A front bumper of a vehicle capable of moving up and down in front and back directions and a vehicle

Abstract

The application discloses a front bumper of a vehicle which can be telescopically moved up and down, and belongs to the field of vehicle parts, and comprises a front bumper upper body and a front bumper lower body. The bottom of the front bumper upper body is fixedly connected with a bumper beam, the center of the outer wall of the bumper beam is fixedly connected with a support frame, and the inner wall of the support frame is provided with a transmission assembly. The support column and the connecting rod arranged at the bottom are synchronously rotated by the linkage rod, so that the connecting rod arranged in the front bumper lower body is gradually deviated under the driving of the worm gear. With the continuous rotation of the two end connecting rods, the limiting block arranged at the end of the connecting rod continuously extrudes the limiting box, and the limiting box and the reinforcing rib are separated from the front bumper upper body and extended, so that the pedestrian is "shovelled up", and the pedestrian is guided to fall to the rear side, and the problem that the pedestrian's legs are easily rolled into the bottom of the vehicle due to the influence of the inertia of the vehicle when the traditional vehicle collides with the pedestrian, thereby causing secondary injury to the pedestrian is further solved.

Description

Technical Field

[0001] This application belongs to the field of automotive parts, and specifically relates to a front bumper and vehicle that can extend and retract forward and backward and move up and down. Background Technology

[0002] The car bumper is a crucial component of a vehicle, and its development is closely related to advancements in the automotive industry, improvements in safety regulations, and innovations in materials technology. Traditionally, to meet pedestrian protection requirements, a lower leg protection beam is added inside the front bumper, specifically within the engine compartment. The primary function of this beam is to protect pedestrians during a collision. This beam is typically located at the lower front of the car and is designed to first contact the pedestrian's legs during a collision, thereby reducing injury and preventing the pedestrian from being trapped under the vehicle.

[0003] The existing technology has the following problems: 1. When a vehicle collides with a pedestrian, the pedestrian's legs are easily caught under the vehicle due to the vehicle's inertia, causing secondary injuries to the pedestrian.

[0004] 2. In existing vehicles, when a pedestrian is hit, the pedestrian's thigh or lumbar spine collides with the top of the front bumper lower body, causing secondary injury. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a car front bumper and vehicle that can extend and retract forward and backward and move vertically.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A car front bumper that can extend and retract and move up and down includes an upper front bumper body and a lower front bumper body. The bottom of the upper front bumper body is fixedly connected to an anti-collision beam, and a support frame is fixedly connected to the center of one side of the outer wall of the anti-collision beam. A transmission component is provided on the inner wall of the support frame. The transmission assembly includes support columns that pass through and are rotatably connected to both ends of the bottom of the support frame, and a connecting rod is fixedly connected to the bottom of the support column, while a limit block is rotatably connected to the end of the connecting rod. The bottom of the inner wall of the front lower body is fixedly connected with a reinforcing rib, and the top of the reinforcing rib is fixedly connected with several mutually symmetrical limiting boxes, and the inner wall of the limiting box is slidably connected to the bottom of the limiting block.

[0007] A further improvement of the technical solution of the present invention is that: a motor is fixedly connected to one end of the outer wall of the anti-collision beam near the support frame, and a transmission rod is fixedly connected to the output end of the motor.

[0008] A further improvement of the technical solution of the present invention is that: a worm gear is rotatably connected at the center of the inner wall of the support frame, and an extension rod is fixedly connected to the end of the worm gear, and the end of the extension rod is rotatably connected to the inner wall of the support frame.

[0009] A further improvement of the technical solution of the present invention is that a linkage bevel gear is fixedly connected to the outer wall of the extension rod.

[0010] A further improvement of the technical solution of the present invention is that a transmission bevel gear meshes with the outer wall of the linkage bevel gear.

[0011] A further improvement of the technical solution of the present invention is that the center of the inner cavity of the transmission bevel gear is fixedly connected to the outer wall of the transmission rod.

[0012] A further improvement of the technical solution of the present invention is that the outer wall of the transmission rod penetrates and is rotatably connected to the inner wall of the support frame.

[0013] A further improvement of the technical solution of the present invention is that: the ends of the two support columns are fixedly connected with linkage rods, and the ends of the linkage rods are rotatably connected to the top of the inner wall of the support frame; the outer walls of the two linkage rods are fixedly connected with worm gears, and the outer walls of the two worm gears mesh with the outer walls of the worm.

[0014] A further improvement of the technical solution of the present invention is that: the two ends of the top of the inner wall of the front lower body are fixedly connected to mutually symmetrical insert boxes, and the inner wall of the insert box is inserted with a protective rubber ring, while the outer wall of the protective rubber ring is bonded to the top of the inner wall of the front lower body.

