Adjustable frame of a vehicle

Abstract

The present invention discloses a vehicle (100, 600). The vehicle includes a front ground engaging member (106), a rear ground engaging member (122), and a body frame (102). The body frame (102) includes a head tube (116), a main frame (118), a rear frame member (120). The rear frame member is mounted to the main frame. Further, the vehicle includes a pivot frame assembly (124). The pivot frame assembly (124) includes a first pivot frame member (202) and a second pivot frame member (204). The vehicle includes a swing arm (128) swingably coupled the rear ground engaging member (122) to the pivot frame assembly (124). A front frame member (616) is configured with a coupling mechanism (632). The coupling mechanism (632) removably engages with one set of engagement member of a set of engagement members (812A, 812B, 812C) for coupling the front frame member to a pivot frame member (624).

Description

DescriptionTitle of Invention: ADJUSTABLE FRAME OF A VEHICLECross-reference to related applications

[0001] This application claims priority from Indian provisional patent application 20231 1074280, filed on 31 st October 2023, and Indian provisional patent application 20231 1074281 filed on 31 -October 2023 which is incorporated herein in its entirety by this reference thereto.Technical Field

[0002] The present invention relates to a vehicle and, more particularly relates to an adjustable frame structure of the vehicle (e.g., a two-wheeled vehicle such as an electric vehicle (EV).Background

[0003] A vehicle (e.g., a two-wheeled vehicle such as EV) includes one or more components mounted to a body frame (or chassis). The body frame has a rigid structure and is capable of withstanding a static and dynamic load of the one or more components mounted thereto.

[0004] Currently, vehicle manufacturers designed a vehicle considering an average rider ergonomics such as rider height, vehicle riding posture of the rider, rider’s leg rest position and rider’s handle gripping position etc., and the vehicle comes with fixed vehicle size or with limited vehicle adjustability options such as seat height adjustment and a handle bar adjustment of the vehicle. However, these adjustments are independent to each other, moreover adjustments are complex and provide limited adjustability to the rider. In other words, the existing frame structure naturally cannot accommodate different rider ergonomics. The limited adjustability associated with the conventional vehicles may lead to poor riding posture of the rider. As a result, the rider may experience discomfort while riding the vehicle and this may cause knee or back pain. Further, it became impossible for a rider to ride the vehicle for a long touring purpose.SUMMARY

[0005] This summary is provided to introduce a selection of concepts in a simplified form that is further described below in the Detailed Description. This Summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

[0006] In order to solve the foregoing problem and to provide other advantages, one aspect of the present invention is to provide a vehicle. The vehicle includes a front ground engaging member, a rear ground engaging member, and a body frame. The body frame includes a head tube, a main frame, and a rear frame member. The main frame extends rearwardly from the head tube. The rear frame member is mounted to the main frame and extends rearwardly. Further, the vehicle includesa pivot frame assembly. The pivot frame assembly includes a first pivot frame member and a second pivot frame member. Furthermore, the vehicle includes a swing arm swingably coupled the rear ground engaging member to the second pivot frame member. The first pivot frame member includes a proximal end and a distal end. The proximal end is coupled to the main frame. Further, the first pivot frame member adjustably engages with the second pivot frame member.

[0007] In an aspect, the first pivot frame member adjustably engages with the second pivot frame member along a length of the first pivot frame member. Further, the distal end is positioned within the second pivot frame member and the first pivot frame member adjustably engages with the second pivot frame member.

[0008] In an aspect, the vehicle includes a linkage member. The linkage member includes a proximal portion pivotally coupled to the rear frame member and a distal portion pivotally coupled to the second pivot frame member of the pivot frame assembly.

[0009] In an aspect, the linkage member includes a first linkage member, a second linkage member, and at least one interconnecting linkage member coupled between the first linkage member and the second linkage member.

[0010] In an aspect, the first pivot frame member of the pivot frame assembly is configured with a plurality of engagement members at regular intervals throughout a length of the first pivot frame member.

[0011] In an aspect, the pivot frame assembly further includes a height adjustment member. The height adjustment member is mounted to a top portion of the second pivot frame member. The height adjustment member includes a top part, a bottom part and a flange member. The bottom part is coupled to the top part. The bottom part is configured with an operating knob for rotatably operating the height adjustment member. The flange member is operatively coupled between the top part and the bottom part. The flange member is disposed in a space defined between the top part and the bottom part.

[0012] In an aspect, the height adjustment member is configured to be rotatably operated at the top portion of the second pivot frame member to selectively engage the flange member with an engagement member of the plurality of engagement members of the first pivot frame member for adjusting a length dimension of the first pivot frame member.

[0013] In an aspect, adjusting the length dimension of the first pivot frame member by selectively engaging the flange member with the plurality of engagement members results in adjusting a height dimension of the vehicle.

[0014] In an aspect, the height adjustment member is rotatably operated in a first direction for allowing the flange member to disengage from an engagement member of the plurality of engagement members, thereby allowing the first pivot frame member to slide along its length in a longitudinal direction of the second pivot frame member. Further, the height adjustment member is rotatably operated in a second direction for allowing the flange member to removably engage with anengagement member of the plurality of engagement members. The flange member removably engages with the engagement member when the engagement member is aligned axially to the aperture defined in the second pivot frame member.

[0015] In an aspect, the linkage member pivotally coupled to the pivot frame assembly is pivoted corresponding to the length dimension of the first pivot frame member being adjusted by selectively engaging the flange member with the plurality of engagement members.

[0016] In an aspect, the vehicle further includes a rear suspension member. The rear suspension member includes a first end coupled to a support structure of the second pivot frame member located proximate to a top portion of the second pivot frame member. Further, the rear suspension member includes a second end coupled to the swing arm via a connecting rod member.

[0017] In an aspect, the rear suspension member is configured to be rotatably operated corresponding to the rotation of a height adjustment member mounted to the pivot frame assembly for selectively engaging with the plurality of engagement members.

[0018] In an aspect, the second pivot frame member includes a mounting structure mounted to a bottom side of the pivot frame assembly for receiving a power unit including one or more battery modules.

[0019] In another aspect of the present invention, there is provided a vehicle. The vehicle includes a front ground engaging member and a rear ground engaging member. Further, the vehicle includes an adjustable frame structure. The adjustable frame structure includes a head tube, a front frame member, a pivot frame member, and a rear frame member. The front frame member extends rearwardly from the head tube. The rear frame member extends rearwardly from the front frame member. The pivot frame member is adjustably coupled to the front frame member. The pivot frame member is configured with a set of engagement members. Further, the vehicle includes a swing arm swingably coupled the rear ground engaging member to the pivot frame member. The front frame member is configured with a coupling mechanism. The coupling mechanism is configured to removably engage with one set of engagement member of the set of engagement members for coupling the front frame member to the pivot frame member.

[0020] In an aspect, the pivot frame member includes a first pivot frame and a second pivot frame. The first pivot frame and the second pivot frame adjustably coupled to the front frame member obliquely extend in a rearward direction from the front frame member.

[0021] In an aspect, the front frame member includes a first front frame and a second front frame. The first front frame and the second front frame extend obliquely in a rearward direction from the head tube.

[0022] In an aspect, the coupling mechanism is located at a distal portion of each of the first front frame and the second front frame of the front frame member.

