CN112519890B

CN112519890B - Passenger car threshold roof beam and subassembly

Info

Publication number: CN112519890B
Application number: CN202011583680.6A
Authority: CN
Inventors: 姜潮; 韩旭; 雷飞; 栗睿
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-09-17
Anticipated expiration: 2040-12-28
Also published as: CN112519890A

Abstract

The invention relates to a passenger car sill beam and an assembly, and aims at the passenger car sill beam, the passenger car sill beam comprises a shell (1), a cavity (16) and an energy absorption material (2), wherein the shell (1) is provided with an arc-shaped convex plate (11); a vertical plane plate (12); an upper side plate (13) and a lower side plate (14), wherein the upper side plate (13) and the lower side plate (14) are provided with structural grooves (15). For a passenger car rocker beam assembly, comprising: the sill beam described above; a side outer plate; a side wall inner plate; a floor; a second cavity. The invention is beneficial to fully utilizing the energy absorption effect of the energy absorption material.

Description

Passenger car threshold roof beam and subassembly

Technical Field

The invention relates to a passenger car doorsill beam which comprises a shell, wherein a cavity is formed in the shell, and energy-absorbing materials are filled in the cavity.

The invention also relates to a passenger car threshold beam assembly.

Background

In a passenger vehicle body structure, a threshold beam plays a role in absorbing collision energy and guaranteeing the safety of personnel in a vehicle in the process of side collision of the passenger vehicle, and simultaneously influences the structural strength and rigidity characteristics of the whole vehicle. The general doorsill structure consists of an inner doorsill plate, an outer doorsill plate and an internal reinforcing part, the parts are overlapped together to form a cavity, and when a passenger vehicle is subjected to side collision, the side collision invasion can be effectively resisted. In order to reduce the intrusion amount during a side collision of a passenger car to ensure the safety of passengers in the car, a high-strength steel material with a larger thickness is generally adopted.

In the current passenger vehicle body, a threshold inner plate and a threshold outer plate are generally processed into a U-shaped piece through cold stamping, hot stamping or rolling and the like, and then the threshold inner plate, the threshold outer plate and a reinforcing piece thereof are welded together through spot welding, arc welding and the like to form a threshold beam.

Chinese patent publication No. CN208585331U, publication No. 20190308, discloses a rocker beam for a vehicle and a vehicle having the same. The rocker beam is adapted to be connected to a side wall structure of the vehicle and is also located under the floor of the vehicle and fixed to the floor, the rocker beam comprising: an outer threshold beam; interior threshold roof beam, interior threshold roof beam set up on the medial surface of outer threshold roof beam, and the diapire of interior threshold roof beam includes: low wall section and high wall section, low wall section are located the outside near outer threshold roof beam, and high wall section is located the inboard of keeping away from outer threshold roof beam, and low wall section is less than high wall section and is provided with the connection profile section between low wall section and the high wall section to make the below of low wall section form the battery package connection structure installation space that is sheltered from by the connection profile section, low wall section is used for fixed with battery package connection structure. When the energy-absorbing material is collided, the energy-absorbing material is difficult to crush along a straight line, and the energy-absorbing function of the energy-absorbing material cannot be fully exerted.

Chinese patent publication No. CN111232059A, publication No. 20200605, discloses a threshold beam assembly, comprising: the side wall outer plate, the side wall threshold beam, the front floor threshold beam, the threshold lower longitudinal beam outer plate and the threshold lower longitudinal beam inner plate. The side wall outer plate and the side wall threshold beam are fixed to limit a first buffer cavity between the side wall outer plate and the side wall threshold beam; the front floor threshold beam and the side wall threshold beam are fixed to limit a second buffer cavity between the front floor threshold beam and the side wall threshold beam, and the second buffer cavity is arranged on the inner side of the first buffer cavity; the outer plate of the threshold lower longitudinal beam and the inner plate of the threshold lower longitudinal beam are fixed to limit a third buffer cavity between the outer plate of the threshold lower longitudinal beam and the inner plate of the threshold lower longitudinal beam, and the third buffer cavity is arranged on the inner side of the first buffer cavity and is located on the rear side of the second buffer cavity. It is not favorable to strengthening the collided part and the force bearing part, and the middle part is not favorable to crushing along the straight line, and the energy absorbing effect of the energy absorbing material can not be fully exerted.

