CN216002494U - Energy absorption device and automobile anti-collision beam - Google Patents
Energy absorption device and automobile anti-collision beam Download PDFInfo
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- CN216002494U CN216002494U CN202120578738.1U CN202120578738U CN216002494U CN 216002494 U CN216002494 U CN 216002494U CN 202120578738 U CN202120578738 U CN 202120578738U CN 216002494 U CN216002494 U CN 216002494U
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Abstract
The utility model discloses an energy absorption device and an automobile anti-collision beam, which comprise an energy absorption box, wherein the section of the energy absorption box is gradually enlarged from the front end side to the rear end side; the rear section of the energy absorption box has higher yield strength, so that the front section of the energy absorption box can collapse as much as possible to absorb energy in the collision process of a vehicle, the impact force transmitted to the automobile longitudinal beam is reduced, the damage of external collision to a vehicle body girder is reduced, the invasion of a cab can be avoided, and the energy absorption effect is improved.
Description
Technical Field
The utility model belongs to the technical field of automobile manufacturing, and relates to an energy absorption device and an automobile anti-collision beam.
Background
In order to reduce the damage to the vehicle body structure and the passengers in the vehicle caused by the collision during the driving process, the vehicle body structure is required to have the capabilities of energy absorption and deformation resistance, namely, when the vehicle is impacted, the energy of the vehicle body structure is required to be absorbed by a specific part of the vehicle body structure, and the acceleration of the vehicle impact is reduced as much as possible. An anti-collision beam with an energy absorption box is one of indispensable parts of a gas car; at present, most commonly used energy absorption boxes are all assembled and welded pieces, in order to achieve the purposes of saving working procedures, reducing cost and the like, the energy absorption boxes are designed into a square structure formed by combining two U-shaped parts through spot welding in the prior art, and the energy absorption boxes of the structure can not effectively guide collapse energy absorption, so that collision force is easily transmitted to a frame to cause cab intrusion.
Therefore, in view of the above problems, there is a need for an energy absorbing device and an automobile anti-collision beam, so as to increase the yield strength and energy absorbing effect of the energy absorbing device.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an energy absorber, including an energy absorption box, wherein the cross section of the energy absorption box is gradually enlarged from a front end side to a rear end side.
Furthermore, a plurality of crumple grooves are formed in the side portions of the energy absorption boxes, and the crumple grooves are used for guiding the front sections of the energy absorption boxes to be crumpled preferentially when the energy absorption boxes are subjected to front impact force.
Furthermore, the outer wall of the energy absorption box is inwards sunken to form an energy absorption groove, the energy absorption groove comprises a front guide groove and a rear guide groove which are longitudinally arranged, and a guide bulge is arranged between the front guide groove and the rear guide groove.
Further, the rear guide groove longitudinally extends backwards to the rear end of the energy absorption box.
Furthermore, the front end of the energy absorption box is decagonal, and the rear guide groove is a V-shaped groove and extends to the rear end of the energy absorption box, so that the rear end of the energy absorption box is dodecagonal.
Furthermore, the energy absorption box is a box-shaped structure which is formed by surrounding two side plates and is provided with holes at the front end and the rear end.
Furthermore, each side plate is provided with a crumple groove, and the two crumple grooves are distributed in a central symmetry mode after the two side plates surround a box-shaped structure.
The utility model also provides an automobile anti-collision beam which comprises a cross beam body, wherein the back of the cross beam body is connected with a plurality of energy absorption devices.
Furthermore, the front side of the beam body is provided with a groove formed by stamping, the back of the beam body is provided with a rear protruding part, the front side of the beam body is provided with a front protruding part, the front end of the energy absorption box is provided with a matching groove matched with the rear protruding part, the position of the matching groove corresponds to the position of the crumpling groove in the longitudinal direction, the back side of the beam body is fixedly connected to the front end of the energy absorption box, the rear protruding part is matched with the matching groove in a shape-fitting manner, and the back of the front protruding part is fixedly connected with the corresponding position of the front end of the energy absorption box.
Further, the rear protruding portion is formed at a vertically middle position of the beam body and makes the front surface of the beam body form two front protruding portions.
