Spring control arm

Abstract

The utility model discloses a spring control arm which is integrally formed and provided with a hollow cavity, an auxiliary frame used for being connected with a vehicle, a steering knuckle and a spring tray, a characteristic hole is formed in one end of the spring control arm so as to be connected with the auxiliary frame, and a round hole is formed in the other end of the spring control arm so as to be connected with the steering knuckle. A mounting hole is formed in the middle section of the spring control arm to be connected with the spring tray, and the spring control arm is characterized in that the spring control arm is provided with an inner connecting part and a back connecting part which are oppositely arranged, the mounting hole is formed in the inner connecting part, and a plurality of reinforcing ribs extending in the axial direction of the spring control arm are formed on the back connecting part. The spring control arm is made of a linear cavity profile extruded by aluminum alloy, the wall thickness is about 4-6 mm, the spring control arm is manufactured through the integrated process of bending, stamping and heat treatment, the weight of the spring control arm is lighter, a plurality of reinforcing ribs are arranged on the back, the structural strength of the spring control arm is improved, and the service life of the spring control arm is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a spring control arm. Background Technology

[0002] In a vehicle's multi-link rear suspension, such as a four-link or five-link rear suspension, there is a link with a larger structural feature compared to the other links. This link's main characteristic is that it supports the entire spring; it is generally called the spring control arm or spring link. In existing technology, the spring control arm is mainly used to connect the vehicle's subframe, steering knuckle, and spring. The steering knuckle primarily serves as a structure connecting the wheel system to the suspension rods, the spring primarily serves as a structure connecting the suspension rods to the vehicle's upper body, and the subframe's main function is to support the vehicle body and connect the suspension links, thus linking the vehicle body to the suspension system.

[0003] In pursuit of lighter weight, existing spring control arms are all hollow cavity structures with thin walls, resulting in low structural strength and short service life. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a spring control arm.

[0005] This utility model is achieved through the following technical solution:

[0006] A spring control arm, integrally formed and having a hollow cavity, is used to connect a vehicle subframe, a steering knuckle, and a spring tray. One end of the spring control arm has a feature hole for connecting to the subframe, and the other end has a circular hole for connecting to the steering knuckle. The middle section of the spring control arm has a mounting hole for connecting to the spring tray. The spring control arm is characterized in that it has an inner connection portion and a back connection portion disposed opposite to each other, the mounting hole is disposed on the inner connection portion, and the back connection portion has a plurality of reinforcing ribs extending along the axial direction of the spring control arm.

[0007] Furthermore, there are two of the aforementioned reinforcing ribs, with each reinforcing rib forming on one side of the back joint.

[0008] Furthermore, a recessed portion is formed on the back joint, and two reinforcing ribs are symmetrically arranged on both sides of the recessed portion.

[0009] Furthermore, both ends of the spring control arm are bent toward the inner part to form the recess and the reinforcing rib.

[0010] Furthermore, the inner part has a first U-shaped opening at one end near the feature hole, and the back part has a second U-shaped opening at one end near the feature hole. In the axial direction, the length of the first U-shaped opening is greater than the length of the second U-shaped opening, and in the radial direction, the width of the first U-shaped opening is greater than the width of the second U-shaped opening.

[0011] Furthermore, the other end of the inner connection portion is provided with a third U-shaped opening, and the other end of the back connection portion is provided with a fourth U-shaped opening. In the axial direction, the length of the third U-shaped opening is greater than the length of the fourth U-shaped opening, and in the radial direction, the width of the third U-shaped opening is greater than the width of the fourth U-shaped opening.

[0012] Furthermore, one end of the spring control arm has a pair of symmetrical first cantilever arms, and the other end has a pair of symmetrical second cantilever arms. Each pair of first cantilever arms has the feature hole, and each pair of second cantilever arms has the circular hole. The distance between the pair of first cantilever arms is not equal to the distance between the pair of second cantilever arms.

[0013] Furthermore, the first cantilever has a waist-shaped concave-convex surface on the side opposite to the other first cantilever, and the feature hole is disposed on the waist-shaped concave-convex surface. A feature hole adjustment block is fixedly disposed on the waist-shaped concave-convex surface, and the feature hole adjustment block has a waist-shaped hole, which is completely aligned with the feature hole.

[0014] Furthermore, the inner part includes a spring seat surface, which is a smooth plane and abuts against the spring tray. In the radial direction, the width of the spring seat surface is greater than the width of the area where the pair of first cantilever arms are located. The mounting hole is provided on the spring seat surface.

[0015] Furthermore, the diameter of the mounting hole is 120mm-160mm.

