Variable cross-section tail beam and frame

Abstract

The utility model relates to the technical field of automobile frames, in particular to a variable cross-section tail beam and a frame, the variable cross-section tail beam comprises a first mounting seat, a connecting plate and a second mounting seat which are integrally formed, and the connecting plate comprises a first connecting section and two second connecting sections arranged on the two sides of the first connecting section respectively; the two second connecting sections are correspondingly connected with one side edge of the first mounting base and one side edge of the second mounting base correspondingly, and the sides, away from the connecting plate, of the first mounting base and the second mounting base extend towards the same side of the connecting plate. The thickness of the first mounting base and the second mounting base is larger than or equal to that of the second connecting section, and the thickness of the end, away from the first connecting section, of the second connecting section is larger than that of the first connecting section, so that the machining difficulty of the tail beam can be effectively lowered, and the bending and twisting resistance of the tail beam can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile frames, and in particular to a variable-section tail beam and a frame. Background Art

[0002] The frame is the key structure that bears stress on the vehicle. When the vehicle is turning or passing through bumpy roads, the entire frame is subjected to extremely large bending and torsion forces. The tail beam is an important force-bearing and anti-bending and torsion component at the rear of the frame. The structure and performance of the tail beam have a great impact on the performance of the entire vehicle.

[0003] The tail beams of existing heavy trucks are generally made of specific automotive steels that are stamped and welded. This type of automotive steel is heavy, and when producing the tail beam, the number of parts is large, resulting in a relatively complicated production process for the tail beam, and the tail beam produced in this way also has poor bending and torsional resistance. Utility Model Content

[0004] The present application provides a variable-section tail beam and a vehicle frame to solve the problem that the existing tail beam production process is relatively complicated and has poor bending and torsion resistance.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] In a first aspect, the present application provides a variable-section tail beam, comprising an integrally formed first mounting seat, a connecting plate, and a second mounting seat, wherein the connecting plate comprises a first connecting section and two second connecting sections disposed on both sides of the first connecting section, and the two second connecting sections are respectively connected to one side edge of the first mounting seat and the second mounting seat, and the first mounting seat and the second mounting seat have one side away from the connecting plate extending toward the same side of the connecting plate;

[0007] The thickness of the first mounting seat and the second mounting seat is greater than or equal to the thickness of the second connecting section, and the thickness of the second connecting section at one end away from the first connecting section is greater than the thickness of the first connecting section.

[0008] In some possible designs, the thickness of the second connecting section gradually decreases from the end connected to the first mounting seat or the second mounting seat to the first connecting section.

[0009] In some possible designs, the connections between the first mounting seat, the second mounting seat and the connecting plate are all smoothly transitioned.

[0010] In some possible designs, the first mounting seat, the second mounting seat, and the connecting plate have the same extension direction, and the connecting plate is provided with an arc-shaped groove at both ends of the extension direction.

[0011] In some possible designs, at least one weight-reducing hole is provided on the connecting plate.

[0012] In some possible designs, the first mounting seat and the second mounting seat are both provided with reinforcing ribs on a side away from the connecting plate.

[0013] In some possible designs, the reinforcing rib is located between the first mounting seat and the second mounting seat.

[0014] In some possible designs, the first mounting seat and the second mounting seat are each provided with at least one mounting hole for connecting with the longitudinal beam.

[0015] In some possible designs, the first mounting seat, the second mounting seat and the connecting plate are all aluminum alloy plates.

[0016] A second aspect of the present application provides a vehicle frame, comprising a longitudinal beam, and a variable-section tail beam as described in any one of the first aspects, wherein the variable-section tail beam is connected to the longitudinal beam.

[0017] Beneficial effects of the present application: In the variable-section tail beam and frame provided by the present application, the tail beam can reduce the number of parts required for the tail beam processing by setting an integrally formed first mounting seat, a second mounting seat and a connecting plate, thereby effectively reducing the processing difficulty of the tail beam, and the connecting plate includes a first connecting section and a second connecting section arranged on both sides of the first connecting section, the thickness of the first connecting section is less than the thickness of the second connecting section, and the two second connections are respectively connected to one side of the first mounting seat and the second mounting seat, so that the tail beam as a whole has a C-shaped structure, and the cross-sectional thickness of the cross beam is variable, the first mounting seat and the second mounting seat which are mainly used for stress are thicker, and the first connecting section which is less stressed and mainly used for energy transfer is thinner, which can not only achieve equal strength stress on the entire tail beam, but also reduce stress concentration and improve the bending and torsion resistance of the tail beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A three-dimensional diagram of a variable-section tail beam provided in an embodiment of the present application;

[0020] Figure 2 for Figure 1 The front view of the variable cross-section tail beam in FIG.

