Automobile bumper

Abstract

The invention relates to the technical field of automobile manufacturing, in particular to an automobile bumper which comprises a shell, a supporting plate is arranged on the inner side of the shell, a mounting plate is arranged on the inner side of the supporting plate, and the shell, the supporting plate and the mounting plate are fixedly mounted through connecting plates; the shell is connected with the supporting plate through a plurality of first vibration reduction devices, and the shell is connected with the end of the supporting plate through a buffering structure. A buffer device is connected between the supporting plate and the mounting plate; and a second damping device is arranged at the joint of the mounting plate and the vehicle body. The problems that under the oblique impact condition, the structure instability phenomenon is prone to occurring, and the degree of protection on the whole vehicle and members is poor are solved; the buffer performance of an automobile can be greatly improved, the purpose of vibration reduction is achieved, the integrity of the bumper body can be protected, and impact damage to the automobile is reduced; and the buffering performance of the automobile can be greatly improved, so that passengers are effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and particularly relates to an automobile bumper. Background Art

[0002] In recent years, with the rapid development of the automobile industry, the number of automobiles in use has been increasing continuously, and people's demand for the safety performance of automobiles has also been continuously enhanced. When an automobile collides, as the first component to come into contact with the collision object, the automobile bumper mainly bears the function of buffering and energy absorption. In the prior art, the automobile bumper of an automobile is composed of a cross beam, a cross bar, and a hollow thin-walled tube buffer assembly. The hollow thin-walled tube buffer assembly is arranged between the cross beam and the cross bar. The hollow thin-walled tube buffer assembly is generally composed of a simple-structured aluminum round tube or square tube, and a damping spring is sleeved on the hollow thin-walled tube.

[0003] For the existing automobile bumper, since only the hollow thin-walled tube and the damping spring are used for buffering, the buffering effect during an automobile collision is not good, resulting in poor overall energy absorption effect of the automobile bumper and insufficient protection for the passengers in the automobile.

[0004] The application number is CN 202421886335.3. The present invention discloses an automobile bumper assembly with an anti-collision structure, belonging to the field of automobile bumpers. An automobile bumper assembly with an anti-collision structure of the present invention includes an exterior trim panel. One side of the exterior of the exterior trim panel is provided with a support frame. Both the front and rear ends on one side of the support frame are provided with connecting frames. Both the front and rear ends between the support frame and the exterior trim panel are provided with extension blocks. The side of the extension block facing the support frame is mirror-symmetrically provided with second connecting strips. The present invention solves the problems that the existing bumper assembly has weak anti-impact ability, poor anti-collision effect, and is easy to be unable to be disassembled after being impacted. The present invention is connected and combined through an S-shaped adapter plate and a second connecting strip. While improving the connection stability, the S-shaped adapter plate and the second connecting strip can avoid bending and deformation caused by impact, and improve the anti-impact ability of the automobile bumper assembly. Summary of the Invention

[0005] Aiming at the deficiencies in the above-mentioned prior art, in order to greatly improve the energy absorption effect and enhance the protection for the passengers in the automobile, thereby solving the technical problem that the existing automobile bumper has a poor buffering effect during an automobile collision, the present invention aims to provide an automobile bumper.

[0006] To solve the above technical problems, the technical solution of the present invention is as follows: An automobile bumper includes a housing, a support plate is provided inside the housing, a mounting plate is provided inside the support plate, and the housing, the support plate and the mounting plate are fixedly installed through a connecting plate; A plurality of first damping devices are connected between the housing and the support plate, and the ends of the housing and the support plate are connected through a buffer structure; A buffer device is connected between the support plate and the mounting plate; A second damping device is provided at the connection between the mounting plate and the vehicle body.

[0007] Further, the buffer structure is a conical buffer structure.

[0008] Further, the buffer device is a plurality of X-shaped elastic members, and the X-shaped elastic members include a central block and arc-shaped fin plates, and the central block and the arc-shaped fin plates are integrally formed.

[0009] Further, the arc-shaped fin plates are respectively connected to the four corners of the central block through torsion springs.

[0010] Further, the X-shaped elastic members are made of elastic rubber material as a whole.

