C-shaped suspension arm mounting structure

Abstract

The invention relates to the technical field of passenger car suspension systems, in particular to a C-shaped suspension arm mounting structure which comprises a mounting seat assembly, a connecting plate assembly and an underframe beam. The chassis beam is fixedly installed on a passenger car chassis, and the installation base assembly is installed at the lower end of the chassis beam and fixed through the connecting plate assembly. And the C-shaped suspension arm is mounted on the mounting seat assembly through a bolt, so that the purpose of mounting and fixing the C-shaped suspension arm is achieved. The overall combination of the bilateral C-shaped suspension arm is considered, the mounting structure is optimized, the mounting seat assembly and the underframe beam are connected together by using a plurality of flat special-shaped connecting plates, and then the stress of the mounting seat assembly is partially dispersed upwards by using the upper cross beam and the middle cross beam, so that the structural safety is improved; and meanwhile, the reliable design of a small space structure is realized.

Description

Technical Field

[0001] The invention relates to the field of passenger car suspension systems, and in particular to a C-type suspension arm mounting structure. Background Art

[0002] There are many different types of traditional suspension arms, but the C-type suspension arm, with its unique C-section design, provides excellent strength and rigidity while maintaining a light weight, which is beneficial to improving the vehicle's fuel economy and handling response. The C-type suspension arm is usually installed on the vehicle's chassis or subframe through complex connection mechanisms and fixtures to ensure stable suspension performance under various driving conditions.

[0003] However, there are some challenges in the design of the installation structure of the C-type suspension arm. First, how to ensure a firm connection between the suspension arm and the chassis or subframe to prevent loosening or breakage at high speeds or in harsh road conditions is an issue that designers need to focus on. Secondly, the installation position and direction of the suspension arm need to be precisely controlled to ensure that the wheels can maintain the correct geometric relationship during the bouncing process, thereby maintaining the vehicle's handling stability and the accuracy of the driving trajectory. In particular, the C-shaped beam occupies a large amount of space, and how to arrange the lower brake air chamber and automatic clearance adjustment arm on the axle body has become a design difficulty.

[0004] In summary, the design and manufacturing of the C-type suspension arm installation structure need to comprehensively consider multiple aspects such as strength, rigidity, precision and intelligence. With the continuous development of the automotive industry and technological progress, the industry will continue to explore and improve the installation structure of the C-type suspension arm to enhance the overall performance and safety of the vehicle. Summary of the invention

[0005] The purpose of the present invention is to provide a C-type suspension arm mounting structure, aiming to overcome the defects of the prior art and solve the problem of stress concentration caused by large occupied space and unreasonable structure.

[0006] To this end, the present invention proposes a C-type suspension arm mounting structure, including a mounting seat assembly, a connecting plate assembly and a base frame beam; the base frame beam is fixedly mounted on the bus chassis, the mounting seat assembly is mounted on the lower end of the base frame beam and fixed through the connecting plate assembly; and the C-type suspension arm is mounted on the mounting seat assembly through bolts, thereby achieving the purpose of installing and fixing the C-type suspension arm.

[0007] As a preferred technical solution of the present application, the mounting seat assembly includes a front combined mounting seat, a rear combined mounting seat, a left mounting seat and a right mounting seat, and the four are respectively fixedly mounted on the lower part of the base frame beam.

[0008] As a preferred technical solution of the present application, the front combined mounting seat and the rear combined mounting seat are both arranged and installed horizontally, and a concave groove is set in the middle position of the left and right ends, and a plurality of threaded holes are set on the left and right end surfaces for connecting with the spherical hinge of the C-type suspension arm and providing movement space.

[0009] As a preferred technical solution of the present application, the left mounting seat is installed in a vertical arrangement, with two concave grooves in the middle and two threaded holes on the side. The left mounting seat and the right mounting seat are left-right symmetrical parts, which are used to install the steering connecting rod triangular arms of the left and right C-type suspension arms and provide movement space.

[0010] As a preferred technical solution of the present application, the base frame beam is composed of a number of rectangular tubes connected together, and is mainly divided into left and right longitudinal beams, an upper cross beam and a support upper longitudinal beam; the support upper longitudinal beam is connected to the left and right longitudinal beams through the upper cross beam.

[0011] As a preferred technical solution of the present application, a pair of upper cross beams are connected to the front and rear ends of the upper longitudinal beam of the support, and the two ends of the upper cross beam are respectively welded to the left and right longitudinal beams.

[0012] As a preferred technical solution of the present application, the base frame beam also includes a middle cross beam, and the upper longitudinal beam of the support is also connected to the left and right longitudinal beams through the middle cross beam.

