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An Integrated Roll And Bump Stopper Assembly For Anti Roll Control Of A Vehicle

Abstract: Present subject matter relates to an integrated roll and bump stopper assembly (21) to restrict the roll of vehicle without using anti-roll bar (11). The integrated roll and bump stopper assembly (21) is mounted on the vehicle chassis member (13) and comprises of an integrated roll and bump stopper plate (30) having first portion (30a) abutting to a bottom surface (28) of an intermediate member (25), second portion (30c) offset from the bottom surface (28) with the help of a spacer plate (31) and an angled transition portion (30b) formed between the first and second portions (30a, 30c). The integrated roll and bump stopper plate (30) along with a rubber buffer (15) mounted of leaf spring assembly (16) is configured to restrict maximum vertical and lateral movement of the axle by for reducing roll of axle without using an anti-roll bar (11) assembly.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
26 November 2021
Publication Number
22/2023
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
ip@legasis.in
Parent Application

Applicants

Tata Motors Limited
Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400001, Maharashtra, India

Inventors

1. UTTEKAR, Sachin Shankar
Tata Motors Limited, Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai - 400001, Maharashtra, India
2. DEORE, Yogesh Ramesh
Tata Motors Limited, Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai - 400001, Maharashtra, India
3. PANDHARE, Vinay Ramakant
Tata Motors Limited, Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai - 400001, Maharashtra, India
4. P, Premlal
Tata Motors Limited, Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai - 400001, Maharashtra, India
5. MEHENDALE, Ravindra Bhaskar
Tata Motors Limited, Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai - 400001, Maharashtra, India

Specification

Claims:
1. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle comprising:
a L-shaped upper bracket (22) configured to be mounted on vehicle chassis member (13) by a fastening means;
an intermediate member (25) configured to be mounted on the L-shaped upper bracket (22);
an integrated roll and bump stopper plate (30) configured with a predefined profile for mounting on the bottom of the intermediate member (25); and
a spacer plate (31) configured to be mounted between the intermediate member (25) and the integrated roll and bump stopper plate (30).

2. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 1, wherein said L-shaped upper bracket (22) is configured to have a first vertical section (23) to be fastened to the vehicle chassis member (13) and a second horizontal section (24) to be mounted on the intermediate member (25).

3. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 1, wherein said intermediate member (25) is configured to be formed in a U-shaped or C-shaped bracket or O-shaped section or quadrilateral section.

4. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 1, wherein said integrated roll and bump stopper plate (30) is configured to have a first portion (30a) abutting to the bottom surface of the intermediate member (25), a second portion (30c) offset from the bottom surface of the intermediate member (25) and an angled transition portion (30b) formed between the first portion (30a) and second portion(30c) of the intermediate member (25).

5. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 2, wherein a reinforcing plate (29), parallel to vertical sides (26) of the intermediate member (25), is configured to be mounted between the horizontal bottom section (28) of the intermediate member (25) at one end and to the second horizontal section (24) of the L-shaped upper bracket (22) at another end.

6. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 4, wherein the spacer plate (31) is configured to be sandwiched between the second portion (30c) and a horizontal bottom section (28) of the intermediate member (25) to maintain the offset distance of the second portion (30c).

7. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 4, wherein the second offset portion (30c) is configured to be biased towards vehicle outer side to restrict vertical as well as lateral movement of the vehicle axle by restricting the movement of a rubber buffer (15) mounted on top of a leaf spring assembly (16).

8. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 4, wherein the angled transition portion (30b) of the integrated roll and bump stopper plate (30) is configured for compressing a portion of rubber buffer (15) upon contact to form a rigid portion of the rubber buffer for restricting further the vertical and lateral movement of the rubber buffer (15) thereafter.

9. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 4, wherein the predefined profile of the integrated roll and bump stopper plate (30) is configured to ensure partial contact between the rubber buffer (15) with the first portion (30a) and/or the angled transition portion (30b) of the integrated roll and bump stopper plate (30).

10. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 1, wherein the vertical axis of the integrated roll and bump stopper assembly (21) is configured to be aligned with that of a rubber buffer (15).

11. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 1, wherein the angled transition portion (30b) of the integrated roll and bump stopper plate (30) is configured with an effective length (41) equivalent to half of the upper portion dimension (43) of the rubber buffer.

12. An integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle as claimed in claim 1, wherein the second portion (30c) of the integrated roll and bump stopper plate (30) is configured with an offset distance (40) equivalent to 1/3rd of the unsupported height (42) the rubber buffer (15) above a guide plate (17).
, Description:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION

(See Section 10 and Rule 13)

Title of invention:
AN INTEGRATED ROLL AND BUMP STOPPER ASSEMBLY FOR ANTI-ROLL CONTROL OF A VEHICLE

Applicant:
Tata Motors Limited
A company Incorporated in India under the Companies Act, 1956
Having address:
Bombay House, 24 Homi Mody Street, Hutatma Chowk,
Mumbai 400001, Maharashtra, India

The following specification particularly describes the invention and the manner in which it is to be performed.
TECHNICAL FIELD OF THE PRESENT INVENTION
[001] The present subject matter described herein, in general relates to a system for anti-roll control of a vehicle. More particularly the subject matter relates to an integrated roll and bump stopper assembly to restrict the roll of vehicle without using anti-roll bar for improving the handling characteristics without affecting the ride quality and stability of the vehicle.
BACKGROUND OF THE PRESENT INVENTION
[002] In a vehicle, it is important to improve vehicle handling without compromising the ride quality. During turning/cornering of the vehicle, the vehicle sprung mass starts shifting opposite to the turning direction due to centrifugal forces and vehicle body roll increases, impacting the vehicle handling characteristics. This may cause instability of vehicle and sometimes toppling of the vehicle at high-speed manoeuvre.
[003] The vehicle handling can be improved by having high roll stiffness of vehicle suspension. However, increasing the suspension stiffness results in decreased ride quality. Hence, a stabilizer/anti-roll bar is used in the vehicle suspension to improve stability and handling characteristics by increasing total roll stiffness without affecting ride quality of the vehicle. The anti-roll bar's torsion stiffness/ roll stiffness controls its ability to reduce body roll. An anti-roll bar improves the handling of a vehicle by increasing stability during cornering or evasive manoeuvres. Conventional anti-roll bar system (10) is shown in Figure 1, wherein an anti-roll bar (11) connects the right and left suspension systems (12) together to resist roll of the vehicle which occurs during cornering or due to road irregularities.
[004] As per one arrangement of conventional anti-roll control system, a bump stopper bracket (14) and a rubber buffer (15) arrangement are used to limit the maximum vertical travel of the leaf spring assembly (16) or vehicle axle. This arrangement comprises the rubber buffer (15) mounted on top of the leaf spring assembly (16) as shown in Figure 2. Figure 2A and Figure 2B shows isometric and sectional views of the rubber buffer (15) respectively whereas figure 2C and figure 2D shows isometric and sectional views of the guide plate (17) respectively. The rubber buffer (15) is mounted inside a pocket (18) of the guide plate (17). The pocket (18) of guide plate (17) has inner tapered surface to locate the rubber buffer (15) and to restrict the movement of the rubber buffer (15) from its position. The guide plate (17) is fastened on the top of the leaf spring assembly (16) with the help of U-bolts (19).
[005] Further, as shown in Figure 3, a bump stopper bracket (14) is mounted on the vehicle chassis member (13) and the rubber buffer (15) is mounted on the leaf spring assembly (16) of the suspension system (12). When a wheel goes in a bump state, the corresponding rubber buffer (15) touches the bump stopper bracket (14) and thus the bump stopper bracket (14) restricts the vertical travel of the leaf spring assembly (16) beyond a predefined limit and increases the spring life during vehicle operation. The combination of the bump stopper bracket (14) and the rubber buffer (15) together restrict the vertical movement as well as the rollover of the vehicle.
[006] However, the stabilizer/anti-roll bar according to the conventional system, is usually made of steel and its addition to suspension system comes with a penalty of additional weight of approximately 20 to 40 Kgs. Moreover, it also requires a large packaging space to mount the entire stabilizer/anti-roll bar assembly. This, addition in kerb weight decreases the payload capacity of the vehicle. Therefore, there is a need to provide an economical mechanism to increase the roll stiffness without affecting ride quality of vehicle.

