Energy-absorbing bumper for new energy vehicles

Abstract

The present invention provides an energy-absorbing bumper for a new energy vehicle, and relates to the field of energy-absorbing bumpers. The energy-absorbing bumper for a new energy vehicle comprises a bumper, wherein a first buffer mechanism is provided at the rear end of the bumper, a second buffer mechanism is provided at the rear end of the first buffer mechanism, an impact elimination mechanism is provided at the rear end of the second buffer mechanism, and the first buffer mechanism comprises a first buffer plate, and the left and right parts of the front end of the first buffer plate are both provided with a first inner groove, and the top and bottom ends of the first inner groove are both provided with a first slide groove, and a first slider is slidably connected in the first slide groove. The acting force is offset by a protective steel pipe, and then the acting force is transmitted to the first buffer mechanism, the second buffer mechanism and the impact elimination mechanism by a hydraulic buffer. Under the joint action of the three, the acting force is buffered and energy absorbed to minimize the damage to passengers of the new energy vehicle in the event of an accident.

Description

Technical Field

[0001] The present invention relates to the field of energy absorbing bumpers, in particular to energy absorbing bumpers for new energy vehicles. Background Art

[0002] With the continuous development of society, the per capita growth of automobiles continues to increase, and road traffic safety issues have become a hot topic of concern to all countries and today's society. The vast majority of traffic accidents are caused by improper driver operation or other reasons. Emergency braking often occurs due to driver distraction or fatigue driving. In recent years, the continuous development of new energy vehicles, due to their superior performance, the car speed is faster, and the overall body is lighter. It becomes more difficult to brake after the speed increases, which leads to the frequent occurrence of emergency braking and the crisis it brings. Therefore, energy-absorbing bumpers for new energy vehicles are also born to provide solutions to solve safety accidents caused by emergency braking or other reasons.

[0003] The existing energy-absorbing bumpers of new energy vehicles mainly rely on the deformation of the bumper itself to cushion the impact force when a collision occurs. The overall energy-absorbing capacity is poor and cannot effectively protect and reduce the injuries suffered by passengers in the vehicle body in an accident. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an energy-absorbing bumper for new energy vehicles, which solves the problem that the existing energy-absorbing bumper for new energy vehicles has poor overall buffering and energy-absorbing capacity and cannot better protect and reduce the injuries suffered by passengers in the vehicle body in accidents.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-absorbing bumper for a new energy vehicle comprises a bumper, a first buffer mechanism is arranged at the rear end of the bumper, a second buffer mechanism is arranged at the rear end of the first buffer mechanism, and an impact elimination mechanism is arranged at the rear end of the second buffer mechanism;

[0006] The first buffer mechanism includes a first buffer plate, the left and right parts of the front end of the first buffer plate are provided with a first inner groove, the top and bottom ends of the first inner groove are provided with a first slide groove, the first slide groove is slidably connected with a first slider, the inner end of the first slider is respectively fixedly connected to the upper and lower ends of the moving block, the inner side of the moving block is fixedly connected to the top end of the rod body of the first telescopic rod, the outer side of the first telescopic rod is fixedly connected to the first spring, the front end of the moving block is fixedly connected to a triangular connecting piece, the middle part of the triangular connecting piece is rotatably connected to one end of the first connecting column, the other end of the first connecting column is rotatably connected to the rear end of the connecting bolt, the front end of the connecting bolt is rotatably connected to one end of the second connecting column, the other end of the second connecting column is rotatably connected to the rear end of the concave block, and the left and right sides of the middle part of the front end of the first buffer plate are respectively fixedly connected to hydraulic buffers.

