Plate spring support and vehicle

Abstract

The invention discloses a plate spring support and a vehicle, the plate spring support comprises a support main body, the support main body is an aluminum alloy piece and comprises a frame mounting part and a plate spring connecting part, the frame mounting part is suitable for being connected with a frame, the plate spring connecting part is connected below the frame mounting part, and a through hole is formed in the plate spring connecting part; the first lining is arranged in the through hole, and the first lining is suitable for being connected with a plate spring system; and the second bushing is a steel bushing and is arranged between the bracket main body and the first bushing. Therefore, the support body is arranged to be the aluminum alloy piece, the second lining is the steel lining and is arranged between the support body and the first lining, on the premise that the weight can be reduced, the structural strength near the through hole can be enhanced through the second lining, and therefore the structural design of the plate spring support can be optimized; the light weight degree of the plate spring support can be improved, and the structural strength of the plate spring support can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a leaf spring bracket and a vehicle. Background Art

[0002] The leaf spring bracket is a crucial component in the vehicle's suspension system, supporting the leaf springs. Under varying vehicle operating conditions, it bears significant loads. Furthermore, with market demands for increasing vehicle weight and cost, the leaf spring bracket is a key area for reducing chassis weight and costs.

[0003] In the related art, the leaf spring bracket is heavy, bulky, and expensive. At the same time, the bracket occupies a large space in the chassis layout, which needs to be improved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a leaf spring bracket having a higher structural strength and a lighter weight.

[0005] Another object of the present invention is to provide a vehicle.

[0006] According to an embodiment of the present invention, the leaf spring bracket includes: a bracket body, which is an aluminum alloy part and includes a frame mounting portion and a leaf spring connecting portion, the frame mounting portion is suitable for connecting to the frame, the leaf spring connecting portion is connected to the bottom of the frame mounting portion, and the leaf spring connecting portion is provided with a through hole; a first bushing, the first bushing is provided in the through hole, the first bushing is suitable for connecting to the leaf spring system; and a second bushing, the second bushing is a steel sleeve and is provided between the bracket body and the first bushing.

[0007] Therefore, by setting the bracket body as an aluminum alloy part and making the second bushing as a steel bushing and arranged between the bracket body and the first bushing, the structural strength near the through hole can be enhanced by the second bushing while reducing the weight, thereby optimizing the structural design of the leaf spring bracket, not only improving the lightweight degree of the leaf spring bracket, but also improving the structural strength of the leaf spring bracket.

[0008] In some examples of the present invention, the second bushing and the bracket body are integrally cast.

[0009] In some examples of the present invention, a groove portion is provided on an outer peripheral wall of the second bushing, and the groove portion cooperates with the bracket body in an axial upper limit position of the second bushing.

[0010] In some examples of the present invention, the first bushing and the second bushing are cold-pressed interference fit.

[0011] In some examples of the present invention, the inner circumferential wall of the second bushing is provided with guide portions at both ends in the axial direction, and the guide portions are in guiding cooperation with the first bushing.

[0012] In some examples of the present invention, the second bushing is made of carbon steel No. 45, and the first bushing is made of carburized steel 20Cr.

[0013] In some examples of the present invention, the frame mounting portion includes a mounting plate and a mounting seat, the mounting plate extends in the up and down directions, the mounting seat extends in the horizontal direction and is connected between the mounting plate and the leaf spring connecting portion, a first mounting hole is provided on the mounting plate, and a second mounting hole is provided on the mounting seat, the first mounting hole is suitable for connecting to the side of the frame, and the second mounting hole is suitable for connecting to the bottom surface of the frame.

[0014] In some examples of the present invention, there are multiple first mounting holes, and the multiple first mounting holes are arranged at intervals and the center lines form a triangle; and / or there are multiple second mounting holes, and the multiple second mounting holes are arranged at intervals in the horizontal direction.

[0015] In some examples of the present invention, a reinforcing rib is provided between any two adjacent first mounting holes, and / or a reinforcing rib is provided between the mounting plate and the mounting seat.

