Description:FORM 2
THE PATENTS ACT, 1970
(39 OF 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
[See section 10, Rule 13]

TITLE OF INVENTION
A Two-Wheeled Vehicle

APPLICANT
TVS MOTOR COMPANY LIMITED, an Indian company, having its address at “Chaitanya”, No.12 Khader Nawaz Khan Road, Nungambakkam, Chennai 600 006.

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

FIELD OF THE INVENTION
[001] The present invention relates to a two-wheeled vehicle. More particularly, the present invention relates to the two-wheeled vehicle for accommodating an immobilizer unit.

BACKGROUND OF THE INVENTION
[002] In recent past, anti-theft device such as an immobilizer unit is provided in motorcycles, as a safety feature. The immobilizer unit typically stores an identification code unique to each motorcycle, provided in an ignition key of the motorcycle. As such, when another ignition key is used, the immobilizer unit electrically inhibits operation of the vehicle, when a mismatch of the identification code is detected, thereby acting as the anti-theft device for the motorcycle.
[003] Typically, the immobilizer unit is provided in an ignition switch. Such an assembly increases size of the ignition switch, which is undesirable. To overcome such problems, the immobilizer unit is separated from the ignition switch and is provided at a front portion or nearer to an engine of the motorcycle. Such an assembly reduces size of the ignition switch. However, due to placement of the immobilizer unit nearer to the engine, signal quality of the immobilizer unit may be affected due to signal interference with power train components of the vehicle, which is detrimental. Furthermore, positioning of the immobilizer unit nearer to the engine may also block ambient air to contact the engine for cooling, which may affect or inhibit cooling of the engine during operation of the motorcycle, which is undesirable.
[004] In view of the above, there is a need for a two-wheeled vehicle which is capable of accommodating the immobilizer unit that addresses one or more limitations stated above.

SUMMARY OF THE INVENTION
[005] In one aspect, a two-wheeled vehicle is disclosed. The frame member comprises a head pipe, a main tube extending rearwardly from the head pipe and a pair of seat rails extending rearwardly from the main tube. The pair of seat rails are adapted to support a seat of the two-wheeled vehicle. A rear fender is positioned above a rear wheel of the two-wheeled vehicle. A mounting portion is provided on a top surface of the rear fender. The mounting portion is configured to support an immobilizer unit of the two-wheeled vehicle, wherein the mounting portion is provided on the top surface such that the immobilizer unit is positioned between the seat rails and below the seat of the two-wheeled vehicle.
[006] In an embodiment, the immobilizer unit comprises a battery unit disposed within the mounting portion and an Electronic Control Unit (ECU) mounted on a side wall of the mounting portion. The ECU being positioned adjacent to the battery unit.
[007] In an embodiment, the ECU is mounted laterally adjacent to the battery unit along a longitudinal direction of the two-wheeled vehicle.
[008] In an embodiment, the mounting portion is provided with a plurality of rib members for supporting the immobilizer unit.
[009] In an embodiment, a locking unit is provided which is adapted to be mounted on the top surface of the rear fender. The locking unit is adapted to secure the immobilizer unit supported on the mounting portion.
[010] In an embodiment, the rear fender is coupled to a rear end portion of the seat rails.
[011] In an embodiment, the mounting portion is defined at a front portion of the rear fender.