[0007] Preferably, the second buffer mechanism includes a second buffer plate, the left and right parts of the front end of the second buffer plate are provided with a second inner groove, the top and bottom ends of the second inner groove are provided with a second slide groove, the second slide groove is slidably connected with a second sliding block, the inner end of the second sliding block is respectively fixedly connected to the upper and lower ends of the fixed block, the inner side of the fixed block is fixedly connected to the top of the rod body of the second telescopic rod, the outer side of the second telescopic rod is fixedly connected with a second spring, the upper and lower parts of the inner side of the second inner groove are fixedly connected with a fixing rod, the outer side of the fixing rod is respectively slidably connected to the upper and lower parts of the left and right sides of the fixing block, the front end of the fixed block is fixedly connected with the first external connecting block, the front end of the first external connecting block is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to the rear end of the second external connecting block.

[0008] Preferably, the impact elimination mechanism comprises a single-port box, a placement groove is provided on the inner side of the front end of the single-port box, a rubber plate is provided on the inner rear end of the placement groove, and an ACF vibration damping plate is provided on the front end of the rubber plate.

[0009] Preferably, a buffer outer layer sleeve is arranged on the outer side of the first buffer plate, and the middle parts of the left and right sides of the buffer outer layer sleeve are fixedly connected with connecting blocks, and the middle parts of the connecting blocks are slidably connected with sliding columns.

[0010] Preferably, trapezoidal blocks are fixedly connected to the left and right sides of the second buffer plate, sleeves are fixedly connected to the outer sides of the trapezoidal blocks, circular grooves are provided on the inner sides of the front ends of the sleeves, limiting circular blocks are slidably connected in the circular grooves, sliding columns are fixedly connected to the middle parts of the front ends of the limiting circular blocks, and the front ends of the sliding columns are respectively fixedly connected to the left and right sides of the rear end of the bumper.

[0011] Preferably, the upper and lower sides of the rear end of the single-port box are fixedly connected with connecting plates, and the top and bottom ends of the connecting plates are provided with a plurality of connecting holes.

[0012] Preferably, a plurality of protective steel pipes are equidistantly arranged at the front end of the bumper, and the protective steel pipes are injection molded by toughened polypropylene material.

[0013] Preferably, the left and right sides of the middle portion of the rear end of the bumper are respectively fixedly connected to the front end of the hydraulic buffer, and the rear end of the bumper near the middle portions of the left and right sides are respectively fixedly connected with concave blocks.

[0014] Preferably, the bottom end of the cylinder of the first telescopic rod on the left side is connected to the left inner wall of the first inner groove on the left side, and the bottom end of the cylinder of the first telescopic rod on the right side is connected to the right inner wall of the first inner groove on the right side.

[0015] Preferably, the bottom end of the cylinder of the second telescopic rod on the left side is connected to the left inner wall of the second inner groove on the left side, and the bottom end of the cylinder of the second telescopic rod on the right side is connected to the right inner wall of the second inner groove on the right side.

[0016] Working principle: when the bumper is hit hard, the protective steel pipe is first deformed and collapsed by the impact force, thereby offsetting part of the force, and then the remaining force is transmitted to the hydraulic buffer, which then contracts, driving the second connecting columns connected to the concave blocks on both sides to move. The inward movement of the second connecting column will drive the first connecting column connected to the rear end of the connecting bolt to rotate, so that the outer side of the first connecting column contacts the oblique angle of the triangular connecting piece, so that the first connecting column has a support point, and then the moving block is pushed inward through the connection between the triangular connecting piece and the moving block, and the operation is made more stable by the provision of the first sliding block and the first sliding groove. The inward moving block squeezes the rod body of the first telescopic rod, thereby causing the rod body of the first telescopic rod to be retracted into its cylinder body, and at the same time squeezes the first spring on the outside of the first telescopic rod, causing it to contract, thereby buffering and absorbing the remaining force. When the moving block slides to a certain position, it no longer slides, and the remaining force The force will be transmitted to the first buffer plate. On the one hand, the force is further buffered and absorbed by the buffer outer sleeve. On the other hand, it is transmitted to the second external block, the connecting rod and the first external block connected at the rear through the moving block. The three then transmit the remaining transmitted force in the same way as mentioned above, so that the fixed block moving inwards squeezes the rod body of the second telescopic rod, and then the rod body of the second telescopic rod is retracted into its cylinder body. At the same time, the second spring on the outside of the second telescopic rod is squeezed to cause it to shrink, thereby buffering and absorbing the remaining force of the secondary transmission. Similarly, the second buffer plate completely absorbs the remaining force through the ACF vibration damping plate and rubber plate inside the single-port box connected at the rear. Through the entire buffering and energy reduction process, the first buffer mechanism and the second buffer mechanism make the force transmitted through the bumper, through the combined effect of buffering and lateral squeezing force, reduce the force generated by the collision to a minimum, thereby reducing the damage to people in the car.