OBJECTS OF THE PRESENT INVENTION
[007] Main object of the invention is to provide an efficient anti-roll control system for a vehicle.
[008] Another object of the invention is to provide an integrated roll and bump stopper assembly to restrict the roll of vehicle without using stabilizer/anti-roll bar assembly.
[009] Yet another object of the invention is to provide an integrated roll and bump stopper assembly to eliminate the use of anti-roll bar assembly for improving the handling characteristics without affecting the ride quality and stability of the vehicle.
[0010] Yet another object of the invention is to reduce weight of vehicle suspension system in turn increasing the payload capacity of the vehicle by eliminating the anti-roll bar without affecting the vehicle handling, stability and ride quality.
[0011] Yet another object of the invention is to reduce weight of vehicle suspension system by eliminating the anti-roll bar, in turn increasing overall efficiency of the vehicle.
[0012] Yet another object of the invention is to reduce the complicated design of the roll and bump stopper assembly.
[0013] Yet another object of the invention is to provide an integrated roll and bump stopper assembly having simple constructional features for easy manufacturing and to reduce the number of components of the vehicle suspension system due to elimination of anti-roll bar assembly.
[0014] Yet another object of the invention is to provide an integrated roll and bump stopper assembly to reduce manufacturing and maintenance costs of the vehicle suspension system, and to reduce the noise from suspension system as the anti-roll bar and all bushings associated with it are removed.

SUMMARY OF THE PRESENT INVENTION
[0015] Before the present system is described, it is to be understood that this application is not limited to the particular machine or an apparatus, and methodologies described, as there can be multiple possible embodiments that are not expressly illustrated in the present disclosure. It is also to be understood that the terminologies used in the description is for the purpose of describing the particular version or embodiment only and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to an integrated roll and bump stopper assembly for anti-roll control of a vehicle and the aspects are further elaborated below in the detailed application description. This summary is not intended to identify essential features of the proposed subject matter nor is it intended for use in determining or limiting the scope of the proposed subject matter.
[0016] The present subject matter discloses an integrated roll and bump stopper assembly. The integrated roll and bump stopper assembly comprises an L-shaped upper bracket configured to have a first vertical section having holes for mounting the integrated roll and bump stopper assembly on the vehicle chassis member with the help of fastening means like bolts, screws, nut-bolts and rivets etc., or by welding and a second horizontal section for mounting the L-shaped upper bracket on an intermediate member of the integrated roll and bump stopper assembly. The intermediate member can be formed by a U-shaped bracket, C-shaped bracket, O-shaped section or quadrilateral section etc., and is configured to have two parallel vertical sides connected and spaced apart by a horizontal bottom section formed between the vertical sides. The free ends of the vertical sides of the intermediate member are configured to be fastened to the bottom surface of the second horizontal section of the L-shaped upper bracket. A reinforcing plate, parallel to the vertical sides of the intermediate member, is configured to be mounted between the two vertical sides of the intermediate member wherein, one end of the reinforcing plate is fastened to the horizontal bottom section of the intermediate member and another end is fastened to the bottom surface of the second horizontal section of the L-shaped upper bracket. An integrated roll and bump stopper plate is configured to be mounted to the horizontal bottom section of the intermediate member wherein, at least a first portion, from one end of the integrated roll and bump stopper plate is abutting with the horizontal bottom section of the intermediate member and a second portion of the integrated roll and bump stopper plate is offset from the horizontal bottom section of the intermediate member with the help of a spacer plate. The integrated roll and bump stopper plate is further configured to have an angled transition portion formed between the first portion and second offset portion. The integrated roll and bump stopper assembly is mounted on the vehicle chassis member in an orientation such that the second offset portion of the integrated roll and bump stopper plate is biased towards vehicle outer side to control the axle roll.
[0017] The present subject matter further discloses a situation where one of the wheels of the vehicle is in bump condition. When the wheel is in bump condition, the suspension members corresponding to that wheel travels upwards as well as the axle experiences the roll due to its lateral movement. With upward travel of the suspension members i.e., leaf spring assembly, a rubber buffer mounted on the leaf spring assembly touches the integrated roll and bump stopper plate of the integrated roll and bump stopper assembly. The profiles of the integrated roll and bump stopper plate and the rubber buffer are configured in such a way that it ensures partial contact between the rubber buffer with the first portion and/or the angled transition portion of the integrated roll and bump stopper plate. Since, the angled transition portion is at an angle with respect to the first portion, the rubber buffer portion facing the angular transition portion further compresses to give the rigidity to the rubber buffer thereby restricting the further lateral movement of axle. Thus, the integrated roll and bump stopper assembly (21) not only restricts the vertical travel of the leaf spring assembly or axle but also restricts the lateral movement ‘X’ of the axle to reduce the vehicle level roll rate and increase the vehicle handling and stability. The effective length of the angled transition portion can be configured to be equivalent to half of the upper portion dimension of the rubber buffer. Moreover, the offset distance of the second offset portion of the integrated roll and bump stopper plate can be configured to be equivalent to 1/3rd of the unsupported height of the rubber buffer above the guide plate.