The utility model has the beneficial effects that:
the yield strength of the rear section of the energy absorption box is greater than that of the front section of the energy absorption box, so that the front section of the energy absorption box can collapse as much as possible to absorb energy in the collision process of a vehicle, the impact force transmitted to a longitudinal beam of the vehicle is reduced, the damage of external collision to a vehicle body girder is reduced, the invasion of a cab can be avoided, and the energy absorption effect is improved;
according to the energy absorption box, the front side wall of the front guide groove and the guide protrusions serve as weak links of the whole energy absorption box, so that the whole energy absorption box is guided to longitudinally collapse at the front side of the front guide groove and between the front guide groove and the rear guide groove when the front side impact is received, the energy absorption effect is improved, and the impact force transmitted backwards is reduced; in addition, the rear guide groove longitudinally extends backwards to the rear end of the energy absorption box, so that the number of edges of the section of the rear end of the energy absorption box is greater than that of the front end of the energy absorption box, and the rear end of the energy absorption box is used as a support end to form stable support; when the energy-absorbing box is collided frontally, the rear guide groove is used as a reinforcing rib, the structural strength of the rear section of the energy-absorbing box is improved, the supporting performance of the rear section of the energy-absorbing box is improved, and in addition, when the energy-absorbing box is collided sidewise, the rear guide groove is used as a crumpling guide structure, so that the rear section of the energy-absorbing box is folded and crumpled in the direction perpendicular to the longitudinal direction, and the energy-absorbing effect of side collision is improved.
Drawings
The utility model is further described below with reference to the figures and examples.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic structural view of an automotive impact beam;
Detailed Description
As shown in the figure: the embodiment provides an energy absorption device, which comprises an energy absorption box 1, wherein the section of the energy absorption box is gradually enlarged from the front end side to the rear end side. Referring to fig. 1, the energy-absorbing box is of a front-rear opening structure, the front end of the energy-absorbing box is connected with the anti-collision beam, the rear end of the energy-absorbing box is connected with the automobile longitudinal beam, the front end face and the rear end face of the energy-absorbing box are of a polygonal structure, the rear end of the energy-absorbing box has the function of a base and is connected with the automobile longitudinal beam and used as a support of the whole energy-absorbing box, the yield strength of the rear section of the energy-absorbing box is improved through a larger cross section, and the front end face of the energy-absorbing box is used as a collision surface for bearing external collision; the structure enables the front section of the energy absorption box to collapse as much as possible to absorb energy in the collision process of a vehicle, reduces the impact force transmitted to a vehicle longitudinal beam, reduces the damage of external collision to a vehicle body girder, can avoid the invasion of a cab, and improves the energy absorption effect.
In this embodiment, the lateral portion of the energy-absorbing box is provided with a plurality of crumple grooves, and the crumple grooves are used for guiding the front section of the energy-absorbing box to be crumpled preferentially when the energy-absorbing box is subjected to a front impact force. The longitudinal direction is consistent with the front and back direction of the energy absorption box, and when the energy absorption box is arranged on the vehicle body, the longitudinal direction is consistent with the length direction of the vehicle body; the front impact force refers to longitudinal impact force, the energy absorption groove can be arranged in the middle of the box body, and when the front end of the energy absorption box is guided to be collided through the energy absorption groove, the front section of the energy absorption box is limited to collapse and absorb energy, so that the impact force transmitted to the rear end of the energy absorption box is reduced.
In this embodiment, the outer wall of the energy absorption box is recessed inwards to form an energy absorption groove, the energy absorption groove comprises a front guide groove 2 and a rear guide groove 3 which are longitudinally arranged, and a guide protrusion 4 is arranged between the front guide groove and the rear guide groove. As shown in fig. 1, the energy-absorbing grooves are longitudinal grooves, and the front side walls and the guide protrusions of the front guide grooves serve as weak links of the whole energy-absorbing box, so that the whole energy-absorbing box is guided to longitudinally collapse at the front sides of the front guide grooves and between the front guide grooves and the rear guide grooves when the front impact is applied, the energy-absorbing effect is improved, and the impact force transmitted backwards is reduced.
