CN209757028U

CN209757028U - Rear bumper

Info

Publication number: CN209757028U
Application number: CN201822273537.1U
Authority: CN
Inventors: 郑曙民
Original assignee: CHANGZHOU SHENBA AUTO ACCESSORIES Co Ltd
Current assignee: CHANGZHOU SHENBA AUTO ACCESSORIES Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2019-12-10
Anticipated expiration: 2028-12-29

Abstract

The utility model relates to a rear bumper, which comprises a bumper body and an installation beam, wherein the bumper body is connected with the installation beam through a plurality of hollow columns, both the opposite ends of the hollow columns are provided with flanges, the middle parts of the hollow columns are provided with continuous bends, and the bent bending lines are along the circumferential direction of the hollow columns; still be equipped with a plurality of buffer blocks between bumper body and the installation roof beam, the buffer block sets up on the bumper body and sets up with hollow post is crisscross. The utility model has the characteristics of structural design is reasonable, and anti striking ability and antitorque ability are strong.

Description

Rear bumper

Technical Field

the utility model belongs to the technical field of the auto parts, concretely relates to rear bumper.

Background

The automobile bumper is a safety device for absorbing and relieving external impact force and protecting the front part and the rear part of an automobile body, a device for buffering the automobile or a driver when the automobile or the driver is subjected to collision stress, the automobile bumper (an anti-collision beam) is positioned in most areas in front of and behind the automobile, the automobile bumper is designed to avoid the influence of the external damage of the automobile on a vehicle safety system, and the automobile bumper (the anti-collision beam) has the capability of reducing the injury of drivers and passengers during high-speed collision and is designed for pedestrian protection more and more at present.

The traditional automobile bumper usually achieves the purposes of impact resistance and shock absorption through a plurality of rigid shock absorption springs, however, the shock absorption structure has poor impact resistance and is easy to damage, the life safety of an automobile internal structure and a driver cannot be guaranteed, and meanwhile, the existing bumper has insufficient torsion resistance.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a rear bumper which has reasonable structural design and effectively improves the anti-impact capability and the anti-torsion capability.

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

A rear bumper comprises a bumper body and a mounting beam, wherein the bumper body is connected with the mounting beam through a plurality of hollow columns, flanges are arranged at two opposite ends of each hollow column, continuous bends are formed in the middle of each hollow column, and the bent bending lines are along the circumferential direction of the hollow columns; still be equipped with a plurality of buffer blocks between bumper body and the installation roof beam, the buffer block sets up on the bumper body and sets up with hollow post is crisscross.

Further, the hollow column is an aluminum alloy pipe.

Furthermore, the flanging of the hollow column is fixedly connected with the bumper body and the mounting beam through bolts.

Furthermore, a buffer rod is arranged in the hollow column, a connecting hole for mounting the buffer rod is formed in the mounting beam, and part of the buffer rod is arranged outside the connecting hole; the buffer rod is arranged between one end in the connecting hole and the hole bottom of the connecting hole and is connected through a pressure spring.

Furthermore, the number of the pressure springs is three, and the included angle between every two pressure springs in the three pressure springs is 120 degrees.

Furthermore, a gap is formed between the end face of one end, located outside the connecting hole, of the buffer rod and the bumper body.

Furthermore, the mounting beam is provided with a limiting sleeve sleeved on the buffer rod, the surface of the buffer rod is provided with a limiting bulge in the connecting hole, and the top surface of the limiting bulge is abutted against the bottom surface of the limiting sleeve.

Compared with the prior art, the beneficial effects of the utility model reside in that: (1) the utility model discloses a buffer block can be preferred to offset partly impact energy, then can offset partly impact energy again through continuous bending on the hollow post, continues to offset impact energy through the buffer beam at last, can reduce the vibrations energy at the at utmost through the cubic energy-absorbing like this, has improved anti impact ability and antitorque ability effectively to can protect driver and passenger's personal safety.

(2) The utility model discloses a hollow post is aluminum alloy tube, sound construction.

(3) The utility model discloses a buffer beam can support the bumper body, and the pressure spring can offset partial striking at the in-process of shrink can to reduce the vibrations energy of car, improved the anti striking ability and the antitorque ability of bumper beam, thereby the personal safety of protection driver and crew.

(4) The utility model discloses a three pressure spring, and the contained angle between per two pressure springs is 120, and this three pressure spring carries out the energy-absorbing simultaneously, has improved the energy-absorbing effect greatly, has improved the security.

