CN217864349U - Anti-collision energy-absorbing structure combining automobile front longitudinal beam with deformation energy-absorbing function - Google Patents
Anti-collision energy-absorbing structure combining automobile front longitudinal beam with deformation energy-absorbing function Download PDFInfo
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- CN217864349U CN217864349U CN202220789696.0U CN202220789696U CN217864349U CN 217864349 U CN217864349 U CN 217864349U CN 202220789696 U CN202220789696 U CN 202220789696U CN 217864349 U CN217864349 U CN 217864349U
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- longitudinal beam
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Abstract
The utility model discloses an anti-collision energy-absorbing structure combining a front longitudinal beam with deformation energy absorption for an automobile, which belongs to the technical field of anti-collision and comprises an elastic resisting body arranged at the joint part of the front longitudinal beam and a main longitudinal beam, and a first buffer groove and a second buffer groove which are arranged in a groove at the rear section of the front longitudinal beam and are formed by transverse partitions; the elastic resisting body comprises an elastic resisting block I and an elastic resisting block II which are respectively filled in the buffer groove I and the buffer groove II; the front longitudinal beam is provided with a section of stroke sliding backwards along the main longitudinal beam; a first resisting piece and a second resisting piece are respectively arranged between the first elastic resisting block and the main longitudinal beam and between the second elastic resisting block and the main longitudinal beam. The front longitudinal beam has the advantages that when the front longitudinal beam is impacted and can not be deformed, partial energy is absorbed in the process of compressing the elastic resisting body before deformation, so that the anti-collision and energy-absorbing performance of the front longitudinal beam is obviously enhanced.
Description
Technical Field
The utility model relates to a longeron combines crashproof energy-absorbing structure of deformation energy-absorbing before car belongs to anticollision technical field.
Background
When the automobile is in a frontal collision, the energy dissipation is completed by the feeding and plastic deformation of the energy absorption part at the front part of the automobile so as to reduce the impact born by the passenger and ensure the safety of the passenger. The front main energy absorbing part comprises front longitudinal beam, fender, engine hood and other front thin-wall parts. The energy absorption effect of the front longitudinal beam is most obvious in the thin-wall parts, and the front longitudinal beam can absorb 50% -70% of collision energy when the automobile is in a frontal collision at the speed of 48km/h according to related researches. The design of the front longitudinal beam is therefore of great significance in passive safety. For the energy absorption of the front longitudinal beam, the core of the research of the prior art is as follows: (1) The energy must be converted in an irreversible manner, the kinetic energy of the entire vehicle movement in the collision being converted into the plastic deformation energy of the material deformation.
(2) During the deformation process, the energy absorption process must be completed by stable collapse deformation, and the maximum peak value of the energy absorption process is smaller than a safety value.
(3) The length of the energy absorption area needs to be controlled to reserve enough safety distance to ensure the safety of passengers.
(4) The load condition in collision has great uncertainty, and the front longitudinal beam has certain anti-interference deformability, so that the front longitudinal beam can absorb energy in a regular collapse deformation mode under different load conditions, and the safety of passengers can be ensured.
However, no matter be plastic deformation energy-absorbing or the deformation energy-absorbing of collapsing, the energy-absorbing effect all is limited, the utility model provides a structure that the energy-absorbing combined together warp with the front longitudinal to the energy-absorbing effect of front longitudinal when very big limit improves the collision.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to solve the limited problem of the energy absorption effect that only depends on the deformation of the front longitudinal beam.
To the above problem, the utility model provides a technical scheme is:
the anti-collision energy-absorbing structure comprises an elastic resisting body arranged at the joint of the front longitudinal beam and a main longitudinal beam, and the front longitudinal beam compresses the elastic resisting body to absorb energy at the moment before the front longitudinal beam deforms due to frontal impact, so that the total kinetic energy absorbed after the front longitudinal beam deforms is increased.
The buffer structure further comprises a first buffer groove and a second buffer groove, wherein the first buffer groove and the second buffer groove are formed by transverse partitions and are arranged in the grooves of the rear section of the front longitudinal beam in a front-rear mode; the elastic resisting body comprises an elastic resisting block I and an elastic resisting block II which are respectively filled in the buffer groove I and the buffer groove II; the rear section of the front longitudinal beam is arranged at the front section of the main longitudinal beam, and the front longitudinal beam has a section of stroke of backward sliding along the main longitudinal beam; and a first resisting part and a second resisting part are respectively arranged between the first elastic resisting block and the main longitudinal beam and between the second elastic resisting block and the main longitudinal beam, when the front longitudinal beam is impacted in the front, the front longitudinal beam is retreated, the first elastic resisting block is firstly compressed by the first resisting part and the main longitudinal beam, and the second elastic resisting block is compressed by the second resisting part and the main longitudinal beam.