[0021] Figure 3 for Figure 1 A side view of the variable cross-section tail beam in FIG.

[0022] Figure 4 for Figure 1 Rear view of the variable-section tail boom.

[0023] Description of reference numerals:

[0024] 1- first mounting seat;

[0025] 2- Second mounting seat;

[0026] 3-Connection plate;

[0027] 31- first connecting section;

[0028] 32- second connecting section;

[0029] 4-Reinforcement ribs;

[0030] 5-Mounting holes;

[0031] 6-arc groove;

[0032] 7-Weight reduction holes.

[0033] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0035] Secondly, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Then, it should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0038] As mentioned in the background technology, the tail beam is an important force-bearing and anti-bending and torsion-resistant component at the rear of the frame. The structure and performance of the tail beam will have a great impact on the performance of the entire vehicle. Therefore, there are high requirements for the production and manufacturing of the tail beam.

[0039] At present, the tail beam of the frame of a heavy truck needs to be stamped, bent or welded from multiple parts made of specific steel. This processing technology is not only costly, but also complicated to operate and inefficient.

[0040] In addition, this particular steel is heavy, so the tail beam made in this way is also heavy, with a large excess stress, which makes the tail beam less resistant to bending and torsional motion.

[0041] In order to avoid the above problems, the present application provides a variable-section tail beam and frame, in which the first mounting seat, the second mounting seat and the connecting plate are integrally formed, which can effectively reduce the processing difficulty, reduce stress concentration, and effectively improve the bending and torsional resistance of the tail beam.

[0042] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0043] See also Figure 1 and Figure 3 As shown, this embodiment provides a variable-section tail beam, which includes a first mounting seat 1, a connecting plate 3 and a second mounting seat 2.

[0044] The connecting plate 3 includes a first connecting section 31 and two second connecting sections 32. A second connecting section 32 is provided on each side of the first connecting section 31. The two second connecting sections 32 are respectively connected to one side of the first mounting seat 1 and the second mounting seat 2. The first mounting seat 1 and the second mounting seat 2 are both extended toward the same side of the connecting plate 3 away from the connecting plate 3. Figure 1 The Y direction of the mounting base 1 is extended so that a C-shaped structure is formed between the first mounting base 1, the connecting plate 3 and the second mounting base 2.

[0045] The first mounting seat 1, the second mounting seat 2 and the connecting plate 3 have the same extension direction. For the thickness of the first mounting seat 1, the second mounting seat 2 and the connecting plate 3, please refer to Figure 3 As shown, the thickness of the first mounting seat 1 and the second mounting seat 2 is greater than or equal to the thickness of the second connecting section 32, the thickness of the second connecting section 32 at the connection with the first mounting seat 1 or the second mounting seat 2 is greater than the thickness of the first connecting section 31, and the thickness of the second connecting section 32 on the side close to the first connecting section 31 can be the same as the thickness of the first connecting section 31, or can be greater than the thickness of the first connecting section 31.

[0046] It can be understood that in order to better connect the first mounting seat 1, the second mounting seat 2 and the connecting plate 3 and avoid the problem of stress concentration at the connection, the thickness of the connection between the first mounting seat 1 and the second mounting seat 2 and the second connecting section 32 can be made equal to the thickness of the second connecting section 32 on that side, so that the connection between the two is smooth, and the thickness of the second connecting section 32 and the first connecting section 31 is also the same.

[0047] Of course, the first connecting section 31 can have the same overall thickness, or the thickness can gradually decrease from the connection with the first connecting section 31 toward the middle, as long as it does not affect the connection effect with the second connecting section 32 and can meet the use requirements of the tail beam, this embodiment does not limit it.

[0048] In addition, in this embodiment, the first mounting seat 1, the second mounting seat 2 and the connecting plate 3 are integrally formed to reduce the number of parts required for the tail beam processing and reduce the processing difficulty of the tail beam production.

[0049] It is understandable that the materials used for the first mounting seat 1, the second mounting seat 2 and the connecting plate 3 only need to meet the requirements of vehicle use and can be formed in one step during processing, and this embodiment does not limit them.

[0050] For example, the first mounting seat 1, the second mounting seat 2 and the connecting plate 3 are all aluminum alloy plates. Aluminum alloy is an alloy based on aluminum with a certain amount of other alloying elements added. It has low density, high strength, good casting performance and plastic processing performance, and is one of the light metal materials. By processing with aluminum alloy as the base material, the first mounting seat 1, the second mounting seat 2 and the connecting plate 3 are formed at one time without welds, so that the tail beam has no risk of stress concentration, which can make up for the disadvantages of aluminum alloy material with low hardness and small elongation compared with steel plate material, and give full play to the advantage of aluminum alloy material in lightweight. In addition, the processing technology of aluminum alloy is simple, which helps to reduce production difficulty and production cost.

