Bushing assembly for a stabilizer bar of a vehicle

Abstract

A bushing assembly for a stabilizer bar in a vehicle includes an open ring defining a channel to engage an outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, and at least one axial retention flange disposed at the first open ring end or the second open ring end. The bushing assembly includes an elastomeric bushing defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange at the second bushing end. At least one of the first axial flange and the second axial flange abut the at least one axial retention flange of the open ring to create a zero-gap condition. The bushing assembly further includes a band clamp to secure the bushing assembly to the vehicle.

Description

Technical Field

[0001] This disclosure relates to a bushing assembly for a stabilizer bar in a vehicle, and a method for assembling the bushing assembly and the stabilizer bar into the frame of the vehicle. Background Technology

[0002] The stabilizer bar connects the left and right suspension components in a vehicle and reduces body roll when the vehicle is cornering. In one particular method, the stabilizer bar is mounted to the vehicle's frame via a sliding bushing. However, the sliding bushing allows both torsional and axial movement, resulting in a need for large clearances. In some vehicles with limited packing space, accommodating the large clearances required for the sliding bushing can be problematic.

[0003] One approach to alleviate these problems and reduce the amount of clearance required for the sliding bushing is to attach a collar to the stabilizer bar to limit movement. However, some clearance is still required due to variations in frame construction. Another approach involves using a clamp or stabilizer bar-attached rubber component integrated with the stabilizer bar to limit movement. However, this method is effective only with relatively small stabilizer bars. This is because the forces generated by movement from a larger stabilizer bar exceed the strain capacity of the rubber material at the rubber-to-bar interface of the clamp or stabilizer bar.

[0004] Therefore, while current stabilizer bars have achieved their intended purpose, there is a need in the art for an improved method for mounting stabilizer bars to vehicle frames. Summary of the Invention

[0005] According to several aspects, a bushing assembly for a stabilizer bar in a vehicle is disclosed. The bushing assembly includes an open ring defining a channel engaging an outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, and at least one axial retaining flange disposed at either the first or second open ring end. The bushing assembly also includes an elastomeric bushing defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end. The inner diameter of the elastomeric bushing engages with the outer diameter surface of the open ring, and at least one of the first and second axial flanges abuts against at least one axial retaining flange of the open ring to create a zero-clearance state. The bushing assembly also includes a clip disposed on the outer diameter of the elastomeric bushing, wherein the clip secures the bushing assembly to the vehicle.

[0006] On the other hand, the inner diameter of the elastomer bushing has a reduced coefficient of friction compared to the elastomer material constituting the elastomer bushing.

[0007] On the other hand, the reduced coefficient of friction is generated by a polytetrafluoroethylene (PFTE) liner or a lubricant pouch positioned around the inner diameter of the elastomer bushing.

[0008] In another aspect, the cotter ring includes a second retaining flange offset from the end of the second cotter ring.

[0009] In another aspect, the open ring includes a locking feature disposed at the end of the second open ring.

[0010] On the other hand, the bushing assembly includes an open clip divided into two halves, wherein the open clip is disposed on a locking feature located at the second open ring end of the open ring.

[0011] On the other hand, the opening clamp defines an inner channel having an inner surface shaped to surround and engage the outer surface of the stabilizer bar.

[0012] On the other hand, the step located in the inner channel of the opening clamp is shaped to surround and engage the locking feature located at the end of the second opening ring.

[0013] On the other hand, the open ring is made of a material with a coefficient of friction of less than about 0.35 and a flexural modulus of at least about 3.1 gigapascals.

[0014] On the other hand, the elastomeric bushing is made of an elastomeric material having a hardness of about 50A to about 90A on a Shore A scale.

[0015] In another aspect, the cotter ring includes a second retaining flange disposed at the end of the second cotter ring.

[0016] On the other hand, the bushing assembly includes an open clamp divided into two halves, wherein the end face of the open ring abuts against the end face of the open clamp.

[0017] In another aspect, the bushing assembly also includes an adhesive layer disposed on the inner diameter surface of the channel along the open ring.

[0018] On the other hand, the adhesive layer includes an adhesive that bonds or adheres to the outer surface of the stabilizer bar.

