CN105501311A - Rear part energy absorbing structure of vehicle body - Google Patents

Rear part energy absorbing structure of vehicle body Download PDF

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Publication number
CN105501311A
CN105501311A CN201511034085.6A CN201511034085A CN105501311A CN 105501311 A CN105501311 A CN 105501311A CN 201511034085 A CN201511034085 A CN 201511034085A CN 105501311 A CN105501311 A CN 105501311A
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CN
China
Prior art keywords
plate
panel
threshold
floor
flange
Prior art date
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Granted
Application number
CN201511034085.6A
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Chinese (zh)
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CN105501311B (en
Inventor
吴纯福
沈龙
耿富荣
薛军
叶宝文
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Guangzhou Automobile Group Co Ltd
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Guangzhou Automobile Group Co Ltd
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Application filed by Guangzhou Automobile Group Co Ltd filed Critical Guangzhou Automobile Group Co Ltd
Priority to CN201511034085.6A priority Critical patent/CN105501311B/en
Publication of CN105501311A publication Critical patent/CN105501311A/en
Application granted granted Critical
Publication of CN105501311B publication Critical patent/CN105501311B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20Floors or bottom sub-units
    • B62D25/2054Load carrying floors for commercial vehicles

Abstract

A rear part energy absorbing structure of a vehicle body comprises longitudinal beams, a threshold arranged outside the longitudinal beams and floors connected with the longitudinal beams and the threshold; the longitudinal beams comprise a front longitudinal beam and a rear longitudinal beam; the floors comprise a front floor and a rear floor; the threshold comprises a threshold lower support plate and a rear threshold guide rail mounting plate; the rear part energy absorbing structure of the vehicle body further successively comprises a rear threshold inner plate rear connecting plate, a towing arm inside support and a rear threshold inner plate sealing plate, which form a cavity structure together with the rear threshold lower support plate, the rear threshold guide rail mounting plate, the rear floor and the rear longitudinal beam. The rear part energy absorbing structure of the vehicle body is reasonable in arrangement, forms a systematic energy absorbing structure and can effectively transmit and disperse various loads from inside and outside a vehicle.

Description

Body tail endergonic structure
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of body tail endergonic structure.
Background technology
MPV automobile (Multi-PurposeVehicles, multipurpose automobile) is the automobile integrating the roomy occupant space of este wagon, the traveling comfort of car and the function of box-body truck.MPV automobile is generally two van-type structures, compartment, front side is machinery space, rear side compartment is occupant space and luggage space, the seat of a lower 5-8 people can be arranged in rear side compartment, seat configuration generally adopts two to drain into three rows, flexible arrangement, can all fold or fall, some all around can also move and even rotate, and this makes it in inner structure, have very large alerting ability.
The rear portion of MPV automobile comprises rear floor assembly, back door threshold assembly, rear wheel cover assembly etc., carry in the lump from the various load outside Che Nei and car (such as from the stress of rear suspension by above-mentioned each assembly is mutually collaborative, the impact force etc. that side collision process produces), body tail endergonic structure comprises from rear floor assembly, the parts of back door threshold assembly and rear wheel cover assembly and the attaching parts etc. be connected between the components, body tail endergonic structure is the main pipeline of various impact energy and stress, the STRESS VARIATION of body tail is complicated, therefore arranging of body tail endergonic structure reasonablely determines the transmission of auto body can and disperses various load, and then determine safety and the service life of automobile.
Summary of the invention
The object of the invention is to, provide a kind of body tail endergonic structure, its vibrational power flow is reasonable, forms systematic endergonic structure, can effectively transmit and disperse the various load inside and outside from car.
It is adopt following technical scheme to realize that the present invention solves its technical matters.
A kind of body tail endergonic structure, the floor comprising longeron, be arranged on the threshold outside longeron and be connected with threshold with longeron, longeron comprises front side member and floor side member, floor comprises front floor and rear floor, threshold comprises back door threshold lower supporting plate and back door threshold guide rails assembling plate, body tail endergonic structure also comprise successively be connected back door threshold inner panel after connecting panel, towing arm medial cradle and back door threshold inner panel shrouding; The cavity body structure formed between connecting panel, towing arm medial cradle and back door threshold inner panel shrouding and back door threshold lower supporting plate, back door threshold guide rails assembling plate, rear floor, floor side member after back door threshold inner panel.
In present pre-ferred embodiments, above-mentioned threshold also comprises front door sill inner panel and back door threshold inner panel, and body tail endergonic structure also comprises threshold stay bearing plate, and threshold stay bearing plate connects front door sill inner panel, back door threshold inner panel, front floor and front side member and forms cavity body structure.
In present pre-ferred embodiments, above-mentioned threshold stay bearing plate comprises support baseboard, the first support side plate and the second support side plate, and the first support side plate and the second support side plate are oppositely arranged, and support baseboard connects the first support side plate and the second support side plate; Support baseboard has the first support flange and second and supports flange, and first supports flanging welded to front door sill inner panel and back door threshold inner panel, and second supports flanging welded to front side member; First support side plate has the 3rd and supports flange, and the 3rd supports flange is respectively welded to front door sill inner panel, front floor and front side member; Second support side plate has the 4th and supports flange, and the 4th supports flange is respectively welded to back door threshold inner panel, front floor and front side member, and the welding edges of back door threshold guide rails assembling plate is in described second support side plate.