BRIEF DESCRIPTION OF THE DRAWINGS
[012] Reference will be made to embodiments of the invention, examples of which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
Figure 1 is a left-side view of a two-wheeled vehicle, in accordance with an exemplary embodiment of the present disclosure.
Figure 2 is a top view of a rear portion of a frame member of the two-wheeled vehicle provided with an immobilizer unit, in accordance with an embodiment of the present disclosure.
Figure 3 is the top view of the rear portion of the frame member depicting a mounting portion for the immobilizer unit provided over a rear fender, in accordance with an embodiment of the present disclosure.
Figure 4 is a perspective view of the rear fender of the two-wheeled vehicle, in accordance with an embodiment of the present disclosure.
Figure 5 is a perspective view of the rear fender of the two-wheeled vehicle, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE INVENTION
[013] Various features and embodiments of the present invention here will be discernible from the following further description thereof, set out hereunder.
[014] Figure 1 illustrates a left side-view of a two-wheeled vehicle 200, in accordance with an embodiment of the present invention. The two-wheeled vehicle 200 (hereinafter referred to as ‘vehicle 200’) comprises an internal combustion engine 214 that is adapted to provide motive force required for movement of the vehicle 200. In an embodiment, the internal combustion engine 214 is preferably a single-cylinder engine. The vehicle 200 has a front wheel 216, a rear wheel 210, a frame member 202 (shown in Figure 2), a seat 206 and a fuel tank 218. In an embodiment, the seat 206 includes a rider seat (not shown) and a pillion seat (not shown). The frame member 202 includes a head pipe (not shown), a main tube (not shown), a down tube (not shown), and a pair of seat rails 204a, 204b (for e.g. as shown in Figure 2). In an embodiment, the seat rail 204a is a seat rail that is extending in a right-side of the vehicle 200 from the main tube, while the seat rail 204b is a seat rail that is extending in a left-side of the vehicle 200 from the main tube. The head pipe supports a steering shaft (not shown) and a fork assembly 220 is attached to the steering shaft through a lower bracket (not shown). The fork assembly 220 supports the front wheel 216. In an embodiment, the fork assembly 220 is a telescopic suspension unit, configured to cushion the front side of the vehicle 200 during travelling and thereby ease handling of the vehicle 200.
[015] A handlebar 222 is fixed to upper bracket (not shown) and can rotate about the steering shaft for turning the vehicle 200. A headlight 224, a visor guard (not shown) and an instrument cluster 226 are arranged on an upper portion of the head pipe. The frame member 202 comprises the down tube that may be positioned in front of the engine 214 and extends slantingly downward from head pipe. The main tube of the frame member 202 is located above the engine 214 and extends rearward from head pipe.
[016] The fuel tank 218 is mounted on the main tube. Seat rails 204a, 204b are joined to the main tube and extend rearward to support the seat 206. A rear swing arm (not shown) is connected to the frame member 202 to swing vertically, and the rear wheel 210 is connected to rear end of the rear swing arm. Generally, the rear swing arm is supported through a shock absorber unit 228. A taillight unit 230 is disposed at the end of the vehicle 200 and at the rear of the seat 206. A grab rail 232 is also provided to the seat rails 204a, 204b. The rear wheel 210 is arranged below the seat 206, rotates by the motive force of the engine 214 transmitted through a chain drive (not shown).
[017] Further, a rear fender 208 is disposed above the rear wheel 210 and coupled to a rear end portions of the seat rails 204a, 204b. An exhaust pipe 234 of the vehicle 200 extends vertically downward from the engine 214 and then extends below the engine 214, longitudinally along length of the vehicle 200 before terminating in a muffler (not shown). The muffler is typically disposed adjoining the rear wheel 210. Additionally, the rear fender 208 is provided with a mounting portion 100 for supporting or mounting an immobilizer unit 102, which will be described in detail with reference to Figures 2-5. Further, the upper portion of the front wheel 216 is covered by a front fender 236 mounted to the fork assembly 220.
[018] In an embodiment, the immobilizer unit 102 comprises a battery unit 104 and an Electronic Control Unit (ECU) 106. The ECU 106 is powered by the battery unit 104 for operation. The ECU 106 may be configured to store an identification code (not shown) unique to the vehicle 200 provided in an ignition key (not shown) of the vehicle 200. As such, when another ignition key is used, the ECU 106 electrically inhibits operation of the vehicle 200, when a mismatch of the identification codes is depicted.
[019] Referring to Figures 2 and 3 in conjunction with Figure 1, a top view of a rear portion of the frame member 202, along with the rear fender 208 is depicted. As indicated, the rear fender 208 is provided with the mounting portion 100 for mounting the immobilizer unit 102 between the seat rails 204a, 204b, thereby ensuring utilization of space in the vehicle 200, while also providing tamper protection and ease of assembly to the immobilizer unit 102 in the vehicle 200.
[020] The mounting portion 100 is provided on a top surface 208a of the rear fender 208. The mounting portion 100 is provided so as to provide support to the immobilizer unit 102. Also, the mounting portion 100 is provided on the top surface 208a of the rear fender 208 such that the immobilizer unit 102 is positioned between the seat rails 204a, 204b and below the seat 206 of the two-wheeled vehicle 200. In an embodiment, the immobilizer unit 102 is positioned between the seat rails 204a, 204b of the vehicle 200 through the mounting portion 100, when viewed from a top side-view of the vehicle 200.
[021] In an embodiment, the mounting portion 100 is provided at a front portion 212 of the rear fender 208. Typically, the space between the seat 206, the seat rails 204a, 204b and the front portion 212 of the top surface 208a of the rear fender 208 is an unused space in the vehicle 200. As such, mounting of the immobilizer unit 102 at the front portion 212 and in-between the seat rails 204a, 204b and below the seat 206 ensures usability of the unused space in the vehicle 200, thereby improving packaging of the vehicle 200.
[022] In an embodiment, the mounting portion 100 is defined through a plurality of walls 108 protruding on the top surface 208a and towards top side of the vehicle 200. The plurality of walls 108 may be provided with a front wall 108a, a rear wall 108b and side walls 108c, 108d (shown in Figure 3). The ends of the plurality of walls 108 are connected with one another to form a hollow portion or a recessed portion, wherein the hollow portion or the recessed portion corresponds to the mounting portion 100. In the present embodiment, upon connection of ends of the plurality of walls 108 with one another, a rectangular shaped mounting portion 100 is formed for supporting or mounting the immobilizer unit 102. In an embodiment, the ends of each of the plurality of walls 108 may be connected to shape the mounting portion 100 as per the shape of the immobilizer unit 102.
[023] In another embodiment, the dimensions of each of the front wall 108a, the rear wall 108b and the side walls 108c, 108d may be considered as per support requirements of the immobilizer unit 102. In the present embodiment, the side wall 108c is provided with a larger height than the side wall 108d, while the front wall 108a and the rear wall 108b connect with the side walls 108c, 108d with a tapered shape in order to form a flush configuration. In an embodiment, the thickness of the plurality of walls 108 may be considered as per strength requirements for mounting or supporting the immobilizer unit 102.
[024] Further, a plurality of ribs 110 (as shown in Figure 3) may be provided within the mounting portion 100, for enhancing structural rigidity of the mounting portion 100. The plurality of ribs 110 may be of a cascaded configuration or a zig-zag configuration or a corrugated configuration as per structural rigidity requirement of the mounting portion 100 for supporting the immobilizer unit 102.
[025] In an embodiment, the battery unit 104 is mounted within the mounting portion 100 (for e.g. as shown in Figure 2), while the ECU 106 is mounted on the side wall 108d. In an embodiment, the ECU 106 may be provided with a clip-like structure, so that the ECU 106 may be clipped onto the side wall 108d, for mounting the ECU 106 onto the side wall 108d. The ECU 106 is also positioned adjacently to the battery unit 104. In an embodiment, the ECU 106 is mounted laterally adjacent to the battery unit 104 along a longitudinal direction (or the front-rear direction) of the vehicle 200. In an embodiment, the ECU 106 upon mounting on the side wall 108d is in-line or in-level when view from a side view of the vehicle 200. Such a positioning of the ECU 106 with respect to the battery unit 104 ensures compact packaging of the immobilizer unit 102.
[026] Referring to Figures 4 and 5 in conjunction with Figures 1-3, a perspective views of the rear fender 208 is depicted. As depicted, a locking unit 112 is mounted on the top surface 208a of the rear fender 208. Accordingly, mounting provisions (not shown) such as apertures (not shown) or slots (not shown) may be provided on the top surface 208a of the rear fender 208 for enabling mounting of the locking unit 112 onto the top surface 208a of the rear fender 208. The locking unit 112 is adapted to secure the immobilizer unit 102 supported on the mounting portion 100. In the present embodiment, the locking unit 112 is provided with arms, wherein the arms surround and grip the immobilizer unit 102, while the ends of the arms are mounted onto the top surface 208a of the rear fender 208. In other words, the locking unit 112 surrounds and grip the battery unit 104 and/or the ECU 106 for mounting the immobilizer unit 102 onto the top surface 208a of the rear fender 208. Thus, upon fastening of the locking unit 112, the immobilizer unit 102 i.e. the battery unit 104 and the ECU 106 are mounted onto the top surface 108a of the rear fender 208.
[027] In an embodiment, an opening 238 is provided at the front portion 212 of the rear fender 208, for enabling fastening or mounting of the front portion 212 with the rear portion of the frame member 202.
[028] In an embodiment, the locking unit 112 is mounted onto the top surface 208a via conventional mounting techniques such as fastening, gluing and the like as per requirement. In the present embodiment, the locking unit 112 is fastened to the top surface 208a of the rear fender 208. In an embodiment, the locking unit 112 is made by a metallic material or a non-metallic material as per requirement.
[029] In an embodiment, during assembly, the seat 206 of the vehicle 200 is removed. At this scenario, the battery unit 104 is placed within the mounting portion 100, while the ECU 106 is supported on the side wall 108d. Upon mounting, the locking unit 112 is placed to surround the immobilizer unit 102 i.e. on battery unit 104 and/or the ECU 106. Upon surrounding, the locking unit 112 is fastened onto the top surface 208a of the rear fender 208, thereby mounting the immobilizer unit 102 onto the top surface 208a of the rear fender 208.
[030] The claimed invention as disclosed above is not routine, conventional or well understood in the art, as the claimed aspects enable the following solutions to the existing problems in conventional technologies. Specifically, the claimed aspects of providing the mounting portion 100 in the vehicle 200 for mounting the immobilizer unit 102, simplifies mounting structure for the immobilizer unit 102. Thus, enabling ease assembly and dismantling of the immobilizer unit 102 during a service requirement. Further, due to positioning of the immobilizer unit 102 on front portion 212 at the top surface 208a of the rear fender 208, between the seat rails 204a, 204b and below the seat 206 ensures utilization of unused or dead space in the vehicle 200, thereby improving packaging of the vehicle 200. Additionally, due to the placement of the immobilizer unit 102 on the rear fender 208, the air flow to the engine 214 is uninterrupted, thereby enhancing air-cooling of the engine 214 and thus consequently improving engine performance. Moreover, placement of the immobilizer unit 102 on the rear fender 208, the interference with engine or power train components are minimized, thereby improving signal reception between the battery unit 104 and the ECU 106, inherently improving signal quality of the immobilizer unit 102.

