CN221162631U

CN221162631U - Energy-absorbing bumper

Info

Publication number: CN221162631U
Application number: CN202323612154.XU
Authority: CN
Inventors: 洪倩男
Original assignee: Zhejiang Traffic Technician College
Current assignee: Zhejiang Traffic Technician College
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2024-06-18
Anticipated expiration: 2033-12-28

Abstract

The utility model provides an energy-absorbing bumper, and belongs to the technical field of automobile bumpers. The energy-absorbing bumper comprises a main body structure and an energy-absorbing structure. The main structure comprises a lever body and three protection steel pipes, wherein the inner walls of the three protection steel pipes are fixedly connected with the outer wall of the lever body at equal intervals, the energy absorption structure comprises two energy absorption pieces I and two energy absorption pieces II, two ends of each energy absorption piece I are respectively fixedly connected with two opposite surfaces of the lever body and the energy absorption piece II, the outer wall of each energy absorption piece II is fixedly connected with the inner wall of the lever body, and the outer wall of each energy absorption piece I is internally wrapped, wherein the impact force from the front surface and the inclined side surface can be effectively absorbed and dispersed through the two energy absorption pieces I and the energy absorption piece II which are fixedly connected with the inner wall of the lever body, the weight of the structure is also controllable, and the modularized design is adopted, so that the space is saved, the compactness of the structure is improved, the production and maintenance processes are simpler and more convenient, and the production cost and the maintenance cost are reduced.

Description

Energy-absorbing bumper

Technical Field

The application relates to the technical field of automobile bumpers, in particular to an energy-absorbing bumper.

Background

Automobile front and rear end protection devices, commonly known as bumper systems, refer to parts mounted on the front and rear of the automobile and are typically made of energy absorbing materials such as steel, aluminum, plastic, foam, and the like. In the event of a collision of a vehicle, bumpers are in most cases involved. As a protection device, the design requirements are: during contact and light collisions, the vehicle is not severely damaged and the body, engine, exhaust system and cooling system, safety-related lights, etc. are protected from damage.

At present, the existing energy-absorbing bumper, for example, a new energy automobile energy-absorbing bumper (China, authorized bulletin day 20231020) with the existing publication number CN219857069U, in the scheme, the novel energy-absorbing bumper comprises a connecting plate, a groove is formed in one side of the connecting plate, a bumper body is arranged on one side of the connecting plate, a connecting block is fixedly connected with one side of the bumper body, the connecting block extends into the groove and is in sliding connection with the groove, a buffer component is arranged on one side of the connecting block and is arranged in the groove, two connecting grooves are formed in one side of the connecting plate, and the two connecting grooves are respectively formed in the front side and the rear side of the groove, and the novel energy-absorbing bumper has the following beneficial effects: through increasing buffer unit and auxiliary assembly, buffer unit's setting can be after the collision that the thick stick body produced, through damping spring one and damping spring two the interact power that produces when receiving the extrusion, also can increase the holding power when buffering connecting block and the thick stick body, auxiliary assembly's setting can utilize the process that the thick stick body atress moved simultaneously to make the threaded rod rotate through pinion rack and gear. However, the above scheme still has certain defects, and the inventor has found that. Because the energy-absorbing bumper has a complex structure, the energy-absorbing bumper is inconvenient to maintain; the design of the buffer component and the auxiliary component mainly absorbs the front impact force, but when the energy-absorbing bumper is impacted by the inclined side surface, the energy-absorbing bumper has poor absorption effect on the inclined side surface; the energy absorbing bumper itself also takes up more weight of the vehicle, which can affect the performance and fuel economy of the vehicle.

Disclosure of utility model

In order to overcome the defects, the application provides an energy-absorbing bumper which solves the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows:

An energy absorbing bumper includes a main body structure and an energy absorbing structure.

The main structure comprises a lever body and three protection steel pipes, wherein the inner walls of the protection steel pipes are equally spaced and fixedly connected with the outer wall of the lever body, the energy absorbing structure comprises two energy absorbing pieces I and two energy absorbing pieces II, two ends of the energy absorbing pieces I are respectively fixedly connected with two ends of the opposite surfaces of the lever body and the energy absorbing pieces II, the outer wall of the energy absorbing pieces II is fixedly connected with the inner wall of the lever body, and the inner wall of the energy absorbing pieces I is wrapped.

Further, energy-absorbing piece I includes energy-absorbing box, two energy-absorbing grooves, a plurality of crumple grooves, four recesses and honeycomb piece, the energy-absorbing box both ends respectively with the thick stick body with energy-absorbing piece II opposite face fixed connection, and the outer wall has been seted up two respectively energy-absorbing groove and a plurality of crumple grooves and four the recess, energy-absorbing box internally mounted has the honeycomb piece.

Further, energy-absorbing piece II includes buffer board, connecting plate, two swash plates, four through-holes and energy-absorbing rubber, the buffer board outer wall with the internal wall fixed connection of thick stick, the connecting plate both ends have two from having the swash plate, and two the swash plate outer end respectively with buffer board both ends fixed connection, the buffer board with four have been seted up respectively at connecting plate outer wall both ends the through-hole, just the through-hole inner wall with the laminating of energy-absorbing box outer wall, energy-absorbing rubber is filled into the buffer board with connecting plate and two between the swash plate.