[0017] The present invention provides an energy-absorbing bumper for new energy vehicles, which has the following beneficial effects:

[0018] 1. The present invention offsets a part of the acting force and transmits the acting force through the protective steel pipe and the hydraulic buffer. The acting force transmitted by the hydraulic buffer will cause the moving block in the first buffer mechanism to move inward and squeeze the rod body of the first telescopic rod, thereby causing the rod body of the first telescopic rod to be retracted into its cylinder body. At the same time, the first spring on the outer side of the first telescopic rod will be squeezed to cause it to shrink, thereby buffering and absorbing the remaining acting force. The second buffer mechanism also has the same principle. Through the joint action of the two, when the bumper is hit, the impact acting force generated can be buffered and absorbed, thereby reducing the strong acting force generated by the collision, thereby reducing the acting force to a minimum and reducing the serious problem of personal injury caused by car collision.

[0019] 2. The present invention sets up an impact elimination mechanism, firstly uses the ACF vibration damping plate made of ACF extreme shock-absorbing material to act as a buffer energy absorption layer, so that the remaining force is absorbed by the first buffer mechanism and the second buffer mechanism, and the energy absorption effect thereof continuously reduces and eliminates the force transmitted to the body of the new energy vehicle, thereby further reducing the damage caused to the passengers of the new energy vehicle in the event of an accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention;

[0021] Figure 2 A top view of the present invention;

[0022] Figure 3 It is a schematic diagram of the disassembly of the first buffer mechanism structure of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the second buffer mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of the second buffer plate of the present invention;

[0025] Figure 6 It is a schematic diagram of the internal structure of the single-port box of the present invention.

[0026] Among them, 1. bumper; 2. first buffer mechanism; 201. first buffer plate; 202. first inner groove; 203. first slide groove; 204. first slider; 205. moving block; 206. first telescopic rod; 207. first spring; 208. triangular connector; 209. first connecting column; 210. connecting bolt; 211. second connecting column; 212. concave block; 213. hydraulic buffer; 214. buffer outer sleeve; 215. connecting block; 3. second buffer mechanism; 301. second buffer plate; 302. second Inner groove; 303, second slide groove; 304, second slider; 305, fixed block; 306, second telescopic rod; 307, second spring; 308, fixed rod; 309, first external block; 310, connecting rod; 311, second external block; 4, impact elimination mechanism; 401, single-port box; 402, placement groove; 403, rubber plate; 404, ACF vibration damping plate; 405, connecting plate; 406, connecting hole; 5, trapezoidal block; 6, sleeve; 7, circular groove; 8, sliding column; 9, limiting circular block; 10, protective steel pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example:

[0029] like Figure 1-6 As shown, an embodiment of the present invention provides an energy-absorbing bumper for a new energy vehicle, comprising a bumper 1, a first buffer mechanism 2 is disposed at the rear end of the bumper 1, a second buffer mechanism 3 is disposed at the rear end of the first buffer mechanism 2, and an impact elimination mechanism 4 is disposed at the rear end of the second buffer mechanism 3;