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] 1. In this embodiment, the spring control arm is made of linear hollow profile extruded from aluminum alloy with a wall thickness of about 4-6mm. It is manufactured by an integrated process of bending, stamping and heat treatment, which makes it lighter.

[0018] 2. By forming multiple reinforcing ribs along the axial direction of the spring control arm at the back joint, the structural strength of the spring control arm is increased, and its service life is extended.

[0019] 3. By bending the end of the spring control arm inward, the height of the spring seat surface is lower than the height of the area where the feature hole is located, so that the spring control arm can better fit and connect to the subframe.

[0020] 4. By punching the material of the spring control arm, that is, punching two U-shaped opening structures of different sizes at both ends of the inner part and the back part respectively, a pair of first cantilever arms and a pair of second cantilever arms are formed, and the width distance between the pair of first cantilever arms and the pair of second cantilever arms is different, which can flexibly meet the connection of the subframe and the steering knuckle, and can also flexibly meet the space requirements of the vehicle chassis structure.

[0021] 5. By setting a waist-shaped concave-convex surface on the first cantilever where the feature hole is located, and riveting a feature hole adjustment block on the waist-shaped concave-convex surface, the strength of the waist-shaped concave-convex surface is strengthened, which facilitates the adjustment of the four-wheel alignment parameters of the wheel and avoids direct friction between the eccentric fastener and the waist-shaped concave-convex surface. Attached Figure Description

[0022] Figure 1 This is a front perspective view of a spring control arm according to an embodiment of the present invention.

[0023] Figure 2 This is a front view of a spring control arm according to an embodiment of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the back of a spring control arm according to an embodiment of the present invention;

[0025] Figure 4 This is a rear view of a spring control arm according to an embodiment of the present invention;

[0026] Figure 5 This is a side view of a spring control arm according to an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional rendering of a spring control arm according to an embodiment of the present invention.

[0028] Labeling Explanation: 101, Feature Hole; 102, Circular Hole; 103, Mounting Hole; 103a, Limiting Groove; 104, Inner Connection; 105, Back Connection; 106, Reinforcing Rib; 105a, Recess; 107, First Cantilever; 108, Second Cantilever; 109, Feature Hole Adjusting Block; 111, First U-Shaped Opening; 112, Second U-Shaped Opening; 113, Third U-Shaped Opening; 114, Fourth U-Shaped Opening; 115, Waist-Shaped Concave-convex Cover; 116, U-Shaped Concave-convex Cover; 117, Spring Seat Surface; 118, Second Waist-Shaped Hole; 119, Second Circular Hole; 120, Third Circular Hole; 121, Flanged Edge. Detailed Implementation

[0029] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] like Figures 1 to 6 As shown, a spring control arm of one embodiment of this utility model is used as the rear lower control arm in the multi-link rear suspension of a vehicle. The spring control arm is integrally formed and has a hollow cavity for connecting the vehicle's subframe (not shown), steering knuckle (not shown), and spring tray (not shown).

[0031] It is worth noting that in this embodiment, the spring control arm is a linear hollow profile extruded from aluminum alloy with a wall thickness of about 4-6mm. It is manufactured by an integrated process of bending, stamping and heat treatment, which makes it structurally strong and has a thin wall thickness, which is convenient for lightweight vehicle design.

[0032] Optional, focus on referencing Figure 1 and Figure 3 The spring control arm has a feature hole 101 at one end for connecting to the subframe and a circular hole 102 at the other end for connecting to the steering knuckle. A mounting hole 103 is formed in the middle section of the spring control arm for connecting to the spring tray. The spring control arm has an inner connection portion 104 and a back connection portion 105 disposed opposite to each other, with the mounting hole 103 located on the inner connection portion 104. Multiple reinforcing ribs 106 extending along the axial direction of the spring control arm are formed on the back connection portion 105 to improve the overall structural strength of the spring control arm, thereby increasing its service life.

[0033] Specifically, the two ends of the spring control arm are bent toward the inner connection 104, so that the back connection 105 is recessed inward to form a recess 105a and multiple reinforcing ribs 106, thereby improving the overall structural strength of the spring control arm and making it easier to process.

[0034] Optionally, the number of reinforcing ribs 106 is set to two, with the two reinforcing ribs 106 respectively formed on both sides of the back joint 105 and symmetrically arranged on both sides of the recess 105a, so as to uniformly improve the overall structural strength of the spring control arm, thereby improving the service life of the spring control arm.

[0035] It is understood that in other alternative embodiments, the number of recesses 105a and reinforcing ribs 106 may also be increased. This embodiment only provides an optimal number setting, and is not limited thereto.