Chinese patent publication No. CN104943753A, published as 20150930, discloses a variable thickness automobile doorsill beam and a manufacturing method thereof, including an outer doorsill beam panel, an inner doorsill beam panel, and a connecting panel disposed between the inner and outer doorsill beam panels; the threshold beam outer plate sequentially comprises an outer plate front section, an outer plate front transition section, an outer plate middle section, an outer plate rear transition section and an outer plate rear section; the sill beam inner plate sequentially comprises an inner plate front section, an inner plate front transition section, an inner plate middle section, an inner plate rear transition section and an inner plate rear section; the front sections of the inner plate and the outer plate, the middle sections of the inner plate and the outer plate, and the rear sections of the inner plate and the outer plate are of equal-thickness structures; the front and rear transition sections of the inner plate and the outer plate of the threshold beam are of variable thickness structures, and the thickness of the threshold beam is gradually reduced from thicker areas on two sides of the threshold beam to the thickness of thinner areas. It is unfavorable for making the sill beam that can follow straight line conquassation and warp, is unfavorable for full play energy-absorbing material's energy-absorbing effect.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a passenger car threshold beam which can be crushed in a substantially straight line and fully extruded and deformed when being impacted, so that an energy-absorbing material in the passenger car threshold beam can be fully extruded, the energy-absorbing effect of the energy-absorbing material is improved, and the passenger car threshold beam cannot be bent and broken when being impacted, and the waste of the energy-absorbing material is caused.

Another technical problem to be solved by the present invention is to provide a passenger car sill beam assembly, which can reinforce the part subjected to collision and the force bearing part without interfering with the crushing and deformation of the middle part, so that the sill beam can be sufficiently extruded and deformed along a substantially straight line, and the filled energy absorbing material can sufficiently absorb the energy carried by collision.

The invention further aims to solve the technical problem of providing a manufacturing method of the passenger car threshold beam, which can manufacture the threshold beam, enhance the integrity of the threshold beam and facilitate the threshold beam to crush along a straight line approximately, so that the crushing path of the threshold beam is beneficial to the full utilization of energy-absorbing materials.

Aiming at the passenger car doorsill beam, the passenger car doorsill beam comprises a shell, wherein a cavity is formed in the shell, energy-absorbing materials are filled in the cavity, and the shell is provided with an arc-shaped convex plate; a vertical plane plate spaced from the arc-shaped convex plate; the arc flange is transversely convex, and the both ends of plane board transversely extend parallel upper side board and the both ends of lower side board to arc flange respectively, are equipped with at least one towards the inside structural groove of shell on upper side board and the lower side board, and structural groove is along threshold roof beam axial extension, leads to long setting on upper side board and lower side board. When the arc flange receives the striking, curb plate and lower curb plate are gone up to the upper and lower side extrusion of arc flange, and the structural groove of curb plate and lower curb plate can induced the deformation, and structural groove self produces foldingly, also can produce between structural groove and the structural groove and fold, when making the arc flange remove towards the plane board, makes curb plate or lower curb plate roughly be sharp conquassation, and not bend absolutely, when receiving the striking, is favorable to the doorsill roof beam to produce the deformation that roughly is the straight line direction.

As a further improvement of the sill beam of the passenger car of the present invention, the structural channel has a trapezoidal or arcuate cross-sectional shape. The folding effect of trapezoidal structure groove is better, and the effect that curved structure groove bore upper portion load is better.

As a further improvement of the passenger car doorsill beam of the present invention, the thickness of the arc-shaped convex plate and the thickness of the plane plate are larger than the thickness of the upper side plate and the lower side plate. The rigidity that can guarantee arc flange and planomural is greater than the rigidity of upper plate and lower side plate, makes upper plate and lower side plate attenuation, more is favorable to upper plate or lower side plate folding deformation, when pressurized, can roughly be sharp conquassation.

