A kind of automobile bumper convenient to disassemble and replace

Abstract

The application discloses a car bumper convenient to disassemble and replace, which comprises a mounting plate, a channel steel, a reinforcing plate, a plastic shell, a limiting plate, a limiting block, a movable plate, a first connecting rod, a second connecting rod, a buffer plate, an opening, a bolt, a nut, a fixing block, a steel plate, a screw rod, an energy-absorbing material, a first connecting plate, a sleeve pipe, a movable rod, a sealing plug, a second connecting plate, a rotating shaft, a handle, a spline shaft, a circular hole, a split part, a groove, a clamping hook, a threaded rod, a spline sleeve and a long hole. The application has the advantages that the mounting plate is adopted to stably install the car bumper, the limiting plate is used to realize quick connection, the built-in rotating shaft and the cooperation of the spline shaft and the spline sleeve are utilized to realize quick fixing, the disassembly and assembly convenience of the car bumper is improved, the buffer capacity of the side impact of the bumper is improved, and the effective protection function can be achieved when the car bumper is impacted from the front or the side.

Description

TECHNICAL FIELD

[0001] The application relates to a car bumper convenient to disassemble and replace, in particular to a car bumper convenient to disassemble and replace, and belongs to the technical field of car bumper applications. BACKGROUND

[0002] The car bumper is a safety device for absorbing and reducing external impact force and protecting the front and rear parts of a car body. Many years ago, the front and rear bumpers of a car were made of steel plates which were punched into channel steels and riveted or welded with the longitudinal beams of the frame, and had a large gap with the car body, and looked very unattractive. With the development of the automobile industry and the large application of engineering plastics in the automobile industry, the car bumper as an important safety device has also entered the road of innovation. Today's front and rear bumpers of a car not only maintain the original protection function, but also pursue the harmony and unity with the car body shape and the lightweight of the bumper itself. The front and rear bumpers of a car are made of plastics, and are called plastic bumpers. The plastic bumper of a general car is composed of an outer plate, a buffer material and a cross beam. The outer plate and the buffer material are made of plastics, and the cross beam is made of a U-shaped groove punched from a cold-rolled sheet. The outer plate and the buffer material are attached to the cross beam. The car bumper (anti-collision beam) is located in most of the front and rear areas of the car, and is designed to avoid the influence of the damage of the outer part of the car on the safety system of the car. They have the ability to reduce the injury of the driver and passenger at high-speed impact. Now, more and more are designed for pedestrian protection. The cross beam of the car bumper is connected with the longitudinal beam of the frame by screws and can be disassembled at any time. The plastic used in the plastic bumper is generally made of two kinds of materials, namely, polyester and polypropylene. The plastic bumper is made by injection molding. There is also a kind of plastic called polycarbonate alloy in foreign countries. The alloy injection molding method is used to process the bumper which not only has high strength and rigidity, but also has the advantage of being weldable, and has good coating performance. The use of the plastic bumper on the car is increasing. The plastic bumper has strength, rigidity and decorative properties. From the safety point of view, the bumper can play a buffering role when the car collides, and protect the front and rear car bodies. From the appearance point of view, the bumper can be naturally combined with the car body as a whole, and has good decorative properties, and becomes an important part of decorating the outer shape of the car.

[0003] In the patent document "CN201921961661.5 A kind of automobile bumper convenient to disassemble", it is connected by setting fastening bolt, stiffened plate, reinforcing top plate, clamping base, connecting column and sliding slot, can be clamped in the outer wall of stiffened plate, simultaneously the inner wall of reinforcing top plate is connected with stiffened plate, by fastening bolt, can be tightened, the layered disassembly assembly of device can be implemented, energy-absorbing box, buffer spring, second telescopic rod, buffer foam layer, various buffering measures, can minimize the damage caused by collision, protect the life safety of people in the car, but the disassembly of automobile bumper is inconvenient, often in order to guarantee the integrity of automobile appearance, need to set the connecting part in the bumper, so that the disassembly of bumper is inconvenient, it is also difficult to install stably, bring inconvenience to automobile assembly maintenance, while the traditional bumper is only protected by the crossbeam of steel material, and the plastic shell and the buffer material are difficult to effectively buffer, and the safety of people in the car cannot be guaranteed when a larger impact is received, the practicality of bumper is reduced.There is no automobile bumper with reasonable and reliable structure, convenient disassembly function and improved bumper buffering performance of convenient disassembly and replacement. SUMMARY

