Anti-roll bar connecting rod

Abstract

The utility model relates to an anti-roll bar connecting rod which comprises a middle rod and two ball head assemblies arranged at the two ends of the middle rod respectively, and the middle rod is connected with the ball head assemblies through adjustable connecting structures. The inner threaded hole is formed in the end of the middle rod, the outer threaded rod is connected with the ball head assembly and matched with the inner threaded hole, the locking assembly is used for locking the angle position of the outer threaded rod relative to the middle rod, the outer threaded rod is screwed into the inner threaded hole, and the locking assembly is connected with the outer threaded rod. The locking assembly comprises one or more locking nuts matched with the external threaded rod and spring washers arranged on the external threaded rod in a sleeving mode and matched with the locking nuts. According to the anti-roll bar connecting rod, the ball head assembly and the middle rod are in threaded connection, that is, the detachable ball head assembly and the middle rod are in threaded connection, and the locking assembly is adopted for fixing, so that the design and machining difficulty can be reduced, the angle of the ball head assembly is convenient to adjust, and the stress defect is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an anti-roll bar connecting rod. Background Art

[0002] While driving, a car receives road signals, causing suspension positioning parameters to change, impacting vehicle handling stability and ride comfort. Multi-link suspension can reduce fore-aft forces from the road, improving ride comfort and smoothness during acceleration and braking, while also ensuring stability in straight-line driving. In complex suspension systems, anti-roll bars ensure the proper orientation of the stabilizer bar and shock absorber mounting points relative to the kingpin in the vehicle's specified direction, transmit the stabilizer bar's anti-roll torque, and set the angle between the stabilizer bar and the suspension kingpin. Therefore, their structural design must ensure the proper connection between the stabilizer bar and shock absorber, ensuring that the axes of the ball joints at both ends form the desired spatial angle. Even with the current welding process for connecting the ball joint assembly and the connecting rod, stress defects or large angular errors are unavoidable.

[0003] The main function of the anti-roll bar link is to connect the stabilizer bar to the vehicle body structure, that is, to the shock absorber. The shock absorber is connected to the wheel via a link and a clevis. This acts as a stabilizer bar to prevent the vehicle from rolling significantly laterally when cornering.

[0004] The original anti-roll bar link design resulted in varying angles for the ball joint, depending on the specific vehicle's installation location and the relative positioning of the stabilizer bar and shock absorber. Furthermore, the ball joint assembly and rod were welded, which was prone to defects and could negatively impact strength and durability, requiring exceptional welding skills. The installation position was primarily determined by the spatial alignment of the stabilizer bar and shock absorber. Preliminary design inputs were required to ensure the correct connection of the anti-roll bar, stabilizer bar, and shock absorber to ensure safe and stable assembly. The resulting spatial angle of the ball joint assembly was complex during the one-piece design and processing.

[0005] In summary, it is necessary to consider redesigning the anti-roll bar link structure in a form that is conducive to adjusting the angle between the ball head part and the rod, and avoiding defects that may be caused by similar welding processes. Summary of the Invention

[0006] The utility model aims to provide an anti-roll bar connecting rod which is convenient for adjusting the spatial angle formed by ball heads at both ends and avoids defects caused by processing technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A roll bar link is used to connect the roll bar on a vehicle with the body of the vehicle. The roll bar link includes an intermediate rod and two ball head assemblies respectively arranged at both ends of the intermediate rod. The intermediate rod and the ball head assemblies are connected by an adjustable connection structure. The adjustable connection structure includes an internal threaded hole opened at the end of the intermediate rod, an external threaded rod connected to the ball head assembly and matching the internal threaded hole, and a locking assembly for locking the angular position of the external threaded rod relative to the intermediate rod. The external threaded rod is screwed into the internal threaded hole, and the locking assembly is connected to the external threaded rod.

[0009] The locking assembly includes one or more locking nuts that cooperate with the externally threaded rod.

[0010] The locking assembly includes a pair of locking nuts that are locked against each other.

[0011] The locking assembly further includes a spring washer sleeved on the externally threaded rod and matched with the locking nut.

[0012] The spring washer is arranged between the locking nut and the intermediate rod.

[0013] The surfaces of the ball head assembly, the intermediate rod, the locking nut and the spring washer are provided with a single-layer phosphating anti-corrosion layer.

[0014] The internal threaded hole is coaxially arranged with the intermediate rod.

[0015] The ball head assembly includes a housing, a ball head arranged in the housing, and a mounting rod connected to the ball head and extending out of the housing.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: in the anti-roll bar connecting rod of the present invention, the ball head assembly and the intermediate rod are threadedly connected, that is, a detachable ball head assembly is threadedly connected to the intermediate rod and fixed by a locking assembly, which can reduce the difficulty of design and processing, facilitate adjustment of the angle of the ball head assembly, and avoid stress defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1 This is an exploded view of the anti-roll bar connecting rod of the present invention.

[0018] In the above figures: 1. ball head assembly; 2. intermediate rod; 3. locking nut; 4. spring washer; 5. externally threaded rod; 6. internally threaded hole. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0020] Example 1: As shown in the attached Figure 1 As shown, an anti-roll bar link for connecting an anti-roll bar on a vehicle to a shock absorber on the vehicle body includes an intermediate rod 2, two ball head assemblies 1, and an adjustable connection structure. The two ball head assemblies 1 are respectively arranged at both ends of the intermediate rod 2, and the intermediate rod 2 and the ball head assemblies 1 are connected by the adjustable connection structure.

[0021] The middle rod 2 is made of high-strength steel and is machined to obtain a solid cylindrical structure.