[0016] A vehicle according to an embodiment of the present invention includes: the leaf spring bracket described above.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 is a schematic diagram of a leaf spring bracket according to an embodiment of the present invention; Figure 2 is a schematic diagram of a leaf spring bracket from another perspective according to an embodiment of the present invention; Figure 3 is a partial cross-sectional view of a leaf spring bracket according to an embodiment of the present invention; Figure 4 is a schematic diagram of a bracket body according to an embodiment of the present invention; Figure 5 is a schematic diagram of a first bushing according to an embodiment of the present invention; Figure 6 is a schematic diagram of a second bushing according to an embodiment of the present invention.

[0019] Reference numerals: 100, leaf spring bracket; 10. Bracket body; 11. Frame mounting portion; 111. Mounting plate; 1111. First mounting hole; 1112. Reinforcement rib; 112. Mounting seat; 1121. Second mounting hole; 12. Leaf spring connection portion; 121. Through hole; 122. Weight reduction groove; 20. First bushing; 30. Second bushing; 31. Groove portion; 32. Guide portion. DETAILED DESCRIPTION

[0020] The embodiments of the present invention will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention will be described in detail below.

[0021] Reference below Figures 1-6 The leaf spring bracket 100 according to an embodiment of the present invention is described, and the leaf spring bracket 100 can be applied to a vehicle, wherein the vehicle includes but is not limited to a commercial vehicle.

[0022] Combine Figures 1-6 As shown, the leaf spring bracket 100 according to the present invention may mainly include: a bracket body 10 , a first bushing 20 and a second bushing 30 .

[0023] Among them, the bracket body 10 is an aluminum alloy part and includes a frame mounting part 11 and a leaf spring connecting part 12. The frame mounting part 11 is suitable for connecting to the frame. The leaf spring connecting part 12 is connected to the bottom of the frame mounting part 11. The leaf spring connecting part 12 is provided with a through hole 121. The first bushing 20 is provided in the through hole 121. The first bushing 20 is suitable for connecting to the leaf spring system. The second bushing 30 is a steel sleeve and is provided between the bracket body 10 and the first bushing 20.

[0024] Specifically, the leaf spring bracket 100 is used to connect between the vehicle frame and the leaf spring system, specifically, between the frame and the lifting lugs of the leaf spring system. The bracket body 10 includes a frame mounting portion 11 and a leaf spring connecting portion 12. The leaf spring connecting portion 12 is connected below the frame mounting portion 11 and is provided with a through hole 121. This allows the frame mounting portion 11 to be connected to the vehicle frame, and bolts can be passed through the through hole 121 of the leaf spring connecting portion 12 to connect to the lifting lugs. Thus, the leaf spring system can be installed on the vehicle frame through the bracket body 10.

[0025] Furthermore, by setting the first bushing 20, the first bushing 20 is set in the through hole 121, so that the ear can pass through the first bushing 20 and rotate with the first bushing 20, thereby improving the smoothness of the rotation of the ear and reducing the wear of the ear and the leaf spring bracket 100.

[0026] Unlike the prior art in which the bracket body is configured as a cast iron part, the present application configures the bracket body 10 as an aluminum alloy part, which can effectively reduce the weight of the bracket body 10 and improve the lightweightness of the bracket body 10 and even the leaf spring bracket 100. The material of the bracket body 10 can be aluminum alloy A356.2.

[0027] Furthermore, considering that the lifting eye rotates during operation, higher strength requirements are placed on the structure near the through-hole 121. By providing the second bushing 30 between the bracket body 10 and the first bushing 20, the second bushing 30 can enhance the structural strength near the through-hole 121, thereby optimizing the structural design of the leaf spring bracket 100 and improving the structural strength of the leaf spring bracket 100 while increasing its lightweight.

[0028] It should be noted that the thickness of the second bushing 30 in the radial direction needs to be ensured to ensure the protection and reinforcement effect of the second bushing 30 on the bracket body 10 .

[0029] Therefore, by setting the bracket body 10 as an aluminum alloy part and making the second bushing 30 a steel sleeve and arranged between the bracket body 10 and the first bushing 20, the structural strength near the through hole 121 can be enhanced by the second bushing 30 while reducing the weight, thereby optimizing the structural design of the leaf spring bracket 100, not only improving the lightweight degree of the leaf spring bracket 100, but also improving the structural strength of the leaf spring bracket 100.

