CN111619679A - Vehicle threshold structure and vehicle - Google Patents
Vehicle threshold structure and vehicle Download PDFInfo
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- CN111619679A CN111619679A CN202010479568.1A CN202010479568A CN111619679A CN 111619679 A CN111619679 A CN 111619679A CN 202010479568 A CN202010479568 A CN 202010479568A CN 111619679 A CN111619679 A CN 111619679A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
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Abstract
The application relates to the technical field of vehicles, in particular to a vehicle threshold structure and a vehicle. The vehicle rocker structure includes: the door sill comprises a door sill shell and an inner filling reinforcing structure; the inner filling reinforcing structure is arranged in the threshold shell and comprises foamed aluminum and an aluminum pipe which are matched with each other, the aluminum pipe extends along the length direction of the threshold shell, and the foamed aluminum is arranged between the aluminum pipe and the threshold shell. The vehicle threshold that this application embodiment provided, inside built-in filling additional strengthening has promoted self structure high strength greatly, and foamed aluminum and aluminum pipe matched with design are showing the structure weight who has reduced the vehicle threshold simultaneously. In addition, the foamed aluminum in the inner filling reinforced structure can absorb the impact force applied to the vehicle door sill in the vehicle collision, and the damage to the passengers can be prevented or reduced.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle threshold structure and a vehicle.
Background
The vehicle body framework of the vehicle is provided with threshold structures on two sides of the bottom of the passenger compartment, and a front cross beam and a rear cross beam are respectively arranged on the front side and the rear side of the bottom of the passenger compartment, namely, the threshold structures on the two sides, the front cross beam on the front side and the rear cross beam on the rear side jointly limit the area of the bottom of the passenger compartment. Accordingly, the floor installed to the vehicle body frame can be connected to the threshold structure, the front cross member, and the rear cross member.
Specifically, the floor panel may be covered and overlapped over the rocker structure, the front cross member, and the rear cross member, and fixed to the upper side of the rocker structure, the front cross member, and the rear cross member by means of bonding or the like. The floor can be arranged on the vehicle body framework in such a way, and the sealing performance of the bottom of the passenger compartment can be ensured. Since the floor is frequently stepped on at a position close to the rocker structure, the adhesion between the floor and the rocker structure may fail after the floor bears a load for a long time, and the occurrence of a situation such as deformation of the rocker structure may occur due to a pressure applied to the rocker structure exceeding a limited interval.
In the related art, in order to prevent the vehicle rocker structure from deforming when subjected to a large pressure, a reinforcing device is generally provided inside the vehicle rocker structure.
However, the reinforcing device provided in the vehicle rocker often causes the mass of the vehicle rocker structure to be greatly increased, and further, the mass of the whole vehicle is greatly increased. Therefore, it is important to provide a vehicle rocker structure having a higher structural strength with a smaller mass increase.
Disclosure of Invention
In view of the above, the present invention provides a vehicle rocker structure having a higher structural strength with a smaller increase in mass. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a vehicle rocker structure, including a rocker shell and an inner filling reinforcement structure;
the inner filling reinforcing structure is arranged in the doorsill shell and comprises foamed aluminum and an aluminum pipe which are matched with each other, the aluminum pipe extends along the length direction of the doorsill shell, and the foamed aluminum is arranged between the aluminum pipe and the doorsill shell.
Optionally, the threshold shell includes two opposite shells spliced with each other, and the cross section of the threshold shell includes a circle, a square, a rectangle or an ellipse.
Optionally, the threshold shell includes an upper-shaped shell and a lower-shaped shell, and the upper-shaped shell and the lower-shaped shell are spliced with each other through an opening.
Optionally, the cross-section of the aluminum tube comprises a circle, a square, a rectangle or an ellipse.
Optionally, the foamed aluminum forms a foamed aluminum support tube along the length direction of the doorsill shell, the outer wall of the foamed aluminum support tube is in close contact with the inner wall of the doorsill shell, the aluminum tube is arranged in the foamed aluminum support tube, and the outer wall of the aluminum tube is in close contact with the inner wall of the foamed aluminum support tube.
Optionally, a cavity with a square cross section is reserved in the center of the foamed aluminum support tube, the aluminum tube is a square aluminum tube, and the square aluminum tube is placed in the cavity.