[0036] Further reference Figure 2 The inner connecting portion 104 has a first U-shaped opening 111 at one end near the feature hole 101, and the back connecting portion 105 has a second U-shaped opening 112 at one end near the feature hole 101. In the axial direction, the length of the first U-shaped opening 111 is greater than the length of the second U-shaped opening 112, and in the radial direction, the width of the first U-shaped opening 111 is greater than the width of the second U-shaped opening 112. This allows the spring control arm to better fit the subframe, improves the strength of the connection, and increases service life and vehicle safety.

[0037] The inner connection portion 104 has a third U-shaped opening 113 at one end, and the back connection portion 105 has a fourth U-shaped opening 114 at the other end. In the axial direction, the length of the third U-shaped opening 113 is greater than the length of the fourth U-shaped opening 114, and in the radial direction, the width of the third U-shaped opening 113 is greater than the width of the fourth U-shaped opening 114. This allows the spring control arm to better fit the steering knuckle, improving the strength of the connection, extending service life, and enhancing vehicle safety.

[0038] In this embodiment, the first U-shaped opening 111, the second U-shaped opening 112, the third U-shaped opening 113, and the fourth U-shaped opening 114 are all formed by punching, which makes the spring control arm more integrated, easier to reduce weight, and has higher strength. It can be understood that after punching, one end of the spring control arm forms a symmetrical pair of first cantilever arms 107, and the other end forms a symmetrical pair of second cantilever arms 108. Furthermore, the distance between the pair of first cantilever arms 107 and the distance between the pair of second cantilever arms 108 are set to be unequal, thereby flexibly meeting the connection requirements of the subframe and steering knuckle, and of course, also flexibly meeting the space requirements of the vehicle chassis structure.

[0039] Further reference Figure 5 Each pair of first cantilever arms 107 has a feature hole 101, and each pair of second cantilever arms 108 has a circular hole 102. In the axial direction, the feature holes 101 on the pair of first cantilever arms 107 are completely aligned and pass through the spring control arm, and the circular holes 102 on the pair of second cantilever arms 108 are also completely aligned and pass through the spring control arm, so as to facilitate the connection of the subframe and the steering knuckle.

[0040] Optionally, a waist-shaped concave-convex surface 115 is provided on the side of the first cantilever 107 opposite to the other first cantilever 107, and a feature hole 101 is provided on the waist-shaped concave-convex surface 115. A U-shaped concave-convex surface 116 is provided on the side of the second cantilever 108 opposite to the other second cantilever 108, and a circular hole is provided on the U-shaped concave-convex surface 116. The thickness of the area where the waist-shaped concave-convex surface 115 and the U-shaped concave-convex surface 116 are located is less than the thickness of the area where a single first cantilever 107 and the second cantilever 108 are located, so that when the spring control arm is connected to the subframe and the steering knuckle, the first cantilever 107 and the second cantilever 108 can limit the movement of the subframe and the steering knuckle by the fact that their respective areas are higher than the thickness of the area where the waist-shaped concave-convex surface 115 and the U-shaped concave-convex surface 116 are located, making the connection more stable.

[0041] Optionally, a feature hole adjusting block 109 is fixedly provided on the waist-shaped concave-convex surface 115. The feature hole adjusting block 109 has a waist-shaped hole that is completely aligned with the feature hole 101. Specifically, the feature hole adjusting block 109 is riveted to both sides of the spring control arm to strengthen the waist-shaped concave-convex surface 115. In this embodiment, two third circular holes 120 are formed on the waist-shaped concave-convex surface 115 for riveting the feature hole adjusting block 109, and the two third circular holes 120 are respectively formed on both sides of the feature hole 101, so that the feature hole adjusting block 109 can be more stably fixed on the waist-shaped concave-convex surface 115.

[0042] Furthermore, in this embodiment, the subframe is connected to the feature hole 101 via an eccentric fastener. Specifically, the eccentric fastener passes through the waist-shaped hole of the feature hole adjusting block 109 on one side and through the bushing hole on the subframe to the waist-shaped hole of the feature hole adjusting block 109 on the other side. The feature hole adjusting block 109 also has a limiting function, enabling adjustment of the four-wheel alignment parameters of the vehicle wheels. Furthermore, the feature hole adjusting block 109 avoids direct friction between the eccentric fastener and the waist-shaped concave-convex surface 115, thus improving its service life.

[0043] Key reference Figure 2 and Figure 5 The inner portion 104 also includes a spring seat surface 117, which is a smooth plane and abuts against the spring tray. In the radial direction, the width of the spring seat surface 117 is greater than the width of the area where the pair of first cantilever 107 are located. A mounting hole 103 is provided on the spring seat surface 117 for connection with the spring tray. Specifically, the width and flatness of the spring seat surface 117 meet the requirements for the sleeve connection of the spring tray. It is understood that in this embodiment, the mounting hole 103 is used to connect the spring tray; in other alternative embodiments, it can also be used to connect an air spring shock absorber.

