CN106043188A - Two-stage bumper body energy-absorbing bumper - Google Patents

Abstract

The invention discloses a double-stage energy-absorbing bumper, which includes a primary bumper and a secondary bumper, the primary bumper and the secondary bumper are fixedly connected by bolts, the primary bumper and the secondary bumper There is a buffer groove between the rods, and a one-way movement sleeve, a large air spring and a small air spring are arranged in the buffer groove. The structure of the present invention is simple, compact and reasonable in design. Absorb the impact pressure from the outside, and due to the action of the single-motion sleeve, it can effectively prevent the secondary collision problem during emergency stop, and the airbag in the secondary cylinder can prevent the primary bar from being damaged due to excessive collision force When it fails, it plays a further buffer and protection role, so that the collision force can be minimized, effectively ensuring the safety of personal property, greatly improving the safety of driving, and being easy to use and popularize.

Description

Energy-absorbing bumper with double-stage bar body

technical field

The invention relates to the technical field of automobile body accessories, in particular to a double-stage energy-absorbing bumper.

Background technique

The car bumper is a safety device that absorbs and slows down the impact of the outside world and protects the front and rear of the car body. Most of the existing car bumpers are rigidly connected with the car, and are easily damaged when a collision occurs. Therefore, the impact resistance of the car bumper is relatively low, and it is difficult to minimize the force of the collision; The problem is that by strengthening the strength of the bumper itself, the vehicle damage is minimized during the collision, but after the collision, the sudden stop of the vehicle is likely to cause a secondary collision, making it difficult to guarantee the safety of people and property in the car . In addition, because the bumper is mainly rigidly connected to the chassis, it can absorb a certain amount of impact energy when a collision occurs, but most of the impact energy is transmitted to the vehicle body, thereby easily causing damage to the vehicle body and casualties.

Therefore, there are still many limitations in the automobile bumper at this stage.

Contents of the invention

The technical problem to be solved by the present invention is to provide a double-stage energy-absorbing bumper with anti-strength, buffering and impact-absorbing energy, so as to overcome the deficiencies in the prior art.

The present invention is achieved like this:

An energy-absorbing bumper with a double-stage bar body, which includes a first-stage bar body and a second-stage bar body, and the first-stage bar body and the second-stage bar body are fixedly connected by bolts, and the first-stage bar body and the second-stage bar body A buffer groove is provided, and a one-way movement sleeve, a large air spring and a small air spring are arranged in the buffer groove.

In the aforementioned double-stage energy-absorbing bumper, the top view surface of the first-stage bumper is a "∩"-shaped structure, and the second-stage bumper is placed at the opening of the first-stage bumper and passed through the first-stage bumper. The bolts at the opening of the body are connected and fixed with the first-level bar body, and a buffer groove is formed between the first-level bar body and the second-level bar body.

In the aforementioned two-stage bar body energy-absorbing bumper, the one-way motion sleeve is arranged in the middle of the buffer tank and is perpendicular to the front end of the first-stage bar body, and at least two large air springs are symmetrically arranged on the one-way motion sleeve The two sides of the barrel are perpendicular to the front end of the primary bar body.

In the aforementioned double-stage bumper body energy-absorbing bumper, the secondary bumper body is a hollow square structure, and the two ends of the front side of the secondary bumper body are rounded, and the airbag is installed in the hollow of the secondary bumper body. Inside, one end of the small air spring is fixed on the rounded part of the secondary rod body, and the other end is fixed on both sides of the primary rod body.

In the aforementioned double-stage energy-absorbing bumper, three airbag switches are provided, which are respectively arranged in the middle of the front end of the secondary bar body and correspond to the position of the one-way movement sleeve and the front end of the secondary bar body is rounded. and corresponds to the position of the small air spring.

In the aforementioned double-stage energy-absorbing bumper, rounded reinforcing ribs are provided at the two rounded corners of the first-stage bar body, and reinforcing ribs are evenly distributed at the front end of the first-stage bar body on both sides of the first-stage bar body. Each is equipped with oblique reinforcing ribs, which can greatly increase the strength of the first-level bar body by setting the reinforcing ribs, so that the first-level bar body will not be easily damaged during a collision.