[0030] The first buffer mechanism 2 includes a first buffer plate 201, the left and right parts of the front end of the first buffer plate 201 are both provided with a first inner groove 202, the top and bottom ends of the first inner groove 202 are both provided with a first slide groove 203, the first slide groove 203 is slidably connected with a first slider 204, the inner end of the first slider 204 is respectively fixedly connected to the upper and lower ends of a moving block 205, the inner side of the moving block 205 is fixedly connected to the top end of the rod body of a first telescopic rod 206, and the outer side of the first telescopic rod 206 is fixedly connected with a first spring 2 07, the front end of the moving block 205 is fixedly connected with a triangular connecting piece 208, the middle part of the triangular connecting piece 208 is rotatably connected to one end of the first connecting column 209, the other end of the first connecting column 209 is rotatably connected to the rear end of the connecting bolt 210, the front end of the connecting bolt 210 is rotatably connected to one end of the second connecting column 211, the other end of the second connecting column 211 is rotatably connected to the rear end of the concave block 212, and the left and right sides of the middle part of the front end of the first buffer plate 201 are fixedly connected with hydraulic buffers 213 respectively. When the bumper 1 is hit hard, the protective steel pipe 10 is first deformed and collapsed by the impact force, thereby offsetting a part of the force, and then the remaining force is transmitted to the hydraulic buffer 213, and the hydraulic buffer 213 then contracts, driving the second connecting column 211 connected to the concave block 212 on both sides to move, and the inward movement of the second connecting column 211 will drive the first connecting column 209 connected to the rear end of the connecting bolt 210 to rotate, so that the outer side of the first connecting column 209 contacts the oblique angle of the triangular connecting piece 208, so that the first connecting column 209 has a support point, and then the connecting action of the triangular connecting piece 208 and the moving block 205 is used to support the moving block 205. 05 is pushed inwardly, and the operation is made more stable by the first slider 204 and the first slide groove 203. The moving block 205 moving inwardly squeezes the rod body of the first telescopic rod 206, thereby causing the rod body of the first telescopic rod 206 to be retracted into its cylinder body. At the same time, the first spring 207 on the outside of the first telescopic rod 206 is squeezed to cause it to shrink, thereby buffering and absorbing the remaining force. When the moving block 205 slides to a certain position, it stops sliding, and the remaining force is transmitted to the first buffer plate 201, which further buffers and absorbs the force through the buffer outer layer sleeve 214, and is also convenient for transmitting to the second buffer mechanism 3.

[0031] The second buffer mechanism 3 includes a second buffer plate 301, and the left and right parts of the front end of the second buffer plate 301 are both provided with second inner grooves 302, and the top and bottom ends of the second inner grooves 302 are both provided with second slide grooves 303, and the second slide grooves 303 are both slidably connected with second sliders 304, and the inner ends of the second sliders 304 are respectively fixedly connected to the upper and lower ends of the fixed block 305, and the inner sides of the fixed blocks 305 are fixedly connected to the top of the rod body of the second telescopic rod 306, and the outer sides of the second telescopic rod 306 are fixedly connected with second springs 307, and the upper and lower parts of the inner sides of the second inner grooves 302 are fixedly connected with fixed rods 308, and the outer sides of the fixed rods 308 are respectively slidably connected with the upper and lower parts of the left and right sides of the fixed block 305, and the front ends of the fixed blocks 305 are fixedly connected with the first external blocks 309, and the front ends of the first external blocks 309 are rotatably connected to one end of the connecting rod 310, and the other end of the connecting rod 310 is rotatably connected to the rear end of the second external block 311. The force is transmitted to the connected second external block 311, the connecting rod 310 and the first external block 309 through the moving block 205, and the three then use the remaining transmitted force to make the fixed block 305 move inward, thereby squeezing the rod body of the second telescopic rod 306, so that the rod body of the second telescopic rod 306 is retracted into its cylinder body, and at the same time, the second spring 307 on the outer side of the second telescopic rod 306 is squeezed to cause it to shrink, thereby buffering and absorbing the remaining force of the secondary transmission.