As a further improvement of the passenger car doorsill beam, the energy-absorbing material is internally provided with a transverse separation seam which penetrates through the energy-absorbing material along the axial direction of the doorsill beam, and the separated energy-absorbing material is glued on the inner wall of the shell. Considering the temperature deformation of the energy-absorbing material, the separating seam is arranged to prevent the aluminum alloy shell from being burst when the temperature is high, the separating seam can also induce the deformation of the threshold beam, when the threshold beam is subjected to a transverse force, the sunken transverse strength at the position of the separating groove is low, the transverse deformation is more likely to occur at the position, and the transverse deformation can be continuously caused at other positions due to inertia, so that the transverse crushing effect of the threshold beam is induced, the energy-absorbing material is partitioned from top to bottom by the separating seam, when the energy-absorbing material is impacted in the direction vertical to the plane plate, enough space is reserved in the separating seam for the energy-absorbing material to be fully compressed and deformed, and more energy carried by impact is absorbed.

As a further improvement of the passenger car doorsill beam, the inner wall of the shell is provided with a plurality of transverse partition plates, the partition plates extend from the plane plate to the arc-shaped convex plate to divide the cavity into a plurality of partition grooves, the partition plates are provided with structural grooves facing the partition grooves, and the structural grooves are also arranged on the partition plates in a full length mode. The division board that has the structure groove also can fold during the pressurized, has improved the stability of guaranteeing that the threshold roof beam is roughly the straight line conquassation and warp, prevents that the threshold roof beam from bending to break.

As a further improvement of the passenger car doorsill beam, the separating groove is close to one end of the arc-shaped convex plate, the reinforcing pipe fitting is arranged and extends along the axial direction of the doorsill beam, one surface close to the energy-absorbing material is tightly attached to the energy-absorbing material, and the reinforcing pipe fitting is tightly attached to the arc-shaped convex plate.

Strengthen the pipe fitting and can strengthen the arc flange, when making the arc flange receive the striking, can stably extrude the division board, the top board, the bottom plate and strengthen the pipe fitting, the structure groove that sets up on division board, the top board, the bottom plate can the induced deformation, make division board, the top board, the bottom plate receive extrusion deformation along the direction of perpendicular to plane board, the conquassation, strengthen the energy-absorbing material that the pipe fitting can fully extrude the partition inslot, make the energy-absorbing material maximize absorb the energy that the striking carried.

For a rocker beam assembly of the present invention, it comprises:

a sill beam as described above;

a side wall outer plate covering the arc-shaped convex plate of the threshold beam;

a side wall inner panel covering the upper half section of the flat panel of the threshold beam;

a floor covering at least a portion of a lower half of the flat panel of the threshold beam;

the floor is fixedly connected with the side wall inner plate, the side wall outer plate and the side wall inner plate are provided with connecting parts fixedly connected with each other above the upper side plate of the threshold beam, and the parts of the side wall outer plate and the side wall inner plate above the upper side plate are spaced from the upper side plate to form a second cavity.

The side wall outer plate, the side wall inner plate and the floor are combined to form an enclosing body part to enclose the shell, so that the shell is thickened equivalently, the vertical bearing capacity is improved, and the shell is convenient to mount. When the threshold roof beam receives the collision, the second cavity can reserve the space that supplies upper side board crushing deformation.

As a further improvement of the passenger car sill beam assembly, the side wall outer plate is provided with an arc surface section for covering the arc convex plate and an oblique upward extending section which is integrally formed at the upper end of the arc surface section, the oblique upward extending section extends above the upper side plate, and a first mounting section which extends vertically and upwardly is formed at the end part of the oblique upward extending section; the side wall inner plate is provided with a plane section covering the upper half section of the plane plate, the plane section extends upwards to the height of the top point of the obliquely upwards extending section, then a transverse section transversely extends out of the end part of the obliquely upwards extending section, a second mounting section which is consistent with the first mounting section in shape and size is vertically and upwards extended out of the end part of the transverse section close to the obliquely upwards extending section, the connecting part is formed by the first mounting section and the second mounting section, and a third mounting section is transversely extended out of the lower end of the plane section; the floor is provided with a second plane section covering the lower half section of the partial plane plate and a fourth installation section transversely extending from the upper end of the second plane section, and the third installation section and the fourth installation section are tightly attached and fixedly connected.