[0023] In an aspect, the first pivot frame and the second pivot frame of the pivot frame member are disposed in a space defined between the first front frame and the second front frame. The coupling mechanism is configured to removably engage with the one set of engagement member of the set of engagement members for coupling the first pivot frame and the second pivot frame to the first front frame and the second front frame, respectively.

[0024] In an aspect, the pivot frame member further includes a cross member interconnecting the first pivot frame and the second pivot frame of the pivot frame member at a proximal portion of the pivot frame member.

[0025] In an aspect, each of the first pivot frame and the second pivot frame is configured with a set of guide groove paths to define the set of engagement members between a proximal portion and a central portion of the pivot frame member.

[0026] In an aspect, the rear frame member includes a first rear frame and a second rear frame. The first rear frame and the second rear frame extends obliquely in a substantially upward direction from a first front frame and a second front frame of the front frame member, respectively. Further, the first rear frame and the second rear frame extending from the corresponding first front frame and second front frame are oriented towards a symmetrical axis of the front frame member, thus enabling a top portion of each of the first rear frame and the second rear frame to be juxtaposed.

[0027] In an aspect, each of the first rear frame and the second rear frame is configured with a plurality of slots on a top surface of each of the first rear frame and the second rear frame for allowing mounting of an auxiliary frame structure to the first rear frame and the second rear frame.

[0028] In an aspect, the coupling mechanism includes a set of coupling members and a linkage member interlinking the set of coupling members, thereby enabling the set of coupling members to be removably coupled with one set of engagement member of the set of engagement members configured in the first pivot frame and the second pivot frame.

[0029] In an aspect, selectively engaging the set of coupling members of the coupling mechanism with the one set of engagement member of the set of engagement members of the first pivot frame and the second pivot frame results in adjusting a height dimension of the vehicle.

[0030] In an aspect, a set of engagement member is positioned at a predetermined distance from a set of engagement member. The set of engagement member is positioned at a predetermined distance from a set of engagement member.

[0031] In an aspect, the vehicle further includes a rear suspension member coupled between the pivot frame member and the swing arm.

[0032] In an aspect, the head tube, the first front frame, and the second front frame are a unitary structure. Further, the front frame member is made of die casting.

[0033] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects,embodiments, and features will become apparent by reference to the drawings and the following detailed description.BRIEF DESCRIPTION OF THE FIGURES

[0034] The invention itself, together with further features and advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present invention are now described, by way of example only wherein like reference numerals represent like elements and in which:

[0035] Figure 1 illustrates a perspective view of a vehicle, in accordance with an embodiment of the present invention;

[0036] Figure 2A illustrates a perspective view of a body frame of the vehicle, in accordance with an embodiment of the present invention;

[0037] Figure 2B illustrates an exploded perspective view of a pivot frame assembly of the body frame of Figure 2A, in accordance with an embodiment of the present invention;

[0038] Figure 2C illustrates a cross-section of the pivot frame assembly when components of the pivot frame assembly of Figure 2A are assembled in the pivot frame assembly, in accordance with an embodiment of the present invention;

[0039] Figures 3A, 3B, and 3C represent articulation of a height adjustment member for selectively engaging with an engagement member of a first pivot frame member for adjusting a height dimension of the vehicle, in accordance with an embodiment of the present invention;

[0040] Figures 4A and 4B represent a sectional view of the pivot frame assembly depicting a length adjustment of the first pivot frame member of the pivot frame assembly, in accordance with an embodiment of the present invention;

[0041] Figures 5A and 5B represent a side view of the vehicle depicting a height adjustment of the vehicle, in accordance with another embodiment of the present invention;

[0042] Figure 6A illustrates a perspective view of the vehicle, in accordance with another embodiment of the present invention;

[0043] Figure 6B illustrates a top plan view of the vehicle of Figure 6A, in accordance with another embodiment of the present invention;

[0044] Figure 7 illustrates a perspective view of a front frame member of the vehicle of Figure 6A, in accordance with an embodiment of the present invention;

[0045] Figure 8 illustrates a perspective view of a pivot frame member of the vehicle of Figure 6A, in accordance with an embodiment of the present invention;

[0046] Figure 9A illustrates a cross-section of a top plan view of the front frame member adjustably coupled to the pivot frame member, in accordance with an embodiment of the present invention;

[0047] Figure 9B illustrates a cross-section of a perspective view of the front frame member adjustably coupled to the pivot frame member, in accordance with an embodiment of the present invention; and

[0048] Figures 10A and 10B represent a side view of the vehicle of Figure 6A, depicting a height adjustment of the vehicle, in accordance with another embodiment of the present invention.

[0049] The drawings referred to in this description are not to be understood as being drawn to scale except if specifically noted, and such drawings are only exemplary in nature.DETAILED DESCRIPTION

[0050] While the invention is susceptible to various modifications and alternative forms, a specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however, that it is not intended to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and the scope of the invention.

[0051] The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, device, or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.

[0052] For a better understanding of this invention, a reference would now be made to the embodiment illustrated in the accompanying figures and description herein below. Further, in the following figures, the same reference numerals are used to identify the same components in various views.

[0053] While the present invention is illustrated in the context of a two-wheeled or saddle-riding type vehicle, however, an apparatus and aspects and features thereof can be used with other types of vehicles as well. It is to be noted that terms such as “scooter-type vehicle”, “two-wheeled vehicle” and “vehicle” are interchangeably used throughout the description. The term “vehicle” includes vehicles such as motorcycles, scooters, bicycles, mopeds, all-terrain vehicles (ATVs), and the like.

[0054] The terms “front I forward”, “rear I rearward I back I backward”, “up I upper I top / upward”, “down I lower I lowerward I downward”, “left I leftward”, “right I rightward” used therein represents the directions as seen from a vehicle rider sitting astride and these directions are referred by arrows Fr, Rr, U, Lr, L, R in the drawing figures.

[0055] The term “left side” used therein represents a left side of the vehicle as seen from a rider seated astride to drive the vehicle.

[0056] The term “right side” used therein represents a right side of the vehicle as seen from the rider seated astride to drive the vehicle.

[0057] Figure 1 illustrates a perspective view of a vehicle (100), in accordance with an embodiment of the present invention. The vehicle (100) referred to herein, embodies a two-wheeled motorcycle such as an electric vehicle (EV). Alternatively, the vehicle (100) may embody any other ridden vehicles such as scooters, all-terrain vehicles (ATVs), etc. without limiting the scope of the invention.

[0058] The vehicle (100) includes a body frame (102). The body frame (102) may be made of materials such as, but not limited to, steel, aluminum alloy, and the like. The body frame (102) is designed with optimum mechanical strength and reinforcement for supporting different load capacity and allow mounting of one or more components (e.g., a power unit, electric components, etc.) of the vehicle (100).

[0059] Further, the vehicle (100) includes a steering assembly (104), and a front ground engaging member (106). The body frame (102) supports the steering assembly (104) and the front ground engaging member (106) in a front portion (108) of the vehicle (100). The front ground engaging member (106) is operatively coupled to the steering assembly (104) of the body frame (102). The steering assembly (104) includes a handlebar (1 10). The handlebar (1 10) is configured to be rotated in a left and right directions by a rider to steer the vehicle (100). Moreover, the vehicle (100) includes a pair of footrest (1 12) for the rider riding the vehicle (100).