[0004] In order to solve the problems of the prior art, the installation plate is used to stably install the automobile bumper, the limiting plate is arranged to realize quick connection, the plastic shell is clamped on the surface of the reinforcing plate to realize the overall appearance of the front and rear bumpers of the automobile, and the built-in shaft, spline shaft and spline sleeve are matched to realize quick fixing, so as to improve the disassembly convenience of the automobile bumper.

[0005] Further, in order to solve the problems in the prior art: the plastic shell can also play a buffering protection function, the structure strength of the plastic shell is ensured by cooperating with the reinforcing plate, the buffering protection effect is realized by cooperating with the energy-absorbing material and the connecting plate, the safety of the driver and passenger is ensured when the impact is large, and the practicality of the bumper is improved.

[0006] Further, in order to solve the problems in the prior art: the buffering capacity of the side impact of the bumper can be improved, the automobile bumper can play an effective protection function when being impacted from the front or side, the buffering and energy-absorbing effect is realized by cooperating the movable plate and the connecting rod, the good protection effect is still realized when the impact is small, the use performance of the bumper is improved, and the safety of the driver and passenger is improved.

[0007] In order to solve the problems in the prior art, the application provides a car bumper convenient to disassemble and replace, which comprises a mounting plate and a bumper body fixedly connected with a car body, and the bumper body is composed of channel steel, steel plate, reinforcing plate and plastic shell; wherein the mounting plate is located between the channel steel, the channel steel is slidably connected with a movable plate inside, the movable plate is rotatably connected with a first connecting rod and a second connecting rod at two ends respectively, the first connecting rod is rotatably connected with a buffer plate at the other end, and the buffer plate is arranged on the surface of the reinforcing plate, the reinforcing plate is connected with the plastic shell, the middle part of the channel steel is screwedly connected with a threaded rod, the threaded rod is fixedly connected with a spline sleeve at the end, the surface of the threaded rod is movably sleeved with a limiting plate, and the end of the limiting plate is fixedly connected with a limiting block, a long hole is formed in the bottom of the channel steel, and the limiting block is embeddedly connected with the long hole inside.

[0008] Further, the number of the channel steel is two, the mounting plate is arranged between the two channel steels, the mounting plate is embeddedly and screwedly connected with the channel steel and extends to the bottom of the mounting plate, the width of the mounting plate is the same as that of the limiting plate, and the mounting plate is connected with the bottom surface of the channel steel.

[0009] Further, the plastic shell is embeddedly connected with the reinforcing plate, hooks are arranged at two ends of the plastic shell, the hooks are clamped with the channel steel at two ends, split pieces are arranged at two sides of the plastic shell, the split pieces are split-connected with the frames of the car at two sides to ensure the overall appearance of the car, and grooves are formed in the top of the split pieces.

[0010] Further, two movable plates are symmetrically arranged inside the channel steel, the movable plates are provided with the first connecting rod and the second connecting rod which are arranged in an inclined manner at two ends respectively, and the first connecting rod and the second connecting rod are located inside the long hole.

[0011] Further, two buffer plates are symmetrically arranged inside the reinforcing plate, the buffer plates are in an arc-shaped structure and are located at two sides of the bumper, the buffer plates are connected with the channel steel and the reinforcing plate in a pasting manner at two ends respectively, a fixing block is screwedly connected with the surface of the reinforcing plate, a plurality of openings are formed at two ends of the buffer plate, and the openings are embeddedly connected with the fixing block in a T-shaped structure.

