CN114261358A - Vehicle rear-end collision buffer structure and vehicle - Google Patents
Vehicle rear-end collision buffer structure and vehicle Download PDFInfo
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- CN114261358A CN114261358A CN202111522478.7A CN202111522478A CN114261358A CN 114261358 A CN114261358 A CN 114261358A CN 202111522478 A CN202111522478 A CN 202111522478A CN 114261358 A CN114261358 A CN 114261358A
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Abstract
The embodiment of the application provides a vehicle rear-end collision buffer structure and vehicle relates to vehicle safety technical field for solve the problem that the vehicle rear-end collision buffer structure can't recover after being struck. The vehicle rear-end collision buffer structure provided by the embodiment of the application comprises an energy absorption module and a reset mechanism. The energy absorption module is used for being arranged on a vehicle body of a vehicle, the energy absorption module can move relative to the vehicle body of the vehicle in the vehicle running direction, the energy absorption module comprises a front anti-collision piece and a rear anti-collision piece which are opposite, the front anti-collision piece is located in front of the rear anti-collision piece along the vehicle running direction, and the front anti-collision piece is connected with the rear anti-collision piece through a buffer piece. The reset mechanism is used for being fixedly connected to a vehicle body of a vehicle, and an acting end of the reset mechanism is connected with the energy absorption module and used for applying force towards the rear of the vehicle to the energy absorption module. The vehicle rear-end collision buffer structure provided by the embodiment of the application is used for being installed behind a vehicle to buffer impact in the process of a rear-end collision accident of the vehicle.
Description
Technical Field
The application relates to the technical field of vehicle safety, in particular to a vehicle rear-end collision buffer structure and a vehicle.
Background
The rear-end collision of the vehicle is a typical traffic accident, has high occurrence probability, has serious threat to personal safety, and is easy to cause serious consequences particularly for the rear-end collision of a truck. In order to alleviate the impact of collision in the process of rear-end collision accidents of vehicles, the related art discloses a rear-end collision buffer structure of a vehicle, which is used for being fixed at the position close to the rear of the vehicle and comprises a front plate, a rear plate and an elastic piece. The front plate and the rear plate are arranged along the driving direction of the vehicle, the front plate is fixed on the body of the vehicle, the rear plate is connected with the front plate through an elastic piece, and the rear plate is positioned behind the front plate. In the process of rear-end collision of the vehicle, the head of the vehicle positioned behind collides with the rear plate firstly, and the rear plate can extrude the elastic piece after being collided and moves towards the direction close to the front plate. In this process, the elastic deformation of the elastic member can cushion the impact of the collision.
However, this vehicle rear-end collision buffer structure has a problem that the impact of the vehicle collision is finally received by the front panel during the rear-end collision, and the force applied to the front panel is large, which easily causes problems such as deformation of the front panel and breakage of the joint between the front panel and the vehicle, and the vehicle rear-end collision buffer structure is likely to be permanently damaged by the collision, cannot be restored, and is large in loss.
Disclosure of Invention
In view of this, the embodiments of the present application provide a rear-end collision buffer structure for a vehicle and a vehicle, so as to solve the problem that the rear-end collision buffer structure cannot be restored after being impacted.
In order to achieve the above object, a first aspect of the embodiments of the present application provides a vehicle rear-end collision buffer structure, which includes an energy absorption module and a return mechanism. The energy absorption module is arranged on a vehicle body of a vehicle, can move relative to the vehicle body of the vehicle in the vehicle running direction, and comprises a front anti-collision piece and a rear anti-collision piece which are opposite, wherein the front anti-collision piece is positioned in front of the rear anti-collision piece along the vehicle running direction, and the front anti-collision piece is connected with the rear anti-collision piece through a buffer piece; the reset mechanism is used for being fixedly connected to a vehicle body of a vehicle, and an acting end of the reset mechanism is connected with the energy absorption module and used for applying force towards the rear of the vehicle to the energy absorption module.
Furthermore, the resetting mechanism comprises a pressure cylinder and an action rod, the pressure cylinder is fixedly connected to the vehicle body of the vehicle along the vehicle running direction, one end of the action rod slides in the pressure cylinder in a sealing mode, the other end of the action rod is connected with the energy absorption module, pressure media are communicated in the pressure cylinder, and the action rod can move towards the rear of the vehicle along the pressure cylinder by increasing the pressure media in the pressure cylinder so as to push the energy absorption module to move towards the rear of the vehicle.
Further, the interior of the pressure tube is adapted to communicate with the tank or tank of the vehicle.
Further, an action lever is attached to a front surface of the front bumper.
Further, the action lever is hinged to the front surface of the front bumper.
Furthermore, a mounting seat is formed at one end, far away from the energy absorption module, of the pressure cylinder, a mounting hole is formed in the mounting seat, and a fastening piece penetrates through the mounting hole and is used for fixedly connecting the mounting seat with a vehicle body.