Optionally, the foamed aluminum forms a foamed aluminum support strip extending along the length direction of the threshold housing, and the foamed aluminum support strip is supported between the aluminum tube and the threshold housing.
Optionally, the foamed aluminum support bar includes that four cross sections are the foamed aluminum support bar of L shape, the aluminum pipe is square aluminum pipe, four the foamed aluminum support bar is located respectively four internal angle departments of threshold shell, every angle of square aluminum pipe respectively with one the inboard both sides in L shape of foamed aluminum support bar in close contact with.
Optionally, a part of the foamed aluminum is filled inside the aluminum pipe.
In a second aspect, an embodiment of the present invention provides a vehicle, including: the vehicle rocker structure according to any one of the first aspect.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the vehicle doorsill provided by the embodiment of the invention, the inner filling reinforcing structure comprising the aluminum pipe and the foamed aluminum is arranged in the vehicle doorsill, and the foamed aluminum has small density and high bending rigidity, and meanwhile, the aluminum pipe has higher bending bearing force and is in a tubular design, so that the filling type vehicle doorsill comprising the foamed aluminum and the aluminum pipe has higher structural strength, and compared with the existing vehicle doorsill, the self structural weight is obviously reduced, and further the weight of the whole vehicle is reduced. In addition, the foamed aluminum arranged in the vehicle doorsill can effectively absorb the impact energy received by the vehicle doorsill in the vehicle collision, and the injury of the vehicle collision to passengers is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a vehicle rocker structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a filled vehicle door sill including an aluminum foam support tube and square aluminum tube in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a filler type vehicle sill including an aluminum foam brace and square aluminum tube in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a compression roller test performed by a vehicle doorsill structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a deformation structure of a foamed aluminum support tube after a compression roller test;
FIG. 6 is a schematic diagram of a deformation structure of a first square aluminum pipe after a compression roller test;
FIG. 7 is a schematic diagram of a deformed structure of four L-shaped foamed aluminum support bars after being subjected to a compression roller test;
FIG. 8 is a schematic view of a deformed structure of a second square aluminum pipe after being subjected to a compression roller test;
fig. 9 is a bending force line graph measured after three-point pressure bending tests were respectively performed on an unfilled vehicle rocker, a filled vehicle rocker including an aluminum foam support tube and a square aluminum tube, and a filled vehicle rocker including an L-shaped aluminum foam support strip and a square aluminum tube.
In the drawings, the components represented by the respective reference numerals are listed below:
1-a doorsill shell, 101-a lower-shaped shell, 102-an upper-shaped shell, 2-a press roll, 3-an inner filling reinforcing structure, 301-a foamed aluminum support tube, 302-a first square aluminum tube, 303-an L-shaped foamed aluminum support strip, 304-a second square aluminum tube, A-an average bending bearing force condition of a filling type vehicle doorsill comprising the foamed aluminum support tube and the square aluminum tube, B-a real-time bending bearing force condition of the filling type vehicle doorsill comprising the foamed aluminum support tube and the square aluminum tube, C-an average bending bearing force condition of the filling type vehicle doorsill comprising the L-shaped foamed aluminum support strip and the square aluminum tube, D-a real-time bending bearing force condition of the filling type vehicle doorsill comprising the L-shaped foamed aluminum support tube and the square aluminum tube, E-an optimized bending bearing force condition of a target, F-an average bending bearing force condition of a non-type vehicle doorsill, g-real time bending force bearing situation of a no-filler vehicle sill.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "inner", "upper", "both ends", "outer top", "side", "middle position", "inner bottom", etc. indicate orientations or positional relationships only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 is a schematic view of a vehicle rocker structure according to an embodiment of the present invention. As shown in fig. 1, the vehicle rocker structure includes a rocker shell 1 and an inner-filled reinforcement structure 3.
The inner filling reinforcing structure 3 is arranged in the threshold shell 1, the inner filling reinforcing structure 3 comprises foamed aluminum and an aluminum pipe which are matched with each other, the aluminum pipe extends along the length direction of the threshold shell 1, and the foamed aluminum is arranged between the aluminum pipe and the threshold shell 1.