[0012] Further, the mounting plate is inserted through the middle part of the steel plate, the steel plate is fixedly connected with the channel steel, the steel plate is inserted through the screw rod around the edges, the screw rod is screwedly connected with the car body, the steel plate and the channel steel are inserted through the bolt, one end of the bolt is screwedly connected with a nut, and the other end of the bolt is embeddedly connected with the opening inside the buffer plate at the top.

[0013] Further, a plurality of energy-absorbing materials are arranged between the reinforcing plate and the first connecting plate, the first connecting plate is fixedly connected with the reinforcing plate through a sleeve, the sleeve is provided with a plurality of sleeves, the sleeves are uniformly distributed around the first connecting plate, the sleeves are in sliding connection with the movable rods, the movable rods are fixedly connected with the sealing plugs, the sealing plugs are in sealing connection with the interiors of the sleeves, and the sealing plugs and the interiors of the sleeves form cavities.

[0014] Further, the first connecting plate and the second connecting plate are in movable connection with the rotating shafts, the rotating shafts are fixedly connected with the handles and the spline shafts at two ends, and the spline shafts are in embedded connection with the interiors of the spline sleeves.

[0015] Further, a circular hole is arranged in the middle of the reinforcing plate, the circular hole is in embedded connection with the handle, the handle is in close connection with the inner wall of the plastic shell, and the plastic shell and the reinforcing plate are provided with through holes for mounting the automobile lamps on two sides.

[0016] Further, the mounting plate penetrates through the middle of the steel plate, the limiting plate at the bottom of the mounting plate is provided with two symmetrically distributed limiting blocks, the length of the limiting plate is the same as the distance between the two channel steels, the limiting plate is in close connection with the bottom surface of the channel steel, and the limiting blocks are in clamped connection with the long holes in the bottom of the channel steel.

[0017] The automobile bumper provided by the application has the advantages that: the automobile bumper is stable in installation, the appearance integrity of the front and rear bumpers of the automobile is realized by clamping the plastic shell on the surface of the reinforcing plate, the quick fixing is realized by the cooperation of the built-in rotating shafts and the spline shafts and the spline sleeves, the convenience of disassembly and assembly of the automobile bumper is improved, the buffering protection function is realized, the structure strength of the plastic shell is ensured by cooperation with the reinforcing plate, the impact resistance function is realized, the effective buffering protection is realized by the cooperation of the energy-absorbing materials and the connecting plate, the safety of the driver and the passenger is ensured when the impact is large, the practicality of the bumper is improved, the buffering capacity of the side impact of the bumper is improved, the effective protection function is realized when the automobile bumper is impacted from the front or the side, the buffering and energy-absorbing effect is realized by the cooperation of the movable plate and the connecting rod, the good protection effect is realized when the impact is small, the use performance of the bumper is improved, and the safety of the driver and the passenger is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a car bumper that is easy to disassemble and replace according to one embodiment of this application;

[0020] Figure 2 yes Figure 1 The diagram shows a first-view structure in the embodiment shown.

[0021] Figure 3 yes Figure 2 The side view of the structure in the embodiment shown is a schematic diagram.

[0022] Figure 4 yes Figure 2 A magnified view of the structure at point A in the embodiment shown;

[0023] Figure 5 yes Figure 2 The above-view structural diagram of the embodiment shown;

[0024] Figure 6 yes Figure 2 The schematic diagram of the top view of the steel plate in the embodiment shown;

[0025] Figure 7 yes Figure 2 A three-dimensional structural diagram of the buffer plate in the embodiment shown;

[0026] Figure 8 yes Figure 2 A three-dimensional structural diagram of the mounting plate in the embodiment shown;

[0027] Figure 9 yes Figure 2 A three-dimensional structural diagram of the first connecting plate in the embodiment shown;

[0028] Figure 10 yes Figure 2 A three-dimensional structural diagram of the rotating shaft in the embodiment shown.