The working principle of the present invention is: the single motion sleeve can limit the movement of the first-level bar body to the inner side, which can effectively avoid the problem of secondary collision, and the large and small air springs can play a role of buffering, and finally The main thing is to be able to absorb most of the impact energy. There are rounded reinforcing ribs at the two rounded corners of the first-level bar body. There are two reinforcing ribs on the first-level bar body and oblique reinforcing ribs on both sides. These ribs are used to strengthen the first-level bar body. strength, so that the first-level bar body will not be easily damaged during a collision; the second-level bar body is equipped with an airbag, and there are three airbag switches on the second-level bar body. If the body is destroyed and fails, the airbag switch will be triggered at this time to make the airbag work, thereby playing a role of further buffering and protection.

When a car collides head-on, the first-stage cylinder body will bear the impact pressure during the collision, and the impact pressure will be transmitted to the one-way motion sleeve and two large air springs through the one-stage lever body. At this time, the one-way motion sleeve acts as a The single movement on the inner side is beneficial to prevent secondary collisions during emergency braking; the two large air springs are subjected to the impact pressure, on the one hand, they make a single movement to the inner side to ease the impact, and on the other hand absorb most of the impact. Impact energy, so as to achieve the purpose of energy absorption.

When a car collides sideways, first the impact pressure of the side collision is borne by the first-stage bar body, and the impact pressure is transmitted to the two small air springs through the first-stage cylinder body, and the two small air springs are affected by the side impact pressure on the one hand. Performing a single movement inward to ease the impact, on the other hand absorb most of the impact energy, so as to achieve the purpose of energy absorption.

When the force of the collision is too large, because the first-level bar body will not be able to withstand such a large impact pressure, it will be damaged and fail. At this time, any one of the three airbag switches will be connected in parallel, so only Touching any switch will make the airbag work), so that the airbag works, and the inflated airbag instantly fills the interior of the entire secondary cylinder, thereby further playing the role of cushioning and protection.

Due to the adoption of the above technical solution, compared with the prior art, the present invention has simple and compact structure, reasonable design, convenient and fast assembly, reliable connection, and can effectively alleviate and absorb the impact pressure from the outside. There are rounded reinforcing ribs, reinforcing ribs and oblique reinforcing ribs on the first-level bar body to enhance the strength of the first-level bar body; at the same time, there are single-sport sleeves and large and small air springs in the buffer tank. The single-motion sleeve can effectively prevent the secondary collision problem that occurs when the emergency stop occurs. The large and small air springs can play a buffer role and the main thing is that they can absorb most of the impact energy, thereby playing the role of buffering and energy absorption. ; and the safety airbag in the secondary cylinder body can prevent the collision force from being too large and lead to further buffering and protection when the primary bar body is damaged and fails, so as to minimize the collision force and effectively ensure the safety of personal and property. The driving safety of the automobile is greatly improved, and it is easy to use and popularize. The invention has the advantages of simple structure, convenient manufacture and strong practicability.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention.

detailed description

Embodiment of the present invention: a double-stage bar body energy-absorbing bumper, as shown in the drawings, it includes a primary bar body 1 and a secondary bar body 2, and the primary bar body 1 and secondary bar body 2 pass through The bolts 3 are fixedly connected, and a buffer groove 4 is provided between the primary lever body 1 and the secondary lever body 2, and a one-way motion sleeve 5, a large air spring 6 and a small air spring 7 are arranged in the buffer groove 4.

Wherein the top view surface of the primary bar body 1 is a "∩"-shaped structure, the secondary bar body 2 is placed at the opening of the primary bar body 1, and the bolt 3 arranged at the opening of the primary bar body 2 is connected to the primary bar body. 1 is connected and fixed, and a buffer groove 4 is formed between the first-level bar body 1 and the second-level bar body 2. The one-way movement sleeve 5 is arranged in the middle of the buffer groove 4 and is perpendicular to the front end of the first-level bar body 1, at least two The large air spring 6 is symmetrically arranged on both sides of the one-way movement sleeve 5 and is perpendicular to the front end of the first-level lever body 1. The second-level lever body 2 is a hollow square structure, and the two ends of the front side of the second-level lever body 2 are rounded. 13. The airbag 11 is installed in the hollow of the secondary bar body 2. One end of the small air spring 7 is fixed at the rounding 13 of the secondary bar body 2, and the other end is fixed on both sides of the primary bar body 1. The safety There are three airbag switches 12, which are respectively arranged in the middle of the front end of the secondary lever body 2 and correspond to the position of the one-way motion sleeve 5, and at the rounded 13 position of the front end of the secondary lever body 2 and correspond to the position of the small air spring 7. The two rounded corners of the bar body 1 are respectively provided with rounded reinforcing ribs 8, and the front end of the first-level bar body 1 is evenly provided with reinforcing ribs 9, and the two sides of the first-level bar body 1 are respectively provided with oblique reinforcing ribs 10.

