Threshold beam, threshold beam assembly structure and vehicle

Abstract

The utility model provides a threshold beam, a threshold beam assembly structure and a vehicle. The doorsill beam comprises a main body part, a first partition plate and at least one second partition plate. The main body part comprises an energy absorption cavity, and the main body part comprises a top plate and a bottom plate which are oppositely arranged. The first partition plate is located in the energy absorption cavity, the top end of the first partition plate is connected with the top plate, and the bottom end of the first partition plate is connected with the bottom plate; the first partition plate divides the energy absorption cavity into an inner side cavity body and an outer side cavity body. The outer side cavity is a hollow cavity defined by the main body part and the first partition plate. The at least one second partition plate is located in the inner side cavity and divides the inner side cavity into at least two sub-cavities; the at least two sub-cavities are arranged in the direction from the top plate to the bottom plate. The collapse energy absorption effect of the doorsill beam when the doorsill beam is subjected to external force can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly relates to a sill beam, a sill beam assembly structure and a vehicle. Background Art

[0002] As a part of the vehicle bottom structure, the sill beam structure is crucial for the rigidity and stability of the entire vehicle body. At the same time, the sill beam structure can enhance the anti-collision performance of the vehicle side. During a side collision, the sill beam structure can absorb and disperse the collision force, reduce the intrusion amount of the occupant compartment, and thus protect the safety of the passengers in the vehicle.

[0003] The sill beam structure is provided with an energy-absorbing cavity, so that the sill beam can collapse and absorb energy when subjected to an external force. The energy-absorbing effect of the existing sill beam structure needs to be improved. Utility Model Content

[0004] Embodiments of the present application provide a sill beam, a sill beam assembly structure and a vehicle.

[0005] According to the first aspect of the embodiments of the present application, a sill beam is provided. The sill beam includes:

[0006] A main body portion, including an energy-absorbing cavity, the main body portion including a top plate and a bottom plate arranged oppositely;

[0007] A first partition plate, located in the energy-absorbing cavity, the top end of the first partition plate being connected to the top plate, and the bottom end of the first partition plate being connected to the bottom plate; the first partition plate divides the energy-absorbing cavity into an inner cavity and an outer cavity; the outer cavity is a hollow cavity formed by enclosing the main body portion and the first partition plate;

[0008] At least one second partition plate, located in the inner cavity, dividing the inner cavity into at least two sub-cavities; the at least two sub-cavities are arranged in the direction from the top plate to the bottom plate.

[0009] In an embodiment of the present application, the at least two sub-cavities include a first sub-cavity and a second sub-cavity located between the first sub-cavity and the top plate, and the height of the first sub-cavity is greater than the height of the second sub-cavity.

[0010] In an embodiment of the present application, the range of the height difference between the first sub-cavity and the second sub-cavity is 2 mm to 4 mm.

[0011] In an embodiment of the present application, the main body portion further includes an outer plate located on the side of the outer cavity away from the inner cavity, and the top plate includes an inclined plate portion located at the top of the outer cavity, and the inclined plate portion is inclined relative to the bottom plate.

[0012] In one embodiment of the present application, the range of the angle between the inclined plate portion and the bottom plate is 15° to 30°.

[0013] In one embodiment of the present application, each of the second partitions is perpendicular to the first partition.

[0014] In one embodiment of the present application, the material of the sill beam is aluminum alloy; and / or,

[0015] The sill beam is of an integral structure.

[0016] According to the second aspect of the embodiments of the present application, a sill beam assembly structure is provided, including a sill reinforcement beam, a sill inner panel, and the above-mentioned sill beam;

[0017] The sill reinforcement beam includes a reinforcing side plate and a reinforcing bottom plate connected to the reinforcing side plate. The sill beam is located between the reinforcing side plate and the sill inner panel and on the reinforcing bottom plate; the reinforcing side plate and the sill inner panel are respectively connected to opposite sides of the main body portion, and the reinforcing bottom plate is connected to the bottom plate of the main body portion.