Furthermore, a first sliding block is formed on the front anti-collision piece and used for being connected with the vehicle body in a sliding mode along the vehicle running direction, and a second sliding block is formed on the rear anti-collision piece and used for being connected with the vehicle body in a sliding mode along the vehicle running direction.
Further, a flexible buffer layer is arranged on the rear surface of the rear bumper.
Further, the flexible buffer layer completely covers the rear surface of the rear bumper.
Further, the flexible buffer layer is made of foam or rubber.
Further, the bolster includes the spring that extends along vehicle direction of travel, and the one end and the preceding anticollision piece of spring are connected, and the other end is connected with back anticollision piece.
Further, the buffer part further comprises a damping rod, the damping rod is arranged outside the damping rod in a spring sleeve mode, one end of the damping rod is connected with the front anti-collision part, and the other end of the damping rod is connected with the rear anti-collision part.
Further, the buffer piece further comprises a buffer lining arranged on the rear surface of the front anti-collision piece, and the ends of the spring and the damping rod are abutted against the buffer lining.
Furthermore, the rear surface of the front anti-collision piece is provided with a lining mounting hole corresponding to the buffer lining, and the buffer lining is arranged in the lining mounting hole.
Furthermore, a spring, a damping piece and a buffer bush form a group of buffer pieces, and a plurality of groups of buffer pieces are arranged between the front anti-collision piece and the rear anti-collision piece.
A second aspect of the embodiments of the present application provides a vehicle, including a vehicle body and the vehicle rear-end collision buffer structure provided by the first aspect of the embodiments of the present application. The energy absorption module of the vehicle rear-end collision buffer structure is arranged at a position, close to the rear, of a vehicle body, the energy absorption module can move relative to the vehicle body in the vehicle running direction, and a reset mechanism of the vehicle rear-end collision buffer structure is fixedly connected with the vehicle body.
Further, the top of the energy absorption module is slidably coupled to the bottom of the vehicle body.
Further, the energy absorption module is in sliding connection with a rear side member of the vehicle body.
Furthermore, a T-shaped sliding groove is formed in the rear longitudinal beam, a T-shaped sliding block is correspondingly arranged on one side, facing the rear longitudinal beam, of the energy absorption module, and the energy absorption module can be connected with the rear longitudinal beam in a sliding mode through the T-shaped sliding block sliding in the T-shaped sliding groove.
The embodiment of the application provides a vehicle buffer structure that knocks into back, preceding anticollision piece is located the place ahead of back anticollision piece, the in-process of the rear-end collision accident takes place at the vehicle, the locomotive that is located the vehicle at rear can be at first collided with back anticollision piece, connect through the bolster between preceding anticollision piece and the back anticollision piece, back anticollision piece receives can remove to the direction that is close to preceding anticollision piece after the collision, the bolster can play the cushioning effect to the in-process that is close to the direction motion of preceding anticollision piece at back anticollision piece, and then the collision impact to the vehicle cushions. Energy-absorbing module in this application embodiment can remove the automobile body of relative vehicle in the vehicle direction of travel, and preceding anticollision piece is not the snap-on promptly on the automobile body of vehicle, and preceding anticollision piece can remove the automobile body of relative vehicle in the vehicle direction of travel, and current anticollision piece receives the direction removal that is close to back anticollision piece after the collision, and the bolster that is located between preceding anticollision piece and the back anticollision piece can exert thrust to preceding anticollision piece, and preceding anticollision piece can be at the effect of thrust removal forward. The action end of the reset mechanism is used for applying force towards the rear of the vehicle to the energy absorption module, and the action end of the reset mechanism can prevent the energy absorption module from moving forwards, so that the impact of vehicle collision is transmitted to the reset mechanism by the energy absorption module. The action end of the reset mechanism can move in the vehicle running direction, and has a certain buffering effect, so that the reset mechanism and one end of the vehicle body of the vehicle, which is fixed, and the front anti-collision piece can not be impacted greatly, and the damage is not easy to occur greatly. And after the collision is finished and two vehicles which have rear-end collision are separated, the action end of the reset mechanism can move backwards to push the energy-absorbing module to return to the position before collision, so that the vehicle rear-end collision buffer mechanism realizes the recovery after collision, can be repeatedly used, and has small loss.
Drawings
FIG. 1 is a schematic structural view of a vehicle body according to an embodiment of the present application;
fig. 2 is a perspective view of a vehicle rear-end collision buffer structure in an embodiment of the present application;
FIG. 3 is a front view of a vehicle rear-end collision bumper structure according to an embodiment of the present application;
FIG. 4 is a left side view of a vehicle rear-end collision bumper structure in an embodiment of the present application;
fig. 5 is a right side view of a vehicle rear-end collision buffer structure according to an embodiment of the present application.
