Description:FIELD OF THE INVENTION
[001] The present invention relates to a saddle type vehicle. More particularly, the present invention relates to disposition of a control unit in the saddle type vehicle.

BACKGROUND OF THE INVENTION
[002] Electric vehicles (EVs) have gained significant traction in recent years owing to their eco-friendliness and cost-effectiveness. One crucial component of an EV is the motor controller, responsible for precisely regulating the motor's speed, torque, direction, and horsepower based on inputs from various interfaces such as throttle, brake, and forward/reverse switches. The integration of motor controllers with other electronic control units or devices enhances vehicle performance, packaging efficiency, and cost optimization.
[003] Despite the advancements in electric vehicle technology, the optimal placement of the motor controller within the vehicle remains a challenge. This challenge arises from the requirements on packaging space due to the controller's size, orientation, and proximity to the motor. Current placement solutions often lead to longer cable lengths between the motor controller and the motor, resulting in adverse effects on performance. Additionally, ergonomic considerations, such as lateral width and seat height limitations, further complicate the packaging process of the motor controller within the vehicle. The situation is exacerbated in electric two-wheeler vehicles, where space constraints are heightened, particularly due to the presence of shock absorbers and other mechanical elements.
[004] Conventional placement of the motor controller not only result in longer cable lengths between the motor controller and the motor, thereby causing performance degradation, but also introduce resistance and signal degradation due to the use of longer cables. This compromise in cable length negatively impacts the motor's efficiency and responsiveness. Furthermore, positioning the motor controller behind the motor, especially in electric two-wheeler vehicles, compromises ergonomic factors such as lateral width and seat height limitations. This suboptimal placement not only affects rider comfort and control but also diminishes the overall user experience.
[005] Accordingly, there is a need for a saddle type vehicle that addresses at least the aforementioned problems.

SUMMARY OF THE INVENTION
[006] In one aspect, the present invention is directed towards a saddle type vehicle. The saddle type vehicle has a head pipe and a frame assembly extending rearwardly from the head pipe in a vehicle front-rear direction. The saddle type vehicle further has a control unit being laterally positioned in a pre-defined portion on the frame assembly when viewed in a vehicle longitudinal direction.
[007] In an embodiment, the saddle type vehicle has a suspension member being securely mounted to a first side of the frame assembly. The pre-defined portion corresponds to a second side of the frame assembly, the second side being opposite the first side of the frame assembly.
[008] In an embodiment, the frame assembly comprises a rear frame structure being a Y- shaped member extending rearwardly and upwardly from the frame assembly in the vehicle front-rear direction. The control unit being disposed on the rear frame structure and below a seat assembly such that the frame assembly being disposed between the control unit and the suspension member.
[009] In an embodiment, the control unit being laterally mounted within a pre-defined distance from a vehicle central axis, the vehicle central axis aligning with the longitudinal central axis of the vehicle.
[010] In an embodiment, the saddle type vehicle has a motor. The control unit being disposed on a rear portion of the motor in the vehicle front-rear direction.
[011] In an embodiment, the control unit being a motor control unit. The motor control unit being integrated to an electronic control unit and operatively connected to a motor of the vehicle.
[012] In an embodiment, the motor control unit being configured to control one of speed, torque, direction and horsepower of the motor in the vehicle.
[013] In an embodiment, the control unit being powered by an auxiliary power unit.
[014] In an embodiment, the control unit being integrated to one of an inertial measurement unit sensor, a telematics control unit, a body control unit and a Controller Area Network (CAN) module.
[015] In an embodiment, the control unit comprises one or more connectors disposed on a lateral surface of the control unit accessible from the vehicle side.
[016] In an embodiment, the saddle type vehicle has a mounting unit. The mounting unit has a mounting face being adapted to receive the control unit and an opposite face being adapted to affix on a portion of the frame assembly of the vehicle through a plurality of fastening means.
[017] In an embodiment, the rear frame structure comprises at least a cover adapted to enclose the control unit.