[0029] Meaning of the reference numerals in the diagram:

[0030] 1, mounting plate, 2, channel steel, 3, reinforcing plate, 4, plastic shell, 5, limiting plate, 6, limiting block, 7, movable plate, 8, first connecting rod, 9, second connecting rod, 10, buffer plate, 11, opening, 12, bolt, 13, nut, 14, fixed block, 15, steel plate, 16, screw rod, 17, energy-absorbing material, 18, first connecting plate, 19, sleeve, 20, movable rod, 21, sealing plug, 22, second connecting plate, 23, rotating shaft, 24, handle, 25, spline shaft, 26, round hole, 27, split piece, 28, groove, 29, clamping hook, 30, threaded rod, 31, spline sleeve, 32, long hole. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0032] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] Moreover, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For the person skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0035] Furthermore, the terms "mounting", "arrangement", "provided with", "connected", "linked", "sleeved" should be interpreted broadly. For example, it can be a fixed connection, detachable connection, or integral construction; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or an internal connection between two devices, elements or components. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0037] With reference to Figures 1 to 10 The automobile bumper convenient to disassemble and replace comprises an installation plate 1 and a bumper body fixedly connected with the automobile body, and the bumper body is composed of channel steels 2, steel plates 15, reinforcing plates 3 and plastic shells 4.

[0038] With reference to Figures 1 to 10 As a preferred scheme, the installation plate 1 is located between the channel steels 2, the channel steels 2 are slidably connected with movable plates 7, the movable plates 7 are rotatably connected with first connecting rods 8 and second connecting rods 9 at two ends respectively, the first connecting rod 8 is rotatably connected with a buffer plate 10 at the other end, the buffer plate 10 is arranged on the surface of the reinforcing plate 3, the reinforcing plate 3 is connected with the plastic shell 4 in a fit manner, the channel steels 2 are threadedly inserted with threaded rods 30 at the middle portions, the threaded rods 30 are fixedly connected with spline sleeves 31 at the end portions, the threaded rods 30 are movably sleeved with limiting plates 5 at the surfaces, the limiting plates 5 are fixedly connected with limiting blocks 6 at the end portions, long holes 32 are formed in the bottom portions of the channel steels 2, and the limiting blocks 6 are embeddedly connected with the channel steels 2 in the long holes 32. The channel steels 2 and the steel plates 15 mainly play a role of buffering and resisting impact, the plastic shell 4 and the energy-absorbing material 17 play a role of energy absorption and buffering in slight impact, the first connecting rod 8 and the second connecting rod 9 are connected with the movable plate 7, the impact intensity can be offset through rotation and movement of the first connecting rod 8 and the second connecting rod 9, the protection performance is effectively played, the use performance of the automobile bumper is improved, the threaded rod 30 is arranged to realize movement of the limiting plate 5, the position of the limiting plate 5 is adjusted to realize connection between the limiting plate 5 and the two channel steels 2, the bumper is stably connected with the installation plate 1 after installation, the limiting block 6 is separated from the long hole 32 when disassembled, the limiting plate 5 is rotated to the position coinciding with the installation plate 1, and then the bumper can be taken down, the disassembly convenience is improved, and the overall replacement of the bumper is facilitated.

[0039] With reference to Figures 2 to 3 and Figure 9As a specific scheme, the bottom of the reinforcing plate 3 is fixedly connected with the first connecting plate 18 through the energy-absorbing material 17, the bottom of the first connecting plate 18 is fixedly provided with the sleeve 19, the inside of the sleeve 19 is movably sleeved with the movable rod 20, the top end of the movable rod 20 is fixedly connected with the second connecting plate 22, the second connecting plate 22 is rotatably connected with the second connecting rod 9, the reinforcing plate 3 plays a role of reinforcing the plastic shell 4 and plays a role of preliminary anti-collision, the cooperation of the sleeve 19 and the movable rod 20 enables the sleeve 19 to form a pressure inside when relative movement occurs, and further plays a role of buffering and energy absorption, the movement of the first connecting plate 18 and the second connecting plate 22 can respectively drive the sleeve 19 and the movable rod 20 to move, and further plays a role of protection.