[0032] The impact elimination mechanism 4 includes a single-port box 401, a placement groove 402 is arranged inside the front end of the single-port box 401, a rubber plate 403 is arranged at the rear end of the inner side of the placement groove 402, and an ACF damping plate 404 is arranged at the front end of the rubber plate 403. The ACF damping plate 404 is made of ACF extreme damping material, which is a high-performance polymer material that combines buffering, shock absorption and energy absorption. It is also a leader in the field of military protection, precision instrument transportation protection, valuables transportation protection, medical assistance, etc.

[0033] The first buffer plate 201 is provided with a buffer outer sleeve 214 on the outside, and the middle parts of the left and right sides of the buffer outer sleeve 214 are fixedly connected with connecting blocks 215, and the middle parts of the connecting blocks 215 are slidably connected with sliding columns 8. The buffer outer sleeve 214 further buffers and absorbs the acting force.

[0034] The left and right sides of the second buffer plate 301 are fixedly connected with a trapezoidal block 5, the outer side of the trapezoidal block 5 is fixedly connected with a sleeve 6, the inner side of the front end of the sleeve 6 is provided with a circular groove 7, the inner side of the circular groove 7 is slidably connected with a limiting circular block 9, the middle part of the front end of the limiting circular block 9 is fixedly connected with a sliding column 8, and the front end of the sliding column 8 is respectively fixedly connected to the left and right sides of the rear end of the bumper 1. Through the limiting effect of the sleeve 6, the circular groove 7 and the limiting circular block 9, the movement of the first buffer mechanism 2 and the second buffer mechanism 3 can be made more stable and reliable.

[0035] The upper and lower sides of the rear end of the single-port box 401 are fixedly connected with a connecting plate 405, and the top and bottom ends of the connecting plate 405 are provided with a plurality of connecting holes 406. The bumper 1 can be fixed to the front position of the new energy vehicle through the connecting plate 405 to ensure that when an accidental collision occurs, the injuries to the people on the new energy vehicle are reduced.

[0036] A plurality of protective steel pipes 10 are equidistantly arranged at the front end of the bumper 1. The protective steel pipes 10 are injection-molded with toughened polypropylene material. The protective steel pipes 10 can offset a portion of the impact and collision force.

[0037] The left and right sides of the rear middle of the bumper 1 are respectively fixedly connected to the front end of the hydraulic buffer 213, and the rear end of the bumper 1 near the middle of the left and right sides is respectively fixedly connected with a concave block 212. The hydraulic buffer 213 is used to relieve and conduct the force.

[0038] The cylinder bottom end of the left first telescopic rod 206 is connected to the left inner wall of the left first inner groove 202, and the cylinder bottom end of the right first telescopic rod 206 is connected to the right inner wall of the right first inner groove 202. Through the effect of the first inner groove 202, the first telescopic rod 206 is fixed more stably and securely.

