CN215621842U

CN215621842U - Vehicle body front longitudinal beam collision energy absorption structure

Info

Publication number: CN215621842U
Application number: CN202121680972.1U
Authority: CN
Inventors: 刘静波; 高蕊
Original assignee: Hebei Zhongyi Yongxing Industry And Trade Co ltd
Current assignee: Hebei Zhongyi Yongxing Industry And Trade Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-01-25
Anticipated expiration: 2031-07-22

Abstract

The utility model relates to the technical field of automobiles and discloses an automobile body front longitudinal beam collision energy absorption structure, which comprises a baffle plate, wherein the middle part of the baffle plate is penetrated and transversely provided with a through hole, an air guide pipe is transversely arranged inside the through hole, the other end of the air guide pipe is connected with an air cylinder, the surface of an inner cavity of the air guide pipe is penetrated and connected with the surface of the inner cavity of the air cylinder, the right end of the baffle plate is provided with an air cylinder seat, and the peripheral surface of the left half part of the air cylinder seat is provided with a crumpling groove. This longeron collision energy-absorbing structure before automobile body is through installing the buffer air cushion at crashproof crossbeam to and the buffer air cylinder of the adsorbable ability of installation before the longeron, when making the car locomotive bump, buffer air cushion and cylinder absorb partial energy earlier, and the front longitudinal beam is the point of collapsing from the groove position of collapsing, takes place conquassation and bending, absorbs most energy, and the time that the locomotive energy absorption warp when having prolonged the collision gives more reaction time of driver, reduces accident hazard degree.

Description

Vehicle body front longitudinal beam collision energy absorption structure

Technical Field

The utility model relates to the technical field of automobiles, in particular to a front longitudinal beam collision energy absorption structure of an automobile body.

Background

The front longitudinal beam is equivalent to a framework of a vehicle and is formed by combining two longitudinal beams positioned on two sides, the longitudinal beams are formed by stamping a multi-purpose low-alloy steel plate, the section of each longitudinal beam is in a groove shape or an I shape, the front part of each longitudinal beam of the vehicle belongs to an energy absorption area, and the front part of each longitudinal beam of the vehicle can be collapsed once collision occurs.

The energy absorption area and the anti-collision beam are arranged in front of the front longitudinal beam, the front longitudinal beam deforms in a crushing mode and bends and absorbs about 60% of energy when an automobile collides, the process generally has no buffer device, when a car knocks into the rear, the front longitudinal beam deforms in a crushing mode and bends too fast, a driver at the rear is not timely in response, and more serious life safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a collision energy absorption structure of a front longitudinal beam of a vehicle body, which has the advantages of high-efficiency energy absorption, slow collapse and the like, and solves the problems that the common front longitudinal beam of the vehicle body is too fast to crush and bend due to no buffer device, so that serious accidents are caused, and the like, so that the working requirement of stable collapse of the front longitudinal beam cannot be met.

(II) technical scheme

In order to realize the purposes of energy absorption and slow collapse, the utility model provides the following technical scheme: a front longitudinal beam collision energy absorption structure of a vehicle body comprises an anti-collision cross beam frame, wherein the cross section of the anti-collision cross beam frame is of a concave structure, air cushion windows are formed in the upper surface, the lower surface and the side surfaces of the anti-collision cross beam frame in a penetrating mode, an air cushion is installed in the inner cavity of the anti-collision cross beam frame, the shape and the size of the air cushion are matched with those of the inner cavity of the anti-collision cross beam frame, and an energy absorption device is fixedly installed on the upper surface of the anti-collision cross beam frame;

the energy absorption device comprises a baffle plate, the baffle plate is fixed on the right surface of the anti-collision crossbeam frame through a bolt, a through hole is transversely formed in the middle of the baffle plate in a penetrating manner, an air guide pipe is transversely arranged in the through hole, the surface of an inner cavity at one end of the air guide pipe is connected with the surface of an inner cavity of an air cushion in a penetrating manner, the other end of the air guide pipe is connected with an air cylinder, the surface of the inner cavity of the air guide pipe is connected with the surface of the inner cavity of the air cylinder in a penetrating manner, an air cylinder seat is arranged at the right end of the baffle plate, the surface of the inner cavity of the air cylinder seat is attached to the outer surface of the air cylinder, the inner surface of the right end of the air cylinder seat is fixedly attached to the right surface of the air cylinder through a bolt, a piston rod is arranged at the right end of the air cylinder, a hemispherical head is sleeved on the surface of the right end of the piston rod, a spring is sleeved on the outer surface of the piston rod, one end of the spring tightly abuts against the right surface of the air cylinder, and the other end of the spring tightly abuts against the left surface of the hemispherical head, the right surface of the hemispherical head is wrapped with a hemisphere, the left surface of the ball head seat is fixedly provided with a fastening ring at the outer ring position of the hemispherical head through bolts, the upper part and the lower part of the right end of the ball head seat are provided with bolt holes in a penetrating manner, the left end of the ball head seat is transversely provided with a guide sliding sleeve, the guide sliding sleeve is of a cylindrical barrel structure, and the inner surface of the other end of the guide sliding sleeve is attached to the peripheral surface of the cylinder seat.

