Front bumper honeycomb impact absorbing structure

Abstract

The utility model discloses a front pole honeycomb type collision buffer structure belongs to the technical field of automobile parts, including the crash pole, and the buffer device fixedly connected in the rear side of crash pole, the buffer device includes stress board no.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a honeycomb collision buffer structure for front bumpers. Background Technology

[0002] The front bumper of a car serves as the first line of defense in a frontal collision. Its main function is to absorb as much impact energy as possible at the moment of impact, so as to reduce damage to the vehicle body structure and reduce injury to pedestrians.

[0003] In the existing technology, the front bumper structure of most vehicles mainly consists of an outer bumper skin and an internal metal anti-collision beam. During a collision, energy absorption mainly depends on the plastic deformation of the anti-collision beam itself, such as bending and crushing. Some designs add simple foam buffer blocks or energy-absorbing box structures on this basis in order to further improve the buffering effect.

[0004] However, this buffering method, which relies solely on the plastic deformation of the material itself, often makes it difficult to precisely control the energy absorption process and efficiency. When a collision occurs, the energy transfer path is relatively direct, lacking intermediate links that guide and dissipate energy through specific structural failures. This results in an incomplete energy absorption chain and an upper limit to the buffering effect. When facing high-speed collisions, a significant amount of impact energy will still be transferred to the vehicle's longitudinal beams and passenger compartment, posing a considerable threat to the safety of the vehicle and its occupants.

[0005] Therefore, this utility model proposes a honeycomb collision buffer structure for the front bumper to address the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of the existing front bumper honeycomb collision buffer structure, such as the difficulty in accurately controlling the energy absorption process, the upper limit of the buffering effect, and the insufficient safety protection for vehicles and occupants, this utility model aims to provide a front bumper honeycomb collision buffer structure with improved structure that can effectively solve the above problems.

[0007] This utility model provides a front bumper honeycomb collision buffer structure, including: a bumper and a buffer device fixedly connected to the rear side of the bumper. The buffer device further includes a first force-bearing plate, a first fixing plate, a second fixing plate and a honeycomb plate, and a guide plate disposed inside the buffer device. The guide plate is provided with a guide groove.

[0008] The guide plate is firmly fixed to the fixing plate and passes through the inside of the honeycomb plate, thereby forming a stable guiding reference benchmark during the collision process.

[0009] Furthermore, the first stress-bearing plate is attached to the rear surface of the anti-collision bar, and the honeycomb plate is disposed behind the first stress-bearing plate. It is slidably connected to the guide groove on the guide plate through an internal fitting structure that matches the guide groove. Through this unique structural combination, the collision force can drive the honeycomb plate to move along the limited trajectory of the guide groove, and eventually break due to the imbalance of force, thereby efficiently absorbing energy through structural failure.

[0010] Preferably, the buffer structure further includes a connecting layer, which is a flexible or tough material layer, and is fitted between the rear surface of the bumper and the front surface of the load-bearing plate. The connecting layer can effectively adhere to and block structural fragments that may be generated when the bumper is deformed by impact, preventing them from flying outward.

[0011] Preferably, the buffer device further includes a connecting rod that spans across both sides of a pre-defined breakage area on the honeycomb panel. This pre-connection method can lift and constrain the two broken parts after the honeycomb panel breaks, further preventing fragments from scattering.

[0012] Preferably, the front bumper honeycomb collision buffer structure also includes an emergency mechanism. The emergency mechanism is fixed to the bottom of the anti-collision bar in a detachable manner as a whole and is located below the buffer device. It integrates the functions of supporting and accommodating damaged parts after a collision and protecting the buffer device in the daily environment.

[0013] Preferably, as a specific implementation of the emergency response mechanism, it includes a mounting base plate, which is horizontally positioned directly below the honeycomb panel to form a basic support platform, capable of promptly catching the honeycomb panel and other loose parts that fall due to damage after a collision.

[0014] Preferably, the emergency mechanism also includes an arc-shaped plate, which is fixedly connected to the front edge of the mounting base plate and extends upward to the bottom of the crash bar to form a physical barrier to prevent rainwater and dust splashed from the ground from entering the interior of the buffer device during normal vehicle operation.