STATEMENT OF THE PRESENT INVENTION
[0018] The present subject matter discloses an integrated roll and bump stopper assembly for anti-roll control of a vehicle. The integrated roll and bump stopper assembly comprises an L-shaped upper bracket, an intermediate member, an integrated roll and bump stopper plate, and a spacer plate. The L-shaped upper bracket is configured to be mounted on vehicle chassis member by a fastening means. The intermediate member is configured to be mounted on the L-shaped upper bracket. The integrated roll and bump stopper plate is configured with a predefined profile for mounting on the bottom of the intermediate member. The spacer plate configured to be mounted between the intermediate member and the integrated roll and bump stopper plate.
[0019] The L-shaped upper bracket is configured to have a first vertical section to be fastened to the vehicle chassis member and a second horizontal section to be mounted on the intermediate member. The intermediate member is configured to be formed in a U-shaped or C-shaped bracket or O-shaped section or quadrilateral section. The integrated roll and bump stopper plate is configured to have a first portion abutting to the bottom surface of the intermediate member, a second portion offset from the bottom surface of the intermediate member and an angled transition portion formed between the first portion and second portion of the intermediate member. A reinforcing plate, parallel to vertical sides of the intermediate member, is configured to be mounted between the horizontal bottom section of the intermediate member at one end and to the second horizontal section of the L-shaped upper bracket at another end. The spacer plate is configured to be sandwiched between the second portion and a horizontal bottom section of the intermediate member to maintain the offset distance of the second portion. The second offset portion is configured to be biased towards vehicle outer side to restrict vertical as well as lateral movement of the vehicle axle by restricting the movement of a rubber buffer mounted on top of a leaf spring assembly. The angled transition portion of the integrated roll and bump stopper plate is configured for compressing a portion of rubber buffer upon contact to form a rigid portion of the rubber buffer for restricting further the vertical and lateral movement of the rubber buffer thereafter. The predefined profile of the integrated roll and bump stopper plate is configured to ensure partial contact between the rubber buffer with the first portion and/or the angled transition portion of the integrated roll and bump stopper plate. The vertical axis of the integrated roll and bump stopper assembly is configured to be aligned with that of a rubber buffer. The angled transition portion of the integrated roll and bump stopper plate is configured with an effective length equivalent to half of the upper portion dimension of the rubber buffer. The second portion of the integrated roll and bump stopper plate is configured with an offset distance equivalent to 1/3rd of the unsupported height the rubber buffer above a guide plate.