[0040] With reference to Figures 1 to 3 As a specific scheme, the number of the channel steel 2 is two, the mounting plate 1 is arranged between the two channel steels 2, the mounting plate 1 is embeddedly inserted with the channel steel 2 and extends to the bottom of the mounting plate 1, the width of the mounting plate 1 is the same as the width of the limiting plate 5, and the mounting plate 1 is connected with the bottom surface of the channel steel 2, the cooperation of the channel steel 2 and the mounting plate 1 can realize quick installation of the bumper, during installation, the bumper is inserted into the mounting plate 1 in a position where the mounting plate 1 and the limiting plate 5 coincide, then the limiting plate 5 is rotated so that the limiting blocks 6 at both ends of the limiting plate 5 correspond to the middle part of the long hole 32 of the channel steel 2, at this time, the threaded rod 30 drives the spline sleeve 31 to rotate and move to abut against the limiting plate 5, and then the limiting blocks 6 are pushed into the long hole 32 to realize connection, at this time, the limiting blocks 6 can limit the rotation of the limiting plate 5, and then quick installation of the bumper is realized.

[0041] With reference to Figures 1 to 5 As the scheme is adopted, the plastic shell 4 is embeddedly connected with the reinforcing plate 3, the plastic shell 4 is provided with the clamping hooks 29 at both ends, the clamping hooks 29 are clamped at both ends of the channel steel 2, both sides of the plastic shell 4 are provided with the splicing pieces 27, the splicing pieces 27 are splicedly connected with the vehicle frames on both sides to ensure the overall appearance of the vehicle, and the recesses 28 are arranged at the top of the splicing pieces 27, the plastic shell 4 plays a role of energy absorption and ensures the overall appearance of the bumper and the vehicle, the splicing pieces 27 can make the appearance of the bumper and the vehicle frame neat, and the bumper is protected inside the plastic shell 4.

[0042] With reference to Figures 2 to 3As a specific scheme, the channel steel 2 is internally provided with two symmetrically distributed movable plates 7, the movable plates 7 are respectively provided with an inclinedly distributed first connecting rod 8 and a second connecting rod 9 at two ends, the first connecting rod 8 and the second connecting rod 9 are located inside the long hole 32, the movable plate 7 can move inside the channel steel 2, and the movable plate 7 pushes the first connecting rod 8 or the second connecting rod 9 to rotate when an impact occurs; the impact force is relieved as an elastic deformation force of the buffer plate 10 and a negative pressure energy absorption reaction force formed by the sleeve 19 and the movable rod 20 to realize the buffering effect, and the impact resistance of the bumper is improved.

[0043] With reference to Figures 2 to 4 and Figure 7 As an extended scheme, the reinforcing plate 3 is internally provided with two symmetrically distributed buffer plates 10, the buffer plates 10 are of an arc-shaped structure and are located at two sides of the bumper, the buffer plates 10 are respectively connected with the channel steel 2 and the reinforcing plate 3 at two ends, the reinforcing plate 3 is screw-connected with a fixing block 14 on the surface, the buffer plates 10 are both provided with a plurality of openings 11 at two ends, and the openings 11 are embeddedly connected with the T-shaped fixing block 14, the buffer plate 10 is used for preliminary protection, and the buffer plate 10 is connected with the screw rod 16 and the fixing block 14 through the openings 11 at two ends, thereby achieving good buffering protection.

[0044] With reference to Figures 1 to 4 and Figure 6 As an extended scheme, the mounting plate 1 is inserted through the middle of the steel plate 15, the steel plate 15 is fixedly connected with the channel steel 2, the steel plate 15 is inserted through the edges and periphery with the screw rod 16, the screw rod 16 is screw-connected with the automobile body, the steel plate 15 and the channel steel 2 are inserted through with the bolt 12, one end of the bolt 12 is screw-connected with the nut 13, and the other end of the bolt 12 is embeddedly connected with the opening 11 inside the top of the buffer plate 10, the steel plate 15 is used for connecting and fixing the channel steel 2, cooperates with the channel steel 2 to achieve the impact resistance, and the mounting stability can be further improved by arranging the screw rod 16.

