frame can be separated easily from fore sub frame, and to bending on the outside of vehicle width direction, to improve based on toe lateral vehicle frame
The energy absorption of bending.
In addition, the front and rear of the lower arm of front suspension passes through front connector respectively and rear portion connects in terms of said one
Head is pivotally supported on fore sub frame, and the rear end of underlying load transferring element is in front near joints, before front and lower arm
Portion is oppositely arranged, and therefore, impact load can be made to be transferred to from the underlying load transferring element of retrogressing when head-on crash occurs
Lower arm front is simultaneously absorbed, also, since in front near joints, the amount of moving up and down of lower arm is smaller, therefore, can be reliably
Impact load is transferred to lower arm from underlying load transferring element, and it is unrelated with the swing position of lower arm.
In addition, said one in terms of in, the rear upper surface of toe lateral vehicle frame with before front upper place backward inclined downward
The front surface of coaming plate lower member connects, also, the rear side fastening part of fore sub frame is fastened onto the rear portion following table of toe lateral vehicle frame
Face is configured with rear adapter near rear side fastening part, therefore, can by impact load act on make the intensity of fore sub frame compared with
Low part effectively deforms to absorb collision energy, wherein the lower part of the intensity of fore sub frame is higher by intensity
Fore sub frame rear side fastening part and the higher lower arm of intensity rear adapter clamping.
In addition, in terms of said one, near the rear adapter of fore sub frame, configured with for the steady of supporting stabilizer device
Determine device support bracket and strengthening part, therefore, making the rear adapter of fore sub frame is nearby local higher-strength, thus it enables that
The more low intensive part in part reliably deforms to ensure energy absorption.
Detailed description of the invention
Fig. 1 is the figure for indicating to look up the state of front portion of car body skeleton from left front lower section.
Fig. 2 is the direction view in 2 directions of Fig. 1.
Fig. 3 is the direction 3A of Fig. 2 and the direction view in the direction 3B.
Fig. 4 is along the 4A-4A line of Fig. 2, the cross-sectional view of 4B-4B line and 4C-4C line cutting.
Fig. 5 is the direction view in 5 directions of Fig. 1.
Fig. 6 is the cross-sectional view of the 6-6 line cutting along Fig. 5.
Fig. 7 is the cross-sectional view of the 7-7 line cutting along Fig. 1.
Fig. 8 is the cross-sectional view of the 8-8 line cutting along Fig. 3 (B).
Fig. 9 is the top view of toe lateral vehicle frame.
Description of symbols
11 ... front baffles；11b ... is following；12 ... toe lateral vehicle frames；14 ... front panel lower members；The transmitting of 17 ... underlying loads
Component；17a ... upper member；17b ... lower member；The bending section 17c ...；17d ... groove portion；18 ... fore sub frames；23 ... lower arms；
24 ... front connectors；25 ... rear adapters；28 ... bolts；35a ... notch；36 ... front sides fastening part；40 ... rear side fastening parts；
51 ... stabilizers；52 ... stabilizer support brackets；53 ... strengthening parts；L ... kernel of section；The 2nd break (break) of P2 ...；H…
Up and down direction height；W ... vehicle width direction width.
Specific embodiment
In the following, embodiments of the present invention will be described according to FIG. 1 to FIG. 9.In addition, the front and back in this specification
It to, left and right directions (vehicle width direction) and up and down direction is defined on the basis of the occupant for being sitting in driver's seat.
As depicted in figs. 1 and 2, it is configured with front baffle 11 in motor vehicle front structure, the front baffle 11 is by along vehicle width direction
The top 11a and following 11b of extension, with pair of right and left side 11c, 11c for vertically extending be combined into it is rectangular box-like and
It is formed.The rear portion of the pair of right and left toe lateral vehicle frame 12,12 extended along the longitudinal direction branches into two strands.The toe lateral vehicle frame 12,
12 branch portion 12a, 12a is connected to the front surface for the front panel lower member 14 holded up from the front end forward upward of bottom plate 13.Vehicle
Two thigh 12b, 12b on the inside of wide direction are connected to the front lower surface of bottom plate 13.Two thigh 12c, 12c on the outside of vehicle width direction
It is connected to the front of pair of right and left curb girder (side sill) 15,15.The branch portion 12a of left and right toe lateral vehicle frame 12,12,
12a is connected to the front end of left and right curb girder 15,15 by pair of right and left outrigger (outrigger) 16,16.In addition, before left and right
The front end of portion side vehicle frame 12,12 is connected to the up and down direction middle part of left and right side 11c, 11c of front baffle 11.