BRIEF DESCRIPTION OF THE DRAWINGS
[018] 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 illustrates a side view of a frame assembly of a saddle type vehicle, depicting a control unit being disposed on the frame assembly, in accordance with an embodiment of the present invention.
Figure 2 illustrates a perspective view of the frame assembly of the saddle type vehicle, depicting the control unit being disposed on the frame assembly, in accordance with an embodiment of the present invention.
Figure 3 illustrates a side view of the saddle type vehicle, depicting a suspension member being disposed on the frame assembly, in accordance with an embodiment of the present invention.
Figures 4 illustrates a top view of the saddle type vehicle, depicting the control unit and the suspension member being disposed on the frame assembly, in accordance with an embodiment of the present invention.
Figure 5 illustrates a perspective view of the control unit, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION
[019] The present invention generally relates to a saddle type vehicle. More particularly, the present invention relates to disposition of a control unit in the saddle type vehicle. In an embodiment, the saddle type vehicle is an Electric Vehicle (EV). The control unit of the EV is also known as “Motor Controller”, “Motor cum Vehicle Controller”, “Electric Vehicle Controller” or “Integrated Vehicle Controller Unit”.
[020] In the present disclosure, arrow indications provided in Figures pertain to directional indications of the saddle type vehicle. As such, the terms “front side”, “rear side”, “right side”, “left side”, “upside” and “downside” respectively correspond to front, rear, right, left, up and down sides of the saddle type vehicle, until and unless specified otherwise.
[021] Figure 1 illustrates a side view of a frame assembly 104 of a saddle type vehicle 100, in accordance with an embodiment of the invention. In the present embodiment, the saddle type vehicle 100 (hereinafter referred to as ‘vehicle 100’) is a motorcycle or a saddle type vehicle or an Electric Vehicle.
[022] The vehicle 100 comprises a head pipe 102 and the frame assembly 104. The head pipe 102 is located at a front side of the vehicle 100 in a vehicle front-rear direction. The head pipe 102 supports a steering shaft (not shown) of the vehicle 100. The frame assembly 104 extends rearwardly from the head pipe 102 in a vehicle front-rear direction. One side of the frame assembly 104 in a vehicle lateral direction is referred to as a first side of the frame assembly 104. The opposite side of the frame assembly 104 in a vehicle lateral direction is referred to as a second side of the frame assembly 104. That is, the second side of the frame assembly 104 being opposite the first side of the frame assembly 104. In an embodiment, the frame assembly 104 is a backbone type frame structure. In a backbone type frame structure, a main tube (not shown) having higher diameter/thickness extends from the head pipe 102 along the vehicle length rearwardly and may either cover the entire vehicle length or be connected to a rear frame portion. The weight associated with the backbone type frame structure is significantly lower than a trellis type frame. In electric vehicles, the overall vehicle weight owing to frame weight is of particular significance in order to maintain a good weight to power ratio of the vehicle 100.
[023] The frame assembly 104 further includes a suspension member 108. The suspension member 108 is securely mounted to the first side of the frame assembly 104. In an embodiment, the suspension member 108 is a mono-shock suspension member. Further, the vehicle 100 has a seat assembly (not shown) supported by the frame assembly 104.
[024] As seen in Figure 1, the frame assembly 104 further comprises a rear frame structure 104a. The rear frame structure 104a being a Y-shaped member extending rearwardly and upwardly from the frame assembly 104 in the vehicle front-rear direction. The vehicle 100 further comprises a motor 110 disposed on a rear portion of the vehicle 100 when viewed in the vehicle front-rear direction. In an embodiment, the motor 110 is a mid-region mounted motor. The mid-region mounted motor is disposed in a middle region of the vehicle 100 and mounted on the frame assembly 104 either directly or through a bracket. In an embodiment, the function of the motor in the electric vehicle is to convert electrical energy stored in a vehicle's battery into mechanical energy, which propels the vehicle forward. When electric current flows through the motor's coils, it generates a magnetic field that interacts with electromagnets, causing the rotor to spin. This rotational motion is then transferred to the vehicle's wheels, allowing it to move. The speed, torque, and direction of the motor 110 is precisely controlled by the vehicle's motor controller, ensuring efficient and responsive propulsion. Overall, the motor serves as the primary power source for electric vehicles, enabling them to operate with zero emissions and providing smooth and quiet propulsion compared to traditional internal combustion engines.
[025] Referring to Figure 2 in conjunction with Figure 1, the vehicle 100 further comprises a control unit 106. The control unit 106 is laterally mounted within a pre-defined distance from a vehicle central axis. The vehicle central axis aligning with a longitudinal central axis (X-X’) of the vehicle 100. In an embodiment, the minimum distance between the control unit 106 and the vehicle central axis is 35 mm. Specifically, the control unit 106 is laterally positioned in a pre-defined portion on the frame assembly 104 when viewed in a vehicle longitudinal direction X-X’. In an embodiment, the pre-defined portion corresponds to the second side of the frame assembly 104. The second side of the frame assembly 104 is the side opposite the first side of the frame assembly 104 with the suspension member 108. In an embodiment, the control unit 106 is disposed on the rear frame structure 104a and below the seat assembly such that the frame assembly 104 being disposed between the control unit 106 and the suspension member 108 (shown in Figure 4). The lateral offset disposition of the control unit 106 does not disrupt vehicle stability owing to off-set of unsprung mass since the control unit 106 is enveloped by the rear frame structure 104a when the vehicle is viewed from the top. In an embodiment, the mass of the control unit 106 is in the range of 3-5 kilograms.
[026] Further, the control unit 106 is disposed on a rear portion of the motor 110 when viewed in the vehicle front-rear direction. Such disposition of the control unit 106 in close proximity to the motor 110, the power train efficiency of the vehicle is maintained. Further, the present invention provides optimization of the wiring harness length between the control unit 106 and the vehicle's sub-systems thereby minimizing signal degradation and improves overall system performance. In an embodiment, the control unit 106 is disposed partially on the rear portion of the motor 110 when viewed in the vehicle front-rear direction. In another embodiment, the control unit 106 is disposed partially or fully below the seat assembly. In yet another embodiment, the control unit 106 is disposed partially or fully above a swingarm (not shown) of the vehicle 100. Further, the rear frame structure 104a comprises a cover (not shown) adapted to enclose control unit 106, thereby providing protection against environmental factors, such as dust, moisture, and physical impacts, safeguarding the delicate electronic components within the control unit 106 and ensuring reliable operation in various operating conditions.
