DESC:CROSS-REFERENCE TO RELATED APPLICATIONS
[001] This application is based on and derives the benefit of Indian Provisional Application 201741011579, the contents of which are incorporated herein by reference.
TECHNICAL FIELD
[002] The embodiments herein generally relate topower transmission unit in vehicles and more particularly, to an integrated locknut and speedo tonner arrangement for a power transmission unit of at least one of a vehicle and a machine.
BACKGROUND
[003] Generally, aspeedo tonner is a separate component which is mounted on an output shaft of a power transmission unit of a vehicle.Typically, a speedo sensor is provided in communication with the speedo tonner to sense the output speed of the power transmission unit of the vehicle and the same speed which sensed by the speedo sensor is displayed on a cabin dashboard (instrumental cluster) of the vehicle. A locknut is a separate component which is used to secure the components that are assembled onto the output shaft of the power transmission unit. Most vehicles have speedo tonner spaced away from the locknut. The positioning of speedo tonner on the output shaft of the power transmission unit is complex and is one of the challenges posed to the original equipment manufacturers (OEM’S). Further, the manufacturing of the speed tonner involves multiple machining operations and the process is tedious.The chances of failure mode of the speedo tonner are high when the speedo sensor is not properly mounted onto the output shaft. As the speedo tonner and locknut are manufacturedseparately, the cost of manufacturing increases. Further, the packaging of the locknut and the speed tonner separately onto the output shaft consumes more packaging space, increases an overall length of the output shaft assembly and increases an overall weight of the power transmission unit.
[004] Therefore, there existsa need for an integrated locknut and speedo tonner arrangement for a power transmission unit of at least one of a vehicle and a machine, which obviates the aforementioned drawbacks.
OBJECTS
[005] The principal object of an embodiment of this invention is toprovide anintegrated locknut and speedo tonner arrangement for a power transmission unit of at least one of a vehicle and a machine.
[006] Another object of an embodiment of this invention is to provide anintegrated locknut and speedo tonner arrangement for a power transmission unit, where a speed tonner arrangement is integrated with a locknut.
[007] Another object of an embodiment of this invention is to provide anintegrated locknut and speedo tonner arrangement for a power transmission unit, where a lock nut is integrated with a speed tonner arrangement.
[008] Another object of an embodiment of this invention is to provide anintegrated locknut and speedo tonner arrangement for a power transmission unit, which eliminates the need of a separate locknut and a separate speedo tonner.
[009] Another object of an embodiment of this invention is to provide anintegrated locknut and speedo tonner arrangement for a power transmission unit, which has optimized design that reduces an overall length of an output shaft and gear assembly of the power transmission unit, an overall weight of the output shaft and gear assembly and eliminates the failure mode of the speedo tonner.
[0010] These and other objects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF DRAWINGS
[0011] The embodiments of the invention are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0012] Fig. 1 depicts a perspective view of an integrated locknut and speedo tonner arrangement for a power transmission unit, according to an embodiment of the invention as disclosed herein; and
[0013] Fig. 2 depicts a front view of an output shaft and gear assembly of the power transmission unit, according to an embodiment of the invention as disclosed herein.

DETAILED DESCRIPTION
[0014] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0015] The embodiments herein achieve an integrated locknut and speedo tonner arrangement for a power transmission unit of at least one of a vehicle and a machine. Referring now to the drawings, and more particularly to Figs. 1 through 2, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0016] Fig. 1 depicts a perspective view of an integrated locknut and speedo tonner arrangement 100 for a power transmission unit 10 of a vehicle, according to an embodiment of the invention as disclosed herein. In an embodiment, the integrated locknut and speedo tonner arrangement 100 includes a locknut 102 and a speedo tonner arrangement 104. For the purpose of this description and ease of understanding, the integrated locknut and speedo tonner arrangement 100 is explained herein below with reference to be provided in a power transmission unit 10 of a vehicle. However, it is also within the scope of the invention to provide the integrated locknut and speedo tonner arrangement 100 in a power transmission drive train of at least one of a machine, any other systems, wind turbines, generators, turbines, rotary applications and any other machines and systems using rotary shafts and gears.
[0017] The locknut 102 is used to secure the components assembled onto anoutput shaft 10S (as shown in fig. 2) of the power transmission unit 10.
[0018] The speedo tonner arrangement 104 is configured to be integrated with the locknut 102. The speedo tonner arrangement 104 includes a plurality of speed sensing portions 104S configured to be integrated on the locknut 102. Each speed sensing portion 104S is provided in communication with a speedo sensorS (as shown in fig. 2) which senses an output speed of the output shaft 10S of the power transmission unit 10 and accordingly provides the information (speed) to at least one of a cabin dashboard (instrumental cluster) in the vehicle, and a separate display unit installed in an industrial workstation. Each speed sensing portion 104S of the speedo tonner arrangement 104 is also called as speedo tonner portion. Each speed sensing portion 104S of the speedo tonner arrangement 104 is provided on the locknut 102 at a predefined angle and spaced away from the other. In an embodiment, each speed sensing portion 104S of the speedo tonner arrangement 104 is at least a protrusion and a stepped protrusion. In another embodiment, each speed sensing portion 104S of the speedo tonner arrangement 104 is at least one of a cavity and an opening.
[0019] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
,CLAIMS:We claim,
1. An integrated locknut and speedo tonner arrangement 100 for a power transmission unit 10, said arrangement 100 comprising:
a locknut 102; and
a speedo tonner arrangement 104 configured to be integrated with said locknut 102.

2. The arrangement 100 as claimed in claim 1, wherein said speedo tonner arrangement 104 includes,
a plurality of speed sensing portions 104S configured to be integrated on said locknut 102,
wherein
each speed sensing portion 104S is adapted to be provided in communication with a speedo sensor S.

3. The arrangement 100 as claimed in claim 2, wherein each speed sensing portion 104S of said speedo tonner arrangement 104 is provided on said locknut 102 at a predefined angle and spaced away from the other.

4. The arrangement 100 as claimed in claim 3, wherein each speed sensing portion 104S of said speedo tonner arrangement 104 is at least a protrusion.

5. The arrangement 100 as claimed in claim 3, wherein each speed sensing portion 104S of said speedo tonner arrangement 104 is at least one of stepped protrusion, a cavity and an opening.

6. The arrangement 100 as claimed in claim 1 is configured to be provided in the power transmission unit 10 of at least one of a vehicle and a machine.