Energy absorption framework assembly of automobile rear bumper

Abstract

The utility model discloses an energy-absorbing framework assembly of an automobile rear bumper, which comprises an anti-collision beam, the anti-collision beam is mounted at the tail of an automobile, a bumper is further arranged at the tail of the automobile, the bumper is positioned on the outer side of the anti-collision beam, a first spring piece is arranged on one side, facing the bumper, of the anti-collision beam, the first spring piece protrudes towards one side of the bumper, and a second spring piece is arranged on the other side of the bumper. A plurality of second spring pieces are arranged on the side, facing the anti-collision beam, of the bumper, the second spring pieces protrude towards the side of the anti-collision beam, and the middle protruding positions of the second spring pieces abut against the convex faces of the first spring pieces. When a certain part of the bumper is impacted, the bumper is damaged and deformed, the second spring piece at the part is firstly extruded, the second spring piece absorbs impact energy while being stressed and deformed, the second spring piece is propped against the first spring piece, and the first spring piece is correspondingly stressed and deformed, so that the impact energy is absorbed by the second spring piece. And a part of impact energy is absorbed, so that two-layer buffering on the anti-collision beam and the tail part of the automobile is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile bumper, specifically is a kind of energy-absorbing framework assembly of automobile rear bumper. BACKGROUND

[0002] The automobile bumper is a safety device for absorbing and reducing external impact force and protecting the front and rear of the vehicle. Once the existing bumper deforms under force, the plastic bumper located outside the framework deforms first. After the impact object collides with the rear bumper framework, it will continue to intrude forward. At this time, since the framework inside the bumper is fixed, it will directly transfer the collision energy to the rear wall sheet metal located in front of the rear bumper framework. The plastic bumper directly contacts the framework, causing deformation and damage. When the force is too large, it is easy to cause the framework to deform, thereby increasing the difficulty of maintenance and leading to an increase in maintenance cost. SUMMARY

[0003] The utility model aims at providing a kind of energy-absorbing framework assembly of automobile rear bumper, by being arranged between bumper and crash beam first spring piece and second spring piece to absorb impact energy, two layers of buffering are carried out to crash beam and automobile rear end, the problems in the prior art are solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] An energy-absorbing framework assembly of automobile rear bumper, comprising a crash beam, the crash beam is installed at the tail of the automobile, the tail of the automobile is also provided with a bumper, the bumper is located outside the crash beam, the side of the crash beam facing the bumper is provided with a first spring piece, the first spring piece protrudes towards the side of the bumper, the side of the bumper facing the crash beam is arranged with a plurality of second spring pieces, the second spring pieces protrude towards the side of the crash beam, and the middle protruding position of the second spring pieces abuts on the convex surface of the first spring piece.

[0006] Preferably, the two sides of the first spring piece are connected with the crash beam through a group of sliding assemblies respectively, the sliding assembly comprises a first sliding block and a connecting column, the first sliding block is fixedly connected to the concave side of the first spring piece, and a first clamping sliding groove is formed in the first sliding block.

[0007] Preferably, the connecting end of the connecting column and the first sliding block is provided with an arc surface sliding plate, the arc surface sliding plate is rotationally connected with the connecting column, the arc surface sliding plate penetrates into the first clamping sliding groove, and the other end of the connecting column is fixed on the crash beam.

[0008] Preferably, the second spring piece is longitudinally arranged, and each end of the second spring piece is provided with a connecting piece, and the second spring piece is connected with the sliding piece through the connecting piece.

[0009] Preferably, the second spring piece, the connecting piece and the sliding piece are of an integrated structure.

[0010] Preferably, the two ends of the second spring sheet are installed on the bumper through a clamping block respectively, and the clamping block is provided with a first through slot and a second connecting slot.

[0011] Preferably, the connecting sheet is located in the first through slot, and the sliding sheet is located in the second connecting slot and can slide longitudinally in the second connecting slot.

[0012] Preferably, the two ends of the bumper beam are respectively provided with an installation strip, the installation strip is fixedly provided with an installation plate, the installation plate is provided with an installation hole, and the bumper beam is fixed on the tail of the automobile through the installation plate.

[0013] Preferably, the side of the installation strip towards the bumper is provided with a spring rod, one end of the spring rod is fixedly connected with the inner side wall of the bumper, and the other end of the spring rod is in contact with the installation strip through the abutting plate arranged at the end of the spring rod.

[0014] Preferably, the bumper is connected with the automobile through an impact bolt.

