CN213083093U

CN213083093U - High rear bumper of security

Info

Publication number: CN213083093U
Application number: CN202021251766.4U
Authority: CN
Inventors: 邱岳冬
Original assignee: Jiangsu Yongcheng Automobile Parts Co ltd
Current assignee: Jiangsu Yongcheng Automobile Parts Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2021-04-30
Anticipated expiration: 2030-07-01

Abstract

The utility model discloses a high rear bumper of security, including bumper shell and web beam, the bumper shell with form a cushion chamber between the web beam, install first buffer board in the cushion chamber, the bumper shell with install the first bolster of multiunit between the first buffer board, all install first buffer spring between the first bolster of adjacent every group, first buffer board with install the second buffer board between the web beam, first buffer board with install a plurality of second bolsters between the second buffer board, the second buffer board with install a plurality of energy-absorbing gasbags between the web beam. The utility model discloses with the split type of bumper design, set up multistage shock attenuation energy-absorbing structure, buffer performance is good, and factor of safety is higher, has better protection effect to automobile body and human body.

Description

High rear bumper of security

Technical Field

The utility model relates to a high rear bumper of security belongs to auto-parts technical field.

Background

With the continuous development of the car industry and the continuous improvement of the technological content, the modern has higher and higher overall requirements on the car, the car is not only a tool for riding instead of walk, and the shape, the outer tube and the safety of the whole car are more emphasized. Nowadays, more and more safety accidents are caused by rear-end collisions of automobiles, and the design of bumpers is receiving more and more attention as one of important means for improving the safety performance of automobiles.

The bumper is usually installed at the front and rear parts of the automobile body, is a safety device with the functions of absorbing and buffering external impact force, protecting the automobile body and protecting passengers, and plays roles of protecting personal safety and protecting main parts in the automobile.

But the design of the automobile bumper among the prior art is comparatively single, connect into whole with bumper shell and web beam usually, and this kind of design takes place the rear-end collision back at the car, because bumper shell 1 and web beam link into a whole, the bumper can directly transmit the impact to the automobile body to influence the security performance of car, the buffer nature of bumper is relatively poor simultaneously, produces extrusion deformation easily, and is cracked even, and is relatively poor to people's safety protection nature, leads to the interior casualties of car easily.

Therefore, those skilled in the art have been devoted to designing a rear bumper for an automobile having high safety.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a high safety rear bumper for a vehicle, which solves the above mentioned problems in the prior art.

The purpose of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a high rear bumper of car of security, includes bumper shell and web beam, the bumper shell with form a cushion chamber between the web beam, install first buffer board in the cushion chamber, the bumper shell with install the first bolster of multiunit between the first buffer board, all install first buffer spring between the first bolster of adjacent every group, first buffer spring's both ends are fixed respectively the bumper shell with on the relative lateral wall of web beam, first buffer board with install the second buffer board between the web beam, first buffer board with install a plurality of second bolsters between the second buffer board, the second buffer board with install a plurality of energy-absorbing airbags between the web beam.

Preferably, first bolster includes first buffer block and second buffer block, first buffer block is fixed the bumper shell for on the lateral wall of first buffer block, the second buffer block is fixed first buffer block for on the lateral wall of bumper shell, first buffer block laminating with set up the recess on the lateral wall of second buffer block, the second buffer block laminating with install the lug on the lateral wall of first buffer block, the lug with the recess phase-match.

Preferably, the second bolster includes hydro-cylinder and connecting block, the hydro-cylinder is fixed first buffer block for on the lateral wall of second buffer block, the connecting block is fixed the second buffer board for on the lateral wall of first buffer board, the hydro-cylinder with install second buffer spring between the connecting block, second buffer spring's both ends are fixed respectively the hydro-cylinder with on the lateral wall that the connecting block is relative.

Preferably, a cavity is formed in the oil cylinder, a third buffer spring and a piston are installed in the cavity, one end of the third buffer spring is fixed to the inner bottom wall of the cavity, and the other end of the third buffer spring is fixedly connected with the piston.

Preferably, install the buffer beam in the second buffer spring, the one end of buffer beam runs through the hydro-cylinder, just the buffer beam extends into the one end of hydro-cylinder with piston fixed connection, the other end of buffer beam with connecting block fixed connection.