The front end of the pair of right and left underlying load transferring element 17,17 extended along the longitudinal direction is connected to front baffle 11
The vehicle width direction both ends of following 11b, rear end are connected to the vehicle width direction outer end of 18 front of plate fore sub frame, wherein preceding
Subframe 18 is supported on the lower surface of left and right toe lateral vehicle frame 12,12.Pair of right and left front pillar lower member (front pillar
Lower member) it 19,19 is holded up upwards from the front end of left and right curb girder 15,15, pair of right and left upper component 20,20 is from left and right
The upper end of a pair of of front pillar lower member 19,19 extends forwards.Pair of right and left lower member 21,21 is from left and right upper component 20,20
Front end forward downward extend, and the front end of pair of right and left lower member 21,21 is by pair of right and left connecting component 22,22,
It is connected to the vehicle width direction outer surface of toe lateral vehicle frame 12,12 fronts.At the vehicle width direction both ends of fore sub frame 18, front suspension
Pair of right and left lower arm 23,23 respectively by front connector 24,24 and rear adapter 25,25, in a manner of swinging freely up and down
It is supported.
As shown in Figure 1 to 4, underlying load transferring element 17 is combined by upper member 17a and lower member 17b
, bar-like member in hollow closed section, wherein upper member 17a open, Japanese katakana "U" font in lower surface
Section, lower member 17b open, Japanese katakana "U" shaped sections in upper surface (referring to Fig. 4).Lower part when side is observed
The upper surface of load transmitting components 17 is linearly, and lower surface is bent in downwardly convex mode, therefore, underlying load transfer part
The up and down direction height H of part 17 is smaller at both ends in the front-back direction, becomes larger in front-rear direction middle part (referring to Fig. 2).In addition,
The vehicle width direction width W of lower part load transmitting components 17 is substantially certain when overlook view, in front-rear direction middle part with to vehicle width
Mode outstanding is slight curving on the outside of direction, and the table in the vehicle width direction of the bending section 17c of underlying load transferring element 17
Face forms the groove portion 17d vertically extended (referring to Fig. 3).
In the front end of underlying load transferring element 17, part increases vehicle width direction width W and is formed in the up-down direction
Offset flat shape (referring to Fig. 3 and Fig. 4 (A)), in the inside of the offset flat shape part, be configured adjacently two cylinder rings in vehicle width direction
(collar)26,27.The kernel of section L that bolt 28 runs through the front end relative to underlying load transferring element 17 is located at vehicle width side
Cylinder ring 26 inwardly, and bolt 28 is fastened onto the vehicle width direction outer end of the following 11b of front baffle 11 by nut 29
Portion.Bolt 30, which runs through, is located at the cylinder ring 27 on the outside of vehicle width direction relative to kernel of section L, and bolt 30 passes through 31 quilt of nut
It is anchored on the lower end of the side 11c of front baffle 11.
As shown in Fig. 5~Fig. 8, fore sub frame 18 be by upper member 32, lower member 33 and front component 34 in conjunction with and
The hollow part of formation is vertically equipped with pair of right and left column sections 35,35 (referring to figure from the vehicle width direction both ends of fore sub frame 18
8).The upper end of each column sections 35 is provided with front side fastening part 36, which is anchored on front for fore sub frame 18
The lower surface of side vehicle frame 12 (referring to Fig. 2, Fig. 5, Fig. 6 and Fig. 8).Front side fastening part 36 is made of notch (slit) portion 35a, this is cut
Oral area 35a is formed as, and opens wide in the upper end of column sections 35 on the outside of vehicle width direction.It is inserted into the bolt 37 of notch 35a from below
It is fastened through bracket 38 by nut 39, wherein bracket 38 is fixed on the lower wall of the front-rear direction middle part of toe lateral vehicle frame 12.