[0060] The vehicle (100) further includes a pair of left and right front fork members (1 14) attached to a head tube (1 16) of the body frame (102). It is to be noted that the pair of left and right front fork members (1 14) is attached to the head tube (1 16) in a steerable manner by means of a steering shaft (not shown in Figures). The pair of left and right front fork members (1 14) is provided with front suspensions for shock-absorption of the front ground engaging member (106), thereby preventing the transfer of shocks to the body frame (102).

[0061] Further, the body frame (102) includes a main frame (1 18) extending rearwardly from the head tube (1 16). In other words, the main frame (1 18) extends obliquely rewards from the head tube (1 16). In an embodiment, the head tube (1 16) and the main frame (1 18) extending rearwardly from the head tube (1 16) may form a unitary structure. In another embodiment, the main frame (1 18) may be coupled to the head tube (1 16) using conventional fastening means. Some examples of the conventional fastening means may include bolt-nut system, rivets, rivets, Allen bolts, and the like.

[0062] The body frame (102) further includes a rear frame member (120) mounted to the main frame (1 18). The rear frame member (120) mounted to the main frame (1 18) extends rearwardly towards a rear portion (130) of the vehicle (100) in a horizontal direction (Z1 ). The rear frame member (120) may be adapted to support a seat member (not shown in Figures). The seat member may include a rider seat and a pillion rider seat (not shown in Figures). The rider seat provides seating for the rider and the pillion rider seat provides seating for a pillion rider. In the illustrated embodiment, a rear ground engaging member (122) underlies the pillion rider seat.

[0063] Further, the body frame (102) includes a pivot frame assembly (124). The pivot frame assembly(124) is coupled to the main frame (1 18). The pivot frame assembly (124) is pivotally coupled to therear frame member (120) via a linkage member (126). The pivot frame assembly (124) may be operated to adjust a height dimension of the body frame (102) or the vehicle (100) which will be explained further in detail.

[0064] Referring to Figure 2A, the pivot frame assembly (124) includes a first pivot frame member (202) and a second pivot frame member (204). The first pivot frame member (202) is slidably engaged with the second pivot frame member (204) (as shown in Figure 2C). The first pivot frame member (202) includes a proximal end (206) and a distal end (see, 224 of Figure 2B). The proximal end (206) is coupled to the main frame (1 18) using conventional coupling means (as shown in Figure 2A). The distal end (224) is positioned within the second pivot frame member (204) while the first pivot frame member (202) adjustably engages with the second pivot frame member (204). The distal end (224) of the first pivot frame member (202) may be configured with a limiting member (not shown in Figures). The limiting member may be configured to prevent detachment of the first pivot frame member (202) from the second pivot frame member (204) while the first pivot frame member (202) adjustably engages with the second pivot frame member (204). In the illustrated embodiment, the first pivot frame member (202) and the second pivot frame member (204) slidably engaged with each other correspond to a telescopic configuration.

[0065] Further, the first pivot frame member (202) is configured with a plurality of engagement members (208) throughout a length (L) of the first pivot frame member (202) (as shown in Figure 2B). In one embodiment, the engagement members (208) may be configured at regular intervals (or continuous manner) throughout the length (L) of the first pivot frame member (202). In another embodiment, the engagement members (208) may be configured at discrete locations throughout the length (L) of the first pivot frame member (202). In the illustrated embodiment, the engagement members (208) are configured as holes. Alternatively, the engagement members (208) may include slots, grooves, and the like.

[0066] Referring to Figure 2B in conjunction with Figure 2A, the pivot frame assembly (124) further includes a height adjustment member (210) mounted to the second pivot frame member (204). It is to be noted that the coupling of the height adjustment member (210), the first pivot frame member (202) and the second pivot frame member (204) forms an interference fit (as shown in Figure 2C). Further, the height adjustment member (210) includes a top part (see, 228A), a bottom part (see, 228B) and a flange member (see, 228C). The flange member 228C is disposed in a space (see, 228E) defined between the top part (228A) and the bottom part (228B). In one embodiment, the top part (228A) and the bottom part (228B) may be a unitary structure including the space (228E) therebetween for securing the flange member (228C). In another embodiment, the top part (228A) and the bottom part (228B) may be modular, and are coupled together using conventional coupling means to form the height adjustment member (210).

[0067] Furthermore, the height adjustment member (210) is mounted to a top portion (see, 226 of Figure 2B) of the second pivot frame member (204). The top portion (226) is configured with an aperture (248) throughout a circumference of the second pivot frame member (204). Thus, whenthe height adjustment member (210) is mounted to the top portion (226) of the second pivot frame member (204), the aperture (248) allows the flange member (228C) to pass therethrough for removably engaging with the engagement members (208). In an embodiment, the flange member (228C) may be spring loaded. The flange member (228C) configured with spring loaded mechanism includes self-locking quick release functionality which facilitates the flange member (228C) to engage and disengage from the engagement members (208) while the height adjustment member (210) is rotatably operated at the top portion (226) of the second pivot frame member (204). In particular, the bottom part (228B) of the height adjustment member (210) includes an operating knob (228D) for rotatably operating the height adjustment member (210). To that effect, the flange member (228C) positioned in the space (228E) is capable of selectively engaging with an engagement member of the plurality of engagement members (208). This results in adjusting the length dimension of the first pivot frame member (202) which will be explained further in detail.

[0068] Further, the linkage member (126) includes a proximal portion (212A) pivotally coupled to the rear frame member (120). The linkage member (126) further includes a distal portion (212B) pivotally coupled to the second pivot frame member (204). In particular, the second pivot frame member (204) includes a support structure (216) configured on a top side (see, 230 of Figure 2B) and located proximate to the top portion (226) of the second pivot frame member (204).

[0069] The linkage member (126) includes a first linkage member (214A), a second linkage member (214B), and at least one interconnecting linkage member (214C) coupled between the first linkage member (214A) and the second linkage member (214B). The first linkage member (214A) and the second linkage member (214B) interconnected by the interconnecting linkage members (214C) are separated by a distance (D). In other words, the interconnecting linkage members (214C) are configured with a length dimension equivalent to the distance (D). The proximal portion (212A) of the first linkage member (214A) and the second linkage member (214B) are coupled to the rear frame member (120). The distal portion (212B) of the first linkage member (214A) and the second linkage member (214B) are pivotally coupled to the support structure (216) (as shown in Figure 2A). It is to be noted that the distance (D) between the first linkage member (214A) and the second linkage member (214B) is in conformity with a width dimension of the support structure (216) and the rear frame member (120). In other words, of the interconnecting linkage members (214C) is dimensioned in conformity to the width dimension of the support structure (216) and the rear frame member (120).

[0070] The pivot frame assembly (124) includes a mounting structure (218). As shown, the mounting structure (218) is positioned at a bottom side (see, 232 of Figure 2B) of the pivot frame assembly (124). The mounting structure (218) allows a power unit (see, 504 of Figure 5A) to be mounted thereto. The power unit (504) may include one or more battery modules (see, 506 of Figure 5A) (e.g., lithium-ion battery). The battery modules (506) may be fixedly coupled to the mounting structure (218) or may be removably coupled to the mounting structure (218) as per design feasibility and requirement. The battery modules (506) may be a rechargeable battery. The powerunit (504) including the battery modules (506) may provide the necessary power to drive the rear ground engaging member (122), the front ground engaging member (106), or both the front ground engaging member (106) and the rear ground engaging member (122) simultaneously, without limiting the scope of the invention. Also, the power unit (504) may include a drive motor (e.g., an electric motor) (not shown in Figures) mounted to the second pivot frame member (204).