[0044] Meanwhile, the height of the area where the spring seat surface 117 is located is less than the height of the area where the feature hole 101 is located, so as to meet the connection requirements of the subframe.

[0045] In addition, a limiting groove 103a is provided at the edge of the mounting hole 103. The limiting groove 103a can accommodate the protrusion of the spring tray to limit the relative movement between the spring tray and the spring control arm.

[0046] Furthermore, the diameter of the mounting hole 103 is 120mm-160mm. When manufacturing the spring control arm, the diameter of the mounting hole 103 can be freely selected to improve the overall adaptability of the spring control arm to different spring trays.

[0047] Optional, please refer to. Figure 2 and Figure 3 The spring seat surface 117 is also provided with a second oblong hole 118 and a second circular hole 119, which are used for process holes and plastic housing insertion, respectively. It is worth noting that, since the spring control arm is integrally formed, flanges 121 are formed on both sides of the inner connection portion 104 during the extrusion forming process, which can improve the overall structural strength of the spring control arm. The spring seat surface 117 includes flanges 121 on both sides, and the second oblong hole 118 and the second circular hole 119 are respectively provided on the flanges 121 on both sides to avoid affecting the overall structural strength of the spring control arm.

[0048] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A spring control arm, the spring control arm being integrally formed and having a hollow cavity, for connecting a vehicle subframe, a steering knuckle, and a spring tray, wherein one end of the spring control arm has a feature hole (101) for connecting to the subframe, the other end has a circular hole (102) for connecting to the steering knuckle, and the middle section of the spring control arm has a mounting hole (103) for connecting to the spring tray, characterized in that, The spring control arm has an inner connection portion (104) and a back connection portion (105) disposed opposite to each other. The mounting hole (103) is disposed on the inner connection portion (104), and a plurality of reinforcing ribs (106) extending along the axial direction of the spring control arm are formed on the back connection portion (105).

2. The spring control arm according to claim 1, characterized in that, The number of the multiple reinforcing ribs (106) is two, and the two reinforcing ribs (106) are respectively formed on both sides of the back joint (105).

3. The spring control arm according to claim 2, characterized in that, A recessed portion (105a) is formed on the back joint (105), and two reinforcing ribs (106) are symmetrically arranged on both sides of the recessed portion (105a).

4. The spring control arm according to claim 3, characterized in that, The two ends of the spring control arm are bent toward the inner part (104) to form the recess (105a) and the reinforcing rib (106).

5. The spring control arm according to claim 1, characterized in that, The inner part (104) has a first U-shaped opening (111) at one end near the feature hole (101), and the back part (105) has a second U-shaped opening (112) at one end near the feature hole (101). In the axial direction, the length of the first U-shaped opening (111) is greater than the length of the second U-shaped opening (112), and in the radial direction, the width of the first U-shaped opening (111) is greater than the width of the second U-shaped opening (112).

6. The spring control arm according to claim 5, characterized in that, The inner part (104) has a third U-shaped opening (113) at one end, and the back part (105) has a fourth U-shaped opening (114) at the other end. In the axial direction, the length of the third U-shaped opening (113) is greater than the length of the fourth U-shaped opening (114), and in the radial direction, the width of the third U-shaped opening (113) is greater than the width of the fourth U-shaped opening (114).

7. The spring control arm according to claim 1, characterized in that, One end of the spring control arm has a pair of symmetrical first cantilever arms (107), and the other end has a pair of symmetrical second cantilever arms (108). The pair of first cantilever arms (107) are provided with the feature hole (101), and the pair of second cantilever arms (108) are provided with the circular hole (102). The distance between the pair of first cantilever arms (107) is not equal to the distance between the pair of second cantilever arms (108).

8. The spring control arm according to claim 7, characterized in that, The first cantilever (107) has a waist-shaped concave-convex surface (115) on the side opposite to the other first cantilever (107), and the feature hole (101) is disposed on the waist-shaped concave-convex surface (115). A feature hole adjusting block (109) is fixedly disposed on the waist-shaped concave-convex surface (115), and the feature hole adjusting block (109) has a waist-shaped hole, which is completely aligned with the feature hole (101).

9. The spring control arm according to claim 1, characterized in that, The inner part (104) includes a spring seat surface (117), which is a smooth plane and abuts against the spring tray. In the radial direction, the width of the spring seat surface (117) is greater than the width of the area where the pair of first cantilever (107) are located. The mounting hole (103) is provided on the spring seat surface (117).

10. The spring control arm according to claim 1, characterized in that, The diameter of the mounting hole (103) is 120mm-160mm.

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