An automobile bumper

Abstract

The application discloses an automobile bumper and particularly relates to the technical field of automobile bumpers, which comprises a mounting bracket, the two ends of the mounting bracket are bent in the same direction, the outer side wall of the mounting bracket is attached with a main air bag, the top and bottom outer walls of the mounting bracket are attached with auxiliary air bags, the main air bag and the auxiliary air bags are jointly attached with an outer shell, each auxiliary air bag is communicated with a slow-release assembly, the inner cavity of the main air bag is divided into at least two strip-shaped gas storage cavities, the gas storage cavity closest to the mounting bracket is a holding cavity, and the remaining gas storage cavities are release cavities, each release cavity is provided with an independent pipeline connected with the slow-release assembly. When low-speed collision occurs, the outer shell is elastically deformed, the main air bag and the auxiliary air bags release gas for buffering, the probability of hard contact between the human body and the vehicle body is reduced, and the safety of pedestrians is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive bumper technology, and specifically relates to an automotive bumper. Background Technology

[0002] Car bumpers are structural components installed at the front and rear of a vehicle. Their main function is to absorb and disperse energy during low-speed collisions, reducing damage to the vehicle body and protecting pedestrian safety. They are typically made of plastic, steel, or aluminum. Modern bumpers also integrate components such as fog lights and sensors, enhancing the vehicle's safety and functionality. Bumper design must balance aesthetics and practicality; it is an indispensable part of the automotive safety system.

[0003] While existing car bumpers are made of plastic and can absorb and disperse energy in low-speed collisions, the human body is far more vulnerable than a car. Pedestrians still face a significant probability of injury in low-speed collisions with vehicles, posing a considerable threat to their lives. Therefore, a new type of car bumper is needed. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses an automobile bumper.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A car bumper includes a mounting bracket with both ends bent in the same direction. A main airbag is attached to the outer wall of the mounting bracket, and auxiliary airbags are attached to the top and bottom outer walls of the mounting bracket. The main airbag and auxiliary airbags are jointly bonded to a shell. Each auxiliary airbag is connected to a slow-release component. The inner cavity of the main airbag is divided into at least two elongated air storage chambers. The air storage chamber closest to the mounting bracket is a retaining chamber, and the remaining air storage chambers are release chambers. Each release chamber is provided with an independent pipe connected to the slow-release component.

[0007] As a preferred embodiment of this invention, the outer shell encloses the main airbag and the auxiliary airbag.

[0008] As a preferred embodiment of this utility model, each of the sustained-release components includes a valve body with an air inlet communicating with the main airbag or the auxiliary airbag. A sliding seat is slidably installed in the middle of the valve body, and the conical plug of the sliding seat is adapted to the conical surface of the air inlet of the valve body. A conical impeller is rotatably installed on the sliding seat. A spring is connected to one end of the sliding seat away from the air inlet of the valve body, and the other end of the spring abuts against the valve body. An exhaust port is provided at the end of the valve body where the spring is installed.

[0009] As a preferred embodiment of this utility model, a bearing is coaxially fixedly sleeved in the middle of the sliding seat, and the outer ring of the bearing is coaxially fixedly connected to the conical impeller.

[0010] As a preferred embodiment of this utility model, the valve body is inlaid with an annular barrier that partially covers the conical impeller.

[0011] As a preferred embodiment of this utility model, the valve body is provided with a groove adapted to the protrusion of the sliding seat.

[0012] As a preferred embodiment of this utility model, both ends of the mounting bracket are fixedly connected to connecting seats, and the connecting seats are provided with insertion holes for connecting to the vehicle body and mounting through holes.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In the event of a low-speed collision, the outer shell undergoes elastic deformation. The main airbag is equipped with multiple release chambers, each with different pressures. The gas in the main airbag is released in stages to buffer the impact and keep the gas in the chambers stable, forming a flexible connection between the outer shell and the mounting bracket. When the secondary airbag is compressed, it also releases gas through the slow-release component to buffer the impact, reducing the probability of hard contact between the human body and the vehicle body and improving pedestrian safety.