Further, the lever body includes protection lever and two side bars, protection lever both ends are from having two side bars, and the outer wall equidistant be equipped with three protection steel pipe, the inner wall with energy-absorbing box with buffer board outer wall fixed connection.

Further, the main body structure further comprises two frames, two frames are respectively arranged at two ends of the inner wall of the protective bar, the outer wall of each frame is attached to the inner wall of each through hole, and the inner wall of each through hole is fixedly connected with the outer wall of each energy absorption box.

The beneficial effects are that: the application provides an energy-absorbing bumper, which can effectively absorb and disperse impact force from the front and inclined sides through the two energy-absorbing pieces I and the energy-absorbing piece II fixedly connected with the inner wall of the bumper body, so that the impact resistance of the bumper body is improved; the design of the energy-absorbing box, the energy-absorbing groove, the crumple groove, the groove and the honeycomb block, and the cooperation among the top frame formed by the buffer plate, the connecting plate and the sloping plate and the energy-absorbing rubber achieve the aim of multistage energy absorption, the structure is simple, the weight of the energy-absorbing box is controllable, the modularized design is adopted, the space is saved, the compactness of the structure is improved, the production and maintenance processes are simpler and more convenient, and the production cost and the maintenance cost are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an energy absorbing bumper structure provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of an energy-absorbing bumper fascia structure according to an embodiment of the application;

FIG. 3 is a schematic view of a buffer plate and a through hole display structure according to an embodiment of the present application;

FIG. 4 is a schematic view of a frame mounting structure according to an embodiment of the present application;

FIG. 5 is a schematic view of a connecting structure of a bar body and a protective steel pipe according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an energy absorber I according to an embodiment of the present application.

In the figure: 10-a main body structure; 110-a bar body; 120-protecting the steel pipe; 130-a frame; 20-an energy absorbing structure; 210-energy absorbing member I; 220-energy absorbing member II; 211-an energy absorption box; 212-an energy absorption groove; 213-crush slots; 214-grooves; 215-honeycomb blocks; 221-a buffer plate; 222-connecting plates; 223-sloping plate; 224-through holes; 225-energy-absorbing rubber; 111-a protective bar; 112-side bars.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.

Referring to fig. 1, the present application provides an energy absorbing bumper comprising a main body structure 10 and an energy absorbing structure 20.

Wherein the main structure 10 is used for increasing the strength of the bumper, and the energy absorbing structure 20 is used for absorbing impact force.

Referring to fig. 1, 2, 4 and 5, the main structure 10 includes a bar body 110, three protective steel pipes 120 welded to the outer wall of the bar body 110, and two frames 130 welded to the inner wall, wherein the bar body 110 includes a protective bar 111 and two side bars 112.

The design of the lever body 110 can protect the vehicle, and through the design of the protection lever 111 and the two side levers 112, the vehicle can be protected in all directions, so that the vehicle is not easy to deform or damage when being impacted, the safety of the vehicle and passengers can be better protected, the damage to important parts of the vehicle is reduced, and the safety is improved; and the protection bar 111 and the side bar 112 are integrated and made of high-strength steel or aluminum alloy and the like so as to improve the impact resistance and the service life of the protection bar.

The design of the protective steel pipe 120 improves the impact resistance of the lever body 110, and the rigidity and stability of the lever body 110 can be increased through welding and fixing the lever body 110 and the three protective steel pipes 120, so that the lever body 110 is not easy to deform or damage when impacted; and the protective steel pipe 120 may be made of a seamless steel pipe or a welded steel pipe, and is coated with an anti-rust paint to improve corrosion resistance.

Wherein, the design of frame 130 is convenient for strengthen the connectivity between the thick stick body 110 and energy-absorbing piece I210, through the frame 130 that the inner wall of protection thick stick 111 was equipped with, is convenient for install energy-absorbing box 211 and buffer board 221, is convenient for the staff to weld energy-absorbing structure 20 at the thick stick body 110 inner wall.

Referring to fig. 1, 2, 3 and 6, the energy absorbing structure 20 includes two energy absorbing members i 210 and ii 220 disposed on the inner wall of the bumper body 110, wherein the energy absorbing member i 210 includes an energy absorbing box 211, two energy absorbing grooves 212, a plurality of crush slots 213, four grooves 214 and a honeycomb block 215; the energy absorber II 220 comprises a buffer plate 221, a connecting plate 222, two inclined plates 223, four through holes 224 and energy absorbing rubber 225.