In present pre-ferred embodiments, the support baseboard of above-mentioned threshold stay bearing plate has and dodges through hole.
In present pre-ferred embodiments, after above-mentioned back door threshold inner panel, connecting panel comprises connecting bottom board, the first connecting lateral plate and the second connecting lateral plate, and the first connecting lateral plate and the second connecting lateral plate are oppositely arranged, and connecting bottom board connects the first connecting lateral plate and the second connecting lateral plate; Connecting bottom board has the first connection flange and is connected flange with second, and first connects flanging welded to floor side member, and second connects flanging welded to back door threshold lower supporting plate; First connecting lateral plate has the 3rd and connects flange, and the 3rd connects flange is respectively welded to back door threshold lower supporting plate, back door threshold guide rails assembling plate, rear floor and floor side member; Second connecting lateral plate has the 4th and connects flange, and the 4th connects flange is respectively welded to back door threshold lower supporting plate and back door threshold guide rails assembling plate.
In present pre-ferred embodiments, above-mentioned towing arm medial cradle comprises connected installation portion and connecting portion, and installation portion comprises adapter plate, the first installation side plate be oppositely arranged and the second installation side plate, and adapter plate arches upward towards the direction away from rear floor; Connecting portion connects first and installs side plate and the second installation side plate; Second installs side plate has the first support flange, first support flanging welded is to floor side member, adapter plate has the second support flange and the 3rd support flange, the second connecting lateral plate of connecting panel after the second support flanging welded to back door threshold inner panel, and the 3rd support flanging welded is to back door threshold inner panel shrouding; Connecting portion has the 4th support flange, and the 4th support flange is respectively welded to back door threshold guide rails assembling plate and back door threshold inner panel shrouding; Adapter plate is provided with the first attachment point for installing towing arm, and back door threshold lower supporting plate is provided with the second attachment point for installing towing arm near the position of towing arm medial cradle.
In present pre-ferred embodiments, above-mentioned back door threshold inner panel shrouding comprises connected first end and the second end, first end is connected to floor side member away from the edge of the second end by the first shrouding flange, the second end is connected to back door threshold lower supporting plate away from the edge of first end by the second shrouding flange, and first end and the second end pass through the 3rd shrouding flanging welded to rear floor near side, rear floor; The second end away from side, rear floor by the 4th shrouding flanging welded to back door threshold guide rails assembling plate, by the 5th shrouding flanging welded to back door threshold lower supporting plate.
In present pre-ferred embodiments, above-mentioned body tail endergonic structure also comprises shock absorber mounting board, shock absorber mounting board is used for arranging threaded line pipe, floor side member comprise successively be connected the first longeron side plate, longeron base plate and the second longeron side plate, first longeron side plate and the second longeron side plate are oppositely arranged and form groove with longeron base plate, and shock absorber mounting board is arranged in groove; Shock absorber mounting board and the first longeron side plate, longeron base plate and the second longeron side plate form cavity body structure.
In present pre-ferred embodiments, above-mentioned shock absorber mounting board passes through the first bumper flanging welded to the first longeron side plate near the edge of the first longeron side plate; Shock absorber mounting board passes through the second bumper flanging welded to the second longeron side plate near the edge of the second longeron side plate; Shock absorber mounting board comprises installs top board, the first side wall and the second sidewall, and the first side wall and the second sidewall are oppositely arranged, and installs top board and connects the first side wall and the second sidewall; The first side wall passes through the 3rd bumper flanging welded to longeron base plate away from the edge installing top board, and the second sidewall passes through the 4th bumper flanging welded to longeron base plate away from the edge installing top board; Install top board and have installation portion, installation portion has the deep-slotted chip breaker of opening towards longeron base plate, and threaded line pipe to be fixed between the first longeron side plate and the second longeron side plate and to be positioned at the deep-slotted chip breaker of installation portion.
In present pre-ferred embodiments, above-mentioned installation portion is provided with multiple spaced access hole.
The invention has the beneficial effects as follows: the floor that MPV automobile comprises longeron, is arranged on the threshold outside longeron and is connected with threshold with longeron, longeron comprises front side member and floor side member, floor comprises front floor and rear floor, threshold comprises back door threshold lower supporting plate and back door threshold guide rails assembling plate, body tail endergonic structure also comprise successively be connected back door threshold inner panel after connecting panel, towing arm medial cradle and back door threshold inner panel shrouding, after back door threshold inner panel, connecting panel, towing arm medial cradle and back door threshold inner panel shrouding are positioned at the front end of automotive C column bottom, rear wheel cover; The cavity body structure formed between connecting panel, towing arm medial cradle and back door threshold inner panel shrouding and back door threshold lower supporting plate, back door threshold guide rails assembling plate, rear floor, floor side member after back door threshold inner panel, towing arm is arranged between towing arm medial cradle and back door threshold lower supporting plate, stress from towing arm is passed to floor side member by towing arm medial cradle, is passed on back door threshold assembly (back door threshold lower supporting plate and back door threshold inner panel) by back door threshold lower supporting plate, this cavity body structure is reliably solid, improves the stability of towing arm.Have again, after back door threshold inner panel, connecting panel, Rear drag arm medial cradle, back door threshold inner panel shrouding are welded into a general frame structure floor side member, rear floor, back door threshold guide rails assembling plate, back door threshold lower supporting plate, the impulsive force brought from threshold during side impact is also delivered to floor side member by connecting panel, Rear drag arm medial cradle and back door threshold inner panel shrouding after back door threshold inner panel and the crossbeam that is connected with floor side member, improves the collision performance of vehicle body side impact.
