Rear trailing arm structure, suspension assembly and vehicle

Abstract

The utility model discloses a rear trailing arm structure, suspension assembly and vehicle, the rear trailing arm structure comprises a main plate and a sealing plate, the end portion of the main plate is provided with a bearing support, the bearing support comprises a first support and a second support, the first support is of a U-shaped structure, the first support and at least part of the second support enclose a bearing installation space, and the second support is of a U-shaped structure. The first support comprises an upper support plate, a middle support plate and a lower support plate which are sequentially connected, a first cavity is defined by the middle support plate, the main plate and the sealing plate, and a second cavity is defined by the lower support plate and the main plate. According to the rear trailing arm structure, the overall structural strength of the rear trailing arm structure is improved, the structural strength of the position of the bearing support is particularly improved, and due to the fact that the second cavity is not provided with a large-amplitude bending structure, loads can be transmitted along the lower support plate and the main plate of the second cavity more smoothly; the durability of the joints of the main plate, the sealing plate and the bearing support of the rear trailing arm structure is improved, and the using safety of the whole vehicle is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and in particular to a rear longitudinal arm structure, a suspension assembly and a vehicle. Background Art

[0002] In the longitudinal arm two-link suspension structure, the shock absorber, coil spring, upper and lower control arms and stabilizer bar connecting rod are all installed on the rear longitudinal arm. The rear longitudinal arm structure in the prior art is difficult to meet the high durability requirements, and the durability of the connections between some components of the rear longitudinal arm structure is poor, affecting the safety of the entire vehicle. Utility Model Content

[0003] In view of this, the utility model aims to provide a rear longitudinal arm structure, a suspension assembly and a vehicle to solve the technical problem of poor durability of the rear longitudinal arm structure in the prior art.

[0004] The utility model provides a rear longitudinal arm structure, including a main board and a closing plate, a bearing bracket is arranged at the end of the main board, the bearing bracket includes a first bracket and a second bracket, the first bracket is a U-shaped structure, and it and at least part of the second bracket form a bearing installation space, the first bracket includes an upper bracket plate, a middle bracket plate and a lower bracket plate connected in sequence, a first cavity is formed between the middle bracket plate, the main board and the closing plate, and a second cavity is formed between the lower bracket plate and the main board.

[0005] Furthermore, the cross-sections of the main board and the sealing plate are both L-shaped, the main board includes a bottom plate and a side plate, the bearing bracket is arranged at the end of the bottom plate, and the first bracket and the second bracket are arranged perpendicular to the bottom plate.

[0006] Furthermore, the bearing bracket also includes a third bracket, a mounting hole is arranged at the end of the side plate, and the third bracket is arranged on the outside of the mounting hole.

[0007] Furthermore, the first end of the second bracket at least partially extends to the bottom of the base plate and is provided with a lower swing arm mounting bracket, wherein the lower swing arm mounting bracket is connected to the outer surface of the base plate via a first reinforcement plate, and the first reinforcement plate is deflected in a direction away from the bearing bracket.

[0008] Furthermore, it also includes a stabilizer bar connecting bracket, on which a second reinforcing plate is provided. The stabilizer bar connecting bracket is arranged on the outer side of the upper bracket plate, and the second reinforcing plate is connected to the upper surface of the sealing plate and deflected in a direction away from the bearing bracket.

[0009] Furthermore, it also includes an upper control arm mounting bracket, which includes a first mounting member and a second mounting member that are relatively arranged, the first mounting member is arranged on the outer side of the upper bracket plate and connected to the stabilizer bar connecting bracket, and the second mounting member is arranged at the second end of the second bracket.

[0010] Furthermore, a protrusion is arranged on the bottom plate, the protrusion is located on the outer side of the sealing plate, and a spring bracket is arranged on the protrusion.

[0011] Furthermore, it also includes a shock absorber bracket, which is arranged on the outside of the second bracket through a third reinforcement bracket.

