Energy absorption device of automobile bumper

Abstract

The utility model relates to the technical field of automobile accessories, and discloses an energy absorption device of an automobile bumper, which comprises an anti-collision beam, a hydraulic cylinder body is fixedly connected to the upper surface of the anti-collision beam, a buffer air bag is fixedly connected to the upper surface of the hydraulic cylinder body, and an oil inlet and outlet pipe is fixedly communicated to the side surface of the hydraulic cylinder body. The side end of the oil inlet and outlet pipe fixedly communicates with a liquid storage bag. Through the arrangement of the buffer air bag, the U-shaped plate, the inflation box, the air pushing block, the strip-shaped groove, the limiting block, the observation hole, the transparent graduated scale and the three-way air pipe, when the first transverse pipe and the second transverse pipe in the three-way air pipe are communicated, air in the inflation box can be pushed to the buffer air bag by pushing the air pushing block, and the air in the inflation box can be automatically inflated by observing the pushed distance of the air pushing block. Therefore, whether the buffering air bag is abraded or not can be visually judged, maintenance personnel can accurately judge whether the buffering air bag is abraded or not, and maintenance of the energy absorption device is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an energy absorbing device for an automobile bumper. Background Art

[0002] The automobile bumper is a safety device that absorbs and mitigates external impact and protects the front and rear parts of the automobile body. At present, the energy absorption device of the automobile bumper on the market is mainly composed of an outer plate, an energy absorption module and an anti-collision beam, and the energy absorption module is composed of an air cavity and a hydraulic cavity. When the outer plate is hit, the air in the air cavity and the hydraulic solution in the hydraulic cavity can absorb and buffer the impact force. For example, a graded energy absorption device for automobile bumpers published in Chinese Patent Publication No. CN110304003A, however, when inspecting the energy absorption device, the maintenance personnel only judge whether the air cavity is damaged by visual observation, and often fail to repair the damaged air cavity in time due to inaccurate observation. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, the energy absorption device of the automobile bumper on the market is mainly composed of an outer plate, an energy absorption module and an anti-collision beam, and the energy absorption module is composed of an air cavity and a hydraulic cavity. When the outer plate is hit, the air in the air cavity and the hydraulic solution in the hydraulic cavity can absorb and buffer the impact force. However, when inspecting the energy absorption device, since the maintenance personnel only judge whether the air cavity is damaged by naked eye observation, the damaged air cavity is often not repaired in time due to inaccurate observation. Therefore, an energy absorption device for an automobile bumper is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An energy absorption device for a car bumper comprises an anti-collision beam, the upper surface of the anti-collision beam is fixedly connected to a hydraulic cylinder body, the upper surface of the hydraulic cylinder body is fixedly connected to a buffer airbag, the side of the hydraulic cylinder body is fixedly connected to an inlet and outlet oil pipe, the side end of the inlet and outlet oil pipe is fixedly connected to a liquid storage bag, the bottom of the liquid storage bag is fixedly connected to the upper surface of the anti-collision beam, the upper surface of the anti-collision beam is fixedly connected to a U-shaped plate, the upper surface of the U-shaped plate is fixedly connected to an inflatable box, and the inner wall of the inflatable box is provided with a push air Block, strip grooves are provided on the upper and lower sides of the air pushing block, and limit blocks are fixedly connected to the upper and lower sides of the inner wall of the inflation box, the surface of the limit block contacts the inner wall of the strip groove, an observation hole is provided on the front of the inflation box, and a transparent scale is fixedly connected to the inner wall of the observation hole, the side of the inflation box, the side of the buffer airbag and the upper surface of the hydraulic cylinder body are fixedly connected with three-way pipes, the upper surface of the buffer airbag is fixedly connected with an outer plate, and a piston block is fitted on the inner wall of the hydraulic cylinder body.

