Energy absorption structure of automobile bumper

Abstract

The utility model discloses an automobile bumper energy absorption structure which comprises a bumper and a fixing plate used for installing the bumper, connecting assemblies are arranged between the two sides of the bumper and the fixing plate, and a plurality of energy absorption mechanisms are arranged between the connecting assemblies. The energy absorption mechanism comprises a sliding column arranged on the inner side of the bumper and a sliding sleeve arranged on the fixing plate and connected with the sliding column in a sliding mode, ratchets are evenly arranged on the outer side of the sliding column, an avoiding groove used for allowing the ratchets to move is formed in the sliding sleeve, and an elastic clamping assembly used for providing certain force to stop the ratchets from moving is arranged on the outer side of the sliding sleeve. The bumper is novel in design and simple in structure, the energy absorption effect of the bumper is effectively guaranteed, the protection capacity for vehicles and pedestrians is improved, the bumper has maintainability, and the maintenance cost of the vehicles is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile bumper energy absorption structure. Background Art

[0002] A car's bumper is a safety device that absorbs and mitigates external impact forces and protects the front and rear parts of the car. It is generally located in most areas of the front and rear of the car and has the ability to reduce injuries to drivers and passengers in high-speed collisions.

[0003] Existing car bumpers have limited energy absorption effects and are generally ineffective in protecting pedestrians. Furthermore, after being repaired, the bumpers may not meet their intended use standards and are not repairable. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that the bumper has limited energy absorption effect, has a general ability to protect pedestrians, may not meet the use standards after repair, and is not repairable, and proposes an automobile bumper energy absorption structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An energy absorbing structure for a car bumper comprises a bumper and a fixing plate for mounting the bumper, connecting components are arranged between the fixing plate and both sides of the bumper, and a plurality of energy absorbing mechanisms are arranged between the connecting components;

[0007] The energy absorption mechanism includes a sliding column arranged on the inner side of the bumper and a sliding sleeve arranged on a fixed plate and slidably connected to the sliding column. Ratchets are evenly arranged on the outer side of the sliding column, and an avoidance groove for the movement of the ratchet is arranged in the sliding sleeve. An elastic clamping component is arranged on the outer side of the sliding sleeve for preventing the movement of the ratchet under a certain force.

[0008] Preferably, the elastic clamping assembly comprises a mounting sleeve, a blocking tooth slidably mounted in the mounting sleeve and matching with the ratchet tooth, and a reset spring connected between the blocking tooth and the mounting sleeve, wherein the blocking tooth passes through the side wall of the sliding sleeve and meshes with the ratchet tooth;

[0009] When the ratchet moves into the sliding sleeve, the ratchet squeezes the blocking tooth to make it retract into the mounting sleeve until the ratchet passes through, and the reset spring pops up to drive the blocking tooth to reset.

[0010] Preferably, a crushing blade is provided on one side of the sliding column close to the sliding sleeve, and a blocking plate for blocking the crushing blade is inserted into the sliding sleeve.

[0011] More preferably, the blocking plate is made of a low-ductility material, such as hard plastic.

[0012] Preferably, the connecting assembly includes a connecting column arranged on the inner side of the bumper, and a sleeve arranged on the fixing plate and slidably connected to the connecting column, wherein the lower end of the connecting column extending out of the side wall of the sleeve is provided with a bolt and a matching locking nut.

[0013] Preferably, strip openings are provided on both sides of the sleeve along the sliding direction of the connecting column corresponding to the bolts, and a buffer spring is connected between the connecting column and the sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the energy of the impact is consumed and absorbed through the cooperation of the ratchet and the elastic clamping assembly, reducing the damage to the vehicle and the object being hit by the impact. At the same time, the blocking teeth can prevent the ratchet from resetting and rebounding to cause secondary damage, thereby improving the protection effect on pedestrians;

[0016] 2. In the utility model, through the design of the connecting assembly and the energy absorbing mechanism, when the bumper is subjected to a certain degree of impact, it can be repaired and the energy absorbing effect can be ensured after the repair, thereby reducing the maintenance cost of the bumper.