[0015] Preferably, the emergency mechanism also includes a pair of side baffles, which are fixedly connected to the left and right edges of the mounting base plate in the vertical direction, forming the side walls of the emergency mechanism. While providing lateral protection, they together with the mounting base plate form a fence structure for collecting detached parts.

[0016] Preferably, to achieve a stable connection between the emergency mechanism and the crash bar, the emergency mechanism further includes an L-shaped fixing plate and screws. One end of the L-shaped fixing plate is fixedly connected to the top of the side baffle, and the other end is connected to the corresponding position at the bottom of the crash bar through the screws. This method not only ensures the firmness of the installation, but also facilitates the disassembly of the emergency mechanism during subsequent maintenance.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model, by setting a cooperative structure of guide plate, guide groove and honeycomb plate, enables the honeycomb plate to move along a preset trajectory and break in a controlled manner when it collides, which solves the problem of the lack of a dedicated buffer mechanism and low collision energy absorption efficiency of the existing anti-collision bar. It efficiently absorbs collision kinetic energy through structural fracture, which significantly improves buffer performance and safety.

[0019] 2. This utility model solves the problem in the prior art that internal parts are easily detached or lost after a collision, leading to difficult and costly maintenance, by setting an emergency mechanism including a mounting base plate and side baffles below the buffer structure. It effectively supports and accommodates damaged and loose parts, facilitating subsequent maintenance and preventing parts from falling and causing safety hazards.

[0020] 3. This utility model solves the problem in the prior art that fragments generated by structural breakage during a collision are easily thrown outwards and may cause secondary injuries by setting a connecting layer on the rear side of the anti-collision bar and a connecting rod spanning across the honeycomb panel. It effectively confines the fragments generated by the collision inside the structure and improves the safety during the collision process. Attached Figure Description

[0021] Figure 1 This is a perspective view of the honeycomb collision buffer structure for the front bumper proposed in this utility model.

[0022] Figure 2 This is a structural exploded view of the connecting layer of the honeycomb collision buffer structure for the front bumper proposed in this utility model.

[0023] Figure 3 This is a schematic diagram of the honeycomb plate of the honeycomb collision buffer structure for the front bumper proposed in this utility model.

[0024] Figure 4 This is a structural exploded view of the buffer device of the honeycomb collision buffer structure for the front bumper proposed in this utility model.

[0025] Figure 5 This is a structural breakdown diagram of the emergency mechanism of the honeycomb collision buffer structure for the front bumper proposed in this utility model.

[0026] Legend:

[0027] 1. Anti-collision bar; 2. Buffer device; 201. Connecting layer; 202. Stress plate one; 203. Fixing plate one; 204. Fixing plate two; 205. Guide plate; 206. Honeycomb panel; 207. Connecting rod; 208. Guide groove; 3. Emergency mechanism; 301. Mounting base plate; 302. Side baffle; 303. L-shaped fixing plate; 304. Arc plate; 305. Screw. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 5 This utility model provides a honeycomb collision buffer structure for the front bumper, which aims to solve the problem that the existing anti-collision bumper 1 generally lacks a dedicated structured buffer design, resulting in low collision energy absorption efficiency and easy loss or damage of parts after collision.

[0031] like Figure 1 As shown, the honeycomb collision buffer structure includes a crash bar 1 and a buffer device 2 fixedly connected to the rear side of the crash bar 1. The crash bar 1 serves as the frontmost component of the vehicle and provides the mounting base for the entire buffer structure, while the buffer device 2 serves as a functional unit for absorbing collision energy.

[0032] Reference Figure 2 , Figure 4 and Figure 5 The buffer device 2 includes a first force-bearing plate 202, a first fixing plate 203, a second fixing plate 204, and a honeycomb plate 206. The first force-bearing plate 202 is attached to the rear surface of the anti-collision bar 1 and is used to directly bear the collision force transmitted from the anti-collision bar 1. The honeycomb plate 206 is located behind the first force-bearing plate 202 and is connected to the second fixing plate 204 through one end, serving as the energy-absorbing body.

[0033] The innovation of the buffer device 2 lies in its guide plate 205, which is firmly fixed to the fixed plate 203 to maintain positional stability during collision. The guide plate 205 passes through the interior of the honeycomb plate 206 and has a guide groove 208. The honeycomb plate 206 is slidably connected to the guide groove 208 through an internal fitting structure that matches the guide groove 208. When the entire structure is subjected to a collision force, the force is transmitted from the anti-collision bar 1 to the force-bearing plate 202 and the honeycomb plate 206 in sequence, thereby driving the honeycomb plate 206 to move along the limited trajectory of the guide groove 208 under the constraint provided by the guide plate 205. This controlled movement causes the honeycomb plate 206 to break at a preset position due to the force imbalance, efficiently absorbing and dissipating the collision kinetic energy through structural fracture.