Further, body tail endergonic structure also comprises threshold stay bearing plate, threshold stay bearing plate connects front door sill inner panel, back door threshold inner panel, front floor, back door threshold guide rails assembling plate and front side member and forms cavity body structure, threshold stay bearing plate aligns with automobile B-column, side connects front door sill inner panel and back door threshold inner panel 12, opposite side connects front side member, car body is when side is collided, a part absorbs energy by threshold stay bearing plate, remainder energy transferring, to front side member, effectively improves the collision performance of B columnar region.Between front door sill inner panel and back door threshold inner panel, there is welded joint, the welded joint between front door sill inner panel and back door threshold inner panel is encased with threshold stay bearing plate, add the local stiffness in welded joint region, at automobile when there is side impact with biased touching, front door sill inner panel can also avoid the bending in welded joint region to be out of shape.
Further, body tail endergonic structure also comprises shock absorber mounting board, shock absorber mounting board is arranged on the first longeron side plate of floor side member, longeron base plate and the second longeron side plate to be formed in groove and with the first longeron side plate, longeron base plate and the second longeron side plate form cavity body structure, shock absorber mounting board is used for mounting shock absorber, when vehicle operating, car body can cause producing very large stress between bumper and shock absorber mounting points at the impulsive force that different operating mode produces, make the part deformation of shock absorber mounting points, weld ftractures, shock absorber mounting board of the present invention is in fall in groove that " U " character form structure is arranged on floor side member and to form cavity body structure with floor side member, vehicle width direction is played a supporting role to floor side member, improve the local stiffness of floor side member, floor side member and shock absorber mounting board is prevented to be subject to the impulsive force from bumper and to produce distortion.
Arranging rationally of body tail endergonic structure of the present invention, forms systematic endergonic structure, can effectively transmit and disperse the various load inside and outside from car.Improve the rigidity of the threshold of body tail and wheel arch area, mode and NVH performance.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent to allow above-mentioned body tail endergonic structure of the present invention and other objects, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail.
Accompanying drawing explanation
Fig. 1 is the part-structure schematic diagram of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 2 is the structural representation of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 3 is the structural representation at another visual angle of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 4 is the structural representation of the threshold stay bearing plate of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 5 is the structural representation of connecting panel after the back door threshold inner panel of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 6 is the structural representation of the towing arm medial cradle of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 7 is the structural representation of the back door threshold inner panel shrouding of the body tail endergonic structure of preferred embodiment of the present invention.
Fig. 8 is the structural representation that the damping adapter plate of the body tail endergonic structure of preferred embodiment of the present invention is arranged on floor side member.
Fig. 9 a is that the damping adapter plate of the body tail endergonic structure of preferred embodiment of the present invention is arranged on structural representation.
Fig. 9 b is the structural representation at another visual angle of Fig. 9 a.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to the detailed description of the invention of body tail endergonic structure proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
Aforementioned and other technology contents, Characteristic for the present invention, can know and present in the detailed description of following cooperation with reference to graphic preferred embodiment.By the explanation of detailed description of the invention, when can to the present invention for the technological means reaching predetermined object and take and effect be able to more deeply and concrete understanding, however institute's accompanying drawings be only to provide with reference to and the use of explanation, be not used for being limited the present invention.
The supporting construction that the body frame structure for automotive of MPV automobile is generally formed by multiple longitudinal and cross beam, body frame structure for automotive is the structure carrier of whole automobile, for supporting, connecting each assembly (as rear floor assembly, back door threshold assembly, rear wheel cover assembly etc.) of automobile, make the position that each assembly keeps relatively correct, and bear the various load of automobile interior exterior.Body tail endergonic structure by from each assembly parts and connect attaching parts etc. between the components and form, be the main pipeline of various impact energy and stress.
Fig. 1 is the part-structure schematic diagram of the body tail endergonic structure of preferred embodiment of the present invention, Fig. 2 is the structural representation of the body tail endergonic structure of preferred embodiment of the present invention, Fig. 3 is the structural representation at another visual angle of the body tail endergonic structure of preferred embodiment of the present invention, see also Fig. 1, Fig. 2 and Fig. 3, body tail endergonic structure of the present invention is applicable to being arranged at MPV automobile, comprises longeron 110, threshold 120 and floor 130.The quantity of longeron 110 is two and interval is arranged, and every root longeron 110 all extends along bodywork length direction, and centre is connected by many crossbeams 210, illustrates below for a wherein longeron 110 and the parts that are connected with this longeron 110.Longeron 110 comprises connected front side member 111 and floor side member 112.Threshold 120 is arranged on the outside of longeron 110, and threshold 120 is the vitals in car body, has important effect for the structural strength of car load, rigidity and collision performance; Threshold 120 generally comprises front door sill inner panel 121, back door threshold inner panel 122, back door threshold lower supporting plate 123 and back door threshold guide rails assembling plate 140 etc.Floor 130 extends and is connected with threshold 120 with longeron 110 in the scope of longeron 110 with crossbeam 210 place, forms cavity body structure between floor 130 and longeron 110.In the present embodiment, floor 130 comprises connected front floor 131 and rear floor 132.Wherein, back door threshold inner panel 122 is arranged between back door threshold lower supporting plate 123 and rear floor 123, and back door threshold guide rails assembling plate 140 is arranged between back door threshold inner panel 122 and rear floor 132.
