CN115891888A - A rear bumper assembly and automobile - Google Patents

Abstract

The invention provides a rear bumper assembly and an automobile, which are connected with a frame of the automobile, wherein the rear bumper assembly comprises two buffer frames connected with the tail part of the frame, two cross beams respectively welded on the two buffer frames, a longitudinal beam arranged between the two cross beams and a reinforcing frame sleeved at the joint of the two cross beams and the longitudinal beam, each buffer frame comprises a fixed plate used for connecting the cross beams and an installation part extending towards the frame direction along the fixed plate and abutted against the tail part of the frame, the longitudinal beam comprises a fixed part contacted with the cross beams on the two sides, the energy absorption function can be deformed during the vehicle collision accident through the gradual height difference design of the buffer frames, and the longitudinal force is decomposed into lateral force through the V-shaped structural design formed by the two sections of cross beams and the longitudinal beam during the collision.

Description

A rear bumper assembly and automobile

technical field

The invention relates to the technical field of automobile components, in particular to a rear bumper assembly and an automobile.

Background technique

The frame is also called the girder. The base body of the car is generally composed of two longitudinal beams and several beams, and is supported on the wheels through the suspension device, front axle, and rear axle. It has sufficient strength and rigidity to withstand the load of the car and the impact from the wheels. The frame design and structure are good or bad, the first thing you should clearly understand is the various forces that the frame will bear when the vehicle is running. If the frame is not tough in some way, even with the best suspension system, it will not be able to achieve good handling performance. The frame has to face four kinds of pressure in the actual environment. The external force that affects the rigidity of the frame usually comes from the friction of the road surface and the G value generated during acceleration and deceleration or cornering. In early cars, the engine and chassis design were not as developed as they are now, and the grip of the tires was not as good as today, so the importance of frame rigidity was not easy to be paid attention to.

The rear bumper is a beam structure installed at the rear of the car to protect the vehicle and absorb the impact energy to reduce the impact energy to the driver and passengers during the collision process of the vehicle.

In the current pickup truck shape, the rear bumper designed at the rear end is mainly composed of a main beam, two end plates and a hollow longitudinal beam welded in the middle. In order to meet the strength requirements of the trailer, the main beam is a solid beam and the end plate is a thickened end plate. , which is used to enhance the structural strength, thus ignoring the poor overall weight reduction effect of the rear bumper. At the same time, due to the increased structural strength of the rear bumper, the poor energy absorption effect of the rear bumper leads to an increase in the risk factor during accidental rear-end collisions.

Contents of the invention

Based on this, the object of the present invention is to provide a rear bumper assembly, aiming to solve the problem of poor energy absorption effect of the rear bumper in the prior art.

A rear bumper assembly proposed by the present invention is connected with the vehicle frame of the automobile. The rear bumper assembly includes two buffer frames connected to the rear of the frame, and two buffer frames respectively welded on the two buffer frames. A beam, a longitudinal beam arranged between the two beams, and a reinforcement frame sleeved at the connection between the two beams and the longitudinal beams, the buffer frame includes a fixing plate for connecting the beams and a The fixing plate extends in the direction of the vehicle frame and abuts against the tail of the vehicle frame. The installation part is provided with at least one first mounting hole for connecting the vehicle frame. The longitudinal beam includes The fixing part that is in contact with the crossbeams on both sides and the positioning flange extending along one side of the periphery of the fixing part, the second installation hole is opened on the fixing part, and the crossbeam and the longitudinal beam are enclosed to form Bracket for shock absorption.

As mentioned above, the rear bumper structure formed by the combination of buffer frame, beam, reinforcement frame and longitudinal beam can deform and absorb energy in the event of a vehicle collision through the gradual height difference design of the buffer frame during use. The V-shaped structure design composed of the longitudinal beam is convenient for decomposing the longitudinal force to the lateral force in the event of a collision, reducing the longitudinal impact load on the vehicle and the driver, protecting the driver and the vehicle, and at the same time passing through both ends of the longitudinal beam The concave V-shaped side, when the impact of the beam is large, the longitudinal beam will deform along the concave direction of the V-shaped structure on both sides of the vertical, which has the effect of reducing the impact load twice, and can also be used for energy absorption by being sleeved on the two beams. With the reinforcing frame on the longitudinal beam, and through the multiple through slots opened on the reinforcing frame, when the two beams collide with the longitudinal beam and deform, the reinforcing frame will also deform along the through slots opened on the surface, which also has certain The energy-absorbing effect improves the overall energy-absorbing quality of the rear bumper assembly, reduces accident injuries and solves the problem of poor energy-absorbing effect of the current rear bumper.

Further, the shape of the support frame is V-shaped.

Further, an assembly groove for accommodating the beam is opened on the fixing plate, and a flange is provided on a side away from the mounting part on the fixing plate.