In this embodiment, the rear guide groove extends longitudinally rearward to the rear end of the crash box. Referring to fig. 1, the guide groove extends to the rear end of the energy-absorbing box, so that the number of edges of the section of the rear end of the energy-absorbing box is greater than that of the front end of the energy-absorbing box, and the rear end of the energy-absorbing box is used as a support end to form stable support; when the energy-absorbing box is collided frontally, the rear guide groove is used as a reinforcing rib, the structural strength of the rear section of the energy-absorbing box is improved, the supporting performance of the rear section of the energy-absorbing box is improved, and in addition, when the energy-absorbing box is collided sidewise, the rear guide groove is used as a crumpling guide structure, so that the rear section of the energy-absorbing box is folded and crumpled in the direction perpendicular to the longitudinal direction, and the energy-absorbing effect of side collision is improved.
In this embodiment, the front end of the energy absorption box is decagonal, and the rear guide groove is a V-shaped groove and extends to the rear end of the energy absorption box, so that the rear end of the energy absorption box is dodecagonal. The V-shaped included angle of the rear guide groove can be adjusted according to actual conditions, the rear guide groove is a V-shaped groove and is beneficial to guiding the energy absorption box to collapse when being impacted laterally, the V-shaped groove is beneficial to guiding the energy absorption box to collapse and absorb energy when being impacted laterally, the number of the edges of the rear end part of the energy absorption box is more, the supporting effect of the rear section of the energy absorption box is improved, the number of the edges of the front end part is less, the collapse and energy absorption of the front section of the energy absorption box is facilitated, the number of the edges of the front end part and the number of the edges of the rear end part are more, and the impact in different lateral directions is facilitated to be accepted.
In this embodiment, the energy absorption box is a box-shaped structure with openings at the front and rear ends, which is formed by surrounding two side plates 1 a. As shown in fig. 1 and 3, the front ends of the side plates are in a hexagonal structure, and the rear ends of the side plates are in a heptagonal structure; the front end edges of the two side plates are mutually lapped, so that the two side plates are provided with two superposed surfaces to form a decagon after encircling, and the rear ends of the side plates are also provided with two superposed surfaces to form a dodecagon after encircling; the two side plates are welded and fixed at the lapping surface.
In this embodiment, each of the side plates is provided with a collapsing groove, and after the two side plates surround a box-shaped structure, the two collapsing grooves are distributed in a centrosymmetric manner. Referring to fig. 3, the central angle of the two crush slots is 180 degrees, and the crush slots are in a left-right symmetrical arrangement structure; the two crumple tanks are beneficial to improving the directional crumple precision.
The embodiment also provides an automobile anti-collision beam which comprises a cross beam body 5, wherein the back of the cross beam body is connected with a plurality of the energy absorption devices. As shown in fig. 4, the beam body is of a beam structure, the left side and the right side of the back of the beam body are both connected with energy absorption boxes, the front ends of the energy absorption boxes are connected to the back of the beam body, the rear ends of the energy absorption boxes are connected with cover plates 6, the cover plates are connected to the automobile longitudinal beams, and the collision energy absorption requirements of an automobile are met through the arrangement of the two energy absorption boxes.
In this embodiment, the front of the beam body is provided with a groove formed by stamping, a rear protrusion 5a is formed at the back of the beam body, and a front protrusion 5b is formed at the front of the beam body, the front end of the energy-absorbing box is provided with a matching groove 1b adapted to the rear protrusion, the matching groove is located at a position corresponding to the position of the collapse groove in the longitudinal direction, the back of the beam body is fixedly connected to the front end of the energy-absorbing box, the rear protrusion is in form-fit with the matching groove, and the back of the front protrusion is fixedly connected to the corresponding position of the front end of the energy-absorbing box. As shown in fig. 2, a matching groove is formed in the rear end face of the side wall where the crumpling groove of the energy absorption box is located, as shown in fig. 4, the back of the front protruding portion of the beam body is connected with the energy absorption box, the rear protruding portion enables the front side of the beam body to form a groove, when the beam body is slightly impacted, the front protruding portion on the front side of the beam body is impacted, force is transmitted to the side wall, which is not grooved, of the energy absorption box through the front protruding portion, impact force is transmitted to the whole vehicle body through the rigid surface of the energy absorption box, parts are guaranteed not to deform, passengers in the vehicle are protected from being injured, and after-sale maintenance cost is reduced; when the impact force is increased, the rear protruding part of the cross beam body transmits the impact force to the side face of the energy absorption groove of the energy absorption box, so that the energy absorption box is collapsed to absorb energy, and a better energy absorption effect is achieved.