Furthermore, a first waist-shaped hole and a second waist-shaped hole are respectively formed in the bottoms of the first buffer groove and the second buffer groove, a first bolt hole and a second bolt hole are respectively formed in the first elastic resisting block and the second elastic resisting block, and the first bolt hole is a waist-shaped hole; the first resisting piece and the second resisting piece are respectively a first bolt and a second bolt; the front section of the main longitudinal beam is tubular, a bolt hole III and a bolt hole IV are formed in the lower pipe wall of the main longitudinal beam, and a bolt hole V and a bolt hole VI are formed in the upper pipe wall of the main longitudinal beam; when the front longitudinal beam rear section is used, the front longitudinal beam rear section is inserted into the tubular main longitudinal beam front section, the first bolt penetrates through the third bolt hole, the first kidney-shaped hole, the first bolt hole and the fifth bolt hole in sequence, and the second bolt penetrates through the fourth bolt hole, the second kidney-shaped hole, the second bolt hole and the sixth bolt hole in sequence.
Further, when the second elastic resistance block is compressed to the limit, the front side member starts to be deformed.
Has the advantages that: when the front longitudinal beam is impacted and can not be deformed, partial energy is absorbed in the process of compressing the elastic resisting body before deformation, so that the anti-collision and energy-absorbing performance of the front longitudinal beam is obviously enhanced.
Drawings
FIG. 1 is a perspective view of a front side rail, showing a first buffer tank and a second buffer tank;
FIG. 2 is a perspective view of the front rail showing a first resilient resistance block and a second resilient resistance block;
FIG. 3 is a partial schematic view of the front side rail showing a first bolt and a second bolt passing through a first resilient resistance block and a second resilient resistance block;
FIG. 4 is a perspective view of a main stringer;
fig. 5 is a perspective view of the main longitudinal beam and the front longitudinal beam after being butted.
In the figure: 1. a main stringer; 11. a third bolt hole; 12. a bolt hole IV; 13. a bolt hole five; 14. a sixth bolt hole; 2. a front longitudinal beam; 21. a trench; 22. transverse septa; 23. a first buffer groove; 231. a first waist-shaped hole; 24. a second buffer groove; 241. a second waist-shaped hole; 3. a first elastic resisting block; 31. a first bolt hole; 4. a second elastic resisting block; 41. a second bolt hole; 5. a first bolt; 6. and a second bolt.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the front side member of the automobile is generally of a channel structure in order to reduce the weight while ensuring a certain structural strength. The front longitudinal beam also has a complex profile structure, and is applied to component installation, namely, the front longitudinal beam can be subjected to collapse deformation in the event of impact so as to absorb the impact kinetic energy and protect passengers.
As shown in fig. 1-5, an anti-collision energy-absorbing structure combining a front longitudinal beam with deformation energy absorption for an automobile comprises an elastic resisting body arranged at the joint of the front longitudinal beam 2 and a main longitudinal beam 1, at the moment before the front longitudinal beam 2 is deformed due to frontal impact, the front longitudinal beam 2 compresses the elastic resisting body to absorb energy, and then the front longitudinal beam 2 generates deformation energy absorption, so that the total kinetic energy absorbed after the front longitudinal beam 2 deforms is increased. Therefore, when the front longitudinal beam 2 generates energy-absorbing deformation, part of energy is absorbed in the process of compressing the elastic resisting body, and the anti-collision and energy-absorbing performance of the front longitudinal beam 2 is obviously enhanced.
The anti-collision energy-absorbing structure further comprises a first buffer groove 23 and a second buffer groove 24, wherein the first buffer groove 23 and the second buffer groove 24 are formed by the transverse partitions 22 and are arranged in the grooves 21 at the rear sections of the front longitudinal beams 2 in the front and rear directions; the elastic resisting body comprises an elastic resisting block I3 and an elastic resisting block II 4 which are respectively filled in a buffer groove I23 and a buffer groove II 24; the rear section of the front longitudinal beam 2 is arranged at the front section of the main longitudinal beam 1, and the front longitudinal beam 2 has a section of stroke of backward sliding along the main longitudinal beam 1; a first resisting part and a second resisting part are respectively arranged between the first elastic resisting block 3 and the main longitudinal beam 1 and between the second elastic resisting block 4 and the main longitudinal beam 1, when the front longitudinal beam 2 is impacted in the front face, the front longitudinal beam is retracted, the first elastic resisting block 3 is firstly compressed by the first resisting part and the main longitudinal beam 1, and the second elastic resisting block 4 is compressed by the second resisting part and the main longitudinal beam 1 again. Thus, the front side member 2 has undergone two compression elastic energy absorption processes, equal to the instant before the front side member 2 is deformed.