[0011] Further, an energy absorption device is provided in the cavity formed between the support plate and the mounting plate.

[0012] Further, the energy absorption device is a corrugated energy absorption plate; The corrugated energy absorption plate is made of polyester resin material.

[0013] Further, the first damping device includes a lower bottom plate, an upper bottom plate, a first damping spring and an elastic support cylinder; The edges of the lower bottom plate and the upper bottom plate are connected through the first damping spring, and an elastic support cylinder is arranged between adjacent first damping springs, and the elastic support cylinder is connected between the lower bottom plate and the upper bottom plate.

[0014] Further, the elastic support cylinder includes an outer cylinder, an inner cylinder and a composite filler, the inner cylinder is sleeved inside the outer cylinder, and the inner cylinder and the outer cylinder are filled with the composite filler.

[0015] Further, the second damping device is provided with an outer sleeve, a sliding rod is slidably arranged inside the outer sleeve, and the sliding rod and the outer sleeve are connected through a second damping spring; A first snap ring is tightly sleeved at the end of the sliding rod, a clamping groove is formed on the inner wall of the outer sleeve, a second snap ring is arranged in the clamping groove, and the second snap ring protrudes from the clamping groove; The outer diameter of the first snap ring is greater than the inner diameter of the second snap ring.

[0016] The characteristics of the technical solution of the present invention are as follows: the end of the outer shell is connected to the support plate through a conical buffer structure; the end of the outer shell is connected to the support plate through a number of first shock-absorbing devices; a number of X-shaped elastic members are connected between the support plate and the mounting plate, and a corrugated energy-absorbing plate is arranged in the cavity formed between the support plate and the mounting plate; a second shock-absorbing spring is arranged at the connection between the mounting plate and the vehicle body.

[0017] The beneficial effects of the present invention are:

[0018] 1) By setting the conical buffer structure, when the two ends of the outer shell are impacted, the impact force on both sides can be effectively weakened, thus solving the problem that the structure is prone to instability under the condition of oblique impact, which leads to the weakening of the overall impact resistance of the bumper and the lack of protection for the whole vehicle and its members.

[0019] 2) When the vehicle is impacted, the buffer of the support plate is realized by the deformation of the X-shaped elastic member. At the same time, the corrugated energy-absorbing plate will also deform under the impact of the external force. Under the combined action of the X-shaped elastic member and the corrugated energy-absorbing plate, the deformation of the support plate is prevented from being too large. It can not only effectively absorb the collision force and kinetic energy transmitted by the support plate, greatly improve the buffer performance of the vehicle and achieve the purpose of shock absorption, but also protect the integrity of the bumper body and reduce the impact damage to the vehicle.

[0020] 3) The buffer effect can be realized through the first shock-absorbing device and the second shock-absorbing spring, which can greatly improve the buffer performance of the vehicle and thus effectively protect the passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic diagram of the overall structure of an automobile bumper of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the first shock-absorbing device of an automobile bumper of the present invention; [[ID=,26]]

[0024] Figure 3 It is a schematic diagram of the structure of the elastic support cylinder of an automobile bumper of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the second shock-absorbing device of an automobile bumper of the present invention;

[0026] Figure 5 Schematic diagram of the X-shaped elastic member structure of an automobile bumper according to the present invention Figure 1 ;

[0027] Figure 6 Schematic diagram of the X-shaped elastic member structure of an automobile bumper according to the present invention Figure 2 ;

[0028] In the figure: 1 - outer shell, 2 - support plate, 3 - mounting plate, 4 - connecting plate, 5 - first damping device, 6 - conical buffer structure, 7 - corrugated energy-absorbing plate, 8 - X-shaped elastic member, 9 - second damping device, 51 - lower bottom plate, 52 - upper bottom plate, 53 - first damping spring, 54 - elastic support cylinder, 541 - outer cylinder, 542 - inner cylinder, 543 - composite filler, 81 - central block, 82 - arc-shaped fin, 83 - torsion spring, 91 - outer sleeve, 92 - sliding rod, 93 - second damping spring, 94 - first snap ring, 95 - second snap ring. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] Embodiment 1:

[0031] As Figures 1 to 5 shown, an automobile bumper includes an outer shell 1, a support plate 2, a mounting plate 3 and a connecting plate 4. The outer shell 1, the support plate 2 and the mounting plate 3 are fixedly installed through the connecting plate 4; the ends of the outer shell 1 and the support plate 2 are connected by a conical buffer structure 6. By providing the conical buffer structure 6, when the two ends of the outer shell are impacted, the impact force on both sides can be effectively weakened, so as to solve the problem that the structure is prone to instability under the condition of oblique impact, resulting in the reduction of the overall impact resistance of the bumper and the lack of protection for the whole vehicle and its members. The ends of the outer shell 1 and the support plate 2 are connected by a plurality of first damping devices 5. When the outer shell 1 impacts the support plate 2, the first damping devices 5 between the two can effectively weaken the impact force, playing a role in weakening the potential energy to achieve the buffer effect. A plurality of X-shaped elastic members 8 are connected between the support plate 2 and the mounting plate 3, and a corrugated energy-absorbing plate 7 is arranged in the cavity formed between the support plate 2 and the mounting plate 3.

[0032] When the vehicle is impacted, the support plate 2 is impacted under the action of an external force and deforms towards the mounting plate 3, causing the X-shaped elastic member 8 to deform to buffer the support plate 2. At the same time, the corrugated energy-absorbing plate 7 also deforms under the impact of the external force. Under the combined action of the X-shaped elastic member 8 and the corrugated energy-absorbing plate 7, the excessive deformation of the support plate 2 is avoided. It can effectively absorb the collision force and kinetic energy transmitted by the support plate 2, greatly improve the buffering performance of the vehicle, achieve the purpose of shock absorption, and protect the integrity of the bumper body and reduce the impact damage to the vehicle. The corrugated energy-absorbing plate 7 can be made of polyester resin material. A second shock-absorbing device 9 is provided at the connection between the mounting plate 3 and the vehicle body. After the mounting plate 3 is extruded and deformed, the buffer effect can be achieved through the second shock-absorbing device 9, further improving the buffering performance of the vehicle, thereby effectively protecting the passengers.

[0033] The first shock-absorbing device 5 includes a lower bottom plate 51, an upper bottom plate 52, a first shock-absorbing spring 53, and an elastic support cylinder 54. The edges of the lower bottom plate 51 and the upper bottom plate 52 are connected by the first shock-absorbing spring 53. An elastic support cylinder 54 is arranged between adjacent first shock-absorbing springs 53. The elastic support cylinder 54 is connected between the lower bottom plate 51 and the upper bottom plate 52. The entire first shock-absorbing device 5 has a simple structure, is very convenient to install and replace, has good energy-consuming ability, and due to the addition of the elastic support cylinder 54, not only the impact resistance performance is improved, but also the first shock-absorbing spring 53 is not easily damaged, has a long service life, and is highly economical.

[0034] The elastic support cylinder 54 includes an outer cylinder 541, an inner cylinder 542, and a composite filler 543. The inner cylinder 542 is sleeved inside the outer cylinder 541, and the composite filler 543 is filled between the inner cylinder 542 and the outer cylinder 541. It is not only convenient for processing and manufacturing, but also different composite fillers 543 can be filled according to actual needs.

[0035] The X-shaped elastic member 8 includes a central block 81 and arc-shaped wing plates 82. The central block 81 and the arc-shaped wing plates 82 are of an integrally formed structure and are made of elastic rubber material as a whole.

[0036] The second shock-absorbing device 9 includes an outer sleeve 91, a sliding rod 92, a second shock-absorbing spring 93, a first snap ring 94, and a second snap ring 95. The sliding rod 92 is slidably arranged inside the outer sleeve 91, and the sliding rod 92 and the outer sleeve 91 are connected by the second shock-absorbing spring 93. The first snap ring 94 is tightly sleeved on the end of the sliding rod 92. The second snap ring 95 is arranged in a card slot opened on the inner wall of the outer sleeve 91 and protrudes from the card slot. The outer diameter of the first snap ring 94 is greater than the inner diameter of the second snap ring 95, so as to limit the sliding displacement of the sliding rod and prevent the sliding rod from disengaging from the outer sleeve.