[0019] In another aspect, a method for assembling a stabilizer bar assembly, including a bushing assembly, to a vehicle frame is disclosed. The method includes positioning an open-end ring along the outer surface of the stabilizer bar, wherein the open-end ring defines a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first open-end ring end, a second open-end ring end, and at least one axial retaining flange disposed at the first or second open-end ring end. The method further includes securing an elastomeric bushing around the outer surface of the open-end ring by a clip, wherein the elastomeric bushing defines a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein at least one of the first and second axial flanges abuts against at least one axial retaining flange of the open-end ring to create a zero-clearance state.

[0020] In one aspect, the method also includes placing the two halves of the opening clamp on the locking feature located at the second opening ring end of the opening ring.

[0021] On the other hand, the method also includes loosely securing the two halves of the opening clamp to each other using mechanical fasteners.

[0022] In another aspect, the method includes axially centering the stabilizer bar assembly; and securing the stabilizer bar assembly to the vehicle frame using clips.

[0023] On the other hand, the method includes fastening mechanical fasteners to press the two halves of the open clamp together.

[0024] In one aspect, a bushing assembly for a stabilizer bar in a vehicle is disclosed. The bushing assembly includes an open ring defining a channel engaging with an outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, a locking feature disposed at the second open ring end, and at least one axial retaining flange disposed at either the first or second open ring end. The bushing assembly also includes an elastomeric bushing defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein the inner diameter of the elastomeric bushing engages with the outer diameter surface of the open ring, and at least one of the first and second axial flanges abuts against at least one axial retaining flange of the open ring to create a zero-clearance state. The bushing assembly also includes a clip disposed on the outer diameter of the elastomeric bushing, wherein the clip secures the bushing assembly to the vehicle. The bushing assembly also includes an open clip divided into two halves, wherein the open clip is disposed on the locking feature located at the second open ring end of the open ring.

[0025] This invention includes the following solutions: Option 1. A bushing assembly for a stabilizer bar in a vehicle, the bushing assembly comprising: An open ring, the open ring defining a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, and at least one axial retaining flange disposed at the first open ring end or the second open ring end; An elastomeric bushing, defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein the inner diameter of the elastomeric bushing engages with the outer diameter surface of the open ring, and at least one of the first axial flange and the second axial flange abuts against at least one axially retaining flange of the open ring to create a zero-clearance state; and A clip is disposed on the outer diameter of the elastomeric bushing, wherein the clip secures the bushing assembly to the vehicle.

[0026] Option 2. The bushing assembly as described in Option 1, wherein the inner diameter of the elastomeric bushing has a reduced coefficient of friction compared to the elastomeric material constituting the elastomeric bushing.

[0027] Option 3. The bushing assembly as described in Option 2, wherein the reduced coefficient of friction is generated by a polytetrafluoroethylene (PFTE) lining or lubricant bag disposed around the inner diameter of the elastomer bushing.

[0028] Option 4. The bushing assembly as described in Option 1, wherein the open ring includes a second retaining flange offset from the end of the second open ring.

[0029] Option 5. The bushing assembly as described in Option 1, wherein the open ring includes a locking feature disposed at the end of the second open ring.

[0030] Option 6. The bushing assembly as described in Option 5, the bushing assembly further comprising an open clamp divided into two halves, wherein the open clamp is disposed on a locking feature located at the second open ring end of the open ring.

[0031] Option 7. The bushing assembly as described in Option 6, wherein the opening clamp defines an inner channel having an inner surface shaped to surround and engage the outer surface of the stabilizer bar.

[0032] Option 8. The bushing assembly as described in Option 6, wherein the step located within the inner channel of the opening clamp is shaped to surround and engage the locking feature located at the end of the second opening ring.

[0033] Option 9. The bushing assembly as described in Option 1, wherein the open ring is made of a material with a coefficient of friction of less than about 0.35 and a flexural modulus of at least about 3.1 gigapascals.

[0034] Option 10. The bushing assembly as described in Option 1, wherein the elastomeric bushing is made of an elastomeric material having a hardness of about 50A to about 90A on a Shore A scale.