Preferably, a portion of the surface of the cushion expands through the cushion window.

Preferably, the right surface of the baffle is provided with a buckling groove at the outer ring position of the cylinder seat, the cylinder seat and the guide sliding sleeve are transversely sleeved with a dust cover, and one end of the dust cover is clamped with the buckling groove.

Preferably, the guide sliding sleeve and the cylinder seat form a sliding structure.

Preferably, the outer peripheral surface of the left half part of the cylinder seat is provided with a crumple groove.

(III) advantageous effects

Compared with the prior art, the utility model provides a vehicle body front longitudinal beam collision energy absorption structure, which has the following beneficial effects:

this longeron collision energy-absorbing structure before automobile body is through installing the buffer air cushion at crashproof crossbeam to and the buffer air cylinder of the adsorbable ability of installation before the longeron, when making the car locomotive bump, buffer air cushion and cylinder absorb partial energy earlier, and the front longitudinal beam is the point of collapsing from the groove position of collapsing, takes place conquassation and bending, absorbs most energy, and the time that the locomotive energy absorption warp when having prolonged the collision gives more reaction time of driver, reduces accident hazard degree.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the anti-collision device.

In the figure: 1. an anti-collision beam frame; 2. an air cushion window; 3. an air cushion; 4. an energy absorbing device; 41. a baffle plate; 42. a through hole; 43. an air duct; 44. a cylinder; 45. a cylinder block; 46. a piston rod; 47. a hemispherical head; 48. a spring; 49. a ball cup seat; 410. a fastening ring; 411. bolt holes; 412. a guide sliding sleeve; 413. a fastening groove; 414. a dust cover; 415. a collapsing trough.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a technical scheme, and discloses a vehicle body front longitudinal beam collision energy absorption structure which comprises an anti-collision beam frame 1, an air cushion window 2, an air cushion 3, an energy absorption device 4, a baffle plate 41, a through hole 42, an air guide pipe 43, a cylinder 44, a cylinder seat 45, a piston rod 46, a hemispherical head 47, a spring 48, a ball seat 49, a fastening ring 410, a bolt hole 411, a guide sliding sleeve 412, a clamping groove 413, a dust cover 414 and a collapsing groove 415, wherein the cross section of the anti-collision beam frame 1 is of a concave structure, the air cushion window 2 is arranged on the upper surface, the lower surface and the side surface of the anti-collision beam frame 1 in a penetrating mode, the air cushion 3 is installed in an inner cavity of the anti-collision beam frame 1, part of the surface of the air cushion 3 expands to penetrate through the air cushion window 2, and when the anti-collision beam is impacted. The elastic air cushion 3 firstly absorbs partial energy to play a role of buffering, the shape and the size of the air cushion 3 are matched with the inner cavity of the anti-collision beam frame 1, and the energy absorption device 4 is fixedly arranged on the upper surface of the anti-collision beam frame 1;

as shown in fig. 2, the energy absorbing device 4 includes a baffle plate 41, the baffle plate 41 is fixed on the right surface of the anti-collision beam frame 1 by bolts, the baffle plate 41 serves to seal the anti-collision beam frame 1 and fix the air cushion 3, a through hole 42 is transversely formed in the middle of the baffle plate 41, an air duct 43 is transversely installed inside the through hole 42, the surface of the inner cavity at one end of the air duct 43 is connected with the surface of the inner cavity of the air cushion 3, the other end of the air duct 43 is connected with an air cylinder 44, the surface of the inner cavity of the air duct 43 is connected with the surface of the inner cavity at the air inlet of the air cylinder 44, the air duct 43 is communicated with the inner cavity of the air cushion 3 and the inner cavity of the air cylinder 44 for air circulation, when the air cushion 3 is extruded, the extrusion force is transmitted to the air cylinder 44 by air, a cylinder seat 45 is arranged at the right end of the baffle plate 41, the surface of the inner cavity of the cylinder seat 45 is attached to the right surface of the air cylinder 44 by bolts, a piston rod 46 is installed at the right end of the cylinder 44, when the cylinder 44 is subjected to forward and backward extrusion force, the piston rod 46 can move in the cylinder 44, a hemispherical head 47 is sleeved on the right end surface of the piston rod 46, a spring 48 is sleeved on the outer surface of the piston rod 46, one end of the spring 48 abuts against the right surface of the cylinder 44, the other end of the spring 48 abuts against the left surface of the hemispherical head 47, when the piston rod 46 is extruded and moved, the spring 48 deforms to absorb partial energy, a ball head seat 49 is wrapped on the right surface of the hemispherical head 47, a fastening ring 410 is fixed on the left surface of the ball head seat 49 at the outer ring position of the hemispherical head 47 through bolts, the fastening ring 410 fixes the hemispherical head 47 at the left end of the ball head seat 49, bolt holes 411 are formed in the upper and lower parts of the right end of the ball seat 49 and used for connecting and fixing the device at one end of a longitudinal beam, a guide sliding sleeve 412 is transversely arranged at the left end of the ball seat 49, and the guide sliding sleeve 412 is in a cylindrical structure, and the inner surface of the other end of the guide sliding sleeve 412 is attached to the outer peripheral surface of the cylinder seat 45, the guide sliding sleeve 412 and the cylinder seat 45 form a sliding structure, so that the piston rod 46 of the cylinder 44 can move left and right, the right surface of the baffle plate 41 is provided with a buckling groove 413 at the outer ring position of the cylinder seat 45, the cylinder seat 45 and the outer part of the guide sliding sleeve 412 are transversely sleeved with a dust cover 414, one end of the dust cover 414 is clamped with the buckling groove 413, the dust cover 414 prevents dust from entering the outer surface of the sliding structure in the inner part, the outer peripheral surface of the left half part of the cylinder seat 45 is provided with a collapsing groove 415, and when collision occurs, the whole front longitudinal beam can bend and press from the collapsing groove 415 due to poor mechanical performance of the collapsing groove 415.