[0051] It is understandable that the first mounting seat 1 and the second mounting seat 2 may be parallel to each other, or may be arranged at an acute angle therebetween, and may be rotated according to actual needs, which is not limited in this embodiment.

[0052] Exemplarily, the second mounting seat 2 is perpendicular to the connecting plate 3, the angle between the first mounting seat 1 and the second mounting seat 2 is an acute angle, and the angle between the first mounting seat 1 and the connecting plate 3 is an obtuse angle.

[0053] Exemplarily, the first mounting seat 1 and the second mounting seat 2 are both perpendicular to the connecting plate 3 .

[0054] In the cross-section of the variable-section tail beam provided in this embodiment, the tail beam as a whole is a non-uniform-thickness thin-walled structure similar to a C-shape. The thickness of the first mounting seat 1 and the second mounting seat 2 is relatively large and can effectively bear force, while the thickness of the first connecting section 31 is relatively thin and can effectively transfer energy between the first mounting seat 1 and the second mounting seat 2. Such a setting method can, on the one hand, reduce the weight of the tail beam, and on the other hand, such a structure can achieve equal-strength force on the entire tail beam. While making the tail beam have the advantages of being strong and simple to process, it can also improve the bending and torsion resistance of the tail beam and reduce the fracture failure rate of the tail beam due to stress concentration.

[0055] In some possible implementations, the thickness of the second connecting segment 32 gradually decreases along the direction approaching the first connecting segment 31 , and at the position connected to the first connecting segment 31 , its thickness is the same as the thickness of the first connecting segment 31 at that position.

[0056] It can be understood that the thickness of the side of the first connecting section 31 connected to the first mounting seat 1 or the second mounting seat 2 is also the same as the thickness of the side of the first mounting seat 1 or the second mounting seat 2 .

[0057] Such an arrangement ensures that the connections between the first mounting seat 1, the first connecting section 31, the second connecting section 32, and the second mounting seat 2 are all smoothly transitioned, and there are no abnormal protrusions or depressions on the first mounting seat 1, the first connecting section 31, the second connecting section 32, and the second mounting seat 2, thereby avoiding stress concentration and further improving the bending and torsional resistance of the tail beam.

[0058] Furthermore, the connections between the first mounting seat 1, the second mounting seat 2 and the connecting plate 3 are all smoothly transitioned, that is, the connection between the first mounting seat 1 and the second connecting section 32 adopts a large arc smooth transition, and the connection between the second mounting seat 2 and the second connecting section 32 also adopts a large arc smooth transition.

[0059] Such an arrangement ensures that there are no sharp points at the connection between the first mounting seat 1, the second mounting seat 2 and the connecting plate 3, thereby avoiding stress concentration at the connection and further improving the bending and torsion resistance of the tail beam.

[0060] In some possible embodiments, the first mounting seat 1, the second mounting seat 2, and the connecting plate 3 have the same extension direction, and the connecting plate 3 is provided with an arc-shaped groove 6 at both ends of its extension direction, and the arc-shaped groove 6 is recessed toward the inner side of the connecting plate 3. That is, it can be understood that the lengths of the first connecting segment 31 and the second connecting segment 32 at the position with the arc-shaped groove 6 are correspondingly reduced, so that an arc-shaped groove 6 that passes through the first connecting plate 3 and the second connecting plate 3 is formed at both ends of the first connecting segment 31 and the second connecting segment 32.

[0061] The opening of the arc-shaped groove 6 can reserve installation space for the air pipe and wiring harness of the whole vehicle, that is, the air pipe and wiring harness of the whole vehicle can be installed through the arc-shaped groove 6, thereby making the layout of the air pipe and wiring harness of the whole vehicle more beautiful, and at the same time will not cause adverse effects on the bending and torsion resistance of the tail beam.

[0062] For some possible implementations, see Figure 2 and Figure 4 As shown, at least one weight-reducing hole 7 is provided on the first connecting section 31 , that is, the weight-reducing hole 7 can be provided as one or more, and the specific number can be selected according to actual conditions, which is not limited in this embodiment.

[0063] After the weight-reducing holes 7 are provided, the weight of the connecting plate 3 can be effectively reduced, and the amount of material used can also be reduced, so as to further reduce the production cost of the tail beam.

[0064] It is understandable that the weight-reducing hole 7 can be any shape, such as a regular shape such as a circle, an ellipse, a square, or other irregular shapes, as long as it can reduce the weight of the support plate 3. This embodiment does not limit it here.

