CN116252732A - Bumper assembly and bracket assembly thereof - Google Patents

Abstract

The embodiment of the present application provides a bumper assembly, which is suitable for anti-collision of the front side or the rear side of the vehicle. The bumper assembly includes a bar body and a bracket assembly. The bar body is used to be arranged on the anti-collision beam of the vehicle, the bracket assembly is connected to the bar body, and a plurality of cavities are arranged facing the anti-collision beam. The multiple cavities can provide corresponding compression deformation and crush deformation according to the external force of the impact on the bar body. When the bar body is slightly impacted, the distance between the bar body and the buffer material on the anti-collision beam can be maintained or shortened. The distance between the bar body and the buffer material will not trigger the collision signal, and it will collapse when it is subjected to a large impact, and the distance between the bar body and the buffer material will be eliminated to trigger the collision signal. Therefore, the bumper assembly provided by the embodiment of the present application can solve the problem that the safety system of a common vehicle is easily activated due to a slight collision.

Description

Bumper assembly and its bracket assembly

technical field

The present application relates to the field of collision protection of vehicles, in particular to a bumper assembly and a bracket assembly thereof.

Background technique

In the collision of vehicles, many minor collisions do not cause immediate danger, so there is no need to activate the protection of the active safety system. However, in the collision protection design of traditional vehicles, there is no support or buffer structure between the bumper and the cushioning foam, which leads to the problem of insufficient energy absorption of the bumper during a collision, and the bumper at the front end of the vehicle is often just A slight collision will compress the cushioning foam and the pressure tube embedded in the cushioning foam, thereby triggering the collision signal, causing the active safety system of the vehicle to be activated by false triggering.

Contents of the invention

Various aspects of the present application provide a bumper assembly, which is suitable for front and/or rear collision avoidance of vehicles, and can solve the problems of insufficient energy absorption of traditional vehicle bumpers and false triggering of collision signals due to minor collisions.

An embodiment of the present application provides a bumper assembly, including a bumper body and a bracket assembly. The bar body is used to be arranged on the side of the vehicle's buffer foam facing away from the anti-collision beam, and is separated from the buffer foam by a trigger distance. The bracket assembly is connected to the side of the bar body facing the anti-collision beam, and includes a plurality of cavities. The plurality of cavities are stacked toward the anti-collision beam, and have a compressive deformation amount and a crush deformation amount, wherein the compressive deformation amount is used to maintain or shorten the trigger distance, and the crush deformation amount is used for to eliminate the trigger distance.

In some embodiments, the bracket assembly further includes a front bracket and a rear bracket, and the plurality of cavities are disposed on the rear bracket and arranged transversely and stacked towards the anti-collision beam. Wherein, the front bracket is fixed on the bar body, the rear bracket extends away from the bar body, and contacts the anti-collision beam or is separated from the anti-collision beam by a buffer distance, the The buffer distance is smaller than the trigger distance.

In some embodiments, the rear bracket further includes a plurality of ribs with a polygonal structure, and the plurality of ribs are arranged in an array on one side of the rear bracket to form a structural strengthening part, and the plurality of cavities are located in the rear bracket. The other side of the rear bracket is arranged in an array to form a structural weakening part.

In some embodiments, the rear bracket further includes a mounting portion, the structural strengthening portion is connected between the mounting portion and the structural weakening portion, and has an included angle with the mounting portion, wherein the The installation part is fixed on the front bracket, and the structural strengthening part and the structural weakening part are respectively separated from the cushioning material by a predetermined distance in the projection direction.

In some embodiments, a side of the front bracket facing the rear bracket is provided with a fixing column, and the fixing column protrudes from the side and corresponds to the installation part, wherein the installation part is on the Contacting the side in the extension direction, and detachably combined with the fixing column in the projection direction.

In some embodiments, there are multiple bracket assemblies, which are respectively arranged at two opposite ends of the bar body along the length direction of the bar body.

In some embodiments, the length of the cavity in the length direction is greater than the width in the extending direction.

In some embodiments, the bracket assembly further includes a plurality of partitions connected to each other and surrounding the plurality of compartments.