Body tail endergonic structure also comprises connecting panel 160, towing arm medial cradle 170 and back door threshold inner panel shrouding 180 after threshold stay bearing plate 150, back door threshold inner panel.After back door threshold inner panel connecting panel 160, towing arm medial cradle 170 and back door threshold inner panel shrouding 180 be connected successively and and back door threshold lower supporting plate 123, back door threshold guide rails assembling plate 140, rear floor 132, the cavity body structure that formed between floor side member 112.Wherein, threshold stay bearing plate 150 connects front door sill inner panel 121, back door threshold inner panel 122, front floor 131, back door threshold guide rails assembling plate 140 and front side member 111.After back door threshold inner panel, connecting panel 160 connects back door threshold lower supporting plate 123, back door threshold guide rails assembling plate 140, floor side member 112, rear floor 132 and towing arm medial cradle 170.Towing arm medial cradle 170 connects connecting panel 160, back door threshold guide rails assembling plate 140, floor side member 112 and back door threshold inner panel shrouding 180 after back door threshold inner panel.Back door threshold inner panel shrouding 180 connects towing arm medial cradle 170, back door threshold lower supporting plate 123, back door threshold guide rails assembling plate 140, floor side member 112 and rear floor 132.
Fig. 4 is the structural representation of the threshold stay bearing plate of the body tail endergonic structure of preferred embodiment of the present invention, see also Fig. 1 and Fig. 4, threshold stay bearing plate 150 is positioned at immediately below automobile B-column, and threshold stay bearing plate 150 connects front door sill inner panel 121, back door threshold inner panel 122, front floor 131 and front side member 111 and forms cavity body structure.Particularly, threshold stay bearing plate 150 comprises support baseboard 151, first support side plate 152 and the second support side plate 153, first support side plate 152 and the second support side plate 153 are oppositely arranged, and support baseboard 151 connects the first support side plate 152 and the second support side plate 153.Support baseboard 151 has the first support flange 151a and second and supports flange 151b, and the first support flange 151a is soldered to front door sill inner panel 121 and back door threshold inner panel 122, second support flange 151b is soldered to front side member 111.First support side plate 152 has the 3rd and supports flange 152a, and the 3rd supports flange 152a is respectively welded to front door sill inner panel 121, front floor 131 and front side member 111.Second support side plate 153 has the 4th and supports flange 153a, and the 4th supports flange 153a is respectively welded to back door threshold inner panel 122, front floor 131 and front side member 111.A cavity body structure is surrounded by between the first support side plate 152, support baseboard 151, second support side plate 153 and front door sill inner panel 121, back door threshold inner panel 122, front floor 131, front side member 111.The welding edges of back door threshold guide rails assembling plate 140 is in the second support side plate 152.
In the present embodiment, the support baseboard 151 of threshold stay bearing plate 150 has and dodges through hole 155, dodge through hole 155 1 aspect for loss of weight, on the other hand when installing body tail endergonic structure because threshold stay bearing plate 150 first welds with back door threshold, entering of welding gun is used for again afterwards, the problem cannot stamped with the solder joint solving threshold stay bearing plate 150 by dodging through hole 155 when welding with front floor 131 during threshold stay bearing plate 150.
Threshold stay bearing plate 150 aligns with automobile B-column, side connects front door sill inner panel 121 and back door threshold inner panel 12, opposite side connects front side member 111, car body is when side is collided, a part absorbs energy by threshold stay bearing plate 150, remainder energy transferring, to front side member 111, effectively improves the collision performance of B columnar region.There is between front door sill inner panel 121 and back door threshold inner panel 122 welded joint 124, the welded joint 124 between front door sill inner panel 121 and back door threshold inner panel 122 is encased with threshold stay bearing plate 150, add the local stiffness in welded joint 124 region, at automobile when there is side impact with biased touching, front door sill inner panel 121 can also avoid the bending in welded joint 124 region to be out of shape.
Fig. 5 is the structural representation of connecting panel after the back door threshold inner panel of the body tail endergonic structure of preferred embodiment of the present invention, see also Fig. 1 and Fig. 5, after back door threshold inner panel, connecting panel 160 comprises connecting bottom board 161, first connecting lateral plate 162 and the second connecting lateral plate 163, first connecting lateral plate 162 and the second connecting lateral plate 163 are oppositely arranged, and connecting bottom board 161 connects the first connecting lateral plate 162 and the second connecting lateral plate 163.Connecting bottom board 161 has the first connection flange 161a and is connected flange 161b with second, and first connects flange 161a is soldered to floor side member 112, and second connects flange 161b is soldered to back door threshold lower supporting plate 123.First connecting lateral plate 162 has the 3rd and connects flange 162a, and the 3rd connects flange 162a is respectively welded to back door threshold lower supporting plate 123, back door threshold guide rails assembling plate 140, rear floor 132 and floor side member 112.Second connecting lateral plate 163 has the 4th and connects flange 163a, and the 4th connects flange 163a is respectively welded to back door threshold lower supporting plate 123 and back door threshold guide rails assembling plate 140.