It should be noted that the threshold shell 1 is a tubular structure, the length of the internal filling reinforcement structure 3 is similar to or equal to the length of the threshold shell 1, the foamed aluminum (not shown in the figure) in the internal filling reinforcement structure 3 is located between the aluminum pipe and the threshold shell 1, and the small hole on the threshold shell 1 is used for connecting the threshold with other components of the vehicle. In order to enable a person skilled in the art to understand intuitively, fig. 1 shows only a part of the rocker shell 1 and the exposed inner filling reinforcement 3 in a truncated manner, the inner filling reinforcement 3 being clearly visible in fig. 1 as being embedded in the rocker shell 1.
The vehicle door sill structure provided in the embodiment of the invention has an internal filling reinforcing structure including foamed aluminum and an aluminum pipe built in the interior. The foamed aluminum has strong impact absorption capacity and high bending rigidity, and the aluminum pipe can provide larger bending bearing force, so that the obtained vehicle doorsill has high structural strength, and meanwhile, the foamed aluminum has low density and the aluminum pipe is arranged in a tubular shape, so that the weight of the doorsill is reduced. Therefore, the inner filling reinforcing structure combining the foamed aluminum and the aluminum pipe can provide larger bending bearing force for the vehicle doorsill, and meanwhile, compared with a reinforcing device in the prior art, the structural weight of the vehicle doorsill is obviously reduced, and further the weight of the whole vehicle is reduced. In addition, the foamed aluminum can absorb the impact force applied to the vehicle door sill in the vehicle collision, and is helpful for preventing or reducing the injury of passengers.
Optionally, the threshold shell 1 includes two opposite casings that splice each other, and the length of two casings is unanimous, can guarantee to conveniently carry out follow-up assembly after setting up the interior filling additional strengthening in the threshold shell like this.
The cross-section of the sill shell 1 may comprise a circle, a square, a rectangle or an ellipse. That is to say that the cross-sectional main part of the sill shell 1 is circular, square, rectangular or oval, but other shapes are not excluded for a small part. For example, the cross-section of the rocker housing may comprise a square body portion and small extensions on both sides for connecting other components of the vehicle.
The sill shell 1 may also be a variable section pipe, i.e. the cross-sectional shape of the sill shell 1 may vary in the length direction. For example, the cross-sectional shape of the sill shell 1 may be round at its two ends and square in its middle. The threshold shell is a variable cross-section type pipe, can be effectively matched with the shape and size design of other parts of the vehicle, and provides greater flexibility for the overall design of the vehicle.
Optionally, the sill shell 1 includes an upper-shaped shell 102 and a lower-shaped shell 101, and the upper-shaped shell 102 and the lower-shaped shell 101 are spliced with their openings facing each other. The upper housing 102 and the lower housing 101 are equal in length. It should be noted that the rocker housing may further include portions extending from both sides of the rocker housing main body.
Optionally, the material of the threshold housing 1 includes steel, carbon fiber or aluminum alloy.
Optionally, the cross section of the aluminum pipe comprises a circular shape, a square shape, a rectangular shape or an oval shape, and an appropriate pipe shape can be selected according to actual requirements. For example, the aluminum pipe may be a hexagonal pipe, a flat circular pipe, a dropper pipe, or other special pipes.
Optionally, the aluminum pipe comprises a pure aluminum pipe or an aluminum alloy pipe, and if the aluminum pipe is an aluminum alloy pipe, the added alloy element comprises at least one element of copper, magnesium, zinc, silicon and the like. The aluminium tube may be a seamless aluminium tube or a common extruded tube.
Optionally, the aluminum pipe may also be a variable cross-section pipe. Illustratively, the cross-sectional shape of the aluminum tube is a circular tube at both ends thereof and transitions to a square tube at the middle. The cross-sectional shape of the aluminum pipe may be the same as or different from the cross-sectional shape of the rocker housing, and the cross-sectional shape of the foamed aluminum should be adapted to the cross-sectional shapes of the aluminum pipe and the rocker housing. In the embodiment of the invention, the sectional shape of the aluminum pipe can be selected according to actual requirements.