[0045] With reference to Figures 2 to 3 and Figure 9As a specific scheme, a plurality of energy absorption materials 17 are arranged between the reinforcing plate 3 and the first connecting plate 18, the first connecting plate 18 is fixedly connected with the reinforcing plate 3 through a plurality of sleeves 19, the sleeves 19 are uniformly distributed around the first connecting plate 18, the sleeves 19 are in sliding connection with movable rods 20 inside the sleeves 19, the movable rods 20 are fixedly connected with sealing plugs 21, the sealing plugs 21 are in sealing sleeve connection with the sleeves 19, and cavities are formed in the sealing plugs 21 and the sleeves 19, the energy absorption materials 17 and the plastic shell 4 can absorb energy, the sleeves 19 and the movable rods 20 are connected through the sealing plugs 21, when the sleeves 19 and the movable rods 20 stretch or shrink, the sealing plugs 21 move in the cavities, at this time, the air in the cavities is compressed to form a pressure to overcome part of the impact force, thereby achieving the buffering and energy absorption protection effect.

[0046] With reference to Figures 2 to 3 and Figure 8 and Figure 10 As an extended scheme, the first connecting plate 18 and the second connecting plate 22 are movably sleeved with a rotating shaft 23, the rotating shaft 23 is fixedly connected with a handle 24 and a spline shaft 25 at two ends, the spline shaft 25 is in embedded sleeve connection with a spline sleeve 31, the rotating shaft 23 can move or rotate in the first connecting plate 18 and the second connecting plate 22, the rotating shaft 23 pushes the spline shaft 25 to sleeve the spline sleeve 31, then the handle 24 is rotated to drive the threaded rod 30 to be screwed into the mounting plate 1, and the spline sleeve 31 pushes the limiting plate 5 to move to achieve convenient installation of the bumper.

[0047] With reference to Figures 2 to 3 and Figure 10 By adopting the scheme, a circular hole 26 is arranged in the middle of the reinforcing plate 3, the handle 24 is embeddedly connected in the circular hole 26, the handle 24 is attached to the inner wall of the plastic shell 4, through holes for mounting the automobile lamp are arranged on both sides of the plastic shell 4 and the reinforcing plate 3, after the bumper is installed through the handle 24 and the rotating shaft 23, the handle 24 is placed in the circular hole 26, the plastic shell 4 is installed to abut against the handle 24 to limit, the spline sleeve 31 and the spline shaft 25 are sleeved with each other, and the plastic shell 4 and the handle 24 are kept in contact to prevent the threaded rod 30 from loosening and causing the bumper to fall off.

[0048] With reference to Figures 1 to 3With the scheme, the mounting plate 1 is inserted through the middle of the steel plate 15, the limiting plate 5 at the bottom of the mounting plate 1 is provided with two symmetrically distributed limiting blocks 6, the length of the limiting plate 5 is the same as the distance between the two channel steels 2, the limiting plate 5 is connected with the bottom surface of the channel steel 2, and the limiting block 6 is clamped in the long hole 32 at the bottom of the channel steel 2. During installation, after the steel plate 15 is connected with the vehicle frame, the limiting plate 5 is moved to the other side of the channel steel 2, the limiting plate 5 is pushed against the channel steel 2 through the spline sleeve 31 to realize compression and fixing, so that the stable and convenient installation of the bumper main body and the vehicle frame is realized.