[027] In an embodiment, the control unit 106 is a motor controller with a vehicle control unit where along with traction characteristics of the vehicle, the diagnosis of electrical subsystems of the vehicle are incorporated. The motor controller communicates with the motor 110 or other power train components wherein the power is being drawn from a traction battery of the vehicle. In another embodiment, the control unit 106 is a motor control unit being integrated to an electronic control unit and operatively connected to a motor 110 of the vehicle 100. In an embodiment, the control unit 106 is integrated to an inertial measurement unit sensor, a telematics control unit, a body control unit and a Controller Area Network (CAN) module. The control unit 106 is powered by an auxiliary power unit (not shown) of the vehicle 100.
[028] Referring to Figure 3 illustrating a side view of the saddle type vehicle, depicting a suspension member 108 being disposed on the frame assembly 104, in accordance with an embodiment of the present invention. The frame assembly 104 further includes a suspension member 108. The suspension member 108 is securely mounted to the first side of the frame assembly 104. In an embodiment, the suspension member 108 is a mono-shock suspension member. The suspension member 108 is mounted below the rear frame structure 104a and onto the first side of the frame assembly 104 of the vehicle 100. Figures 4 illustrates a top view of the saddle type vehicle, depicting the control unit 106 and the suspension member 108 being disposed on the frame assembly 104, in accordance with an embodiment of the present invention. As seen in Figure 4, the frame assembly 104 is disposed between the control unit 106 and the suspension member 108. Therefore, by positioning the suspension member 108 on one side of the frame assembly 104 and the control unit 106 on the opposite side, the present invention effectively manages the overall weight distribution. This consideration is crucial for maintaining vehicle stability, particularly concerning unsprung mass, without compromising safety and aesthetic features of the vehicle 100.
[029] Referring to Figure 5 in conjunction with Figures 1-4, the vehicle 100 a mounting unit 114. The mounting unit 114 comprises a mounting face being adapted to receive the control unit 106 and an opposite face being adapted to affix on a portion of the frame assembly 104 of the vehicle through a plurality of fastening means 116. In an embodiment, the control unit 106 is directly mounted onto the frame assembly 104. The control unit 106 is mounted below the rear frame structure 104a. In an example, for mounting the control unit 106 threaded holes may be accommodated in the frame assembly 104. The fastening member such as a nut is inserted through recess provide on the control unit 106 and the frame assembly 104, where it engages with the threaded portion of the frame assembly 104 and securely mounts the control unit 106 onto the frame assembly 104 directly. In an embodiment, the mounting unit 114 is affixed to the frame assembly 104 through a conventional technique known in the art such as welding, riveting by set of nuts and the like and the mounting face of the mounting unit 114 being adapted to receive the control unit 106 through a conventional fastening technique.
[030] As seen in Figure 5, the control unit 106 further comprises one or more connectors 112 disposed on a lateral surface of the control unit 106 accessible from the vehicle side. Due to the motor 110 being situated on side surface of the frame assembly 104, the placement of connectors 112 on the lateral surface of the control unit 106 facilitates ease of connection between the control unit 106 and the motor 110, thereby reducing wire length. Additionally, the advantage of having connectors 112 disposed on a lateral surface of the control unit 106 and accessible from the vehicle side is enhanced accessibility for maintenance and servicing tasks of the control unit 106 of the vehicle 100.
[031] 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. The present invention provides optimization of the wiring harness length between the control unit and the vehicle's sub-systems. This optimization minimizes signal degradation and improves overall system performance. Further, the optimized wiring harness length and minimized signal degradation ensure that power train efficiency is maintained. This optimization maximizes the vehicle's overall energy efficiency and performance.
[032] The offset disposition of the control unit and mounting on the frame assembly as claimed in the present invention ensures ease of assembly and disassembly. This feature streamlines maintenance processes, reducing downtime and associated costs.
[033] Further, by positioning the suspension member on one side of the vehicle and the control unit on the opposite side, the present invention effectively manages the overall weight distribution. This consideration is crucial for maintaining vehicle stability, particularly concerning unsprung mass, without compromising aesthetic features of the vehicle. Properly balanced vehicle CG and ergonomic design ensure a comfortable ride for the user, minimizing fatigue and enhancing overall driving experience. Furthermore, the cover panels over the rear frame structure 104a provide added protection to the control unit against vibrations and external impacts. This protective measure enhances the longevity and reliability of the control unit, reducing the risk of premature failure.
[034] Additionally, the reduction in wire and cable length results in a decrease in overall vehicle weight. This weight reduction enhances fuel efficiency and contributes to improved handling and maneuverability. Furthermore, the disposition of the control unit as claimed in the present invention does not interfere with the rider’s body during vehicle operation. The control unit of the present invention features connectors located on its side surface, facilitating ease of connection to the motor and enhanced accessibility.
[035] Additionally, accessibility to the control unit in the present invention is enhanced through the rear frame structure, requiring only the removal of the seat member. This accessibility streamlines maintenance procedures, ensuring prompt and efficient servicing.
[036] While the present invention has been described with respect to certain embodiments, it will be apparent to those skilled in the art that various changes and modification may be made without departing from the scope of the invention as defined in the following claims.