[0037] Embodiment 2:

[0038] As Figure 6As shown in the figure, the difference between the second embodiment and the first embodiment lies in the different structures of the X-shaped elastic member: in the first embodiment, the central block 81 and the arc-shaped fin 82 are integrally formed structures, while in the second embodiment, the four arc-shaped fins 82 are respectively connected to the four corners of the central block 81 through torsion springs 83, which can further improve the buffering and vibration damping effect of the X-shaped elastic member. The central block 81 is made of a rigid member, and the four arc-shaped fins are flexible members with deformable and recoverable capabilities, such as flexible steel plates.

[0039] The characteristics of the technical solution of the present invention are as follows: the end of the outer shell 1 and the support plate 2 are connected by a cone buffer structure 6; the end of the outer shell 1 and the support plate 2 are connected by a number of first vibration damping devices 5; a number of X-shaped elastic members 8 are connected between the support plate 2 and the mounting plate 3, and a wavy energy absorbing plate is arranged in the cavity formed between the support plate 2 and the mounting plate 3; a second vibration damping spring 9 is arranged at the connection between the mounting plate 3 and the vehicle body.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automobile bumper, comprising a housing (1), characterized in that: Inside the housing (1), there is a support plate (2). Inside the support plate (2), there is a mounting plate (3). The housing (1), the support plate (2), and the mounting plate (3) are fixedly installed through a connecting plate (4). Between the housing (1) and the support plate (2), they are connected by a number of first damping devices (5). The ends of the housing (1) and the support plate (2) are connected by a buffer structure. A buffer device is connected between the support plate (2) and the mounting plate (3). A second damping device (9) is provided at the connection between the mounting plate (3) and the vehicle body.

2. The automotive bumper according to claim 1, characterized in that: The buffer structure is a conical buffer structure (6).

3. A motor vehicle bumper according to claim 1, characterized in that: The buffer device is a number of X-shaped elastic members (8). The X-shaped elastic member (8) includes a central block (81) and arc-shaped fin plates (82). The central block (81) and the arc-shaped fin plates (82) are of an integrally formed structure.

4. The automotive bumper according to claim 3, characterized in that: The arc-shaped fin plates (82) are respectively connected to the four corners of the central block (81) through torsion springs (83).

5. A motor vehicle bumper according to claim 3 or 4, characterized in that: The X-shaped elastic member (8) is made of an elastic rubber material as a whole.

6. The automotive bumper according to claim 3 or 4, characterized in that: An energy absorption device is arranged in the cavity formed between the support plate (2) and the mounting plate (3).

7. The automotive bumper according to claim 6, characterized in that: The energy absorption device is a corrugated energy absorption plate (7). The corrugated energy absorption plate (7) is made of a polyester resin material.

8. The automotive bumper according to claim 1, characterized in that: The first damping device (5) includes a lower bottom plate (51), an upper bottom plate (52), a first damping spring (53), and an elastic support cylinder (54). The edges of the lower bottom plate (51) and the upper bottom plate (52) are connected by the first damping spring (53). An elastic support cylinder (54) is arranged between adjacent first damping springs (53). The elastic support cylinder (54) is connected between the lower bottom plate (51) and the upper bottom plate (52).

9. The automotive bumper according to claim 8, characterized in that: The elastic support cylinder (54) includes an outer cylinder (541), an inner cylinder (542), and a composite filler (543). The inner cylinder (542) is sleeved inside the outer cylinder (541). The composite filler (543) is filled between the inner cylinder (542) and the outer cylinder (541).

10. A motor vehicle bumper according to claim 1, characterized in that: The second damping device (9) is provided with an outer sleeve (91). A sliding rod (92) is slidably arranged inside the outer sleeve (91). The sliding rod (92) and the outer sleeve (91) are connected by a second damping spring (93). A first snap ring (94) is tightly sleeved at the end of the sliding rod (92). A card slot is formed on the inner wall of the outer sleeve (91). A second snap ring (95) is arranged in the card slot. The second snap ring (95) protrudes from the card slot. The outer diameter of the first snap ring (94) is greater than the inner diameter of the second snap ring (95).

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