CN115339407A - Staged energy absorption type automobile collision energy absorption box - Google Patents
Staged energy absorption type automobile collision energy absorption box Download PDFInfo
- Publication number
- CN115339407A CN115339407A CN202210733109.0A CN202210733109A CN115339407A CN 115339407 A CN115339407 A CN 115339407A CN 202210733109 A CN202210733109 A CN 202210733109A CN 115339407 A CN115339407 A CN 115339407A
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- Prior art keywords
- energy absorption
- box body
- absorption box
- energy
- staged
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 176
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000001968 nicotinic acid Nutrition 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R2019/264—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means using cellular structures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a staged energy absorption type automobile collision energy absorption box, which comprises an energy absorption box body and energy absorption box mounting bases arranged at two ends of the energy absorption box body; the energy absorption box mounting base comprises a base cavity, a base mounting surface and an energy absorption box body mounting hole, the energy absorption box body mounting hole is communicated with the base cavity, the energy absorption box body mounting hole is arranged towards the end part of the energy absorption box body, and a connecting surface is arranged at the energy absorption box body mounting hole; the two end parts of the energy absorption box body are inserted in the corresponding mounting holes of the energy absorption box body and form releasable fixed connection with the connecting surface, so that staged energy absorption is formed; in the first energy absorption stage, only the energy absorption box body participates in energy absorption; and in the second energy absorption stage, the energy absorption box body and the base cavity both participate in energy absorption. The invention can effectively improve the front collision and offset collision performance under the condition of medium and low speed. The invention can realize easy collapse and staged energy absorption, and has the effects of more energy absorption, light weight, convenient replacement and maintenance, low cost and the like.
Description
Technical Field
The invention relates to the technical field of automobile collision energy absorption boxes, in particular to a staged energy absorption type automobile collision energy absorption box.
Background
The automobile collision energy absorption box is arranged between an automobile body/frame longitudinal beam and a front/rear anti-collision cross beam, and the mounting modes are all bolt connection. The function of the energy absorber is to absorb the energy generated when the automobile collides. Generally, the energy absorption boxes are connected by welding and bolts, and are made of steel materials, and have a large number of square, rectangular, circular and the like in structure and cross-sectional shapes.
Patent nos. CN216761681U, CN112158159B, CN216424328U, etc. are still in the single-stage energy absorption range although they are improved to some extent.
The single-stage energy absorption automobile collision energy absorption box has the following defects: the structure form is simple, the energy absorption effect is general, the collapse form is single, the weight and the volume are large, and the maintenance and replacement cost is high.
Disclosure of Invention
The invention provides a staged energy absorption type automobile collision energy absorption box for solving the problems in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a staged energy absorption type automobile collision energy absorption box comprises an energy absorption box body and energy absorption box mounting bases arranged at two ends of the energy absorption box body;
the energy absorption box mounting base comprises a base cavity, a base mounting surface and an energy absorption box body mounting hole, the energy absorption box body mounting hole is communicated with the base cavity, the energy absorption box body mounting hole is arranged towards the end part of the energy absorption box body, and a connecting surface is arranged at the energy absorption box body mounting hole;
the two end parts of the energy absorption box body are inserted in the corresponding mounting holes of the energy absorption box body and form releasable fixed connection with the connecting surface, so that staged energy absorption is formed;
the staged energy absorption comprises a first energy absorption stage and a second energy absorption stage, wherein in the first energy absorption stage, the end part of the energy absorption box body is fixedly connected with the connecting surface, and only the energy absorption box body participates in energy absorption; and in the second energy absorption stage, the fixed connection state of the end part of the energy absorption box body and the connection surface is released, the energy absorption box body falls into a base cavity of the energy absorption box mounting base, and the energy absorption box body and the base cavity participate in energy absorption.
Furthermore, the connecting surface is a riveting surface protruding towards the end part of the energy absorption box body, the riveting surface is arranged around the mounting hole of the energy absorption box body, and the end part of the energy absorption box body is connected with the riveting surface through a hollow rivet, so that releasable fixed connection is formed.
Further, the hollow rivets are uniformly distributed on the riveting surface.