Reference numerals
100 Mounting portion
102 Immobilizer unit
104 Battery unit
106 Electronic Control Unit
108 Wall of the mounting portion
110 Plurality of rib members
112 Locking unit
200 Two-wheeled vehicle
202 Frame member
204a, 204b Seat rails
206 Seat
208 Rear fender
210 Rear wheel
212 Front portion of rear fender
214 Internal combustion engine
216 Front wheel
218 Fuel tank
220 Fork assembly
222 Handlebar
224 Headlight
226 Instrument cluster
228 Rear shock absorber
230 Taillight unit
232 Grab rail
234 Exhaust pipe
236 Front fender
238 Opening on front portion of rear fender
, Claims:WE CLAIM:
1. A two-wheeled vehicle (200), comprising:
a frame member (202) comprising:
a head pipe;
a main tube extending rearwardly from the head pipe;
a pair of seat rails (204a, 204b) extending rearwardly from the main tube, the pair of seat rails (204a, 204b) adapted to support a seat (206) of the two-wheeled vehicle (200);
a rear fender (208) positioned above a rear wheel (210) of the two-wheeled vehicle (200); and
a mounting portion (100) provided on a top surface (208a) of the rear fender (208), the mounting portion (100) configured to support an immobilizer unit (102) of the two-wheeled vehicle (200), wherein the mounting portion (100) is provided on the top surface (208a) such that the immobilizer unit (102) is positioned between the seat rails (204a, 204b) and below the seat (206) of the two-wheeled vehicle (200).

