1. A bumper collision avoidance structure, comprising:

the inner side of the outer plate is provided with a buffer layer in a fitting manner;

the energy absorption cavity is fixed on the inner side of the outer plate, a plurality of movable shafts penetrate through the energy absorption cavity towards one end of the outer plate at intervals, the movable shafts are designed to be of a two-section structure along the axial direction, the middle parts of the two sections are connected through first rotating joints, elastic folded plates are fixed on the two sections of the movable shafts respectively, the elastic folded plates penetrate through the front end of the energy absorption cavity and are unfolded in an outward-expanding splayed shape in an initial state, two ends of each movable shaft penetrate through the side end of the energy absorption cavity and are respectively and coaxially fixed with a main gear, the middle parts of the adjacent main gears are meshed with slave gears, and the middle parts of the elastic folded plates on different sides of the adjacent movable shafts are connected with;

the rear cross beam is fixed on the inner side of the outer plate and is positioned at the rear end of the energy absorption cavity;

the throttle valve is connected to the energy absorption cavity;

a closed air storage space is formed by the elastic folded plate, the movable connecting part and the energy absorption cavity, and when the outer plate is impacted, the elastic folded plate can be pushed to deform in an inward steering mode so as to compress air storage and overflow through the throttle valve to discharge air.

2. The bumper anti-collision structure according to claim 1, wherein the movable connecting portion is a connecting shaft, the connecting shaft is designed to be of a two-segment structure along an axial direction, the two segments are connected with each other by a second rotating joint, and top ends of the elastic folded plates at two sides are respectively and fixedly connected to two segments of side walls of the connecting shaft.

3. The bumper structure of claim 1, wherein the movable connecting portion is a flexible cross plate, and top ends of the flexible flaps on two sides are respectively connected to side ends of the flexible cross plate.

4. A bumper structure according to claim 3 wherein the top ends of the resilient flaps are hingedly connected to the side ends of the resilient cross plate.

5. The bumper anti-collision structure according to claim 1, wherein a detection block is fixed at an eccentric position of the main gear at one end, a displacement sensor is arranged at a position close to one side of the detection block and used for detecting towards the detection block, the displacement sensor is electrically connected with a regulator, the regulator is used for controlling a suction tube in an automobile tire, an air outlet end of the suction tube is connected with the energy absorption cavity through a conduit, and when the elastic folding plate is internally pressed and turned, the main gear is driven to turn to drive the detection block to turn away so as to trigger the displacement sensor, so that the regulator is controlled to open the suction tube and roll through the tire so as to press air into the energy absorption cavity.

6. The bumper collision avoidance structure according to claim 5, wherein said displacement sensor is further electrically connected to an alarm, and said detection block is rotated away to trigger said displacement sensor and simultaneously trigger said alarm to alarm.

7. A bumper structure according to claim 1, wherein the angle between the resilient flaps on both sides of the same shaft is between 60 ° and 100 °.

Background

With the development of the automobile industry, automobile bumpers have also been revolutionized as an important safety device. Admittedly, the integrated bumper made of steel or aluminum alloy has good rigid protection performance for automobiles, but lacks the effects of buffering, collapsing and energy absorption, and has serious injury to pedestrians, drivers and passengers. Therefore, the conventional automobile bumper keeps the original protection function, and also needs to be harmonious and uniform with the automobile body shape, light in weight and better application performance.

Aiming at the problems, the existing bumpers at the front and rear ends of the automobile are made of plastic materials instead, and comprise three parts, namely an outer plate, a buffer material, a cross beam and the like, so that the existing bumpers have better rigidity and decoration property, and can also play a certain role in buffering, namely absorbing and mitigating external impact force, but the existing bumpers are still single in structure and have insufficient buffering, collapsing and energy-absorbing effects, so that the capability of better reducing the harm of drivers and passengers and pedestrians in impact is still a continuous pursuit target, and the actual impact often does not cover the whole bumper area, but only can be the impact of a single local area, so that the transversely designed bumpers cannot play the whole buffering, collapsing and energy-absorbing effects, namely the lateral areas which are not directly impacted do not fully participate in the buffering, collapsing and energy-absorbing effects, so that the buffering efficiency and the safety protection efficiency are lower, and the continuous optimization and improvement on the bumper structure are necessary, to accommodate higher security requirements.

Disclosure of Invention

In view of the above, one or more embodiments of the present disclosure are directed to a bumper impact structure to achieve higher energy absorption for bumper impact.