BRIEF DESCRIPTION OF DRAWINGS
[0020] The foregoing summary, as well as the following detailed description of embodiment, is better understood when read in conjunction with the appended drawing. For the purpose of illustrating the disclosure, there is shown in the present document example constructions of the disclosure, however, the disclosure is not limited to the specific methods and apparatus disclosed in the document and the drawing.
[0021] The detailed description is described with reference to the accompanying figure. The same numbers are used throughout the drawing to refer like features and components.
[0022] Figure 1 illustrates an exemplary conventional anti-roll bar setup on a vehicle (Prior art).
[0023] Figure 2 illustrates a sectional view of a rubber buffer and guide plate mounted on top of the leaf spring assembly forming a part of the anti-roll bar setup (Prior art).
[0024] Figure 2A illustrates an isometric view of the conventional rubber buffer (Prior art).
[0025] Figure 2B illustrates a sectional view of the conventional rubber buffer (Prior art).
[0026] Figure 2C illustrates an isometric view of the conventional guide plate (Prior art).
[0027] Figure 2D illustrates a sectional view of the conventional guide plate (Prior art).
[0028] Figure 3 illustrates a schematic view of the conventional bump stopper bracket and the rubber buffer mounted on vehicle when one of the wheels is in bump state (Prior Art).
[0029] Figure 4 illustrates an anti-roll control system in accordance to the present disclosure.
[0030] Figure 5A illustrates an isometric view of the integrated roll and bump stopper assembly, in accordance to the present disclosure.
[0031] Figure 5B illustrates a front view of the integrated roll and bump stopper assembly, in accordance to the present disclosure.
[0032] Figure 5C illustrates a sectional view of the integrated roll and bump stopper assembly, in accordance to the present disclosure.
[0033] Figure 6 illustrates the integrated roll and bump stopper assembly and the rubber buffer assembly, in accordance to the present disclosure.
[0034] Figure 7 illustrates a sectional view of an integrated roll and bump stopper assembly mounted on vehicle chassis and the rubber buffer mounted on the leaf spring assembly, in accordance to the present disclosure.
[0035] Figure 8 illustrates a sectional view of the integrated roll and bump stopper assembly when the corresponding wheel is in bump state, in accordance to the present disclosure.
[0036] Figures depict various embodiments of the present disclosure for purpose of illustration only. Only skilled in the art will readily recognize from the following discussion that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0037] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words “comprising”, “having”, and “including,” and other forms thereof, are intended to be equivalent in meaning and be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. Although any systems and methods similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, systems and methods are now described. The disclosed embodiments are merely exemplary of the disclosure, which may be embodied in various forms.
[0038] Various modification to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to another embodiment. However, one of ordinary skill in the art will readily recognize that the present disclosure is not intended to be limited to the embodiments illustrated but is to be accorded the widest scope consistent with the principles and features described herein.
[0039] The disclosure herein provides an integrated roll and bump stopper assembly (21) for anti-roll control of a vehicle. Figure 4 illustrates an anti-roll control system (20) according to the present invention. The system comprises the integrated roll and bump stopper assembly (21) mounted on vehicle chassis member (13). A rubber buffer (15) is mounted on the top of the leaf spring assembly (16).
[0040] Figures 5A, 5B and 5C show the isometric, front and sectional views respectively of the integrated roll and bump stopper assembly (21) according to the present invention. The integrated roll and bump stopper assembly (21) comprises a L-shaped upper bracket (22) having a first vertical section (23) and a second horizontal section (24). The first vertical section (23) of the L-shaped upper bracket (22) comprises plurality of holes (27) for mounting the integrated roll and bump stopper assembly (21) on the vehicle chassis member (13) (see fig. 4) with the help of fastening means like bolts, screws, nut-bolts and rivets etc. An alternate fastening means like welding etc. can be used for mounting the integrated roll and bump stopper assembly (21) on the vehicle chassis member (13). The integrated roll and bump stopper assembly (21) further comprises an intermediate member (25) having two parallel vertical sides (26) connected and spaced apart by a horizontal bottom section (28) formed between the vertical sides (26). The free ends of the vertical sides (26) are mounted to the bottom surface of the second horizontal section (24) of the L-shaped upper bracket (22). Further, a reinforcing plate (29) is connected to the inner surface of the horizontal bottom section (28) of the intermediate member (25) at one end and to the bottom surface of the second horizontal section (24) of the L-shaped upper bracket (22) at another end.
[0041] As seen in Figures 5A, 5B and 5C, an integrated roll and bump stopper plate (30) is configured to be mounted to the horizontal bottom section (28) of the intermediate member (25). At least a first portion of the integrated roll and bump stopper plate (30) is abutting to the horizontal bottom section (28) of the intermediate member (25) and second portion of the integrated roll and bump stopper plate (30) is offset from the horizontal bottom section (28) of the U-shaped shell (25) with the help of a spacer plate (31).
