A rear leaf spring mounting bracket and mounting structure thereof

Abstract

The utility model relates to a rear plate spring mounting support and mounting structure thereof, and the support comprises a lifting lug, outer plates and lower mounting plates are connected in parallel and at intervals on both ends of the lifting lug along the axial direction, the lower mounting plate comprises a first connecting plate, the first connecting plate is parallel to the outer plate, a through hole is vertically provided in the free end of the first connecting plate, the first connecting plate extends obliquely upwards and forms a second connecting plate in a direction perpendicular to the first connecting plate and away from the outer plate, and the side of the second connecting plate away from the lifting lug forms a connecting surface. The utility model designs the lower mounting plate into the first connecting plate and the second connecting plate which are perpendicular to each other, the second connecting plate further forms the connecting surface, provides the working surface which is in contact and fixed for subsequent assembly with the frame girder, ensures the connecting strength between the rear plate spring mounting support and the frame, has simple structure, lower cost, small weight, and is convenient to assemble, and the weight of the frame is not excessively increased after assembly.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to a rear leaf spring mounting bracket and its mounting structure. Background Technology

[0002] The leaf spring mounting bracket is a crucial component connecting the vehicle frame and suspension. The vehicle's weight is transferred to the suspension through it, while driving force is transmitted to the frame via the suspension and the bracket, thus achieving traction for the entire vehicle. For the rear leaf spring mounting bracket, the design must ensure the structural strength of the bracket itself and the connection strength between the bracket and the frame to meet the usage and testing requirements under various normal operating conditions. Ensuring lightweight design while meeting strength requirements is a challenge. Existing technologies, such as CN203844567U, disclose an assembly of a rear leaf spring hanger bracket with a rear vehicle body mounting bracket. To optimize the overall vehicle layout, the rear leaf spring hanger bracket and the rear vehicle body mounting bracket are welded together, ensuring strength, but this increases the vehicle's weight to some extent. Therefore, it is necessary to ensure the reliability of the installation between the mounting bracket and the frame without excessively increasing the vehicle's weight. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a rear leaf spring mounting bracket and its mounting structure, so as to avoid the problems of the current rear leaf spring mounting bracket having a complex structure and large weight, and the overall weight being too heavy in order to ensure the connection strength between the rear leaf spring mounting bracket and the vehicle frame beam.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A rear leaf spring mounting bracket includes a lug, with an outer plate and a lower mounting plate connected parallel to each other along its axial direction at both ends of the lug; a through hole is vertically opened at the free end of the outer plate, and one end of the lug passes through the through hole and is fixedly connected to the outer plate; the lower mounting plate includes a first connecting plate, which is parallel to the outer plate, and a through hole is vertically opened at the free end of the first connecting plate so that the other end of the lug passes through the through hole and is fixedly connected to the first connecting plate; the first connecting plate extends obliquely upward and extends in a direction perpendicular to the first connecting plate and away from the outer plate to form a second connecting plate, and the side of the second connecting plate away from the lug is formed as a connecting surface for connecting to the vehicle frame.

[0005] To further improve the above technical solution, an upper mounting plate is vertically connected to the side of the outer plate near the first connecting plate. The upper mounting plate extends along the axis of the lifting lug and is fixedly connected to the first connecting plate. The upper edge of the upper mounting plate is flush with the connecting surface.

[0006] Furthermore, a reinforcing plate is connected between the first connecting plate and the second connecting plate. The reinforcing plate is in the shape of a right triangle. One right-angled side of the reinforcing plate is fixedly connected to the side of the first connecting plate away from the outer plate, and the other right-angled side is fixedly connected to the side of the second connecting plate near the lifting lug.

[0007] Furthermore, the end of the outer plate away from the lifting lug extends obliquely upward and is higher than the second connecting plate, and a first through hole is provided through the end of the outer plate away from the lifting lug.

[0008] Furthermore, the end where the outer panel is connected to the lug and the end where the first through hole is located have a certain angle, and the inner corner of the angle is rounded with an inner radius of R14-R16.

[0009] Furthermore, the upper edge of the first connecting plate, parallel to and opposite to the outer plate, also has a corresponding inner rounded corner.