Preferably, the bumper shell the first buffer board the second buffer board with web beam's shock strength strengthens in proper order, the bumper shell protective housing of moulding plastics as an organic whole, first buffer board is the foaming layer buffer board, the second buffer board is aluminium system buffer board, web beam is the steel crossbeam.

The utility model has the advantages of:

1. the utility model discloses install first buffer board and second buffer board in the buffer cavity between bumper shell and the reinforcing beam, and install first bolster between bumper shell and first buffer board, realize the first-level shock attenuation energy-absorbing effect; a second buffer piece is arranged between the first buffer plate and the second buffer plate, so that a secondary damping and energy-absorbing effect is realized; an energy-absorbing air bag is arranged between the second buffer plate and the reinforcing cross beam, so that three-level shock absorption and energy absorption effects are realized; through setting up multistage shock attenuation energy-absorbing structure, buffer performance is good, and factor of safety is higher, has better protection effect to automobile body and human body.

2. The utility model discloses with the split type is divided in the bumper design, when receiving external impact, accessible bumper shell absorbs partly impact earlier, through energy-absorbing layer upon layer, transmits remaining impact for web beam at last, will alleviate the influence that automobile body and interior personnel received like this.

3. The utility model discloses a set up the buffer board between bumper shell and strengthening beam, the direction rigidity of buffer board from bumper shell to strengthening beam increases progressively, also is that the buffer board is close to the partial rigidity of bumper shell relatively lower, and the elastic modulus is relatively higher, takes place deformation through this part when receiving the slight collision and absorbs the collision energy, plays the cushioning effect, has protected the bumper shell, avoids receiving under the slight collision condition just directly by bumper shell deformation energy-absorbing, cause the increase of cost of maintenance; when the collision is severe, the buffer plate with relatively high rear rigidity is used for buffering and absorbing energy, so that the automobile body and passengers in the automobile can be well protected.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a cross-sectional view of a second buffer of the present invention.

In the figure: 1-bumper shell, 2-first buffer plate, 3-first buffer member, 4-second buffer member, 5-second buffer plate, 6-reinforcing beam, 7-energy-absorbing air bag, 8-first buffer block, 9-groove, 10-second buffer block, 11-lug, 12-first buffer spring, 13-oil cylinder, 14-cavity, 15-buffer rod, 16-connecting block, 17-second buffer spring, 18-piston, 19-buffer cavity and 21-third buffer spring.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-3, the rear bumper with high safety provided by this embodiment includes a bumper shell 1 and a reinforcing beam 6, a buffer cavity 19 is formed between the bumper shell 1 and the reinforcing beam 6, a first buffer plate 2 is installed in the buffer cavity 19, multiple sets of first buffer members 3 are installed between the bumper shell 1 and the first buffer plates 2, a first buffer spring 12 is installed between each set of adjacent first buffer members 3, both ends of the first buffer spring 12 are respectively fixed on the opposite side walls of the bumper shell 1 and the reinforcing beam 6, a second buffer plate 5 is installed between the first buffer plate 2 and the reinforcing beam 6, a plurality of energy-absorbing second buffer members 4 are installed between the first buffer plate 2 and the second buffer plate 5, and a plurality of airbags 7 are installed between the second buffer plate 5 and the reinforcing beam 6.

A first buffer plate 2 and a second buffer plate 5 are arranged in a buffer cavity 19 between a bumper shell 1 and a reinforcing cross beam 6, and a first buffer member 3 is arranged between the bumper shell 1 and the first buffer plate 2, so that a primary damping and energy-absorbing function is realized; a second buffer member 4 is arranged between the first buffer plate 2 and the second buffer plate 5, so that a secondary damping and energy-absorbing function is realized; an energy-absorbing air bag 7 is arranged between the second buffer plate 5 and the reinforcing cross beam 6, so that three-level shock absorption and energy absorption effects are realized; through setting up multistage shock attenuation energy-absorbing structure, buffer performance is good, and factor of safety is higher, has better protection effect to automobile body and human body.

In this embodiment, the first buffer member 3 includes a first buffer block 8 and a second buffer block 10, the first buffer block 8 is fixed on the lateral wall of the bumper housing 1 relative to the first buffer plate 2, the second buffer block 10 is fixed on the lateral wall of the bumper housing 1 relative to the first buffer plate 2, a groove 9 is provided on the lateral wall of the first buffer block 8 attached to the lateral wall of the second buffer block 10, a bump 11 is mounted on the lateral wall of the second buffer block 10 attached to the lateral wall of the first buffer block 8, and the bump 11 is matched with the groove 9.