Furthermore, the energy absorption box body comprises a body outer wall and a body inner cavity, and the body inner cavity is of a honeycomb filling structure.
Furthermore, the outer wall of the body is provided with a crumple slot.
Furthermore, the cross section of the outer wall of the energy absorption box body is a regular hexagon, and the mounting hole and the connecting surface of the energy absorption box body are also of a matched regular hexagon structure.
Further, a bolt hole is formed in a base mounting surface of the energy absorption box mounting base, and the energy absorption box mounting base is connected with the longitudinal beam and the front/rear anti-collision cross beam through a bolt arranged at the bolt hole.
Furthermore, the diameter of the energy absorption box mounting base is larger than that of the energy absorption box body, so that a dumbbell-shaped structure is formed.
Furthermore, the energy absorption box mounting base is of a regular hexagon structure.
The invention has the beneficial effects that:
according to the automobile collision energy-absorbing box-shaped component stage energy-absorbing mode, when the automobile collision energy-absorbing box collides at a low speed, the first energy-absorbing stage works (only the energy-absorbing box body participates in energy absorption); during medium-speed collision, the energy absorption box firstly goes through a first energy absorption stage (only the energy absorption box body participates in energy absorption), and then the energy absorption box works in a second energy absorption stage (both the energy absorption box body and the base cavity participate in energy absorption), so that the front collision and offset collision performance under the medium-low speed condition can be effectively improved.
The diameter of the energy absorption box mounting base is larger than that of the energy absorption box body, a dumbbell-shaped structure is formed, the cross sections of the two ends of the dumbbell-shaped structure are large in area, the middle cross section of the dumbbell-shaped structure is small and hollow, and the overall rigidity and the supporting performance are high.
The inner cavity of the energy absorption box body is of a honeycomb filling structure, and the honeycomb structure has good natural strength and more compression deformation energy absorption by using structural bionics.
The invention can realize easy collapse and staged energy absorption, and has the effects of more energy absorption, light weight, convenient replacement and maintenance, low cost and the like.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the present invention partially in section
FIG. 3 is a front view of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a schematic illustration of the present invention in a first absorption stage;
FIG. 7 is a preliminary schematic illustration of the invention in a second energy absorbing stage;
figure 8 is a schematic representation of the present invention in a second energy absorbing stage.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 8, the staged energy absorption type automobile crash energy absorption box of the invention comprises an energy absorption box body 2 and energy absorption box mounting bases 1 and 3 arranged at two ends of the energy absorption box body 2. As shown in fig. 1 to 5, the crash box of the vehicle is in an uncompressed state (before a collision).
In the embodiment, the energy absorption box body 2 comprises a body outer wall 7 and a body inner cavity 8, the section of the body outer wall 7 is a regular hexagon, and a crumple groove 10 is formed in the prism. The inner cavity 8 of the body is of a honeycomb filling structure, the structure bionics is applied, the honeycomb structure is good in natural strength, and the compression deformation energy absorption is high.
In this embodiment, the diameter of the crash box mounting bases 1 and 3 is larger than that of the crash box body 2, so as to form a dumbbell-shaped structure. Meanwhile, the energy absorption box mounting base is of a regular hexagon structure. The design ensures that the cross-sectional areas of the two ends of the automobile collision energy absorption box are large, the middle cross section is small and hollow, and the integral rigidity and the support performance are higher.
The energy absorption box mounting base comprises a base cavity 5, a base mounting surface 4 and an energy absorption box body mounting hole. The energy-absorbing box body mounting hole is communicated with the base cavity 5, the energy-absorbing box body mounting hole is arranged towards the end part of the energy-absorbing box body 2, and the connecting surface is arranged at the position of the energy-absorbing box body mounting hole 2.
In this embodiment, the mounting hole and the connecting surface of the energy absorption box body are also of a regular hexagonal structure. Meanwhile, the connecting surface is a riveting surface 6 protruding towards the end part of the energy-absorbing box body, and the riveting surface 6 is arranged around the mounting hole of the energy-absorbing box body.
In this embodiment, a bolt hole is formed in a base mounting surface 4 of the energy absorption box mounting base, and the energy absorption box mounting bases 1 and 3 are connected with the longitudinal beam and the front/rear anti-collision cross beam through bolts arranged in the bolt hole.