[0006] Preferably, the three-way air pipe includes a three-way valve, one end of the three-way valve and the side of the inflation box are fixedly connected with a first horizontal pipe, one end of the three-way valve and the side of the buffer airbag are fixedly connected with a second horizontal pipe, and one end of the three-way valve and the upper surface of the hydraulic cylinder body are fixedly connected with a vertical pipe.

[0007] Preferably, a threaded hole is opened inside the anti-collision beam, the inner wall of the threaded hole is threadedly connected to a threaded cylinder, the inner wall of the threaded cylinder is fixedly connected to a baffle, the bottom of the outer plate is fixedly connected to a cylinder, and springs are fitted on the upper surface of the anti-collision beam and the bottom of the outer plate.

[0008] Preferably, the centers of the threaded cylinder, the cylinder and the spring are all on the same vertical line.

[0009] Preferably, a rotating block is fixedly connected to the surface of the threaded barrel.

[0010] Preferably, the length of the strip groove is the same as the length of the limit block.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model is provided with a buffer airbag, a U-shaped plate, an air charging box, an air pushing block, a strip groove, a limit block, an observation hole, a transparent scale and a three-way air pipe. When the first transverse pipe is connected to the second transverse pipe in the three-way air pipe, the air in the air charging box can be pushed to the buffer airbag by pushing the air pushing block. By observing the distance that the air pushing block is pushed, it can be intuitively judged whether the buffer airbag is worn, and then the maintenance personnel can accurately judge whether the buffer airbag is worn, so that the maintenance of the energy absorption device is more accurate.

[0013] (2) The utility model provides a threaded hole, a threaded barrel, a baffle, a cylinder, a spring and a rotating block. When the thrust of the spring on the outer plate decreases due to aging, the distance between the baffle and the outer plate can be reduced by rotating the threaded barrel with the cooperation of the threaded barrel and the threaded hole, and the thrust of the spring on the outer plate can be restored to a suitable size, so that maintenance personnel do not need to replace the aged spring, thereby reducing the maintenance cost of the energy absorption device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a front view of the structure of the utility model;

[0016] Figure 3 It is a top view of the anti-collision beam in the utility model;

[0017] Figure 4 It is a top view of the hydraulic cylinder body in the utility model;

[0018] Figure 5 It is a side view of the U-shaped plate in the utility model;

[0019] Figure 6 It is a front view of the inflatable box body in the utility model;

[0020] Figure 7 It is a top view of the thrust block in the utility model;

[0021] Figure 8 It is a front view of the three-way vent in the utility model;

[0022] Fig. 9 It is a top view of the threaded barrel in the utility model.

[0023] In the figure: 1. anti-collision beam; 2. hydraulic cylinder body; 3. cushion airbag; 4. oil inlet and outlet pipes; 5. liquid storage bag; 6. U-shaped plate; 7. inflation box; 8. air push block; 9. strip groove; 10. limit block; 11. observation hole; 12. transparent scale; 13. three-way air pipe; 131. three-way valve; 132. first horizontal pipe; 133. second horizontal pipe; 134. vertical pipe; 14. outer plate; 15. threaded hole; 16. threaded barrel; 17. baffle; 18. cylinder; 19. spring; 20. rotating block; 21. piston block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Embodiment 1:

[0027] Reference Figure 1-8, an energy absorption device for a car bumper, comprising an anti-collision beam 1, a hydraulic cylinder body 2 is fixedly connected to the upper surface of the anti-collision beam 1, a buffer airbag 3 is fixedly connected to the upper surface of the hydraulic cylinder body 2, an inlet and outlet oil pipe 4 is fixedly connected to the side of the hydraulic cylinder body 2, a liquid storage bag 5 is fixedly connected to the side end of the inlet and outlet oil pipe 4, the hydraulic cylinder body 2 is connected to the liquid storage bag 5 through the inlet and outlet oil pipe 4, and the hydraulic oil can flow between the hydraulic cylinder body 2 and the liquid storage bag 5, the bottom of the liquid storage bag 5 is fixedly connected to the upper surface of the anti-collision beam 1, a U-shaped plate 6 is fixedly connected to the upper surface of the anti-collision beam 1, an inflatable box 7 is fixedly connected to the upper surface of the U-shaped plate 6, an inner wall of the inflatable box 7 is provided with an air pushing block 8, and strip grooves 9 are provided on the upper and lower sides of the air pushing block 8. The upper and lower sides of the inner wall of the box 7 are fixedly connected with limit blocks 10, the surface of the limit blocks 10 contacts the inner wall of the strip groove 9, the length of the strip groove 9 is the same as the length of the limit blocks 10, and the limit blocks 10 cooperate with the strip groove 9 to make the air pushing block 8 unable to be separated from the inflation box 7. An observation hole 11 is provided on the front of the inflation box 7, and a transparent scale 12 is fixedly connected to the inner wall of the observation hole 11. Through the transparent scale 12, the user can intuitively judge the distance moved by the air pushing block 8. The side of the inflation box 7, the side of the buffer airbag 3 and the upper surface of the hydraulic cylinder body 2 are fixedly connected with three ventilation pipes 13, the upper surface of the buffer airbag 3 is fixedly connected with an outer plate 14, and the inner wall of the hydraulic cylinder body 2 is fitted with a piston block 21.

[0028] The three-way air pipe 13 includes a three-way valve 131, one end of the three-way valve 131 and the side of the inflation box 7 are fixedly connected with a first transverse pipe 132, one end of the three-way valve 131 and the side of the cushioning airbag 3 are fixedly connected with a second transverse pipe 133, one end of the three-way valve 131 and the upper surface of the hydraulic cylinder body 2 are fixedly connected with a vertical pipe 134, and the connection or disconnection among the first transverse pipe 132, the second transverse pipe 133 and the vertical pipe 134 is controlled by the three-way valve 131.

[0029] Embodiment 2:

[0030] Reference Figure 1-9A threaded hole 15 is provided inside the anti-collision beam 1, and a threaded cylinder 16 is threadedly connected to the inner wall of the threaded hole 15, and a baffle 17 is fixedly connected to the inner wall of the threaded cylinder 16, and a cylinder 18 is fixedly connected to the bottom of the outer plate 14. The upper surface of the anti-collision beam 1 and the bottom of the outer plate 14 are both fitted with a spring 19, and the centers of the threaded cylinder 16, the cylinder 18 and the spring 19 are all on the same vertical line, and a rotating block 20 is fixedly connected to the surface of the threaded cylinder 16. When the thrust of the spring 19 on the outer plate 14 decreases due to aging, the distance between the baffle 17 and the outer plate 14 can be reduced by rotating the threaded cylinder 16 under the cooperation of the threaded cylinder 16 and the threaded hole 15, and the thrust of the spring 19 on the outer plate 14 can be restored to an appropriate size, so that the maintenance personnel do not need to replace the aged spring 19, thereby reducing the maintenance cost of the energy absorption device. At the same time, the rotating block 20 makes it more convenient for the user to rotate the threaded cylinder 16.