[0035] Option 11. The bushing assembly as described in Option 1, wherein the open ring includes a second retaining flange disposed at the end of the second open ring.

[0036] Option 12. The bushing assembly as described in Option 11, the bushing assembly further comprising an open clamp divided into two halves, wherein the end face of the open ring abuts against the end face of the open clamp.

[0037] Option 13. The bushing assembly as described in Option 1, the bushing assembly further comprising an adhesive layer disposed along the inner diameter surface of the channel of the open ring.

[0038] Option 14. The bushing assembly as described in Option 13, wherein the adhesive layer comprises an adhesive bonded or adhered to the outer surface of the stabilizer bar.

[0039] Option 15. A method for assembling a stabilizer bar assembly, including a bushing assembly, to a vehicle frame, the method comprising: A cotter ring is positioned along the outer surface of the stabilizer bar, wherein the cotter ring defines a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first cotter ring end, a second cotter ring end, and at least one axially retaining flange disposed at the first cotter ring end or the second cotter ring end; and An elastomer bushing is secured around the outer surface of the open ring by a clip, wherein the elastomer bushing defines a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein at least one of the first axial flange and the second axial flange abuts against the at least one axial retaining flange of the open ring to create a zero-gap state.

[0040] Option 16. The method as described in Option 15, further comprising: Place the two halves of the opening clamp on the locking feature located at the second opening ring end of the opening ring.

[0041] Option 17. The method as described in Option 16, further comprising: The two halves of the opening clamp are loosely secured to each other by mechanical fasteners.

[0042] Option 18. The method as described in Option 17, further comprising: Center the stabilizer bar assembly axially; and The stabilizer bar assembly is secured to the vehicle frame using the clips.

[0043] Option 19. The method as described in Option 18, further comprising: Tighten the mechanical fasteners to press the two halves of the open clamp together.

[0044] Option 20. A bushing assembly for a stabilizer bar in a vehicle, the bushing assembly comprising: An open ring, the open ring defining a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, a locking feature provided at the second open ring end, and at least one axial retaining flange provided at the first open ring end or the second open ring end; An elastomeric bushing, the elastomeric bushing defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein the inner diameter of the elastomeric bushing engages with the outer diameter surface of the open ring, and at least one of the first axial flange and the second axial flange abuts against the at least one axial retaining flange of the open ring to create a zero-clearance state. A clip, the clip being disposed on the outer diameter of the elastomeric bushing, wherein the clip secures the bushing assembly to the vehicle; and An opening clamp, which is divided into two halves, wherein the opening clamp is disposed on the locking feature located at the second opening ring end of the opening ring.

[0045] Further areas of application will become apparent from the description provided herein. It should be understood that the descriptions and specific examples are intended for illustrative purposes only and are not intended to limit the scope of this disclosure. Attached Figure Description

[0046] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way.

[0047] Figure 1 This is a perspective view of one embodiment of a stabilizer bar and bushing assembly for a vehicle, according to an exemplary embodiment; Figure 2A According to the exemplary embodiments, along Figure 1 A sectional view of the stabilizer bar and bushing assembly taken by section line AA in the figure; Figure 2B This is an illustration of the bushing assembly 20 as viewed from the second opening ring end 38 according to an exemplary embodiment, wherein the opening clip 28 has been removed; Figure 3 According to exemplary embodiments, in Figure 2A An enlarged cross-sectional view of a portion of the stabilizer bar and bushing assembly shown; Figure 4 It is shown according to an exemplary embodiment that... Figure 1-3 A process flow diagram illustrating the method of assembling the bushing assembly and stabilizer bar into the vehicle. Figure 5 This is a perspective view of another embodiment of the bushing assembly according to an exemplary embodiment; Figure 6According to the exemplary embodiments, along Figure 5 A cross-sectional view of the stabilizer bar and bushing assembly taken by section line BB in the figure; Figure 7 It is shown according to an exemplary embodiment that... Figure 5-6 A process flow diagram illustrating the method of assembling the bushing assembly and stabilizer bar into the vehicle. Figure 8 This is a perspective view of another embodiment of a bushing assembly including an adhesive layer according to exemplary embodiments; and Figure 9 According to the exemplary embodiments, along Figure 8 The section view of the stabilizer bar and bushing assembly is taken by section line CC. Detailed Implementation

[0048] The following description is merely exemplary in nature and is not intended to limit this disclosure, application, or use.