As shown in figure 9, toe lateral vehicle frame 12 is from front to back, there is the 1st break P1, the 2nd break P2 and the 3rd break P3.When
When the impact load F input of head-on crash, toe lateral vehicle frame 12 is in the 1st break P1, the 3rd break P3 to rolling on the inside of vehicle width direction
It is curved, in the 2nd break P2 to bending on the outside of vehicle width direction.The front side fastening part 36 of fore sub frame 18 is fastened onto toe lateral vehicle
The 2nd break P2 of frame 12.
In addition, being provided with rear side fastening part 40, the rear side fastening part in the vehicle width direction outer end of the rear of fore sub frame 18
40 for being anchored on the rear lower surface of toe lateral vehicle frame 12 (referring to Fig.1 for the vehicle width direction outer end of the rear of fore sub frame 18
And Fig. 7).In rear side fastening part 40, cylinder is configured between the upper member 32 and lower member 33 of toe lateral vehicle frame 12
Ring 41.The bolt 42 being inserted into from below is through cylinder ring 41, the bracket 43 for the lower surface for being set to toe lateral vehicle frame 12, toe lateral
The strengthening part 44 of the lower wall of vehicle frame 12 and the inside for being set to toe lateral vehicle frame 12, is fastened by nut 45.At this point, reinforcing bearing
The rear end of item (reinforcing stay) 46 is connected to two thigh 12b on the inside of the vehicle width direction of toe lateral vehicle frame 12, wherein
The front end for reinforcing support strip 46 is fastened onto rear side fastening part 40 by the bolt 42.
In this way, fore sub frame 18 is supported on left and right toe lateral by front side fastening part 36,36 and rear side fastening part 40,40
The lower surface of vehicle frame 12,12 is respectively arranged with bracket 47 in the up-front vehicle width direction outer end of fore sub frame 18,47 shape of bracket
Become, is in open, Japanese katakana "U" shaped sections on the outside of vehicle width direction (referring to Fig. 3, Fig. 4 (C) and Fig. 8).Lower part
The rear end of load transmitting components 17 is embedded in the inside of bracket 47 on the outside of vehicle width direction.Two difference of bolts 49,49 are from below
Insertion and former and later two cylinder rings 48,48 and for running through the lower wall of bracket 47, the inside for being configured at underlying load transferring element 17
The upper wall of bracket 47 is fastened respectively to two nuts 50,50.
In this state, be fixed in the rear end of the underlying load transferring element 17 of bracket 47 from front and lower arm 23,
Leading edge near front connector 24 separates a little gap α and configures in opposite directions, wherein lower arm 23 is supported in the (ginseng of fore sub frame 18
According to Fig. 3 and Fig. 5).
In the upper surface at the vehicle width direction both ends of the upper member 32 of fore sub frame 18, it is fixed with and is filled for supporting suspension
The stabilizer support bracket 52 for the stabilizer 51 set, and upper member 32 and lower member 33 pass through with Japanese katakana
The strengthening part 53 of "U" shaped sections connects (referring to Fig. 8).These stabilizer support brackets 52 and strengthening part 53 are matched
It sets near the rear adapter 25 of fore sub frame 18.
Then, the embodiments of the present invention with above structure are illustrated.
When vehicle occur head-on crash and impact load F input front baffle 11 when, impact load F a part in the past every
The following 11b of plate 11 is transferred to left and right underlying load transferring element 17,17, and left and right underlying load transferring element 17,17 is existed
Front-rear direction compression.At this point, underlying load transferring element 17,17 is substantially without the downward bending due to impact load F, and lead
It will be to the outside direction bending of vehicle width direction (referring to the chain-dotted line of Fig. 3 (A)).This is because: when overlook view in the vehicle width direction
Underlying load transferring element 17,17 with substantially certain width W the bending section 17c for being formed in front-rear direction middle part,
17c is bent in such a way that the foreign side to vehicle width direction is outstanding, and in bending section, the vehicle width direction inner wall of 17c, 17c are formed with along upper
Groove portion 17d, 17d that lower direction extends, and the upper wall when side is observed of underlying load transferring element 17,17 is flat and lower wall with
Mode outstanding is bent downward, accordingly, has height (thickness) H of maximum up and down direction near bending section 17c, 17c.
As a result, preventing the underlying load transferring element 17,17 of downward bending from contacting with road surface and raising fore sub frame 18.
