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A Mechanism For Disengaging A Clutch Plate From A Flywheel Of A Parked Vehicle

Abstract: The present disclosure relates to clutch systems, and envisages a mechanism (100) for disengaging a clutch plate from a flywheel of a parked vehicle. The mechanism (100) comprises an extendable stopper pin (105) and a lever (110) coupled thereto. The lever (110) is configured to be displaced to enable extension of the stopper pin (105) when the vehicle is parked. A stopper plate (115) is provided on a pedal shank (20) to allow the extended stopper pin (105) to rest thereon to facilitate disengagement of the clutch plate from the flywheel.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
16 February 2022
Publication Number
33/2023
Publication Type
INA
Invention Field
MECHANICAL ENGINEERING
Status
Email
Parent Application

Applicants

Mahindra and Mahindra Limited
Farm Equipment Sector, Swaraj Division, Phase IV, Industrial Area, S.A.S. Nagar (Mohali)-160055, Punjab, India

Inventors

1. KUMAR, Rohit
Farm Equipment Sector, Swaraj Division, Phase IV, Industrial Area, S.A.S. Nagar (Mohali) 160055, Punjab, India
2. MITTAL, Sunil
Farm Equipment Sector, Swaraj Division, Phase IV, Industrial Area, S.A.S. Nagar (Mohali) 160055, Punjab, India

Specification

The present disclosure relates to clutch systems of vehicles.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Conventionally, a parked vehicle has the clutch in an engaged position. In the engaged position the clutch mates with the flywheel. However, prolonged contact of the clutch plate with the flywheel when the vehicle is parked results in rusting of the clutch plate. This makes it difficult to operate the clutch i.e. the operation of engaging and disengaging of the clutch becomes difficult. Moreover, the clutch plate sticks to the flywheel due to the vehicle being left in an inoperative condition for a prolonged duration. This results in increased breakdown maintenance of the clutch assembly, as the involved components need to be dismantled for restoring the clutch to working condition.
There is therefore, felt a need for a mechanism for disengaging clutch of a parked vehicle from its flywheel to alleviate the aforementioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide a mechanism for disengaging clutch of a parked vehicle.
Another object of the present disclosure is to provide a mechanism for disengaging clutch of a parked vehicle that eliminates rusting of the clutch and the flywheel.
Yet another object of the present disclosure is to provide a mechanism for disengaging clutch of a parked vehicle that eliminates sticking of the clutch and the flywheel.

Still another object of the present disclosure is to provide a mechanism for disengaging clutch of a parked vehicle that eliminates breakdown maintenance of the vehicle, caused due to frozen clutch plate.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages a mechanism for disengaging a clutch plate from a flywheel of a parked vehicle.
The mechanism comprises an extendable stopper pin, a lever and a stopper plate. The stopper pin is mounted adjacent to the clutch pedal. The lever is coupled to the stopper pin. The lever is configured to be displaced to enable extension of the stopper pin. The stopper plate is provided on a pedal shank. The stopper plate is configured to allow the extended stopper pin to rest thereon to lock the clutch pedal in its disengaged position and disengage the clutch plate from the flywheel.
In an embodiment, the lever is configured to be manually displaced to a first position to enable extension of the stopper pin when the vehicle is parked.
In an embodiment, the mechanism includes a housing mounted on the vehicle body, adjacent to the clutch pedal. The housing is configured to house the stopper pin therein.
In another embodiment, the stopper pin is a telescopic rod.
In yet another embodiment, the stopper pin is a dowel pin displaceably mounted in a hollow cylinder.
In one embodiment, the lever is configured to be manually displaced to a second position to enable retraction of the stopper pin when the vehicle is in its operative configuration.

