CN113306633B - Automobile longitudinal beam force transmission structure - Google Patents
Automobile longitudinal beam force transmission structure Download PDFInfo
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- CN113306633B CN113306633B CN202110694002.5A CN202110694002A CN113306633B CN 113306633 B CN113306633 B CN 113306633B CN 202110694002 A CN202110694002 A CN 202110694002A CN 113306633 B CN113306633 B CN 113306633B
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- longitudinal beam
- floor
- longitudinal
- force transmission
- front wall
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- 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
- B62D25/20—Floors or bottom sub-units
Abstract
The invention discloses a force transmission structure of an automobile longitudinal beam, which comprises a front coaming and two cabin-sending longitudinal beams, wherein the two cabin-sending longitudinal beams are respectively and vertically arranged on the same side of the front coaming. The center channel is arranged in the middle of the front coaming and faces the direction far away from the cabin longitudinal beam. The number of the front floor longitudinal beams is two, the two front floor longitudinal beams are erected in the two connecting grooves in the front coaming respectively, and each front floor longitudinal beam is in lap joint with the corresponding cabin-launching longitudinal beam. The number of the rear floor longitudinal beams is two, and the two rear floor longitudinal beams are arranged at the connecting part of the middle floor and the front floor in a longitudinal connection mode and extend towards the direction far away from the front floor longitudinal beams. The invention simplifies the connection mode of the engine room longitudinal beam, the front wall plate, the central channel and the doorsill, and can ensure that the collision force applied to the engine room longitudinal beam can face the direction of the doorsill. The force transmission efficiency of the front floor longitudinal beam and the rear floor longitudinal beam is improved through the oblique design of the front floor longitudinal beam and the optimization of the molded surface of the rear floor longitudinal beam.
Description
Technical Field
The invention relates to the field of automobile body structures, in particular to an automobile longitudinal beam force transmission structure.
Background
With the development of society, people pay more and more attention to the safety problem of automobiles, and are required to bear strict direct impact and side impact, so that the safety of drivers and passengers is ensured. In the new vehicle collision test NCAP (New Car Association program) evaluation, the rigidity of the passenger compartment has a direct relation with the injury of passengers, the rigidity of the passenger compartment is high, the deformation of the compartment body in the collision is small, the living space of the passengers is ensured, and the injury of the passengers is correspondingly reduced. When the vehicle body shape becomes too large after a collision, the passenger can be injured or even die, so that the effective transmission of collision force is important.
As shown in fig. 1, in the prior art, 80% of the energy of both the frontal collision and the side collision is transmitted to the vehicle body lower side member. In general, a part of the collision force is transmitted from the cabin side member 21 to the rocker 26 and the center tunnel side member 29 via the torque boxes 201 and 202, and the other part of the collision force is transmitted to the rear floor side member 27 via the front floor side member 25. The following problems will occur: firstly, the front floor longitudinal beam 25 and the rear floor longitudinal beam 27 are in staggered lap joint, force is transferred in a transition mode through the middle floor 28, and the transfer effect of the plate vertical lap joint collision force is poor; secondly, the engine room longitudinal beam 21 transmits the collision force to the central channel 23 through the torque box 202, and transmits the force to the front wall panel through the front wall cross beam 22, so that more parts are used, and the lap joint level is complicated.
Therefore, how to provide a force transmission structure of a longitudinal beam of an automobile capable of effectively transmitting collision force becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a force transmission structure of an automobile longitudinal beam, which can effectively transmit collision force, so that the collision force borne by a cabin-sending longitudinal beam is transmitted towards a direction of a doorsill, and the safety of a passenger cabin is ensured.
According to an aspect of the present invention, there is provided an automobile longitudinal beam force transmission structure, including:
the front wall plate is provided with two symmetrically arranged connecting grooves;
the number of the engine compartment longitudinal beams is two, and the two engine compartment longitudinal beams are respectively and vertically arranged on the same side of the front wall plate;
the central channel is arranged in the middle of the front wall plate and faces away from the longitudinal cabin beam;
the number of the front floor longitudinal beams is two, the two front floor longitudinal beams are respectively erected in the two connecting grooves on the front wall plate, and each front floor longitudinal beam is lapped with the corresponding cabin-sending longitudinal beam;
the middle part of the middle floor is connected with one end, far away from the longitudinal beam of the central channel, the middle floor is perpendicular to the central channel, and two ends, far away from the central channel, of the middle floor are connected with the two longitudinal beams of the front floor;
the two sides of the central channel are provided with the central channel longitudinal beams, and the two ends of the central channel longitudinal beams are connected with the front wall plate and the middle floor plate;
the number of the rear floor longitudinal beams is two, and the two rear floor longitudinal beams are arranged at the connecting part of the middle floor and the front floor in a longitudinal connection mode and extend towards the direction far away from the front floor longitudinal beams;
the two front floors are longitudinally connected and are provided with the doorsills in the opposite directions, and the two ends of each doorsill are connected with the front wall plate and the rear floor longitudinal beam.