[0010] Furthermore, a transition plate is fixedly connected to the connecting surface. The transition plate includes a horizontal segment and a vertical segment that are perpendicular to each other. The horizontal segment is fixedly connected to the connecting surface, one end of the horizontal segment is fixedly connected to the outer plate, and the other end of the horizontal segment extends vertically upward to form the vertical segment. A second through hole is provided through the middle of the vertical segment. The second through hole is the same size as the first through hole, and the line connecting the centers of the two holes is parallel to the axis of the lifting lug. Several riveting holes are also provided through the vertical segment.

[0011] This utility model also relates to an installation structure for a rear leaf spring mounting bracket, including a main beam and a steel pipe beam that are perpendicular to each other; it also includes a rear leaf spring mounting bracket as described above, wherein any side of the main beam is fixedly connected to a side of the vertical section away from the outer plate, and the lower surface of the main beam is fixedly connected to the connecting surface; a third through hole is provided through the side of the main beam, and the third through hole is adapted to the steel pipe beam. The steel pipe beam passes through the first through hole, the second through hole, and the third through hole. After passing through the first through hole, the steel pipe beam is fixedly connected to the outer plate. After passing through the second through hole and the third through hole, the steel pipe beam is fixedly connected to the vertical section and the main beam.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention relates to a rear leaf spring mounting bracket, which designs the lower mounting plate as a first connecting plate and a second connecting plate that are perpendicular to each other. The upper surface of the second connecting plate serves as a connecting surface for connecting with the vehicle frame, providing a working surface for subsequent assembly with the vehicle frame beam to contact and fix it, thus ensuring the connection strength between the rear leaf spring mounting bracket and the vehicle frame. The entire rear leaf spring mounting bracket has a simple structure, low cost, light weight, and is easy to assemble, and will not excessively increase the weight of the vehicle frame after assembly.

[0013] 2. The present invention provides an installation structure for a rear leaf spring mounting bracket. The rear leaf spring mounting bracket and the main beam or steel pipe beam are connected by a designed transition plate to increase the connection area for fixed connection. The structure and assembly process are simple, the cost is low, and the connection strength is reliable. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a rear leaf spring mounting bracket according to an embodiment; Figure 2 for Figure 1 A structural schematic diagram of the rear leaf spring mounting bracket from another perspective; Figure 3 This is a schematic diagram of the mounting structure of a rear leaf spring mounting bracket according to an embodiment; Among them, there are: lifting lug 1, outer plate 2, first through hole 21, lower mounting plate 3, first connecting plate 31, second connecting plate 32, connecting surface 321, upper mounting plate 4, reinforcing plate 5, transition plate 6, horizontal section 61, vertical section 62, second through hole 63, riveting hole 64, main beam 7, and steel pipe beam 8. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0018] Please see Figure 1 and Figure 2 A rear leaf spring mounting bracket according to a specific embodiment includes a lug 1. An outer plate 2 and a lower mounting plate 3 are connected parallel to each other at both ends of the lug 1 along its axial direction. A through hole is vertically opened at the free end of the outer plate 2. One end of the lug 1 passes through the through hole and is fixedly connected to the outer plate 2. The lower mounting plate 3 includes a first connecting plate 31, which is parallel to the outer plate 2. A through hole is vertically opened at the free end of the first connecting plate 31 so that the other end of the lug 1 passes through the through hole and is fixedly connected to the first connecting plate 31. The first connecting plate 31 extends obliquely upward and extends in a direction perpendicular to the first connecting plate 31 and away from the outer plate 2 to form a second connecting plate 32. The side of the second connecting plate 32 away from the lug 1 is a connecting surface 321, that is, the upper surface of the second connecting plate 32 is formed as a connecting surface 321 for connecting with the vehicle frame.

[0019] The rear leaf spring mounting bracket of this embodiment is designed with the lower mounting plate 3 as a first connecting plate 31 and a second connecting plate 32 that are perpendicular to each other. The upper surface of the second connecting plate 32 serves as a connecting surface 321 for connecting with the vehicle frame, providing a working surface for subsequent assembly with the vehicle frame beam to contact and fix it, thus ensuring the connection strength between the rear leaf spring mounting bracket and the vehicle frame. The entire rear leaf spring mounting bracket has a simple structure, low cost, light weight, and is easy to assemble. After assembly, it will not increase the weight of the vehicle too much.

[0020] In practice, the first connecting plate 31 and the second connecting plate 32 can be formed by bending a single piece of lower mounting plate 3 from the middle, i.e., a structure formed by integral bending.