In another embodiment, the stopper pin comprises a flange configured at an operative free end thereof. The flange is configured to lock the stopper pin against the stopper plate when extended.
In yet another embodiment, the lever is coupled to the stopper pin.
In another embodiment, the stopper pin is of mild steel.
In still another embodiment, the stopper plate is of mild steel.
In an embodiment, the stopper plate is welded to the pedal shank at a predetermined angle ranging from 7° to 11°.
In another embodiment, the stopper plate is welded to the pedal shank at a predetermined angle of 9°.
In yet another embodiment, the distance between the stopper pin and a mounting bracket of the pedal shank ranges from 120mm to 135mm.
In still another embodiment, the distance between the stopper pin and the stopper plate ranges from 120mm to 140mm.
In one embodiment, the thickness of the stopping pin varies from 4mm to 8mm.
In another embodiment, the thickness of the stopper plate varies from 10mm to 15mm.
In yet another embodiment, the length of the stopper pin, when extended, varies from 20mm to 25mm.
In still another embodiment, the length of the stopper pin, when retracted, varies from 10mm to 12mm.
The present disclosure further envisages a vehicle having the mechanism for disengaging a clutch plate of the vehicle in a parked state of the vehicle.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING

A mechanism, of the present disclosure, for disengaging a clutch plate from a flywheel of a parked vehicle will now be described with the help of the accompanying drawing, in which:
Figure 1 shows an isometric view of mechanism for disengaging a clutch plate from a flywheel of a parked vehicle;
Figure 2 shows an isometric view of the clutch pedal of the Figure 1;
Figure 3 shows an isometric view of the mechanism of the Figure 1;
Figure 4 shows a side view of the mechanism, of Figure 1, in which the clutch pedal is in an engaged position;
Figure 5 shows an isometric view of the Figure 4;
Figure 6 shows a front view of the mechanism, of Figure 4, in which the clutch pedal is in the engaged position;
Figure 7 shows a side view of the mechanism, of Figure 1, in which the clutch pedal is in a disengaged position;
Figure 8 shows an isometric view of the mechanism of Figure 7; and
Figure 9 shows a front view of the mechanism of Figure 7.
LIST OF REFERENCE NUMERALS

10 clutch pedal
15 vehicle body
20 pedal shank

25 mounting bracket
100 mechanism
102 housing
105 stopper pin
110 lever
115 stopper plate
120 Flange
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the

forms "a," "an," and "the" may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms "comprises," "comprising," "including," and "having," are open ended transitional phrases and therefore specify the presence of stated features, operations, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, operations, elements, components, and/or groups thereof.
When an element is referred to as being "mounted on," "engaged to," "connected to," or "coupled to" another element, it may be directly on, engaged, connected or coupled to the other element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements.
The terms first, second, third, etc., should not be construed to limit the scope of the present disclosure as the aforementioned terms may be only used to distinguish one element, component, region, layer or section from another component, region, layer or section. Terms such as first, second, third etc., when used herein do not imply a specific sequence or order unless clearly suggested by the present disclosure.
Terms such as "inner," "outer," "beneath," "below," "lower," "above," "upper," and the like, may be used in the present disclosure to describe relationships between different elements as depicted from the figures.
A mechanism (100), of the present disclosure, for disengaging a clutch plate from a friction plate of a parked vehicle will now be described in detail with respect to Figure 1 through Figure 9. The vehicle has a clutch pedal (10) connected to the vehicle body (15) with the help of a pedal shank (20). The pedal shank (20) is mounted on the vehicle body (15) with the help of a mounting bracket (25). The vehicle further comprises a flywheel configured to engage with the clutch plate when the clutch pedal (10) is in its released position.
When the vehicle is in its parked position, the clutch pedal (10) is in its released position. After a prolonged period of time of the vehicle being parked, the clutch plate tends to rust and stick with the friction plate. It becomes difficult to