The embodiment of the present application also provides a bracket assembly, which is suitable for being arranged on the bumper body of the bumper assembly. The bracket assembly includes a front bracket and a rear bracket. The front bracket is used to be fixed on the bar body, one end of the rear bracket is connected to the front bracket, and the other end extends away from the front bracket. A plurality of cavities are provided on the rear bracket, the plurality of cavities are stacked along the extension direction of the rear bracket, and provide compression deformation and crush deformation in the extension direction, wherein the compression deformation The amount is less than the crush deformation amount.

In the embodiment of the present application, the triggering distance between the bar body and the cushioning material is maintained by the bracket assembly, which supports the bar body and increases the structural strength. Among them, the multiple cavities on the bracket assembly have different degrees of compression deformation and crush deformation, which can produce corresponding structural changes according to the force of the bumper assembly when it encounters a collision. Therefore, when the bumper assembly is slightly impacted, for example, when the bumper collides with a beam or collides with a small animal, the distance between the bumper body and the cushioning material can be kept within the range of the trigger distance without mutual contact; And when the bumper assembly is hit by the force of starting the safety system specified in the safety regulations, for example, in the event of a large impact such as a car or a pedestrian in front of the collision, the trigger distance is eliminated through the collapse of multiple cavities. At this time The lever body pushes against the cushioning material, so that the pressure tube in the cushioning material is compressed to trigger a collision signal, so as to activate the active safety system to perform corresponding safety protection procedures, such as braking and/or deploying airbags. Therefore, the bumper assembly provided by the embodiment of the present application has a variety of deformations corresponding to different collision forces through the bracket assembly, so that the bumper body is not easy to press the pressure tube on the buffer material when it encounters a slight collision, and solves the problem that common vehicles are prone to minor collisions. The problem of triggering the safety system due to a collision.

Description of drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The schematic embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of the appearance of a bumper assembly according to an embodiment of the present application.

Fig. 2 is a front view of the bumper assembly of the embodiment of the present application.

Fig. 3 is a perspective view of the bumper assembly of the embodiment of the present application.

Fig. 4 is a rear view of the bumper assembly of the embodiment of the present application.

FIG. 5 is a schematic diagram of the appearance of the bracket assembly of the embodiment of the present application.

Fig. 6 is a top view of the bracket assembly of the embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, commodity, or apparatus are also included. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

See Figures 1 through 6. The bumper assembly 100' provided by an embodiment of the present application is suitable as a part of the collision protection device 1' of the vehicle, and is arranged on the front side and/or the rear side of the vehicle. In this embodiment, the crash protection device 1' includes a bumper assembly 100' and a buffer material 200', and the bumper assembly 100' includes a bar body 10' and a bracket assembly 20', wherein the bar body 10' is arranged on the vehicle body One side of the anti-collision beam 71', and one end of the bracket assembly 20' is connected to the bar body 10', and the other end extends away from the bar body 10', for example, toward the anti-collision beam 71'. It is worth mentioning that the embodiments of the present application are suitable for collision avoidance at multiple positions at the front end of the vehicle, for example: the front and/or rear corners of the vehicle. Therefore, in some embodiments of the present application, bracket assemblies 20' are respectively connected to opposite ends of the bar body 10' in the length direction, so as to provide anti-collision effects on the left and right sides in the direction of travel of the vehicle.

The buffer material 200' is located between the bar body 10' and the anti-collision beam 71', for example: one side of the buffer material 200' abuts on the anti-collision beam 71', and the other side is separated from the bar body 10' by a trigger Distance S1. Wherein, a pressure tube 72' (for example: embedded in the buffer material 200') is also provided between the buffer material 200' and the anti-collision beam 71', and the pressure tube 72' is connected to the safety system of the vehicle, and is used for Trigger the collision signal to start the vehicle's safety system to execute the corresponding program to drive the preset protective device, such as: the rapid pop-up of the airbag, the brake of the vehicle, etc.

Wherein, the bracket assembly 20' of the bumper assembly 100' includes a plurality of cavities 201'. For example, in some embodiments of the present application, a plurality of chambers may be, but not limited to, formed by interconnecting and surrounding a plurality of partitions 202'. A plurality of cavities 201' are stacked along the extension direction of the bracket assembly 20', and are located on the side adjacent to the anti-collision beam 71' when the bumper assembly 100' is installed in the vehicle, so as to be pressed by external force in the extension direction time deformation. It should be noted that the degree of deformation of the plurality of cavities 201' can vary according to the magnitude of the impact of the external force on the bar body 10', and at least include a slight compression deformation during a slight impact and a large amount of deformation under a relatively large force impact. Deformed crush deformation amount.