[0017] The utility model has novel design and simple structure, effectively ensures the energy absorption effect of the bumper, improves the protection capability for vehicles and pedestrians, makes the bumper maintainable, and reduces vehicle maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the appearance structure of the utility model.

[0019] Figure 2 It is a top view schematic diagram of the utility model.

[0020] Figure 3 It is a schematic diagram of the energy absorption mechanism of the utility model.

[0021] Figure 4 It is a cross-sectional view of the energy absorption mechanism of the utility model.

[0022] Figure 5 It is a schematic diagram of the connection assembly of the utility model.

[0023] Figure 6 It is a cross-sectional view of the connection component of the utility model.

[0024] In the figure: bumper 1, fixing plate 2, connecting assembly 3, connecting column 31, sleeve 32, strip opening 321, buffer spring 33, bolt 34, locking nut 341, energy absorption mechanism 4, sliding column 41, ratchet 411, breaking blade 412, sliding sleeve 42, avoidance groove 421, elastic clamping assembly 43, blocking tooth 431, mounting sleeve 432, reset spring 433, blocking plate 44. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-6 A car bumper energy absorption structure includes a bumper 1 and a fixing plate 2 for mounting the bumper 1. The bumper 1 is made of a metal profile with a hollow interior. Connecting components 3 are provided between the two sides of the bumper 1 and the fixing plate 2. A plurality of energy absorption mechanisms 4 are provided between the connecting components 3.

[0027] The energy absorption mechanism 4 includes a sliding column 41 disposed on the inner side of the bumper 1 and a sliding sleeve 42 disposed on the fixing plate 2 and slidably connected to the sliding column 41. Ratchets 411 are evenly arranged on the outer side of the sliding column 41. An avoidance groove 421 for the movement of the ratchet 411 is arranged in the sliding sleeve 42. An elastic clamping assembly 43 for blocking the movement of the ratchet 411 under a certain force is arranged on the outer side of the sliding sleeve 42. The elastic clamping assembly 43 is used to block the ratchet 411 from sliding into the sliding sleeve 42 to perform energy absorption box buffering. When the bumper 1 is impacted, the middle part collapses and moves inwards, driving the sliding column 41 to slide into the sliding sleeve 42. At this time, the elastic clamping assembly 43 cooperates with the ratchet 411 to block the sliding column 41 from sliding, consuming the impact energy. The multiple ratchets 411 cooperate with the elastic clamping assembly 43 to absorb energy, so as to reduce the damage to the vehicle and the collision object when impacted.

[0028] Based on the above technical solution, when the vehicle bumper hits an object or a person is impacted, the bumper is forced to move inward by the inward pressure, driving the sliding column 41 to move into the sliding sleeve 42, and the ratchet 411 presses the elastic snap-fit ​​assembly 43 until it can no longer block the movement of the ratchet 411. The impact energy is absorbed through the energy consumption between the ratchet 411 and the elastic snap-fit ​​assembly 41 to protect the object being hit and the vehicle itself and reduce damage.

[0029] In this technical solution, if Figure 1-4As shown, the elastic clamping assembly 43 includes a mounting sleeve 432, a blocking tooth 431 slidably mounted in the mounting sleeve 432 and matching the ratchet 411, and a reset spring 433 connected between the blocking tooth 431 and the mounting sleeve 432, wherein the blocking tooth 431 passes through the side wall of the sliding sleeve 42 and meshes with the ratchet 411; when the ratchet 411 moves into the sliding sleeve 42, the ratchet 411 squeezes the blocking tooth 431 to make it retract into the mounting sleeve 432 until the ratchet 411 passes, and the reset spring 433 pops open to drive the blocking tooth 431 to reset. When impacted, the energy of the impact is consumed by the friction between the blocking tooth 431 and the ratchet 411, and the force of the ratchet 411 squeezing the blocking tooth 431 and compressing the reset spring 433. At the same time, after the ratchet 411 moves inward and consumes the impact energy, the blocking tooth 431 blocks the ratchet 411 and prevents it from detaching, which can effectively avoid the rebound of the bumper, avoid secondary damage to pedestrians, and improve the protection effect on pedestrians.

[0030] Furthermore, through the design of the elastic clamping assembly 43, the automobile bumper has the ability to be repaired and can maintain its energy absorption capacity after repair, thereby reducing the use and maintenance costs of the automobile.