List of Reference Numerals
100: Vehicle
102: Head Pipe
104: Frame assembly
104a: Rear Frame Structure
106: Control Unit
108: Suspension Member
110: Motor
112: Connectors
114: Mounting Unit
116: Fastening means , Claims:WE CLAIM:
1. A saddle type vehicle (100), comprising:
a head pipe (102);
a frame assembly (104) extending rearwardly from the head pipe (102) in a vehicle front-rear direction; and
a control unit (106) being laterally positioned in a pre-defined portion on the frame assembly (104) when viewed in a vehicle longitudinal direction (X-X’).

2. The saddle type vehicle (100) as claimed in claim 1 comprising a suspension member (108) being securely mounted to a first side of the frame assembly (104), wherein the pre-defined portion corresponds to a second side of the frame assembly (104), the second side being opposite the first side of the frame assembly (104).

3. The saddle type vehicle (100) as claimed in claim 2, wherein the frame assembly (104) comprises a rear frame structure (104a) being a Y- shaped member extending rearwardly and upwardly from the frame assembly (104) in the vehicle front-rear direction, wherein the control unit (106) being disposed on the rear frame structure (104a) and below a seat assembly such that the frame assembly (104) being disposed between the control unit (106) and the suspension member (108).

4. The saddle type vehicle (100) as claimed in claim 1, wherein the control unit (106) being laterally mounted within a pre-defined distance from a vehicle central axis, the vehicle central axis aligning with the longitudinal central axis (X-X’) of the vehicle (100).

5. The saddle type vehicle (100) as claimed in claim 1 comprising a motor (110), wherein the control unit (106) being disposed on a rear portion of the motor (110) in the vehicle front-rear direction.

6. The saddle type vehicle (100) as claimed in claim 1, wherein the control unit (106) being a motor control unit, the motor control unit being integrated to an electronic control unit and operatively connected to a motor (110) of the vehicle (100).

7. The saddle type vehicle (100) as claimed in claim 5, wherein the motor control unit being configured to control one of speed, torque, direction and horsepower of the motor (110) in the vehicle (100).

8. The saddle type vehicle (100) as claimed in claim 1, wherein the control unit (106) being powered by an auxiliary power unit.

9. The saddle type vehicle (100) as claimed in claim 1, wherein the control unit (106) being integrated to one of an inertial measurement unit sensor, a telematics control unit, a body control unit and a Controller Area Network (CAN) module.

10. The saddle type vehicle (100) as claimed in claim 1, wherein the control unit (106) comprises one or more connectors (112) disposed on a lateral surface of the control unit (106) accessible from the vehicle side.

11. The saddle type vehicle (100) as claimed in claim 1 comprising a mounting unit (114), wherein the mounting unit (114) comprises a mounting face being adapted to receive the control unit (106) and an opposite face being adapted to affix on a portion of the frame assembly (104) of the vehicle through a plurality of fastening means (116).

12. The saddle type vehicle (100) as claimed in claim 1, wherein the rear frame structure (104a) comprises at least a cover adapted to enclose the control unit (106).

Dated this 21st day of March 2024
TVS MOTOR COMPANY LIMITED
By their Agent & Attorney

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