[0071] Referring to Figure 2A in conjunction with Figure 1 , the vehicle (100) includes a swing arm (128). The swing arm (128) is swingably coupled to the pivot frame assembly (124) and the rear ground engaging member (122). In particular, the body frame (102) may include a pivot centre (220) located in proximity to a bottom portion (see, 234 of Figure 2B) of the second pivot frame member (204). The swing arm (128) is pivotally coupled to the pivot centre (220). In particular, the pivot centre (220) may include a fastening mechanism (220A) for swingably coupling the swing arm (128) to the pivot centre (220). The fastening mechanism (220A) may allow the swing arm (128) to reciprocate in a substantially vertical direction which will be explained further in detail.

[0072] Referring to Figure 2B, the pivot frame assembly (124) is adapted to receive a rear suspension member (236). The rear suspension member (236) includes a first end (238A) and a second end (238B). The first end (238A) is movably coupled to the support structure (216). The second end (238B) is coupled to the swing arm (128) via a connecting rod member (see, 222 of Figure 2A). In particular, the rear suspension member (236) includes a damper member (240) and a damper coil (242).

[0073] The damper member (240) is configured with a coupling means at the second end (238B) for allowing coupling of the rear suspension member (236) to the connecting rod member (222), thereby connecting the rear suspension member (236) to the swing arm (128). Further, the first end (238A) of the damper member (240) is inserted within a groove (244) configured in the support structure (216) (as shown in Figure 2C). The damper member (240) is dimensioned in conformity with the dimensions of the groove (244).

[0074] The damper coil (242) is secured to the damper member (240) (as shown in Figure 2C). The damper coil (242) includes a first portion (246A), a second portion (246B), and a space (246C) defined between the first portion (246A) and the second portion (246B). The space (246C) defined between the first and second portions (246A; 246B) is dimensioned based on a length dimension of the support structure (216). Thus, the space (246C) defined between the first and second portions (246A; 246B) of the damper coil (242) accommodates the support structure (216) therein when the damper coil (242) is secured to the damper member (240) (as shown in Figure 2C). Further, while adjusting the height dimension of the body frame (102), the damper coil (242) is rotatably operated corresponding to the rotation of the height adjustment member (210) for selectively engaging with the engagement members (208) of the first pivot frame member (202). To that effect, the damper member (240) reciprocates within the groove (244) which will be explained further in detail.

[0075] Figures 3A, 3B, and 3C represent articulation of the height adjustment member (210) for selectively engaging with an engagement member configured in the first pivot frame member (202)for adjusting the height dimension of the vehicle (100), in accordance with an embodiment of the present invention.

[0076] Referring to Figure 3A, the flange member (228C) of the height adjustment member (210) is initially engaged with an engagement member (see, 302) of the engagement members (208) configured in the first pivot frame member (202). In this scenario, the body frame (102) or the vehicle (100) may be adjusted in a particular height dimension. As explained above, the flange member (228C) is associated with a self-locking and release functionality. Thus, a rider may operate the height adjustment member (210) to engage or disengage the flange member (228C) for adjusting the length dimension of the first pivot frame member (202). Further, adjusting the length dimension of the first pivot frame member (202) by selectively engaging the flange member (228C) with the engagement members (208) results in adjusting the height dimension of the vehicle (100).

[0077] Referring to Figure 4A in conjunction with Figure 3A, the first pivot frame member (202) may be adjusted to a length dimension (L1 ) when the flange member (228C) is removably engaged to the engagement member (302). In this scenario, a height dimension of the vehicle (100) may be maintained at a height (H1 ) (as shown in Figure 5A). As explained above, the linkage member (126) pivotally coupled to the pivot frame assembly (124) is adjusted corresponding to the length of the first pivot frame member (202) being adjusted by selectively engaging the flange member (228C) with the engagement members (208). In other words, an angle of orientation of the linkage member (126) may be adjusted based on adjusting the length of the first pivot frame member (202). In this scenario, the linkage member (126) may be oriented at an angle (see, 01 of Figure 5A) relative to the second pivot frame member (204). For illustration purposes, the second pivot frame member (204) and the linkage member (126) are represented as lines (P1 ) and (P2) for depicting the angle of orientation (01) of the linkage member (126) relative to the second pivot frame member (204).

[0078] Further, adjusting the length of the first pivot frame member (202) by selectively engaging the flange member (228C) with the engagement members (208) facilitates the swing arm (128) of the vehicle (100) to reciprocate in a substantially vertical direction (see, V-V’ Figures 5A and 5B). As explained above, the first pivot frame member (202) is maintained at the length (L1 ) due to engaging the flange member (228C) with the engagement member (302). In this scenario, the swing arm (128) is oriented in a first position (see, 502 of Figure 5A). In the first position (502), the swing arm (128) is oriented parallel to a ground surface. Further, the swing arm (128) oriented in the first position (502) results in the adjustment of the rear suspension member (236). In particular, the damper member (240) is traversed forward, thus resulting in an increase in the length of the damper member (240) extending from the groove (244) (as shown in Figure 4A). This allows the swing arm (128) to be oriented in the second position (508).

[0079] Referring to Figure 3B, the height adjustment member (210) is rotatably operated in a first direction (D1 ) (e.g., anti-clockwise or clockwise direction) by using the operating knob (228D). The height adjustment member (210) operated in the first direction (D1 ) disengages the flange member (228C) from the engagement member (302) of the first pivot frame member (202). Upondisengaging the flange member (228C), the rider may adjust the length dimension of the first pivot frame member (202) in a longitudinal direction (R’) of the second pivot frame member (204). In other words, the length of the first pivot frame member (202) may be increased or decreased according to the rider’s ergonomics by disengaging the flange member (228C) from the engagement member (302). In order to adjust (increase or decrease) the length of the first pivot frame member (202), an engagement member (such as the engagement member (302)) of the plurality of engagement members (208) in the first pivot frame member (202) is to be positioned axially with respect to the space (228E).

[0080] Further, the damper coil (242) of the rear suspension member (236) is dynamically rotated corresponding to the rotation of the height adjustment member (210) in the first direction (D1 ). The second portion (246B) includes a protruding structure (246D). It is to be noted that the protruding structure (246D) of the damper coil (242) is oriented substantially parallel to the operating knob (228D) of the height adjustment member (210) due to rotatable operation of the height adjustment member (210) in the first direction (D1 ).