[0012] The utility model also provides a suspension assembly, comprising the rear longitudinal arm structure.

[0013] The utility model also provides a vehicle, comprising the suspension assembly.

[0014] In the rear longitudinal arm structure of the utility model, the first bracket and the second bracket jointly form a bearing installation space, the middle bracket plate, the main plate and the closing plate form a first cavity, and the main plate and the lower bracket plate form a second cavity, thereby improving the overall structural strength of the rear longitudinal arm structure, and especially improving the structural strength at the bearing bracket position. Since there is no large-scale bending structure at the second cavity, the load can be more smoothly transmitted along the lower bracket plate and the main plate at the second cavity, thereby improving the durability of the connection between the main plate, the closing plate and the bearing bracket of the rear longitudinal arm structure, and ensuring the safety of the whole vehicle.

[0015] The suspension assembly and vehicle of the present invention have all the beneficial effects of the above-mentioned rear trailing arm structure, which will not be described in detail here.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is one of the schematic diagrams of the rear trailing arm structure provided by the utility model;

[0019] Figure 2 It is an exploded view of the rear trailing arm structure provided by the utility model;

[0020] Figure 3 It is a partially cutaway schematic diagram of the rear longitudinal arm structure provided by the utility model;

[0021] Figure 4 This is the second schematic diagram of the rear trailing arm structure provided by the utility model.

[0022] The above drawings include the following reference numerals:

[0023] 1. Main board; 11. Bottom plate; 12. Side plate; 13. Protrusion; 121. Mounting groove; 2. Closing plate; 3. Bearing bracket; 31. First bracket; 311. Upper bracket plate; 312. Middle bracket plate; 313. Lower bracket plate; 32. Second bracket; 33. Third bracket; 4. Lower control arm mounting bracket; 41. First reinforcement plate; 5. Stabilizer bar connecting bracket; 51. Second reinforcement plate; 6. Upper control arm mounting bracket; 61. First mounting piece; 62. Second mounting piece; 7. Spring bracket; 8. Shock absorber bracket; 81. Third reinforcement bracket; 100. First cavity; 200. Second cavity. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0025] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the utility model will occur to those skilled in the art.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0028] The utility model provides a rear longitudinal arm structure, including a main board 1 and a sealing plate 2, a bearing bracket 3 is arranged at the end of the main board 1, the bearing bracket 3 includes a first bracket 31 and a second bracket 32, the first bracket 31 is a U-shaped structure, and it and at least part of the second bracket 32 ​​form a bearing installation space, the first bracket 31 includes an upper bracket plate 311, a middle bracket plate 312 and a lower bracket plate 313 connected in sequence, the middle bracket plate 312, the main board 1 and the sealing plate 2 form a first cavity 100, and the lower bracket plate 313 and the main board 1 form a second cavity 200.

[0029] Combination Figure 1 , Figure 2 and Figure 4 As shown, the positive direction of the X-axis in the figure represents the front, the negative direction of the X-axis represents the back, the positive direction of the Y-axis represents the left, the negative direction of the Y-axis represents the right, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0030] Combination Figure 1 , Figure 2 and Figure 3As shown, the first bracket 31 is a U-shaped structure, and at least part of the second bracket 32 ​​encloses a square-shaped bearing installation space. The middle bracket plate 312, the main board 1 and the sealing plate 2 are welded to enclose the first cavity 100. The middle bracket plate 312 is connected to the front end of the sealing plate 2 (i.e., the end in the positive direction of the X-axis in the figure), and can block the port of the first cavity 100 to a certain extent. The front end part of the main board 1 is welded to the lower bracket plate 313 to enclose the second cavity 200. Corresponding mounting holes can be respectively provided on the upper bracket plate 311, the middle bracket plate 312, the lower bracket plate 313 and the second bracket 32 ​​for connecting and installing with the bearing.

