TECHNICAL FIELD
[0001] The present disclosure, in general, relates to a clutch release system for an automated manual transmission. In particular, the present disclosure relates to hydraulically operated clutch release system having rack and pinion gear arrangement providing smooth conversion of linear motion to rotary motion that helps in operating the clutch efficiently and durably.
BACKGROUND
[0002] In automobile, clutch release system plays a major role in operating the clutch that is considered as main part of the power transmission system as it transmits the power developed by the engine to the driving wheels.
[0003] FIG.1 illustrates the clutch release system in accordance with the state of art related to this field of technology. Generally, in present models, a clutch actuator cable 102 is attached to the clutch actuator piston 104. The clutch actuator cable 102 that is used in the clutch release system 100 is operated by the linear movement of the clutch actuator piston 104 inside cylinder 106 through hydraulic force. The hydraulic force is generated by fluid flowing to cylinder 106 through oil channels (not shown).
[0004] When fluid enters into cylinder 106, this fluid exerts force on clutch actuator piston 104 that results in a linear movement of the clutch actuator piston 104. This linear movement of the clutch actuator piston 104 is converted into rotary motion of a clutch release arm 108 by virtue of spherical joint (ball & socket joint)110 provided at a junction between the clutch release arm 108 and the clutch actuator cable 102 as shown in FIG.1. Therefore, the motion of the

clutch actuator cable 102 is linear and the clutch release arm is rotary. This rotary motion of the clutch release arm 108 further operates the clutch release bearing 112 that ultimately leads to engagement and disengagement of the clutch (not shown).
[0005] In addition, the clutch release system 100 mentioned above is of automated manual transmission (AMT) having single-acting, spring-return hydraulic piston cylinder arrangement causing the clutch actuator cable 102 to move which ultimately exerts force on the clutch release arm 108. Moreover, the clutch release arm 108 moves the clutch release bearing 112 causing it to open the clutch (not shown). The clutch gets closed by a spring force of a clutch Belleville spring itself.
[0006] During this power transmission, there are chances of misalignment of the clutch actuator cable 102, and also failure of spherical joint 110 to move smoothly which may lead to bending of the actuation cable 102 and cause its breakage. In addition, there are also risks of entrance of dust in the bellow that results in resistance between the cylinder 106 and the clutch actuator piston 104 that causes wear of piston 104.
[0007] Most of the prior arts related to this filed of technology proposes the clutch release system converting rotary motion into linear motion that still considered as a problem as they fail to achieve the rigidity and durability as required by the present disclosure. Moreover, they transmit force and motion in only one direction.
[0008] Hence, there is a requirement of the clutch release system for an automated manual transmission having better rigidity, efficiency and durability.

OBJECTS OF THE DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
[0010] It is a general or primary object of the present disclosure to provide an efficient, rigid and durable clutch release system for an automated manual transmission.
[0011] It is another object of the present disclosure to provide the clutch release system having rack and pinion gear arrangement that converts the linear motion to rotary motion that in turn enhances the durability and efficiency of said system.
[0012] It is another object of the present disclosure to provide the clutch release system for an automated manual transmission having configuration that offer proper lubrication and cleaning of the rack and pinion gear mechanism for clutch release system in a vehicle.
[0013] It is another object of the present disclosure to provide the clutch release system for an automated transmission that requires less maintenance.
[0014] It is yet another object of the present disclosure to provide clutch release system for an automated transmission having better performance and reliability.
[0015] These and other objects and advantages of the present disclosure will be apparent to those skilled in the art after a consideration of the following detailed description taken in conjunction with the accompanying drawings in which a preferred form of the present disclosure is illustrated.

SUMMARY
[0016] This summary is provided to introduce concepts related to a clutch release system for an automated manual transmission having better efficiency, rigidity and durability. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0017] In an embodiment, the present disclosure relates to a clutch release system for an automated manual transmission. The clutch release system comprising a piston head attached to a clutch actuator piston, said piston head having an outer body formed with rack gear. An arm head is attached to a clutch release arm. The arm head having a top edge formed with pinion gear. The rack gear of the piston head is being meshed with the pinion gear of the arm head for conversion of linear motion of the clutch actuator piston into rotatory motion of the clutch release arm.
[0018] In an aspect, the present disclosure provides a rack gear that are circular in nature.
[0019] In an aspect, the present disclosure provides a circular felt gear applicator having gear on outer circumference that are meshed with the rack gear of the piston head.
[0020] In an aspect, the present disclosure provides the circular felt gear applicator having an outer surface and an inner surface.
[0021] In an aspect, the present disclosure provides the circular felt gear having inner surface containing the gear oil that may be received from an oil

reservoir via oil pipe/hose/channel (not shown) and the outer surface is provided with the gear.
[0022] In an aspect, the present disclosure provides the circular felt gear having gear at the outer circumference that are used to release gear oil on the rack gear formed on the piston head.
[0023] In an aspect, the present disclosure provides the piston head that is attached to the clutch actuator piston through a spring pin.
[0024] In an aspect, the present disclosure provides the arm head that is attached to the clutch release arm through at least a pair of spring pin.
[0025] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made regarding the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0026] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:

[0028] FIG.1 illustrates a placement of the clutch release system 100 in an automated manual transmission, its enlarged structure and major components, in accordance with a prior art.
[0029] FIG. 2 illustrates a placement of the proposed clutch release system 200 in an automated manual transmission, its enlarged structure and major components in accordance with an embodiment of the present disclosure.
[0030] FIG.3 illustrates an exploded view of the components of the proposed clutch release system 200 for an automated manual transmission.
[0031] FIG.4 illustrates a front and a back view of the proposed clutch release system 200 for an automated manual transmission.
[0032] The figures depict embodiments of the present subject matter for illustration only. A person skilled in the art will easily recognize from the following description 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
[0033] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to con all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0034] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" includes plural reference unless the

context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.
[0035] In the present invention a solution is provided to overcome the problem in the prior arts.
[0036] FIG. 2 illustrates a placement of the proposed clutch release system 200 in an automated manual transmission, its structure and its major components in accordance with an embodiment of the present disclosure.
[0037] In the proposed clutch release system 200 as illustrated in FIG.2 comprises two sections called as an upper section and a lower section that are meshed together for converting the linear motion of the upper section into rotary motion of the lower section. The upper section consists of cylinder 106, piston 104, piston head 202 and rack gear 204. The lower section consists of clutch release arm 108, arm head 206, and pinion gear 208.
[0038] It also depicts the placement of the proposed clutch release system 200 in the automated manual transmission and the rubber bellows 212 mounted over the piston 104 near the piston head 202.
[0039] FIG.3 depicts the exploded view of all the components of the proposed clutch release system. The upper section of the clutch release system 200 consists of a clutch actuator piston 104, wherein the front end of said clutch actuator piston 104 is attached with a piston head 202 through a spring pin 202-S. The piston head 202 is generally made of metal. The outer body of said piston head 202 is shaped with rack gear 204. The rack gear 204 may either be circular or rectangular in shape. But in the present disclosure, the rack gear 204 is of circular nature.

[0040] The end of the clutch actuator piston 104 that is provided near the piston head 202 is covered by a rubber bellow 212 along the circumference as shown in FIG.3. A wiper seal 214 is also provided in between the clutch actuator piston 104 and the cylinder 106. This rubber bellow 212 and the wiper seal 214 ensure minimal dust entrance in between the clutch actuator piston 104 and the cylinder 106 arrangement.
[0041] However, the lower section of the clutch release system 200 consists of an arm head 206 that is attached to an upper end of a clutch release arm 108 though a pin joint or spring pin 206-S.. This spring pin provides modularity as it helps in easy engagement and disengagement of the components as required. The lower end of the clutch release arm 108 is attached with the clutch release shaft through splined joint. The arm head 206 mentioned above comprises a top edge formed with a pinion gear 208.
[0042] In the proposed clutch release system, the upper section and the lower section are meshed together for converting the linear motion of the upper section into rotary motion of the lower section as shown in FIG.3.
[0043] Here, the rack gear 204 formed on the piston head 202 are being meshed with the pinion gear 208 formed on the arm head 206 for conversion of linear motion of the clutch actuator piston 104 into rotary motion of the clutch release arm 108.
[0044] The clutch release system 200 further comprising a circular felt gear applicator 210 having gear 210-G formed on outer circumference 210-O that are meshed with the rack gear 204 of the piston head 202. It further comprises an inner surface 210-1. The inner surface 210-1 of the circular felt gear 210 is provided with a gear oil 210-L and the outer surface is provided with the gear 210-G. The gear 210-G of the circular felt gear applicator 210 release gear oil 210-L on the rack gear 204 formed on the piston head 202. This oil 210-L is

received on the inner surface of the felt gear applicator 210 via oil channels 211-C on the mounting shaft 211 of the felt gear applicator 210. The mounting shaft 211 may receive oil 210 from an oil reservoir via oil pipe/hose/channel (not shown). In addition, by virtue of the material known as felt, the circular felt gear lubricant applicator 210 provides an effective cleaning of the rack gear 204 that helps in smooth functioning of rack gear.
[0045] The proposed clutch release system 200 provides efficient working and solves the problem associated with the clutch release system 100 mentioned in the prior art. Here, the fluid is transferred to cylinder 106 through oil channels ( not shown ) . When fluid enters into cylinder 106, fluid exerts force on the clutch actuator piston 104 that results in a linear movement of the piston head 202 over which the rack gear 204 are formed. This linear movement of clutch actuator piston 104 is converted into rotary motion of the clutch release arm 108 by virtue of meshing between rack gear 204 formed on the piston head 202 attached at the front end of the clutch actuator piston 104 and the pinion gear 208 formed on the arm head 206 attached at the upper end of the clutch release arm 108 as shown in FIG.3. The rotary motion of clutch release arm 108 further operates the clutch release bearing 112 through the clutch release shaft that ultimately leading to engagement and disengagement of the clutch
[0046] This clutch release arm 108 moves the clutch release bearing 112 through the clutch release shaft causing it to open the clutch. The clutch gets closed by a spring force of the clutch Belleville spring itself.
[0047] FIG.4 depicts the front and the back view of the clutch release system 200 in accordance with an embodiment of the present disclosure.
[0048] The proposed rack and pinion gear arrangement in the clutch release system 200 is more rigid than a cable and also results in higher load and