[0065] In some possible embodiments, the first mounting seat 1 and the second mounting seat 2 are both provided with reinforcing ribs 4 on the side away from the connecting plate 3, and the extending direction of the reinforcing ribs 4 is the same as the extending direction of the first mounting seat 1 and the second mounting seat 2, and the length is also the same.

[0066] After adding the reinforcing ribs 4, the bending and torsion resistance of the ends of the first mounting seat 1 and the second mounting seat 2 can be effectively improved, the problem of fracture failure can be avoided, and the performance of the tail beam can be improved.

[0067] Furthermore, the reinforcing rib 4 is located between the first mounting seat 1 and the second mounting seat 2, that is, the reinforcing rib 4 is arranged on the opposite side of the first mounting seat 1 and the second mounting seat 2, so that there will be no protrusion on the side of the first mounting seat 1 and the second mounting seat 2 facing away from each other, which can prevent the reinforcing rib 4 from colliding with other components during the use of the tail beam, thereby improving the safety of the use of the tail beam.

[0068] In some possible implementations, the first mounting seat 1 and the second mounting plate are both plates with two flat surfaces, and at least one mounting hole 5 is provided on the first mounting seat 1 and the second mounting seat 2 so that the tail beam can be connected to the longitudinal beam through the mounting hole 5.

[0069] It is understandable that the number of mounting holes 5 on the first mounting seat 1 and the second mounting seat 2 can be the same or different, and the positions of the mounting holes 5 on the first mounting seat 1 and the second mounting seat 2 can also be adjusted according to actual conditions, which is not limited in this embodiment.

[0070] In addition, when applied to some vehicles, the tail beam may collide with other parts during use. For example, the connection between the tractor and the trailer has a trailer pin extending about 10 cm. When in use, the tail beam is prone to collide with the trailer pin.

[0071] In order to avoid such problems, the overall height of the tail beam of this embodiment can be lowered, that is, the distance from the first mounting seat 1 to the second mounting seat 2 can be shortened to avoid the trailer pin colliding with the tail beam when the whole vehicle is detached, thereby effectively improving the safety of use.

[0072] An embodiment of the present application further provides a vehicle frame, which includes a longitudinal beam and the variable-section tail beam in the above embodiment, wherein the variable-section tail beam is used to be connected to the longitudinal beam.

[0073] It can be understood that the specific structure and working principle of the variable-section tail beam have been described in detail in the above embodiments, and will not be repeated here.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0075] It should be understood that the various numerical numbers involved in the embodiments of the present application are only used for the convenience of description and are not used to limit the scope of the embodiments of the present application.

[0076] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A variable cross-section tail beam, characterized in that: The invention comprises an integrally formed first mounting seat, a connecting plate and a second mounting seat, wherein the connecting plate comprises a first connecting section and two second connecting sections respectively arranged on both sides of the first connecting section, and the two second connecting sections are respectively connected to one side of the first mounting seat and the second mounting seat, and the first mounting seat and the second mounting seat have one side away from the connecting plate extending toward the same side of the connecting plate; The thickness of the first mounting seat and the second mounting seat is greater than or equal to the thickness of the second connecting section, and the thickness of the second connecting section at one end away from the first connecting section is greater than the thickness of the first connecting section.

2. The variable cross-section tail beam according to claim 1, characterized in that: The thickness of the second connecting section gradually decreases from the end connected to the first mounting seat or the second mounting seat to the first connecting section.

3. The variable cross-section tail beam according to claim 1, characterized in that: The connections between the first mounting seat, the second mounting seat and the connecting plate are all smoothly transitioned.

4. The variable cross-section tail beam according to claim 1, characterized in that: The first mounting seat, the second mounting seat and the connecting plate have the same extension direction, and the connecting plate is provided with an arc-shaped groove at both ends of the extension direction.

5. The variable cross-section tail beam according to claim 1, characterized in that: At least one weight-reducing hole is arranged on the connecting plate.

6. The variable cross-section tail beam according to any one of claims 1 to 5, characterized in that: The first mounting seat and the second mounting seat are both provided with reinforcing ribs on a side away from the connecting plate.

7. The variable cross-section tail beam according to claim 6, characterized in that: The reinforcing rib is located between the first mounting seat and the second mounting seat.

8. The variable cross-section tail beam according to any one of claims 1 to 5, characterized in that: The first mounting seat and the second mounting seat are each provided with at least one mounting hole for connecting with the longitudinal beam.

9. The variable cross-section tail beam according to any one of claims 1 to 5, characterized in that: The first mounting seat, the second mounting seat and the connecting plate are all aluminum alloy plates.

10. A vehicle frame, characterized in that: It comprises a longitudinal beam and a variable-section tail beam as claimed in any one of claims 1 to 9, wherein the variable-section tail beam is connected to the longitudinal beam.

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