Reference numerals:
1-a vehicle body; 11-vehicle head; 12-vehicle tail; 13-the bottom of the body; 14-rear longitudinal beam; 141-T-shaped grooves; 2-an energy-absorbing module; 21-front bumper; 211-a first slider; 212-front impact body; 214-bushing mounting holes; 22-rear bumper; 221-a second slider; 222-a rear bump body; 23-a buffer member; 231-a spring; 232-damping rod; 233-buffer bush; 24-a flexible buffer layer; 3-a reset mechanism; 31-a pressure cylinder; 311-a mount; 3111-mounting holes; 32-action bar; 321-the action end of the reset mechanism; a-vertical direction.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Vehicle rear-end collision is a typical traffic accident, and the occurrence probability is high. The rear-end collision of the truck and the special vehicle is a typical traffic accident, the occurrence probability is high, the threat to the personal safety is serious, and particularly the rear-end collision of the truck is easy to cause serious consequences. Specifically, the wheels of the truck are generally large, so that the truck body is relatively high, when a rear-end collision accident happens, a car easily drills into the lower portion of the truck body from the rear of the truck, the car is easily damaged seriously, and particularly for a long rear overhang truck, the drilling length of the car is large, and the damage is more serious.
In order to alleviate the impact of collision in the process of rear-end collision accidents of vehicles, the related art discloses a rear-end collision buffer structure of a vehicle, which is used for being fixed at the position close to the rear of the vehicle and comprises a front plate, a rear plate and an elastic piece. The front plate and the rear plate are arranged along the driving direction of the vehicle, the front plate is fixed on the body of the vehicle, the rear plate is connected with the front plate through an elastic piece, and the rear plate is positioned behind the front plate. In the process of rear-end collision of the vehicle, the head of the vehicle positioned behind collides with the rear plate firstly, and the rear plate can extrude the elastic piece after being collided and moves towards the direction close to the front plate. In this process, the elastic deformation of the elastic member can cushion the impact of the collision.
However, this vehicle rear-end collision buffer structure has a problem that the impact of the vehicle collision is finally received by the front panel during the rear-end collision, and the force applied to the front panel is large, which easily causes problems such as deformation of the front panel and breakage of the joint between the front panel and the vehicle, and the vehicle rear-end collision buffer structure is likely to be permanently damaged by the collision, cannot be restored, and is large in loss. Particularly, when the vehicle buffer mechanism is arranged at the bottom of a vehicle body and used for preventing a car from entering the bottom of a truck, the front plate is often fixed with the bottom of the vehicle body only at the upper end and is of a cantilever beam type structure, and the joint of the front plate and the vehicle body is very weak and is difficult to bear large impact.
In view of this, in order to provide safety of the vehicle, please refer to fig. 1 and fig. 2, an embodiment of the present application provides a vehicle including a vehicle body 1 and a rear-end collision buffer structure. The energy absorption module 2 of the vehicle rear-end collision buffer structure is arranged at a position, close to the rear, of the vehicle body 1, the energy absorption module 2 can move relative to the vehicle body 1 in the vehicle running direction, and the resetting mechanism 3 of the vehicle rear-end collision buffer structure is fixedly connected with the vehicle body 1.
Referring to fig. 1 and 2, a vehicle rear-end collision buffer structure according to an embodiment includes an energy absorption module 2 and a return mechanism 3. The energy absorption module 2 is arranged on a vehicle body 1 of a vehicle, the energy absorption module 2 can move relative to the vehicle body 1 of the vehicle in the vehicle running direction, the energy absorption module 2 comprises a front anti-collision piece 21 and a rear anti-collision piece 22 which are opposite, the front anti-collision piece 21 is located in front of the rear anti-collision piece 22 in the vehicle running direction, and the front anti-collision piece 21 is connected with the rear anti-collision piece 22 through a buffer piece 23. The reset mechanism 3 is used for being fixedly connected to the vehicle body 1 of the vehicle, and an acting end 321 of the reset mechanism is connected with the energy absorption module 2 and is used for applying force towards the rear of the vehicle to the energy absorption module 2. According to the structure, the front bumper 21 is located in front of the rear bumper 22, in the process of rear-end collision of the vehicle, the head 11 of the vehicle located behind collides with the rear bumper 22 firstly, the front bumper 21 and the rear bumper 22 are connected through the buffer 23, the rear bumper 22 moves towards the direction close to the front bumper 21 after being collided, and the buffer 23 plays a role in buffering the process that the rear bumper 22 moves towards the direction close to the front bumper 21, so that collision impact of the vehicle is buffered. The energy absorption module 2 in the embodiment of the present application can move relative to the vehicle body 1 of the vehicle in the vehicle driving direction, that is, the front bumper 21 is not directly fixed to the vehicle body 1 of the vehicle, the front bumper 21 can move relative to the vehicle body 1 of the vehicle in the vehicle driving direction, the front bumper 21 moves in a direction close to the rear bumper 22 after being collided, the buffer 23 located between the front bumper 21 and the rear bumper 22 applies a thrust to the front bumper 21, and the front bumper 21 may move forward under the thrust. The action end 321 of the return mechanism is used for applying a force towards the rear of the vehicle to the energy-absorbing module 2, and the action end 321 of the return mechanism can prevent the energy-absorbing module 2 from moving forwards, so that the impact of vehicle collision is transmitted to the return mechanism 3 from the energy-absorbing module 2. The action end 321 of the reset mechanism can move in the vehicle running direction, and has a certain buffering effect, so that the front anti-collision piece 21 and the fixed end of the reset mechanism 3 and the vehicle body 1 of the vehicle cannot be greatly impacted, and the front anti-collision piece is not easily damaged. Moreover, after the two vehicles with rear-end collision are separated after the collision is finished, the action end 321 of the reset mechanism can move backwards to push the energy-absorbing module 2 to return to the position before the collision, so that the vehicle rear-end collision buffer mechanism realizes the recovery after the collision, can be repeatedly used for many times, and has small loss.