When the left or right side of the bar body 10' is subjected to a slight impact, such as a slight impact event such as rubbing against a beam or colliding with a small animal, the multiple cavities 201' on the bracket assembly 20' are pressed by the bar body 10' to generate The slight deformation corresponding to the amount of compression deformation can buffer the impact force, and under the support of the bracket assembly 20 ′, the distance between the bar body 10 ′ and the buffer material 200 ′ can be maintained within the size range of the original trigger distance S1.

For example, the trigger distance S1 remains the same or is only slightly shortened, so that the bar body 10' and the cushioning material 200' can remain in a state of not touching each other (that is, when the bar body 10' is slightly impacted, the cushioning material will not be pressed. 200' inside the pressure tube 72' to trigger the collision signal). And, when the left side or the right side of the bar body 10' is hit by a car or a pedestrian with a relatively large force before the collision and the event that the active safety protection program must be activated, the multiple cavities on the bracket assembly 20' When 201' is pinched and compressed between the bar body 10' and the anti-collision beam 71 to produce a large deformation corresponding to the amount of crush deformation, the deformation range of the bracket assembly 20' increases, so that the gap between the bar body 10' and the buffer material 200' The trigger distance between S1 is eliminated.

At this time, the bar body 10' is pushed against the buffer material 200', so that the buffer material 200' pushes and presses the pressure tube 72' to trigger the collision signal, so that the safety system of the vehicle can be activated as expected to perform safety protection program. In addition, when the bracket assembly 20' and the cushioning material 200' are deformed by the bar body 10', they can also absorb part of the collision energy and reduce the impact force, so as to provide a cushioning effect through the bracket assembly 20'. Reduces damage to hit objects when colliding.

In some embodiments of the present application, the bracket assembly 20' further includes a front bracket 21' and a rear bracket 22'. The front bracket 21' can be but not limited to be fixed on the bar body 10' by means of screw lock, snap-fit or welding, etc., one end of the rear bracket 22' is detachably connected to the front bracket 21', and the other end faces away from the bar body 10' direction extension. As shown in Figure 5, the front bracket 21' is distributed with a plurality of fixing parts 212' protruding from the surface of the front bracket 21', which may be, but not limited to, welded and fused with the surface of the bar body 10'. , the front bracket 21' is fixed on the bar body 10' in a multi-point contact manner, and there is a predetermined distance between the surface of the front bracket 21' and the bar body 10'. Since the contact area between the front bracket 21' and the bar body 10' is small, when the bar body 10' is hit, the transmission of force can be slowed down, so an additional auxiliary buffering effect can be provided between the two.

In addition, the front bracket 21' may be a bent and extended plate structure, but it is not limited thereto. In some embodiments of the present application, the front bracket 21' includes a first assembly area A and a second assembly area B, and the first assembly area A corresponds to the bar body 10' when the bracket assembly 20' is combined with the bar body 10' the end. The second assembling area B is extended from one side of the first assembling area A to be fixed on other areas of the vehicle body, wherein the rear bracket 22' is combined with the first assembling area A of the front bracket 21'. The way the two are combined with each other may be, but not limited to, a plurality of outwardly protruding fixing columns 211' are provided on the side of the first assembly area A facing the rear bracket 22', and on the rear bracket 22' A plurality of corresponding installation parts 221' are provided. For example: a groove structure 2211' is provided on the mounting part 221', and the groove structure 2211' can overlap with the fixing column 221' up and down in the projection direction and be combined with the fixing column 211' in a sleeved manner, so that the mounting part 221' can lean against the side of the front bracket 22', and is firmly combined with the fixing column 211' through the fixing piece so as not to be easily detached. In practice, the positions corresponding to the fixed column 211' and the groove structure 2211' can be respectively provided with screw holes and through holes, and bolts are used to penetrate through the holes and screw locked on the screw holes, so that the rear bracket 22' is combined with the front on the first assembly area A of the bracket 21'. In this way, the first assembly area A can form anti-collision areas on the left and right sides of the front end of the vehicle through the multiple cavities 201' of the rear bracket 22'.