[0018] In one embodiment of the present application, the reinforcing side plate is riveted to the main body portion, and the reinforcing bottom plate is riveted to the bottom plate of the sill beam; and / or,

[0019] The sill inner panel is bonded to the main body portion by structural adhesive.

[0020] According to the third aspect of the embodiments of the present application, a vehicle is provided, and the vehicle includes the above-mentioned sill beam assembly structure.

[0021] The main technical effects achieved by the embodiments of the present application are as follows:

[0022] The sill beam, the sill beam assembly structure, and the vehicle provided by the embodiments of the present application divide the energy absorption cavity of the main body portion into an inner cavity and an outer cavity by providing a first partition. The inner cavity is a hollow cavity formed by enclosing the main body portion and the first partition. The second partition divides the outer cavity into at least two sub-cavities arranged in the direction from the top plate to the bottom plate, which can effectively improve the collapse energy absorption effect of the sill beam when subjected to external forces; and the first partition and the second partition located inside the main body portion can improve the strength of the sill beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of a sill beam provided by an exemplary embodiment of the present application;

[0024] Figure 2 is a side view of a sill beam provided by an exemplary embodiment of the present application;

[0025] Figure 3It is a side view of a partial structure of a vehicle provided by an exemplary embodiment of the present application;

[0026] Figure 4 It is a three-dimensional schematic diagram of a partial structure of a vehicle provided by an exemplary embodiment of the present application. Specific embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship and movement conditions between components in a specific posture; if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0029] The embodiments of the present application provide a sill beam. As Figure 1 and Figure 2 shown, the sill beam 100 includes a main body portion 10, a first partition 20, and at least one second partition 30. The main body portion 10 includes an energy absorption cavity 11, and the main body portion 10 includes a top plate 101 and a bottom plate 102 arranged opposite to each other. The first partition 20 is located in the energy absorption cavity 11, the top end of the first partition 20 is connected to the top plate 101, and the bottom end of the first partition 20 is connected to the bottom plate 102; the first partition 20 divides the energy absorption cavity 11 into an inner cavity 111 and an outer cavity 112. The outer cavity 112 is a hollow cavity formed by enclosing the main body portion 10 and the first partition 20. That is, there is only one outer cavity 112 on the side of the first partition 20 away from the inner cavity 111 of the sill beam 100, and no other cavities are provided. Each of the second partitions 30 is located in the inner cavity 111 and divides the inner cavity 111 into at least two sub-cavities 1111; the at least two sub-cavities 1111 of the inner cavity 111 are arranged in the direction from the top plate 101 to the bottom plate 102.

[0030] Through experimental verification, for the sill beam provided by the embodiment of the present application, by arranging the first partition 20 to divide the energy absorption cavity 11 of the main body 10 into an inner cavity 111 and an outer cavity 112, and the inner cavity 111 is a hollow cavity, and the second partition 30 divides the outer cavity 112 into at least two sub-cavities 1111 arranged in the direction from the top plate 101 to the bottom plate 102, the collapse energy absorption effect of the sill beam when subjected to external force can be effectively improved; and the first partition 20 and the second partition 30 located inside the main body 10 can improve the strength of the sill beam.

[0031] In the embodiment of the present application, the words indicating directions such as "inner", "outer", "top", and "bottom" are defined according to the position of the sill beam after being installed on the vehicle. For example, "inner" is closer to the interior space of the vehicle than "outer", and "top" is closer to the top of the vehicle than "bottom".

[0032] In one embodiment, the inner cavity 111 and each sub-cavity 1111 of the outer cavity 112 extend along the length direction of the sill beam 100 respectively, and penetrate through the opposite sides of the sill beam 100 respectively.