[0015] Compared with the prior art, the bumper of the utility model is impacted at a certain position, the bumper is damaged and deformed, and the second spring sheet at the position is firstly extruded, the second spring sheet is deformed under force and absorbs impact energy at the same time, the first spring sheet is also deformed under force and absorbs part of the impact energy when the second spring sheet is impacted, and thus two-layer buffering of the bumper beam and the tail of the automobile is realized, and the damage degree is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure isometric view of the utility model;

[0017] Figure 2 It is an overall structure plan view of the utility model;

[0018] Figure 3 It is an isometric view of the second spring sheet of the utility model;

[0019] Figure 4 It is a connection relationship diagram of the second spring sheet and the clamping block of the utility model;

[0020] Figure 5 It is an isometric view of the connecting column and the curved surface sliding plate of the utility model.

[0021] In the figure: 1, the anti-collision beam; 11, the mounting strip; 12, the mounting plate; 13, the mounting hole; 2, the bumper; 21, the spring rod; 22, the abutting plate; 3, the first spring piece; 4, the second spring piece; 41, the connecting piece; 42, the sliding piece; 5, the sliding assembly; 51, the first sliding block; 52, the connecting column; 53, the first clamping sliding groove; 54, the arc surface sliding plate; 6, the clamping block; 61, the first through groove; 62, the second connecting groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In order to solve the problem that the impact force is directly applied to the anti-collision beam and the rear end of the automobile due to the lack of energy-absorbing devices between the bumper and the anti-collision beam in the prior art, and the automobile is damaged seriously due to the lack of buffering, the following technical solutions are given. Please refer to Figures 1-5 ;

[0024] An energy-absorbing framework assembly of an automobile rear bumper includes an anti-collision beam 1, the anti-collision beam 1 is installed at the rear end of the automobile, the rear end of the automobile is further provided with a bumper 2, the bumper 2 is connected with the automobile through impact bolts, the bumper 2 is located on the outer side of the anti-collision beam 1, the side of the anti-collision beam 1 facing the bumper 2 is provided with a first spring piece 3, the first spring piece 3 protrudes to the side of the bumper 2, the side of the bumper 2 facing the anti-collision beam 1 is arranged with a plurality of second spring pieces 4, the second spring pieces 4 protrude to the side of the anti-collision beam 1, the middle protruding position of the second spring pieces 4 abuts on the convex surface of the first spring piece 3, when a part of the bumper 2 is impacted, the bumper 2 is deformed and damaged, and the second spring pieces 4 of the part are first extruded, the second spring pieces 4 are deformed under stress and absorb impact energy, since the second spring pieces 4 abut on the first spring piece 3, when the second spring pieces 4 are impacted, the first spring piece 3 is also deformed under stress and absorbs part of the impact energy, thereby buffering the anti-collision beam 1 and the rear end of the automobile.

[0025] The two sides of the first spring sheet 3 are connected with the anti-collision beam 1 through a set of sliding assemblies 5 respectively, the sliding assembly 5 comprises a first sliding block 51 and a connecting column 52, the first sliding block 51 and the connecting column 52 support the first spring sheet 3, the first sliding block 51 is fixedly connected to the concave side of the first spring sheet 3, a first clamping sliding groove 53 is formed in the first sliding block 51, the connecting end of the connecting column 52 is provided with an arc surface sliding plate 54, the arc surface sliding plate 54 is rotationally connected with the connecting column 52, the arc surface sliding plate 54 penetrates into the first clamping sliding groove 53, and the other end of the connecting column 52 is fixed on the anti-collision beam 1; when the first spring sheet 3 is deformed under force, the bending curvature of the first spring sheet 3 is reduced, the first spring sheet 3 is straightened to the two sides, the first sliding block 51 is driven to displace to the two sides, the arc surface sliding plate 54 relatively slides in the first clamping sliding groove 53, and the first spring sheet 3 can still maintain the connection with the first sliding block 51 and the connecting column 52 while being stretched.

[0026] The second spring sheet 4 is longitudinally arranged, one connecting sheet 41 is arranged at each end of the second spring sheet 4, and the second spring sheet 4 is connected with a sliding sheet 42 through the connecting sheet 41; the second spring sheet 4, the connecting sheet 41 and the sliding sheet 42 are of an integrated structure; the two ends of the second spring sheet 4 are installed on the bumper 2 through a clamping block 6 respectively, the clamping block 6 is provided with a first penetrating groove 61 and a second connecting groove 62; the connecting sheet 41 is located in the first penetrating groove 61, the sliding sheet 42 is located in the second connecting groove 62 and can longitudinally slide in the second connecting groove 62, and the second spring sheet 4 is deformed under force and stretched to the two sides, the sliding sheet 42 is driven to slide in the second connecting groove 62 through the connecting sheet 41, and the second spring sheet 4 can still maintain the connection with the inner wall of the bumper 2 while being stretched.