stroke transmission efficiency as compared to the cable type mechanism. Moreover, the proposed rack and pinion gear mechanism is also rigid and by virtue of this rigidity, it can transmit force and motion in both directions as compared to, the cable mechanism that transmits force in only one direction.
[0049] It should be noted that the description and figures merely illustrate the principles of the present subject matter. It should be appreciated by those skilled in the art that conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present subject matter. It should also be appreciated by those skilled in the art that by devising various arrangements that, although not explicitly described or shown herein, embody the principles of the present subject matter.
[0050] Furthermore, all examples recited herein are principally intended expressly to be for pedagogical purposes to aid the reader in understanding the principles of the present subject matter and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such specifically recited examples and conditions. The novel features which are believed to be characteristic of the present subject matter, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures.

TECHNICAL ADVANTAGES
[0051] There is a plurality of features which are listed as technical advantages below:
[0052] The present disclosure provides a clutch release system that replaces the clutch cable by a rack and pinion gear arrangement that reduces the risks arises due to bending or breaking of the clutch cable of a vehicle.
[0053] The present disclosure provides the rack and pinion gear arrangement that is flexible enough in converting the linear motion to rotary motion.
[0054] The present disclosure provides the rack and pinion gear mechanism which is rigid and by virtue of this rigidity, it can transmit force and motion in both directions.
[0055] The present disclosure provides circular felt gear lubricant applicator that facilitates in effective cleaning and lubrication of the rack and pinion gear arrangement.
[0056] The present disclosure provides a rubber bellow and a wiper seal that is configured in such a manner that it offers the dual dust protection inside the system.
[0057] The present disclosure provides a spring pin that offers modularity and serviceability to the clutch release system.
[0058] The present disclosure provides a clutch release system for a vehicle which is stronger, having higher load and stroke transmission efficiency and potentially a higher service life.

Reference Numerals
• Clutch actuator piston -104
• Clutch actuator cylinder -106
• Clutch release arm -108
• Ball & Socket Joint-110
• Clutch Release Bearing-112
• Piston head -202
• Rack gear -204
• Arm head -206
• Pinion Gear -208
• Spring pin at the piston head -202-S
• Spring pin at the arm head -206-S
• Circular Felt gear Applicator-210
• Outer Surface of the Circular felt Gear Applicator -210-O
• Inner Surface of the Circular felt Gear Applicator-210-1
• Gear of the circular felt gear applicator- 210-G
• Gear oil of the circular felt gear applicator - 210-L
• Rubber bellow -212
• wiper seal-214
• Felt gear mounting shaft- 211
• Oil channels in the felt gear mounting shaft-211-C

WE CLAIM:

1. A clutch release system (200) for an automated manual
transmission, comprising:
a piston head (202 ) attached to a clutch actuator piston (104), said clutch actuator piston head (202) having an outer body formed with rack gear (204); and
an arm head (206) attached to a clutch release arm (108), said arm head (206) having a top edge formed with pinion gear (208),
wherein the rack gear (204) of the piston head (202) are being meshed with the pinion gear (208) of the arm head (206) for conversion of linear motion of the clutch actuator piston (104) into rotatory motion of the clutch release arm (108).
2. The clutch release system (200) as claimed in claim 1, wherein the rack gear (204) are circular rack gear.
3. The clutch release system (100) as claimed in claim 1, comprising a circular felt gear applicator (210) having gear on outer circumference (210-O) meshed with the rack gear (204) of the piston head (202).
4. The clutch release system (200) as claimed in claim 3, wherein the circular felt gear applicator (210) having an outer surface (210-O) and an inner surface (210-1).
5. The clutch release system (200) as claimed in claim 4, wherein the inner surface (210-1) of the circular felt gear (210) is provided with a gear oil (210-L) and the outer surface (210-O) is provided with the gear(210-G).

6. The clutch release system (200) as claimed in claim 5, wherein the gear (210-G) of the circular felt gear applicator (210) are to release the gear oil (210-L) on the rack gear (204) of the piston head (202).
7. The clutch release system (100) as claimed in claim 1, wherein the piston head (202) is attached to the clutch actuator piston (104) through a spring pin (202-S).
8. The clutch release system (100) as claimed in claim 1, wherein the arm head (206) attached to the clutch release arm (108) through at least a pair of spring pin (206-S).