(5) The utility model discloses a stop collar can guarantee that the buffer beam moves in the axial, prevents that its atress from taking place to twist reverse and unable energy-absorbing.

Drawings

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

In the attached drawing, a bumper body 1, an installation beam 2, a connecting hole 21, a buffer block 3, a hollow column 4, a flanging 41, a bend 42, a buffer rod 5, a pressure spring 6, a limiting sleeve 7 and a limiting bulge 8.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

a rear bumper includes a bumper body 1 and a mounting beam 2.

Be equipped with a plurality of buffer blocks 3 between bumper body 1 and the installation roof beam 2, link to each other through a plurality of hollow post 4 again between bumper body 1 and the installation roof beam 2, in this embodiment, the quantity of buffer block 3 is three, and the quantity of hollow post 4 is two. The buffer blocks 3 are arranged on the bumper body 1 and are staggered with the hollow columns 4. The hollow column 4 in this embodiment is preferably an aluminium alloy tube. The opposite two ends of the hollow column 4 are respectively provided with a flange 41, and the flanges 41 of the hollow column 4 are fixedly connected with the bumper body 1 and the mounting beam 2 through bolts. The middle part of hollow column 4 is formed with consecutive bending 42, and the bend line of bending 42 is along the circumferencial direction of hollow column, and like this, in the collision, the bending 42 on hollow column 4 can in time absorb energy and buckle, offsets the energy of striking fast.

Be equipped with buffer beam 5 in the hollow column 4, be equipped with the connecting hole 21 that is used for installing buffer beam 5 on the installation roof beam 2, partial buffer beam 5 sets up in the outside of connecting hole 21, and buffer beam 5 is located and is equipped with the clearance between the terminal surface of the outside one end of connecting hole 21 and bumper body 1, like this when hollow column 4 can not offset whole impact energy, can continue to offset impact energy through buffer beam 5. The buffer rods 5 are arranged between one end of each connecting hole 21 and the bottom of each connecting hole 21 and connected through the corresponding compression spring 6, the number of the compression springs 6 is three, and the included angle between every two compression springs 6 in the three compression springs 6 is 120 degrees.

The mounting beam 2 is provided with a limiting sleeve 7 sleeved on the buffer rod 5, the surface of the buffer rod 5 is provided with a limiting bulge 8 positioned in the connecting hole 21, and the top surface of the limiting bulge 8 is abutted against the bottom surface of the limiting sleeve 7.

The utility model discloses the structure that has set up the three-section energy dissipation offsets the striking energy to can guarantee driver and crew's personal safety to the at utmost, for example, the buffer block is the first stage energy dissipation, and hollow column is the energy dissipation of second stage, and the buffering is the energy dissipation of final stage. It should be noted that the bumper is directly connected to the bumper body and the mounting beam, so that the bumper is always in an energy-dissipating state during a collision.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A rear bumper, characterized in that: the bumper comprises a bumper body and a mounting beam, wherein the bumper body is connected with the mounting beam through a plurality of hollow columns, flanges are arranged at two opposite ends of each hollow column, continuous bends are formed in the middle of each hollow column, and the bent bending lines are along the circumferential direction of the hollow columns; still be equipped with a plurality of buffer blocks between bumper body and the installation roof beam, the buffer block sets up on the bumper body and sets up with hollow post is crisscross.

2. A rear bumper according to claim 1, characterized in that: the hollow column is an aluminum alloy pipe.

3. A rear bumper according to claim 1, characterized in that: the flanging of the hollow column is fixedly connected with the bumper body and the mounting beam through bolts.

4. A rear bumper according to claim 1, characterized in that: a buffer rod is arranged in the hollow column, a connecting hole for mounting the buffer rod is formed in the mounting beam, and part of the buffer rod is arranged outside the connecting hole; the buffer rod is arranged between one end in the connecting hole and the hole bottom of the connecting hole and is connected through a pressure spring.

5. A rear bumper according to claim 4, characterized in that: the number of the pressure springs is three, and the included angle between every two pressure springs in the three pressure springs is 120 degrees.

6. A rear bumper according to claim 4, characterized in that: a gap is arranged between the end face of one end, located outside the connecting hole, of the buffer rod and the bumper body.

7. A rear bumper according to claim 4, characterized in that: the mounting beam is provided with a limiting sleeve sleeved on the buffer rod, the surface of the buffer rod is provided with a limiting bulge in the connecting hole, and the top surface of the limiting bulge is abutted against the bottom surface of the limiting sleeve.