[0022] The adjustable connection structure includes an internally threaded hole 6 at the end of the intermediate rod 2, an externally threaded rod 5 connected to the ball head assembly 1 and mating with the internally threaded hole 6, and a locking assembly. The internally threaded hole 6 is coaxial with the intermediate rod 2, and the externally threaded rod 5 is screwed into the internally threaded hole 6. The locking assembly is used to lock the angular position of the externally threaded rod 5 relative to the intermediate rod 2. The locking assembly is connected to the externally threaded rod 5.

[0023] The locking assembly includes at least one or more locking nuts 3 that mate with the externally threaded rod 5. In this embodiment, the locking assembly comprises a pair of locking nuts 3 that lock against each other. The locking assembly also includes a spring washer 4, which is sleeved onto the externally threaded rod 5 and mates with the locking nuts 3. The spring washer 4 is positioned between the locking nuts 3 and the intermediate rod 2. The locking nuts 3 are made of high-strength steel, and the spring washers 4 are made of high-strength spring steel.

[0024] The ball head assembly 1 includes a shell connected to the intermediate rod 2 through the above-mentioned adjustable connection structure, a ball head arranged in the shell, and a mounting rod connected to the ball head and extending outside the shell to be connected to the stabilizer bar or shock absorber. The shell and the ball head are both made of high-strength steel and also include structures such as a plastic inner core and a sealing rubber sleeve.

[0025] The surfaces of the ball head assembly 1, the intermediate rod 2, the locking nut 3 and the spring washer 4 are provided with a single-layer phosphating anti-corrosion layer.

[0026] The manufacturing process for the anti-roll bar link is as follows: A straight cylindrical profile is cut from the incoming material to form the intermediate rod 2 prototype. Coarse internal threaded holes 6 are machined at each end to achieve the basic dimensions of the intermediate rod 2. A coarse external thread is machined into the connecting rod at the end of the ball head assembly 1 to mate with the intermediate rod 2. To better match the relative positioning of components in the target platform suspension and ensure interchangeability, the length and outer diameter of the intermediate rod 2, the length and thread of the connecting rod of the ball head assembly 1, and the thickness of the lock nut and spring washer 4 can be verified by simulation.

[0027] The four structures above require a single layer of phosphate treatment for corrosion protection. The ball head assembly 1 undergoes phosphate treatment of the housing and ball head prior to assembly. The intermediate rod 2, locking nut, and spring washer 4 are then phosphated as a whole after machining.

[0028] The ball head assembly 1 and intermediate rod 2 are threaded together. Different sizes and numbers of locking nuts 3 are used to adjust the relative angles of the ball head assemblies 1 at both ends, ensuring smooth engagement with the mating component. To prevent loosening between the ball head assembly 1 and intermediate rod 2, the locking nuts 3 are tightened against the top, and the spring washers 4 also prevent loosening, ensuring the anti-roll bar link remains functional and reliable during operation.

[0029] In summary, the innovations of the anti-roll bar link lie in the following: 1. Connection: The ball head assembly 1 and the intermediate rod 2 are threaded, making it easy to find the correct angle; 2. Locking: One or more locking nuts 3 are used to adjust the angle of the ball head assembly 1 at both ends, allowing for smooth docking with the mating component. Its benefits include: 1) The relative angle between the ball head assembly 1 and the intermediate rod 2 is adjustable, providing spatial flexibility, enhancing applicability across different platforms, and reducing R&D costs; 2) No angle constraints are imposed during the design and manufacturing stages, reducing design and manufacturing complexity; 3) Defects such as stress concentration and fatigue cracking at the weld between the rod and the ball head are effectively avoided; 4) The ball head assembly 1 and the intermediate rod 2 are highly interchangeable, making them suitable for mass production and reducing waste.

[0030] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those familiar with the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications based on the spirit of the present invention are intended to be included in the scope of protection of the present invention.

Claims

1. An anti-roll bar link for connecting an anti-roll bar on a vehicle to a vehicle body, the anti-roll bar link comprising an intermediate bar and two ball head assemblies respectively provided at both ends of the intermediate bar, characterized in that: The intermediate rod is connected to the ball head assembly through an adjustable connecting structure, which includes an internal threaded hole opened at the end of the intermediate rod, an external threaded rod connected to the ball head assembly and matching the internal threaded hole, and a locking assembly for locking the angular position of the external threaded rod relative to the intermediate rod. The external threaded rod is screwed into the internal threaded hole, and the locking assembly is connected to the external threaded rod.

2. The anti-roll bar link according to claim 1, characterized in that: The locking assembly includes one or more locking nuts that cooperate with the externally threaded rod.

3. The anti-roll bar link according to claim 2, characterized in that: The locking assembly includes a pair of locking nuts that are locked against each other.

4. The anti-roll bar link according to claim 3, characterized in that: The locking assembly further includes a spring washer sleeved on the externally threaded rod and matched with the locking nut.

5. The anti-roll bar link according to claim 4, characterized in that: The spring washer is arranged between the locking nut and the intermediate rod.

6. The anti-roll bar link according to claim 5, characterized in that: The surfaces of the ball head assembly, the intermediate rod, the locking nut and the spring washer are provided with a single-layer phosphating anti-corrosion layer.

7. The anti-roll bar link according to claim 1, characterized in that: The internal threaded hole is coaxially arranged with the intermediate rod.

8. The anti-roll bar link according to claim 1, characterized in that: The ball head assembly includes a housing, a ball head arranged in the housing, and a mounting rod connected to the ball head and extending out of the housing.

Images