disengage the stuck/frozen clutch plate from the friction plate. Hence, it is necessary to take preventive measures that prevent the engagement of the clutch plate with the friction plate at the first place, instead of trying to disengage the clutch plate after being stuck.
The mechanism (100) comprises an extendable stopper pin (105), a lever (110) and a stopper plate (115). The stopper pin (105) is mounted on the vehicle body (15), particularly adjacent to the clutch pedal (10). The stopper pin (105) is configured to be extended in an operative configuration thereof. Further, the stopper pin (105) is configured to be retracted from its extended position to its normal configuration, in a non-operative configuration thereof.
The lever (110) is coupled to the stopper pin (105). The lever (110) is configured to be displaced, by a user, to enable extension of the stopper pin (105). In an embodiment, the lever (110) is configured to be manually displaced to a first position to enable extension of the stopper pin (105). The stopper plate (115) is provided on the pedal shank (20). The stopper plate (115) is configured to allow the extended stopper pin (105) to rest thereon to lock the clutch pedal (10) in its disengaged position to disengage the clutch plate from the flywheel.
In an embodiment, the mechanism (100) includes a housing (102) mounted on the vehicle body (15). In a preferred embodiment, the housing (102) is mounted adjacent to the clutch pedal (10). The housing (102) is configured to house the stopper pin (105) therein.
In an embodiment, the stopper pin (105) is a telescopic rod, which particularly has a rod-in-rod configuration. The inner rod of the telescopic rod is pulled in or pushed out.
In another embodiment, the stopper pin (105) is a dowel pin which is displaceably mounted in a hollow cylinder. The dowel pin is configured to be pushed in and out of the cylinder.
In an embodiment, the stopper pin (105) is configured to support a load of 160-170 N exerted thereon when the pedal shank (20) rests thereon.

In an embodiment, the lever (110) is configured to be manually displaced to a second position to enable retraction of the stopper pin (105) when the vehicle is in its operative configuration.
In an embodiment, the stopper pin (105) comprises a flange (120) configured at an operative free end thereof. The flange (120) is configured to lock the stopper pin (105) against the stopper plate (115) when extended. This ensures that the stopper pin (105) is not accidentally pushed into its retracted position, to release the clutch pedal (10) and therefore facilitate engagement of the clutch plate with the friction plate. In an embodiment, the flange (120) is integrally manufactured with the stopper pin (105).
In an embodiment, the lever (110) is coupled to the stopper pin (105), using a dowel pin.
In one embodiment, the stopper pin (105) is of mild steel.
In another embodiment, the stopper plate (115) is of mild steel.
In one embodiment, the stopper plate (115) is welded to the pedal shank (20) at a predetermined angle ranging from 7° to 11°.
In another embodiment, the stopper plate (115) is welded to the pedal shank (20) at a predetermined angle of 9°.
In yet another embodiment, the distance between the stopper pin (105) and a mounting bracket (25) of the pedal shank (20) ranges from 120mm to 135mm.
In still another embodiment, the distance between the stopper pin (105) and the stopper plate (115) ranges from 120mm to 140mm.
In one embodiment, the thickness of the stopper pin (105) varies from 4mm to 8mm.
In another embodiment, the thickness of the stopper plate (115) varies from 10mm to 15mm.

In one embodiment, the length of the stopper pin (105), when extended, varies from 20mm to 25mm.
In another embodiment, the length of the stopper pin (105), when extended, is 22mm.
In one embodiment, the length of the stopper pin (105), when retracted, varies from 10mm to 12mm.
In another embodiment, the length of the stopper pin (105), when retracted, is 11mm.
The present disclosure further envisages a vehicle having the mechanism (100), described in the present disclosure, for disengaging a clutch plate of the vehicle in its parked state.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCEMENTS
The present disclosure described hereinabove has several technical advantages including, but not limited to, the realization of a mechanism for disengaging a clutch plate from a flywheel of a parked vehicle that:
• eliminates rusting of the clutch and the flywheel;
• eliminates sticking of the clutch and the flywheel; and
• eliminates breakdown maintenance of the vehicle, caused due to frozen clutch plate.

The foregoing disclosure has been described with reference to the accompanying embodiments which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments 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.
The foregoing description of the specific embodiments 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 preferred 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.
Any discussion of materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.

While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation.

CLAIM:

1. A mechanism (100) for disengaging a clutch plate from a flywheel of a
parked vehicle, said mechanism (100) comprising:
• an extendable stopper pin (105) mounted adjacent to a clutch pedal
(io);
• a lever (110), coupled to said stopper pin (105), configured to be displaced to enable extension of said pin (105); and
• a stopper plate (115), provided on a pedal shank (20), configured to allow said extended stopper pin (105) to rest thereon to lock the clutch pedal (10) in its disengaged position and disengage the clutch plate from the flywheel.