The foamed aluminum is generally prepared by adding an additive into pure aluminum or aluminum alloy and then performing a foaming process such as a powder metallurgy foaming method, a powder slurry forming method, a direct blowing foaming method, a hollow three-dimensional framework method or a vapor phase evaporation deposition method. The foamed aluminum has both metal and bubble characteristics, the density is far lower than that of metal aluminum, the bending rigidity is high, the foamed aluminum has high damping and shock absorption performance and impact energy absorption rate, the porosity is controllable, and the forming precision is high. For the threshold shell and the aluminum pipe with different shapes, foamed aluminum with the shape matched with that of the threshold shell and the aluminum pipe can be respectively manufactured, and the preparation process is simple.
In summary, the rocker housing and the aluminum pipe of the vehicle rocker provided in the embodiment of the invention may be prepared in different shapes in cross section, and the cross sectional shape of the aluminum pipe may be the same as or different from that of the rocker housing. The preparation process of the foamed aluminum is simple, and for the doorsill shell and the aluminum pipe with different shapes, the corresponding foamed aluminum can be prepared and supported between the inner wall of the doorsill shell and the outer wall of the aluminum pipe. The aluminum pipe can also provide larger bending bearing force due to the strong impact absorption capacity and high bending rigidity of the foamed aluminum, so that the filled vehicle doorsill comprising the foamed aluminum and the aluminum pipe has high structural strength, and meanwhile, the weight of the doorsill is reduced due to the fact that the foamed aluminum is low in density and the aluminum pipe is arranged in a pipe shape. In addition, the foamed aluminum can also absorb the impact force on the side surface of the vehicle doorsill in vehicle collision, and reduce the injury to passengers. Therefore, the vehicle door sill structure provided by the embodiment of the invention has high strength and low mass, and simultaneously has great flexibility in designing the overall shape of the vehicle door sill.
A vehicle rocker structure provided by an embodiment of the invention will be described in detail below with reference to fig. 2. The vehicle rocker structure includes a rocker shell 1 and an inner-filled reinforcement structure 3.
As shown in fig. 2, the rocker housing 1 includes an upper-shaped housing 102 and a lower-shaped housing 101, and the upper-shaped housing 102 and the lower-shaped housing 101 are joined to each other with their openings facing each other. The upper housing 102 and the lower housing 101 are equal in length. The inner filling reinforcement structure 3 is provided in the rocker case 1. The internally filled reinforcing structure 3 comprises an aluminium foam and an aluminium tube which are mutually matched, wherein the aluminium tube extends along the length direction of the threshold housing 1, and the aluminium foam is arranged between the aluminium tube and the threshold housing 1.
Alternatively, as shown in fig. 2, the foamed aluminum forms a foamed aluminum support pipe 301 extending in the length direction of the rocker housing 1, and the outer wall of the foamed aluminum support pipe 301 is in close contact with the inner wall of the rocker housing 1. The aluminum tube is built in the foamed aluminum support tube 301, and the outer wall of the aluminum tube is in close contact with the inner wall of the foamed aluminum support tube 301.
Alternatively, as shown in fig. 2, a cavity with a square cross section is reserved in the center of the foamed aluminum support tube 301, and the aluminum tube is a first square aluminum tube 302, and the first square aluminum tube 302 is placed in the cavity.
The first square aluminum pipe 302 may have an outer diameter of 50mm, a wall thickness of 1.5mm and a length of 420mm, for example. Compared with the vehicle door sill structure without the internal filling reinforcing structure, the filling type vehicle door sill structure comprising the foamed aluminum supporting tube and the square aluminum tube has the mass increased by 1.15 kg.
It should be noted that, if the doorsill shell is in other shapes, the cross section of the foamed aluminum support tube can be adjusted to be in other shapes, and only the center of the foamed aluminum support tube needs to be arranged to form a square cavity for the built-in square aluminum tube. In addition, the section of the central cavity of the foamed aluminum support tube can also be set to be in a shape of a circle or an ellipse, and the like, and correspondingly, the section shape of the aluminum tube needs to be prepared to be the same as the section shape of the cavity. For example, the cross section of the threshold shell is circular, the cross section of the aluminum pipe is elliptical, the cross section of the outer wall of the foamed aluminum supporting pipe needs to be made circular, the cross section of the inner wall needs to be made elliptical, the radius of the cross section of the outer wall is close to or equal to the radius of the cross section of the inner wall of the threshold shell, and the long axis and the short axis of the cross section of the inner wall are respectively close to or equal to the long axis and the short axis of the cross section of the outer wall of the; if the threshold shell is a variable cross-section type tube, for example, the cross section of the variable cross-section type tube is circular at both ends, the cross section of the variable cross-section type tube is square in the middle area, and the cross section of the aluminum tube is square, the cross section of the internal cavity of the foamed aluminum support tube is square, the side length of the cross section of the cavity is close to or equal to the side length of the cross section of the aluminum tube, and the cross section of the outer wall of the foamed aluminum support tube is the same as the cross section of the inner wall of the threshold shell, that is, the cross section of the outer.