[0031] The first bracket 31 and the second bracket 32 ​​of the utility model jointly form a bearing installation space, the middle bracket plate 312, the main board 1 and the closing plate 2 form a first cavity 100, and the main board 1 and the lower bracket plate 313 form a second cavity 200, which improves the overall structural strength of the rear longitudinal arm structure, and especially improves the structural strength at the position of the bearing bracket 3. Since there is no large-scale bending structure at the second cavity 200, the load can be more smoothly transmitted along the lower bracket plate 313 and the main board 1 at the second cavity 200, thereby improving the durability of the connection between the main board 1, the closing plate 2 and the bearing bracket 3 of the rear longitudinal arm structure, and ensuring the safety of the whole vehicle.

[0032] Furthermore, the cross-sections of the main board 1 and the sealing plate 2 are both L-shaped, the main board 1 includes a bottom plate 11 and a side plate 12, the bearing bracket 3 is arranged at the end of the bottom plate 11, and the first bracket 31 and the second bracket 32 ​​are arranged perpendicular to the bottom plate 11.

[0033] Combination Figure 1 and Figure 2 As shown, the cross-sections of the main board 1 and the sealing plate 2 are L-shaped, so that they can enclose the first cavity 100 with the middle bracket plate 312. The main board 1 includes a bottom plate 11 and a side plate 12. The bearing bracket 3 is integrally arranged at one end of the bottom plate 11 along the positive direction of the X-axis in the figure. The first bracket 31 and the second bracket 32 ​​are perpendicular to the bottom plate 11, thereby improving the structural strength of the bearing bracket 3 and ensuring the safety of the entire vehicle.

[0034] Furthermore, the bearing bracket 3 further includes a third bracket 33 , a mounting groove 121 is provided at the end of the side plate 12 , and the third bracket 33 is provided at the outer side of the mounting groove 121 .

[0035] Combination Figure 1 to Figure 2 As shown, the third bracket 33 is welded to the mounting groove 121 at one end of the side plate 12 along the positive direction of the X-axis in the figure, and the third bracket 33 is located outside the mounting groove 121. The third bracket 33 is provided with corresponding mounting holes for connecting with the bearing.

[0036] In this way, the structural strength of the bearing bracket 3 can be further improved to ensure the safety of the entire vehicle.

[0037] Furthermore, the first end of the second bracket 32 ​​extends to the bottom of the base plate 11 and is provided with a lower swing arm mounting bracket 4, and the lower swing arm mounting bracket 4 is connected to the outer surface of the base plate 11 through a first reinforcement plate 41, and the first reinforcement plate 41 is deflected in a direction away from the bearing bracket 3.

[0038] Combination Figure 1 and Figure 2 As shown, the lower end portion of the second bracket 32 ​​(i.e., the end in the opposite direction of the Z axis in the figure) extends to the bottom of the base plate 11, and the lower swing arm mounting bracket 4 is composed of two ear plate structures. The lower swing arm mounting bracket 4 is connected to the lower end of the second bracket 32 ​​of the bearing bracket 3 (i.e., the end in the opposite direction of the Z axis in the figure), and a first reinforcing plate 41 is provided on the lower swing arm mounting bracket 4 to be welded and fixed to the outer surface of the base plate 11. The first reinforcing plate 41 is deflected by a certain angle in the direction away from the bearing bracket 3, thereby increasing the connection length of the weld between the lower swing arm mounting bracket 4 and the main board 1. The load of the lower swing arm is transmitted to the lower swing arm mounting bracket 4, which will generate shear stress on the first reinforcing plate 41. Compared with the conventional technology where most of them are tensile stress, the first reinforcing plate 41 of the utility model improves the connection strength of the weld when it is subjected to complex loads from the coil spring, shock absorber and lower swing arm.

[0039] Furthermore, it also includes a stabilizer bar connecting bracket 5, on which a second reinforcing plate 51 is provided. The stabilizer bar connecting bracket 5 is arranged on the outer side of the upper bracket plate 311, and the second reinforcing plate 51 is connected to the upper surface of the sealing plate 2 and deflected in a direction away from the bearing bracket 3.