[0042] As shown in Figure 6, the integrated roll and bump stopper plate (30) has first portion (30a) mounted/abutting to the horizontal bottom section (28) of the intermediate member (25), second portion (30c) offset from the horizontal bottom section (28) of the intermediate member (25) and an angled transition portion (30b) formed between the first portion (30a) and second portion (30c). The spacer plate (31) is configured to be sandwiched between the second offset portion (30c) and the horizontal bottom section (28) of the intermediate member (25) to keep the second portion (30c) of the integrated roll and bump stopper plate (30) in offset position and to prevent the angled transition portion (30b) from straightening/deforming under influence of any external forces. Further, the vertical axis of the integrated roll and bump stopper assembly (21) and that of the rubber buffer (15) are aligned.
[0043] The dimensions and the profile of the integrated roll and bump stopper plate (30) is determined based on the dimensions of the rubber buffer (15) in order to achieve desired results. For example, in reference to Figure 6, the offset distance (40) can be 1/3rd of the unsupported height (42) of the rubber buffer (15) above the guide plate (17). Further, the effective length (41) of the angled transition portion (30b) of the integrated roll and bump stopper plate (30) can be half of the upper portion dimension (43) of the rubber buffer (15).
[0044] Figure 7 shows a situation where a wheel (44) is in bump state and the opposite wheel (45) on the axle is in rebound state. At this stage, whole axle along with the leaf spring assembly (16) and rubber buffer (15) rotates about a roll centre ‘O’, which causes lateral movement of the axle in rotating direction (shown by an arrow in Figure 7). The, axle shifts towards bump side of vehicle. So, the leaf spring assembly (16) of the suspension system 12, associated with the wheel in bump (44) travel in upward direction as shown in Figure 7. In addition to this upward travel, the axle also moves in a lateral direction, denoted by ‘X’ in figure 7, increasing roll of the axle and vehicle body. With optimized ride gap, when axle rotates, the rubber buffer (15) comes in contact with profile of the integrated roll and bump stopper assembly (21) having the second offset portion (30c) of the integrated roll and bump stopper plate (30) biased towards vehicle outer side to avoid further lateral movement of the axle.
[0045] As shown in Figure 8, when the rubber buffer (15) touches the integrated roll and bump stopper plate (30), the rubber buffer (15) contacts mainly with the first portion (30a) and the angular transition portion (30b) of the integrated roll and bump stopper plate (30). Since, the transition portion (30b) is at an angle with respect to the first portion (30a), the rubber buffer portion facing the angular transition portion (30b) further compresses to give the rigidity/stiffness to the rubber buffer thereby restricting the further lateral movement of axle. Thus, the integrated roll and bump stopper assembly (21) not only restricts the maximum vertical travel of the leaf spring assembly (16) or axle but also restricts the lateral movement ‘X’ of the axle beyond a predefined limit to reduce the vehicle level roll rate and increase the vehicle handling and stability.
[0046] Exemplary embodiments discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, these advantages may include those provided by the following features.
[0047] Some embodiments provide an efficient anti-roll control system for a vehicle.
[0048] Some embodiments provide an integrated roll and bump stopper assembly to restrict the roll of axle or vehicle without using an anti-roll bar.
[0049] Some embodiments provide an integrated roll and bump stopper assembly to eliminate the use of anti-roll bar assembly for improving the handling characteristics without affecting the ride quality and stability of the vehicle
[0050] Some embodiments provide an integrated roll and bump stopper assembly to reduce weight of vehicle suspension system in turn increasing the payload capacity of the vehicle by eliminating the anti-roll bar without affecting the vehicle handling, stability and ride quality
[0051] Some embodiments provide an integrated roll and bump stopper assembly to reduce weight of vehicle suspension system by eliminating the anti-roll bar, in turn increasing overall efficiency of the vehicle.
[0052] Some embodiments provide a simple design of the integrated roll and bump stopper assembly to eliminate the complicated design of anti-roll bar assembly.
[0053] Some embodiments provide an integrated roll and bump stopper assembly having simple constructional features for easy manufacturing and to reduce the number of components of the vehicle suspension system due to elimination of anti-roll bar assembly.
[0054] Some embodiments provide an integrated roll and bump stopper assembly to reduce manufacturing and maintenance costs of the vehicle suspension system, and to reduce the noise from suspension system as the anti-roll bar and all bushings associated with it are removed.
[0055] Although implementations for an integrated roll and bump stopper assembly have been described in language specific to structural features, it is to be understood that the appended claims are not necessarily limited to the specific features described. Rather, the specific features are disclosed as examples of implementation for the parking brake system.
[0056] Figures 1-8 are now described using the reference numbers stated in the below table.
Element Description Reference Numeral
Conventional anti-roll bar system 10
An anti-roll bar 11
Suspension system 12
Vehicle chassis member 13
A bump stopper bracket 14
A rubber buffer 15
Leaf spring assembly 16
A guide plate 17
A pocket inside the guide plate 18
U-Bolts 19
An anti-roll control system 20
An integrated roll and bump stopper assembly 21
A L-shaped upper bracket 22
First vertical section of the L-shaped upper bracket 23
Second horizontal section of the L-shaped upper bracket 24
An intermediate member 25
Legs of the intermediate member 26
Holes 27
Horizontal bottom section of the intermediate member 28
A reinforcing plate 29
An integrated roll and bump stopper plate 30
A first portion of the integrated roll and bump stopper plate 30a
An angled transition portion of the integrated roll and bump stopper plate 30b
A second portion of the integrated roll and bump stopper plate 30c
A spacer plate 31
Offset distance 40
Effective length of the angled transition portion 41
Height of the rubber buffer above the guide plate 42
Dimension of the upper portion of the rubber buffer 43
A wheel in bump 44
A wheel in rebound 45