It is worth mentioning that, in some embodiments of the present application, the plurality of cavities 201' is in a polygonal structure on the rear support 22', and may be but not limited to be arranged laterally along the width direction of the rear support 22' . In addition, in some embodiments of the present application, a plurality of reinforcing ribs 223' with a polygonal structure are also provided on the rear support 22', wherein the plurality of cavities 201' and the plurality of reinforcing ribs 223' arranged in an array are respectively in A structural weakening portion 225 ′ and a structural strengthening portion 224 ′ are formed on the rear bracket 22 ′. For example: as shown in Figure 5, a plurality of hexagonal reinforcing ribs 223' are arranged to form a structural strengthening part 224', one side of which is connected to the mounting part 221', and has an included angle with the mounting part 221' (for example: 90-degree included angle), while the other side is connected to the structurally weakened portion 225' formed by arranging a plurality of hexagonal cavities 201'.

Moreover, in some embodiments of the present application, the length of at least a part of the plurality of cavities 201' in the length direction of the bar body 10' is greater than the width in the extension direction of the bracket assembly 20', and is elongated. shaped hexagonal structure. In addition, in this embodiment, the structurally weakened portion 225' and the structurally reinforced portion 224' are formed on the same plane, and form an L-shaped structure with the mounting portion 221'. Of course, the reinforcing rib 223' and the cavity 201' are not limited to the hexagonal shape, and in other possible embodiments, the shape may also be an octagonal or pentagonal shape, depending on the needs of users.

Through the configuration of the structural weakening part 225' and the structural strengthening part 224', the bracket assembly 20' can provide support through the structural strengthening part 224' when the rod body 10' is slightly impacted, preventing the rod body 10' from pushing against the buffer material. 200'; and when the rod body 10' is hit by a relatively large force, the structural weakening part 225' can provide a crushing effect, so that the rod body 10' can press the pressure tube 72' on the buffer material 200', so that it triggers the collision signal to Activate the vehicle's security system. Moreover, when the structurally weakened part 225' is pinched and collapsed between the rod body 10' and the anti-collision beam 71', the impact force can also be concentrated on the structurally weakened part 225' through the structurally reinforced part 224', so that It collapsed enough to trigger a crash signal to ensure safety systems were activated.

In addition, in some other embodiments of the present application, the arrangement of the rear support 22' may pass through the buffer material 200' or pass over the buffer material 200' and extend toward the anti-collision beam 71'. For example: the buffer material 200' is bent, and avoids the extension path of the rear bracket 22', so that the structural strengthening part 224' and the structural weakening part 225' of the rear bracket 22' are located above the buffer material 200' in the projection direction and There is a predetermined distance away from the buffer material 200 ′ to avoid false triggering of the collision signal in the projection direction; and the side of the structurally weakened portion 225 ′ away from the structurally reinforced portion 224 ′ corresponds to the anti-collision beam 71 ′.

Wherein, the structural weakening portion 225' may be but not limited to be in contact with the anti-collision beam 71', or be separated from the anti-collision beam 71' by a buffer distance S2. It should be noted that the buffer distance S2 can prevent the structurally weakened portion 225' from being squeezed between the bar body 10' and the anti-collision beam 71' by the vibration or shaking of the vehicle when the vehicle is not collided. Therefore, the service life of the structurally weakened portion 225' can be extended, and the collapse effect can be ensured at an appropriate time. Therefore, the buffering distance S2 is smaller than the triggering distance S1, so as to keep the structurally weakened portion 225' out of contact with the anti-collision beam 71', and not affect the normal use of the bracket assembly 20'.

In this way, when the bar body 10' is slightly impacted, the spaces of the multiple cavities 201' on the structurally weakened part 225' will be squeezed by the structurally reinforced part 224' and the anti-collision beam 71' and shrink slightly. At this time, the bracket assembly 20' can still support the original trigger distance S1 between the bar body 10' and the buffer material 200', or only cause the trigger distance S1 to be slightly shortened, so that the bar body 10' and the buffer material 200' can be kept at the same distance. state of contact. And, when the bar body 10' is hit by a relatively large force, the structural strengthening part 224' concentrates the stress on the structural weakening part 225', so that the spaces of the multiple cavities 201' are compressed and deformed, so as to eliminate the bar body 10'. The triggering distance S1 between ' and the buffer material 200' allows the bar body 10' to press the buffer material 200' to deform and press the pressure tube 72' to trigger the collision signal.