2. The two-wheeled vehicle (200) as claimed in claim 1, wherein the immobilizer unit (102) comprises:
a battery unit (104) disposed within the mounting portion (100); and
an Electronic Control Unit (ECU) (106) mounted on a side wall (108d) of the mounting portion (100), the ECU (106) being positioned adjacent to the battery unit (104).

3. The two-wheeled vehicle (200) as claimed in claim 2, wherein the ECU (106) is mounted laterally adjacent to the battery unit (104) along a longitudinal direction of the two-wheeled vehicle (200).

4. The two-wheeled vehicle (200) as claimed in claim 1, wherein the mounting portion (100) is provided with a plurality of rib members (110) for supporting the immobilizer unit (102).

5. The two-wheeled vehicle (200) as claimed in claim 1 comprising a locking unit (112) adapted to be mounted on the top surface (208a) of the rear fender (208), the locking unit (112) being adapted to secure the immobilizer unit (102) supported on the mounting portion (100).

6. The two-wheeled vehicle (200) as claimed in claim 1, wherein the rear fender (208) is coupled to a rear end portion of the seat rails (204a, 204b).

7. The two-wheeled vehicle (200) as claimed in claim 1, wherein the mounting portion (100) is defined at a front portion (212) of the rear fender (208).

Dated this 24th day of August 2022
TVS MOTOR COMPANY LIMITED
By their Agent & Attorney

(Nikhil Ranjan)
of Khaitan & Co
Reg No IN/PA-1471