In summary, the vehicle rocker structure provided by the embodiment of the invention has an internal filling structure including a foamed aluminum support tube and a square aluminum tube, wherein the outer wall of the foamed aluminum support tube is in close contact with the inner wall of the rocker shell, the aluminum tube is arranged in the foamed aluminum support tube, and the outer wall of the aluminum tube is in close contact with the inner wall of the foamed aluminum support tube. The foamed aluminum supporting tube can absorb pressure applied to the vehicle doorsill, the square aluminum tube can provide larger bending force, meanwhile, due to the fact that the density of foamed aluminum is small and the tubular design of the aluminum tube is achieved, the filling type vehicle doorsill comprising the foamed aluminum supporting tube and the square aluminum tube has higher structural strength, meanwhile, compared with the existing vehicle doorsill, the structural weight of the filling type vehicle doorsill is remarkably reduced, and further the weight of the whole vehicle is reduced. In addition, the foamed aluminum supporting tube can effectively absorb impact energy received by the side face of the vehicle doorsill in vehicle collision, and reduce the injury of the vehicle collision to passengers.
Fig. 3 is a cross-sectional view of another vehicle rocker provided by an embodiment of the invention. Referring to fig. 3, the vehicle rocker includes a rocker shell 1 and an inner-filled reinforcement structure 3.
As shown in fig. 3, the rocker housing 1 includes an upper-shaped housing 102 and a lower-shaped housing 101, and the upper-shaped housing 102 and the lower-shaped housing 101 are joined to each other with their openings facing each other. The inner filling reinforcement structure 3 is provided in the rocker case 1. The internally filled reinforcing structure 3 comprises an aluminium foam and an aluminium tube which are mutually matched, wherein the aluminium tube extends along the length direction of the threshold housing 1, and the aluminium foam is arranged between the aluminium tube and the threshold housing 1.
Alternatively, as shown in fig. 3, the foamed aluminium forms a foamed aluminium bracing strip extending in the length direction of the sill shell 1, which foamed aluminium bracing strip is supported between the aluminium tube and the sill shell 1.
Alternatively, as shown in fig. 3, the foamed aluminum support strip includes four foamed aluminum support strips 303 having an L-shaped cross section, and the four L-shaped foamed aluminum support strips 303 are respectively located at four inner corners of the rocker housing 1.
Alternatively, as shown in fig. 3, the aluminum tube is a second square aluminum tube 304, and each corner of the second square aluminum tube 304 is closely contacted with two sides of the inside of the L shape of one foamed aluminum support strip.
The second square aluminium tube 304 may for example have an external diameter of 50mm, a wall thickness of 1.5mm and a length of 420 mm. The mass of the filled type vehicle rocker structure including the L-shaped foamed aluminum stay tube and the square aluminum tube was increased by 0.772kg as compared with the vehicle rocker structure without the inner filling reinforcement structure, and was reduced by about 33% as compared with the filled type vehicle rocker structure including the foamed aluminum stay tube and the square aluminum tube, i.e., the mass of the vehicle rocker was further reduced.
It should be noted that, if the doorsill shell is in other shapes, the cross section of the foamed aluminum support bar can be adjusted to be in other shapes, and only the foamed aluminum support bar needs to be arranged to be in close contact with the inner corner of the doorsill shell, and meanwhile, the inner wall of the foamed aluminum support bar is in close contact with the outer wall of the square aluminum pipe. If the number of the inner angles of the threshold shell is not four, the number of the foamed aluminum support bars is correspondingly adjusted to be the number of the inner angles of the threshold shell, and the inner walls of the foamed aluminum support bars are still in close contact with the outer walls of the square aluminum tubes. In addition, when the sectional shape of the aluminum pipe is circular, rectangular or oval, the sectional shape of the foamed aluminum support bar should also be adaptively adjusted to allow the outer wall of the aluminum pipe to be in close contact with the inner wall thereof. For example, if the cross-sectional shapes of the sill housing and the aluminum pipe are both circular, the cross-sectional shape of the foamed aluminum support bars should be a sector, the outer diameter and the inner diameter of the sector are equal to or close to the inner diameter of the sill housing and the outer diameter of the aluminum pipe, respectively, and the number of the foamed aluminum support bars can be adjusted according to actual needs, for example, three or four.