[0015] A vehicle employs the aforementioned type of car front bumper that can extend and retract forward and backward and move up and down.

[0016] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings.

[0017] Compared with the prior art, this application has the following advantages: 1. This invention provides a car front bumper and vehicle that can extend and retract forward and backward and move up and down. A linkage rod drives the support column and the connecting rod at the bottom to rotate synchronously. This causes the connecting rod housed in the lower body of the front bumper to gradually shift under the drive of a worm gear. As the connecting rods at both ends rotate continuously, the limiting blocks at the ends of the connecting rods continuously squeeze the limiting box, causing the limiting box, along with the reinforcing ribs, to detach from the upper body of the front bumper and extend outward. This allows it to first contact the pedestrian's lower leg, effectively "scooping up" the pedestrian and guiding them to fall diagonally backward. This further solves the problem that in traditional vehicle collisions with pedestrians, the inertia of the vehicle can easily cause the pedestrian's legs to get caught under the vehicle, resulting in secondary injuries.

[0018] 2. This invention provides a car front bumper and vehicle that can extend and retract forward and backward and move up and down. The front bumper features stacked inserts at both ends of the top of the inner wall of the lower front bumper body. Two ends of a protective rubber ring are inserted into these inserts, and the bottom of the protective rubber ring is then embedded into a groove on the top of the inner wall of the lower front bumper body for initial fixation. The adhesive strip between the protective rubber ring and the lower front bumper body is then torn off, fixing the protective rubber ring to the top of one side of the inner wall of the lower front bumper body. When the vehicle collides with a pedestrian, causing the pedestrian to "sit" between the lower and upper front bumper bodies, the protective rubber ring protects the pedestrian's lumbar spine or thighs. This further solves the problem of secondary injuries caused by the pedestrian's thighs or lumbar spine colliding with the top of the lower front bumper body during a traditional vehicle collision. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A structural diagram of the present invention is shown; Figure 2 This diagram shows the unfolded structure of the front lower body of the present invention; Figure 3 A top structural diagram of the front lower body of the present invention is shown; Figure 4 A structural diagram of the support frame of the present invention is shown.

[0021] Legend: 1. Upper front bumper body; 2. Lower front bumper body; 3. Anti-collision beam; 4. Support frame; 5. Support column; 6. Connecting rod; 7. Limiting block; 8. Reinforcing rib; 9. Limiting box; 10. Motor; 11. Transmission rod; 12. Worm gear; 13. Extension rod; 14. Linkage bevel gear; 15. Transmission bevel gear; 16. Linkage rod; 17. Worm gear; 18. Insert box; 19. Protective rubber ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] like Figure 1 , 2 As shown in Figure 3, an embodiment of the present invention provides a retractable and movable front bumper for automobiles, comprising an upper front bumper body 1 and a lower front bumper body 2. A crash beam 3 is fixedly connected to the bottom of the upper front bumper body 1, and a support frame 4 is fixedly connected to the center of one side of the outer wall of the crash beam 3. A transmission assembly is provided on the inner wall of the support frame 4. The transmission assembly includes symmetrical support columns 5 that pass through and are rotatably connected to both ends of the bottom of the support frame 4. A connecting rod 6 is fixedly connected to the bottom of the support column 5, and a limit block 7 is rotatably connected to the end of the connecting rod 6. A reinforcing rib 8 is fixedly connected to the bottom of the inner wall of the lower front bumper body 2, and several symmetrical limit boxes 9 are fixedly connected to the top of the reinforcing rib 8. The inner wall of the limit box 9 is slidably connected to the bottom of the limit block 7. A motor 10 is fixedly connected to one end of the outer wall of the crash beam 3 near the support frame 4. A transmission rod 11 is fixedly connected to the output end of the motor 10. A worm gear 12 is rotatably connected to the center of the inner wall of the support frame 4, and an extension rod 13 is fixedly connected to the end of the worm gear 12. The end of the extension rod 13 is rotatably connected to the inner wall of the support frame 4. A linkage bevel gear 14 is fixedly connected to the outer wall of the extension rod 13. A transmission bevel gear 15 meshes with the outer wall of the linkage bevel gear 14. The center of the inner cavity of the transmission bevel gear 15 is fixedly connected to the outer wall of the transmission rod 11. The outer wall of the transmission rod 11 penetrates and rotatably connects to the inner wall of the support frame 4. A linkage rod 16 is fixedly connected to the ends of both support columns 5, and the ends of the linkage rod 16 are rotatably connected to the top of the inner wall of the support frame 4. A worm wheel 17 is fixedly connected to the outer wall of both linkage rods 16, and the outer walls of the two worm wheels 17 mesh with the outer wall of the worm gear 12.