[0039] The cylinder bottom end of the left second telescopic rod 306 is connected to the left inner wall of the left second inner groove 302, and the cylinder bottom end of the right second telescopic rod 306 is connected to the right inner wall of the right second inner groove 302. Through the effect of the second inner groove 302, the second telescopic rod 306 is fixed more stably and firmly.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-absorbing bumper for a new energy vehicle, comprising a bumper (1), characterized in that: A first buffer mechanism (2) is provided at the rear end of the bumper (1), a second buffer mechanism (3) is provided at the rear end of the first buffer mechanism (2), and an impact elimination mechanism (4) is provided at the rear end of the second buffer mechanism (3); The first buffer mechanism (2) comprises a first buffer plate (201), the left and right parts of the front end of the first buffer plate (201) are both provided with first inner grooves (202), the top and bottom ends of the first inner groove (202) are both provided with first slide grooves (203), the first slide grooves (203) are both slidably connected with first sliders (204), the inner ends of the first sliders (204) are respectively fixedly connected to the upper and lower ends of a moving block (205), the inner sides of the moving blocks (205) are both fixedly connected to the top end of a rod body of a first telescopic rod (206), and the outer sides of the first telescopic rod (206) are both fixedly connected with first springs (207), the front end of the moving block (205) is fixedly connected to a triangular connecting piece (208), the middle part of the triangular connecting piece (208) is rotatably connected to one end of the first connecting column (209), the other end of the first connecting column (209) is rotatably connected to the rear end of the connecting bolt (210), the front end of the connecting bolt (210) is rotatably connected to one end of the second connecting column (211), the other end of the second connecting column (211) is rotatably connected to the rear end of the concave block (212), and the left and right sides of the middle part of the front end of the first buffer plate (201) are fixedly connected to hydraulic buffers (213); The second buffer mechanism (3) comprises a second buffer plate (301), the left and right parts of the front end of the second buffer plate (301) are both provided with second inner grooves (302), the top and bottom ends of the second inner groove (302) are both provided with second slide grooves (303), the second slide grooves (303) are both slidably connected with second sliders (304), the inner ends of the second sliders (304) are respectively fixedly connected to the upper and lower ends of the fixing blocks (305), the inner sides of the fixing blocks (305) are both fixedly connected to the top end of the rod body of the second telescopic rod (306), and the second telescopic rod (306) is connected to the second telescopic rod (306). The outer side of the retractable rod (306) is fixedly connected to a second spring (307), the upper and lower parts of the inner side of the second inner groove (302) are fixedly connected to a fixing rod (308), the outer side of the fixing rod (308) is slidably connected to the upper and lower parts of the left and right sides of the fixing block (305), the front end of the fixing block (305) is fixedly connected to a first external block (309), the front end of the first external block (309) is rotatably connected to one end of a connecting rod (310), and the other end of the connecting rod (310) is rotatably connected to the rear end of the second external block (311); The left and right sides of the second buffer plate (301) are fixedly connected to a trapezoidal block (5), the outer side of the trapezoidal block (5) is fixedly connected to a sleeve (6), the inner side of the front end of the sleeve (6) is provided with a circular groove (7), the inner side of the circular groove (7) is slidably connected to a limiting circular block (9), the middle part of the front end of the limiting circular block (9) is fixedly connected to a sliding column (8), and the front ends of the sliding columns (8) are respectively fixedly connected to the left and right sides of the rear end of the bumper (1).

2. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The impact elimination mechanism (4) comprises a single-port box (401), a placement groove (402) is provided on the inner side of the front end of the single-port box (401), a rubber plate (403) is provided on the inner rear end of the placement groove (402), and an ACF vibration damping plate (404) is provided on the front end of the rubber plate (403).

3. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: A buffer outer sleeve (214) is provided on the outer side of the first buffer plate (201), a connection block (215) is fixedly connected to the middle of the left and right sides of the buffer outer sleeve (214), and a sliding column (8) is slidably connected to the middle of the connection block (215).

4. The energy-absorbing bumper for new energy vehicles according to claim 2, characterized in that: The upper and lower sides of the rear end of the single-port box (401) are fixedly connected to connecting plates (405), and the top and bottom ends of the connecting plates (405) are provided with a plurality of connecting holes (406).

5. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: A plurality of protective steel pipes (10) are equidistantly arranged at the front end of the bumper (1), and the protective steel pipes (10) are injection-molded using toughened polypropylene material.

6. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The left and right sides of the middle of the rear end of the bumper (1) are respectively fixedly connected to the front end of the hydraulic buffer (213), and the rear end of the bumper (1) near the middle of the left and right sides is respectively fixedly connected with a concave block (212).

7. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The bottom end of the cylinder of the first telescopic rod (206) on the left side is connected to the left inner wall of the first inner groove (202) on the left side, and the bottom end of the cylinder of the first telescopic rod (206) on the right side is connected to the right inner wall of the first inner groove (202) on the right side.

8. The energy-absorbing bumper for new energy vehicles according to claim 1, characterized in that: The bottom end of the cylinder of the second telescopic rod (306) on the left side is connected to the left inner wall of the second inner groove (302) on the left side, and the bottom end of the cylinder of the second telescopic rod (306) on the right side is connected to the right inner wall of the second inner groove (302) on the right side.

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