The design of the energy absorbing piece i 210 mainly absorbs the impact force on the front surface of the bumper body 110, and when the energy absorbing piece i is strongly impacted, the energy absorbing piece i 211 can be orderly collapsed through the design of the energy absorbing groove 212, the collapse groove 213 and the groove 214 formed on the outer wall of the energy absorbing piece i 211, so as to absorb more impact energy; the design of the honeycomb blocks 215 can increase the rigidity of the material and further improve the energy absorbing capacity, the energy absorbing boxes 211 can be made of composite armor or special energy absorbing materials so as to improve the impact resistance and the energy absorbing effect and the service life, the shapes, the numbers and the positions of the energy absorbing grooves 212, the crumple grooves 213 and the grooves 214 can be adjusted according to actual requirements so as to realize the optimal energy absorbing effect, the honeycomb blocks 215 can be made of metal or nonmetal materials, and the shapes and the sizes of the honeycomb blocks can be designed according to the actual requirements; in addition, in order to further improve the impact resistance of the protection bar 111, a reinforcing rib structure can be added between the energy-absorbing box 211 and the honeycomb block 215, and meanwhile, the shapes, the sizes and the like of the energy-absorbing box 211, the energy-absorbing groove 212, the crumple groove 213, the groove 214 and the honeycomb block 215 can be adjusted according to actual requirements so as to adapt to the requirements of different vehicle types and safety standards.

The design of the energy absorbing piece ii 220 mainly absorbs the impact force received by the oblique side face of the bumper body 110, the buffer plate 221, the connecting plate 222 and the two inclined plates 223 can be welded into a whole, a stable space is formed inside, the energy absorbing rubber 225 is convenient to install and absorb the impact force received by the bumper body 110, the two side bars 112 can be supported through the cooperation of the two inclined plates 223 and the buffer plate 221, the impact force received by the oblique side face can be better absorbed, the design of the through hole 224 is convenient for installing the energy absorbing piece i 210, and the design of the energy absorbing rubber 225 can improve the energy absorbing effect of the device.

The working principle of the energy-absorbing bumper is as follows: when an automobile is impacted, impact force is firstly transferred to the lever body 110, then is dispersed to the two energy absorbing pieces I210 and II 220 fixed on the inner wall of the lever body 110, and is orderly collapsed through the energy absorbing box 211, the stable structure formed by the buffer plate 221, the connecting plate 222 and the two inclined plates 223 is destroyed, and meanwhile, the energy absorbing effect is further improved by the honeycomb block 215 and the energy absorbing rubber 225.

It should be noted that, specific model specifications of the energy-absorbing rubber 225, the energy-absorbing box 211 and the honeycomb block 215 need to be determined by selecting a model according to actual specifications of the device, and a specific model selection calculation method adopts the prior art, so detailed descriptions are omitted.

It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An energy absorbing bumper comprising:

The main body structure (10), the main body structure (10) comprises a bar body (110) and three protection steel pipes (120), wherein the inner walls of the three protection steel pipes (120) are fixedly connected with the outer wall of the bar body (110) at equal intervals;

the energy-absorbing structure (20), energy-absorbing structure (20) include two energy-absorbing piece I (210) and energy-absorbing piece II (220), two energy-absorbing piece I (210) both ends respectively with the thick stick body (110) with energy-absorbing piece II (220) opposite face both ends fixed connection, energy-absorbing piece II (220) outer wall with thick stick body (110) inner wall fixed connection, and inside parcel energy-absorbing piece I (210) outer wall.

2. The energy-absorbing bumper of claim 1, wherein the energy-absorbing piece i (210) comprises an energy-absorbing box (211), two energy-absorbing grooves (212), a plurality of crumple grooves (213), four grooves (214) and a honeycomb block (215), two ends of the energy-absorbing box (211) are fixedly connected with opposite surfaces of the bumper body (110) and the energy-absorbing piece ii (220) respectively, two energy-absorbing grooves (212), a plurality of crumple grooves (213) and four grooves (214) are respectively formed in the outer wall, and the honeycomb block (215) is mounted inside the energy-absorbing box (211).

3. The energy-absorbing bumper of claim 2, wherein the energy-absorbing member ii (220) comprises a buffer plate (221), a connecting plate (222), two inclined plates (223), four through holes (224) and energy-absorbing rubber (225), the outer wall of the buffer plate (221) is fixedly connected with the inner wall of the bumper body (110), two inclined plates (223) are arranged at two ends of the connecting plate (222), the outer ends of the two inclined plates (223) are respectively fixedly connected with two ends of the buffer plate (221), four through holes (224) are respectively formed at two ends of the outer walls of the buffer plate (221) and the connecting plate (222), the inner wall of the through holes (224) is attached to the outer wall of the energy-absorbing box (211), and the energy-absorbing rubber (225) is filled between the buffer plate (221) and the connecting plate (222) and the two inclined plates (223).

4. An energy-absorbing bumper according to claim 3, characterized in that the bumper body (110) comprises a protective bumper (111) and two side bumpers (112), two ends of the protective bumper (111) are provided with two side bumpers (112), three protective steel pipes (120) are arranged on the outer wall at equal intervals, and the inner wall is fixedly connected with the energy-absorbing box (211) and the outer wall of the buffer plate (221).

5. The energy absorbing bumper of claim 4, wherein the main body structure (10) further comprises two frames (130), two frames (130) are respectively disposed at two ends of the inner wall of the protective bumper (111), the outer wall of the frames (130) is attached to the inner wall of the through hole (224), and the inner wall is fixedly connected with the outer wall of the energy absorbing box (211).