In view of the above objects, one or more embodiments of the present specification provide a bumper collision prevention structure including:

the inner side of the outer plate is provided with a buffer layer in a fitting manner;

the energy absorption cavity is fixed on the inner side of the outer plate, a plurality of movable shafts are arranged at intervals in the energy absorption cavity towards one end of the outer plate in a penetrating mode, the movable shafts are designed to be of a two-section structure along the axial direction, the middle of the two sections are connected through a first rotary joint, elastic folded plates are fixed on the two sections of the movable shafts respectively, the elastic folded plates penetrate through the front end of the energy absorption cavity and are unfolded in an outward-expanding splayed mode in an initial state, two ends of each movable shaft penetrate through the side end of the energy absorption cavity and are respectively and coaxially fixed with a main gear, a slave gear is meshed between the adjacent main gears, and movable connecting portions are connected between the elastic folded plates on different sides of the adjacent movable shafts;

the rear cross beam is fixed on the inner side of the outer plate and is positioned at the rear end of the energy absorption cavity;

the throttle valve is connected to the energy absorption cavity;

a closed air storage space is formed by the elastic folding plate, the movable connecting part and the energy absorption cavity, and when the outer plate is impacted, the elastic folding plate can be pushed to deform in an inward steering mode so as to compress air storage and overflow through the throttle valve to discharge air.

Preferably, the movable connecting part is a connecting shaft, the connecting shaft is designed to be of a two-section structure along the axial direction, the middle of the two sections of the connecting shaft are connected through a second rotating joint, and the top ends of the elastic folded plates on the two sides are respectively and fixedly connected to the two side walls of the connecting shaft.

Preferably, the movable connecting part is an elastic transverse plate, and the top ends of the elastic folded plates at the two sides are respectively connected to the side ends at the two sides of the elastic transverse plate.

Preferably, the top end of the elastic flap and the side end of the elastic transverse plate are connected in a hinged mode.

Preferably, a detection block is fixed at the eccentric position of the main gear at one end, a displacement sensor is arranged on one side, close to the detection block, of the detection block and used for detecting the direction of the detection block, the displacement sensor is electrically connected with a regulator, the regulator is used for controlling a suction pipe in an automobile tire, an air outlet end of the suction pipe is connected with the energy absorption cavity through a guide pipe, and when the elastic folded plate is pressed and turned, the main gear is driven to turn, so that the detection block is driven to turn away, the displacement sensor is triggered, the regulator is triggered to control the opening of the suction pipe, and air is pressed into the energy absorption cavity through the tire in a rolling mode.

Preferably, the displacement sensor is also electrically connected with an alarm, and the detection block is rotated away to trigger the displacement sensor and simultaneously trigger the alarm to alarm.

Preferably, the angle between the elastic flaps on both sides of the same movable shaft is between 60 ° and 100 °.

From the above, it can be seen that in the bumper anti-collision structure provided in one or more embodiments of the present disclosure, by providing an outer plate, a buffer layer is attached to an inner side of the outer plate, wherein the outer plate and the buffer layer can be made of plastic materials to satisfy a certain impact toughness and a buffer effect, thereby facilitating lightweight design, and not causing great damage to pedestrians and drivers, the outer plate and the buffer layer are easy to be depressed while maintaining the integrity of the whole structure, so as to transmit impact force inward, an energy-absorbing cavity is fixed to the inner side of the outer plate, a plurality of movable shafts are arranged at intervals towards one end of the outer plate in the energy-absorbing cavity, the movable shafts are designed to be two-segment structures along an axial direction, and the two segments are connected by a first rotary joint, so that the two segments can rotate in a relatively free axial direction, elastic folding plates are respectively fixed to the two segments of the movable shafts, and penetrate through front ends of the energy-absorbing cavity, the splayed unfolding under the initial state, simultaneously, two ends of the movable shaft penetrate through the side ends of the energy absorption cavity and are respectively and coaxially fixed with a main gear, the middle of the adjacent main gear is engaged with a slave gear, the middle of the elastic folding plate on different sides of the adjacent movable shaft is connected with a movable connecting part, thereby forming a closed air storage space through the elastic folding plate, the movable connecting part and the energy absorption cavity, when the outer plate is impacted, no matter the impact of any single local area is carried out, so that the outer plate and the buffer layer are inwards sunken and transmitted, the corresponding elastic folding plate which is splayed can be pushed and pressed, so that the elastic folding plate is elastically deformed and further inwards turned and tiled, and the main gears on the two side ends are synchronously driven to rotate relatively, so that the main gears are driven to synchronously rotate through the meshing transmission of the slave gears, so that the lateral elastic folding plates are synchronously turned and deformed inwards even if not impacted, the energy absorption device is characterized in that the energy absorption device is used for fully participating in buffering and crumpling energy absorption together and compressing air storage together, and is used for releasing air through slow overflow of a throttle valve, so that combined buffering of an outer plate and a buffer layer, elastic deformation, bending and steering of an elastic folded plate, synchronous and fully participating in steering deformation and synchronous compression air storage of a lateral elastic folded plate are combined, all parts are mutually related and buckled in a ring mode, the effects of further greatly improving buffering and crumpling energy absorption are achieved, namely, large absorption and relaxation of external impact force are achieved, buffering and anti-collision effects are achieved, harm of drivers and passengers and pedestrians is better reduced, meanwhile, the device serves as a last safety device, a rear cross beam is fixed to the rear end of an energy absorption cavity on the inner side of the outer plate, the total strength is kept complete, and higher safety protection performance is achieved.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a movable shaft according to an embodiment of the present invention.