Optionally, according to the force transmission structure of the automobile longitudinal beam, the front floor longitudinal beam is divided into an overlapping section, a force transmission section and a force unloading section, wherein the overlapping section is arranged in the connecting groove and is connected with the engine room longitudinal beam;
the force transmission section inclines towards the direction far away from the central channel, and the force unloading section is parallel to the central channel.
Optionally, according to the force transmission structure for the automobile longitudinal beam, a lengthened connecting block is further arranged at a joint of the rear floor longitudinal beam and the front floor longitudinal beam, and the front floor longitudinal beam is connected with the connecting block.
Optionally, according to the force transmission structure for the automobile longitudinal beam, two ends of the middle floor are also connected with the connecting blocks.
Optionally, according to the force transmission structure for the longitudinal beam of the automobile, a front wall reinforcing plate is further arranged on a part of the front wall plate between the front wall longitudinal beam and the doorsill.
Optionally, according to the force transfer structure of the automobile longitudinal beam, the front wall reinforcing plate is of an inclined design.
Optionally, according to the force transmission structure for the automobile longitudinal beam, one end, close to the doorsill, of the front wall reinforcing plate is provided with a flange, and the flange is lapped on the upper side of the doorsill.
Optionally, the force transmission structure for the automobile longitudinal beam further comprises a longitudinal beam connecting plate, wherein a first connecting port and a second connecting port are arranged on the longitudinal beam connecting plate, and the longitudinal beam connecting plate is arranged at an inner side included angle where the front wall plate and the engine compartment longitudinal beam are intersected;
the first connecting port is lapped above the cabin longitudinal beam, and the second connecting port is lapped above the central channel longitudinal beam.
Optionally, according to the force transmission structure for the automobile longitudinal beam, a flange is arranged on the longitudinal beam connecting plate and attached to the side face, close to the engine compartment longitudinal beam, of the front wall plate in an extending mode, a third connecting port is arranged on the flange, and the third connecting port is overlapped on the front wall plate.
Optionally, according to the force transmission structure for the longitudinal beam of the automobile, the first connection port and the second connection port are designed in an arc shape, so that the collision force applied to the longitudinal beam of the engine compartment is dispersed to the longitudinal beam of the central passage along the arc edge of the longitudinal beam connection plate.
The force transmission structure of the automobile longitudinal beam simplifies the connection mode of the engine room longitudinal beam with the front wall plate, the central channel and the threshold, can ensure that the collision force applied to the engine room longitudinal beam can face the direction of the threshold, and avoids the driver from being impacted by a larger front face at the position;
through the mode of directly connecting the front floor longitudinal beam with the rear floor longitudinal beam, the oblique design of the front floor longitudinal beam and the optimization of the molded surface of the rear floor longitudinal beam are adopted, so that the collision force is efficiently transmitted to the rear floor longitudinal beam from the front floor longitudinal beam, and the force transmission efficiency of the front floor longitudinal beam and the rear floor longitudinal beam is improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a force transfer structure of a longitudinal beam of an automobile in the prior art;
FIG. 2 is a schematic connection diagram of a force transfer structure for a longitudinal beam of an automobile according to the present disclosure;
FIG. 3 is a schematic structural view of a stringer connecting plate disclosed in the present invention;
FIG. 4 is a schematic structural view of a front floor stringer as disclosed herein;
FIG. 5 is a schematic structural view of a rear floor stringer as disclosed herein;
FIG. 6 is a schematic structural view of a center channel stringer as disclosed herein;
fig. 7 is a schematic structural view of the dash panel disclosed in the present invention.