[0013] As a preferred technical solution of the present application, the connecting plate assembly includes connecting plate 1, connecting plate 2 and connecting plate 3; the connecting plate 1 is a rectangular structure, and the outer end surfaces of the front combined mounting seat and the rear combined mounting seat are respectively connected to a piece of the connecting plate 1, and the upper end of the connecting plate 1 is welded to the upper longitudinal beam of the support.

[0014] As a preferred technical solution of the present application, the connecting plate 2 is an inverted trapezoidal structure, the inner end surfaces of the front combined mounting seat and the rear combined mounting seat are respectively connected to a piece of the connecting plate 2, and the upper end of the connecting plate 2 is welded to the longitudinal beam on the support.

[0015] As a preferred technical solution of the present application, the connecting plate three is a right-angled trapezoidal structure and is horizontally arranged between the front combination mounting seat and the left mounting seat or the front combination mounting seat and the right mounting seat. The bottom edge of the connecting plate three is connected to the left mounting seat or the right mounting seat, and the top edge of the connecting plate three is connected to the connecting plate two on the inner side of the front combination mounting seat.

[0016] The C-type suspension arm mounting structure provided by the present invention takes the overall combination of the bilateral C-type suspension arms into consideration, optimizes the mounting structure, uses a plurality of flat, special-shaped connecting plates to connect the mounting seat assembly to the base frame beam, and then uses an upper crossbeam and an intermediate crossbeam to disperse the force of the mounting seat assembly upward, thereby improving the structural safety; at the same time, it realizes the reliability design of the small space structure.

[0017] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 The structure diagram of the C-type suspension arm installation structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure diagram of the C-type suspension arm installation structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The structure diagram of the C-type suspension arm installation structure of the present invention is shown in FIG. Figure 3 ; Figure 4 It is a structural schematic diagram of the front combined mounting seat in the C-type suspension arm mounting structure of the present invention; Figure 5 It is a structural schematic diagram of the left mounting seat in the C-type suspension arm mounting structure of the present invention; Figure 6 The structure diagram of the C-type suspension arm installation structure and the C-type suspension arm of the present invention is shown in FIG. Figure 1 ; Figure 7 The structure diagram of the C-type suspension arm installation structure and the C-type suspension arm of the present invention is shown in FIG. Figure 2 ; Description of reference numerals: 1. Mounting seat assembly; 2. Connecting plate assembly; 3. Chassis beam; 4. C-type suspension arm; 11. Front combined mounting seat; 12. Right mounting seat; 13. Left mounting seat; 14. Rear combined mounting seat; 21. Connecting plate one; 22. Connecting plate two; 23. Connecting plate three; 31. Left and right longitudinal beams; 32. Middle cross beam; 33. Support upper longitudinal beam; 34. Upper cross beam; 41. Spherical hinge; 42. Steering connecting rod triangular arm; 111. Concave groove one; 112. Threaded hole one; 131. Concave groove two; 132. Threaded hole two. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] like Figure 1~Figure 5 As shown, the C-type suspension arm mounting structure of the present invention is composed of the following parts: a mounting seat assembly 1, a connecting plate assembly 2, and a base frame beam 3; the base frame beam 3 is fixedly mounted on the bus chassis, the mounting seat assembly 1 is mounted on the lower end of the base frame beam 3 and fixed by the connecting plate assembly 2; and the C-type suspension arm 4 is mounted on the mounting seat assembly 1 by bolts, thereby achieving the purpose of installing and fixing the C-type suspension arm.

[0021] Specifically, Figure 1 As shown, the mounting seat assembly 1 mainly includes: a front combined mounting seat 11, a rear combined mounting seat 14, a left mounting seat 13 and a right mounting seat 12; which are respectively fixedly mounted on the lower part of the base frame beam 3.

[0022] Among them, Figure 4 As shown, the front assembly mounting seat 11 is processed by integral forging, and the forging has the advantages of high strength and good toughness compared with the casting; the front assembly mounting seat 11 is arranged horizontally, and a concave groove 111 is arranged in the middle, and the concave groove 111 is the movement space of the ball hinge 41 of the C-type suspension arm; the front assembly mounting seat 11 has two front and rear threaded holes 112 on one side, and the threaded hole 112 is used to install the cross bar of the ball hinge (such as Figure 7 ).

[0023] The front assembly mounting seat 11 is a left-right symmetrical member with the same structure on both sides, and is used to mount the left and right C-type suspension arms 4. The integral structure can offset the thrusts.