It should be noted that, referring to fig. 1 and 2, the forward movement refers to a movement in a direction approaching the vehicle head 11 in a direction perpendicular to the vertical direction a. The backward movement refers to a movement in a direction approaching the vehicle rear 12 in a direction perpendicular to the vertical direction a. The front in the traveling direction of the vehicle refers to a side of the vehicle in the traveling direction near the front end 11, and the rear in the traveling direction of the vehicle refers to a side of the vehicle in the traveling direction near the rear end 12, the traveling direction of the vehicle being perpendicular to the vertical direction a.
It should be noted that, referring to fig. 1 and 2, during a rear-end collision of the vehicle, the distance between the front bumper 21 and the rear bumper 22 changes more than the displacement of the action end 321 of the return mechanism. The effect end 321 of canceling release mechanical system moves for a short distance, is favorable to improving the reliability and the stability of the vehicle rear-end collision buffer structure, prevents that the rear anti-collision piece 22 from generating large displacement in the vehicle collision process, and the motion of the rear anti-collision piece 22 is stable. In addition, for the rear-end collision accident of the truck, if the car hits the rear bumper 22, and if the rear bumper 22 is displaced greatly, the car may still dig into the lower part of the truck body 1, and the digging distance is long, and the car is damaged seriously.
It should be noted that, if the impact on the rear bumper 22 is reduced by increasing the buffering distance between the front bumper 21 and the rear bumper 22, the length of the buffer 23 needs to be increased, and the longer distance of the buffer 23 affects the stability of the connection between the front bumper 21 and the rear bumper 22, and further affects the stability of the movement of the rear bumper 22 after the collision.
In some embodiments, referring to FIGS. 1 and 2, the top of the energy absorption module 2 is slidably coupled to the bottom 13 of the vehicle body. In such a structural form, the energy absorption module 2 is arranged at the bottom 13 of the vehicle body, so that the situation that the vehicle behind the vehicle enters the lower part of the vehicle body 1 of the vehicle in front of the vehicle in the rear-end collision accident of the vehicle is avoided.
The energy absorption module 2 can be moved in the direction of travel of the vehicle relative to the body 1 of the vehicle in a plurality of embodiments. For example, in some embodiments, the energy absorption module 2 is slidably coupled to the body 1 of the vehicle in the direction of travel of the vehicle. In some other embodiments, the energy-absorbing module 2 can also be suspended from the body 1 of the vehicle by means of a rope.
In some embodiments, referring to fig. 2, 3 and 4, the front bumper 21 is formed with a first slider 211, the first slider 211 is configured to be slidably connected with the vehicle body 1 along the vehicle traveling direction, the rear bumper 22 is formed with a second slider 221, and the second slider 221 is configured to be slidably connected with the vehicle body 1 along the vehicle traveling direction. With such a structure, the energy absorption module 2 is stably connected with the vehicle body 1, and the front anti-collision piece 21 and the rear anti-collision piece 22 move stably along the driving direction of the vehicle.
In some embodiments, the front bumper 21 includes a first slider 211, a front bumper body 212, and a first reel. The first slider 211 is connected with the vehicle body 1 in a sliding manner, the front anti-collision body 212 is connected with the buffer 23, the first reel is fixed with the first slider 211, and the front anti-collision body 212 is hung on the first reel through a rope wound on the first reel. In this configuration, the front impact body 212 is used for collision with the vehicle, and the swing of the rope in the vehicle traveling direction and the sliding of the first slider 211 both enable the front impact body 212 to move in the vehicle traveling direction. Specifically, when the vehicle collides with the front impact body 212, the rope wound on the first reel swings in the vehicle traveling direction, and then the rope is tensioned and pulls the first slider 211 to slide relative to the vehicle body 1. It is understood that, in order to ensure the stability of the installation of the front bumper 21, the length of the rope cannot be excessively long, the swinging distance of the rope in the vehicle traveling direction is small, and the rope is provided mainly for buffering the impact force by the swinging of the rope at the time of vehicle collision, thereby further enhancing the reliability of the vehicle rear-end collision buffer mechanism.