Fig. 6 is the structural representation of the towing arm medial cradle of the body tail endergonic structure of preferred embodiment of the present invention, sees also Fig. 1 and Fig. 6, and towing arm medial cradle 170 to be arranged on after back door threshold inner panel between connecting panel 160 and back door threshold inner panel shrouding 180.Towing arm medial cradle 170 comprises connected installation portion 171 and connecting portion 173, the first installation side plate 1712 and the second installation side plate 1713 that installation portion 171 comprises adapter plate 1711, is oppositely arranged, adapter plate 1711 arches upward towards away from direction, rear floor 132, connecting portion 173 connects the first installation side plate 1712 and second and installs side plate 1713, and the distance between connecting portion 173 and rear floor 132 is less than the distance between adapter plate 1711 and rear floor 132.Second installs side plate 1713 has the first support flange 171a, and the first support flange 171a is soldered to floor side member 112; Adapter plate 1711 has the second support flange 171b and the 3rd support flange 171c, and after the second support flange 171b is soldered to back door threshold inner panel, the second connecting lateral plate the 163, three support flange 171c of connecting panel 160 is soldered to back door threshold inner panel shrouding 180; Connecting portion 173 has the 4th support flange 173a, and the 4th support flange 173a is respectively welded to back door threshold guide rails assembling plate 140 and back door threshold inner panel shrouding 180.Wherein, the fixed end of towing arm (not shown) is arranged on and surrounds in groove by installation portion 171, connecting portion 173 and back door threshold guide rails assembling plate 140, the adapter plate 1711 of installation portion 171 is provided with the first attachment point 201 for installing towing arm, back door threshold lower supporting plate 123 is provided with the second attachment point 202 for installing towing arm near the position of towing arm medial cradle 170, towing arm is arranged on the first attachment point 201 and the second attachment point 202.
Fig. 7 is the structural representation of the back door threshold inner panel shrouding of the body tail endergonic structure of preferred embodiment of the present invention, see also Fig. 1 and Fig. 7, back door threshold inner panel shrouding 180 is approximately perpendicular to the length direction of threshold 120, and back door threshold inner panel shrouding 180 is for sealing to form cavity body structure near the end of tire by threshold 120.Back door threshold inner panel shrouding 180 comprises connected first end 181 and the second end 182, wherein first end 181 is connected to floor side member 112 away from the edge of the second end 182 by the first shrouding flange 181a, and the second end 182 is connected to back door threshold lower supporting plate 123 away from the edge of first end 181 by the second shrouding flange 182a.First end 181 and the second end 182 are welded to rear floor 132 near side, rear floor 132 by the 3rd shrouding flange 183.First end 182 is away from the contour shape of the edge contour cooperation towing arm medial cradle 170 of side, rear floor 132, and the 3rd support flange 171c and part the 4th support flange 173a of towing arm medial cradle 170 are welded on first end 182.The edge contour cooperation back door threshold guide rails assembling plate 140 of the second end 182 away from side, rear floor 132 and the contour shape of back door threshold lower supporting plate 123, wherein, back door threshold guide rails assembling plate 140 is soldered near the edge of back door threshold guide rails assembling plate 140 by the 4th shrouding flange 182b; Back door threshold lower supporting plate 123 is soldered to by the 5th shrouding flange 182c near the edge of back door threshold lower supporting plate 123.
In the present embodiment, connecting panel 160 after back door threshold inner panel, towing arm medial cradle 170 and back door threshold inner panel shrouding 180 are positioned at automotive C column bottom, the front end of rear wheel cover (not shown), and with back door threshold lower supporting plate 123, rear floor 132, back door threshold guide rails assembling plate 140, closed cavity body structure is formed between floor side member 112, towing arm is arranged between towing arm medial cradle 170 and back door threshold lower supporting plate 123, stress from towing arm is passed to floor side member 112 by the first attachment point 201 of towing arm medial cradle 170, be passed on back door threshold assembly (back door threshold lower supporting plate 123 and back door threshold inner panel 122) by the second attachment point 202 of back door threshold lower supporting plate 123, this cavity body structure is reliably solid, improve the stability of towing arm.Have again, after back door threshold inner panel, connecting panel 160, Rear drag arm medial cradle 170, back door threshold inner panel shrouding 180 are welded into a general frame structure floor side member 112, rear floor 132, back door threshold guide rails assembling plate 140, back door threshold lower supporting plate 123, the impulsive force brought from threshold during side impact is also delivered to floor side member 112 by connecting panel 160, Rear drag arm medial cradle 170 and back door threshold inner panel shrouding 180 after back door threshold inner panel and the crossbeam that is connected with floor side member 112, improves the collision performance of vehicle body side impact.