specific use

When a car collides head-on, the first-stage cylinder body 1 bears the impact pressure during the collision, and the impact pressure is transmitted to the one-way motion sleeve 5 and two large air springs 6 through the first-stage bar body 1. The sleeve 5 makes a single movement inward to prevent secondary collisions during emergency braking; the two large air springs 6 are subjected to the impact pressure and make a single movement inward to ease the impact. On the one hand, it absorbs most of the impact energy, so as to achieve the purpose of energy absorption.

When a car collides sideways, first the first-stage bar body 1 bears the impact pressure of the side collision, and the impact pressure is transmitted to the two small air springs 7 through the first-stage cylinder body 1, and the two small air springs 7 receive the side impact pressure On the one hand, the single movement is performed to the inside to ease the impact, and on the other hand, it absorbs most of the impact energy, so as to achieve the purpose of energy absorption.

When the force impact pressure of the collision is too large, because the primary lever body 1 will not be able to withstand such a large impact pressure and cause its damage and failure, any one of the three airbag switches 12 will be touched at this time, thereby making the airbag 11 Working, the inflated airbag 11 instantly fills the inside of the entire secondary cylinder body 2, thereby further playing the role of buffering and protection.

This embodiment has a simple, compact and reasonable design, convenient and quick assembly, reliable connection, can effectively alleviate and absorb the impact pressure from the outside, and can also prevent secondary collisions during emergency braking, and can also be used in collision shocks When the force is large, it can improve the impact resistance of the car bumper, minimize the impact force, effectively ensure the safety of people and property, and greatly improve the driving performance of the car, so it has a great market prospect.

The description of the above scheme is an invention that can be understood and used by those of ordinary skill in the technical field. Those skilled in the art can obviously make various modifications to the implementation. Therefore, the present invention is not limited to the above-mentioned practical scheme. Improvements and modifications made by those skilled in the art according to the method of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims (6)

1. A double-stage bar body energy-absorbing bumper, characterized in that it includes a primary bar body (1) and a secondary bar body (2) and the primary bar body (1) and secondary bar body ( 2) Fixedly connected by bolts (3), a buffer groove (4) is provided between the primary lever body (1) and the secondary lever body (2), and a one-way movement sleeve (5) is provided in the buffer groove (4) ), large air spring (6) and small air spring (7). 2. A double-stage energy-absorbing bumper according to claim 1, characterized in that: the top view surface of the first-stage bar body (1) is a "∩"-shaped structure, and the second-stage bar body (2) Place it at the opening of the first-level bar body (1) and connect and fix it with the first-level bar body (1) through the bolts (3) set at the opening of the first-level bar body (2). Buffer grooves (4) are formed between the secondary rod bodies (2). 3. A two-stage bar body energy-absorbing bumper according to claim 1, characterized in that: the one-way movement sleeve (5) is arranged in the middle of the buffer tank (4) and is connected to the first-stage bar body (1) The front end is vertical, and at least two large air springs (6) are symmetrically arranged on both sides of the one-way movement sleeve (5) and are perpendicular to the front end of the primary bar body (1). 4. The double-stage energy-absorbing bumper according to claim 1, characterized in that: the secondary bumper (2) is a hollow square structure, and the front of the secondary bumper (2) Both ends of the side are rounded (13), the airbag (11) is installed in the hollow of the secondary bar body (2), and one end of the small air spring (7) is fixed at the rounded (13) of the secondary bar body (2) , and the other end is fixed on both sides of the primary bar body (1). 5. The double-stage energy-absorbing bumper according to claim 4, characterized in that there are three airbag switches (12), which are respectively arranged in the middle of the front end of the secondary pole (2) and Corresponding to the position of the one-way movement sleeve (5) and the rounding (13) at the front end of the secondary lever body (2) and corresponding to the position of the small air spring (7). 6. A double-stage energy-absorbing bumper according to claim 1, characterized in that: rounded corner reinforcing ribs (8) are provided at the two rounded corners of the first-stage bar body (1). Reinforcing ribs (9) are uniformly arranged on the front end of the first-level bar body (1), and oblique reinforcing ribs (10) are respectively provided on both sides of the first-level bar body (1).