[0031] In the utility model, when the user uses the energy absorption device, the anti-collision beam 1 is first fixed to the frame, and then the second transverse tube 133 is connected to the vertical tube 134 through the three-way valve 131, and the first transverse tube 132 is disconnected. When the outer plate 14 is impacted, the cushioning airbag 3 is deformed by the impact force, and the impact force is absorbed and buffered by the deformed cushioning airbag 3. At the same time, the air in the cushioning airbag 3 can be pushed into the hydraulic cylinder body 2 through the second transverse tube 133 and the vertical tube 134 through the deformed cushioning airbag 3, and the piston block 21 is moved by air pressure. At this time, the hydraulic solution in the hydraulic cylinder body 2 is pushed by the moving piston block 21, and the impact force is absorbed and buffered by the hydraulic solution. When the outer panel 14 is not subjected to external force, the thrust of the spring 19 on the outer panel 14 causes the distance between the outer panel 14 and the anti-collision beam 1 to return to the initial value. When the maintenance personnel inspect the energy absorption device, they first connect the first cross tube 132 with the second cross tube 133 by turning the three-way valve 131, and disconnect the vertical tube 134. At this time, the cushion airbag 3 is connected with the inflation box 7 through the first cross tube 132 and the second cross tube 133, and then the air in the inflation box 7 is pushed into the cushion airbag 3 by pushing the air pushing block 8. When the distance moved by the air pushing block 8 reaches the threshold and cannot be moved, it means that the cushion airbag 3 is not damaged. When the moving distance of the air pushing block 8 is greater than the threshold, it means that the cushion airbag 3 is damaged.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. An energy absorbing device for a car bumper, comprising an anti-collision beam (1), characterized in that: The upper surface of the anti-collision beam (1) is fixedly connected to a hydraulic cylinder body (2), the upper surface of the hydraulic cylinder body (2) is fixedly connected to a buffer airbag (3), the side of the hydraulic cylinder body (2) is fixedly connected to an oil inlet and outlet pipe (4), the side end of the oil inlet and outlet pipe (4) is fixedly connected to a liquid storage bag (5), the bottom of the liquid storage bag (5) is fixedly connected to the upper surface of the anti-collision beam (1), the upper surface of the anti-collision beam (1) is fixedly connected to a U-shaped plate (6), the upper surface of the U-shaped plate (6) is fixedly connected to an inflation box (7), the inner wall of the inflation box (7) is provided with an air push block (8), the upper and lower sides of the air push block (8) are both opened A strip groove (9) is provided, and the upper and lower sides of the inner wall of the inflation box (7) are fixedly connected to limit blocks (10), the surface of the limit blocks (10) contacts the inner wall of the strip groove (9), the front of the inflation box (7) is provided with an observation hole (11), the inner wall of the observation hole (11) is fixedly connected to a transparent scale (12), the side of the inflation box (7), the side of the buffer airbag (3) and the upper surface of the hydraulic cylinder body (2) are fixedly connected to a three-way pipe (13), the upper surface of the buffer airbag (3) is fixedly connected to an outer plate (14), and the inner wall of the hydraulic cylinder body (2) is fitted with a piston block (21).

2. The energy absorbing device for a vehicle bumper according to claim 1, characterized in that: The three-way air pipe (13) comprises a three-way valve (131), one end of the three-way valve (131) and the side of the inflation box (7) are both fixedly connected with a first transverse pipe (132), one end of the three-way valve (131) and the side of the cushioning airbag (3) are both fixedly connected with a second transverse pipe (133), and one end of the three-way valve (131) and the upper surface of the hydraulic cylinder body (2) are both fixedly connected with a vertical pipe (134).

3. The energy absorbing device for a vehicle bumper according to claim 1, characterized in that: A threaded hole (15) is provided inside the anti-collision beam (1), a threaded tube (16) is threadedly connected to the inner wall of the threaded hole (15), a baffle (17) is fixedly connected to the inner wall of the threaded tube (16), a cylinder (18) is fixedly connected to the bottom of the outer plate (14), and a spring (19) is fitted on the upper surface of the anti-collision beam (1) and the bottom of the outer plate (14).

4. The energy absorbing device for a vehicle bumper according to claim 3, characterized in that: The centers of the threaded cylinder (16), the cylinder (18) and the spring (19) are all on the same vertical line.

5. The energy absorbing device for a vehicle bumper according to claim 3, characterized in that: A rotating block (20) is fixedly connected to the surface of the threaded barrel (16).

6. The energy absorbing device for a vehicle bumper according to claim 1, characterized in that: The length of the strip groove (9) and the length of the limiting block (10).

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