[0049] refer to Figure 1 An exemplary stabilizer bar assembly 10 for a vehicle is shown. The stabilizer bar assembly 10 includes a stabilizer bar 18 and a bushing assembly 20 for mounting the stabilizer bar 18 to a vehicle frame (not shown). Although Figure 1 A bushing assembly 20 is shown, but it should be understood that the stabilizer bar 18 includes two bushing assemblies 20 corresponding to the left and right sides of the vehicle. Figure 2A It was cut along section line AA. Figure 1 A cross-sectional view of the bushing assembly 20 shown. (Reference) Figure 1 and Figure 2A In one embodiment, the bushing assembly 20 includes a split ring 22, an elastomeric bushing 24, a band clip 26, and an open clip 28. The band clip 26 includes opposing sides 14, with holes 16 located on each of the opposing sides 14 of the band clip 26. Figure 1 Only one hole 16 is visible. Hole 16 is shaped to receive a fastener (not shown). The fastener received by hole 16 of clip 26 also engages with the vehicle frame to secure the stabilizer bar 18 to the vehicle frame.

[0050] like Figure 1 As seen, the split 56 is arranged longitudinally along the opening ring 22. (Reference) Figure 2A The open ring 22 defines a channel 30, an inner diameter surface 32, an outer diameter surface 34, a first open ring end 36, a second open ring end 38, and at least one axially retaining flange 40, all shaped to surround the stabilizer bar 18. The inner diameter surface 32 is disposed along the channel 30 of the open ring 22 and is adjacent to the outer surface 54 of the stabilizer bar 18. Figure 3 ) Joining. In such Figure 1-2AIn the embodiment shown, the open ring 22 includes two axial retaining flanges 40A and 40B, wherein the first axial retaining flange 40A is disposed at the first open ring end 36 and the second axial retaining flange 40B is offset from the second open ring end 38 by a distance D. Conversely, in the embodiment shown... Figure 5-6 In the alternative embodiment shown, the cotter ring 122 includes first and second retaining flanges 140A, 140B disposed at a first cotter ring end 136 and a second cotter ring end 138. Figure 8-9 In the embodiment shown, the open ring 422 includes only one axially retaining flange 440. Return to Reference Figure 1 and Figure 2A The elastomer bushing 24 defines an inner diameter 42, an outer surface 44, a first bushing end 46, a second bushing end 48, a first axial flange 50 disposed at the first bushing end 46, and a second axial flange 52 disposed at the second bushing end 48.

[0051] At least one of the first axial flange 50 and the second axial flange 52 of the elastomer bushing 24 abuts against at least one axial retaining flange 40 of the open ring 22 to create a zero-clearance state. For example, in such Figure 1 and Figure 2A In the illustrated embodiment, the first axial flange 50 and the second axial flange 52 of the elastomer bushing 24 define outer surfaces 60, 62, which abut and engage the inner surfaces 64A, 64B of the first axial retaining flange 40A and the second axial retaining flange 40B of the cotter ring 22. Therefore, a zero-clearance state exists between the first axial flange 50 of the elastomer bushing 24 and the first axial retaining flange 40A of the cotter ring 22, and between the second axial flange 52 of the elastomer bushing 24 and the second axial retaining flange 40B of the cotter ring 22.

[0052] The zero-clearance state between the elastomer bushing 24 and the open ring 22 results in a relatively high axial rate for the bushing assembly 20. Axial rate is the resistance of the bushing assembly 20 to axial deflection. This relatively high axial rate results in minimal or zero lateral car body deflection caused by lateral loads. Specifically, the relatively high axial rate of the two bushing assemblies 20, which are part of the stabilizer bar assembly, is at least 1 kN / mm for the first millimeter of axial deflection; however, it should be understood that the axial rate value increases after the first millimeter of axial deflection. It should also be understood that minimal or zero lateral car body deflection allows the stabilizer bar 18 to exist within a compact packing space while still maintaining the torsional degree of freedom of the stabilizer bar 18. Furthermore, as in... Figure 4 As illustrated in the process flow diagram, once the bushing assembly 20 is assembled to the vehicle frame, the open clamp 28 is fastened to the stabilizer bar 18, thereby absorbing any changes in the vehicle frame construction.