[0021] Please continue reading Figure 1 and Figure 2 The outer plate 2 has an upper mounting plate 4 vertically connected to the side near the first connecting plate 31. The upper mounting plate 4 extends along the axis of the lifting lug and is fixedly connected to the first connecting plate 31. The upper edge of the upper mounting plate 4 is flush with the connecting surface 321.

[0022] This strengthens the connection between the outer panel 2 and the lower mounting plate 3.

[0023] Among them, a reinforcing plate 5 is connected between the first connecting plate 31 and the second connecting plate 32. The reinforcing plate 5 is a right triangle. One right-angled side of the reinforcing plate 5 is fixedly connected to the side of the first connecting plate 31 away from the outer plate 2, and the other right-angled side is fixedly connected to the side (lower surface) of the second connecting plate 32 near the lifting lug 1.

[0024] In this way, the triangular structure provides support for the second connecting plate 32, thereby improving the structural strength of the entire lower mounting plate 3.

[0025] When implementing, such as Figure 1 and Figure 2 As shown, there are two reinforcing plates 5, which are arranged in parallel and spaced between the first connecting plate 31 and the second connecting plate 32.

[0026] The outer plate 2 extends obliquely upward at one end away from the lug 1 and is higher than the second connecting plate 32. A first through hole 21 is provided at the other end of the outer plate 2 away from the lug 1.

[0027] In implementation, regarding the cutting of the outer panel 2, the end where the lifting lug 1 is connected and the end where the first through hole 21 is opened have a certain included angle. The inner corner of this included angle is rounded, preferably with an inner radius of R15, and the outer radius increases with the width of the panel. Correspondingly, the upper edge of the first connecting plate 31 also has an inner radius of R15 parallel to each other at the bending position near the second connecting plate 32, while the inner radius of the second connecting plate 32 at the bending position relative to the first connecting plate 31 is preferably R5. Through the design of multiple rounded corners, the stress during use is reduced.

[0028] The connecting surface 321 is also fixedly connected to a transition plate 6. The transition plate 6 includes a horizontal section 61 and a vertical section 62 that are perpendicularly connected to each other in an L-shape. The horizontal section 61 is attached to and fixedly connected to the upper surface of the connecting surface 321 through its lower surface. One end of the horizontal section 61 extends to be fixedly connected to the inner side of the outer plate 2. The transition plate 6 is also integrally bent. The other end of the horizontal section 61 extends vertically upward to form the vertical section 62, which is parallel to the outer plate 2. A second through hole 63 is provided through the middle of the vertical section 62. The second through hole 63 is the same size as the first through hole 21, and the line connecting their centers is parallel to the axis of the lifting lug 1. Several riveting holes 64 are also provided through the vertical section 62, which are arranged circumferentially at intervals outside the second through hole 63.

[0029] In this way, the transition plate 6 provides more mounting surfaces for the subsequent connection between the rear leaf spring mounting bracket and the vehicle frame beam, ensuring connection strength.

[0030] Please see Figure 3 This utility model also provides an installation structure for a rear leaf spring mounting bracket, including a main beam 7 and a steel pipe beam 8 that are perpendicular to each other; it also includes the aforementioned rear leaf spring mounting bracket, wherein the side of the main beam 7 is fixedly connected to the side of the vertical section 62 away from the outer plate 2, and the lower surface of the main beam 7 is fixedly connected to the connecting surface 321; a third through hole (not shown in the figure) is provided through this side of the main beam 7, and the third through hole is adapted to the steel pipe beam 8; the end of the steel pipe beam 8 passes through the first through hole 21, the second through hole 63 and the third through hole, and after passing through the first through hole 21, the steel pipe beam 8 is fixedly connected to the outer plate 2, and after passing through the second through hole 63 and the third through hole, the steel pipe beam 8 is fixedly connected to the vertical section 62 and the main beam 7. The main beam 7 also has holes corresponding to the plurality of riveting holes 64, and is riveted by passing through rivets.

