Field of the invention
The present invention relates to a rear suspension, more particularly it relates to a rear suspension having bump stop integrated with nut plate.
Background of the invention
Rear suspensions Bump stop has two functions viz. bottom cushioning and to avoid metal to metal hitting during full stroke which creates noise.
A rubber bump stop is a compressible suspension component designed to prevent metal to metal contact and subsequent damage or unsafe driving characteristics, as the suspension undergoes extreme compression, such as after hitting a bump or going into a dip or pothole. It is a loose part inserted onto piston rod while assembly in-between two steel part surface i.e., damper and top mounting nut plate / eyelet. Referring to Figure 1, a cross sectional view of rear suspension (100) with loose bump stop (10), in accordance with prior art is shown. The bump stop (10) is inserted onto a piston rod (5), between a damper (40) and a nut plate (20), while assembling the rear suspension (100). Since bump stop is a loose part, there are chances of part missing and causing a severe jerk to the rider’s back, casualty while bottoming.
Accordingly, there exists a need to provide rear suspension bump stop, which overcomes drawbacks of the prior arts.
Objects of the invention
An object of the present invention is to provide a rear suspension bump stop integrated with nut plate.
Another object of the present invention is to eliminate the additional step of insertion of bump stop onto the piston rod, which can cause injury to the rider, if missed.
Yet another object of the present invention is to protect the piston rod from scratching and accumulation of dust and mud in the rubber cavity.
Summary of the invention
The present invention provides a rear suspension having a bump stop integrated with the nut plate of the upper mount. The rear suspension is having a damper, a piston rod extending through the damper and connected to the upper mount of the rear suspension through a nut plate. The bump stop profile is modified in such a way that it gets locked with the nut plate. With the modified design, the possibility of missing the bump stop while assembling the rear suspension is ruled out. The bump stop integrated with the nut plate also protects the piston rod from accumulation of dust or mud in the rubber cavity.
Brief description of the drawings
The objects and advantages of the present invention will become apparent when the disclosure is read in conjunction with the following figures, wherein
Figure 1 shows a cross sectional view of rear suspension with loose bump stop, in accordance with prior art.
Figure 2 shows a cross sectional view of rear suspension with bump stop integrated with nut plate, in accordance with the present invention.
Figure 3 shows a perspective view of the bump stop in accordance with the present invention.
Detailed description of the invention
The foregoing objects of the present invention are accomplished and the problems and shortcomings associated with the prior art, techniques and approaches are overcome by the present invention as described below in the preferred embodiments.
The present invention provides a rear suspension having bump stop integrated with nut plate. In the present invention, the bump stop profile is modified in such a way that it gets locked with the nut plate. With the modified design, the possibility of missing the bump stop while assembling the rear suspension is ruled out. The bump stop integrated with the nut plate also protects the piston rod from accumulation of dust or mud in the rubber cavity.
The present invention is illustrated with reference to the accompanying drawings, wherein numbers indicated in the bracket represent the components of the invention throughout the description.
Referring to Figure 2, a cross sectional view of rear suspension (200) in accordance with the present invention is shown. The rear suspension (200) is constructed to be interposed between a vehicle body and a wheel hub of the vehicle. An upper mount (160) of the rear suspension (200) is connected to the vehicle body and lower mount (not shown) is secured to the wheel hub. The rear suspension (200) comprises of a damper (140), a piston rod (150) having one end secured to the piston (not shown) slidably mounted within the damper (140) and the other end extending through the damper (140). The other end of the piston rod (150) is connected to the upper mount (160) through a nut plate (120) . A suspension spring (130), preferably a conventional coiled spring circumscribing the damper (140) and the piston rod (150) is extending from the upper mount (160). The rear suspension (200) further comprises a bump stop (110) integrated to the nut plate (120) with a rubber molding and inserted onto the piston rod (150), between the damper (140) and the nut plate (120). The profile of bump stop (110) is designed in such a way that it is easily inserted into the nut plate (120) and gets locked. With this locking, bump stop (110) is firmly held to nut plate (120) and not able to move in normal working condition. As the bump stop (110) is firmly held to the nut plate (120), the possibility of missing out the part while assembling and causing a severe jerk to the rider while bottoming is ruled out.
Advantages of the invention:
• With top side of the bump stop is fixed to the nut plate, accumulation of dust or mud in rubber cavity and scratching on piston rod is avoided.
• Integration of bump stop with nut plate eliminates the need of additional part ‘bump stop’ which causes severe injury if missed while assembling the rear suspension.
• Assembling the rear suspension with bump stop integrated with rear suspension is an economical with reduced assembly time and reduced storage space.
The foregoing objects of the invention are accomplished and the problems and shortcomings associated with prior art techniques and approaches are overcome by the present invention described in the present embodiment. Detailed descriptions of the preferred embodiment are provided herein; however, it is to be understood that the present invention may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but rather as a basis for the claims and as a representative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure, or matter. The embodiments of the invention as described above and the methods disclosed herein will suggest further modification and alterations to those skilled in the art. Such further modifications and alterations may be made without departing from the spirit and scope of the invention.
,CLAIMS:We claim:
1. A rear suspension (200) for a vehicle, having an upper mount (160) adapted for connecting to the vehicle body and a lower mount adapted for connecting to the vehicle wheel hub, the rear suspension (200) comprising:
a damper (140);
a piston rod (150) having one end secured to a piston being slidably mounted within the damper (140), and the other end extending through the damper (140), the other end secured to the upper mount (160) through a nut plate (120); and
a suspension spring (130), circumscribing the damper (140) and the piston rod (150), and extending from the upper mount (160);
wherein, the nut plate (120) is integrated with a bump stop (110) with a rubber molding such that, the bump stop (110) is inserted onto the piston rod (150), between the damper (140) and the nut plate (120).
2. The rear suspension (200) as claimed in claim 1, wherein the suspension spring is a conventional coiled spring.