When the rear-end collision happens, the bumper shell 1 firstly absorbs a part of the collision force, the rest energy is transmitted to the first buffering part 3, at the moment, the bumper shell 1 pushes the first buffering part 3 to move forwards towards the front of the vehicle body, the first buffering spring 12 is compressed, and the energy can be buffered and absorbed partially, when the collision force is large, the bumper shell 1 pushes the first buffering block 8 to move towards the second buffering block 10 until the groove 9 of the first buffering block 8 and the bump 11 of the second buffering block 10 are mutually embedded, and the buffering block made of rubber can further absorb energy and buffer the collision force.

In this embodiment, the second buffer member 4 includes an oil cylinder 13 and a connecting block 16, the oil cylinder 13 is fixed on the side wall of the first buffer block 8 opposite to the second buffer block 10, the connecting block 16 is fixed on the side wall of the second buffer plate 5 opposite to the first buffer plate 2, a second buffer spring 17 is installed between the oil cylinder 13 and the connecting block 16, two ends of the second buffer spring 17 are respectively fixed on the side walls of the oil cylinder 13 opposite to the connecting block 16, a cavity 14 is formed in the oil cylinder 13, a third buffer spring 21 and a piston 18 are installed in the cavity 14, one end of the third buffer spring 21 is fixed on the inner bottom wall of the cavity 14, the other end of the third buffer spring 21 is fixedly connected with the piston 18, a buffer rod 15 is installed in the second buffer spring 17, one end of the buffer rod 15 penetrates through the oil cylinder 13, and one end of the buffer rod 15 extending into the oil cylinder 13 is fixedly connected with the piston 18, and the other end of the buffer rod 15 is fixedly connected with the connecting block 16.

When the impact force cannot be completely absorbed, the first buffer member 3 pushes the first buffer plate 2 to continuously move towards the front of the vehicle body, the second buffer plate 5 is continuously pressed, at the moment, the second buffer spring 17 on the second buffer member 4 is compressed, a part of the impact force can be effectively absorbed, when the impact force is large, the buffer rod 15 between the oil cylinder 13 and the connecting block 16 moves towards the inside of the oil cylinder 13, and the piston 18 arranged in the inner cavity of the oil cylinder 13 extrudes the third buffer spring 21, so that the energy can be further absorbed.

In this embodiment, the shock resistance of bumper shell 1, first buffer board 2, second buffer board 5 and web beam 6 strengthens in proper order, and bumper shell 1 is the protective housing of moulding plastics as an organic whole, and first buffer board 2 is the foaming layer buffer board, and second buffer board 5 is aluminium system buffer board, and web beam 6 is the steel crossbeam.

The bumper is characterized in that a buffer plate is arranged between the bumper shell 1 and the reinforcing cross beam 6, the rigidity of the buffer plate is increased from the bumper shell 1 to the reinforcing cross beam 6, namely the rigidity of a part of the buffer plate close to the bumper shell 1 is relatively low, and the elastic modulus is relatively high, so that the part is deformed to absorb collision energy when the bumper is slightly collided, a buffering effect is achieved, the bumper shell 1 is protected, and the situation that the bumper shell 1 is directly deformed to absorb energy under the condition of slight collision is avoided, and the maintenance cost is increased; when the collision is severe, the buffer plate with relatively high rear rigidity is used for buffering and absorbing energy, so that the automobile body and passengers in the automobile can be well protected.