[0031] In the installation structure of this embodiment, the rear leaf spring mounting bracket is connected to the main beam 7 and steel pipe beam 8 via a designed transition plate 6 to increase the connection area for fixed connection. The structure and assembly process are simple, the cost is low, the connection strength is reliable, and the overall weight increase is small. The fixed connections described in this text mostly employ welding. Furthermore, the thickness of the outer plate 2, lower mounting plate 33, upper mounting plate 4, and transition plate 66 is generally selected to be around four millimeters, depending on the vehicle model and load. The material is high-strength steel such as Q345B and Q460 (yield strength approximately 500MPa). Using this bracket's installation structure, actual measurements under various working conditions have shown that it meets the structural strength requirements. Taking the most severe stress conditions under vertical load and right turn conditions as examples, the measured maximum stresses are 439.3MPa and 460.1MPa, respectively, both less than the yield strength. Compared to the original model or some existing models, the corresponding data reached 491.8 MPa and 497.2 MPa, and even exceeded 500 MPa in actual tests, showing a significant improvement. Furthermore, the structure is simple, material usage is controlled, and the weight is lighter, effectively reducing weight by 0.3 kg to 1 kg. The improved structure achieves the design goal of meeting strength requirements while maintaining lightweight construction.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rear leaf spring mounting bracket, characterized in that: The device includes a lug, on which an outer plate and a lower mounting plate are connected at parallel intervals along their axial direction at both ends. A through hole is vertically opened at the free end of the outer plate, through which one end of the lug passes and is fixedly connected to the outer plate. The lower mounting plate includes a first connecting plate, which is parallel to the outer plate. A through hole is vertically opened at the free end of the first connecting plate so that the other end of the lug passes through the through hole and is fixedly connected to the first connecting plate. The first connecting plate extends obliquely upward and extends in a direction perpendicular to the first connecting plate and away from the outer plate to form a second connecting plate. The side of the second connecting plate away from the lug is formed as a connecting surface for connecting to the frame.

2. The rear leaf spring mounting bracket according to claim 1, characterized in that: An upper mounting plate is vertically connected to the side of the outer plate near the first connecting plate. The upper mounting plate extends along the axis of the lifting lug and is fixedly connected to the first connecting plate. The upper edge of the upper mounting plate is flush with the connecting surface.

3. The rear leaf spring mounting bracket according to claim 1, characterized in that: A reinforcing plate is also connected between the first connecting plate and the second connecting plate. The reinforcing plate is a right-angled triangle. One right-angled side of the reinforcing plate is fixedly connected to the side of the first connecting plate away from the outer plate, and the other right-angled side is fixedly connected to the side of the second connecting plate near the lifting lug.

4. The rear leaf spring mounting bracket according to claim 1, characterized in that: The end of the outer plate away from the lifting lug extends obliquely upward and is higher than the second connecting plate. A first through hole is provided through the end of the outer plate away from the lifting lug.

5. The rear leaf spring mounting bracket according to claim 4, characterized in that: The end where the outer panel is connected to the lifting lug and the end where the first through hole is located have a certain angle. The inner corner of this angle is rounded with an inner radius of R14-R16.

6. The rear leaf spring mounting bracket according to claim 5, characterized in that: The upper edge of the first connecting plate, parallel to the outer plate, also has a corresponding inner rounded corner.

7. A rear leaf spring mounting bracket according to any one of claims 4-6, characterized in that: A transition plate is also fixedly connected to the connecting surface. The transition plate includes a horizontal section and a vertical section that are perpendicular to each other. The horizontal section is fixedly connected to the connecting surface. One end of the horizontal section is fixedly connected to the outer plate. The other end of the horizontal section extends vertically upward to form the vertical section. A second through hole is provided through the middle of the vertical section. The second through hole is the same size as the first through hole, and the line connecting the centers of the two holes is parallel to the axis of the lifting lug. Several riveting holes are also provided through the vertical section.

8. A mounting structure for a rear leaf spring mounting bracket, comprising mutually perpendicular main beams and steel pipe beams; characterized in that: It also includes a rear leaf spring mounting bracket as described in claim 7, wherein any side of the main beam is fixedly connected to the side of the vertical section away from the outer plate, and the lower surface of the main beam is fixedly connected to the connecting surface; a third through hole is provided through the side of the main beam, and the third through hole is adapted to the steel pipe beam. The steel pipe beam passes through the first through hole, the second through hole, and the third through hole. After passing through the first through hole, the steel pipe beam is fixedly connected to the outer plate. After passing through the second through hole and the third through hole, the steel pipe beam is fixedly connected to the vertical section and the main beam.

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