[0049] The technical scheme of the present application, the entire automobile bumper convenient to disassemble and replace is installed by the mounting plate 1, during installation, first rotate the buffer plate 10, so that one end thereof is attached with the channel steel 2, at this time, connection and fixing are realized through the cooperation of the screw rod 16 and the nut 13, at this time, the connection and fixing between the channel steel 2 and the steel plate 15 are realized, then the fixing block 14 on the reinforcing plate 3 is clamped at the other end of the buffer plate 10 to realize the installation of the reinforcing plate 3, after the operation is completed, the steel plate 15, the channel steel 2 and the reinforcing plate 3 are installed on the mounting plate 1 as a whole, the steel plate 15 is inserted on the surface of the mounting plate 1, and the mounting plate 1 is moved to between the two channel steels 2, at this time, the limiting plate 5 overlaps with the mounting plate 1, after connection is completed, the rotating shaft 23 is moved to drive the spline shaft 25 to be sleeved with the spline sleeve 31 and then rotate, and the limiting plate 5 is rotated to the vertical position of the mounting plate 1, when the spline sleeve 31 drives the threaded rod 30 to rotate, the spline sleeve 31 pushes the limiting plate 5 to attach with the bottom of the channel steel 2, at this time, the limiting block 6 is clamped in the limiting block 6, the installation and fixing of the steel plate 15, the channel steel 2 and the mounting plate 1 are realized, and the rotating handle is moved to the inside of the circular hole 26 of the reinforcing plate 3, after the operation is completed, the screw rod 16 is tightened to realize fixing, the plastic shell 4 is attached on the surface of the reinforcing plate 3, the clamping is realized through the clamping hooks 29 on the two sides of the plastic shell 4, the split piece 27 is connected with the vehicle frame on both sides to ensure the overall appearance of the vehicle, and the end of the screw rod 16 is moved to the inside of the groove 28 to realize close connection, so that quick installation is realized, the plastic shell 4 limits the position of the rotating shaft 23 by abutting against the handle 24, so that the handle 24 is directly rotated for operation during subsequent disassembly, when disassembly is needed, only the plastic shell 4 is removed and the screw rod 16 is loosened, and the bumper and the vehicle frame can be separated by rotating the handle 24.

[0050] When the bumper is hit, the plastic shell 4 and the energy-absorbing material 17 play a buffering and energy-absorbing role, and the first connecting plate 18 moves in the process, pushing the second connecting plate 22 to move at the same time, at which time the sleeve 19 and the movable rod 20 are contracted, and the sealing plug 21 is compressed in the cavity inside the sleeve 19 to compress the gas inside the cavity to play an energy-absorbing role, and then push the second connecting plate 22 to move, at which time the second connecting plate 22 drives the first connecting rod 8 to rotate, so that the first connecting rod 8 pushes the movable plate 7 to move inside the channel steel 2, and when the movable plate 7 drives the second connecting plate 22 to move, it pushes the buffer plate 10 to deform, decomposes the impact force directly from the front into a side force to reduce the impact force, and when it is hit from the side, at this time the movable plate 7 moves to the center of the channel steel 2, which can also have the same protection effect, and can play a good buffering and energy-absorbing role when the bumper is hit, protecting the safety of the driver and the passenger.