In some embodiments, the rear bumper 22 includes a second slider 221, a rear bumper body 222, and a second reel. The second slider 221 is slidably connected to the vehicle body 1, the rear impact body 222 is connected to the bumper 23, the second reel is fixed to the second slider 221, and the rear impact body 222 is hung on the second reel by a rope wound around the second reel. With this structure, the rear impact body 222 is used for collision with the vehicle, and the swinging of the rope in the vehicle traveling direction and the sliding of the second slider 221 can move the rear impact body 222 in the vehicle traveling direction. Specifically, when the vehicle collides with the rear impact body 222, the rope wound on the second reel swings in the vehicle traveling direction, and then the rope is tensioned and pulls the second slider 221 to slide relative to the vehicle body 1. It is understood that, in order to ensure the stability of the installation of the front impact member 22, the length of the rope cannot be excessively long, the swinging distance of the rope in the vehicle traveling direction is small, and the rope is provided mainly for buffering the impact force by the swinging of the rope at the time of vehicle collision, thereby further enhancing the reliability of the vehicle rear-end collision buffer mechanism.
On the basis that the top of the energy absorption module 2 is slidably connected with the bottom 13 of the vehicle body, in some embodiments, referring to fig. 2, 3 and 4, the front bumper 21 has a plate-shaped structure, the front bumper 21 is disposed along the width direction of the vehicle, a plurality of first sliders 211 are formed at the upper end of the front bumper 21, the plurality of first sliders 211 are arranged along the width direction of the vehicle, and each first slider 211 is slidably connected with the bottom 13 of the vehicle body. With such a structure, the sliding connection between the front bumper 21 and the vehicle is stable. On this basis, it is preferable that, in some embodiments, the number of the first sliders 211 is two, and the two sliders are located at both ends of the front bumper 21 in the vehicle width direction.
On the basis that the top of the energy absorption module 2 is slidably connected with the bottom 13 of the vehicle body, in some embodiments, referring to fig. 2, 3 and 4, the rear bumper 22 is a plate-shaped structure, the rear bumper 22 is arranged along the width direction of the vehicle, a plurality of second sliders 221 are formed at the upper end of the rear bumper 22, the plurality of second sliders 221 are arranged along the width direction of the vehicle, and each second slider 221 is slidably connected with the bottom 13 of the vehicle body. With such a structure, the sliding connection between the rear bumper 22 and the vehicle is stable. On this basis, in some embodiments, the number of the second sliders 221 is two, and the two sliders are located at both ends of the rear bumper 22 in the vehicle width direction.
In some embodiments, referring to FIGS. 2, 3 and 4, the energy absorption module 2 is slidably coupled to the rear side rail 14 of the vehicle body 1. In such a configuration, the rear side member 14 of the vehicle body 1 is a portion of the vehicle body 1 having a high strength and rigidity, and the energy-absorbing module 2 is mounted on the rear side member 14 and can be sufficiently supported. On the basis, in some embodiments, a T-shaped sliding groove is formed in the rear longitudinal beam 14, and a T-shaped slider (see reference numeral 211 or 221 in the figure, which is an embodiment thereof) is correspondingly disposed on a side of the energy-absorbing module 2 facing the rear longitudinal beam 14, so that the energy-absorbing module 2 and the rear longitudinal beam 14 can be slidably connected by the T-shaped slider sliding in the T-shaped sliding groove. On this basis, in some embodiments, the T-shaped slot 141 is provided on the side of the rear side member 14 facing the ground, the T-shaped slider is provided on the upper side of the energy-absorbing module 2, and the energy-absorbing module 2 is slidably attached below the rear side member 14.