[0030] Furthermore, the second bushing 30 and the bracket body 10 are integrally cast. Specifically, considering that the second bushing 30 and the bracket body 10 are structural components made of different materials, after the second bushing 30 is processed and manufactured, the second bushing 30 can be placed in a mold, and then liquid aluminum alloy is cast into the mold. After cooling and solidification, the second bushing 30 and the bracket body 10 are integrally cast. This allows the second bushing 30 to be connected to the bracket body 10, and the second bushing 30 is embedded in the bracket body 10, thereby not only simplifying the assembly between the second bushing 30 and the bracket body 10, but also improving the connection reliability between the second bushing 30 and the bracket body 10, and thus enhancing the structural reliability of the leaf spring bracket 100.

[0031] Combine Figure 3 、 Figure 4 and Figure 6 As shown, the outer peripheral wall of the second bushing 30 is provided with a groove portion 31 , and the groove portion 31 cooperates with the bracket body 10 in the axial upper limit position of the second bushing 30 .

[0032] Specifically, by providing a groove portion 31 on the outer peripheral wall of the second bushing 30, when the second bushing 30 and the bracket body 10 are cast as one piece, at least a portion of the bracket body 10 can enter the groove portion 31 and be connected to the groove portion 31. On the one hand, the groove portion 31 and the bracket body 10 can cooperate with the axial upper limit of the second bushing 30, which can limit the relative displacement between the second bushing 30 and the bracket body 10. On the other hand, the contact area between the second bushing 30 and the bracket body 10 can be increased, and the connection reliability between the second bushing 30 and the bracket body 10 can be improved, thereby avoiding displacement between the second bushing 30 and the bracket body 10 when assembling the first bushing 20, and improving the structural reliability of the leaf spring bracket 100.

[0033] The groove portion 31 of the outer peripheral wall of the second bushing 30 can be formed by machining. Furthermore, there can be multiple groove portions 31, with the multiple groove portions 31 spaced apart in the axial direction, or multiple groove portions 31 spaced apart in the axial direction can be provided within one groove portion 31, which is not specifically limited here.

[0034] In some embodiments of the present invention, the second bushing 30 is made of No. 45 carbon steel. Specifically, No. 45 carbon steel not only has high strength and hardness, but also has good processability, is readily available, and is relatively inexpensive. Using No. 45 carbon steel for the second bushing 30 not only ensures the structural strength of the second bushing 30 and its enhanced strength for the bracket body 10, but also facilitates its manufacture, thereby reducing its production cost.

[0035] In some embodiments of the present invention, the first bushing 20 is made of carburized steel 20Cr. Specifically, carburized steel 20Cr has excellent wear resistance. By setting the first bushing 20 to be made of carburized steel 20Cr, the smoothness of the rotation of the lifting eye can be further improved, and the wear of the lifting eye and the leaf spring bracket 100 can be reduced.

[0036] Furthermore, the first bushing 20 and the second bushing 30 are cold-pressed to form an interference fit. Specifically, during assembly, the first bushing 20 can be cooled with a coolant to shrink its size, and then installed into the second bushing 30 to achieve a mating position. This interference fit between the first bushing 20 and the second bushing 30 allows the first bushing 20 to be installed properly. This not only simplifies the structure of the leaf spring bracket 100 and ensures its structural reliability, but also reduces assembly time and prevents oxidation.

[0037] Combine Figure 6As shown, the inner circumferential wall of the second bushing 30 is provided with guide portions 32 at both ends in the axial direction, and the guide portions 32 are guided and matched with the first bushing 20. Specifically, considering that the first bushing 20 needs to be press-fitted into the interior of the second bushing 30, by providing guide portions 32 at both ends in the axial direction of the inner circumferential wall of the second bushing 30, during assembly, the guide portions 32 can be guided and matched with the end portions of the first bushing 20, and the first bushing 20 can gradually enter the interior of the second bushing 30 along the guide portions 32. The guide portions 32 can play a guiding role, thereby improving the speed and accuracy of assembly and improving assembly efficiency. Among them, the guide portion 32 can be a guiding inclined surface or a guiding curved surface, which is not specifically limited here.