Body tail endergonic structure also comprises shock absorber mounting board 190.Fig. 8 is the structural representation that the damping adapter plate of the body tail endergonic structure of preferred embodiment of the present invention is arranged on floor side member, Fig. 9 a is that the damping adapter plate of the body tail endergonic structure of preferred embodiment of the present invention is arranged on structural representation, Fig. 9 b is the structural representation at another visual angle of Fig. 9 a, see also Fig. 2, Fig. 3, Fig. 8, Fig. 9 a and Fig. 9 b, shock absorber mounting board 190 is arranged on the floor side member 112 that is positioned at below rear wheel cover, and shock absorber mounting board 190 connects the threaded line pipe 196 of bumper for arranging.Floor side member 112 comprise successively be connected the first longeron side plate 1121, longeron base plate 1122 and the second longeron side plate 1123, first longeron side plate 1121 and the second longeron side plate 1123 are oppositely arranged, groove 1124 is surrounded, open end welding floor 130 (not illustrating in figure) of groove 1124 by the first longeron side plate 1121, longeron base plate 1122 and the second longeron side plate 1123.Shock absorber mounting board 190 to be arranged in groove 1124 and weld the cavity body structure being formed and close with the first longeron side plate 1121, longeron base plate 1122 and the second longeron side plate 1123.
Particularly, shock absorber mounting board 190 is soldered to the first longeron side plate 1121 near the edge of the first longeron side plate 1121 by the first bumper flange 190a; Shock absorber mounting board 190 is soldered to the second longeron side plate 1123 near the edge of the second longeron side plate 1123 by the second bumper flange 190b.Shock absorber mounting board 190 comprises installs top board 191, the first side wall 192 and the second sidewall 193, and the first side wall 192 and the second sidewall 193 are oppositely arranged, and installs top board 191 and connects the first side wall 192 and the second sidewall 193 formation " U " font structure.The first side wall 192 is soldered to longeron base plate 1122, second sidewall 193 away from the edge installing top board 191 by the 3rd bumper flange 190c and is soldered to longeron base plate 1122 away from the edge installing top board 191 by the 4th bumper flange 190d.
Top board 191 is installed and is provided with the installation portion 194 coordinated with threaded line pipe 196, installation portion 194 have coordinate with threaded line pipe 196 overall diameter and opening towards the deep-slotted chip breaker 194a of longeron base plate 1122, threaded line pipe 196 to be fixed between the first longeron side plate 1121 and the second longeron side plate 1122 and to be positioned at the deep-slotted chip breaker 194a of installation portion 194.Particularly, first longeron side plate 1121 and the second longeron side plate 1123 are equipped with the through hole (figure do not mark) installing threaded line pipe 196, threaded line pipe 196 be arranged in the first longeron side plate 1121 and the second longeron side plate 1123 through hole and against the installation portion 194 installing top board 191.In the present embodiment, installation portion 194 is provided with multiple spaced access hole 195, and access hole 195 is such as Long Circle, and its long diametric(al) is consistent with floor side member 112 length direction.By the access hole 195 on installation portion 194 by threaded line pipe 196 and installation portion 194 weld together; access hole 195 adds the bonding area of carbon-dioxide arc welding, effectively prevents threaded line pipe 196 stress be subject on vehicle width direction from pullling and the weld of threaded line pipe 196 was lost efficacy.
When vehicle operating, car body can cause producing very large stress between bumper and shock absorber mounting points at the impulsive force that different operating mode produces, make the part deformation of shock absorber mounting points, weld ftractures, shock absorber mounting board of the present invention 190 is in fall in groove 1124 that " U " character form structure is arranged on floor side member 112 and to form cavity body structure with floor side member 112, vehicle width direction is played a supporting role to floor side member 112, improve the local stiffness of floor side member 112, prevent floor side member 112 and shock absorber mounting board 190 are subject to the impulsive force from bumper and produce distortion.
The invention has the beneficial effects as follows: MPV automobile comprises longeron 110, the floor 130 being arranged on the threshold 120 outside longeron and being connected with threshold 120 with longeron 110, longeron 110 comprises front side member 111 and floor side member 112, floor 130 comprises front floor 131 and rear floor 132, threshold 120 comprises back door threshold lower supporting plate 123 and back door threshold guide rails assembling plate 140, body tail endergonic structure also comprise successively be connected back door threshold inner panel after connecting panel 160, towing arm medial cradle 170 and back door threshold inner panel shrouding 180, connecting panel 160 after back door threshold inner panel, towing arm medial cradle 170 and back door threshold inner panel shrouding 180 are positioned at automotive C column bottom, the front end of rear wheel cover, connecting panel 160 after back door threshold inner panel, towing arm medial cradle 170 and back door threshold inner panel shrouding 180 and back door threshold lower supporting plate 123, back door threshold guide rails assembling plate 140, rear floor 132, the cavity body structure formed between floor side member 112, towing arm is arranged between towing arm medial cradle 170 and back door threshold lower supporting plate 123, stress from towing arm is passed to floor side member 112 by towing arm medial cradle 170, be passed on back door threshold assembly (back door threshold lower supporting plate 123 and back door threshold inner panel 122) by back door threshold lower supporting plate 123, this cavity body structure is reliably solid, improve the stability of towing arm.Have again, after back door threshold inner panel, connecting panel 160, Rear drag arm medial cradle 170, back door threshold inner panel shrouding 180 are welded into a general frame structure floor side member 112, rear floor 132, back door threshold guide rails assembling plate 140, back door threshold lower supporting plate 123, the impulsive force brought from threshold 120 during side impact is also delivered to floor side member 112 by connecting panel 160, Rear drag arm medial cradle 170 and back door threshold inner panel shrouding 180 after back door threshold inner panel and the crossbeam 210 that is connected with floor side member 112, improves the collision performance of vehicle body side impact.