Therefore, avoid the engine and speed changer (not shown) that are configured in engine room due to impact load F exerts a force and when retreating with
18 interference of fore sub frame raised.It is additionally ensured that the crush stroke (crush stroke) that engine, speed changer can retreat
And improve crash energy absorption performance.Also, since underlying load transferring element 17,17 is in the maximum front-rear direction of area of section
Therefore middle part bending can be improved the energy absorption of the bending with underlying load transferring element 17,17.
In addition, the front end of underlying load transferring element 17,17 has the widened fastening of vehicle width direction width W locality
Portion, the fastening part pass through two bolts 28,30 respectively and are fastened onto front baffle 11, wherein two bolts 28,30 are configured in down
The vehicle width direction two sides of the kernel of section L of portion's load transmitting components 17,17 (referring to Fig. 3 and Fig. 4 (A)).Therefore, underlying load passes
Pass component 17,17 front end be in the up-down direction it is flat come distractive load, hereby it is possible to prevent impact load F input when
Generating plate fracture, and by impact load F generation make bolt 28 of the underlying load transferring element 17 on the inside of vehicle width direction to
The torque M (referring to Fig. 3) rotated on the outside of vehicle width direction, thus it enables that underlying load transferring element 17 is reliably to vehicle width direction
Outside bending.
And underlying load transferring element 17 is combined by upper member 17a and lower member 17b and constitutes closed section
(referring to Fig. 4), therefore, can easily vary the height H of the up and down direction of underlying load transferring element 17 and the vehicle of front end
The width W of wide direction, wherein upper member 17a is in downward open, Japanese katakana "U" shaped sections, lower member 17b
In be open upwards, Japanese katakana "U" shaped sections.
In addition, when head-on crash and impact load F input front baffle 11 occur for vehicle, another portion of impact load F
Divide from side 11c, 11c of front baffle 11 and be passed to left and right toe lateral vehicle frame 12,12, passes through impact load F and act on, front
Side vehicle frame 12,12 is in the 1st~the 3rd break P1, P1, P3 to vehicle width direction bending (referring to Fig. 9 (B)).Toe lateral vehicle frame 12,12 in
When collision near the 2nd break P2 of bending on the outside of vehicle width direction, notch 35a is fastened by bolt 37, wherein notch
Portion 35a is opened wide in 35 upper end of column sections of fore sub frame 18 on the outside of vehicle width direction, and therefore, bolt 37 is on being located at column sections 35
End, slide into open notch 35a on the outside of vehicle width direction, accordingly, toe lateral vehicle frame 12 from fore sub frame 18 reliably
It separates (white arrow referring to figure 5 and figure 6).As a result, toe lateral vehicle frame 12 can not be interfered by fore sub frame 18 and is crushed,
To absorb collision energy.
In addition, the front and rear of the lower arm 23 of front suspension passes through 25 pivot suspension of front connector 24 and rear adapter respectively
In fore sub frame 18, the rear end of underlying load transferring element 17 is opposite from front and the front of lower arm 23 near front connector 24
Setting, therefore, can be transferred to lower arm from the underlying load transferring element 17 of retrogressing for impact load F when head-on crash occurs
23 front is simultaneously absorbed.Also, since near front connector 24, the amount of moving up and down swung along with lower arm 23 is smaller,
Therefore, impact load F reliably can be transferred to lower arm 23 from underlying load transferring element 17, and the swing position with lower arm 23
It sets unrelated.
In addition, the rear upper surface of toe lateral vehicle frame 12 is connected to the front surface of front panel lower member 14, also, preceding pair
The rear side fastening part 40 of vehicle frame 18 is fastened onto the rear lower surface of toe lateral vehicle frame 12, and it is tight that rear adapter 25 is configured in rear side
Gu near portion 40, therefore, can be acted on by impact load F becomes the lower part of intensity of fore sub frame 18 effectively
Shape absorbs collision energy, wherein the lower part of the intensity of fore sub frame 18 is by the rear side of the higher fore sub frame 18 of intensity
The clamping of the rear adapter 25 of fastening part 40 and the higher lower arm 23 of intensity.
In addition, near the rear adapter 25 of fore sub frame 18, the stabilizer support bracket configured with supporting stabilizer device 51
52 and strengthening part 53, therefore, making the rear adapter 25 of fore sub frame 18 is nearby local higher-strength, and thus, it is possible to by touching
Hitting load F deforms the part of relatively low strength reliably to ensure energy absorption.