[0051] The above is only a specific embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A convenient to disassemble and replace the bumper of the car, characterized in that: the convenient to disassemble and replace the bumper of the car, it includes the mounting plate (1) and the bumper body fixedly connected with the car body, the bumper body is composed of channel steel (2), steel plate (15), reinforcing plate (3) and plastic shell (4), the plastic shell (4) is embeddedly connected with the reinforcing plate (3), both ends of the plastic shell (4) are provided with the clamping hook (29), the clamping hook (29) is clamped with both ends of the channel steel (2), both sides of the plastic shell (4) are provided with the split piece (27), the split piece (27) is splitly connected with the frame of the car on both sides to ensure the overall integrity of the appearance of the car, and the split piece (27) is provided with the groove (28) on the top; wherein the mounting plate (1) is located between the channel steel (2), the inside of the channel steel (2) is slidably connected with the movable plate (7), both ends of the movable plate (7) are rotatably connected with the first connecting rod (8) and the second connecting rod (9) respectively, the other end of the first connecting rod (8) is rotatably connected with the buffer plate (10), and the buffer plate (10) is arranged on the surface of the reinforcing plate (3), the reinforcing plate (3) is connected with the plastic shell (4) in a pasting manner, the middle of the channel steel (2) is screwedly inserted with the threaded rod (30), the end of the threaded rod (30) is fixedly connected with the spline sleeve (31), the surface of the threaded rod (30) is movably sleeved with the limiting plate (5), and the end of the limiting plate (5) is fixedly connected with the limiting block (6), the bottom of the channel steel (2) is provided with the long hole (32), and the limiting block (6) is embeddedly connected with the inside of the long hole (32); the middle of the mounting plate (1) is inserted through the steel plate (15), the steel plate (15) is fixedly connected with the channel steel (2), the edges of the steel plate (15) are all inserted through the screw rod (16), the screw rod (16) is screwedly connected with the main body of the car, and the steel plate (15) and the channel steel (2) are all inserted through the bolt (12), one end of the bolt (12) is screwedly connected with the nut (13), and the other end of the bolt (12) is embeddedly connected with the inside of the opening (11) on the top of the buffer plate (10). The bottom of the reinforcing plate (3) is fixedly connected with the first connecting plate (18) through the energy-absorbing material (17), the bottom of the first connecting plate (18) is fixedly provided with the sleeve pipe (19), the inside of the sleeve pipe (19) is movably sleeved with the movable rod (20), and the top end of the movable rod (20) is fixedly connected with the second connecting plate (22), the second connecting plate (22) is rotatably connected with the second connecting rod (9); the inside of the reinforcing plate (3) is provided with two symmetrically distributed buffer plates (10), the buffer plate (10) is of arc-shaped structure and is located on both sides of the bumper, both ends of the buffer plate (10) are connected with the channel steel (2) and the reinforcing plate (3) in a pasting manner, and the surface of the reinforcing plate (3) is screwedly connected with the fixing block (14), both ends of the buffer plate (10) are provided with a plurality of openings (11), and the openings (11) are embeddedly connected with the fixing block (14) of T-shaped structure. ​ ​ 2. The easily replaceable bumper of claim 1, wherein: The number of the channel steel (2) is two, the mounting plate (1) is arranged between the two channel steel (2), the mounting plate (1) is inserted into the channel steel (2) and extends to the bottom of the mounting plate (1), the width of the mounting plate (1) is the same as the width of the limiting plate (5), and the mounting plate (1) is connected with the bottom surface of the channel steel (2).

3. The easily replaceable bumper of claim 1, wherein: The channel steel (2) is internally provided with two symmetrically distributed movable plates (7), the movable plates (7) are respectively provided with the first connecting rod (8) and the second connecting rod (9) which are inclinedly distributed at two ends, and the first connecting rod (8) and the second connecting rod (9) are located in the long hole (32).

4. The easily replaceable bumper of claim 1, wherein: The reinforcing plate (3) and the first connecting plate (18) are provided with a plurality of energy-absorbing materials (17), the first connecting plate (18) is fixedly connected with the reinforcing plate (3) through the sleeve (19), the number of the sleeve (19) is a plurality, the plurality of sleeves (19) are uniformly distributed around the first connecting plate (18), the sleeve (19) is slidably connected with the movable rod (20) inside, the movable rod (20) is fixedly connected with the sealing plug (21) at the end, the sealing plug (21) is sealingly sleeved with the sleeve (19) inside, and the sealing plug (21) and the sleeve (19) inside form a cavity.

5. The easily replaceable bumper of claim 1, wherein: The first connecting plate (18) and the second connecting plate (22) are movably sleeved with the rotating shaft (23), the rotating shaft (23) is fixedly connected with the handle (24) and the spline shaft (25) at two ends, and the spline shaft (25) is embeddedly sleeved with the spline sleeve (31) inside.

6. The easily replaceable bumper of claim 1, wherein: The reinforcing plate (3) is provided with a circular hole (26) in the middle, the circular hole (26) is embeddedly connected with the handle (24) inside, the handle (24) is connected with the inner wall of the plastic shell (4), and the plastic shell (4) and the reinforcing plate (3) are provided with through holes for mounting the automobile lamp on both sides.

7. The easily replaceable bumper of claim 1, wherein: The mounting plate (1) is inserted into the middle of the steel plate (15), the limiting plate (5) at the bottom of the mounting plate (1) is provided with two symmetrically distributed limiting blocks (6), the length of the limiting plate (5) is the same as the distance between the two channel steel (2), the limiting plate (5) is connected with the bottom surface of the channel steel (2), and the limiting block (6) is clamped into the long hole (32) at the bottom of the channel steel (2).

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