A first kidney-shaped hole 231 and a second kidney-shaped hole 241 are respectively arranged at the bottoms of the first buffer groove 23 and the second buffer groove 24, a first bolt hole 31 and a second bolt hole 41 are respectively arranged on the first elastic resisting block 3 and the second elastic resisting block 4, and the first bolt hole 31 is a kidney-shaped hole; the first resisting piece and the second resisting piece are respectively a first bolt 5 and a second bolt 6; the front section of the main longitudinal beam 1 is tubular, a bolt hole III 11 and a bolt hole IV 12 are formed in the lower pipe wall of the main longitudinal beam, and a bolt hole V13 and a bolt hole VI 14 are formed in the upper pipe wall of the main longitudinal beam; when the front longitudinal beam 2 is applied, the rear section of the front longitudinal beam 2 is inserted into the front section of the tubular main longitudinal beam 1, the bolt I5 sequentially penetrates through the bolt hole III 11, the waist-shaped hole I231, the bolt hole I31 and the bolt hole V13, and the bolt II 6 sequentially penetrates through the bolt hole IV 12, the waist-shaped hole II 241, the bolt hole II 41 and the bolt hole VI 14.
The front longitudinal beam of the automobile is combined with the deformation energy-absorbing anti-collision energy-absorbing structure, and when the second elastic resisting block 4 is compressed to the limit, the front longitudinal beam 2 begins to deform.
The above embodiments are only for the purpose of more clearly describing the invention and are not to be considered as limiting the scope of protection covered by the invention, any equivalent modifications being considered as falling within the scope of protection covered by the invention.
Claims (2)
1. The utility model provides an anticollision energy-absorbing structure that car front longitudinal combines deformation energy-absorbing which characterized in that: the anti-collision device comprises an elastic resisting body arranged at the joint part of a front longitudinal beam (2) and a main longitudinal beam (1), and a first buffer groove (23) and a second buffer groove (24) which are arranged in front and at the back of a groove (21) at the rear section of the front longitudinal beam (2) and are formed by transverse partitions (22); the elastic resisting body comprises a first elastic resisting block (3) and a second elastic resisting block (4) which are respectively filled in a first buffer groove (23) and a second buffer groove (24); the rear section of the front longitudinal beam (2) is arranged at the front section of the main longitudinal beam (1), and the front longitudinal beam (2) has a section of stroke of backward sliding along the main longitudinal beam (1); a first resisting piece and a second resisting piece are respectively arranged between the first elastic resisting block (3) and the main longitudinal beam (1) and between the second elastic resisting block (4) and the main longitudinal beam (1).
2. The automobile front longitudinal beam combined deformation energy absorption anti-collision energy absorption structure according to claim 1, characterized in that: the bottoms of the first buffer groove (23) and the second buffer groove (24) are respectively provided with a first waist-shaped hole (231) and a second waist-shaped hole (241), the first elastic resisting block (3) and the second elastic resisting block (4) are respectively provided with a first bolt hole (31) and a second bolt hole (41), and the first bolt hole (31) is a waist-shaped hole; the first resisting piece and the second resisting piece are respectively a first bolt (5) and a second bolt (6); the front section of the main longitudinal beam (1) is tubular, a bolt hole III (11) and a bolt hole IV (12) are formed in the lower pipe wall of the main longitudinal beam, and a bolt hole V (13) and a bolt hole VI (14) are formed in the upper pipe wall of the main longitudinal beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220789696.0U CN217864349U (en) | 2022-04-07 | 2022-04-07 | Anti-collision energy-absorbing structure combining automobile front longitudinal beam with deformation energy-absorbing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220789696.0U CN217864349U (en) | 2022-04-07 | 2022-04-07 | Anti-collision energy-absorbing structure combining automobile front longitudinal beam with deformation energy-absorbing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217864349U true CN217864349U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220789696.0U Active CN217864349U (en) | 2022-04-07 | 2022-04-07 | Anti-collision energy-absorbing structure combining automobile front longitudinal beam with deformation energy-absorbing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217864349U (en) |
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2022
- 2022-04-07 CN CN202220789696.0U patent/CN217864349U/en active Active
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