[0040] Combination Figure 1 and Figure 4 As shown, the stabilizer bar connecting bracket 5 is connected to the outer side of the upper bracket plate 311, and a second reinforcing plate 51 is integrally connected thereto. The second reinforcing plate 51 is connected to the upper surface of the sealing plate 2 and is deflected by a certain angle in a direction away from the bearing bracket 3 (in this embodiment, in the direction opposite to X in the figure and biased towards the positive direction of Y axis).

[0041] In this way, the structural strength of the stabilizer bar connecting bracket 5 can be improved, thereby ensuring the safety of the entire vehicle.

[0042] It also includes an upper control arm mounting bracket 6, which includes a first mounting member 61 and a second mounting member 62 that are relatively arranged. The first mounting member 61 is arranged on the outer side of the upper bracket plate 311 and is connected to the stabilizer bar connecting bracket 5, and the second mounting member 62 is arranged at the second end of the second bracket 32.

[0043] Combination Figure 1 and Figure 4 As shown, the first mounting member 61 and the second mounting member 62 are respectively provided with mounting holes for connection with the upper control arm, wherein the first mounting member 61 is arranged on the outer side of the upper bracket plate 311, and the second mounting member 62 is arranged at the upper end of the second bracket 32 ​​(i.e., the end along the positive direction of the Z axis in the figure).

[0044] In this way, the upper control arm mounting bracket 6 can be reinforced by the second reinforcement plate 51. The force on the upper control arm mounting bracket 6 is usually along the rotation axis direction of the upper control arm. Therefore, the second reinforcement plate 51 can extend the connection length of the weld, thereby improving the structural strength of the stabilizer bar connecting bracket 5 and the upper control arm mounting bracket 6. In addition, a groove structure can be set on the stabilizer bar connecting bracket 5 corresponding to the stabilizer bar connecting rod, and the stabilizer bar mounting hole is set in the groove structure, thereby further increasing the connection strength between the stabilizer bar connecting bracket 5 and the stabilizer bar connecting rod.

[0045] Furthermore, a protrusion 13 is provided on the bottom plate 11 , and the protrusion 13 is located on the outer side of the sealing plate 2 . A spring bracket 7 is provided on the protrusion 13 .

[0046] Combination Figure 1 , Figure 2 and Figure 4 As shown, a protrusion 13 is integrally connected to the bottom plate 11 , and the protrusion 13 protrudes to the outside of the sealing plate 2 , and a spring bracket 7 is welded to the protrusion 13 to be connected to the coil spring.

[0047] In this way, the structural strength of the spring bracket 7 can be improved, thereby improving the overall strength of the rear trailing arm structure.

[0048] It also includes a shock absorber bracket 8 , which is arranged on the outside of the second bracket 32 ​​through a third reinforcement bracket 81 .

[0049] Combination Figure 1 , Figure 2 and Figure 4 As shown, the shock absorber bracket 8 is integrally connected to the second bracket 32, and the third reinforcement bracket 81 is welded at the angle between the second bracket 32 ​​and the shock absorber bracket 8, thereby forming a support and reinforcement effect for the shock absorber bracket 8 and improving the structural strength of the shock absorber bracket 8.

[0050] The utility model also provides a suspension assembly, comprising the rear longitudinal arm structure.

[0051] The suspension assembly of the utility model adopts the above-mentioned rear longitudinal arm structure, and its first bracket 31 and the second bracket 32 ​​jointly enclose a bearing installation space, and the middle bracket plate 312, the main board 1 and the closing plate 2 form a first cavity 100, and the main board 1 and the lower bracket plate 313 form a second cavity 200, thereby improving the overall structural strength of the rear longitudinal arm structure, and especially improving the structural strength at the position of the bearing bracket 3. Since there is no large-scale bending structure at the second cavity 200, the load can be more smoothly transmitted along the lower bracket plate 313 and the main board 1 at the second cavity 200, thereby improving the durability of the connection between the main board 1, the closing plate 2 and the bearing bracket 3 of the rear longitudinal arm structure, and ensuring the safety of the whole vehicle.