In the figure: 1. an outer plate; 2. a buffer layer; 3. an energy absorption cavity; 4. a movable shaft; 5. an elastic folded plate; 6. a main gear; 7. a slave gear; 8. a movable connection portion; 9. a rear cross member; 10. a throttle valve; 11. a detection block; 12. a displacement sensor; 13. a conduit.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

A bumper anti-collision structure is disclosed, as shown in figures 1 to 3, and comprises an outer plate 1, a buffer layer 2 is attached to the inner side of the outer plate 1, an energy absorption cavity 3 is fixed to the inner side of the outer plate 1, a plurality of movable shafts 4 are arranged at intervals towards one end of the outer plate 1 in a penetrating manner in the energy absorption cavity 3, the movable shafts 4 are designed in a two-section structure along the axial direction, the middle of the two sections are connected through a first rotary joint, two sections of the movable shafts 4 are respectively fixed with elastic folded plates 5, the elastic folded plates 5 penetrate through the front end of the energy absorption cavity 3 and are unfolded in an outward splayed shape in an initial state, two ends of each movable shaft 4 penetrate through the side end of the energy absorption cavity 3 and are respectively and coaxially fixed with a main gear 6, the middle of each adjacent main gear 6 is engaged with a secondary gear 7, the middle of each elastic folded plate 5 which is not on the same side of the adjacent movable shaft 4 is connected with a movable connecting part 8, a rear cross beam 9 is fixed to the inner side of the outer plate 1, and the rear cross beam 9 is positioned at the rear end of the energy absorption cavity 3, the energy-absorbing cavity 3 is connected with a throttle valve 10, a closed air storage space is formed by the elastic folded plate 5, the movable connecting part 8 and the energy-absorbing cavity 3, and when the outer plate 1 is impacted, the elastic folded plate 5 can be pushed and pressed to deform in an inward turning mode so as to compress air storage and overflow through the throttle valve 10 to discharge air.

The invention is provided with an outer plate 1, a buffer layer 2 is attached to the inner side of the outer plate 1, wherein the outer plate 1 and the buffer layer 2 can be made of plastic materials to meet certain impact toughness and buffer action, thereby being beneficial to light-weight design and not causing great injury to pedestrians and drivers, the outer plate 1 and the buffer layer 2 are easy to dent and can keep the integral structure complete so as to transmit impact force inwards, an energy-absorbing cavity 3 is fixed on the inner side of the outer plate 1, a plurality of movable shafts 4 are arranged at intervals on the energy-absorbing cavity 3 towards one end of the outer plate 1, the movable shafts 4 are designed in a two-section structure along the axial direction, and the middle of the two sections are connected through a first rotary joint so as to enable the two sections to rotate freely and axially relatively, elastic folding plates 5 are respectively fixed on the two sections of the movable shafts 4, the elastic folding plates 5 penetrate through the front end of the outer plate 3 and are unfolded in a splayed shape under the initial state, meanwhile, two ends of the movable shaft 4 penetrate through the side ends of the energy absorption cavity 3 and are respectively and coaxially fixed with a main gear 6, the middle of the adjacent main gear 6 is engaged with a slave gear 7, the middle of the elastic folding plate 5 on different sides of the adjacent movable shaft 4 is connected with a movable connecting part 8, so that a closed air storage space is formed by the elastic folding plate 5, the movable connecting part 8 and the energy absorption cavity 3, when the outer plate 1 is impacted and no matter the impact is in any single local area, the outer plate 1 and the buffer layer 2 are inwards sunken and transmitted, the corresponding elastic folding plate 5 which is splayed can be pushed and pressed, so that the elastic folding plate 5 is elastically deformed and further inwards turned and tiled, and the main gears 6 on the two side ends are synchronously driven to rotate relatively, so that the main gears 6 are driven to synchronously rotate through the meshing transmission of the slave gears 7, so that the lateral elastic folding plates 5 are not impacted, the outer plate 1 and the buffer layer 2 are combined to buffer, the elastic folded plate 5 is elastically deformed, bent and turned, the lateral elastic folded plate 5 synchronously and fully participates in steering deformation and synchronously participates in compression and air storage, all the parts are mutually associated and are buckled with each other in a ring mode to further improve the effects of buffering and crumpling energy absorption, namely, the external impact force is greatly absorbed and relaxed to achieve buffering and anti-collision effects, the harm of drivers and passengers and pedestrians is better reduced, meanwhile, the rear cross beam 9 is fixed at the rear end of the energy absorption cavity 3 on the inner side of the outer plate 1 to keep the total strength complete, and the higher safety protection performance is achieved.