Further, the upper and lower ends of the fixing part are inwardly recessed with V-shaped edges.

Further, the reinforcing frame includes a rear fixing plate that abuts against the two beams toward the frame, and an upper fixing plate and a lower fixing plate that are respectively fixed on both sides of the rear fixing plate and are set toward the beam. , the reinforcing frame is provided with a plurality of through slots, and the lower fixing plate and the upper fixing plate are provided with positioning holes.

Further, the shape of the rear fixation plate is a rectangular plate with two sides expanding outwards in a figure-eight shape.

Further, the rear bumper assembly also includes a tow hook assembly partially embedded in the longitudinal beam.

Further, the tow hook assembly includes a connecting beam embedded in the longitudinal beam and a right-angled frame fixedly connected to the end of the connecting beam facing away from the reinforcing frame, and the connecting beam is provided with a The second installation hole is adapted to the third installation hole, the third installation hole is penetratingly provided with a latch, and the side of the right-angle frame away from the connecting beam is fixedly connected with a ball pin.

Further, a hook is welded at the bottom end of the beam.

In addition, the present invention also provides an automobile, including a rear bumper assembly arranged on the automobile.

Description of drawings

Fig. 1 is the structural representation of rear bumper assembly in the embodiment of the present invention;

Fig. 2 is the schematic structural view of the fixed plate in the rear bumper assembly in the embodiment of the present invention;

Fig. 3 is the schematic structural view of the reinforcing frame in the rear bumper assembly in the embodiment of the present invention;

Fig. 4 is a schematic diagram of the exploded structure of the reinforcing frame in the rear bumper assembly in the embodiment of the present invention;

Fig. 5 is a structural schematic diagram of the longitudinal beam in the rear bumper assembly in the embodiment of the present invention;

Fig. 6 is a schematic structural view of the tow hook assembly in the rear bumper assembly in the embodiment of the present invention.

Description of main component symbols:

buffer frame 1 positioning hole 35 fixed plate 11 stringer 4 Mounting slot 111 fixed part 41 Installation Department 12 Second mounting hole 42 first mounting hole 121 positioning flange 43 turn over 13 Tow hook assembly 5 beam 2 right angle frame 51 reinforcement frame 3 connecting beam 52 rear plate 31 Second mounting hole 53 Upper fixed plate 32 Card latch 54 Lower fixed plate 33 ball pin 55 Through slot 34 hook up 6

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

It should be noted that when an element is referred to as being “fixed on” another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to Fig. 1 to Fig. 6, shown is the rear bumper assembly in the embodiment of the present invention, is connected with the vehicle frame of automobile, and rear bumper assembly comprises two buffer frames 1 that are connected at the vehicle frame afterbody, welded on respectively The two beams 2 on the two buffer frames 1, the longitudinal beams 4 arranged between the two beams 2, and the reinforcement frame 3 sleeved at the connection between the two beams 2 and the longitudinal beams 4, the buffer frame 1 includes a fixing frame for connecting the beams 2 Plate 11 and the mounting portion 12 that extends out along the fixed plate 11 toward the vehicle frame and abuts against the tail of the vehicle frame. The mounting portion 12 is provided with at least one first mounting hole 121 for connecting the vehicle frame. The longitudinal beam 4 includes The fixed part 41 where the crossbeams 2 on both sides contact and the positioning flange 43 extending along one peripheral edge of the fixed part 41, the second mounting hole 42 is opened on the fixed part 41, and the crossbeam 2 and the longitudinal beam 4 are enclosed to form a Impact bracket;

Further, the shape of the supporting frame is V-shaped, and the fixing plate 11 is provided with an assembly groove 111 for accommodating the crossbeam 2. On the side of the fixing plate 11 away from the mounting part 12, a flange 13 is provided, and the upper and lower ends of the fixing part 41 are There is a V-shaped edge recessed inward, and the reinforcing frame 3 includes a rear fixing plate 31 against the direction of the frame of the two beams 2 and an upper fixing plate 32 and a lower fixing plate respectively fixed on both sides of the rear fixing plate 31 facing the direction of the beam 2. Plate 33 is provided with a plurality of through grooves 34 on the reinforcing frame 3, and the lower fixed plate 33 and the upper fixed plate 32 are all provided with positioning holes 35, and the rear fixed plate 31 profile is a rectangular plate that both sides outwardly expand.