[0038] It should be noted that since the inner circumferential wall of the second bushing 30 is provided with guide portions 32 at both axial ends, the first bushing 20 can be installed from any axial end of the second bushing 30 without limiting the assembly direction, thereby further improving assembly efficiency.

[0039] Combine Figure 1 and Figure 4 As shown, the leaf spring connecting portion 12 is further provided with a weight-reducing groove 122, which is spaced apart from the through hole 121. This can further reduce the weight of the leaf spring connecting portion 12, thereby improving the lightweightness of the leaf spring connecting portion 12 and the leaf spring bracket 100. Optionally, a plurality of weight-reducing grooves 122 can be provided, which is not specifically limited here.

[0040] Combine Figure 1 and Figure 4 As shown, the frame mounting portion 11 may include a mounting plate 111 and a mounting seat 112. The mounting plate 111 extends in the up and down directions, and the mounting seat 112 extends in the horizontal direction and is connected between the mounting plate 111 and the leaf spring connecting portion 12. A first mounting hole 1111 is provided on the mounting plate 111, and a second mounting hole 1121 is provided on the mounting seat 112. The first mounting hole 1111 is suitable for connecting to the side of the frame, and the second mounting hole 1121 is suitable for connecting to the bottom surface of the frame.

[0041] Specifically, by extending the mounting plate 111 in the vertical direction and extending the mounting seat 112 in the horizontal direction and connecting it between the mounting plate 111 and the leaf spring connecting portion 12, the frame mounting portion 11 can be adapted to the structure of the frame, the mounting plate 111 is connected to the side of the frame, and the mounting seat 112 is connected to the bottom surface of the frame, thereby optimizing the distribution of the connecting force between the frame mounting portion 11 and the frame and improving the connection reliability between the frame mounting portion 11 and the frame.

[0042] Furthermore, a first mounting hole 1111 is provided on the mounting plate 111, and a second mounting hole 1121 is provided on the mounting seat 112. In this way, it is only necessary to pass the first fastener through the first mounting hole 1111 and be fixedly connected to the side surface of the frame, and pass the second fastener through the second mounting hole 1121 and be fixedly connected to the bottom surface of the frame. In this way, the connection between the mounting plate 111 and the side surface of the frame, and the connection between the mounting seat 112 and the bottom surface of the frame can be achieved, thereby making the connection between the frame mounting portion 11 and the frame simpler and more reliable.

[0043] Combine Figure 1 and Figure 4 As shown, there are multiple first mounting holes 1111, and the multiple first mounting holes 1111 are arranged at intervals and the center lines form a triangle. In this way, the layout of the multiple first mounting holes 1111 can be optimized, and the distribution of the connection force between the mounting plate 111 and the side of the frame can be more uniform and reasonable, thereby improving the connection reliability between the mounting plate 111 and the side of the frame.

[0044] Combine Figure 1 and Figure 4 As shown, there are multiple second mounting holes 1121, and the multiple second mounting holes 1121 are arranged at intervals in the horizontal direction. This can optimize the layout of the multiple second mounting holes 1121, make the distribution of the connection force between the mounting seat 112 and the bottom surface of the frame more uniform and reasonable, and improve the connection reliability between the mounting seat 112 and the bottom surface of the frame.

[0045] In a specific embodiment of the present invention, Figure 4 As shown, there are five first mounting holes 1111, three of which are spaced apart in the vertical direction, with the remaining two first mounting holes 1111 located horizontally on either side of the lowest of the three first mounting holes 1111. Furthermore, there are two second mounting holes 1121, each located near the horizontal ends of the mounting base 112. This further optimizes the number and layout of the first mounting holes 1111, as well as the number and layout of the second mounting holes 1121, improving the connection reliability between the frame mounting portion 11 and the frame.

[0046] Combine Figure 4 As shown, a reinforcing rib 1112 is provided between any two adjacent first mounting holes 1111 .

[0047] Specifically, considering that during the assembly process, the fasteners pass through the first mounting holes 1111 and are connected and fixed to the side of the frame, the strength requirements for the structure near the first mounting holes 1111 on the mounting plate 111 are relatively high. By providing reinforcing ribs 1112 between any two adjacent first mounting holes 1111, the strength of the structure near the first mounting holes 1111 on the mounting plate 111 can be improved, thereby improving the structural reliability of the mounting plate 111 and even the leaf spring bracket 100, and ensuring the reliability of the connection between the leaf spring bracket 100 and the side of the frame.