As an optional embodiment of the present invention, the movable connection portion 8 is a connection shaft, the connection shaft is designed to be a two-section structure along an axial direction, and the middle of the two sections is connected through a second rotary joint, so that the two sections can rotate relatively freely and axially, and the top ends of the elastic folding plates 5 at the two sides are respectively fixedly connected to the two sections of side walls of the connection shaft, so as to realize the closed movable connection of the elastic folding plates 5 at the two sides, and can rotate relatively freely.

As an optional embodiment of the present invention, the movable connecting portion 8 is an elastic transverse plate, top ends of the elastic folding plates 5 at two sides are respectively connected to side ends at two sides of the elastic transverse plate, due to the property that both the elastic transverse plate and the elastic folding plates 5 can be elastically deformed, so that the elastic transverse plate and the elastic folding plates 5 can freely rotate at a relatively small angle while realizing the closed connection, and the elastic connection between the elastic transverse plate and the elastic folding plates 5 at two sides is utilized to further facilitate the buffering, collapsing and energy absorbing effects.

As an alternative embodiment of the invention, the top end of the elastic flap 5 and the side end of the elastic transverse plate are connected in an articulated manner by means of a hinge element to further facilitate a stable free steering.

As an alternative embodiment of the present invention, a detecting block 11 is fixed on the eccentric position of the main gear 6 at one end, a displacement sensor 12 is arranged on the side of the detecting block 11 for detecting the direction of the detecting block 11, the displacement sensor 12 is electrically connected with a regulator, wherein the regulator is used for controlling a suction pipe in the automobile tire, the air outlet end of the suction pipe is connected with the energy absorption cavity 3 through a conduit 13, when the elastic folding plate 5 is pressed and turned, the main gear 6 is driven to turn to drive the detection block 11 to rotate away, to trigger the displacement sensor 12, to trigger the regulator control to open the suction tube, and to roll through the tyre, so as to continuously press air into the energy absorption cavity 3 to realize synchronous triggering to self-inflate the energy absorption cavity 3 when the impact is automatically detected, so as to recover the gas storage and automatically push the sunken outer plate 1, the buffer layer 2 and the elastic folded plate 5 to rebound and reset gradually.

In an alternative embodiment of the present invention, the displacement sensor 12 is further electrically connected to an alarm, and the detection block 11 is rotated away to trigger the displacement sensor 12, and simultaneously trigger the alarm to alarm when the impact is automatically detected.

As an alternative embodiment of the present invention, the angle between the elastic flaps 5 on both sides of the same movable shaft 4 is between 60 ° and 100 °.

In the bumper anti-collision structure disclosed by the invention, when in use, a buffer layer 2 is attached to the inner side of an outer plate 1, an energy absorption cavity 3 is fixed to the inner side of the outer plate 1, a plurality of movable shafts 4 are arranged at intervals towards one end of the outer plate 1 in a penetrating manner in the energy absorption cavity 3, two sections of the movable shafts 4 are respectively fixed with an elastic folded plate 5, the elastic folded plate 5 penetrates through the front end of the energy absorption cavity 3 and is unfolded in an outward splayed shape in an initial state, meanwhile, two ends of each movable shaft 4 penetrate through the side end of the energy absorption cavity 3 and are respectively and coaxially fixed with a main gear 6, the middle of the adjacent main gear 6 is meshed with a driven gear 7, the middle of the elastic folded plate 5 on different sides on the adjacent movable shafts 4 is connected with a movable connecting part 8, so that a closed air storage space is formed by the elastic folded plate 5, the movable connecting part 8 and the, so that the outer plate 1 and the buffer layer 2 are both pushed and pressed against the corresponding splayed elastic folded plate 5 to elastically deform the elastic folded plate 5 and further turn inwards to be tiled, and synchronously drive the main gears 6 at the two side ends to rotate relatively, so as to drive the main gears 6 to rotate synchronously through the meshing transmission of the slave gears 7, so that the lateral elastic folded plates 5 are also synchronously turned inwards to deform even if not impacted, so as to fully participate in buffering and collapsing energy absorption together, and compress air storage together, so as to slowly overflow and release air through the throttle valve 10, thereby further greatly improving the effects of buffering and collapsing energy absorption.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.