Further, body tail endergonic structure also comprises threshold stay bearing plate 150, threshold stay bearing plate 150 connects front door sill inner panel 121, back door threshold inner panel 122, front floor 131 and front side member 111 and forms cavity body structure, threshold stay bearing plate 150 aligns with automobile B-column, side connects front door sill inner panel 121 and back door threshold inner panel 12, opposite side connects front side member 111, car body is when side is collided, a part absorbs energy by threshold stay bearing plate 150, remainder energy transferring, to front side member 111, effectively improves the collision performance of B columnar region.There is between front door sill inner panel 121 and back door threshold inner panel 122 welded joint 124, the welded joint 124 between front door sill inner panel 121 and back door threshold inner panel 122 is encased with threshold stay bearing plate 150, add the local stiffness in welded joint 124 region, at automobile when there is side impact with biased touching, front door sill inner panel 121 can also avoid the bending in welded joint 124 region to be out of shape.
Further, body tail endergonic structure also comprises shock absorber mounting board 190, shock absorber mounting board 190 is arranged on the first longeron side plate 1121 of floor side member 112, longeron base plate 1122 and the second longeron side plate 1123 to be formed in groove 1124 and with the first longeron side plate 1121, longeron base plate 1122 and the second longeron 1123 side plate form cavity body structure, shock absorber mounting board 190 is for mounting shock absorber, when vehicle operating, car body can cause producing very large stress between bumper and shock absorber mounting points at the impulsive force that different operating mode produces, make the part deformation of shock absorber mounting points, weld ftractures, shock absorber mounting board of the present invention 190 is in fall in groove 1124 that " U " character form structure is arranged on floor side member 112 and to form cavity body structure with floor side member 112, vehicle width direction is played a supporting role to floor side member 112, improve the local stiffness of floor side member 112, floor side member 112 and shock absorber mounting board 190 is prevented to be subject to the impulsive force from bumper and to produce distortion.
Arranging rationally of body tail endergonic structure of the present invention, forms systematic endergonic structure, can effectively transmit and disperse the various load inside and outside from car.Improve the rigidity of the threshold of body tail and wheel arch area, mode and NVH performance.
Above body tail endergonic structure provided by the present invention is described in detail, apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (10)

1. a body tail endergonic structure, it is characterized in that, comprise longeron (110), the threshold (120) being arranged on described longeron (110) outside and the floor (130) be connected with described threshold (120) with described longeron (110), described longeron (110) comprises front side member (111) and floor side member (112), described floor (130) comprises front floor (131) and rear floor (132), described threshold (120) comprises back door threshold lower supporting plate (123) and back door threshold guide rails assembling plate (140), described body tail endergonic structure also comprise successively be connected back door threshold inner panel after connecting panel (160), towing arm medial cradle (170) and back door threshold inner panel shrouding (180), the cavity body structure formed between connecting panel (160), described towing arm medial cradle (170) and described back door threshold inner panel shrouding (180) and described back door threshold lower supporting plate (123), described back door threshold guide rails assembling plate (140), described rear floor (132), described floor side member (112) after described back door threshold inner panel.
2. body tail endergonic structure as claimed in claim 1, it is characterized in that, described threshold (120) also comprises front door sill inner panel (121) and back door threshold inner panel (122), described body tail endergonic structure also comprises threshold stay bearing plate (150), and described threshold stay bearing plate (150) connects described front door sill inner panel (121), described back door threshold inner panel (122), described front floor (131) and described front side member (111) and forms cavity body structure.
3. body tail endergonic structure as claimed in claim 2, it is characterized in that, described threshold stay bearing plate (150) comprises support baseboard (151), the first support side plate (152) and the second support side plate (153), described first support side plate (152) and described second support side plate (153) are oppositely arranged, and described support baseboard (151) connects described first support side plate (152) and described second support side plate (153); Described support baseboard (151) has the first support flange (151a) and second and supports flange (151b), described first supports flange (151a) is soldered to described front door sill inner panel (121) and described back door threshold inner panel (122), and described second supports flange (151b) is soldered to described front side member (111); Described first support side plate (152) has the 3rd and supports flange (152a), and the described 3rd supports flange (152a) is respectively welded to described front door sill inner panel (121), described front floor (131) and described front side member (111); Described second support side plate (153) has the 4th and supports flange (153a), described 4th supports flange (153a) is respectively welded to described back door threshold inner panel (122), described front floor (131) and described front side member (111), and the welding edges of described back door threshold guide rails assembling plate (140) is on described second support side plate (153).
4. body tail endergonic structure as claimed in claim 3, is characterized in that the support baseboard (151) of described threshold stay bearing plate (150) having and dodges through hole (155).
5. body tail endergonic structure as claimed in claim 1, it is characterized in that, after described back door threshold inner panel, connecting panel (160) comprises connecting bottom board (161), the first connecting lateral plate (162) and the second connecting lateral plate (163), described first connecting lateral plate (162) and described second connecting lateral plate (163) are oppositely arranged, and described connecting bottom board (161) connects described first connecting lateral plate (162) and described second connecting lateral plate (163); Described connecting bottom board (161) has the first connection flange (161a) and is connected flange (161b) with second, described first connects flange (161a) is soldered to described floor side member (112), and described second connects flange (161b) is soldered to described back door threshold lower supporting plate (123); Described first connecting lateral plate (162) has the 3rd and connects flange (162a), and the described 3rd connects flange (162a) is respectively welded to described back door threshold lower supporting plate (123), described back door threshold guide rails assembling plate (140), described rear floor (132) and described floor side member (112); Described second connecting lateral plate (163) has the 4th and connects flange (163a), and the described 4th connects flange (163a) is respectively welded to described back door threshold lower supporting plate (123) and described back door threshold guide rails assembling plate (140).