As can be seen from the above description, the present application provides a bracket assembly between the bumper body of the vehicle and the cushioning material, and through the compression deformation and crushing deformation of the bracket assembly, the bumper body can be in contact with the buffer when it encounters a slight collision. Maintain an appropriate distance between the materials to avoid triggering the collision signal due to the contact between the two, effectively solving the shortcoming that the front bumper of the general vehicle is easy to trigger the signal when it is slightly hit. In addition, under the collision force corresponding to the operation of the safety system, through the collapse and deformation of the multiple cavities of the bracket assembly, the bar body contacts the buffer material to trigger a collision signal to activate the protection device.

The above descriptions are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims (11)

1. A bumper assembly, comprising:

the bumper body is arranged on one side of the buffer foam of the vehicle, which is opposite to the anti-collision beam, and is separated from the buffer foam by a triggering distance; and

the support assembly is connected to one side of the bumper body, which faces the anti-collision beam, and comprises a plurality of cavities, which are stacked in the direction of the anti-collision beam, and the support assembly is provided with a compression deformation amount and a crumple deformation amount, wherein the compression deformation amount is used for maintaining or shortening the triggering distance, and the crumple deformation amount is used for eliminating the triggering distance.

2. The bumper assembly of claim 1, wherein the bracket assembly further comprises a front bracket and a rear bracket, the plurality of cavities being laterally aligned on the rear bracket and oriented toward the impact Liang Cengdie, wherein the front bracket is secured to the bumper body and the rear bracket extends away from the bumper body and contacts or is spaced from the impact beam by a buffer distance that is less than the trigger distance.

3. The bumper assembly of claim 2, wherein the rear bracket further comprises a plurality of ribs having a polygonal configuration, the plurality of ribs being arrayed as structural reinforcements on one side of the rear bracket, the plurality of cavities being arrayed as structural weaknesses on the other side of the rear bracket.

4. The bumper assembly of claim 3, wherein the rear bracket further comprises a mounting portion, the structural reinforcement portion being connected between the mounting portion and the structural weakness portion and having an included angle with the mounting portion, wherein the mounting portion is secured to the front bracket, and wherein the structural reinforcement portion and the structural weakness portion are each spaced a predetermined distance from the cushioning material in a projection direction.

5. The bumper assembly according to claim 4, wherein a side of the front bracket facing the rear bracket is provided with a fixing post protruding from the side and corresponding to the mounting portion, wherein the mounting portion is in contact with the side in the extending direction and detachably coupled to the fixing post in the projecting direction.

6. The bumper assembly of claim 1, wherein the plurality of bracket assemblies are disposed at opposite ends of the bumper body in a longitudinal direction of the bumper body.

7. The bumper assembly of claim 6, wherein a length of the cavity in the length direction is greater than a width in the extension direction.

8. The bumper assembly of claim 1, wherein the bracket assembly further comprises a plurality of baffles interconnected and surrounding the plurality of compartments.

9. A bracket assembly adapted to be disposed on a bumper body of a bumper assembly, the bracket assembly comprising:

the front bracket is used for being fixed on the lever body; and

the rear bracket, one end connect in the front bracket, the other end is kept away from the direction of front bracket extends, be provided with a plurality of cavitys on the rear bracket, a plurality of cavitys are followed the extension direction range upon range of the rear bracket, and provide compression deformation volume and the crumple deformation volume in the extension direction, wherein compression deformation volume is less than the crumple deformation volume.

10. The bracket assembly of claim 9, wherein the rear bracket further comprises a plurality of ribs having a polygonal configuration, the plurality of ribs being arrayed as structural reinforcements on one side of the rear bracket and the plurality of cavities being arrayed as structural weaknesses on the other side of the rear bracket.

11. The bracket assembly of claim 10, wherein the rear bracket further comprises a mounting portion, the structural reinforcement portion is connected between the mounting portion and the structural weakness portion and has an included angle with the mounting portion, wherein a side surface of the front bracket facing the rear bracket is provided with a fixing post protruding from the side surface in the extending direction and corresponding to the mounting portion in the projection direction, and the mounting portion contacts the side surface and is detachably coupled to the fixing post.

Images