[0053] Figure 2BThis is an illustration of the bushing assembly 20 as viewed from the second opening ring end 38, where the opening clip 28 has been removed. (Reference) Figure 2A and Figure 2B The open ring 22 also includes a locking feature 66 disposed at the second open ring end 38. In such a case... Figure 2B In the illustrated embodiment, the locking feature 66 is a hexagonal feature, which may be referred to as a hexagonal lock. As described below, the opening clip 28 is assembled onto the locking feature 66 located at the second opening ring end 38. The opening ring 22 is made of a material having a relatively low coefficient of friction of less than about 0.35 and a relatively high hardness. Specifically, in one embodiment, the relatively high hardness of the opening ring 22 is a flexural modulus of at least about 3.1 gigapascals. An example of a material constituting the opening ring 22 is acetal homopolymer; however, other materials such as steel and aluminum may also be used.

[0054] The elastomer bushing 24 is made of an elastomeric material (such as natural rubber or styrene-butadiene rubber (SBR)) having a hardness of about 50A to about 90A on a Shore A scale. The inner diameter 42 of the elastomer bushing engages with the outer diameter surface 34 of the open ring 22. The inner diameter 42 of the elastomer bushing 24 has a reduced coefficient of friction compared to the elastomeric material constituting it, thereby promoting torsion relative to the open ring 22. In one embodiment, the reduced coefficient of friction is achieved by placing a polytetrafluoroethylene (PFTE) liner or lubricant pouch along the inner diameter 42 of the elastomer bushing 24. See details. Figure 1 The opening 70 is set longitudinally along the elastomer bushing 24.

[0055] During the assembly of the bushing assembly 20, the cotter ring 22 is first positioned along the outer surface 54 of the stabilizer bar 18. Specifically, in one embodiment, the two halves 74 of the cotter ring 22 snap together on the stabilizer bar 18. Once the cotter ring 22 is positioned along the stabilizer bar 18, the elastomeric bushing 24 is pulled open at an opening 70 longitudinally disposed along the elastomeric bushing 24, and the elastomeric bushing 24 is positioned around the outer diameter surface 34 of the cotter ring 22. The elastomeric bushing 24 is secured in place around the outer diameter surface 34 of the cotter ring 22 by a clip 26. Specifically, the clip 26 is placed on the outer surface 44 of the elastomeric bushing 24. The clip 26 is made of a rigid material (e.g., but not limited to steel). Once the elastomeric bushing 24 is secured in place by the clip 26, the cotter clip 28 is assembled to the cotter ring 22. In one embodiment, the clip 26 is first bolted to the chassis of the vehicle and then secured to the cotter clip 28.

[0056] The opening clamp 28 is made of metal or a metal alloy. The opening clamp 28 is divided into two halves 74, which are secured by multiple mechanical fasteners 76. Figure 1(As shown) are fixed to each other. In such a way Figure 1 In the embodiment shown, the two halves 74 of the open clamp 28 are symmetrical to each other; however, it should be understood that the two halves 74 may be asymmetrical. Furthermore, although the drawings illustrate the mechanical fastener 76 as a nut and bolt fastener, other types of mechanical fasteners may also be used. Reference Figure 2A The two halves 74 of the opening clamp 28 are placed on the locking feature 66 located at the second opening ring end 38. (As in...) Figure 4 As explained in the process flow diagram shown, the mechanical fastener 76 first loosely secures the two halves 74 of the open clamp 28 to each other. Once the stabilizer bar 18 is installed and axially centered within the vehicle, the mechanical fastener 76 is then tightened.