Documents

Application Documents

# Name Date
1 202121054877-STATEMENT OF UNDERTAKING (FORM 3) [26-11-2021(online)].pdf 2021-11-26
2 202121054877-REQUEST FOR EXAMINATION (FORM-18) [26-11-2021(online)].pdf 2021-11-26
3 202121054877-FORM 18 [26-11-2021(online)].pdf 2021-11-26
4 202121054877-FORM 1 [26-11-2021(online)].pdf 2021-11-26
5 202121054877-FIGURE OF ABSTRACT [26-11-2021(online)].jpg 2021-11-26
6 202121054877-DRAWINGS [26-11-2021(online)].pdf 2021-11-26
7 202121054877-DECLARATION OF INVENTORSHIP (FORM 5) [26-11-2021(online)].pdf 2021-11-26
8 202121054877-COMPLETE SPECIFICATION [26-11-2021(online)].pdf 2021-11-26
9 Abstract1.jpg 2022-01-04
10 202121054877-FORM-26 [22-02-2022(online)].pdf 2022-02-22
11 202121054877-Proof of Right [08-04-2022(online)].pdf 2022-04-08
12 202121054877-FER.pdf 2025-06-24
13 202121054877-FORM 3 [12-07-2025(online)].pdf 2025-07-12

Search Strategy

1 202121054877_SearchStrategyNew_E_202121054877_SearchStrategyE_19-06-2025.pdf