Description of reference numerals: 1-a hair chamber longitudinal beam; 2-a dash panel; 21-a connecting groove; 22-cowl stiffener panel; 3-front floor stringer; 31-a lap section; 32-a force transfer section; 33-force relief section; 4-threshold; 5-longitudinal beam connecting plates; 51-a first connection port; 52-a second connection port; 53-third connection port; 6-center channel stringer; 7-a central channel; 8-rear floor stringer; 81-connecting block; 9-middle floor.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 2 to 7, the present invention provides a force transmission structure of a vehicle longitudinal beam, comprising: the front wall plate 2 is provided with two symmetrical connecting grooves 21 on the front wall plate 2.
Send out cabin longeron 1, send out the quantity of cabin longeron 1 and be two, send out cabin longeron 1 for two and set up perpendicularly respectively in preceding bounding wall 2 with one side, send out cabin longeron 1 and bear the point for main front impact, transmit front impact to preceding bounding wall 2 on through sending cabin longeron 1.
And the central channel 7 is arranged in the middle of the front boarding 2 and faces away from the longitudinal boarding 1.
The number of the front floor longitudinal beams 3 is two, the two front floor longitudinal beams 3 are respectively erected in the two connecting grooves 21 on the front coaming 2, and each front floor longitudinal beam 3 is in lap joint with the corresponding cabin-sending longitudinal beam 1.
The middle part of the middle floor 9 is connected with one end of the central channel 7 far away from the central channel longitudinal beam 6, the middle floor 9 is perpendicular to the central channel 7, and two ends of the middle floor 9 far away from the central channel 7 are connected with the two front floor longitudinal beams 3.
The center channel longitudinal beam 6 is arranged on each of two sides of the center channel 7, and two ends of each center channel longitudinal beam 6 are connected with the front wall plate 2 and the middle floor plate 9.
The number of the rear floor longitudinal beams 8 is two, and the two rear floor longitudinal beams 8 are arranged at the joint of the middle floor 9 and the front floor longitudinal beam 3 and extend towards the direction far away from the front floor longitudinal beam 3.
In the specific implementation, the crash forces are transmitted from the engine compartment longitudinal member 1 to the front wall 2 and the front floor longitudinal member 3, through the front wall 2 and on to the rocker 4 and the center tunnel 7 and the center tunnel longitudinal member 6, in contrast to the conventional longitudinal member transmission structure, in which the front floor longitudinal member 3 is directly connected to the rear floor longitudinal member 8, so that the front floor longitudinal member 3 is of a tilted design. Thereby make the impact can be through the quick transmission of front floor longeron 3 to back floor longeron 8, this kind of longeron biography power structure can make the front impact that the position that the passenger was located received diminish, and the cockpit is compared and is passed the power knot in traditional longeron and can be difficult to by the extrusion deformation for passenger's living space has obtained effectual assurance.
Further, as shown in fig. 5, the front floor longitudinal beam 3 disclosed by the present invention is divided into an overlapping section 31, a force transmission section 32 and a force unloading section 33, wherein the overlapping section 31 is arranged in the connecting groove 21 and connected with the engine room longitudinal beam 1; the force transfer section 32 is inclined away from the central passage 7 and the force discharge section 33 is parallel to the central passage 7. In practice, since the front floor frame 3 needs to be directly connected to the rear floor frame 8, the front floor frame 3 should be designed to be inclined, in the present invention, the lap joint section 31 is mainly connected to the front wall 2 and the front-cabin frame 1 to function as a conduction force, and the main force transmission section 32 is designed to be inclined to transmit the collision force toward the rocker 4 and the rear floor frame 8 away from the passenger cabin.
Further, as shown in fig. 6, the joint between the rear floor side member 8 and the front floor side member 3 of the present invention is further provided with an elongated connecting block 81, and the front floor side member 3 is connected to the connecting block 81. The profile of the rear floor longitudinal beam 8 is optimized, the connecting part of the rear floor longitudinal beam and the front floor longitudinal beam 3 is flanged and lengthened, the direct welding with the rear side of the front floor longitudinal beam 3 is facilitated, the connecting strength of the rear floor longitudinal beam and the front floor longitudinal beam is ensured, and the force transmission efficiency is improved.
Still further, both ends of the middle floor 9 are also connected to the connection blocks 81. When the front floor longitudinal beam 3 transmits the collision force to the rear floor longitudinal beam 8, the connection between the middle floor 9 and the front floor is in a corresponding connection relation, so that a stable triangular structure is formed between the middle floor 9 and the front floor, and the stability of the force transmission structure of the longitudinal beam is ensured.