The plane section, the horizontal section, the oblique ascending extension section, the cambered surface section encloses into the second cavity with the threshold roof beam, receive the collision at the arc flange, during threshold roof beam extrusion deformation, the oblique ascending extension section, first erection segment, second erection segment and horizontal section can be outside crooked, and can not be to the second cavity intracavity bending, can not hinder the threshold roof beam and roughly follow sharp extrusion deformation or conquassation, the plane section, the third erection segment, second plane section and fourth erection segment can provide sufficient bearing force supporting plane board, be convenient for plane board and arc flange extrude its upper side board and lower side board between the two, do not seal on the lower side board of shell, be favorable to the extrusion deformation of lower side board, do benefit to the free folding or conquassation of lower side board.

Aiming at the manufacturing method of the passenger car doorsill beam, the manufacturing method specifically comprises the following steps:

s1: the shell is manufactured by adopting aluminum alloy extrusion forming, and is also provided with a transversely outward convex arc-shaped convex plate, a vertical plane plate spaced from the arc-shaped convex plate, a transverse lateral plate and a lower lateral plate which are positioned between the arc-shaped convex plate and the vertical plane plate and are parallel, and structural grooves which are arranged on the upper lateral plate and the lower lateral plate in a full length mode, wherein the structural grooves extend along the axial direction of the threshold beam;

s2: energy absorbing material is filled in the shell.

Aluminum alloy extrusion, the wholeness is good, the arc flange, vertical plane board, the node rigidity of going up curb plate and lower curb plate interconnect is big, high strength, when the collision, the arc flange, vertical plane board, go up curb plate and lower curb plate can wholly be out of shape, can not hit scattered, can guarantee the completion of shell, the structural groove that leads to long setting on last curb plate and lower curb plate can guarantee that go up curb plate or lower curb plate roughly follow the mode extrusion deformation of perpendicular to plane board, conquassation, the energy-absorbing material of being convenient for fully compresses.

As a further improvement of the manufacturing method of the passenger car threshold beam, before the energy-absorbing material is filled in the shell, a seam pressing plate is inserted into the shell, the seam pressing plate is arranged along the axial through length of the threshold beam, transversely extends from the middle of the plane plate to the middle of the arc-shaped convex plate and is temporarily fixedly connected, the energy-absorbing material is filled in the shell, and then the seam pressing plate is removed to form a separation seam for transversely separating the energy-absorbing material.

The seam pressing plate is used, energy-absorbing materials are filled in the seam pressing plate, the separating seams are made, the efficiency is high, the width of the separating seams can be controlled by the width of the seam pressing plate, and the design of the separating seams is more convenient.

As a further improvement of the manufacturing method of the passenger car sill beam, before the energy absorbing material is filled in the shell, a plurality of transverse partition plates are integrally extruded in the shell, the partition plates extend from the plane plate to the arc-shaped convex plate to divide the cavity into a plurality of partition grooves, structural grooves facing the partition grooves are formed in the partition plates, the structural grooves are also arranged on the partition plates in a full-length mode, reinforcing pipe fittings are inserted into one ends, close to the arc-shaped convex plate, of the partition grooves, and the outer diameter of each reinforcing pipe fitting is equal to the distance between the adjacent partition plates.

The division board that has the structure groove also can fold during the pressurized, has improved the stability of guaranteeing that the threshold roof beam is roughly the straight line conquassation and warp, prevents that the threshold roof beam from bending to break. The reinforced pipe fitting reinforces the arc-shaped convex plate, and the arc-shaped convex plate drives the reinforced pipe fitting to fully extrude the energy-absorbing material in the separation groove, so that the energy-absorbing material can maximally absorb the energy carried by impact.