[0033] In one embodiment, as Figure 2 shown, the at least two sub-cavities 1111 include a first sub-cavity 1112 and a second sub-cavity 1113 located between the first sub-cavity 1112 and the top plate 101, and the height of the first sub-cavity 1112 is greater than the height of the second sub-cavity 1113. Wherein, the height refers to the dimension in the direction perpendicular to the bottom plate 102. Through experimental verification, such a setting can further improve the collapse energy absorption effect of the sill beam when subjected to external force.

[0034] Furthermore, the range of the height difference between the first sub-cavity 1112 and the second sub-cavity 1113 is 2 mm to 4 mm. Through experimental verification, the setting of the above numerical range can effectively improve the collapse energy absorption effect of the sill beam when subjected to external force. In some embodiments, the height difference between the first sub-cavity 1112 and the second sub-cavity 1113 is 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, etc.

[0035] In one embodiment, as Figure 2As shown, the inner cavity 111 only includes two sub-cavities 1111: a first sub-cavity 1112 and a second sub-cavity 1113 located between the first sub-cavity 1112 and the top plate 101. The sill beam 100 includes a second partition 30, and this second partition 30 is located between the first sub-cavity 1112 and the second sub-cavity 1113. In other embodiments, the inner cavity 111 may include three or more sub-cavities 1111. The number of second partitions 30 included in the sill beam 100 is one less than the number of sub-cavities 1111, and a second partition 30 is provided between any two adjacent sub-cavities 1111 respectively.

[0036] In one embodiment, as Figure 2 shown, the main body portion 10 further includes an outer plate 103 and an inner plate 104. The outer plate 103 is located on the side of the outer cavity 112 away from the inner cavity 111, and the inner plate 104 is located on the side of the inner cavity 111 away from the outer cavity 112; the top ends of the outer plate 103 and the inner plate 104 are respectively connected to the top plate 101, and the bottom ends of the outer plate 103 and the inner plate 104 are respectively connected to the bottom plate 102.

[0037] In one embodiment, as Figure 2 shown, the top plate 101 includes an inclined plate portion 1011 located at the top of the outer cavity 112, and the inclined plate portion 1011 is inclined relative to the bottom plate 102. With such a setting, the sill beam 100 can better cope with the external force received on the side of the sill beam 100; and it helps to reduce the material used for the sill beam 100 and lower the cost. The outer cavity 112 is formed by enclosing the outer plate 103, the inclined plate portion 1011, the first partition 20, and the part of the bottom plate 102 opposite to the inclined plate portion 101.

[0038] In one embodiment, the range of the angle between the inclined plate portion 1011 and the bottom plate 102 is 15° to 30°. Through experimental verification, when the angle between the inclined plate portion 1011 and the bottom plate 102 is set within the range of 15° to 30°, the sill beam 100 can better cope with the external force received on the side of the sill beam 100, which helps to improve the crash energy absorption effect of the sill beam 100. In some embodiments, the angle between the inclined plate portion 1011 and the bottom plate 102 can be 15°, 20°, 25°, 30°, etc.

[0039] In one embodiment, as Figure 2As shown, the top plate 101 includes a flat plate portion 1012 located at the top of the inner cavity 111. The flat plate portion 1012 is connected to the inclined plate portion 1011, and the connection between the flat plate portion 1012 and the inclined plate portion 1011 is connected to the top end of the first partition 20. The flat plate portion 1012 is substantially parallel to the bottom plate 12. The inner cavity 111 is formed by enclosing the flat plate portion 1012, the first partition 20, the bottom plate 102, the portion opposite to the flat plate portion 1012, and the inner plate 104.

[0040] In one embodiment, as Figure 2 shown, the second partition 30 and the first partition 20 are perpendicular to each other. The perpendicularity of the second partition 30 and the first partition 20 means that they are substantially perpendicular, including the case where the second partition 30 and the first partition 20 are perpendicular to each other, and the case where the included angle between the second partition 30 and the first partition 20 is close to 90°. For example, when the included angle between the second partition 30 and the first partition 20 is between 85° and 90°, it can be considered that the second partition 30 and the first partition 20 are substantially perpendicular to each other. By setting the second partition 30 and the first partition 20 to be perpendicular to each other, it helps to improve the strength of the sill beam 100.

