FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)
TITLE OF THE INVENTION A support structure for window winding assembly
APPLICANTS
TATA MOTORS LIMITED, an Indian company having its registered office at Bombay House, 24 Homi Mody Street, Hutatma Chowk, . Mumbai 400 001 Maharashtra, India
INVENTORS
Mr. VIJAY VEER SINGH Mr. PRASHANT SAKHARAM ADARKAR
Both Indian nationals of TATA MOTORS LIMITED,
an Indian company having its registered office
at Bombay House, 24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
PREAMBLE TO THE DESCRIPTION
The following specification describes the invention and the manner in which it is performed.

Field of invention
This invention relates to a bearing structure for a manual window winding system with a handle which is located at arm-rest area of the door trim of a vehicle door.
Background of Invention
Vehicles are provided with door so that passengers can enter and exist conveniently. These doors are usually provided with openings like window to facilitate ample light and air inside the cabin of the vehicle. Further windows provided with glass such that it can raised or lowered according to the convenient of the passengers. All vehicles have window glass winding mechanisms by which the glass can be raised for lowered. These, mechanisms can be mechanical or electrical by the help of an electrical motor. The mechanical systems have a window regulator and crank handle by which it can be rotated to lower or raise the window glass. Usually these handles are located on the door trim panel and window regulator is assembled in side the panel. A shaft connects the handle with the window regulator. The door trim is also provided with other facilities like hand rest, envelope tray etc. Because of these additional features the locations where the handle can be fixed is limited. This limitation happens because of the extended length of shaft required for connecting the handle with the window regulator. The extended length of shaft creates rattling noise and vibrations to the window winding handle. So an additional mechanism is required by which such defects can be overcome.
Summary of the invention
The main objective of the invention is to provide a window winding mechanism with a window regulator, a window winding handle located at projected portion on the door panel, an extended shaft connecting the window

regulator and the winding handle, and a bearing support for the extended shaft for avoiding rattling sound and vibration of the handle during winding. According to present invention a support structure for window winding assembly comprising; an inner panel of a door, a door trim of said door with a protrusion, an extended shaft for connecting a window winding handle provided on the protruded area of said door trim to the window winding regulator of said assembly, and said extended shaft is supported on a secondary bearing member.
Brief description of the drawings
Figure 1 shows the isometric view of the door Figure 2 shows the cross sectional details at A-A Figure 3 shows the bearing structure
Detailed description of the invention
Referring now to the drawings wherein the showings are for the purpose of illustrating a preferred embodiment of the invention only, and not for the purpose of limiting the same
Figure 1 shows the vehicle door (1) with door panel (2), arm rest/ protrusion for controls (3) and window winding handle (4). The door further includes inner door panel and window regulator (2 and 8 shown in figure 2) and window glass (10). The glass (10) can be lowered or raised by rotating the handle (4).
Figure 2 shows the window winding assembly cross sectional details. The window winding regulator (8) is connected to the inner panel of the door (7). The window winding handle is provided in the region of a protrusion (3) provided on the door trim connected on the door. The protrusion is provided for either hand rest or providing other controls. The handle (4) is connected to

the winding regulator (8) by an extended shaft (6). The handle is butting against the door trim by providing a bearing member (9). To avoid rattle noises of the handle due to the extended shaft a secondary bearing support (5) is provided. The secondary bearing support structure (5) is connected to the door inner panel (7), The secondary bearing structure (5) supports the extended shaft to avoid noise and vibrations during operation of handle (4). Figure 3 shows the details of secondary bearing system (5), The bearing structure is made of M.S sheet and having a through hole to access the extended shaft and a bearing guide bush (12) for smooth operation of the extended shaft. The bearing guide bush is inserted in the through hole of the structure and fastened to it by suitable means. Bearing bush is made up of self-lubricating material. Further the bearing structure has two extended legs (11) to connect the structure to the inner panel (7) of the door. The intermediate bearing structure for supporting the extended shaft reduces the unsupported length of the shaft so that better performances achieved.
The foregoing description is a specific embodiment of the present invention. It should be appreciated that this embodiment is described for purpose of illustration only, and that numerous alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof.

We Claim
1. A support structure for window winding assembly comprising; an inner panel of a door, a door trim of said door with a protrusion, an extended shaft for connecting a window winding handle provided on the protruded area of said door trim to the window winding regulator of said assembly, and said extended shaft is supported on a secondary bearing member.
2. The support structure for window winding assembly as claimed in claim 1 wherein said secondary bearing member is attached to said door inner panel.
3. The support structure for window winding assembly as claimed in claim 1 wherein said bearing member having a bearing guide to support the extended shaft for smooth operation.
4. The support structure for window winding assembly as claimed in claim 1 wherein said protrusion on the door trim is provided for resting arm and/or locating other controls.
5. The support structure for window winding assembly as claimed in claim 3 wherein said bearing guide is a bush with through hole for accessing the extended shaft.
6. The support structure for window winding assembly as claimed in claim 3 wherein said bearing guide is made of self lubricating material.
7. The support structure for window winding assembly as claimed in claim 2 wherein said secondary bearing member is having extended legs for fastening to said door inner panel.

8. The support structure for window winding assembly as claimed any one of the preceding claims wherein said secondary bearing member having through hole to access the bearing guide.
9. The support structure for window winding assembly substantially as herein described with reference to accompanying drawings.