[0027] The two ends of the anti-collision beam 1 are respectively provided with a mounting strip 11, the mounting strip 11 is fixedly provided with a mounting plate 12, the mounting plate 12 is provided with a mounting hole 13, and the anti-collision beam 1 is fixed on the tail of the automobile through the mounting plate 12.

[0028] The side of the mounting strip 11 facing the bumper 2 is provided with a spring rod 21, one end of the spring rod 21 is fixedly connected with the inner wall of the bumper 2, the other end of the spring rod 21 is in contact with the mounting strip 11 through an abutting plate 22 arranged at the end of the spring rod 21, and the spring rod 21 is internally provided with a spring; when one end of the bumper 2 is impacted, the spring rod 21 is contracted and energy is absorbed at the same time, thereby buffering and protecting the anti-collision beam 1.

[0029] Working principle: when a part of the bumper 2 is impacted, the bumper 2 is damaged and deformed, and the second spring sheet 4 first impacted by the part is extruded, the second spring sheet 4 is deformed under force and absorbs impact energy, since the second spring sheet 4 abuts against the first spring sheet 3, when the second spring sheet 4 is impacted, the first spring sheet 3 will also be deformed under force and absorb a part of the impact energy, thereby buffering the crash beam 1 and the tail of the car.

[0030] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action without necessarily requiring or implying that there is any such relationship or order between such entities or actions. Also, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An energy absorbing beam assembly for a vehicle bumper, comprising a crash beam (1), characterized in that, The anti-collision beam (1) is installed at the tail of the automobile, and the bumper (2) is arranged outside the anti-collision beam (1), the first spring sheet (3) is arranged on the side of the anti-collision beam (1) facing the bumper (2), the first spring sheet (3) protrudes to the side of the bumper (2), a plurality of second spring sheets (4) are arranged on the side of the bumper (2) facing the anti-collision beam (1), the second spring sheet (4) protrudes to the side of the anti-collision beam (1), and the middle protruding position of the second spring sheet (4) abuts on the convex surface of the first spring sheet (3).

2. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 1, wherein, The two sides of the first spring sheet (3) are connected with the anti-collision beam (1) through a group of sliding assemblies (5), the sliding assembly (5) comprises a first sliding block (51) and a connecting column (52), the first sliding block (51) is fixedly connected to the concave side of the first spring sheet (3), and a first clamping sliding groove (53) is formed in the first sliding block (51).

3. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 2, wherein, The connecting end of the connecting column (52) and the first sliding block (51) is provided with an arc surface sliding plate (54), the arc surface sliding plate (54) is rotationally connected with the connecting column (52), the arc surface sliding plate (54) penetrates into the first clamping sliding groove (53), and the other end of the connecting column (52) is fixed on the anti-collision beam (1).

4. The energy absorbing beam assembly of claim 3, wherein: The second spring sheet (4) is arranged in a longitudinal direction, and the second spring sheet (4) is provided with a connecting sheet (41) at each end.

5. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 4, wherein, The second spring sheet (4), the connecting sheet (41) and the sliding sheet (42) are of an integrated structure.

6. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 5, wherein, The two ends of the second spring sheet (4) are installed on the bumper (2) through a clamping block (6), and the clamping block (6) is provided with a first penetrating groove (61) and a second connecting groove (62).

7. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 6, wherein, The connecting sheet (41) is located in the first penetrating groove (61), and the sliding sheet (42) is located in the second connecting groove (62) and can slide longitudinally in the second connecting groove (62).

8. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 7, wherein, The anti-collision beam (1) is provided with a mounting strip (11) at each end, the mounting strip (11) is fixedly provided with a mounting plate (12), the mounting plate (12) is provided with a mounting hole (13), and the anti-collision beam (1) is fixed on the tail of the automobile through the mounting plate (12).

9. An energy absorbing beam assembly for a rear bumper of a vehicle as defined in claim 8, wherein, The mounting strip (11) is provided with a spring rod (21) on the side facing the bumper (2), one end of the spring rod (21) is fixedly connected with the inner wall of the bumper (2), and the other end of the spring rod (21) is in contact with the mounting strip (11) through an abutting plate (22) arranged at the end thereof.

10. The energy absorbing beam assembly of claim 9, wherein: The bumper (2) is connected with the automobile through impact bolts.

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