[0024] like Figure 5 As shown, the left mounting seat 13 is also processed by integral forging. Compared with castings, forgings have the advantages of high strength and good toughness. The left mounting seat 13 is arranged vertically, and a concave groove 131 is arranged in the middle. The concave groove 131 is the activity space of the steering connecting rod triangular arm 42; the left mounting seat 13 is arranged with three threaded holes 132 on the upper and lower sides for mounting the steering connecting rod triangular arm 42 (such as Figure 6 , Figure 7 ).

[0025] The left mounting seat 13 and the right mounting seat 12 are symmetrical parts with the same structure on both sides, and are used to install the steering connecting rod triangular arms 42 in the left and right C-type suspension arms 4; the middle is connected to form an integral structure through a rectangular tube to offset the thrust.

[0026] like Figure 3As shown, the base frame beam 3 is composed of a number of rectangular tubes connected together, and is mainly divided into left and right longitudinal beams 31, an upper cross beam 34, a middle cross beam 32 and a support upper longitudinal beam 33; the lower plane of the support upper longitudinal beam 33 and the mounting seat assembly 1 are connected through the plate assembly 2 to form a whole, which disperses the force of the mounting seat assembly 1 to the upper part.

[0027] A pair of upper cross beams 34 are connected to the front and rear ends of the support upper longitudinal beam 33. At the same time, the two ends of the upper cross beam 34 are respectively welded to the left and right longitudinal beams 31, so that the force in the middle of the support upper longitudinal beam 33 is connected and dispersed to the left and right longitudinal beams 31; the support upper longitudinal beam 33 is also connected to the left and right longitudinal beams 31 through the middle cross beam 32, so that the force of the support upper longitudinal beam 33 is dispersed outward and front and back, thus forming a better force structure.

[0028] like Figure 2 As shown, the connecting plate assembly 2 is mainly used to connect and fix the mounting seat assembly 1 and the bottom frame beam 3. According to the structural position and spatial position, a flat plate with a special shape is adopted. Through the front and rear planes of the connecting plate, or the side thickness edge, the welding surface of the mounting seat assembly and the bottom frame beam can be greatly increased, the connection structure is increased, and the forces in multiple directions are dispersed.

[0029] The connecting plate assembly 2 includes a connecting plate 1 21, a connecting plate 22 and a connecting plate 3 23; the connecting plate 1 21 is a rectangular structure, and the outer end surfaces of the front combined mounting seat 11 and the rear combined mounting seat 14 are respectively connected to a connecting plate 1 21, and the upper end of the connecting plate 1 21 is welded to the upper longitudinal beam 33 of the support.

[0030] The connecting plate 22 is an inverted trapezoidal structure. The inner end surfaces of the front combined mounting seat 11 and the rear combined mounting seat 14 are respectively connected to a connecting plate 22, and the upper end of the connecting plate 22 is welded to the upper longitudinal beam 33 of the support; at the same time, the upper end of the connecting plate 22 is welded to the middle cross beam 32; thereby better transmitting the force of the front combined mounting seat 11 and the rear combined mounting seat 14 to the upper longitudinal beam 33 of the support.

[0031] The connecting plate three 23 is a right-angled trapezoidal structure and is horizontally arranged between the front combined mounting seat 11 and the left mounting seat 13 or the front combined mounting seat 11 and the right mounting seat 12. The bottom edge of the connecting plate three 23 is connected to the left mounting seat 13 or the right mounting seat 12, and the top edge of the connecting plate three 23 is connected to the connecting plate two 22 on the inner side of the front combined mounting seat 11; it is similar to a reinforcing rib and serves the purpose of strengthening and fixing.

[0032] The working principle and working process of the C-type suspension arm installation structure of the present invention are briefly described below.

[0033] The mounting seat assembly 1 of the C-type suspension arm mounting structure provided by the present invention is processed by an integral forging, which has the advantages of high strength and good toughness compared with castings; the front combined mounting seat 11 is a left-right symmetrical part with the same structure on both sides, and is used to install the left and right C-type suspension arms 4. The integral structure can offset the thrust. The left mounting seat 13 and the right mounting seat 12 are left-right symmetrical parts with the same structure on both sides, and are used to install the steering connecting rod triangular arm 42 in the left and right C-type suspension arms 4; the middle is connected to form an integral structure through a rectangular tube to offset the thrust.

[0034] The lower plane of the upper longitudinal beam 33 of the support and the mounting seat assembly 1 are integrated through the connecting plate assembly 2, which disperses the force of the mounting seat assembly 1 upward. The upper longitudinal beam 33 of the support is also connected to the left and right longitudinal beams 31 through the middle cross beam 32, which disperses the force of the upper longitudinal beam 33 of the support outward and forward and backward, forming a better force structure.