Further, referring to fig. 5, the reset mechanism 3 includes a pressure cylinder 31 and an action rod 32, the pressure cylinder 31 is used for being fixedly connected to the vehicle body 1 of the vehicle along the vehicle traveling direction, one end of the action rod 32 is hermetically slid in the pressure cylinder 31, the other end of the action rod is connected with the energy absorption module 2, a pressure medium is communicated in the pressure cylinder 31, and the increase of the pressure medium in the pressure cylinder 31 can enable the action rod 32 to move towards the rear of the vehicle along the pressure cylinder 31 so as to push the energy absorption module 2 to move towards the rear of the vehicle. With such a structure, the other end of the action rod 32 faces the energy absorption module 2 towards the rear of the vehicle, and can support the energy absorption module 2. One end of the action rod 32 is sealed in the pressure cylinder 31 and is pushed by the pressure medium. The pressure medium can flow, so that one end of the action rod 32 connected with the energy absorption module 2 can move to a certain extent under the driving of the motion of the energy absorption module 2, the energy absorption module 2 can be buffered to a certain extent, and the impact on the energy absorption module 2 can be reduced. When the collision is over, the two vehicles which collide with each other are separated, the worker can convey pressure medium into the pressure cylinder 31, and the increase of the pressure medium in the pressure cylinder 31 can enable the action rod 32 to move towards the rear of the vehicle along the pressure cylinder 31 so as to push the energy absorption module 2 to return to the initial position.
Preferably, in some embodiments, referring to FIG. 5, to facilitate the mounting between the reaction bar 32 and the energy absorption module 2, in some embodiments, the reaction bar 32 is attached to the front surface of the front bumper 21. It should be noted that the connection of the other end of the reaction bar 32 to the energy absorption module 2 can be implemented in a variety of ways. May be welded, threaded, snapped, connected or abutted by fasteners, etc. In some embodiments, the action lever 32 is hinged to the front surface of the front bumper 21. In such a structure, in the process that the front bumper 21 moves under the thrust of the buffer 23, the joint of the action rod 32 and the front bumper 21 can rotate relatively without large stress.
In some embodiments, the pressure tube 31 is used internally to communicate with the tank or tank of the vehicle. With such a structure, oil in the oil tank or water in the water tank is used as the pressure medium in the pressure cylinder 31, and other structures for providing the pressure medium do not need to be arranged on the vehicle body 1, so that the arrangement of the vehicle rear-end collision buffer structure on the vehicle body 1 is facilitated. On this basis, in some embodiments, the pressure cylinder 31 and the action rod 32 constitute a hydraulic cylinder. Of course, in some other embodiments, the reset mechanism 2 may also be a pneumatic cylinder, which communicates with an air pump for introducing air into the cylinder.
In some embodiments, referring to fig. 5, an end of the pressure cylinder 31 away from the energy-absorbing module 2 is formed with a mounting seat 311, the mounting seat 311 is formed with a mounting hole 3111, and a fastening member is inserted into the mounting hole 3111 and is used for fixedly connecting the mounting seat 311 with the vehicle body 1. With the structure, the installation and the disassembly of workers are convenient. Specifically, in the process of installing the pressure cylinder 31, a worker may first install the energy absorption module 2 and the installation seat 311 on the vehicle body 1, and then fix one end of the pressure cylinder 31, which is far away from the installation seat 311, with the energy absorption module 2. On the basis, in some embodiments, the vehicle rear-end collision buffer mechanism is used for being installed on a truck, and the reset mechanism 3 is fixedly connected with a cross beam at the bottom of the truck.
Preferably, in some embodiments, referring to fig. 5, the mounting seat 311 is a plate-shaped structure, the mounting seat 311 is disposed along a direction perpendicular to a vehicle traveling direction, and the mounting hole 3111 penetrates through two opposite side walls of the mounting seat 311 along the vehicle traveling direction. With the structure, the force-bearing direction of the mounting seat 311 is the same as the extending direction of the fastener, and the reliability of the connection part of the mounting seat 311 and the vehicle is high. On this basis, in some embodiments, the number of the mounting holes 3111 is plural, and the plural mounting holes 3111 are arranged in an array on the layout of the mounting seat 311. Preferably, in some embodiments, the mounting seat 311 has a rectangular plate structure, the number of the mounting holes 3111 is four, and the four mounting holes 3111 are respectively located at four corners of the mounting seat 311.
Further, referring to fig. 5, in order to enhance the buffering effect of the vehicle rear-end collision buffering structure, in some embodiments, a flexible buffer layer 24 is disposed on the rear surface of the rear bumper 22. In this manner, the deformation of the flexible buffer layer 24 can buffer the impact of a vehicle collision. Specifically, in the vehicle rear-end collision process, a vehicle located behind collides with the flexible buffer layer 24 first, the impact force of the collision is buffered for the first time, the flexible buffer layer 24 transmits the impact force to the buffer member 23 through the rear impact prevention member 22, and the buffer member 23 buffers the impact force for the second time. Based on this, in some embodiments, the flexible buffer layer 24 may be made of foam or rubber.
In the process of installing the flexible buffer layer 24, the worker can install the rear bumper 22 on the vehicle body 1 first, and then install the flexible buffer layer 24 on the rear bumper 22. With such a structure, the assembly of the anti-collision piece and the flexible buffer layer 24 is mounted on the vehicle body 1 relative to a worker, and the operation of the worker is facilitated.