The energy-absorbing material can be crushed in a substantially straight line and fully extruded and deformed when being impacted, so that the energy-absorbing material in the energy-absorbing material can be fully extruded, the energy-absorbing effect of the energy-absorbing material is improved, and the energy-absorbing material is not bent and broken when being impacted, thereby causing waste of the energy-absorbing material.

Drawings

FIG. 1 is a cross-sectional view of a passenger car rocker beam infill structure.

FIG. 2 is a schematic view of a connecting structure of a passenger car sill beam filling structure, a side wall outer plate, a side wall inner plate and a floor.

FIG. 3 is a cross-sectional view of a passenger car sill beam filling structure and a side wall outer panel, side wall inner panel and floor connection structure.

Fig. 4 is another passenger car rocker beam infill structure.

Reference numerals: 1. an aluminum alloy housing; 11. an arc-shaped convex plate; 12. a flat plate; 13. an upper side plate; 14. a lower side plate; 15. a structural groove; 16. a cavity; 2. an energy absorbing material; 3. separating the seams; 4. a side outer plate; 41. a cambered surface section; 42. an obliquely upwardly extending section; 43. a first mounting section; 5. a side wall inner plate; 51. a planar section; 52. a cross section; 53. a second mounting section; 54. a third mounting section; 6. a floor; 61. a second planar segment; 62. a fourth mounting section; 7. a partition plate; 8. a separation tank; 9. reinforcing the pipe fitting; 10. a second cavity.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Fig. 1 to 3 show a threshold beam having an aluminum alloy housing 1 formed by integral extrusion, wherein the aluminum alloy housing 1 is formed with an arc-shaped convex plate 11 on the right side and a flat plate 12 on the left side by extrusion, an upper side plate 13 and a lower side plate 14 of the aluminum alloy housing 1 are formed between the arc-shaped convex plate 11 and the flat plate 12, both ends of the upper side plate 13 and the lower side plate 14 are respectively fixed to both ends of the flat plate 12 and the arc-shaped convex plate 11, structural grooves 15 facing the inside of the aluminum alloy housing 1 are formed in the upper side plate 13 and the lower side plate 14, two structural grooves 15 are formed in the upper side plate 13, the structural grooves 15 are distributed on the upper side plate 13 at intervals, two structural grooves 15 are formed in the lower side plate 14 and are parallel to each other in the axial direction of the aluminum alloy housing 1, and when the arc-shaped convex plate 11 is impacted, the structural grooves 15 can induce deformation, when the arc-shaped convex plate 11 is moved toward the flat plate 12, the upper side plate 13 or the lower side plate 14 can be crushed linearly, but not be bent, and deformation in a substantially linear direction is facilitated when the impact is applied.

The aluminum extrusion molding can make the thickness of the arc-shaped convex plate 11 and the flat plate 12 obviously thicker than that of the upper side plate 13 and the lower side plate 14, so as to ensure that the strength of two sides is higher than that of the middle part, so that when the rocker is impacted in the direction perpendicular to the flat plate 12, the arc-shaped convex plate 11 and the flat plate 12 can extrude the upper side plate 13 and the lower side plate 14 between the two, the upper side plate 13 and the lower side plate 14 can be extruded and deformed in the direction perpendicular to the flat plate 12 by matching with the structural grooves 15, and the whole doorsill beam is not bent when being impacted, so that the rocker is broken.