Further, as shown in fig. 7, a cowl reinforcement panel 22 is provided to a portion of the dash panel 2 between the front floor side member 3 and the rocker 4. On preceding bounding wall 2 transmits the collision power to threshold 4, and preceding bounding wall 2 receives to come from sending out the cabin and indulge the power of linking for the head-on collision, and preceding bounding wall 2 is perpendicular to sends out cabin longeron 1, leads to the collision power that preceding bounding wall 2 received to be direct head-on collision basically, through preceding enclosing reinforcing plate 22 and replacing the moment of torsion box I structure among the prior art, can also alleviate automobile body weight and reduction in production cost.
Still further, the cowl reinforcement panel 22 is designed to be inclined, and the inclined cowl reinforcement panel 22 plays a role of a certain force of unloading.
Still further, the end of the front wall reinforcing plate 22 close to the threshold 4 is provided with a flange, and the flange is lapped on the upper side of the threshold 4, so that the connection stability between the front wall plate 2 and the threshold 4 is improved.
Further, as shown in fig. 4. The invention discloses a force transmission structure of a longitudinal beam of an automobile, which further comprises a longitudinal beam connecting plate 5, wherein the longitudinal beam connecting plate 5 is provided with a first connecting port 51 and a second connecting port 52, and the longitudinal beam connecting plate 5 is arranged at an inner side included angle where a front coaming 2 and a cabin-launching longitudinal beam 1 are intersected; the first connection opening 51 overlaps above the cabin stringer 1 and the second connection opening 52 overlaps above the center channel stringer 6. Longeron connecting plate 5 is connected with preceding bounding wall 2, centre channel longeron 6 simultaneously, simplifies the overlap joint level to can also replace preceding crossbeam and the moment of torsion box of enclosing among the prior art structure, unite two into one.
And furthermore, a flanging is arranged on the side face, close to the cabin-emitting longitudinal beam 1, of the front wall plate 2 attached to the longitudinal beam connecting plate 5 in an extending mode, a third connecting port 53 is arranged on the flanging, and the third connecting port 53 is lapped on the front wall plate 2. Make longeron connecting plate 5 wrap up dash panel 2 through the turn-ups for be connected between third connector 53 and dash panel 2 is more stable.
Still further, the first connecting port 51 and the second connecting port 52 are designed to be circular arc-shaped, so that the collision force applied to the engine compartment longitudinal beam 1 is dispersed to the center tunnel longitudinal beam 6 along the circular arc edge of the longitudinal beam connecting plate 5. In order to improve the stability of the longitudinal beam force transmission structure, when the engine compartment longitudinal beam 1 is subjected to a frontal collision force, the circular arc-shaped longitudinal beam connecting plates 5 can enable the force transmitted to the central passage 7 and the central passage longitudinal beam 6 to be oblique, and the force transmission efficiency of the longitudinal beam structure can be improved similarly to the principle that the front floor longitudinal beam 3 is transmitted to the rear floor longitudinal beam 8.
The force transmission structure of the automobile longitudinal beam simplifies the connection mode of the engine room longitudinal beam 1 with the front wall plate 2, the central channel 7 and the threshold 4, can ensure that the collision force applied to the engine room longitudinal beam 1 can face the direction of the threshold 4, and avoids the position of a driver from being impacted by a larger front face; through the mode of directly connecting the front floor longitudinal beam 3 with the rear floor longitudinal beam 8, the oblique design of the front floor longitudinal beam 3 and the optimization of the molded surface of the rear floor longitudinal beam 8 are adopted, so that the collision force is efficiently transmitted to the rear floor longitudinal beam 8 from the front floor longitudinal beam 3, and the force transmission efficiency of the front floor longitudinal beam 3 and the rear floor longitudinal beam 8 is improved.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. An automobile longitudinal beam force transmission structure is characterized by comprising:
the front wall plate is provided with two symmetrically arranged connecting grooves;
the number of the engine room longitudinal beams is two, and the two engine room longitudinal beams are respectively and vertically arranged on the same side of the front wall plate;
the central channel is arranged in the middle of the front wall plate and faces away from the longitudinal cabin beam;
the number of the front floor longitudinal beams is two, the two front floor longitudinal beams are respectively erected in the two connecting grooves on the front wall plate, and each front floor longitudinal beam is lapped with the corresponding cabin-sending longitudinal beam;
the middle part of the middle floor is connected with one end, far away from the longitudinal beam of the central channel, the middle floor is perpendicular to the central channel, and two ends, far away from the central channel, of the middle floor are connected with the two longitudinal beams of the front floor;
the two sides of the central channel are provided with the central channel longitudinal beams, and the two ends of the central channel longitudinal beams are connected with the front wall plate and the middle floor plate;
the number of the rear floor longitudinal beams is two, and the two rear floor longitudinal beams are arranged at the connecting part of the middle floor and the front floor in a longitudinal mode and extend towards the direction far away from the front floor longitudinal beams;
the two front floors are longitudinally connected and are provided with the doorsills in the opposite directions, and the two ends of each doorsill are connected with the front wall plate and the rear floor longitudinal beam;
the longitudinal beam connecting plate is provided with a first connecting port and a second connecting port and is arranged at an inner side included angle where the front wall plate and the engine compartment longitudinal beam are intersected;
the first connecting port is lapped above the engine compartment longitudinal beam, and the second connecting port is lapped above the central channel longitudinal beam;
the side face, close to the cabin sending longitudinal beam, of the front wall plate attached to the longitudinal beam connecting plate extends to form a turned edge, a third connector is arranged on the turned edge, and the third connector is lapped on the front wall plate.