In this embodiment, the rear protrusion 5a is formed at a vertically middle position of the cross beam body such that the front surface of the cross beam body forms two front protrusions. This structure allows the two front projections to be provided on the upper and lower sides of the two rear projections, respectively. As shown in fig. 2 and 4, the rear end portions of the two side plates 1b are provided with matching grooves, the two matching grooves are transversely opposite, the rear protruding portion transversely penetrates through the whole beam body, the rear protruding portion is fittingly installed in the two matching grooves of the energy absorption box, the upper side wall and the lower side wall of the beam body are respectively wrapped on the upper outer side wall and the lower outer side wall of the energy absorption box, the back portion of the front protruding portion correspondingly supports the positions of the plurality of side walls of the energy absorption box, and the transmission of stress to the frame during slight collision is facilitated.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. An energy absorbing device, characterized by: the energy absorption box comprises an energy absorption box, wherein the section of the energy absorption box is gradually enlarged from the front end side to the rear end side;
the side part of the energy absorption box is provided with a plurality of crumpling grooves, and the crumpling grooves are used for guiding the front section part to be crumpled preferentially when the energy absorption box is subjected to front impact force.
2. An energy absorber device according to claim 1 wherein: the outer wall of the energy absorption box is inwards sunken to form an energy absorption groove, the energy absorption groove comprises a front guide groove and a rear guide groove which are longitudinally arranged, and a guide bulge is arranged between the front guide groove and the rear guide groove.
3. An energy absorber device according to claim 2 wherein: the rear guide groove longitudinally extends backwards to the rear end of the energy absorption box.
4. An energy absorber device according to claim 2 wherein: the front end of the energy absorption box is decagonal, and the rear guide groove is a V-shaped groove and extends to the rear end of the energy absorption box, so that the rear end of the energy absorption box is dodecagonal.
5. An energy absorber device according to claim 1 wherein: the energy absorption box is a box-shaped structure which is formed by two side plates in a surrounding mode and is provided with holes at the front end and the rear end.
6. An energy absorber according to claim 5, wherein: each side plate is provided with a crumple slot, and the two crumple slots are distributed in a central symmetry mode after the two side plates surround a box-shaped structure.
7. An automobile anti-collision beam is characterized in that: the energy absorption device comprises a beam body, wherein a plurality of energy absorption devices as claimed in any one of claims 1 to 6 are connected to the back of the beam body.
8. The automotive impact beam of claim 7, wherein: the crossbeam body openly has the recess that the punching press formed and forms back protruding portion at crossbeam body back and form preceding protruding portion at crossbeam body openly, the cooperation groove with back protruding portion adaptation is seted up to the front end of energy-absorbing box, the position of cooperation groove corresponds with the position of ulcerate groove in longitudinal direction, the roof beam body back fixed connection is in energy-absorbing box front end and back protruding portion and the form-fit cooperation of cooperation groove, preceding protruding portion back and energy-absorbing box's front end correspond position fixed connection.
9. The automotive impact beam of claim 8, wherein: the rear protruding part is formed at the vertical middle position of the beam body and enables the front surface of the beam body to form two front protruding parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578738.1U CN216002494U (en) | 2021-03-22 | 2021-03-22 | Energy absorption device and automobile anti-collision beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578738.1U CN216002494U (en) | 2021-03-22 | 2021-03-22 | Energy absorption device and automobile anti-collision beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216002494U true CN216002494U (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120578738.1U Active CN216002494U (en) | 2021-03-22 | 2021-03-22 | Energy absorption device and automobile anti-collision beam |
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| Country | Link |
|---|---|
| CN (1) | CN216002494U (en) |
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2021
- 2021-03-22 CN CN202120578738.1U patent/CN216002494U/en active Active
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