[0041] In one embodiment, the material of the sill beam 100 is aluminum alloy. With this setting, the sill beam 100 can have the advantages of light weight, high strength, corrosion resistance, easy processing, environmental protection, etc., which is more in line with the lightweight design concept of the sill beam, helps to reduce the body weight of the vehicle where the sill beam is located, and thus effectively reduces the fuel consumption and emissions of the vehicle.

[0042] In one embodiment, the sill beam 100 is an integral structure. Compared with the scheme where the sill beam is obtained by welding multiple components, when the sill beam 100 is an integral structure, welding is not required during the manufacturing process of the sill beam 100, which can avoid the problems of welding stress concentration between components causing welding deformation and low manufacturing accuracy caused by welding deviation, improve the manufacturing accuracy of the sill beam 100, and at the same time save the manufacturing tools (such as molds, jigs, and inspection tools) used in the production of the sill beam, reducing the production cost of the sill beam 100; the integral structure of the sill beam 100 can also improve the strength of the sill beam 100.

[0043] In some embodiments, the material of the sill beam 100 is aluminum alloy, and the sill beam 100 is an integral structure obtained by an extrusion molding process. In this way, the material of the sill beam 100 can be 100% recycled.

[0044] In one embodiment, as Figure 1 shown, a plurality of grooves 105 are provided on the surface of the top plate 101 of the main body portion 10 away from the bottom plate 102. The provision of the grooves 105 can further reduce the weight of the sill beam 100 and at the same time reduce the material used for the sill beam 100.

[0045] The embodiment of the present application also provides a sill beam assembly structure, as Figure 3 shown. The sill beam assembly structure includes a sill reinforcement beam 40, a sill inner panel 50, and the sill beam 100 described in any of the above embodiments. The sill reinforcement beam 40 includes a reinforcement side plate 41 and a reinforcement bottom plate 42 connected to the reinforcement side plate 41. The sill beam 100 is located between the reinforcement side plate 41 and the sill inner panel 50 and on the reinforcement bottom plate 42. The reinforcement side plate 41 and the sill inner panel 50 are respectively connected to opposite sides of the main body portion 10, and the reinforcement bottom plate 42 is connected to the bottom plate 102 of the main body portion 10. Specifically, the reinforcement side plate 41 is connected to the outer side plate 103 of the main body portion 10, and the sill inner panel 50 is connected to the inner side plate 104 of the main body portion 10.

[0046] In one embodiment, the reinforcement side plate 41 is riveted to the outer side plate 103 of the main body portion 10, and the reinforcement bottom plate 42 is riveted to the bottom plate 102 of the main body portion 10. As Figure 3 shown, the reinforcement side plate 41 is riveted to the outer side plate 103 of the main body portion 10 by a rivet 70, and the reinforcement bottom plate 42 is riveted to the bottom plate 102 of the main body portion 10 by a rivet 70. Specifically, the reinforcement side plate 41 can be riveted to the outer side plate 103 of the main body portion 10 by using a rotary tapping riveting process, and the reinforcement bottom plate 42 can be riveted to the bottom plate 102 of the main body portion 10 by using a rotary tapping riveting process. The rotary tapping riveting process is a cold forming process that performs tapping and riveting after the sheet material is thermally deformed by high-speed rotation. In this way, while connecting the sill beam 100 to the reinforcement side plate 41 and the reinforcement bottom plate 42, good watertightness, airtightness, and dynamic load-bearing capacity between the sill beam 100 and the sill reinforcement beam 40 can be ensured. In some embodiments, the reinforcement side plate 41 is riveted to the outer side plate 103 of the main body portion 10 by a plurality of rivets 70, and the reinforcement bottom plate 42 is riveted to the bottom plate 102 of the main body portion 10 by a plurality of rivets 70.