[0057] Figure 3 This is an enlarged view of the bushing assembly 20, including the second open ring end 38 of the open ring 22 and the open clamp 28. The open clamp 28 defines an inner channel 78 that defines an inner surface 82, which is shaped to surround and engage the outer surface 54 of the stabilizer bar 18. A step 80 is located within the inner channel 78 of the open clamp 28 and is shaped to surround and engage the locking feature 66 located at the second open ring end 38. (See reference) Figure 1 and Figure 3 Once the stabilizer bar 18 is installed and axially centered on the vehicle, the mechanical fasteners 76 are tightened to compress the two halves 74 of the cotter clamp 28 against each other, thereby securing the stabilizer bar 18 to the bushing assembly 20 via mechanical interlocking. This mechanical interlocking is generated between the cotter clamp 28 and the cotter ring 22, and between the cotter clamp 28 and the stabilizer bar 18, and is caused by the tension in the mechanical fasteners 76 after tightening.

[0058] Figure 4 This is a process flow diagram illustrating a method 200 for assembling the bushing assembly 20 to a vehicle frame. See details. Figure 1 , Figure 2A , Figure 2B and Figure 4 Method 200 begins at block 202. In block 202, the open ring 22 is positioned along the outer surface 54 of the stabilizer bar 18. Method 200 can then proceed to block 204.

[0059] In block 204, the elastomeric bushing 24 is placed around the outer surface 44 of the open ring 22. The elastomeric bushing 24 is secured in place around the outer surface 44 of the open ring 22 by a clip 26. Method 200 can then proceed to block 206.

[0060] In block 206, the two halves 74 of the opening clamp 28 are placed on the locking feature 66 located at the second opening ring end 38, and the mechanical fastener 76 first loosely secures the two halves 74 of the opening clamp 28 to each other. Method 200 can then proceed to block 208.

[0061] In block 208, the stabilizer bar assembly 10 is axially centered using a measuring clamp or other device, and then passed through the hole 16 of the clamp 26 ( Figure 1 The received fasteners (not shown) are secured to the vehicle frame (not shown), wherein each of the two bushing assemblies 20 corresponds to the left and right sides of the vehicle. Method 200 can then proceed to block 210.

[0062] In block 210, mechanical fasteners 76 are tightened to press the two halves 74 of the open clamp 28 against each other. The compression between the two halves 74 of the open clamp 28 creates a mechanical interlock between the open clamp 28 and the open ring 22, and between the open clamp 28 and the stabilizer bar 18. It should be understood that because the two halves 74 of the open clamp 28 are compressed against each other after the bushing assembly 20 is assembled to the vehicle frame, any changes in frame construction are absorbed. Method 200 can then terminate.

[0063] Now for reference Figure 5 and Figure 6 An alternative embodiment of the bushing assembly 120 is shown. In such a way... Figure 5 In the illustrated embodiment, the bushing assembly 20 includes an open ring 122, an elastomeric bushing 124, and a clip 126. The open ring 122 defines a channel 130 shaped to surround the stabilizer bar 18, an inner diameter surface 132, an outer diameter surface 134, a first open ring end 136, a second open ring end 138, a first axial retaining flange 140A, and a second axial retaining flange 140B. The first axial retaining flange 140A is disposed at the first open ring end 136, and the second axial retaining flange 140B is disposed at the second open ring end 138. Figure 5-6 The bushing assembly 120 shown does not include Figure 1 and Figure 2A , Figure 2B The shown is an open clamp 28 or a mechanical fastener 76. Alternatively, refer to... Figure 6 The adhesive layer 156 is disposed along the inner diameter surface 132 of the channel 130 of the open ring 122. The adhesive layer 156 includes an adhesive that bonds or adheres to the outer surface 54 of the stabilizer bar 18. An example of an adhesive that can be used for the adhesive layer 156 is an epoxy resin adhesive.

[0064] Figure 7 It shows Figure 5-6 The process flow diagram for assembling bushing assembly 120 is shown in the figure. See also: Figure 5-7 Method 300 begins at block 302. In block 302, adhesive layer 156 is applied along inner diameter surface 132, which is disposed along channel 130 of open ring 122. Method 300 can then proceed to block 304.

[0065] In block 304, the open ring 122 is positioned along the outer surface 54 of the stabilizer bar 18. Then method 300 can proceed to block 306.

[0066] In block 306, the elastomeric bushing 124 is placed around the outer surface 144 of the open ring 122. The elastomeric bushing 124 is secured in place around the outer surface 144 of the open ring 122 by a clip 126. Method 300 can then proceed to block 308.