[0034] Please refer to Figure 2 , Figure 3 and Figure 4 The buffer device 2 has a specific structural fit and connection relationship between multiple components. The buffer device 2 also includes a connecting layer 201, which is a flexible or tough material layer and is attached between the rear surface of the anti-collision bar 1 and the front surface of the force plate 202. In the early stage of the collision, the connecting layer 201 can effectively block the fragments that may be generated by the deformation of the anti-collision bar 1 from flying outward, thereby avoiding secondary damage to the surrounding environment or personnel.

[0035] Meanwhile, to ensure that the structural fragments of the honeycomb panel 206 do not scatter after being broken, the buffer device 2 also includes a connecting rod 207. The connecting rod 207 spans across both sides of the pre-set breakage area on the honeycomb panel 206 and connects the two parts of the honeycomb panel 206 that may break in advance by means of fixed connection. When the honeycomb panel 206 is broken by force, the connecting rod 207 plays the role of tensile connection, constraining the broken fragments to the vicinity of their original position.

[0036] This buffer device 2, composed of a first load-bearing plate 202, a first fixing plate 203, a second fixing plate 204, a guide plate 205, a honeycomb plate 206, a connecting rod 207, and a guide groove 208, forms a complete and efficient energy absorption chain through force transmission, controlled movement, and eventual structural fracture, ensuring that collision energy can be fully dissipated.

[0037] As a preferred embodiment, in order to support and contain damaged components after a collision and to provide daily environmental protection for the buffer device 2, the structure also includes an emergency mechanism 3, please refer to... Figure 5 The emergency mechanism 3 is fixed to the bottom of the crash bar 1 in a detachable manner and is located below the buffer device 2;

[0038] Specifically, the emergency mechanism 3 includes a mounting base plate 301, which forms the base of the emergency mechanism 3 and is horizontally positioned directly below the honeycomb panel 206. It can provide reliable support for other loose parts when the honeycomb panel 206 is damaged or falls off due to a collision.

[0039] An arc-shaped plate 304 is also fixedly connected to the front edge of the mounting base plate 301. The arc-shaped plate 304 bends upward and extends to the bottom of the anti-collision bar 1. Its main function is to prevent rainwater and dust splashed up by the vehicle during driving from entering the interior of the buffer device 2, thereby preventing the honeycomb panel 206 from becoming weak due to moisture or dust accumulation.

[0040] On the left and right sides of the mounting base plate 301, a pair of side baffles 302 are fixedly connected in the vertical direction. The side baffles 302 are used to provide lateral protection for the internal buffer device 2 and prevent the internal structure from falling off when the vehicle is involved in a side or minor collision.

[0041] To achieve stable fixation between the emergency mechanism 3 and the crash bar 1, the emergency mechanism 3 also includes an L-shaped fixing plate 303 and screws 305. One end of the L-shaped fixing plate 303 is fixedly connected to the top of the side baffle 302, while the other end is detachably connected to the bottom of the crash bar 1 via screws 305. This connection method ensures the stability of the entire emergency mechanism 3 installation.

[0042] Working principle:

[0043] When a frontal collision occurs, the bumper 1 first contacts and deforms. At this time, the connecting layer 201, which is close to the back of the bumper 1, will prevent the fragments generated by the deformation of the bumper 1 from flying outward, thus avoiding secondary injury. The collision force is then transmitted through the bumper 1 to the stress plate 202, and then the stress plate 202 acts on the honeycomb panel 206. Since the guide plate 205 is firmly fixed by the fixing plate 203, the position of the guide plate 205 remains unchanged. Therefore, the honeycomb panel 206 under force can only slide inward along the limited trajectory of the guide groove 208 on the guide plate 205. This controlled movement path causes the honeycomb panel 206 to have an unbalanced force and eventually breaks at the preset position. The porous structure of the honeycomb panel 206 absorbs a large amount of collision kinetic energy during the fracture process, thereby achieving efficient buffering.