Embodiments of the present invention are explained above, but the present invention can also carry out respectively in the range of not departing from its main idea
Kind design alteration.
Claims (8)
1. a kind of automotive body structure is connected by pair of right and left underlying load transferring element (17) under front baffle (11)
Side (11b) and fore sub frame (18), wherein the pair of right and left underlying load transferring element (17) has closed section, and edge
Front-rear direction extends,
It is characterized in that,
Substantially certain vehicle width direction width (W) when the underlying load transferring element (17) is with overlook view, and formed
In the bending section (17c) of front-rear direction middle part by towards being bent in a manner of outstanding outside vehicle width direction, and at the bending section (17c)
Vehicle width direction inner wall be formed with the groove portion (17d) vertically extended, also, when side is observed, the underlying load
The upper wall of transferring element (17) is flat, and lower wall is bent in a manner of outstanding downward, and accordingly, in the bending section, (17c) nearby has
There is maximum up and down direction height (H).
2. automotive body structure according to claim 1, which is characterized in that
The front end of the underlying load transferring element (17) has the widened fastening part of vehicle width direction width (W) locality, institute
It states following (11b) that fastening part is fastened onto the front baffle (11) by two bolts (28,30), wherein two spiral shells
Bolt (28,30) is configured in the vehicle width direction two sides of the kernel of section (L) of the underlying load transferring element (17).
3. automotive body structure according to claim 1 or 2, which is characterized in that
The underlying load transferring element (17) is combined to be configured and be closed by upper member (17a) and lower member (17b)
Close section, wherein the upper member (17a) is in downward open U-shaped section, and the lower member (17b) is in spacious upwards
The U-shaped section opened.
4. automotive body structure according to claim 1 or 2, which is characterized in that
There is the pair of right and left front configured along the longitudinal direction in the top of the pair of right and left underlying load transferring element (17)
Side vehicle frame (12), to bending, the toe lateral vehicle frame (12) on the outside of vehicle width direction under the impact load effect of head-on crash
Front-rear direction middle part break (P2) nearby be fastened onto front side fastening part (36), front side fastening part (36) the You Yixiang vehicle
Open mode is formed in the composition of the notch (35a) on the fore sub frame (18) outside wide direction.
5. automotive body structure according to claim 4, which is characterized in that
The front and rear of the lower arm (23) of front suspension passes through front connector (24) and rear adapter (25) by pivot suspension respectively
In the fore sub frame (18), the rear end of the underlying load transferring element (17) the past near the front connector (24)
The square front with the lower arm (23) is oppositely arranged.
6. automotive body structure according to claim 5, which is characterized in that
The rear upper surface of the toe lateral vehicle frame (12) with from the front upper place front panel lower member (14) of inclined downward backward
Front surface connection, also, the rear side fastening part (40) of the fore sub frame (18) is fastened onto the toe lateral vehicle frame (12)
Lower surface afterwards, and the rear adapter (25) are configured near the rear side fastening part (40).
7. automotive body structure according to claim 5, which is characterized in that
Configured with the stabilization for supporting stabilizer device (51) near the rear adapter (25) of the fore sub frame (18)
Device support bracket (52) and strengthening part (53).
8. automotive body structure according to claim 6, which is characterized in that
Configured with the stabilization for supporting stabilizer device (51) near the rear adapter (25) of the fore sub frame (18)
Device support bracket (52) and strengthening part (53).
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| JP2008195206A (en) * | 2007-02-13 | 2008-08-28 | Honda Motor Co Ltd | Vehicle body front part structure of vehicle |
| BR112016012888B1 (en) * | 2013-12-13 | 2023-01-24 | F-Tech Inc. | VEHICLE SUBFRAME |
| KR101786657B1 (en) * | 2013-12-17 | 2017-10-18 | 현대자동차주식회사 | Structure for connecting front vehicle body |
| JP6522981B2 (en) * | 2015-02-18 | 2019-05-29 | 本田技研工業株式会社 | Front body structure |
| JP6421723B2 (en) * | 2015-08-18 | 2018-11-14 | トヨタ自動車株式会社 | Vehicle front structure |
| JP6226932B2 (en) * | 2015-09-29 | 2017-11-08 | 本田技研工業株式会社 | Body front structure |
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