2. The mechanism (100) as claimed in claim 1, wherein said lever (110) is configured to be manually displaced to a first position to enable extension of said stopper pin (105) when the vehicle is parked.
3. The mechanism (100) as claimed in claim 1, which includes a housing (102) mounted on the vehicle body (15), adjacent to the clutch pedal (10), said housing (102) being configured to house said stopper pin (105) therein.
4. The mechanism (100) as claimed in claim 1, wherein said stopper pin (105) is a telescopic rod.
5. The mechanism (100) as claimed in claim 1, wherein said stopper pin (105) is a dowel pin displaceably mounted in a hollow cylinder.
6. The mechanism (100) as claimed in claim 1, wherein said lever (110) is configured to be manually displaced to a second position to enable retraction of said stopper pin (105) when the vehicle is in its operative configuration.

7. The mechanism (100) as claimed in claim 1, wherein said stopper pin (105) comprises a flange (120) configured at an operative free end thereof, said flange (120) configured to lock said stopper pin (105) against said stopper plate (115) when extended.
8. The mechanism (100) as claimed in claim 1, wherein said lever (110) is coupled to said stopper pin (105).
9. The mechanism (100) as claimed in claim 1, wherein said stopper pin (105) is of mild steel.
10. The mechanism (100) as claimed in claim 1, wherein said stopper plate (115) is of mild steel.
11. The mechanism (100) as claimed in claim 1, wherein said stopper plate (115) is welded to the pedal shank (20) at a predetermined angle ranging from 7° to 11°.
The mechanism (100) as claimed in claim 1, wherein said stopper plate (115) is welded to the pedal shank (20) at a predetermined angle of 9°.
The mechanism (100) as claimed in claim 1, wherein the distance between said stopper pin (105) and a mounting bracket (25) of the pedal shank (20) ranges from 120mm to 135mm.
The mechanism (100) as claimed in claim 1, wherein the distance between said stopper pin (105) and said stopper plate (115) ranges from 120mm to 140mm.
15. The mechanism (100) as claimed in claim 1, wherein the thickness of said stopper pin (105) varies from 4mm to 8mm.
16. The mechanism (100) as claimed in claim 1, wherein the thickness of said stopper plate (115) varies from 10mm to 15mm.

17. The mechanism (100) as claimed in claim 1, wherein the length of said stopper pin (105), when extended, varies from 20mm to 25mm.
18. The mechanism (100) as claimed in claim 1, wherein the length of said stopper pin (105), when retracted, varies from 10mm to 12mm.
19. A vehicle having a mechanism (100), as claimed in the preceding claims, for disengaging a clutch plate of the vehicle in a parked state of the vehicle.

Documents

Application Documents

# Name Date
1 202211008240-STATEMENT OF UNDERTAKING (FORM 3) [16-02-2022(online)].pdf 2022-02-16
2 202211008240-REQUEST FOR EXAMINATION (FORM-18) [16-02-2022(online)].pdf 2022-02-16
3 202211008240-PROOF OF RIGHT [16-02-2022(online)].pdf 2022-02-16
4 202211008240-POWER OF AUTHORITY [16-02-2022(online)].pdf 2022-02-16
5 202211008240-FORM 18 [16-02-2022(online)].pdf 2022-02-16
6 202211008240-FORM 1 [16-02-2022(online)].pdf 2022-02-16
7 202211008240-FIGURE OF ABSTRACT [16-02-2022(online)].jpg 2022-02-16
8 202211008240-DRAWINGS [16-02-2022(online)].pdf 2022-02-16
9 202211008240-DECLARATION OF INVENTORSHIP (FORM 5) [16-02-2022(online)].pdf 2022-02-16
10 202211008240-COMPLETE SPECIFICATION [16-02-2022(online)].pdf 2022-02-16
11 202211008240-FORM-8 [17-02-2022(online)].pdf 2022-02-17
12 202211008240-FER.pdf 2025-10-16
13 202211008240-FORM 3 [01-11-2025(online)].pdf 2025-11-01

Search Strategy

1 202211008240_SearchStrategyNew_E_SearchClutchE_25-08-2025.pdf