In summary, in the vehicle rocker structure provided in the embodiment of the present invention, the inside of the vehicle rocker structure is internally provided with the internal filling structure including the foamed aluminum support strip and the square aluminum pipe, wherein the foamed aluminum support strip includes four L-shaped foamed aluminum support strips, the four L-shaped foamed aluminum support strips are respectively located at four inner corners of the rocker shell, and each corner of the square aluminum pipe is respectively in close contact with two sides of the inside of the L shape of one foamed aluminum support strip. The foamed aluminum support bars positioned at the four inner corners of the threshold shell can absorb the pressure on the vehicle threshold and provide larger bending rigidity, and the square aluminum tubes can also provide larger bending bearing force. In addition, the foamed aluminum support strips positioned at the four inner corners of the doorsill shell can absorb the impact force on the vehicle doorsill in the vehicle collision, and reduce the injury to passengers in the collision.
Optionally, the upper surface and the lower surface of the threshold shell 1 are connected with the side surfaces through arc transition portions, the inner angle of the cross section is an arc angle, and the inner filling reinforcing structure 3 is provided with an arc portion attached to the inner side of the arc transition portions.
The shell of the threshold structure provided by the embodiment of the invention has the arc inner angle, so that the outer line of the threshold structure is smoother, the foamed aluminum in the inner filling reinforcing structure is more easily in close contact with the threshold shell, the external impact energy is better absorbed, the deformation of the threshold shell structure such as recess is avoided, meanwhile, the foamed aluminum can absorb the impact energy of the threshold structure on the arc part in vehicle collision, the injury of passengers is favorably prevented or reduced, and the safety of the vehicle is improved.
Alternatively, a portion of the foamed aluminum may be filled in the interior of the aluminum pipe to further increase the bending force of the vehicle door sill, enhancing the safety of the vehicle door sill while adding less weight.
It should be noted that the inner filling reinforcement structure in the embodiment of the present invention includes foamed aluminum and an aluminum pipe, the aluminum pipe extends along the length direction of the sill shell, and the foamed aluminum is disposed between the aluminum pipe and the sill shell and may be a support pipe or a support bar extending along the length direction of the sill shell. The inner filling structure can provide a high bending resistance to the rocker while adding only a small mass to the non-filled type vehicle rocker.
An embodiment of the present invention provides a vehicle including the vehicle rocker structure described in any one of the above embodiments.
The inner filling reinforcing structure comprising the foamed aluminum and the aluminum pipe is arranged in the doorsill shell of the vehicle, the aluminum pipe extends along the length direction of the doorsill shell, and the foamed aluminum is arranged between the aluminum pipe and the doorsill shell. The foamed aluminum may be provided as foamed aluminum support tubes or foamed aluminum support strips. Because foamed aluminum can absorb impact energy in a large amount, has higher bending rigidity, and the aluminum pipe can provide great bending force, makes the vehicle threshold that obtains have high structural strength, simultaneously because foamed aluminum density is less and the aluminum pipe is the tubulose setting, makes vehicle threshold structure lighten the quality. Therefore, the vehicle provided by the embodiment of the invention has a threshold structure with high strength and low quality, and the foamed aluminum in the vehicle threshold can absorb the impact force on the threshold in the vehicle collision, so that the safety of the vehicle is improved.
Fig. 4 is a schematic structural diagram of a vehicle door sill structure according to an embodiment of the present invention, in which a pressing test is performed on an upper portion of the door sill by a pressing roller 2. It should be noted that, when the vehicle door sill in fig. 4 is subjected to the compression roller test, the compression roller 2 and two support members located at the lower portion of the vehicle door sill are used to perform the three-point pressure test, and the condition of the door sill housing 1 in fig. 4 is when it is connected to other components of the vehicle, which does not mean that the length of the upper case of the door sill housing must be longer than that of the lower case.