[0048] Combine Figure 4 As shown, a reinforcing rib 1112 is provided between the mounting plate 111 and the mounting seat 112 .

[0049] Specifically, considering that the mounting plate 111 is connected to the mounting seat 112, the structural strength of the connection position between the mounting plate 111 and the mounting seat 112 will affect the overall structural reliability of the frame mounting portion 11. By extending the reinforcing rib 1112 to the mounting seat 112, a reinforcing rib 1112 is provided between the mounting plate 111 and the mounting seat 112. This can improve the structural strength of the connection position between the mounting plate 111 and the mounting seat 112, and can disperse the force on the mounting plate 111 to transfer to the mounting seat 112, thereby improving the structural reliability of the frame mounting portion 11 and even the leaf spring bracket 100.

[0050] The vehicle according to the present invention may primarily include the leaf spring bracket 100 described above. Specifically, the leaf spring bracket 100 of the present application is lighter and less expensive while maintaining structural strength. Application of the leaf spring bracket 100 to a vehicle can improve the vehicle's lightweighting and reduce production costs, thereby enhancing the vehicle's product competitiveness and improving the user experience.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A leaf spring bracket, characterized in that: include: A bracket body (10), the bracket body (10) is an aluminum alloy part and includes a frame mounting portion (11) and a leaf spring connecting portion (12), the frame mounting portion (11) is suitable for connecting to a vehicle frame, the leaf spring connecting portion (12) is connected below the frame mounting portion (11), and the leaf spring connecting portion (12) is provided with a through hole (121); A first bushing (20), the first bushing (20) being arranged in the through hole (121), the first bushing (20) being suitable for connecting to a leaf spring system; A second bushing (30) is a steel bushing and is arranged between the bracket body (10) and the first bushing (20).

2. The leaf spring bracket according to claim 1, characterized in that: The second bushing (30) and the bracket body (10) are integrally cast.

3. The leaf spring bracket according to claim 2, characterized in that: The outer peripheral wall of the second bushing (30) is provided with a groove portion (31), and the groove portion (31) cooperates with the bracket body (10) at the axial upper limit position of the second bushing (30).

4. The leaf spring bracket according to claim 1, characterized in that: The first bushing (20) and the second bushing (30) are cold-pressed and interference-fitted.

5. The leaf spring bracket according to claim 4, characterized in that: The inner peripheral wall of the second bushing (30) is provided with guide portions (32) at both ends in the axial direction, and the guide portions (32) are in guiding cooperation with the first bushing (20).

6. The leaf spring bracket according to claim 1, characterized in that: The material of the second bushing (30) is carbon steel No. 45, and the material of the first bushing (20) is carburized steel 20Cr.

7. The leaf spring bracket according to claim 1, characterized in that: The frame mounting portion (11) comprises a mounting plate (111) and a mounting seat (112), wherein the mounting plate (111) is extended in the vertical direction, and the mounting seat (112) is extended in the horizontal direction and connected between the mounting plate (111) and the leaf spring connecting portion (12), wherein a first mounting hole (1111) is provided on the mounting plate (111), and a second mounting hole (1121) is provided on the mounting seat (112), wherein the first mounting hole (1111) is suitable for connecting to a side surface of the frame, and the second mounting hole (1121) is suitable for connecting to a bottom surface of the frame.

8. The leaf spring bracket according to claim 7, characterized in that: There are a plurality of the first mounting holes (1111), the plurality of the first mounting holes (1111) are arranged at intervals and a center line connecting the holes forms a triangle; and / or There are a plurality of second mounting holes (1121), and the plurality of second mounting holes (1121) are arranged at intervals in the horizontal direction.

9. The leaf spring bracket according to claim 8, characterized in that: A reinforcing rib (1112) is provided between any two adjacent first mounting holes (1111), and / or a reinforcing rib (1112) is provided between the mounting plate (111) and the mounting seat (112).

10. A vehicle, characterized in that: include: The leaf spring bracket (100) according to any one of claims 1 to 9.

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