WO2021048874A1 - Trunk unit in saddle-ride type vehicle - Google Patents

Trunk unit in saddle-ride type vehicle Download PDF

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Publication number
WO2021048874A1
WO2021048874A1 PCT/IN2020/050784 IN2020050784W WO2021048874A1 WO 2021048874 A1 WO2021048874 A1 WO 2021048874A1 IN 2020050784 W IN2020050784 W IN 2020050784W WO 2021048874 A1 WO2021048874 A1 WO 2021048874A1
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WO
WIPO (PCT)
Prior art keywords
unit
trunk unit
saddle
opening
type vehicle
Prior art date
Application number
PCT/IN2020/050784
Other languages
French (fr)
Inventor
Ravisankar Rajamani
Anumalasetty Guravaiah
Vijaya Bhaskar Adiga
Kothuru Narayana Harsha
Venkatasamy GANESH
Keshavaprasad Keshava Datt
Malarkodi Kandasamy
Original Assignee
Tvs Motor Company Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tvs Motor Company Limited filed Critical Tvs Motor Company Limited
Publication of WO2021048874A1 publication Critical patent/WO2021048874A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M7/00Motorcycles characterised by position of motor or engine
    • B62M7/02Motorcycles characterised by position of motor or engine with engine between front and rear wheels
    • B62M7/04Motorcycles characterised by position of motor or engine with engine between front and rear wheels below the frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J1/00Saddles or other seats for cycles; Arrangement thereof; Component parts
    • B62J1/12Box-shaped seats; Bench-type seats, e.g. dual or twin seats
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J37/00Arrangements of fuel supply lines, taps, or the like, on motor cycles or engine-assisted cycles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62JCYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J9/00Containers specially adapted for cycles, e.g. panniers or saddle bags
    • B62J9/10Containers specially adapted for cycles, e.g. panniers or saddle bags integrated with the cycle
    • B62J9/14Containers specially adapted for cycles, e.g. panniers or saddle bags integrated with the cycle under the saddle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62KCYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K2202/00Motorised scooters