[0052] The utility model also provides a vehicle, comprising the suspension assembly.

[0053] The vehicle of the utility model adopts the above-mentioned rear longitudinal arm structure in its suspension assembly, the first bracket 31 and the second bracket 32 ​​jointly form a bearing installation space, the middle bracket plate 312, the main board 1 and the closing plate 2 form a first cavity 100, and the main board 1 and the lower bracket plate 313 form a second cavity 200, thereby improving the overall structural strength of the rear longitudinal arm structure, and especially improving the structural strength at the position of the bearing bracket 3. Since there is no large-scale bending structure at the second cavity 200, the load can be more smoothly transmitted along the lower bracket plate 313 and the main board 1 at the second cavity 200, thereby improving the durability of the connection between the main board 1, the closing plate 2 and the bearing bracket 3 of the rear longitudinal arm structure, and ensuring the safety of the whole vehicle.

[0054] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0056] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0057] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rear trailing arm structure, characterized in that: It includes a main board and a sealing plate, a bearing bracket is arranged at the end of the main board, the bearing bracket includes a first bracket and a second bracket, the first bracket is a U-shaped structure, and it and at least part of the second bracket form a bearing installation space, the first bracket includes an upper bracket plate, a middle bracket plate and a lower bracket plate connected in sequence, a first cavity is formed between the middle bracket plate, the main board and the sealing plate, and a second cavity is formed between the lower bracket plate and the main board.

2. The rear trailing arm structure according to claim 1, characterized in that: The cross-sections of the main board and the sealing plate are both L-shaped. The main board includes a bottom plate and a side plate. The bearing bracket is arranged at the end of the bottom plate. The first bracket and the second bracket are arranged perpendicular to the bottom plate.

3. The rear trailing arm structure according to claim 2, characterized in that: The bearing bracket further includes a third bracket. A mounting hole is arranged at the end of the side plate, and the third bracket is arranged at the outside of the mounting hole.

4. The rear trailing arm structure according to claim 2, characterized in that: The first end of the second bracket extends to the bottom of the base plate and is provided with a lower swing arm mounting bracket, wherein the lower swing arm mounting bracket is connected to the outer surface of the base plate through a first reinforcement plate, and the first reinforcement plate is deflected in a direction away from the bearing bracket.

5. The rear trailing arm structure according to claim 2, characterized in that: It also includes a stabilizer bar connecting bracket, on which a second reinforcing plate is provided. The stabilizer bar connecting bracket is arranged on the outer side of the upper bracket plate, and the second reinforcing plate is connected to the upper surface of the sealing plate and deflected in a direction away from the bearing bracket.

6. The rear trailing arm structure according to claim 5, characterized in that: It also includes an upper control arm mounting bracket, which includes a first mounting member and a second mounting member arranged opposite to each other, the first mounting member is arranged on the outer side of the upper bracket plate and connected to the stabilizer bar connecting bracket, and the second mounting member is arranged at the second end of the second bracket.

7. The rear trailing arm structure according to claim 2, characterized in that: A protrusion is arranged on the bottom plate, the protrusion is located on the outer side of the sealing plate, and a spring bracket is arranged on the protrusion.

8. The rear trailing arm structure according to claim 2, characterized in that: It also includes a shock absorber bracket, which is arranged on the outer side of the second bracket through a third reinforcement bracket.

9. A suspension assembly, characterized in that: The rear trailing arm structure comprises the rear trailing arm structure as described in any one of claims 1 to 8.

10. A vehicle, characterized in that: Includes the suspension assembly as described in claim 9.

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