During specific implementation, the operator can place the buffer frame 1 at the designated installation position at the rear of the vehicle frame, and attach the mounting part 12 to the rear of the vehicle frame so that the first mounting hole 121 on the mounting part 12 is aligned with the vehicle frame. Corresponding to the through holes on the frame, and through the through holes on the frame through the bolts along the first mounting hole 121 to complete the connection and fixation between the buffer frame 1 and the rear of the frame. The through hole corresponding to the first mounting hole 121, and then the operator can directly insert one end of the crossbeam 2 into the fitting groove 111 provided on the buffer frame 1, and weld and fix the connection between the crossbeam 2 and the fitting groove 111. Install beams 2 on the buffer frame 1 on the left and right sides according to the above method, and then the operator can weld the longitudinal beam 4 between the two installed beams 2, and the contact part between the two beams 2 and the longitudinal beam 4 is vertical Cutting and opposite slopes, so that after the slope of the beam 2 is in contact with the longitudinal beam 4, an angle can be formed between the two beams 2 and the longitudinal beam 4, and then the operator can set the reinforcing frame 3 on the two beams 2 and 4 The joint of the longitudinal beam 4, wherein, when installing the reinforcing frame 3, the operator can insert bolts into the positioning hole 35 toward the inner longitudinal beam 4. When the reinforcing frame 3 is set at the joint between the two beams 2 and the longitudinal beam 4, the positioning hole The bolts in 35 will abut against the V-shaped groove formed by the concave V-shaped edge at the bottom of the longitudinal beam 4, so as to determine the stability of the current reinforcement frame 3 at the joint between the two cross beams 2 and the longitudinal beam 4. In some of the present invention In an optional embodiment, the operator can choose to install and fix the reinforcement frame 3 on the cross beam 2 and the longitudinal beam 4 through the bolts sequentially along the through groove 34 opened on the reinforcement frame 3 to the beam 2 and the longitudinal beam 4. The surface of the joint of the longitudinal beam 4 is fixed and installed.

Among them, the rear bumper structure formed by the combination of the buffer frame 1, the cross beam 2, the reinforcement frame 3 and the longitudinal beam 4 passes through the buffer frame 1 during use, which is the main load-bearing member connecting the automobile frame and the cross beam 2, and the cross beam The overall design of 2 is a gradual height difference design, and a flange structure is designed at the side of the gradual change to ensure the basic bearing strength of the gradual change. For example, when the rear bumper is rescued by a trailer, the bearing capacity of the buffer frame 1 makes it The gradual change is not easy to deform, and at the same time, the gradual change height difference design of the buffer frame 1 can deform and absorb energy in the event of a vehicle collision, reducing the damage to the vehicle and the driver and passengers, as well as accident maintenance and disability compensation. Then through the crossbeam 2, its design At the lower position of the gradual height difference of the buffer frame 1, while ensuring that the beam 2 meets the strength and durability requirements of the trailer, the beam 2 is designed as a two-section hollow square tube beam to the greatest extent, so as to achieve light weight and facilitate low-cost procurement. In order to consider the function of the collision beam of the rear bumper during use, the traditional straight beam is designed into two sections of beams 2 and form a V-shaped structure, which is convenient for decomposing the longitudinal force into the lateral force during a collision, reducing the impact on the vehicle and the driver. The longitudinal impact load of the personnel protects the driver and the vehicle. Then, through the design of the longitudinal beam 4, it is designed between the two sections of the beam 2 and also adopts the hollow square tube beam design. At the same time, the vertical beam 4 The two sides are designed as a concave V-shaped structure. The longitudinal beam 4 can be used to bear the lateral force generated by the beam 2 at both ends when it collides, and the bearing strength of the beam 2 is improved to a certain extent. At the same time, when the impact of the beam 2 is large, the longitudinal The beam 4 will deform along the concave direction of the V-shaped structure on both sides of the vertical, which has the effect of reducing the impact load for the second time, and further improves the quality of structural protection. , can wrap the connection between the two beams 2 and the longitudinal beam 4, improve the structural strength of the connection between the two beams 2 and the longitudinal beam 4, and also have a certain weight reduction effect through the multiple through slots 34 opened on the reinforcement frame 3, And when the two beams 2 and the longitudinal beams 4 are collided and deformed, the reinforcement frame 3 will also be deformed along the through groove 34 provided on its surface, which also has a certain energy-absorbing effect.

In addition, the rear bumper assembly also includes a tow hook assembly 5 partially embedded in the longitudinal beam 4, and the tow hook assembly 5 includes a connecting beam 52 embedded in the longitudinal beam 4 and is fixedly connected to the connecting beam 52 and is reinforced away from the connecting beam 52. The right-angled frame 51 at one end of the frame 3, the connecting beam 52 is provided with a third mounting hole 53 adapted to the second mounting hole 42, the third mounting hole 53 is provided with a latch 54, and the connecting beam 51 is far away from the connecting beam 52. One side is fixedly connected with a ball pin 55, and a hook 6 is welded at the bottom end of the beam 2.