The specific matching relationship between the energy absorption box mounting bases 1 and 3 and the energy absorption box body is as follows: the two end parts of the energy absorption box body 2 are inserted in the corresponding energy absorption box body mounting holes and connected with the riveting surfaces 6 through hollow rivets 9 (in the embodiment, the hollow rivets are uniformly distributed on the riveting surfaces 6, the 6 rivets are distributed at one end, the two ends are 12, and the nominal diameter of the hollow rivets is phi 3 mm), so that releasable fixed connection is formed, and further staged energy absorption is formed.
The staged energy absorption comprises a first energy absorption stage and a second energy absorption stage:
in the first energy absorption stage, the end part of the energy absorption box body 2 is fixedly connected with the riveting surface 6, and only the energy absorption box body 2 participates in energy absorption. The energy absorption box body 2 absorbs energy, the collapse groove 10 on the outer wall 7 of the body induces deformation, the honeycomb structure in the inner cavity 8 of the body is mainly used for absorbing collision energy, and the energy absorption box belongs to a single honeycomb energy absorption stage, and is shown in figure 6. At this point, the blind rivet 9 is subjected to a certain degree of shear force, but is not broken.
In the second energy absorption stage, the fixed connection state between the end of the energy absorption box body 2 and the riveting surface 6 is released (i.e. when the energy absorption box body 2 is compressed and deformed to a certain extent, the hollow rivet 9 is damaged and falls off due to impact and shearing, so that the fixed connection state is released), and the energy absorption box body 2 falls into the base cavity of the energy absorption box mounting bases 1 and 3 to form a second honeycomb structure, as shown in fig. 7. At this time, a double-honeycomb energy absorption stage is started, along with the continuation of collision, the energy absorption box body 2 continues to compress, deform and absorb energy in the base cavities of the energy absorption box mounting bases 1 and 3, meanwhile, the energy absorption box mounting bases are also compressed to absorb energy due to deformation, namely, the energy absorption box body 2 is compressed, deformed and absorbed through the honeycomb structure and the double-honeycomb structure of the second honeycomb structure, as shown in fig. 8.
The invention can effectively improve the front collision and offset collision performance under the condition of medium and low speed, and the specific principle is as follows:
when the energy absorption box collides at a low speed, only the energy absorption box body absorbs energy, and the energy absorption box belongs to a first energy absorption stage, namely a single-honeycomb energy absorption stage.
When the energy absorption box body 2 is compressed and deformed to a certain degree, the hollow rivet 9 is damaged and falls off due to impact and shearing, and then the energy absorption box body enters a second energy absorption stage (double-honeycomb energy absorption stage).
The invention can realize easy collapse and staged energy absorption, and has the effects of more energy absorption, light weight, convenient replacement and maintenance, low cost and the like.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and it is intended to cover in the claims the invention any modifications and equivalents.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to imply anything else, unless stated otherwise.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (9)
1. The utility model provides an automobile collision energy-absorbing box of stage energy-absorbing formula which characterized in that: the energy absorption box comprises an energy absorption box body and energy absorption box mounting bases arranged at two ends of the energy absorption box body;
the energy absorption box mounting base comprises a base cavity, a base mounting surface and an energy absorption box body mounting hole, the energy absorption box body mounting hole is communicated with the base cavity, the energy absorption box body mounting hole is arranged towards the end part of the energy absorption box body, and a connecting surface is arranged at the energy absorption box body mounting hole;
the two end parts of the energy absorption box body are inserted in the corresponding mounting holes of the energy absorption box body and form releasable fixed connection with the connecting surface, so that staged energy absorption is formed;
the staged energy absorption comprises a first energy absorption stage and a second energy absorption stage, during the first energy absorption stage, the end part of the energy absorption box body is fixedly connected with the connecting surface, and only the energy absorption box body participates in energy absorption; and in the second energy absorption stage, the fixed connection state of the end part of the energy absorption box body and the connection surface is released, the energy absorption box body falls into a base cavity of the energy absorption box mounting base, and the energy absorption box body and the base cavity participate in energy absorption.