The utility model discloses a theory of operation is: when a rear-end collision event occurs, the rear vehicle generates impact force on a bumper of the front vehicle, and when the impact force is smaller, the energy is absorbed by directly deforming the bumper shell 1; when the impact force is large, the bumper shell 1 pushes the first buffer part 3 to move forward to the front of the vehicle body, the first buffer spring 12 is compressed, a part of energy can be buffered and absorbed, and the first buffer block 8 made of rubber and the second buffer block 10 are mutually embedded, so that energy can be further absorbed, and the impact force can be buffered; when the impact force is larger, the first buffer member 3 and the first buffer plate 2 cannot completely absorb the impact force, the first buffer plate 2 continues to move towards the front of the vehicle body, the second buffer plate 5 continues to be pressed, at the moment, the second buffer spring 17 on the second buffer member 4 is compressed, a part of the impact force can be effectively absorbed, the buffer rod 15 between the oil cylinder 13 and the connecting block 16 moves towards the inside of the oil cylinder 13, and the piston 18 arranged in the inner cavity of the oil cylinder 13 extrudes the third buffer spring 21, so that the energy can be further absorbed; when the impact force is large, the second buffer plate 5 continues to move in front of the frying vehicle body, the energy-absorbing air bags 7 on the reinforcing cross beam 6 are extruded, and gas is filled in the energy-absorbing air bags 7, so that energy can be further absorbed, and the impact force is relieved; with the bumper design split type, through setting up multistage shock attenuation energy-absorbing structure, shock-absorbing performance is good, and factor of safety is higher, when receiving external impact, accessible bumper shell 1 absorbs partly impact earlier, through energy-absorbing layer upon layer, transmits remaining impact for web beam 6 at last, will alleviate the influence that automobile body and interior personnel received like this, has better protection effect to automobile body and human body.

Above, only the further embodiments of the present invention are shown, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the protection scope of the present invention.

Claims

1. The utility model provides a high rear bumper of security, includes bumper shell (1) and strengthening beam (6), its characterized in that: a buffer chamber (19) is formed between the bumper shell (1) and the reinforcing beam (6), a first buffer plate (2) is arranged in the buffer cavity (19), a plurality of groups of first buffer parts (3) are arranged between the bumper shell (1) and the first buffer plate (2), a first buffer spring (12) is arranged between every two adjacent groups of first buffer parts (3), the two ends of the first buffer spring (12) are respectively fixed on the opposite side walls of the bumper shell (1) and the reinforcing beam (6), a second buffer plate (5) is arranged between the first buffer plate (2) and the reinforcing beam (6), a plurality of second buffer pieces (4) are arranged between the first buffer plate (2) and the second buffer plate (5), and a plurality of energy-absorbing air bags (7) are arranged between the second buffer plate (5) and the reinforcing cross beam (6).

2. The automobile rear bumper with high safety according to claim 1, characterized in that: first bolster (3) include first buffer block (8) and second buffer block (10), first buffer block (8) are fixed bumper shell (1) for on the lateral wall of first buffer block (2), second buffer block (10) are fixed first buffer block (2) for on the lateral wall of bumper shell (1), first buffer block (8) laminating with recess (9) have been seted up on the lateral wall of second buffer block (10), second buffer block (10) laminating with install lug (11) on the lateral wall of first buffer block (8), lug (11) with recess (9) phase-match.

3. The automobile rear bumper with high safety according to claim 2, characterized in that: second bolster (4) include hydro-cylinder (13) and connecting block (16), hydro-cylinder (13) are fixed first buffer block (8) for on the lateral wall of second buffer block (10), connecting block (16) are fixed second buffer board (5) for on the lateral wall of first buffer board (2), hydro-cylinder (13) with install second buffer spring (17) between connecting block (16), the both ends of second buffer spring (17) are fixed respectively hydro-cylinder (13) with on the relative lateral wall of connecting block (16).

4. The automobile rear bumper with high safety according to claim 3, characterized in that: a cavity (14) is formed in the oil cylinder (13), a third buffer spring (21) and a piston (18) are installed in the cavity (14), one end of the third buffer spring (21) is fixed to the inner bottom wall of the cavity (14), and the other end of the third buffer spring (21) is fixedly connected with the piston (18).

5. The automobile rear bumper with high safety according to claim 4, characterized in that: install buffer beam (15) in second buffer spring (17), the one end of buffer beam (15) is run through hydro-cylinder (13), just buffer beam (15) extend into the one end of hydro-cylinder (13) with piston (18) fixed connection, the other end of buffer beam (15) with connecting block (16) fixed connection.

6. The automobile rear bumper with high safety according to claim 1, characterized in that: bumper shell (1) first buffer board (2) second buffer board (5) with the shock strength of web beam (6) strengthens in proper order, bumper shell (1) protective housing of moulding plastics as an organic whole, first buffer board (2) are the foaming layer buffer board, second buffer board (5) are aluminium system buffer board, web beam (6) are the steel crossbeam.