The aluminum alloy outer shell 1 is provided with a cavity 16, the cavity 16 is filled with an energy absorbing material 2, the energy absorbing material 2 is foamed aluminum and is glued in the aluminum alloy outer shell 1, the cavity 16 is filled, when an upper side plate 13 or a lower side plate 14 is crushed in a linear direction approximately vertical to a plane plate 12, the energy absorbing material 2 in the cavity 16 can be fully compressed and can absorb more energy as much as possible, a separating seam 3 is arranged in the energy absorbing material 2 during filling, the separating seam 3 is vertical to the plane plate 12 and extends along the axial direction of the aluminum alloy outer shell 1 to completely separate the upper layer and the lower layer of the energy absorbing material 2, the separating seam 3 is arranged considering the temperature deformation of the energy absorbing material 2 and can prevent the aluminum alloy outer shell 1 from being cracked when the temperature is high, the energy absorbing seam can be 1 and can separate the energy absorbing material into two parts, also can be 2, the energy absorbing material 2 can be separated into the upper part, the middle part and the lower part 3, and the separating seam 3 can also induce the deformation of the doorsill beam, when the threshold beam is subjected to transverse force, the concave transverse strength of the separation groove is low, transverse deformation is more likely to occur at the position, transverse deformation can continue to occur at other positions due to inertia, so that the effect of inducing transverse collapse of the threshold beam is achieved, the energy absorbing material 2 is partitioned from top to bottom by the separation seam 3, when the threshold beam is impacted in the direction perpendicular to the plane plate 12, enough space is reserved in the separation seam 3 for the energy absorbing material to be fully compressed and deformed, and more energy carried by impact is absorbed. When the structural groove 15 is in contact with the energy absorbing material 2, the structural groove has a larger contact area, and the vertical bearing capacity of the threshold beam can be enhanced.

In fig. 3, a side wall outer plate 4 is covered on the surface of the arc-shaped convex plate 11 and welded and fixed, the side wall outer plate 4 has an arc-shaped section 41 covering the arc-shaped convex plate 11 and an obliquely upward extending section 42 integrally formed at the upper end of the arc-shaped section 41, and the obliquely upward extending section 42 extends above the upper side plate 13 and forms a first mounting section 43 extending vertically upward at the end thereof.

In fig. 3, the upper half of the panel 12 is substantially covered by the side wall inner panel 5, the side wall inner panel 5 has a plane section 51 covering the upper half of the panel 12, the plane section 51 extends upward to the height of the vertex of the obliquely upward extending section 42, a transverse section 52 extends transversely from the end of the obliquely upward extending section 42, a second mounting section 53 having the same shape and size as the first mounting section 43 extends vertically upward from the end of the transverse section 52 close to the obliquely upward extending section 42, and a third mounting section 54 extends transversely from the lower end of the plane section 51 to the left.

The first mounting section 43 and the second mounting section 53 are fixedly connected together, for example, welded or bolted, and the planar section 51, the transverse section 52, the obliquely upward extending section 42, the arc section 41 and the rocker beam enclose the second cavity 10, and the second cavity 10 reserves a space for crushing and deforming the upper side plate 13 when the rocker beam is collided.

In fig. 3, the lower half of the flat plate 12 partially covers the floor 6, and the floor 6 has a second flat section 61 covering the lower half of the flat plate 12, and a fourth mounting section 62 extending transversely to the left from the upper end of the second flat section 61 and longer than the third mounting section 54, and can be tightly attached to and fixed with the third mounting section 54.

The side wall outer plate 4, the side wall inner plate 5 and the floor 6 are combined to form an enclosing body part to enclose the aluminum alloy shell 1, namely the aluminum alloy shell 1 is thickened to increase the vertical bearing capacity, and the aluminum alloy shell 1 is convenient to mount.

The invention can ensure that the threshold beam can absorb more collision energy when the passenger vehicle has side collision, thereby protecting personnel in the cabin.

Example 2

Fig. 4 shows another filling structure for a passenger car sill beam, in example 1, a plurality of partition plates 7 with structural grooves 5 extend in the vertical direction of a plane plate 12, the partition plates 7 extend to an arc-shaped convex plate 11, the structural grooves 5 evenly distributed at intervals on each partition plate 7 extend in the axial direction of the sill beam, a plurality of partition plates 7 are arranged between the partition plates 7, an upper side plate 13 is arranged between the partition plates 7 and a lower side plate 14, a separation groove 8 is formed, the separation groove 8 is filled with energy-absorbing materials 2, and the partition plates 7 with the structural grooves 5 can be folded when being pressed, so that the stability of ensuring that the sill beam is approximately linearly crushed and deformed is improved, and the sill beam is prevented from being bent and broken.