The working principle of the device is as follows: when the head of an automobile collides, collision force firstly acts on the air cushion 3, the air cushion 3 compresses, air is transmitted into an inner cavity of the air cylinder 44 through the air guide pipe 43, the air pushes the piston rod 46 to move rightwards, the distance between the right end face of the air cylinder 44 and the left end face of the ball seat 49 is reduced, the spring 48 is compressed and deformed to absorb partial energy, the collision force is continuously increased, the compression resistance of the air in the air cylinder 44 and the rebound resistance of the spring 48 are reduced, the collision speed is reduced until the collapse groove 415 on the outer surface of the air cylinder seat 45 cannot bear axial pressure, and the air cylinder is bent and crushed from the position to absorb most of collision energy.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a car body front longitudinal beam collision energy-absorbing structure, includes crashproof crossbeam frame (1), its characterized in that: the cross section of the anti-collision beam frame (1) is of a concave structure, air cushion windows (2) are formed in the upper surface, the lower surface and the side surfaces of the anti-collision beam frame (1) in a penetrating mode, an air cushion (3) is installed in the inner cavity of the anti-collision beam frame (1), the shape and the size of the air cushion (3) are matched with those of the inner cavity of the anti-collision beam frame (1), and an energy absorption device (4) is fixedly installed on the upper surface of the anti-collision beam frame (1);

the energy absorption device (4) comprises a baffle plate (41), the baffle plate (41) is fixed on the right surface of the anti-collision beam frame (1) through bolts, a through hole (42) is transversely formed in the middle of the baffle plate (41) in a penetrating manner, an air guide pipe (43) is transversely arranged in the through hole (42), the surface of an inner cavity at one end of the air guide pipe (43) is in penetrating connection with the surface of an inner cavity of the air cushion (3), an air cylinder (44) is connected to the other end of the air guide pipe (43), the surface of the inner cavity of the air guide pipe (43) is in penetrating connection with the surface of the inner cavity of the air cylinder (44), an air cylinder seat (45) is arranged at the right end of the baffle plate (41), the surface of the inner cavity of the air cylinder seat (45) is attached to the outer surface of the air cylinder (44), the inner surface of the right end of the air cylinder seat (45) is fixedly attached to the right surface of the air cylinder (44) through bolts, and a piston rod (46) is installed at the right end of the air cylinder (44), the right end surface of the piston rod (46) is sleeved with a hemispherical head (47), the outer surface of the piston rod (46) is sleeved with a spring (48), one end of the spring (48) abuts against the right surface of the air cylinder (44), the other end of the spring (48) abuts against the left surface of the hemispherical head (47), the right surface of the hemispherical head (47) is wrapped with a ball head seat (49), the left surface of the ball head seat (49) is fixed with a fastening ring (410) at the outer ring position of the hemispherical head (47) through a bolt, the upper part and the lower part of the right end of the ball head seat (49) are provided with bolt holes (411) in a penetrating manner, the left end of the ball head seat (49) is transversely provided with a guide sliding sleeve (412), the guide sliding sleeve (412) is of a cylindrical barrel structure, and the inner surface of the other end of the guide sliding sleeve (412) is attached to the outer peripheral surface of the air cylinder seat (45).

2. The front side member collision energy absorption structure of a vehicle body according to claim 1, characterized in that: the outer surface of the air cushion (3) penetrates through the inner opening of the air cushion window (2) after being expanded.

3. The front side member collision energy absorption structure of a vehicle body according to claim 1, characterized in that: the right surface of the baffle (41) is provided with a buckling groove (413) at the outer ring position of the cylinder seat (45), the cylinder seat (45) and the guide sliding sleeve (412) are transversely sleeved with a dust cover (414), and one end of the dust cover (414) is buckled with the buckling groove (413).

4. The front side member collision energy absorption structure of a vehicle body according to claim 1, characterized in that: the guide sliding sleeve (412) and the cylinder seat (45) form a sliding structure.

5. The front side member collision energy absorption structure of a vehicle body according to claim 1, characterized in that: the outer peripheral surface of the left half part of the cylinder seat (45) is provided with a collapsing groove (415).