[0035] The connecting plate assembly 2 is mainly used to connect and fix the mounting seat assembly 1 and the bottom frame beam 3. According to the structural position and spatial position, a flat plate with a special shape is adopted. Through the front and rear planes of the connecting plate, or the side thickness edge, the welding surface of the mounting seat assembly and the bottom frame beam can be greatly increased, the connection structure can be increased, and the forces in multiple directions can be dispersed.

[0036] The C-type suspension arm mounting structure of the present invention takes the overall combination of the bilateral C-type suspension arms into consideration, optimizes the mounting structure, uses a plurality of flat, special-shaped connecting plates to connect the mounting seat assembly to the base frame beam, and then uses an upper crossbeam and an intermediate crossbeam to disperse the force of the mounting seat assembly upward, thereby improving the structural safety; at the same time, it realizes the reliability design of the small space structure.

[0037] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A C-type suspension arm mounting structure, characterized in that: The invention comprises a mounting seat assembly (1), a connecting plate assembly (2) and a chassis beam (3); the chassis beam (3) is fixedly mounted on a bus chassis, the mounting seat assembly (1) is mounted on the lower end of the chassis beam (3) and is fixed via the connecting plate assembly (2); and a C-type suspension arm (4) is mounted on the mounting seat assembly (1) via bolts, thereby achieving the purpose of mounting and fixing the C-type suspension arm.

2. The C-type suspension arm mounting structure according to claim 1, characterized in that: The mounting seat assembly (1) comprises a front combined mounting seat (11), a rear combined mounting seat (14), a left mounting seat (13) and a right mounting seat (12), the four being respectively fixedly mounted on the lower part of the bottom frame beam (3).

3. The C-type suspension arm mounting structure according to claim 2, characterized in that: The front assembly mounting seat (11) and the rear assembly mounting seat (14) are both arranged and installed horizontally, and a concave groove (111) is provided in the middle position of the left and right ends thereof, and a plurality of threaded holes (112) are provided on the left and right end surfaces thereof for connecting with the spherical hinge (41) of the C-shaped suspension arm (4) and providing movement space.

4. The C-type suspension arm mounting structure according to claim 2, characterized in that: The left mounting seat (13) is arranged vertically, with two concave grooves (131) arranged in the middle and two threaded holes (132) arranged on the side. The left mounting seat (13) and the right mounting seat (12) are left-right symmetrical parts, and are used to mount the steering connecting rod triangular arms (42) of the left and right C-type suspension arms (4) and provide movement space.

5. The C-type suspension arm mounting structure according to claim 2, characterized in that: The chassis beam (3) is formed by connecting a plurality of rectangular tubes, and is mainly divided into left and right longitudinal beams (31), an upper cross beam (34), and a support upper longitudinal beam (33); the support upper longitudinal beam (33) and the left and right longitudinal beams (31) are connected via the upper cross beam (34).

6. The C-type suspension arm mounting structure according to claim 5, characterized in that: A pair of upper cross beams (34) are connected to the front and rear ends of the support upper longitudinal beam (33), and the two ends of the upper cross beam (34) are respectively welded to the left and right longitudinal beams (31).

7. The C-type suspension arm mounting structure according to claim 5, characterized in that: The chassis beam (3) further comprises a middle cross beam (32), and the support upper longitudinal beam (33) is further connected to the left and right longitudinal beams (31) via the middle cross beam (32).

8. The C-type suspension arm mounting structure according to claim 5, characterized in that: The connecting plate assembly (2) comprises a connecting plate 1 (21), a connecting plate 2 (22) and a connecting plate 3 (23); the connecting plate 1 (21) is a rectangular structure, the outer end surfaces of the front combined mounting seat (11) and the rear combined mounting seat (14) are respectively connected to a connecting plate 1 (21), and the upper end of the connecting plate 1 (21) is welded to the upper longitudinal beam (33) of the support.

9. The C-type suspension arm mounting structure according to claim 8, characterized in that: The second connecting plate (22) is an inverted trapezoidal structure, the inner end surfaces of the front combined mounting seat (11) and the rear combined mounting seat (14) are respectively connected to a second connecting plate (22), and the upper end of the second connecting plate (22) is welded to the upper longitudinal beam (33) of the support.

10. The C-type suspension arm mounting structure according to claim 8, characterized in that: The connecting plate three (23) is a right-angled trapezoidal structure and is horizontally arranged between the front assembly mounting seat (11) and the left mounting seat (13) or the front assembly mounting seat (11) and the right mounting seat (12); the bottom edge of the connecting plate three (23) is connected to the left mounting seat (13) or the right mounting seat (12), and the top edge of the connecting plate three (23) is connected to the connecting plate two (22) on the inner side of the front assembly mounting seat (11).

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