DESC:FORM 2

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

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of invention:
DAMPER INSTALLATION ASSEMBLY WITH TWIN BEARING

Applicant:
BEML Limited
A company Incorporated in India under the Companies Act, 1956
Having address:
BEML Soudha, 23/1, 4th Main,
Sampangirama Nagar, Bengaluru - 560 027,
Karnataka, India

The following specification particularly describes the invention and the manner in which it is to be performed.

CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY

[001] The present invention claims priority from Indian patent Provisional Application 202041007960 filed on 25 February 2020.
TECHNICAL FIELD
[002] The present subject matter described herein, in general, relates damper installation assembly in the vehicle. More particularly, the damper installation assembly with a twin bearing.
BACKGROUND
[003] The vehicle starts by powered crankshaft. The power from prime mover is delivered to drive-line through flywheel. Then the power is transmitted to the Torque converter via Damper Installation Assembly and front Drive Shaft. The Damper Installation Assembly acts as a damper for reducing the Engine torque fluctuations thereby protecting the drive-line components and aggregates.
[004] Existing technology, damper installation assembly uses single bearing on main shaft and pilot bearing on engine flywheel, which induces vibrations due to the single bearing, there remains a possibility of failures of flywheel housing and reduction in the life of the flywheel housing, therefore repairing cost factor rises.
[005] Hence, there is necessity of an assembly in order to enhance life of flywheel housing and to reduce unfavorable oscillations.

SUMMARY
[006] Before the present assembly and method are 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 disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only, and is not intended to limit the scope of the present application. This summary is provided to introduce aspects related to damper installation assembly with twin bearing and the aspects are further elaborated below in the detailed 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.
[007] The present subject matter described herein, in general, relates to damper installation with twin bearing and its purpose is to enhance life of flywheel housing.
[008] In order to reach above-mentioned purpose of the present invention, the invention is to provide unwanted oscillation free power transmission through a flywheel. The twin bearing support is given to the a splined shaft, which gives good support to the shaft while rotating. The rubber cushions are assembled in between an inner body and an outer body in order to absorb the torsional vibration developed from the engine. A damper installation assembly cover provides the housing for a bearing to support the shaft and act as enclosure for the damper assembly.
[009] The twin bearing assembly eliminates the resting of the pilot bearing on the flywheel there by disconnecting the shaft from the flywheel, which will result in minimizing the vibration transfer to the flywheel housing.

BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The fore going summary, as well as the following detailed description of embodiments, is better understood when read in conjunction with the appended drawing. For 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.
[0011] The detailed description is described with reference to the accompanying figure. In the figure, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawing to refer like features and components.
[0012] Figure 1 illustrates a damper installation assembly with the twin bearing support to the rotating shaft.
[0013] The figure depicts various embodiments of the present disclosure for purposes of illustration only. One 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
[0014] 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.
[0015] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments. 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.
[0016] The present subject matter relates to twin bearing support given to the rotating shaft. To overcome the drawbacks of single bearing, a pair of bearing (4) is introduced which gives firm support to a secondary shaft (6) in order to avoid production of unwanted oscillations and to avoid wear and tear of a flywheel.
[0017] In an embodiment, the pair of bearing (4) coaxially configured into a damper installation assembly cover (3) in order to provide support to the secondary shaft (6) and to isolate direct connection of the flywheel with the secondary shaft (6). The damper installation assembly cover (3) provides housing to the pair of bearing (4) and act as enclosure for a damper assembly.
[0018] The damper installation assembly is configured with an outer body (8), rubber cushions(10) and inner body(9). Therefore, power from an engine is transmitted to the outer body (8) via Flywheel. Further, the power is transmitted from the outer body (8) to an inner body (9) via rubber cushions (10). The rubber cushions (10) reduces the engine torque fluctuations developed from the engine. The flanges (2) keeps intact the rubber cushions (10) in between the inner body (9) and the outer body (8). The unfavorable oscillations free power further transmits from the inner body (9) to the secondary shaft (6), wherein the inner body (9) with splines are coupled with the shaft (6). The Damper installation assembly delivers the power through its coupling to the Front drive shaft leading to the torque converter.
[0019] The coupling (5) couples the damper assembly to a driveline in order to transmit engine torque. Further, a grease nipple (7) is connected to the bearing seating area, which allows the grease flow in one direction. An adaptor (1) connected with grease overflowing hose.
[0020] The twin-bearing configuration disconnects the shaft (6) from flywheel (12) which result into minimizing the vibration transfer to a flywheel housing and reduces wear and tear or damage of flywheel housing.
[0021] Due to twin bearing assembly, a length of output shaft from flywheel face to coupling face is increased; therefore, a front drive shaft length gets reduced and reduces the chances of drive shaft spider failure.
[0022] The invention discloses twin-bearing support, which is given to the rotating shaft. However, the number of bearings and configuration of bearing with damper installation assembly cover suitably vary with corresponding features of shaft.
[0023] In an embodiment a damper installation assembly in engine transmission with twin bearing assembly comprises, a twin bearing (4) coaxially configured into a damper installation assembly cover (3) to provide firm support to a secondary shaft (6), wherein the damper installation assembly cover (3) is adapted to form an enclosure for damper assembly. An outer body (8) is configured to be coupled with an engine flywheel (12). A plurality of rubber cushion (10) are mounted between an inner body (9) and the outer body (8) for transferring the rotary motion from the outer body (8) to inner body (9) to rotate the secondary shaft (6). And a coupling (5) with internal splines configured to be mounted on the end of secondary shaft (6) having external splines for providing the motion to the torque converter/ transmission.
[0024] Further, in the assembly the secondary shaft (6) with external splines is configured to be mesh with the inner body (9) with internal splines to transmit engine torque to transmission. A coupling (5) with internal splines couples the secondary shaft (6) to the transmission to transmit engine torque. The damper installation assembly cover (3) is configured to be coupled with an engine flywheel housing (11).
[0025] In the assembly, the rubber cushions (10) are configured to be mounted between an inner body (9) and the outer body (8) to reduce Engine torque fluctuations developed from the engine. The flanges (2) are configured for gripping the rubber cushions (10) in between the inner body (9) and the outer body (8). A grease nipple (7) is configured to the bearing seating area to allow the grease flow in one direction. The twin bearings (4) are configured to provide firm support to the secondary shaft (6) by minimizing the unwanted oscillations and improves the flywheel housing’s span of life.
[0026] Exemplary assembly or system 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.
[0027] Some object of the invention is to minimize the unwanted oscillations and improves the flywheel’s span of life.
[0028] Part List
Part No. Part Name
1. Adapter
2. Flanges
3. Damper installation assembly cover
4. Bearings
5. Coupling
6. Shaft or rotating shaft
7. Grease nipple
8. Outer body
9. Inner body
10. Rubber cushions
11. Flywheel housing
12. Flywheel
13. Engine shaft
,CLAIMS:
1. A damper installation assembly in engine transmission with twin bearing assembly comprises,
a twin bearing (4) coaxially configured into a damper installation assembly cover (3) to provide firm support to a secondary shaft (6), wherein the damper installation assembly cover (3) is adapted to form an enclosure for damper assembly;
an outer body (8) is configured to be coupled with an engine flywheel (12);
a rubber cushion (10) is mounted between an inner body (9) and the outer body (8) for transferring the rotary motion from the outer body (8) to inner body (9) to rotate the secondary shaft (6); and
a coupling (5) configured to be mounted on the end of secondary shaft (6) for providing the motion to the transmission.
2. The assembly as claimed in claim 1, wherein the secondary shaft (6) is configured to be mesh with the inner body (9) to transmit engine torque to transmission.
3. The assembly as claimed in claim 1, wherein a coupling (5) couples the secondary shaft (6) to the transmission to transmit engine torque.
4. The assembly as claimed in claim 1, wherein the damper installation assembly cover (3) is configured to be coupled with an flywheel housing (11).
5. The assembly as claimed in claim 1, wherein the rubber cushion (10) is configured to be mounted between an inner body (9) and the outer body (8) to absorb torsional vibration developed from the engine.
6. The assembly as claimed in claim 1, wherein a flange (2) configured for gripping the rubber cushion (10) in between the inner body (9) and the outer body (8).
7. The assembly as claimed in claim 1, wherein a grease nipple (7) is configured to the bearing seating area to allow the grease flow in one direction.
8. The assembly as claimed in claim 1, wherein the twin bearing (4) is configured to provide firm support to the secondary shaft (6) by minimizing the unwanted oscillations and improves the flywheel’s housing span of life.