[0024] like Figure 3As shown, the two ends of the top of the inner wall of the front bumper lower body 2 are fixedly connected to mutually symmetrical insert boxes 18, and the inner wall of the insert box 18 is inserted with a protective rubber ring 19, while the outer wall of the protective rubber ring 19 is bonded to the top of the inner wall of the front bumper lower body 2. A vehicle adopts the above-mentioned automobile front bumper that can be extended and retracted and moved up and down.

[0025] The technical problem that this invention aims to solve is to prevent pedestrians from being trapped under vehicles during collisions.

[0026] During operation, a crash beam 3 is installed at the bottom of the upper body 1 of the front bumper, and a support frame 4 is installed at the center of one side of the outer wall of the crash beam 3. Symmetrical support columns 5 are installed at both ends of the bottom of the support frame 4, and a connecting rod 6 is installed at the bottom of the support column 5. Since the bottom of the inner wall of the lower body 2 of the front bumper is provided with a reinforcing rib 8, and the top of the reinforcing rib 8 is provided with several symmetrical limiting boxes 9, the limiting block 7 at the end of the connecting rod 6 is limited by the inner wall of the limiting box 9, thereby achieving the purpose of the connecting rod 6 supporting the lower body 2 of the front bumper. It should be further explained that, since the bottom of the inner wall of the lower front bumper body 2 is provided with reinforcing ribs 8, the lower front bumper body 2 is reinforced by the reinforcing ribs 8. In conjunction with the several limiting boxes 9 provided on its top, the overall center of the lower front bumper body 2 is concentrated on the limiting blocks 7 in the limiting boxes 9 at both ends. When the vehicle is driving normally, the top of the lower front bumper body 2 is in contact with the bottom of the upper front bumper body 1, and the connecting rods 6 at both ends are retracted into the lower front bumper body 2. This makes the weight of the lower front bumper body 2 evenly distributed on the connecting rods 6, effectively reducing the peak value of the local stress of the lower front bumper body 2, making the lower front bumper body 2 more stable, and avoiding the problem of the lower front bumper body 2 falling off when facing bumpy roads and being affected by external forces. It should be further explained that when the vehicle is about to collide with a pedestrian, a camera mounted on the front of the vehicle captures an image of the front of the vehicle (camera capture is existing technology) and transmits a signal to activate a motor 10 located on the outer wall of the anti-collision beam 3 near the support frame 4. The motor 10 drives a transmission rod 11 at its output end. Using one end of the transmission rod 11's outer wall and the inner wall of the support frame 4 as a fulcrum, the transmission bevel gear 15 (all bevel gears mentioned in the text are right-angle bevel gears, existing technology) at the end of the transmission rod 11 rotates at a constant speed on the inner wall of the support frame 4. Because the support frame... An extension rod 13 is provided at the center of the inner wall of the support frame 4, and a worm gear 12 is provided on the side of the inner wall of the support frame 4 away from the extension rod 13. The extension rod 13 and the worm gear 12 are fixed to each other, so that the transmission bevel gear 15 drives the linkage bevel gear 14 provided on the outer wall of the extension rod 13 to rotate synchronously. During this period, the linkage bevel gear 14 drives the extension rod 13 to rotate, and at the same time drives the worm gear 12 to rotate synchronously. Since the ends of the two support columns 5 are provided with linkage rods 16, and the ends of the linkage rods 16 are fulcrumd at the top of the inner wall of the support frame 4, and worm gears 17 are provided on their outer walls, so that when the worm gear 16 rotates, the extension rod 13 rotates, the worm gear 12 rotates, and the extension rod 13 rotates, ... the extension rod 13 rotates, and the extension rod 13 rotates, the extension rod 13 rotates, the extension rod 13 rotates, the extension rod 13 rotates, the extension rod 13 rotates, the extension rod 13 rotates, the extension rod 13 rotates, When rod 12 rotates, it synchronously drives the worm gears 17 on both sides of its outer wall to rotate. The worm gears 17 drive the support column 5 and the connecting rod 6 at the bottom to rotate synchronously through the linkage rod 16. As a result, the connecting rod 6 stored in the lower front bumper body 2 gradually shifts under the drive of the worm gears 17. As the connecting rods 6 at both ends continue to rotate, the limiting blocks 7 at the ends of the connecting rods 6 continuously squeeze the limiting box 9, causing the limiting box 9, along with the reinforcing rib 8, to separate from the lower front bumper body 2 and extend out, thus making contact with the pedestrian's lower leg first, thereby "scooping up" the pedestrian and guiding the pedestrian diagonally backward. The tilting mechanism not only increases the contact area between pedestrians and vehicles during collisions, ensuring that the force generated by the collision is evenly distributed on the pedestrian and avoiding concentrated impact that could damage the pedestrian's organs or bones, but also, under the inertia generated by the vehicle collision, when the pedestrian is "sitting" between the lower front bumper body 2 and the upper front bumper body 1, it can lift the pedestrian's body, preventing the pedestrian from falling to the ground and causing secondary injuries. This further solves the problem that in traditional vehicle collisions with pedestrians, the inertia of the vehicle can easily cause the pedestrian's legs to get caught under the vehicle, resulting in secondary injuries. It should be reiterated that by setting two stacked insert boxes 18 at the top of the inner wall of the lower front bumper body 2, the two ends of the protective rubber ring 19 are inserted into the insert boxes 18 respectively. Then, the bottom of the protective rubber ring 19 is embedded into the groove set in the top of the inner wall of the lower front bumper body 2 to initially fix the protective rubber ring 19. Then, the rubber strip between the protective rubber ring 19 and the lower front bumper body 2 is torn off, so that the protective rubber ring 19 is fixed to the top of one side of the inner wall of the lower front bumper body 2. When the vehicle collides with a pedestrian and the pedestrian is "sitting" between the lower front bumper body 2 and the upper front bumper body 1, the protective rubber ring 19 is used to protect the pedestrian's lumbar spine or thigh. This further solves the problem that when a vehicle collides with a pedestrian, the pedestrian's thigh or lumbar spine collides with the top of the lower front bumper body 2, causing secondary injury.