To enhance the cushioning effect of the flexible cushioning layer 24, referring to fig. 5, in some embodiments, the flexible cushioning layer 24 completely covers the rear surface of the rear bumper 22. Based on this, in some embodiments, the rear bumper 22 is a plate-like structure with the flexible cushioning layer 24 completely covering the rear surface of the rear bumper 22. According to the structure, the coverage area of the flexible buffer layer 24 is large, and the buffering effect is good.
To enhance the cushioning effect of the flexible cushioning layer 24, in some embodiments, the front bumper 21 and the rear bumper 22 are made of stainless steel. Stainless steel has higher rigidity and strength, and is more suitable for bearing the impact of vehicle collision in the rear-end collision process.
Further, the buffer member 23 may have various implementations, for example, the buffer member 23 may be a hydraulic buffer, a pneumatic buffer, or the like, or a compression spring 231, or the like. In some embodiments, referring to fig. 5, the buffer member 23 includes a spring 231 extending along the vehicle traveling direction, and one end of the spring 231 is connected to the front bumper 21 and the other end is connected to the rear bumper 22. During a vehicle impact against the rear fender 22, the rear fender 22 approaches the front fender 21, and the spring 231 is compressed to cushion the impact applied to the rear fender 22. It should be noted that the connection between the spring 231 and the front bumper 21 and the connection between the spring 231 and the rear bumper 22 may be direct connection, such as welding, connection or abutment through a fastener, or indirect connection through other components, for example, in some embodiments, a telescopic rod is disposed between the front bumper 21 and the rear bumper 22, and two ends of the spring 231 are respectively connected with two ends of the telescopic rod. With such a structure, the spring 231 and the telescopic rod form a whole, and are conveniently installed between the front bumper 21 and the rear bumper 22 as a buffer room.
In order to enhance the buffering effect of the buffering member 23, in some embodiments, referring to fig. 5, the buffering member 23 further includes a damping rod 232 disposed on the spring 231 and sleeved outside the damping rod 232, one end of the damping rod 232 is connected to the front bumper 21, and the other end is connected to the rear bumper 22. Structural style like this, the rebound phenomenon after spring 231 compresses can be alleviated effectively in damping rod 232's setting, is favorable to avoiding knocking into the back the in-process, and the vehicle that is located the rear receives secondary damage.
In order to enhance the buffering effect of the buffering member 23, in some embodiments, referring to fig. 5, the buffering member 23 further includes a buffering bush 233, the buffering bush 233 is disposed on the rear surface of the front impact prevention member 21, and the ends of the spring 231 and the damping rod 232 abut against the buffering bush 233. On this basis, in some embodiments, the rear surface of the front fender 21 is provided with a bushing mounting hole 214 corresponding to the cushion bushing 233, and the cushion bushing 233 is disposed in the bushing mounting hole 214. Specifically, in the process of mounting the cushion 23, the front bumper 21 and the rear bumper 22 are mounted on the vehicle body 1, the cushion bushing 233 is mounted in the corresponding bushing mounting hole 214, and finally, one end of the assembly of the damping rod 232 and the spring 231 abuts against the cushion bushing 233 and the other end is connected to the rear bumper 22. On this basis, in some embodiments, the front bumper 21 has a plate-shaped structure, and the bushing mounting holes 214 are through holes penetrating through opposite sides of the front bumper 21. Of course, in some embodiments, the bushing mounting holes 214 may also be blind.
Preferably, in some embodiments, referring to fig. 5, a set of cushion members 23 is formed by a spring 231, a damping member and a cushion bushing 233, and a plurality of sets of cushion members 23 are disposed between the front impact member 21 and the rear impact member 22. With such a structure, the arrangement of the multiple groups of buffer members 23 can improve the buffering effect. Preferably, in some embodiments, the plurality of sets of buffers 23 are arranged in an array in a plane perpendicular to the direction of vehicle travel. On the basis, in some embodiments, the front bumper 21 and the rear bumper 22 are both in a rectangular plate-like structure, the front bumper 21 and the rear bumper 22 are both arranged in a direction perpendicular to a vehicle traveling direction, the number of the cushion members 23 is four, one end of each of the four groups of cushion members 23 is connected to four corners of the front bumper 21, and the other end of each of the four groups of cushion members 23 is connected to four corners of the rear bumper 22.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (19)
1. A vehicle rear-end collision buffer structure, characterized by comprising:
the energy absorption module is arranged on a vehicle body of a vehicle, can move relative to the vehicle body of the vehicle in the vehicle running direction, and comprises a front anti-collision piece and a rear anti-collision piece which are opposite, wherein the front anti-collision piece is positioned in front of the rear anti-collision piece along the vehicle running direction, and the front anti-collision piece is connected with the rear anti-collision piece through a buffer piece;
the reset mechanism is fixedly connected to a vehicle body of the vehicle, and an acting end of the reset mechanism is connected with the energy absorption module and is used for applying force towards the rear of the vehicle to the energy absorption module.