[0081] Referring to Figure 3C, the height adjustment member (210) is rotatably operated in a second direction (D2) (e.g., anti-clockwise or clockwise direction) for allowing the flange member (228C) of the height adjustment member (210) to removably engage with an engagement member (304) of the plurality of engagement members (208) in the first pivot frame member (202). It is to be noted that the engagement member (304) is selected corresponding to the adjusted length of the first pivot frame member (202). For example, the length of the first pivot frame member (202) from the opening of the second pivot frame member (204) may be 15 centimeters (cm). In this scenario, the engagement member (302) may be selected among the engagement members (208) in the first pivot frame member (202) for securing the flange member (228C) (as shown in Figures 3A and 3B). Upon disengaging the flange member (228C) the rider may adjust the length of the first pivot frame member (202) to 25 centimeters (cm). In this scenario, the engagement member (304) is selected among the engagement members (208) for securing the flange member (228C). It is to be noted that the engagement members (e.g., engagement members (302; 304)) should be aligned in close proximity to the flange member (228C) (i.e., aligned axially with respect to the space (228E) for securing the flange member (228C).

[0082] Referring to Figure 4B, in conjunction with Figure 3C, the first pivot frame member (202) may be adjusted to a length dimension (L2) when the flange member (228C) is removably engaged to the engagement member (304). In this scenario, a height dimension of the vehicle (100) may be maintained at a height (H2) (as shown in Figure 5B). In this scenario, the linkage member (126) is oriented at an angle (see, 02 of Figure 5B) relative to the second pivot frame member (204). Further, the swing arm (128) is oriented in a second position (see, 508 of Figure 5B). Thus, the linkage member (126) is oriented at an angle (02) from the angle (01) and the swing arm (128) is displaced from the first position (502) to the second position (508) due to engaging the flange member (228C) to the engagement member (304).

[0083] In addition, the swing arm (128) oriented in the second position (508) results in the adjustment of the rear suspension member (236). As shown, the damper member (240) is traversed backward thus reducing the length of the damper member (240) extending from the groove (244), for allowing the swing arm (128) to be oriented in the second position (508). Further, the protruding structure (246D) of the damper coil (242) is oriented substantially parallel to the operating knob (228D) of the height adjustment member (210) due to the rotatable operation of the height adjustment member (210) in the second direction (D2). Also, the left and right front fork members (1 14) provided with front suspensions may be adjusted based on adjusting the length dimension of the first pivot frame member (202) to length (L1 ; L2). Thus, the combined operation of the height adjustment member (210), the swing arm (128), the rear suspension member (236), the linkage member (126) results in adjusting the length of the first pivot frame member (202) which in turn results in adjusting the height dimension of the vehicle (100).

[0084] Figure 6A illustrates a perspective view of a vehicle (600), in accordance with an embodiment of the present invention. The vehicle (600) referred to herein, embodies a two-wheeled motorcycle such as an electric vehicle (EV). Alternatively, the vehicle (600) may embody any other ridden vehicles such as scooters, all-terrain vehicles (ATVs), etc. without limiting the scope of the invention.

[0085] The vehicle (600) includes an adjustable frame structure (602). The adjustable frame structure (602) may be made of materials such as, but not limited to, steel, aluminum alloy, and the like. The adjustable frame structure (602) is designed with optimum mechanical strength and reinforcement for supporting different load capacity and allows mounting of one or more components (e.g., a power unit, electric components, etc.) of the vehicle (600).

[0086] Further, the vehicle (600) includes a steering assembly (604), and a front ground engaging member (606). The adjustable frame structure (602) supports the steering assembly (604) and the front ground engaging member (606) in a front portion (608) of the vehicle (600). The front ground engaging member (606) is operatively coupled to the steering assembly (604) of the adjustable frame structure (602). The steering assembly (604) includes a handlebar (610). The handlebar (610) is configured to be rotated in a left and right directions by a rider to steer the vehicle (600). Moreover, the vehicle (600) includes a pair of footrest (see, 636 of Figure 6B) for the rider riding the vehicle (600).

[0087] The vehicle (600) further includes a pair of left and right front fork members (612) attached to a head tube (614) of the adjustable frame structure (602). It is to be noted that the pair of left and right front fork members (612) is attached to the head tube (614) in a steerable manner by means of a steering shaft (not shown in Figures). The pair of left and right front fork members (612) is provided with front suspensions for shock-absorption of the front ground engaging member (606), thereby preventing the transfer of shocks to the adjustable frame structure (602).

[0088] Further, the adjustable frame structure (602) includes a front frame member (616) extending obliquely in a rearward direction from the head tube (614). In an embodiment, the head tube (614) and the front frame member (616) extending obliquely from the head tube (614) may form a unitarystructure. In another embodiment, the front frame member (616) may be coupled to the head tube (614) using conventional fastening means. Some examples of the conventional fastening means may include bolt-nut system, rivets, rivets, Allen bolts, and the like.

[0089] The adjustable frame structure (602) further includes a rear frame member (618). The rear frame member (618) extends obliquely in a rearward and substantially upward direction from the front frame member (616). The rear frame member (616) may be adapted to receive an auxiliary frame structure (620). The auxiliary frame structure (620) is adapted to support / receive a seat member (not shown in Figures). In the illustrated embodiment, the seat member may include only a rider seat (not shown in Figures). The rider seat provides seating for the rider. However, the auxiliary frame structure (620) and the seat member may be designed to include a pillion rider seat (not shown in Figures) in the vehicle (600), therefore it should not be considered to limit the scope of the present disclosure. Further, the pillion rider seat provides seating for a pillion rider. In the illustrated embodiment, a rear ground engaging member (622) underlies the auxiliary frame structure (620).

[0090] Further, the adjustable frame structure (602) includes a pivot frame member (624). The pivot frame member (624) is adjustably coupled to the front frame member (616). In particular, the front frame member (616) includes a coupling mechanism (632) located at a distal portion (634) of the front frame member (616). The coupling mechanism (632) is configured to removably engage the front frame member (616) to the pivot frame member (624). Further, coupling the pivot frame member (624) with the front frame member (616) results in adjusting a height dimension of the adjustable frame structure (602) or the vehicle (600) which will be explained further in detail.

[0091] Further, the vehicle (600) includes a swing arm (626). The swing arm (626) is swingably coupled to the pivot frame member (624) and the rear ground engaging member (622). In particular, the pivot frame member (624) of the adjustable frame structure (602) may include a pivot centre (628) at a distal portion (630) of the pivot frame member (624). The swing arm (626) is pivotally coupled to the pivot centre (628). In particular, the pivot centre (628) allows insertion of a fastening mechanism (e.g., collar and axle bolt) therein. The fastening mechanism may be housed with an axle casing (see, 816 of Figure 8) located at the distal portion (630). The fastening mechanism swingably couples the swing arm (626) to the pivot centre (628). The fastening mechanism may be configured to reciprocate the swing arm (626) in a substantially vertical direction based on adjustably engaging the front frame member (616) with the pivot frame member (624) which will be explained further in detail.

[0092] The vehicle (600) further includes a rear suspension member (see, 638 of FIG. 6B) coupled between the pivot frame member (624) and the swing arm (626). The rear suspension member (638) may be coupled to the swing arm (626) via a connecting link (not shown in Figures 6A and 6B). The rear suspension member (638) is configured to absorb the bumps of the roads. Further, the rear suspension member (638) associated with a self-adjustable functionality suitably adjustsit’s length and orientation based on adjustably engaging the pivot frame member (624) with the front frame member (616).