[0031] In this technical solution, if Figure 1-4 As shown, a crushing blade 412 is provided on one side of the slide post 41 close to the slide sleeve 42, and a blocking plate 44 for blocking the crushing blade is inserted in the slide sleeve 42; the blocking plate 44 is made of a low-ductility material, such as hard plastic, etc. Through the blocking of the blocking plate 44, on the one hand, it can absorb energy when subjected to a large impact, and on the other hand, it can also block the movement of the slide post 41 when subjected to a small impact, so as to avoid the small impact touching the elastic clamping assembly 43 and requiring repair, thereby ensuring the use effect of the energy absorption structure.

[0032] In this technical solution, if Figure 1-6 As shown, the connection assembly 3 includes a connection column 31 arranged on the inner side of the bumper 1, and a sleeve 32 arranged on the fixing plate 2 and slidably connected to the connection column 31, wherein the lower end of the connection column 31 extends out of the side wall of the sleeve 32 and is provided with a bolt 34 and a matching locking nut 341. The sleeve 32 has strip openings 321 on both sides corresponding to the bolts 34 along the sliding direction of the connection column 31, and a buffer spring 33 is connected between the connection column 31 and the sleeve 32. The connection assembly 3 ensures stable installation of the bumper 1, and by setting a suitable torque of the locking nut 341, when an impact occurs, the impact force on the connection column 31 is greater than the locking friction force of the locking nut 341, and drives the connection column 31 and the bolt 34 to slide in the strip opening 321, further absorbing the energy of the impact.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automobile bumper energy absorption structure, characterized in that: It comprises a bumper (1) and a fixing plate (2) for mounting the bumper (1), connecting components (3) are provided between the two sides of the bumper (1) and the fixing plate (2), and a plurality of energy absorbing mechanisms (4) are provided between the connecting components (3); The energy absorption mechanism (4) comprises a sliding column (41) arranged on the inner side of the bumper (1) and a sliding sleeve (42) arranged on the fixing plate (2) and slidably connected to the sliding column (41); ratchet teeth (411) are evenly arranged on the outer side of the sliding column (41); a avoiding groove (421) for the ratchet teeth (411) to move is arranged in the sliding sleeve (42); and an elastic clamping assembly (43) for blocking the movement of the ratchet teeth (411) under a certain force is arranged on the outer side of the sliding sleeve (42).

2. The automobile bumper energy absorption structure according to claim 1, characterized in that: The elastic clamping assembly (43) comprises a mounting sleeve (432), a blocking tooth (431) slidably mounted in the mounting sleeve (432) and matching with the ratchet tooth (411), and a return spring (433) connected between the blocking tooth (431) and the mounting sleeve (432), wherein the blocking tooth (431) passes through the side wall of the sliding sleeve (42) and meshes with the ratchet tooth (411); When the ratchet (411) moves into the sliding sleeve (42), the ratchet (411) squeezes the blocking tooth (431) to make it retract into the installation sleeve (432) until the ratchet (411) passes through, and the reset spring (433) pops open to drive the blocking tooth (431) to reset.

3. The automobile bumper energy absorption structure according to claim 1, characterized in that: A crushing blade (412) is provided on one side of the sliding column (41) close to the sliding sleeve (42), and a blocking plate (44) for blocking the crushing blade is inserted into the sliding sleeve (42).

4. The automobile bumper energy absorption structure according to claim 3, characterized in that: The blocking plate (44) is made of a low-ductility material.

5. The automobile bumper energy absorption structure according to claim 1, characterized in that: The connecting assembly (3) comprises a connecting column (31) arranged on the inner side of the bumper (1), and a sleeve (32) arranged on the fixing plate (2) and slidably connected to the connecting column (31), wherein the lower end of the connecting column (31) protrudes out of the side wall of the sleeve (32) and is provided with a bolt (34) and a matching locking nut (341).

6. The automobile bumper energy absorption structure according to claim 5, characterized in that: The sleeve (32) has strip openings (321) on both sides along the sliding direction of the connecting column (31) corresponding to the bolts (34), and a buffer spring (33) is connected between the connecting column (31) and the sleeve (32).

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