6. body tail endergonic structure as claimed in claim 5, it is characterized in that, described towing arm medial cradle (170) comprises connected installation portion (171) and connecting portion (173), described installation portion (171) comprises adapter plate (1711), the first installation side plate (1712) be oppositely arranged and the second installation side plate (1713), and described adapter plate (1711) arches upward towards the direction away from described rear floor (132); Described connecting portion (173) connects described first and installs side plate (1712) and described second installation side plate (1713); Described second installs side plate (1713) has the first support flange (171a), described first support flange (171a) is soldered to described floor side member (112), described adapter plate (1711) has the second support flange (171b) and the 3rd support flange (171c), described second support flange (171b) is soldered to second connecting lateral plate (163) of connecting panel (160) after described back door threshold inner panel, and described 3rd support flange (171c) is soldered to described back door threshold inner panel shrouding (180); Described connecting portion (173) has the 4th support flange (173a), and described 4th support flange (173a) is respectively welded to described back door threshold guide rails assembling plate (140) and described back door threshold inner panel shrouding (180); Described adapter plate (1711) is provided with the first attachment point (201) for installing towing arm, and described back door threshold lower supporting plate (123) is provided with the second attachment point (202) for installing towing arm near the position of described towing arm medial cradle (170).
7. body tail endergonic structure as claimed in claim 6, it is characterized in that, described back door threshold inner panel shrouding (180) comprises connected first end (181) and the second end (182), described first end (181) is connected to described floor side member (112) away from the edge of described the second end (182) by the first shrouding flange (181a), described the second end (182) is connected to described back door threshold lower supporting plate (123) away from the edge of described first end (181) by the second shrouding flange (182a), described first end (181) and described the second end (182) are welded to described rear floor (132) near described rear floor (132) side by the 3rd shrouding flange (183), described the second end (182) is soldered to described back door threshold guide rails assembling plate (140) away from described rear floor (132) side by the 4th shrouding flange (182b), is soldered to described back door threshold lower supporting plate (123) by the 5th shrouding flange (182c).
8. body tail endergonic structure as claimed in claim 1, it is characterized in that, described body tail endergonic structure also comprises shock absorber mounting board (190), described shock absorber mounting board (190) is for arranging threaded line pipe (196), described floor side member (112) comprise successively be connected the first longeron side plate (1121), longeron base plate (1122) and the second longeron side plate (1123), described first longeron side plate (1121) and described second longeron side plate (1123) are oppositely arranged and form groove (1124) with described longeron base plate (1122), described shock absorber mounting board (190) is arranged in described groove (1124), described shock absorber mounting board (190) and the first longeron side plate (1121), longeron base plate (1122) and the second longeron side plate (1123) form cavity body structure.
9. body tail endergonic structure as claimed in claim 8, it is characterized in that, described shock absorber mounting board (190) is soldered to described first longeron side plate (1121) near the edge of described first longeron side plate (1121) by the first bumper flange (190a); Described shock absorber mounting board (190) is soldered to described second longeron side plate (1123) near the edge of described second longeron side plate (1123) by the second bumper flange (190b); Described shock absorber mounting board (190) comprises installs top board (191), the first side wall (192) and the second sidewall (193), described the first side wall (192) and described second sidewall (193) are oppositely arranged, and described installation top board (191) connects described the first side wall (192) and described second sidewall (193); Described the first side wall (192) is soldered to described longeron base plate (1122) away from the edge of described installation top board (191) by the 3rd bumper flange (190c), and described second sidewall (193) is soldered to described longeron base plate (1122) away from the edge of described installation top board (191) by the 4th bumper flange (190d); Described installation top board (191) has installation portion (194), described installation portion (194) has the deep-slotted chip breaker (194a) of opening towards described longeron base plate (1122), and described threaded line pipe (196) to be fixed between described first longeron side plate (1121) and described second longeron side plate (1122) and to be positioned at the deep-slotted chip breaker (194a) of described installation portion (194).
10. body tail endergonic structure as claimed in claim 9, it is characterized in that, described installation portion (194) is provided with multiple spaced access hole (195).
CN201511034085.6A 2015-12-30 2015-12-30 Body tail endergonic structure Active CN105501311B (en)

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CN104554481A (en) * 2014-12-26 2015-04-29 长城汽车股份有限公司 Front floor framework for vehicle body and vehicle
CN205273630U (en) * 2015-12-30 2016-06-01 广州汽车集团股份有限公司 Automobile body rear portion energy -absorbing structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10129533A (en) * 1996-11-06 1998-05-19 Nissan Motor Co Ltd Rear body structure of automobile
JP2004034808A (en) * 2002-07-02 2004-02-05 Honda Motor Co Ltd Vehicle body structure of fuel cell vehicle
JP2005247066A (en) * 2004-03-02 2005-09-15 Nissan Motor Co Ltd Vehicle body floor structure
CN201165251Y (en) * 2007-12-14 2008-12-17 奇瑞汽车股份有限公司 Automobile lower body construction
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