Fig. 5-8 are schematic diagrams of the deformed structures of the foamed aluminum support tube 301, the first square aluminum tube 302, the four L-shaped foamed aluminum support bars 303 and the second square aluminum tube 304 after the roller pressing test in fig. 4. Referring to fig. 5 to 8, after the pressing test of the pressing roller 2, the foamed aluminum support pipe 301, the first square aluminum pipe 302, the four L-shaped foamed aluminum support bars 303 and the second square aluminum pipe 304 were recessed downward at corresponding regions right below the pressing roller 2. The deformation degree of the foamed aluminum support tube 301 is slightly larger than that of the first square aluminum tube 302, and the deformation degree of the four L-shaped foamed aluminum support bars 303 is slightly larger than that of the second square aluminum tube 304.
Fig. 9 is a bending force line graph measured after three-point pressure bending tests were respectively performed on a non-filled vehicle sill, a filled vehicle sill including an aluminum foam support tube and a square aluminum tube, and a filled vehicle sill including an L-shaped aluminum foam support strip and a square aluminum tube.
Referring to fig. 9, the average bending load (a) of the filled vehicle sill structure including the foamed aluminum support tube and the square aluminum tube was 41.4KN, which was 140% higher than the average bending load (F) of the unfilled sill structure. When the pressing displacement of the pressing roller 2 is 100mm, the bending bearing force (B) of the filling type vehicle doorsill structure comprising the foamed aluminum supporting pipe and the square aluminum pipe can still meet the optimization target (E). Therefore, the bending bearing capacity of the filling type vehicle door sill structure comprising the foamed aluminum supporting tube and the square aluminum tube far exceeds the optimization target (E), and meanwhile, the filling weight increment is remarkably reduced due to the matched design of the foamed aluminum supporting tube and the square aluminum tube, so that the bending bearing force of the vehicle door sill is greatly improved while the weight is increased to a small extent.
Compared with a round aluminum pipe, the square aluminum pipe is higher in rigidity in the bending bearing direction and better in bending bearing capacity.
With continued reference to fig. 9, the filled vehicle sill structure including the L-shaped aluminum foam stay and square aluminum tubes had an average bending load (C) of 35.7KN, which was 106% higher than the bending load (F) of the unfilled sill and 20% lower than the filled vehicle sill structure including the aluminum foam stay and square aluminum tubes (a). Therefore, although the bending bearing force of the filling type vehicle door sill structure comprising the L-shaped foamed aluminum support strips and the square aluminum pipes is lower than that of the filling type vehicle door sill structure comprising the foamed aluminum support tubes and the square aluminum pipes, the optimization target (E) is still achieved, and meanwhile, the filling weight increment is further reduced and the lightweight design is realized due to the design that the foamed aluminum is arranged at the inner corners of the door sill shell.
In summary, the vehicle doorsill provided in the embodiment of the present invention has the internal filling reinforcement structure including the aluminum pipe and the foamed aluminum, and the foamed aluminum has a low density and is embedded with the aluminum pipe, so that the bending resistance of the doorsill is greatly improved on the premise of increasing a small weight, and an optimization target is achieved. The filled type vehicle doorsill comprising the L-shaped foamed aluminum supporting strips and the aluminum tubes is only provided with foamed aluminum at the inner corners of the doorsill, so that the structural weight of the doorsill is further reduced while the optimization target is achieved, and the weight of the whole vehicle is further reduced. Meanwhile, the foamed aluminum in the inner filling reinforcing structure can absorb the impact energy received by the vehicle doorsill in the vehicle collision, reduce the injury of passengers in the collision and improve the safety of the vehicle doorsill.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A vehicle rocker structure, characterized by comprising a rocker shell (1) and an internally filled reinforcement structure (3);
the inner filling reinforcing structure (3) is arranged in the doorsill shell (1), the inner filling reinforcing structure (3) comprises foamed aluminum and an aluminum pipe which are matched with each other, the aluminum pipe extends along the length direction of the doorsill shell (1), and the foamed aluminum is arranged between the aluminum pipe and the doorsill shell (1).