In actual implementation, the operator can insert the connecting beam 52 on the tow hook assembly 5 into the fixed part 41 along the positioning flange 43 on the longitudinal beam 4 according to the needs of use, until the positioning flange 43 abuts against the right-angle frame 51 At the same time, the third installation hole 53 on the connecting beam 52 will correspond to the second installation hole 42 on the fixed part 41, and then insert the latch 54 along the second installation hole 42 to the third installation hole 53 and pass it out. The connection and installation of the tow hook assembly 5 and the longitudinal beam 4 is convenient and quick to install. When in use, the L-shaped design of the right-angle frame 51 makes the tow rope on the ball pin 55 welded on the force right-angle frame 51, and the right-angle frame 51 The force arm at the point of action of the ball pin 55 can be eliminated, the force on the trailer can be improved, and the durability of the lifting and towing hook assembly can be improved. In some optional embodiments of the present invention, the operator can choose to install a The hook 6 is used in conjunction with the tow hook assembly 5. In this way, the bearing capacity of the trailer can be evenly distributed on the entire rear bumper, and the structure of the rear bumper can be protected while improving the quality of the trailer.

To sum up, the rear bumper structure formed by the combination of buffer frame 1, beam 2, reinforcement frame 3, and longitudinal beam 4 can deform and absorb energy in the event of a vehicle collision through the design of the gradual height difference of buffer frame 1 during use. At the same time, through the V-shaped structure design composed of two sections of beam 2 and longitudinal beam 4, it is convenient to decompose the longitudinal force into lateral force in case of collision, reduce the longitudinal impact load on the vehicle and the driver, and protect the driver and the vehicle. At the same time, through the concave V-shaped edges at both ends of the longitudinal beam 4, when the impact of the beam 2 is large, the longitudinal beam 4 will deform along the concave direction of the V-shaped structure on both sides of the vertical, which has the effect of reducing the impact load for the second time , and for energy absorption, the reinforcement frame 3 sleeved on the two beams 2 and the longitudinal beam 4, and through the multiple through slots 34 opened on the reinforcement frame 3, can collide with the two beams 2 and the longitudinal beam 4. When the reinforcement frame 3 is opened along the through groove 34 of its surface, it will also be opened and deformed. It also has a certain energy absorption effect, improves the overall energy absorption quality of the rear bumper assembly, and reduces the accident damage. The problem of poor performance.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. The utility model provides a rear bumper assembly, with the connected to frame of car which characterized in that: rear bumper assembly is including connecting two buffer bracket, the welding respectively of frame afterbody two crossbeams on the buffer bracket, set up two longeron and cover between the crossbeam are established two the crossbeam with the reinforcing frame of longeron junction, the buffer bracket is including being used for connecting the fixed plate of crossbeam and edge the fixed plate court the frame direction extend with the installation department that the frame afterbody leaned on, seted up at least one on the installation department and be used for connecting the first mounting hole of frame, the longeron include with both sides the fixed part of crossbeam contact and edge the location turn-ups that the outer surrounding edge of fixed part one side extends, the second mounting hole has been seted up on the fixed part, the crossbeam with the longeron encloses to close and forms the support frame that is used for absorbing the impact.

2. The rear bumper assembly of claim 1, wherein: the shape of the support frame is V-shaped.

3. The rear bumper assembly of claim 1, wherein: the fixing plate is provided with an assembling groove for containing the cross beam, and one side, far away from the mounting part, of the fixing plate is provided with a flanging.

4. The rear bumper assembly of claim 1, wherein: the upper end and the lower end of the fixing part are inwards sunken to form V-shaped edges.

5. The rear bumper assembly of claim 1, wherein: the reinforcing frame comprises a rear fixing plate which abuts against two cross beams and faces the direction of the frame, and an upper fixing plate and a lower fixing plate which are fixed on two sides of the rear fixing plate and face the direction of the cross beams respectively, a plurality of through grooves are formed in the reinforcing frame, and positioning holes are formed in the lower fixing plate and the upper fixing plate.

6. The rear bumper assembly of claim 5, wherein: the shape of the rear fixing plate is a rectangular plate with two sides outwards unfolded in a splayed shape.

7. The rear bumper assembly of claim 1, wherein: the rear bumper assembly further comprises a towing hook assembly partially embedded in the longitudinal beam.

8. The rear bumper assembly of claim 1, wherein: the tow hook assembly including inlay in tie-beam and fixed connection in the longeron the tie-beam is towards keeping away from the right angle frame of reinforcement frame one end, set up on the tie-beam with the third mounting hole of second mounting hole adaptation, run through in the third mounting hole and be provided with the gim peg, keep away from on the right angle frame tie-beam one side fixedly connected with ball round pin.

9. The rear bumper assembly of claim 1, wherein: the bottom end of the cross beam is welded with a hook.

10. An automobile, characterized in that: a rear bumper assembly according to any one of claims 1 to 9 provided on said vehicle.

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