2. The staged energy absorber for an automotive crash box of claim 1, wherein: the connecting surface is a riveting surface protruding towards the end part of the energy absorption box body, the riveting surface is arranged around the mounting hole of the energy absorption box body, and the end part of the energy absorption box body is connected with the riveting surface through a hollow rivet, so that releasable fixed connection is formed.
3. The staged energy absorber for an automotive crash box of claim 2, wherein: the hollow rivets are uniformly distributed on the riveting surface.
4. The staged energy absorber automotive crash box of claim 1, wherein: the energy absorption box body comprises a body outer wall and a body inner cavity, and the body inner cavity is of a honeycomb filling structure.
5. The staged energy absorber for an automotive crash box of claim 4, wherein: the outer wall of the body is provided with a crumple slot.
6. The staged energy absorber for an automotive crash box of claim 4, wherein: the cross section of the outer wall of the energy absorption box body is a regular hexagon, and the mounting hole and the connecting surface of the energy absorption box body are also of a matched regular hexagon structure.
7. The staged energy absorber automotive crash box of claim 1, wherein: the energy absorption box mounting base is connected with the longitudinal beam and the front/rear anti-collision cross beam through bolts arranged at the bolt holes.
8. A staged energy absorption automotive crash box according to any one of claims 1-7, characterized in that: the diameter of the energy-absorbing box mounting base is larger than that of the energy-absorbing box body, so that a dumbbell-shaped structure is formed.
9. The staged energy absorber automotive crash box of claim 8, wherein: the energy absorption box mounting base is of a regular hexagon structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733109.0A CN115339407A (en) | 2022-06-27 | 2022-06-27 | Staged energy absorption type automobile collision energy absorption box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210733109.0A CN115339407A (en) | 2022-06-27 | 2022-06-27 | Staged energy absorption type automobile collision energy absorption box |
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| Publication Number | Publication Date |
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| CN115339407A true CN115339407A (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210733109.0A Pending CN115339407A (en) | 2022-06-27 | 2022-06-27 | Staged energy absorption type automobile collision energy absorption box |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100024761A (en) * | 2008-08-26 | 2010-03-08 | 주식회사 성우하이텍 | Crash box in automotive bumper system |
| CN104827997A (en) * | 2014-02-06 | 2015-08-12 | 现代自动车株式会社 | Crash box for vehicle |
| CN105151075A (en) * | 2015-09-30 | 2015-12-16 | 南车青岛四方机车车辆股份有限公司 | Energy absorption device and rail vehicle with energy absorption device |
| CN108032827A (en) * | 2018-01-12 | 2018-05-15 | 吉林大学 | A kind of vehicle energy absorption box with two-stage endergonic structure |
| CN208630537U (en) * | 2018-07-18 | 2019-03-22 | 衡阳市江源机械有限责任公司 | A kind of automobile buffer beam |
| CN212766082U (en) * | 2020-06-30 | 2021-03-23 | 华侨大学 | Energy absorption box |
| CN113147643A (en) * | 2021-05-04 | 2021-07-23 | 东风汽车集团股份有限公司 | Modular energy absorption structure |
-
2022
- 2022-06-27 CN CN202210733109.0A patent/CN115339407A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100024761A (en) * | 2008-08-26 | 2010-03-08 | 주식회사 성우하이텍 | Crash box in automotive bumper system |
| CN104827997A (en) * | 2014-02-06 | 2015-08-12 | 现代自动车株式会社 | Crash box for vehicle |
| CN105151075A (en) * | 2015-09-30 | 2015-12-16 | 南车青岛四方机车车辆股份有限公司 | Energy absorption device and rail vehicle with energy absorption device |
| CN108032827A (en) * | 2018-01-12 | 2018-05-15 | 吉林大学 | A kind of vehicle energy absorption box with two-stage endergonic structure |
| CN208630537U (en) * | 2018-07-18 | 2019-03-22 | 衡阳市江源机械有限责任公司 | A kind of automobile buffer beam |
| CN212766082U (en) * | 2020-06-30 | 2021-03-23 | 华侨大学 | Energy absorption box |
| CN113147643A (en) * | 2021-05-04 | 2021-07-23 | 东风汽车集团股份有限公司 | Modular energy absorption structure |
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