2. The vehicle rear-end collision buffer structure according to claim 1, wherein the return mechanism comprises a pressure cylinder and an action rod, the pressure cylinder is used for being fixedly connected to a vehicle body of a vehicle along a vehicle running direction, one end of the action rod is hermetically slid in the pressure cylinder, the other end of the action rod is connected with the energy absorption module, a pressure medium is communicated in the pressure cylinder, and the action rod can move towards the rear of the vehicle along the pressure cylinder by increasing the pressure medium in the pressure cylinder so as to push the energy absorption module to move towards the rear of the vehicle.
3. The vehicle rear-end collision buffer structure according to claim 2, characterized in that the pressure cylinder interior is for communication with a fuel tank or a water tank of a vehicle.
4. The vehicle rear-end collision buffer structure according to claim 2, characterized in that the action lever is attached to a front surface of the front bumper.
5. The vehicle rear-end collision buffer structure according to claim 4, characterized in that the action lever is hinged to a front surface of the front bumper.
6. The vehicle rear-end collision buffer structure according to claim 2, characterized in that an installation seat is formed at one end of the pressure cylinder far away from the energy absorption module, an installation hole is formed in the installation seat, and a fastening piece is arranged in the installation hole in a penetrating manner and used for fixedly connecting the installation seat with the vehicle body.
7. The vehicle rear-end collision buffer structure according to claim 1, characterized in that a first slider for sliding connection with a vehicle body in a vehicle traveling direction is formed on the front bumper, and a second slider for sliding connection with a vehicle body in a vehicle traveling direction is formed on the rear bumper.
8. The vehicle rear-end collision buffer structure according to claim 1, characterized in that a flexible buffer layer is provided on a rear surface of the rear bumper.
9. The vehicle rear-end collision buffer structure according to claim 8, characterized in that the flexible buffer layer completely covers the rear surface of the rear bumper.
10. The vehicle rear-end collision buffer structure according to claim 9, wherein the flexible buffer layer is made of foam or rubber.
11. The vehicle rear-end collision buffer structure according to any one of claims 1 to 10, characterized in that the buffer member includes a spring extending in a vehicle traveling direction, one end of the spring being connected to the front collision prevention member and the other end being connected to the rear collision prevention member.
12. The vehicle rear-end collision buffer structure according to claim 11, wherein the buffer member further comprises a damping rod disposed outside the damping rod in the spring housing, one end of the damping rod is connected to the front anti-collision member, and the other end of the damping rod is connected to the rear anti-collision member.
13. The vehicle rear-end collision buffer structure according to claim 12, wherein the buffer further includes a buffer bush provided on a rear surface of the front bumper, and ends of the spring and the damper rod abut against the buffer bush.
14. The vehicle rear-end collision buffer structure according to claim 13, wherein a rear surface of the front bumper is provided with a bush mounting hole corresponding to the buffer bush, the buffer bush being disposed in the bush mounting hole.
15. The vehicle rear-end collision buffer structure according to claim 13, characterized in that one of said springs, one of said damping members and one of said cushion bushes constitute a set of cushion members, and a plurality of sets of said cushion members are provided between said front bumper and said rear bumper.
16. A vehicle, characterized by comprising:
a vehicle body;
the vehicle rear-end collision buffer structure according to any one of claims 1 to 15, wherein the energy absorption module of the vehicle rear-end collision buffer structure is disposed at a position near the rear of the vehicle body, the energy absorption module is movable relative to the vehicle body in a vehicle traveling direction, and the return mechanism of the vehicle rear-end collision buffer structure is fixedly connected to the vehicle body.
17. The vehicle of claim 16, wherein the energy absorption module top is slidably coupled to the bottom of the body.
18. The vehicle of claim 17, wherein the energy absorption module is slidably coupled to a rear side rail of the vehicle body.
19. The vehicle of claim 18, wherein a T-shaped runner is formed on the rear side member, and a T-shaped slider is correspondingly disposed on a side of the energy-absorbing module facing the rear side member, and the energy-absorbing module is slidably connected to the rear side member by sliding the T-shaped slider in the T-shaped runner.
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| CN202111522478.7A CN114261358B (en) | 2021-12-13 | 2021-12-13 | Vehicle rear-end collision buffer structure and vehicle |
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| CN202111522478.7A CN114261358B (en) | 2021-12-13 | 2021-12-13 | Vehicle rear-end collision buffer structure and vehicle |
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| CN114261358A true CN114261358A (en) | 2022-04-01 |
| CN114261358B CN114261358B (en) | 2023-10-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114941294A (en) * | 2022-06-28 | 2022-08-26 | 山东高速交建集团济南养护科技有限公司 | High-speed maintenance construction area safety protection system and device |
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| CN114261358B (en) | 2023-10-24 |
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