[0093] Referring to Figure 7, a perspective view of the front frame member (616) is illustrated. The front frame member (616) includes a first front frame (702) and a second front frame (704). The first front frame (702) and the second front frame (704) extends obliquely in a rearward direction from the head tube (614). The first front frame (702) and the second front frame (704) extending obliquely in the rearward direction from the head tube (614) results in a symmetrical configuration of the front frame member (616) (as shown in Figure 9A). In other words, the front frame member (616) including the first front frame (702) and the second front frame (704) extending obliquely in the rearward direction from the head tube (614) is symmetrical with respect to an axis (see, A-A’ of Figure 9A). The axis (A-A’) corresponds to a symmetrical axis (A-A’) of the front frame member (616). The front frame member (616) may be configured as a unitary structure or a modular structure as per design feasibility and requirement. In the modular structure, the first front frame (702) and the second front frame (704) may be coupled to the head tube (614) using coupling members (not shown in Figures).

[0094] The front frame member (616) including the first front frame (702) and the second front frame (704) may be made of die casting. The front frame member (616) may be made of materials such as, but not limited to, steel, aluminium alloy, and the like. As shown, the front frame member (616) corresponds to a mesh framework or a trellis frame structure. In this configuration, each of the first front frame (702) and the second front frame (704) includes multiple small straight tubes (see, 706). The multiple small straight tubes (706) may be welded together in numerous to form mesh-like frame structure (as shown in Figure 7). This configuration of the front frame member (616) provides high mechanical strength and reinforcement to withstand various forces.

[0095] Further, the front frame member (616) includes the rear frame member (618). The rear frame member (618) includes a first rear frame (708) and a second rear frame (710). The first rear frame (708) and the second rear frame (710) extend obliquely in a rearward and substantially upward direction from the front frame member (616). In particular, the first rear frame (708) and the second rear frame (710) extend obliquely in the rearward and substantially upward direction from the corresponding first front frame (702) and second front frame (704). The first rear frame (708) and the second rear frame (710) extending in the rearward and substantially upward direction from the corresponding first front frame (702) and second front frame (704) are oriented towards the symmetrical axis (A-A’) of the front frame member (616). It is evident that, a top portion (714) of each of the first rear frame (708) and the second rear frame (710) are juxtaposed (or contacts each other) when the first rear frame (708) and the second rear frame (710) are oriented towards the symmetrical axis (A-A’). Further, the first rear frame (708) and the second rear frame (710) extending obliquely from the corresponding first front frame (702) and second front frame (704) are located proximate to a middle portion (712) of the front frame member (616). Furthermore, the first rear frame (708) and the second rear frame (710) extending from the corresponding first front frame(702) and second front frame (704) and oriented towards the symmetrical axis (A-A’) forms a triangular structure proximate to the middle portion (712).

[0096] Further, each of the first rear frame (708) and the second rear frame (710) is configured with a plurality of slots (716) on a top surface (718) of each of the first rear frame (708) and the second rear frame (710). The auxiliary frame structure (620) is positioned on the rear frame member (618) such that a plurality of complementary slots (see, 640 of Figure 6B) of the auxiliary frame structure (620) is positioned axially with respect to the plurality of slots (716). Upon positioning the complementary slots (640) with the slots (716), the auxiliary frame structure (620) is mounted to the rear frame member (618) (or the first rear frame (708) and the second rear frame (710)) using one or more fastening members. Some examples of the fastening members may include, but are not limited to, bolt-nut system, rivets, rivets, Allen bolts, and the like.

[0097] The coupling mechanism (632) is configured to removably engage to each of the first front frame (702) and the second front frame (704) at the distal portion (634) of the front frame member (616). It is to be noted that each of the first front frame (702) and the second front frame (704) is configured with an opening (720) for allowing the coupling mechanism (632) to be inserted therein for adjustably coupling the front frame member (616) to the pivot frame member (624) which will be explained further in detail.

[0098] Referring to Figure 8, a perspective view of the pivot frame member (624) is illustrated. The pivot frame member (624) includes a first pivot frame (802) and a second pivot frame (804). The first pivot frame (802) and the second pivot frame (804) are adjustably coupled to the front frame member (616). Further, the first pivot frame (802) and the second pivot frame (804) adjustably coupled to the front frame member (616) obliquely extend in a rearward direction from the front frame member (616). Furthermore, the pivot frame member (624) includes a cross member (806). The cross member (806) is coupled to the first pivot frame (802) and the second pivot frame (804). More specifically, the pivot frame member (802) including the cross member (806) interconnects (or fixedly connects) the first pivot frame (802) and the second pivot frame (804) at a proximal portion (808) of the pivot frame member (624). As explained above, the axle casing (816) interconnects the first pivot frame (802) and the second pivot frame (804) at the distal portion (630). The cross member (806) and the axle casing (816) interconnecting the first pivot frame (802) and the second pivot frame (804) may provide stability and reinforcement to the pivot frame member (624) to withstand various load capacities.

[0099] Further, each of the first pivot frame (802) and the second pivot frame (804) is configured with a set of guide groove paths (810). The first pivot frame (802) and the second pivot frame (804) are configured with a set of engagement members (812A, 812B, 812C) along the first pivot frame (802) and the second pivot frame (804). In the illustrated embodiment, the set of engagement members (812A, 812B, 812C) are configured as holes. Alternatively, the engagement members (812A, 812B, 812C) may include slots, groove, and the like.

[0100] The set of engagement members (812A, 812B, 812C) is configured on the set of guide groove paths (810). It is to be noted that the set of guide groove paths (810) and the set of engagement members (812A, 812B, 812C) defined on the set of guide groove paths (810) are configured between the proximal portion (808) and a central portion (814) of the pivot frame member (624). As shown, each set of engagement members (812A, 812B, 812C) includes a pair of engagement members. Alternatively, each set of engagement members (812A, 812B, 812C) may include any number of engagement members as per design feasibility and requirement. It is to be noted that a distance between each engagement member of a set of engagement member (812A) is exemplarily denoted as ‘A1 ’. Similarly, a distance between each engagement member of a set of engagement member (812B) is denoted as ‘A2’ and a distance between each engagement member of a set of engagement member (812A) is denoted as ‘A3’. Further, the distances ‘A1 ’, ‘A2’ and ‘A3’ may be equal.

[0101] Furthermore, each set of engagement member (812A, 812B, 812C) is oriented angularly with respect to a horizontal plane (X-X’) of the pivot frame member (624). It is to be noted that a set of engagement member (812A) is positioned at a predetermined distance (R1 ) from a set of engagement member (812B). Further, the set of engagement member (812B) is positioned at a predetermined distance (R2) from a set of engagement member (812C). In an embodiment, the predetermined distance (R1 ) may be equal to the predetermined distance (R2). Alternatively, the predetermined distance (R1 ) may not be equal to the predetermined distance (R2) or may be designed as per the requirements.

[0102] Referring to Figure 9A, the coupling mechanism (632) is configured to removably engage with one set of engagement member of the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804), for coupling the first front frame (702) and the second front frame (704) to the first pivot frame (802) and the second pivot frame (804), respectively. Further, removably engaging the coupling mechanism (632) with the one set of engagement member of the set of engagement members (812A, 812B, 812C) results in adjusting a height dimension of the vehicle (600) which will be explained further in detail.