2. The vehicle door sill structure according to claim 1, characterized in that the door sill shell (1) comprises two opposite shells that are spliced to each other, the cross-section of the door sill shell (1) comprising a circle, a square, a rectangle or an ellipse.
3. The vehicle rocker structure according to claim 2, characterised in that the rocker shell (1) comprises a letter-top shell (102) and a letter-bottom shell (101), the letter-top shell (102) and the letter-bottom shell (101) being joined in an open-faced manner.
4. The vehicle rocker structure according to claim 1, wherein the aluminum pipe has a cross section including a circular, square, rectangular or oval shape.
5. The vehicle rocker structure according to claim 1, characterised in that the foamed aluminium forms a foamed aluminium support tube (301) along the length of the rocker shell (1), the outer wall of the foamed aluminium support tube (301) being in intimate contact with the inner wall of the rocker shell (1), the aluminium tube being built into the foamed aluminium support tube (301), the outer wall of the aluminium tube being in intimate contact with the inner wall of the foamed aluminium support tube (301).
6. The vehicle door sill structure according to claim 5, characterized in that the foamed aluminium support tube (301) leaves a cavity in the centre with a square cross-section, and the aluminium tube is a square aluminium tube, which is placed in the cavity.
7. The vehicle door sill structure according to claim 1, characterized in that the foamed aluminium forms a foamed aluminium bracing strip extending in the length direction of the door sill shell (1), which foamed aluminium bracing strip is supported between the aluminium tube and the door sill shell (1).
8. Vehicle door sill structure according to claim 7, characterised in that the foamed aluminium support strips comprise four foamed aluminium support strips (303) having an L-shaped cross-section, the aluminium tubes being square aluminium tubes, the four foamed aluminium support strips (303) being located at four inner corners of the sill shell (1), respectively, each corner of the square aluminium tubes being in close contact with two sides of the inside of the L-shape of one of the foamed aluminium support strips (303), respectively.
9. The vehicle rocker structure according to any of claims 1 to 8, wherein a portion of the foamed aluminum is filled in the interior of the aluminum pipe.
10. A vehicle characterized by comprising the vehicle rocker structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010479568.1A CN111619679A (en) | 2020-05-29 | 2020-05-29 | Vehicle threshold structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010479568.1A CN111619679A (en) | 2020-05-29 | 2020-05-29 | Vehicle threshold structure and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN111619679A true CN111619679A (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010479568.1A Pending CN111619679A (en) | 2020-05-29 | 2020-05-29 | Vehicle threshold structure and vehicle |
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| Country | Link |
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| CN (1) | CN111619679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339865A (en) * | 2020-11-25 | 2021-02-09 | 浙江吉利控股集团有限公司 | Collision energy-absorbing structure, vehicle body structural part and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6135542A (en) * | 1996-11-21 | 2000-10-24 | Wilhelm Karmann Gmbh | Car body part, particularly a contoured frame member |
| CN204821352U (en) * | 2015-05-27 | 2015-12-02 | 江苏公爵新能源汽车有限公司 | Automobile threshold footboard |
| CN105691468A (en) * | 2016-03-09 | 2016-06-22 | 华南理工大学 | Side impact energy-absorbing high-rigidity all-aluminum light-weight door sill structure for automobile |
| CN107512316A (en) * | 2017-08-16 | 2017-12-26 | 吉林大学 | A kind of segment type automobile B-column structure |
-
2020
- 2020-05-29 CN CN202010479568.1A patent/CN111619679A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6135542A (en) * | 1996-11-21 | 2000-10-24 | Wilhelm Karmann Gmbh | Car body part, particularly a contoured frame member |
| CN204821352U (en) * | 2015-05-27 | 2015-12-02 | 江苏公爵新能源汽车有限公司 | Automobile threshold footboard |
| CN105691468A (en) * | 2016-03-09 | 2016-06-22 | 华南理工大学 | Side impact energy-absorbing high-rigidity all-aluminum light-weight door sill structure for automobile |
| CN107512316A (en) * | 2017-08-16 | 2017-12-26 | 吉林大学 | A kind of segment type automobile B-column structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112339865A (en) * | 2020-11-25 | 2021-02-09 | 浙江吉利控股集团有限公司 | Collision energy-absorbing structure, vehicle body structural part and vehicle |
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Application publication date: 20200904 |