[0015] 2. When the gas release component of this application releases gas buffer, under the restriction of the annular enclosure, the gas is forced to drive the conical impeller to rotate before being discharged. The spring can automatically adjust the opening of the air inlet of the valve body according to the pressure on the conical plug of the sliding seat. The gas drives the conical impeller to rotate, which consumes energy and reduces the gas flow speed. This facilitates the formation of an effective buffer when the main airbag or the auxiliary airbag is squeezed (the buffer time is extended and it is not easy to rebound), and it is not easy to be suddenly squeezed and explode. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is an exploded view of the overall embodiment of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the main airbag and the sustained-release assembly according to an embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional view of the slow-release component according to an embodiment of the present invention;

[0020] Figure 5 This is an exploded view of the sliding seat, bearing, and conical impeller of an embodiment of this utility model.

[0021] List of identifiers in attached diagrams:

[0022] 1. Outer shell;

[0023] 2. Main airbag; 201. Release chamber; 202. Holding chamber;

[0024] 3. Secondary airbag; 4. Mounting bracket;

[0025] 5. Slow-release assembly; 501. Valve body; 502. Sliding seat; 503. Bearing; 504. Conical impeller; 505. Enclosure; 506. Spring;

[0026] 6. Connecting seat. Detailed Implementation

[0027] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0028] Please see Figure 1-5 A car bumper includes a mounting bracket 4, with both ends of the bracket bent in the same direction. The bending of the mounting bracket 4 facilitates the bumper wrapping around the corners of the car body. A main airbag 2 is attached to the outer wall of the mounting bracket 4, and auxiliary airbags 3 are attached to the top and bottom outer walls of the mounting bracket 4. The main airbag 2 and auxiliary airbags 3 are jointly bonded to a shell 1. The shell 1 encloses the main airbag 2 and auxiliary airbags 3. Each auxiliary airbag 3 is connected to a slow-release component 5. The inner cavity of the main airbag 2 is divided into at least two elongated air storage chambers. The air storage chamber closest to the mounting bracket 4 is a retaining chamber 202, and the remaining air storage chambers are release chambers 201. Each release chamber 201 is provided with an independent pipe connected to the slow-release component 5. In the embodiment shown in the attached drawings, the main airbag 2 is provided with two release chambers 201 and one retaining chamber 202.

[0029] The outer shell 1 is a tough, thin shell that is not easily deformed after being supported by the inflated main airbag 2 and auxiliary airbag 3. When the main airbag 2 and auxiliary airbag 3 are deflated by impact, the outer shell 1 can undergo elastic deformation.

[0030] Both the main airbag 2 and the auxiliary airbag 3 are equipped with inflation / deflation valves (not shown in the attached embodiment), which facilitate re-inflation after a collision to lift the outer shell 1 (when the bumper components are not damaged), or for replenishing airbags after long-term leakage. The air storage chamber of the main airbag 2 is equipped with an independent inflation / deflation valve.

[0031] Each slow-release component 5 includes a valve body 501 with an air inlet communicating with either the main airbag 2 or the auxiliary airbag 3. A sliding seat 502 is slidably mounted in the middle of the valve body 501, and the conical plug of the sliding seat 502 is adapted to the conical surface of the air inlet of the valve body 501. A conical impeller 504 is rotatably mounted on the sliding seat 502. A spring 506 is connected to one end of the sliding seat 502 away from the air inlet of the valve body 501, and the other end of the spring 506 abuts against the valve body 501. When the main airbag 2 or the auxiliary airbag 3 is not compressed, the spring 506 compresses the conical plug of the sliding seat 502 to tightly block the air inlet of the valve body 501. An exhaust port is provided at the end of the valve body 501 where the spring 506 is mounted, and the opening direction of the exhaust port is perpendicular to the axis of the valve body 501.

[0032] A bearing 503 is coaxially fixedly sleeved in the middle of the sliding seat 502, and the outer ring of the bearing 503 is coaxially fixedly connected to the conical impeller 504. An annular barrier 505 is embedded in the middle of the valve body 501, partially covering the conical impeller 504. When gas is supplied from the inlet to the outlet of the valve body 501, the gas is forced to drive the conical impeller 504 to rotate before being discharged under the restriction of the annular barrier 505.