2. The automobile longitudinal beam force transmission structure according to claim 1, wherein the front floor longitudinal beam is divided into an overlapping section, a force transmission section and a force unloading section, and the overlapping section is arranged in the connecting groove and connected with the engine room longitudinal beam;
the force transmission section inclines towards the direction far away from the central channel, and the force unloading section is parallel to the central channel.
3. The automobile longitudinal beam force transmission structure of claim 1, wherein a lengthened connecting block is further arranged at the joint of the rear floor longitudinal beam and the front floor longitudinal beam, and the front floor longitudinal beam is connected with the connecting block.
4. The automobile rail force transmission structure of claim 3, wherein both ends of the middle floor are also connected with the connecting blocks.
5. The automobile side rail force transmission structure of claim 1, wherein a front wall reinforcement plate is further provided on a portion of the front wall panel between the front floor side rail and the rocker.
6. The automobile rail force transfer structure of claim 5, wherein the cowl reinforcement panel is of a slanted design.
7. The automobile longitudinal beam force transmission structure of claim 6, wherein one end, close to the threshold, of the front wall reinforcing plate is provided with a flanging, and the flanging is lapped on the upper side of the threshold.
8. The automobile longitudinal beam force transmission structure of claim 1, wherein the first connecting port and the second connecting port are designed in a circular arc shape, so that collision force applied to the engine compartment longitudinal beam is dispersed to the center channel longitudinal beam along a circular arc edge of the longitudinal beam connecting plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110694002.5A CN113306633B (en) | 2021-06-22 | 2021-06-22 | Automobile longitudinal beam force transmission structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110694002.5A CN113306633B (en) | 2021-06-22 | 2021-06-22 | Automobile longitudinal beam force transmission structure |
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| CN113306633A CN113306633A (en) | 2021-08-27 |
| CN113306633B true CN113306633B (en) | 2022-05-17 |
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| JP4853101B2 (en) * | 2006-05-12 | 2012-01-11 | マツダ株式会社 | Front body structure of automobile |
| CN101259853A (en) * | 2007-12-05 | 2008-09-10 | 奇瑞汽车股份有限公司 | Automobile soleplate structure |
| CN104590390A (en) * | 2015-01-26 | 2015-05-06 | 安徽江淮汽车股份有限公司 | Front wall assembly of heavy truck and heavy truck |
| CN205203123U (en) * | 2015-12-17 | 2016-05-04 | 郑州比克新能源汽车有限公司 | Electric car body collision energy -absorbing structure |
| JP6766745B2 (en) * | 2017-05-11 | 2020-10-14 | トヨタ自動車株式会社 | vehicle |
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| CN207060185U (en) * | 2017-07-12 | 2018-03-02 | 宝沃汽车（中国）有限公司 | The floor assembly and vehicle of vehicle |
| CN107963130B (en) * | 2017-11-22 | 2019-08-13 | 威马智慧出行科技（上海）有限公司 | Front wall assembly and automobile including it |
| CN112937697B (en) * | 2021-03-18 | 2022-08-26 | 东风柳州汽车有限公司 | Longeron additional strengthening and car |
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| CN108001537A (en) * | 2017-03-31 | 2018-05-08 | 长城汽车股份有限公司 | Vehicle body and vehicle |
| CN207535996U (en) * | 2017-10-30 | 2018-06-26 | 宁波吉利汽车研究开发有限公司 | Floor panel assembly after a kind of vehicle |
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