[0047] In one embodiment, the sill inner panel 50 is bonded to the main body portion 10 by structural adhesive. Specifically, the sill inner panel 50 is bonded to the inner side plate 104 of the main body portion 10 by structural adhesive. With such a setting, when assembling the sill inner panel 50 and the sill beam 100, it is convenient for the operator to operate, and a firm connection between the sill inner panel 50 and the inner side plate 104 of the main body portion 10 can be ensured.

[0048] In one embodiment, as Figure 3 and Figure 4As shown, the sill beam assembly structure further includes a sill beam reinforcing top plate 60, which is located on top of the sill reinforcing beam 40 and is connected to the sill reinforcing beam 40; the sill beam reinforcing top plate 60 is located outside the sill inner panel 50 and is connected to the sill inner panel 50. In some embodiments, the sill beam reinforcing top plate 60 is welded to the sill reinforcing beam 40, and the sill beam reinforcing top plate 60 is welded to the sill inner panel 50.

[0049] The embodiment of the present application also provides a vehicle, which includes the sill beam assembly structure described in any of the above embodiments.

[0050] In one embodiment, as Figure 3 and Figure 4 shown, the vehicle further includes a carriage floor 80, which is located on top of the sill beam reinforcing top plate 60 and the sill inner panel 50 and is respectively connected to the sill beam reinforcing top plate 60 and the sill inner panel 50.

[0051] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A threshold beam, characterized in that: The threshold beam comprises: A main body, including an energy absorbing cavity, wherein the main body includes a top plate and a bottom plate that are arranged oppositely; a first baffle, located in the energy absorbing cavity, wherein the top end of the first baffle is connected to the top plate, and the bottom end of the first baffle is connected to the bottom plate; the first baffle divides the energy absorbing cavity into an inner cavity and an outer cavity; the outer cavity is a hollow cavity formed by the main body and the first baffle; At least one second partition is located in the inner cavity, dividing the inner cavity into at least two sub-cavities; the at least two sub-cavities are arranged in a direction from the top plate to the bottom plate.

2. The door sill beam according to claim 1, characterized in that: The at least two sub-cavities include a first sub-cavity and a second sub-cavity located between the first sub-cavity and the top plate, and a height of the first sub-cavity is greater than a height of the second sub-cavity.

3. The door sill beam according to claim 2, characterized in that: The height difference between the first sub-cavity and the second sub-cavity is in the range of 2 mm to 4 mm.

4. The door sill beam according to claim 1, characterized in that: The main body also includes an outer plate located at a side of the outer cavity away from the inner cavity, and the top plate includes an inclined plate portion located at the top of the outer cavity, and the inclined plate portion is inclined relative to the bottom plate.

5. The door sill beam according to claim 4, characterized in that: The included angle between the inclined plate portion and the bottom plate is in the range of 15° to 30°.

6. The door sill beam according to claim 1, characterized in that: Each of the second partitions is perpendicular to the first partitions.

7. The door sill beam according to claim 1, characterized in that: The material of the threshold beam is aluminum alloy; and / or, The threshold beam is an integrated structure.

8. A threshold beam assembly structure, characterized in that: A sill reinforcement beam, a sill inner plate and the sill beam according to any one of claims 1 to 7; The threshold reinforcement beam includes a reinforcement side panel and a reinforcement bottom panel connected to the reinforcement side panel. The threshold beam is located between the reinforcement side panel and the threshold inner panel and on the reinforcement bottom panel. The reinforcement side panel and the threshold inner panel are respectively connected to opposite sides of the main body, and the reinforcement bottom panel is connected to the bottom panel of the main body.

9. The door sill beam assembly structure according to claim 8, characterized in that: The reinforced side plate is riveted to the main body, and the reinforced bottom plate is riveted to the bottom plate of the door sill beam; and / or, The rocker inner plate is bonded to the main body by structural adhesive.

10. A vehicle, characterized in that: The vehicle comprises the rocker beam assembly structure according to claim 8 or 9.

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