[0103] In particular, the first pivot frame (802) and the second pivot frame (804) are disposed in a space (902) defined between the first front frame (802) and the second front frame (804) by abutting the first front frame (702) and the second front frame (704), respectively (as show in Figures 9A and 9B). The cross member (806) and the axle casing (816) interconnecting the first pivot frame (802) and the second pivot frame (804) are dimensioned in conformity with the dimensions of the space (902) defined between the first front frame (702) and the second front frame (704) (as show in Figure 9A). This configuration enables the first front frame (702) and the second front frame (704) to slidably engage with the first pivot frame (802) and the second pivot frame (804), respectively (as shown in Figures 9A-9B). The first pivot frame (802) and the second pivot frame (804) abutting the first front frame (702) and the second front frame (704) are adjustably coupled to the first front frame (702) and the second front frame (704), respectively.

[0104] To adjustably couple the front frame member (616) and the pivot frame member (624), the opening (720) at the distal portion (634) of each of the first front frame (702) and the second front frame (704) is oriented axially to the one set of engagement member of the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804), respectively. As shown, the opening (720) at the distal portion (634) of the first front frame (702) and the one set of engagement member (for e.g., the engagement member (812C)) of the first pivot frame (802) are aligned along an axis (B-B’). Further, the opening (720) at the distal portion (634) of the second front frame (704) and the set of engagement member (812C) of the second pivot frame (804) are aligned along an axis (C-C’). Thereafter, the coupling mechanism (632) is removably engaged to the set of engagement member (812C) of the first pivot frame (802) and the second pivot frame (804) by inserting through the opening (720) of the first front frame (702) and the second front frame (804), respectively.

[0105] Referring to Figure 9B in conjunction with Figure 9A, the coupling mechanism (632) includes a set of coupling members (904) and a linkage member (906) interlinking each coupling member of the set of coupling members (904). This enables the set of coupling members (904) to be removably coupled with the set of engagement member (812C) of the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804). It is to be noted that, each coupling member of the set of coupling members (904) interlinked by the linkage member (906) is in conformity to the predefined distance (D1 , D2, D3) between each engagement member of the set of engagement members (812A, 812B, 812C). This configuration of the coupling mechanism (632) allows the set of coupling members (904) to be removably engaged with the set of engagement member (812C) of the first pivot frame (802) and the second pivot frame (804). Similarly, the set of coupling members (904) can be removably engaged to the other set of engagement members (812A, 812C). Thus, it is evident that, selectively engaging the set of coupling members (904) of the coupling mechanism (632) with the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804) results in adjusting a height dimension of the vehicle (600) or the adjustable frame structure (602).

[0106] Referring to Figure 10A, the vehicle (600) adjusted to a height dimension (H) is illustrated. In this scenario, the set of coupling members (904) of the coupling mechanism (632) is removably coupled to the set of engagement member (812C) of the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804). To that effect, the vehicle (600) is maintained at the height dimension (H’). As explained above, the swing arm (626) of the vehicle (600) reciprocates in a substantially vertical direction (see, V1 -V2 Figures 10A and 10B) by selectively engaging the coupling mechanism (632) to the set of engagement members (812A, 812B, 812C). The vertical direction (V1 -V2) corresponds to a pivot axis of the swing arm (626). Further, by engaging the coupling members (904) to the set of engagement member (812C), the swing arm (626) is oriented in a first position (see, 1002 of Figure 10A). In the first position (1002), the swing arm (626) is oriented parallel to a ground surface (not shown in Figures). Furthermore,the swing arm (626) oriented in the first position (1002) results in adjustment of the rear suspension member (638).

[0107] Referring to Figure 10B, the vehicle (600) adjusted to a height dimension (H’) is illustrated. In this scenario, the set of coupling members (904) of the coupling mechanism (632) is removably coupled to one set of engagement member (e.g., the set of engagement member (812 A)) of the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804). To that effect, the vehicle (600) is maintained at the height dimension (H’). Further, by engaging the set of coupling members (904) to the set of engagement member (812A), the swing arm (626) is oriented in a second position (see, 1004 of Figure 10B). Furthermore, the rear suspension member (638) is suitably adjusted corresponding to the orientation of the swing arm (626) in the first position (1002) or the second position (1004). The height dimensions (H, H’) of the vehicle correspond to a minimum height adjustment and a maximum height adjustment of the vehicle (600), respectively.

[0108] Various embodiments of the present invention offer multiple advantages and technical effects. Without limiting the scope of the invention, the adjustment of the adjustable frame structure results in height adjustment of the vehicle suitable for different rider ergonomics (e.g., rider’s height, seating position, etc.). The front frame member and the pivot frame member include simple structural configuration that allows the rider to suitably adjust the height of vehicle in a hassle-free manner. The pivot frame member and the front frame member are configured with significant mechanical strength that is capable of withstanding different load capacity.

[0109] Various embodiments of the present invention offer multiple advantages and technical effects. Without limiting the scope of the invention, the pivot frame assembly configured with the height adjustment functionality facilitates the body frame to be adjusted. The adjustment of the body frame results in height adjustment of the vehicle suitable for different rider ergonomics (e.g., rider’s height, seating position, etc.). The pivot frame assembly includes simple structural configuration that allows the rider to suitably adjust the height of vehicle in a hassle-free manner. The pivot frame assembly is configured with significant mechanical strength that is capable of withstanding different load capacity.

[0110] While few embodiments of the present invention have been described above, it is to be understood that the invention is not limited to the above embodiments and modifications may be appropriately made thereto within the spirit and scope of the invention.

[0111] While considerable emphasis has been placed herein on the particular features of this invention, it will be appreciated that various modifications can be made and that many changes can be made in the preferred embodiments without departing from the principles of the invention. These and other modifications in the nature of the invention or the preferred embodiments will be apparent to those skilled in the art from the invention herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the invention and not as a limitation.

Claims

Claims

1. A vehicle (100), comprising: a front ground engaging member (106) and a rear ground engaging member (122); a body frame (102), comprising: a head tube (116), a main frame (118) extending rearwardly from the head tube (116), a rear frame member (120) mounted to the main frame (118) and extending rearwardly, and a pivot frame assembly (124) comprising a first pivot frame member (202) and a second pivot frame member (204); and a swing arm (128) swingably coupled the rear ground engaging member (122) to the second pivot frame member (204),

2. The vehicle (100) as claimed in claim 1 , wherein the first pivot frame member (202) adjustably engages with the second pivot frame member (204) along a length (L) of the first pivot frame member (202), and wherein the distal end (224) is positioned within the second pivot frame member (204) and the first pivot frame member (202) is slidably engaged with the second pivot frame member (204).

3. The vehicle (100) as claimed in claim 1 , comprising: a linkage member (126) comprising a proximal portion (212A) adapted to pivotally couple to the rear frame member (120) and a distal portion (212B) adapted to pivotally couple to the second pivot frame member (204) of the pivot frame assembly (124).

4. The vehicle (100) as claimed in claim 3, wherein the linkage member (126) comprises a first linkage member (214A), a second linkage member (214B), and at least one interconnecting linkage member (214C) coupled between the first linkage member (214A) and the second linkage member (214B).

5. The vehicle (100) as claimed in claim 1 , wherein the first pivot frame member (202) of the pivot frame assembly (124) is configured with a plurality of engagement members (208) at regular intervals throughout a length (L) of the first pivot frame member (202).