[0033] The valve body 501 has a groove that adapts to the protrusion of the sliding seat 502, which is used to adapt to the linear sliding of the sliding seat 502.

[0034] Both ends of the mounting bracket 4 are fixedly connected to connecting seats 6, and the connecting seats 6 are provided with insertion holes for connection with the vehicle body and mounting through holes. The insertion holes of the connecting seats 6 are inserted into the vehicle body, and the bolts pass through the mounting through holes of the connecting seats 6 and are threaded into the vehicle body.

[0035] Working principle:

[0036] When a low-speed collision occurs, the outer shell 1 undergoes elastic deformation, compressing the main airbag 2 or the auxiliary airbag 3. At this time, the main airbag 2 releases gas sequentially through the slow-release component 5 from the release chamber 201 on the outside. When the auxiliary airbag 3 is compressed, it also releases gas through the slow-release component 5 for buffering. Since the main airbag 2 is provided with multiple release chambers 201, the pressure in the multiple release chambers 201 is different. The gas in the main airbag 2 is released in stages for buffering, keeping the gas in the chamber 202 stable and forming a flexible connection between the outer shell 1 and the mounting bracket 4.

[0037] When the gas buffer is released by the slow-release component 5, the air inlet of the valve body 501 delivers gas to the exhaust port. Under the restriction of the annular enclosure 505, the gas is forced to drive the conical impeller 504 to rotate before being discharged. The spring 506 can automatically adjust the opening of the air inlet of the valve body 501 according to the pressure on the conical plug of the sliding seat 502.

[0038] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A car bumper, comprising a mounting bracket (4), characterized in that, The two ends of the mounting bracket (4) are bent in the same direction. The outer side wall of the mounting bracket (4) is attached to the main airbag (2), and the top and bottom outer walls of the mounting bracket (4) are attached to the auxiliary airbags (3). The main airbag (2) and the auxiliary airbags (3) are jointly bonded to the outer shell (1). Each of the auxiliary airbags (3) is connected to the slow-release component (5). The inner cavity of the main airbag (2) is divided into at least two elongated air storage chambers. The air storage chamber closest to the mounting bracket (4) is the holding chamber (202), and the remaining air storage chambers are the release chambers (201). Each of the release chambers (201) is provided with an independent pipe connected to the slow-release component (5).

2. The car bumper according to claim 1, characterized in that, The outer shell (1) encloses the main airbag (2) and the auxiliary airbag (3).

3. A car bumper according to claim 1, characterized in that, Each of the sustained-release components (5) includes a valve body (501) with an air inlet communicating with the main airbag (2) or the auxiliary airbag (3). A sliding seat (502) is slidably mounted in the middle of the valve body (501), and the conical plug of the sliding seat (502) is adapted to the conical surface of the air inlet of the valve body (501). A conical impeller (504) is rotatably mounted on the sliding seat (502). A spring (506) is connected to one end of the sliding seat (502) away from the air inlet of the valve body (501), and the other end of the spring (506) abuts against the valve body (501). An exhaust port is provided at the end of the valve body (501) where the spring (506) is mounted.

4. A car bumper according to claim 3, characterized in that, The sliding seat (502) is coaxially fixedly sleeved with a bearing (503) in the middle, and the outer ring of the bearing (503) is coaxially fixedly connected with the conical impeller (504).

5. A car bumper according to claim 3, characterized in that, The valve body (501) has an annular enclosure (505) embedded in the middle, which partially covers the conical impeller (504).

6. A car bumper according to claim 3, characterized in that, The valve body (501) has a groove adapted to the protrusion of the sliding seat (502).

7. A car bumper according to claim 1, characterized in that, Both ends of the mounting bracket (4) are fixedly connected to the connecting seat (6), and the connecting seat (6) is provided with the insertion hole and the mounting through hole for connecting to the vehicle body.

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