[0044] As the honeycomb panel 206 breaks, the connecting rod 207 spanning it will lift and restrain it, preventing the broken pieces of the honeycomb panel 206 from detaching from the fixing plate 204 and flying in all directions. At the same time, the emergency mechanism 3 located below will function. The mounting base plate 301 will immediately support the damaged and falling honeycomb panel 206 and related loose parts, while the side baffles 302 on both sides will assist in blocking and containing them, preventing parts from falling onto the road surface and obstructing subsequent driving or increasing the difficulty of maintenance. In daily use, the arc-shaped plate 304 on the front of the emergency mechanism 3 can continuously block rainwater and dust for the buffer device 2, protecting the honeycomb panel 206 from environmental corrosion and ensuring that the honeycomb panel 206 can perform its expected buffering performance when needed.

Claims

1. A front bumper honeycomb collision buffer structure, including a bumper (1) and a buffer device (2) fixedly connected to the rear side of the bumper (1). The buffer device (2) includes a first force plate (202), a first fixing plate (203), a second fixing plate (204) and a honeycomb plate (206). The first force plate (202) is attached to the rear surface of the bumper (1). The honeycomb plate (206) is disposed behind the first force plate (202) and is connected to the second fixing plate (204) through one end of the first force plate (202). Its features are, The buffer device (2) further includes a guide plate (205), which is firmly fixed to the fixing plate (203) and passes through the inside of the honeycomb plate (206). The guide plate (205) has a guide groove (208), and the honeycomb plate (206) is slidably connected to the guide groove (208) through an internally provided matching structure that matches the guide groove (208). When the anti-collision bar (1) is subjected to a collision force, the force is transmitted sequentially to the first force-bearing plate (202) and the honeycomb plate (206), and drives the honeycomb plate (206) to move along the limited trajectory of the guide groove (208), thereby breaking at a preset position due to the imbalance of force, so as to absorb the collision energy.

2. The front bumper honeycomb collision buffer structure according to claim 1, characterized in that, It also includes a connecting layer (201), which is a flexible or tough material layer. The connecting layer (201) is attached between the rear surface of the anti-collision bar (1) and the front surface of the force plate (202) to prevent the fragments generated by the anti-collision bar (1) from flying outward when it deforms during a collision.

3. The front bumper honeycomb collision buffer structure according to claim 1, characterized in that, The buffer device (2) further includes a connecting rod (207), which spans across both sides of a pre-set breakage area on the honeycomb panel (206) to stretch and connect the two broken parts after the honeycomb panel (206) breaks, so as to prevent the honeycomb panel (206) from detaching and splashing.

4. The front bumper honeycomb collision buffer structure according to claim 1, characterized in that, It also includes an emergency mechanism (3), which is detachably fixed to the bottom of the crash bar (1) and located below the buffer device (2) to support and contain damaged parts after a collision and to provide daily environmental protection for the buffer device (2).

5. The front bumper honeycomb collision buffer structure according to claim 4, characterized in that, The emergency mechanism (3) includes a mounting base plate (301), which forms the base of the emergency mechanism (3). The mounting base plate (301) is horizontally positioned directly below the honeycomb panel (206) to provide support for the honeycomb panel (206) and other parts that may fall off.

6. The front bumper honeycomb collision buffer structure according to claim 5, characterized in that, The emergency mechanism (3) also includes an arc plate (304), which is fixedly connected to the front edge of the mounting base plate (301) and extends upward to the bottom of the anti-collision bar (1) to block rainwater and dust splashed during driving from entering the interior of the buffer device (2).

7. The front bumper honeycomb collision buffer structure according to claim 5, characterized in that, The emergency mechanism (3) also includes side baffles (302), which are a pair and are fixedly connected to the left and right edges of the mounting base plate (301) in the vertical direction, respectively, to prevent the internal structure from falling off when the vehicle is involved in a side or minor collision.

8. The front bumper honeycomb collision buffer structure according to claim 7, characterized in that, The emergency mechanism (3) also includes an L-shaped fixing plate (303) and screws (305). One end of the L-shaped fixing plate (303) is fixedly connected to the top of the side baffle (302), and the other end is detachably connected to the bottom of the anti-collision bar (1) through the screws (305) to ensure the stability of the connection between the emergency mechanism (3) and the anti-collision bar (1).

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