6. The vehicle (100) as claimed in claim 1 , wherein the pivot frame assembly (124) further comprises a height adjustment member (210) mounted to a top portion (226) of the second pivot frame member (204), and wherein the height adjustment member (210) comprises: a top part (228 A), a bottom part (228B) coupled to the top part (228A), wherein the bottom part (228B) is configured with an operating knob (228D) for rotatably operating the height adjustment member (210), and a flange member (228C) disposed in a space (228E) defined between the top part (228A) and the bottom part (228B).

7. The vehicle (100) as claimed in claim 6, wherein the height adjustment member (210) is configured to be rotatably operated at the top portion (226) of the second pivot frame member (204) to selectively engage the flange member (228C) with an engagement member (302; 304) of the plurality of engagement members (208) of the first pivot frame member (202) for adjusting a length dimension (L1 ; L2) of the first pivot frame member (202).

8. The vehicle (100) as claimed in claim 7, wherein adjusting the length dimension (L1 ; L2) of the first pivot frame member (202) by selectively engaging the flange member (228C) with the plurality of engagement members (208) results in adjusting a height dimension (H1 ; H2) of the vehicle (100).

9. The vehicle (100) as claimed in claim 7, wherein, the height adjustment member (210) is rotatably operated in a first direction (D1 ) for allowing the flange member (228C) to disengage from an engagement member (302) of the plurality of engagement members (208), thereby allowing the first pivot frame member (202) to slide along its length (L) in a longitudinal direction (R’) of the second pivot frame member (204), andthe height adjustment member (210) is rotatably operated in a second direction (D2) for allowing the flange member (228C) to removably engage with an engagement member (304) of the plurality of engagement members (208).

10. The vehicle (100) as claimed in claim 9, wherein a linkage member (126) pivotally coupled to the pivot frame assembly (124) is pivoted corresponding to the length dimension (L1 ; L2) of the first pivot frame member (202) being adjusted by selectively engaging the flange member (228C) with the plurality of engagement members (208).

11. The vehicle (100) as claimed in claim 1 , further comprising a rear suspension member (236) including a first end (238A) coupled to a support structure (216) of the second pivot frame member (204) located proximate to a top portion (226) of the second pivot frame member (204) and a second end (238B) coupled to the swing arm (128) via a connecting rod member (222).

12. The vehicle (100) as claimed in claim 11 , wherein the rear suspension member (236) is configured to be rotatably operated corresponding to the rotation of a height adjustment member (210) mounted to the pivot frame assembly (124) for selectively engaging with the plurality of engagement members (208).

13. The vehicle (100) as claimed in claim 1 , wherein the second pivot frame member (204) comprises a mounting structure (218) mounted to a bottom side (232) of the pivot frame assembly (124) for receiving a power unit (504) comprising one or more battery modules (506).

14. A vehicle (600), comprising: a front ground engaging member (606) and a rear ground engaging member (622); an adjustable frame structure (602), comprising: a head tube (614), a front frame member (616) extending rearwardly from the head tube (614),a rear frame member (618) extending rearwardly from the front frame member (616), and a pivot frame member (624) adjustably coupled to the front frame member (616), the pivot frame member (624) is configured with a set of engagement members (812A, 812B, 812C); and a swing arm (626) swingably coupled the rear ground engaging member (622) to the pivot frame member (624), wherein the front frame member (616) is configured with a coupling mechanism (632), and wherein the coupling mechanism (632) is configured to removably engage with one set of engagement member of the set of engagement members (812A, 812B, 812C) for coupling the front frame member (616) to the pivot frame member (624).

15. The vehicle (600) as claimed in claim 14, wherein the pivot frame member (624) comprises a first pivot frame (802) and a second pivot frame (804), and wherein the first pivot frame (802) and the second pivot frame (804) adjustably coupled to the front frame member (616) obliquely extend in a rearward direction from the front frame member (616).

16. The vehicle (600) as claimed in claim 14, wherein the front frame member (616) comprises a first front frame (702) and a second front frame (704), and wherein the first front frame (702) and the second front frame (704) extend obliquely in a rearward direction from the head tube (614).

17. The vehicle (600) as claimed in claim 14, wherein the coupling mechanism (632) is located at a distal portion (634) of each of a first front frame (702) and a second front frame (704) of the front frame member (616).

18. The vehicle (600) as claimed in claim 14, wherein a first pivot frame (802) and a second pivot frame (804) of the pivot frame member (624) are disposed in a space (902) defined between a first front frame (702) and a second front frame (704), and wherein the coupling mechanism (632) is configured to removably engage with the one set of engagement member of the set of engagement members (812A, 812B, 812C) for coupling the firstpivot frame (802) and the second pivot frame (804) to the first front frame (702) and the second front frame (704), respectively.

19. The vehicle (600) as claimed in claim 18, wherein the pivot frame member (624) further comprises a cross member (806) interconnecting the first pivot frame (802) and the second pivot frame (804) at a proximal portion (808) of the pivot frame member (624).

20. The vehicle (600) as claimed in claim 18, wherein each of the first pivot frame (802) and the second pivot frame (804) is configured with a set of guide groove paths (810) to define the set of engagement members (812A, 812B, 812C) between a proximal portion (808) and a central portion (814) of the pivot frame member (624).

21. The vehicle (600) as claimed in claim 14, wherein the rear frame member (618) comprises a first rear frame (708) and a second rear frame (710), and wherein the first rear frame (708) and the second rear frame (710) extends obliquely in a substantially upward direction from a first front frame (702) and a second front frame (704) of the front frame member (616), respectively, wherein the first rear frame (708) and the second rear frame (710) extending from the corresponding first front frame (702) and second front frame (704) are oriented towards a symmetrical axis (A-A’) of the front frame member (616), thus enabling a top portion (714) of each of the first rear frame (708) and the second rear frame (710) to be juxtaposed.

22. The vehicle (600) as claimed in claim 21 , wherein each of the first rear frame (708) and the second rear frame (710) is configured with a plurality of slots (716) on a top surface (718) of each of the first rear frame (708) and the second rear frame (710) for allowing mounting of an auxiliary frame structure (620) to the first rear frame (708) and the second rear frame (710).

23. The vehicle (600) as claimed in claim 14, wherein the coupling mechanism (632) comprises a set of coupling members (904) and a linkage member (906) interlinking the set of coupling members (904), thereby enabling the set of coupling members (904) to be removably coupled with theone set of engagement member of the set of engagement members (812A, 812B, 812C) configured in a first pivot frame (802) and a second pivot frame (804).

24. The vehicle (100) as claimed in claim 23, wherein selectively engaging the set of coupling members (904) with the one set of engagement member of the set of engagement members (812A, 812B, 812C) of the first pivot frame (802) and the second pivot frame (804) results in adjusting a height dimension (H, H’) of the vehicle (600).

25. The vehicle (600) as claimed in claim 23, wherein a set of engagement member (812A) is positioned at a predetermined distance (R1 ) from a set of engagement member (812B), and wherein the set of engagement member (812B) is positioned at a predetermined distance (R2) from a set of engagement member (812C).

26. The vehicle (600) as claimed in claim 14, further comprising a rear suspension member (638) coupled between the pivot frame member (624) and the swing arm (626).

27. The vehicle (600) as claimed in claim 14, wherein the head tube (714), the first front frame (702), and the second front frame (704) are a unitary structure, and wherein the front frame member (616) is made of die casting, i

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