[0027] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A car front bumper that can extend and retract forward and backward and move up and down, characterized in that: It includes a front bumper upper body (1) and a front bumper lower body (2). The bottom of the front bumper upper body (1) is fixedly connected to a crash beam (3), and a support frame (4) is fixedly connected to the center of one side of the outer wall of the crash beam (3). A transmission component is provided on the inner wall of the support frame (4). The transmission assembly includes a support column (5) that runs through and is rotatably connected to the bottom ends of the support frame (4) symmetrically connected, and a connecting rod (6) is fixedly connected to the bottom of the support column (5), while a limit block (7) is rotatably connected to the end of the connecting rod (6). The bottom of the inner wall of the front lower body (2) is fixedly connected with a reinforcing rib (8), and the top of the reinforcing rib (8) is fixedly connected with several mutually symmetrical limiting boxes (9), and the inner wall of the limiting box (9) is slidably connected to the bottom of the limiting block (7).

2. A car front bumper that can extend and retract forward and backward and move up and down according to claim 1, characterized in that: The outer wall of the anti-collision beam (3) is fixedly connected to a motor (10) at one end near the support frame (4), and the output end of the motor (10) is fixedly connected to a transmission rod (11).

3. A car front bumper that can extend and retract forward and backward and move up and down according to claim 2, characterized in that: A worm gear (12) is rotatably connected to the center of the inner wall of the support frame (4), and an extension rod (13) is fixedly connected to the end of the worm gear (12), while the end of the extension rod (13) is rotatably connected to the inner wall of the support frame (4).

4. A car front bumper that can extend and retract forward and backward and move up and down according to claim 3, characterized in that: The outer wall of the extension rod (13) is fixedly connected to a linkage bevel gear (14).

5. A car front bumper that can extend and retract forward and backward and move up and down according to claim 4, characterized in that: The outer wall of the linkage bevel gear (14) is meshed with the transmission bevel gear (15).

6. A car front bumper that can extend and retract forward and backward and move up and down according to claim 5, characterized in that: The center of the inner cavity of the transmission bevel gear (15) is fixedly connected to the outer wall of the transmission rod (11).

7. A car front bumper that can extend and retract forward and backward and move up and down according to claim 6, characterized in that: The outer wall of the transmission rod (11) is connected to the inner wall of the support frame (4) through and rotatably.

8. A car front bumper that can extend and retract forward and backward and move up and down according to claim 7, characterized in that: Both of the support columns (5) are fixedly connected to the ends of the linkage rods (16), and the ends of the linkage rods (16) are rotatably connected to the top of the inner wall of the support frame (4). Both of the linkage rods (16) are fixedly connected to the outer walls of the outer walls of the two linkage rods (16), and the outer walls of the two worm wheels (17) mesh with the outer walls of the worm (12).

9. A car front bumper that can extend and retract forward and backward and move up and down according to claim 8, characterized in that: The two ends of the top of the inner wall of the front lower body (2) are fixedly connected to symmetrical insert boxes (18), and the inner wall of the insert box (18) is fitted with a protective rubber ring (19), while the outer wall of the protective rubber ring (19) is bonded to the top of the inner wall of the front lower body (2).

10. A vehicle, characterized in that, The above-described front bumper of a car is telescopic and movable up and down, as described in any one of claims 1-9.

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