[0067] In block 308, the stabilizer bar assembly 110 is axially centered using a measuring fixture or other means and then secured to the vehicle frame, wherein each of the bushing assemblies 120 corresponds to the left and right sides of the vehicle. It should be understood that the stabilizer bar assembly 110 is secured to the vehicle frame before the adhesive layer 156 is completely dry or cured. Method 300 can then terminate.

[0068] Figure 8-9 Another embodiment of the bushing assembly 420 is shown. The bushing assembly 420 includes an open ring 422, an elastomeric bushing 424, a clip 426, and an open clip 428. The open ring 422 defines a channel 430 shaped to surround the stabilizer bar 18, an inner diameter surface 432, an outer diameter surface 434, a first open ring end 436, a second open ring end 438, and a single axial retaining flange 440. In such a way... Figure 8-9 In the embodiment shown, the axial retaining flange 440 is disposed at the second open ring end 438 of the open ring 422, between the elastomer bushing 424 and the open clamp 428.

[0069] like Figure 9 As seen, the open ring 422 does not include, for example... Figure 1 , Figure 2A , Figure 2B and Figure 3 The locking feature 66 of the embodiment shown is located at the second open ring end 438. Therefore, when the mechanical fastener 478 for the open clamp 428 is tightened, no mechanical interlock is generated between the open clamp 428 and the open ring 422. However, a mechanical interlock is achieved between the open clamp 428 and the stabilizer bar 18. The open ring 422 includes opposing end faces 490. In such... Figure 9In the illustrated embodiment, one end face 490 of the cotter ring 422 abuts against the end face 492 of the cotter clamp 428, which restricts axial movement in the first direction D1. However, in this embodiment, an axial retaining flange 440 is disposed at the first cotter ring end 436, and conversely, the axial retaining flange 440 abuts against the end face 490 of the cotter clamp 428, thereby restricting axial movement in the second direction D2, opposite to the first direction D1. Since the stabilizer bar assembly 410 includes two bushing assemblies 420, one of the bushing assemblies 420 can restrict axial movement in the first direction D1, while the remaining bushing assembly 420 restricts axial movement in the second direction D2. This, in turn, allows the stabilizer bar assembly 410 to respond to both left-side and right-side load road conditions as the vehicle moves.

[0070] Referring generally to the accompanying drawings, the disclosed bushing assembly offers various technical effects and benefits. Specifically, the zero-clearance state between the elastomeric bushing and the cuff ring results in a relatively high axial ratio for the bushing assembly, leading to minimal or zero lateral car body deflection from lateral loads. Minimal or zero lateral car body deflection allows the stabilizer bar to exist within a compact packing space while maintaining the stabilizer bar's torsional degree of freedom. Furthermore, in embodiments where the cuff clamp and cuff ring are mechanically interlocked, compression between the two halves of the cuff clamp absorbs any changes in frame construction.

[0071] The descriptions in this disclosure are merely exemplary in nature, and variations thereof without departing from the spirit and scope of this disclosure are intended to fall within its scope. Such variations should not be considered as departing from the spirit and scope of this disclosure.

Claims

1. A bushing assembly for a stabilizer bar in a vehicle, the bushing assembly comprising: An open ring, the open ring defining a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, and at least one axial retaining flange disposed at the first open ring end or the second open ring end, wherein the open ring includes a locking feature disposed at the second open ring end; An elastomeric bushing, the elastomeric bushing defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein the inner diameter of the elastomeric bushing engages with the outer diameter surface of the open ring, and at least one of the first axial flange and the second axial flange abuts against at least one axial retaining flange of the open ring to create a zero-clearance state. A clip, disposed on the outer diameter of the elastomeric bushing, wherein the clip secures the bushing assembly to the vehicle. The opening clamp is divided into two halves, wherein the opening clamp is disposed on a locking feature located at the second opening ring end of the opening ring, wherein the opening clamp defines an inner channel having an inner surface shaped to surround and engage the outer surface of the stabilizing bar.

2. The bushing assembly as claimed in claim 1, wherein, The inner diameter of the elastomeric bushing has a reduced coefficient of friction compared to the elastomeric material constituting the elastomeric bushing.