The partition groove 8 is close to one end of the arc-shaped convex plate 11, the reinforcing pipe fitting 9 is arranged, the reinforcing pipe fitting 9 extends along the axial direction of the sill beam and is tightly attached to the energy-absorbing material 2, the reinforcing pipe fitting 9 is close to the arc-shaped convex plate 11, the arc-shaped convex plate 11 can be reinforced by the reinforcing pipe fitting 9, when the arc-shaped convex plate 11 is impacted, the partition plate 7, the upper side plate 13, the lower side plate 14 and the reinforcing pipe fitting 9 can be stably extruded, the partition plate 7, the upper side plate 13 and the lower side plate 14 can be induced to deform, the partition plate 7, the upper side plate 13 and the lower side plate 14 are extruded and deformed and crushed along the direction perpendicular to the plane plate 12, the energy-absorbing material 2 in the partition groove 8 can be fully extruded by the reinforcing pipe fitting 9, and the energy-absorbing material 2 can absorb the energy carried by the impact.

Example 3

The invention also adopts a method for manufacturing the threshold beam, which comprises the following steps:

s1: the shell 1 with the cavity 16 is manufactured by adopting aluminum alloy extrusion forming, the shell 1 is also provided with a transversely convex arc-shaped convex plate 11, a vertical plane plate 12 spaced from the arc-shaped convex plate 11, a transverse lateral plate 13 and a lower lateral plate 14 which are positioned between the arc-shaped convex plate 11 and the vertical plane plate 12 and are parallel, and a structural groove 15 which is arranged on the upper lateral plate 13 and the lower lateral plate 14 in a full length way, wherein the structural groove 15 extends along the axial direction of the threshold beam;

s2: the energy absorbing material 2 is filled in the outer shell 1.

Aluminum alloy extrusion, the wholeness is good, arc flange 11, vertical plane board 12, the node rigidity of going up side panel 13 and lower plate 14 interconnect is big, high strength, when colliding, arc flange 11, vertical plane board 12, go up side panel 13 and lower plate 14 can wholly warp, can not broken up, can guarantee the completion of shell 1, go up the structural groove 15 of long setting on last side panel 13 and lower plate 14 and can guarantee that last side panel 13 or lower plate 14 roughly follow the mode extrusion deformation of perpendicular to plane board 12, the conquassation, be convenient for energy-absorbing material 2 fully compresses.

The method for manufacturing the separating seam 3 in the energy-absorbing material 2 comprises the steps of inserting a seam pressing plate into the shell 1 before the energy-absorbing material 2 is filled in the shell 1, arranging the seam pressing plate along the axial through length of the threshold beam, transversely extending from the middle of a plane plate 12 to the middle of an arc-shaped convex plate 11, temporarily and fixedly connecting the seam pressing plate, filling the energy-absorbing material 2 into the shell 1, and then removing the seam pressing plate to form the separating seam 3 for transversely separating the energy-absorbing material 2.

The seam pressing plate is used for refilling the energy absorbing material 2 to form the separating seams 3, the efficiency is high, the width of the separating seams 3 can be controlled by the width of the seam pressing plate, and the design of the separating seams 3 is more convenient.

In this embodiment, before the energy absorbing material 2 is filled in the outer shell 1, a plurality of transverse partition plates 7 are integrally extruded in the outer shell 1, the partition plates 7 extend from the flat plate 12 to the arc-shaped convex plate 11 to divide the cavity 16 into a plurality of partition grooves 8, the partition plates 7 are provided with structural grooves 15 facing the partition grooves 8, the structural grooves 15 are also arranged on the partition plates 7 in a full length manner, a reinforcing pipe 9 is inserted into one end of each partition groove 8 close to the arc-shaped convex plate 11, and the outer diameter of each reinforcing pipe 9 is equal to the distance between the adjacent partition plates 7.

The partition plate 7 with the structural grooves 5 can be folded when being pressed, so that the stability of the sill beam which is approximately in linear crushing deformation is improved, and the sill beam is prevented from being bent and broken. The reinforced pipe fitting 9 reinforces the arc-shaped convex plate 11, and the arc-shaped convex plate 11 drives the reinforced pipe fitting 9 to fully extrude the energy-absorbing material 2 in the separation groove, so that the energy-absorbing material 2 can maximally absorb energy carried by impact.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications can be made without departing from the spirit of the invention, and all the properties or uses are considered to be within the scope of the invention.

Claims

1. The utility model provides a passenger car doorsill beam, includes shell (1), have cavity (16) in shell (1), fill energy-absorbing material (2) in cavity (16), its characterized in that: the shell (1) is provided with an arc-shaped convex plate (11); a vertical plane plate (12) spaced from the arc-shaped convex plate (11); the structure is characterized in that the arc-shaped convex plate (11) protrudes outwards transversely, two ends of the plane plate (12) extend out of an upper side plate (13) and a lower side plate (14) which are parallel to each other to two ends of the arc-shaped convex plate (11) transversely respectively, a cavity (16) is formed by the arc-shaped convex plate (11), a vertical plane plate (12), the upper side plate (13) and the lower side plate (14) in a surrounding mode, at least one structure groove (15) facing the interior of the shell (1) is formed in the upper side plate (13) and the lower side plate (14), the structure groove (15) extends axially along the doorsill, and the length of the structure groove is arranged on the upper side plate (13) and the lower side plate (14);

the cross section of the structural groove (15) is trapezoidal or arc;

the thickness of the arc convex plate (11) and the thickness of the plane plate (12) are larger than the thickness of the upper side plate (13) and the lower side plate (14);

a transverse separation seam (3) is arranged in the energy-absorbing material (2), the energy-absorbing material (2) penetrates through the axial length of the threshold beam, and the separated energy-absorbing material (2) is glued on the inner wall of the shell (1);

be equipped with a plurality of horizontal division boards (7) on shell (1) inner wall, division board (7) extend to arc flange (11) from plane board (12), will cavity (16) are separated into a plurality of separating groove (8), be equipped with the orientation on division board (7) structure groove (15) of separating groove (8), structure groove (15) also lead to long the setting on division board (7).

2. A passenger car rocker according to claim 1, wherein said partition groove (8) is provided near one end of said curved flange (11) with a reinforcement pipe (9), said reinforcement pipe (9) extending axially along the rocker and abutting the energy absorbing material (2) near the side of the energy absorbing material (2), said reinforcement pipe (9) abutting the curved flange (11).

3. A passenger car rocker beam assembly comprising:

a rocker beam as claimed in claim 1 or 2;

a side body outer panel (4) covering the arc-shaped convex panel (11) of the threshold beam;

a side body inner panel (5) covering an upper half section of a flat panel (12) of the rocker beam;

a floor panel (6) covering at least a partial lower half of the sill beam flat panel (12);

the side wall structure is characterized in that the floor (6) is fixedly connected with the side wall inner plate (5), the side wall outer plate (4) is fixedly connected with the side wall inner plate (5) above an upper side plate (13) of the threshold beam, and the side wall outer plate (4) and the side wall inner plate (5) are located above the upper side plate (13) and are spaced from the upper side plate (13) to form a second cavity (10).

4. A passenger car rocker assembly according to claim 3, wherein said quarter outer panel (4) has a curved section (41) covering said curved flange (11), and a diagonally upward extending section (42) integrally formed at an upper end of the curved section (41), said diagonally upward extending section (42) extending above the upper side panel (13) and forming a first mounting section (43) extending vertically upward at an end thereof; the side wall inner plate (5) is provided with a plane section (51) covering the upper half section of the plane plate (12), the plane section (51) extends upwards to the height of the top point of the obliquely upwards extending section (42), then a transverse section (52) extends transversely from the end part of the obliquely upwards extending section (42), a second mounting section (53) with the same shape and size as the first mounting section (43) extends vertically upwards from the end part of the transverse section (52) close to the obliquely upwards extending section (42), the connecting part is formed by the first mounting section (43) and the second mounting section (53), and a third mounting section (54) extends transversely from the lower end of the plane section (51); the floor (6) is provided with a second plane section (61) covering the lower half section of the partial plane plate (12) and a fourth installation section (62) extending out of the upper end of the second plane section (61) in the transverse direction, and the third installation section (54) and the fourth installation section (62) are fixedly connected in a clinging mode.