3. The bushing assembly as claimed in claim 2, wherein, The reduced coefficient of friction is generated by a polytetrafluoroethylene (PFTE) lining or lubricant bag arranged around the inner diameter of the elastomer bushing.

4. The bushing assembly as claimed in claim 1, wherein, The open ring includes a second retaining flange offset from the end of the second open ring.

5. The bushing assembly as claimed in claim 1, wherein, The step located within the inner channel of the opening clamp is shaped to surround and engage the locking feature located at the end of the second opening ring.

6. The bushing assembly as claimed in claim 1, wherein, The open ring is made of a material with a coefficient of friction of less than 0.35 and a flexural modulus of at least 3.1 gigapascals.

7. The bushing assembly as claimed in claim 1, wherein, The elastomeric bushing is made of an elastomeric material having a hardness of 50A to 90A on a Shore A scale.

8. The bushing assembly as claimed in claim 1, wherein, The open ring includes a second retaining flange disposed at the end of the second open ring.

9. The bushing assembly of claim 8, further comprising an open clamp divided into two halves, wherein the end face of the open ring abuts against the end face of the open clamp.

10. The bushing assembly of claim 1, further comprising an adhesive layer disposed along the inner diameter surface of the channel of the open ring.

11. The bushing assembly of claim 10, wherein, The adhesive layer comprises an adhesive that bonds or adheres to the outer surface of the stabilizer bar.

12. A method for assembling a stabilizer bar assembly, including a bushing assembly, to a vehicle frame, the method comprising: A cotter ring is positioned along the outer surface of a stabilizer bar, wherein the cotter ring defines a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first cotter ring end, a second cotter ring end, and at least one axially retaining flange disposed at the first cotter ring end or the second cotter ring end, and wherein the cotter ring includes a locking feature disposed at the second cotter ring end; and An elastomer bushing is secured around the outer surface of the open ring by a clip, wherein the elastomer bushing defines a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein at least one of the first axial flange and the second axial flange abuts against the at least one axial retaining flange of the open ring to create a zero-gap state. The two halves of the opening clamp are placed on the locking feature located at the second opening ring end of the opening ring, wherein the opening clamp defines an inner channel having an inner surface shaped to surround and engage the outer surface of the stabilizing bar.

13. The method of claim 12, further comprising: The two halves of the opening clamp are loosely secured to each other by mechanical fasteners.

14. The method of claim 13, further comprising: The stabilizer bar assembly is axially centered. as well as The stabilizer bar assembly is secured to the vehicle frame using the clips.

15. The method of claim 14, further comprising: Tighten the mechanical fasteners to press the two halves of the open clamp together.

16. A bushing assembly for a stabilizer bar in a vehicle, the bushing assembly comprising: An open ring, the open ring defining a channel engaging with the outer surface of the stabilizer bar, an outer diameter surface, a first open ring end, a second open ring end, a locking feature provided at the second open ring end, and at least one axial retaining flange provided at the first open ring end or the second open ring end; An elastomeric bushing, the elastomeric bushing defining an inner diameter, an outer diameter, a first bushing end, a second bushing end, a first axial flange disposed at the first bushing end, and a second axial flange disposed at the second bushing end, wherein the inner diameter of the elastomeric bushing engages with the outer diameter surface of the open ring, and at least one of the first axial flange and the second axial flange abuts against the at least one axial retaining flange of the open ring to create a zero-clearance state. A clip is disposed on the outer diameter of the elastomer bushing, wherein the clip secures the bushing assembly to the vehicle; and An opening clamp is divided into two halves, wherein the opening clamp is disposed on the locking feature located at the second opening ring end of the opening ring, wherein the opening clamp defines an inner channel having an inner surface shaped to surround and engage the outer surface of the stabilizing bar, and wherein a step located within the inner channel of the opening clamp is shaped to surround and engage the locking feature located at the second opening ring end. as well as Multiple mechanical fasteners secure two halves of the open clamp together, wherein a mechanical interlock is created between the open clamp and the open ring, the mechanical interlock being caused by the tension of the multiple mechanical fasteners during tightening.

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