Definitions

  • the present subject matter relates to a saddle-ride type vehicle. More particularly, the present subject matter relates to a trunk unit for a saddle-ride type vehicle.
  • One of the parameters which majorly govern the performance of an IC engine is the ratio of air- fuel mixture entering the cylinder of the engine.
  • a device which has been widely implemented in automobiles to achieve this is a carburetor.
  • the carburetor ensures that a pre-determined ratio of the air- fuel mixture enters the cylinder to enable sufficient combustion for propelling the vehicle.
  • Typical construction of a carburetor comprises of an open pipe along with a throttle valve and a fuel storage chamber; the throttle valve controls the air flow velocity which further dictates the amount of fuel entering from the fuel storage chamber to the combustion chamber. The input from the rider is directed to this throttle valve through a throttle cable controlled by him/her during riding conditions.
  • engine also provides power to auxiliary units such as stop lamps or direction indicator lamps.
  • the access to this adjustable member is typically provided below the fuel tank, or behind a frame cover, thus making it easier for access by the rider or mechanic, either directly or by simply removing small components.
  • the engine is mounted below the seat rail frame units, which is typically surrounded by panels along the periphery and an under- seat trunk unit from the top.
  • the trunk unit provides the rider with a space to store articles such as, laptops, documents, etc. Further, the engine and other internal components are covered by the surrounding panels.
  • the design of the trunk unit is majorly constrained by the layout of the engine unit and other surrounding components.
  • the trunk units are made up of light-weight synthetic resin which is injection-molded.
  • synthetic resin As the mechanical properties of synthetic resin are known to deteriorate with increasing temperature, it is important for the trunk unit to have sufficient clearance from the engine unit and other surrounding components, which generate heat during running conditions.
  • injection-molded components are subjected to warping-type defects after molding, it is crucial to maintain a uniform material distribution and prevent discontinuities in the design of the component.
  • the trunk unit provides a reasonably good storage volume to store articles. In addition, the trunk unit also supports the load of the articles. Thus, there is a need to design trunk unit which is structurally efficient.
  • a larger portion of the trunk unit comprises of a cut-out formed therein and a lid, formed separately of the main trunk unit, is provided to cover this cut-out.
  • the lid has a humped profile so as to provide the required clearance from the engine unit and other underlying components. This lid has to be removed using a conventionally available tool to get an access to the underlying carburetor for serviceability and also for modifying the orientation of adjustable member by using a conventionally available tool.
  • the humped profile of the lid leads to a complicated design for mating and assembly of the components as well as tooling of the component.
  • the above construction has discontinuity in material distribution around the cut-out formed on trunk unit; this leads to warping-type defects in the component during injection molding.
  • assembling of the lid onto the trunk unit becomes difficult due to warping-type defects around the periphery of the cut-out.
  • the deformation of the component tends to get worse and the lid has to be forcibly assembled, eventually leading to a strained assembly of the trunk unit and the lid.
  • This further lowers the strength of the trunk unit and also leads to a poor fit quality.
  • this design does not prevent unwanted accidental damage of surrounding components such as expensive power train units; electrical wiring harness etc. by the rider or mechanic and it also exposes the rider or mechanic to hot components.
  • Another major advantage of the fuel injection unit is that since the fuel flow is not directed by external force (e.g. gravitational force); the orientation of the engine does not impact the functioning.
  • This provides a scope to design the engine unit in a compact manner by reducing the number of mechanical components. A reduction in number of mechanical components renders the unit with lower wear and tear damages and significantly brings down the number of services which is required for ascertaining durability. There is also a scope to improve the design of the trunk unit.
  • a relief in the form of a humped shape has been integrally formed on the storage box above the intake system and the resulting hump enters inside the helmet opening, thus enhancing usage of space by the helmet.
  • this downwardly concave portion is formed integral to the storage box, in the shape of a hump, the warping-type defects in the components is eliminated; as a result of this, the stiffness of the storage box is better and a considerable space occupied by this hump is utilized by the hollow space inside the helmet.
  • an adjustable member is still provided.
  • the power requirements on an upwardly sloped road are different than that of a leveled road.
  • the rider will need to remove the whole storage box, which is fastened onto the frame, to access the underlying adjustable member. This leads to a time-consuming process and the rider has to handle the heavy storage box and seat unit after removing it from the vehicle.
  • the helmet is being used by the rider; there is still less space for storing the articles when the helmet is not placed.
  • This construction also fails to provide a reasonably flat surface for the rider to store flat articles such as files, documents, and laptop and so on. It is thus desirable to avoid large undulations on trunk unit walls and to improve its stiffness in addition to providing a reasonably flat space for the rider to store articles conveniently and also provide a convenient access for the rider to modify the orientation of the adjustable member, using a conventionally available tool, when required, by preventing the tool from slipping off onto internal components.
  • the current invention addresses the above concerns and other associated concerns in the prior arts, specifically in saddle-ride type vehicles comprising of fuel-injection type of intake system in engines.
  • an opening is formed integral to a bottom planar face of the bottom wall of trunk unit such that when viewed from a top or a top perspective direction, the rider can locate an adjustable member on the engine unit through this opening and further modify its orientation as needed, using a conventionally available tool.
  • the current invention further comprises a cover which covers this opening whenever there is no requirement to modify the orientation of the adjustable member. The size of this opening is sufficient for modification of the orientation of the adjustable member without exposing other internal components.
  • the current invention specifically pertains to a saddle-ride type vehicle comprising of a swing-ably supported engine unit on the frame; the engine unit of which further comprises of an intake system with a fuel injector unit and an adjustable members, such as adjustable bolts, screws, etc., provided in the vicinity of the intake system to enable modification of the engine output.
  • the cover member is formed separately from the trunk unit and is made up of an elastic material. This enables easy removal of the cover member without using any tools.
  • the cover member formed separately, has interlocking details to remain latched onto the bottom planar face comprising of complimentary mating details. This prevents the cover member from coming off due to vibration and rattling in riding conditions. It also allows removal of the cover member by applying a minimum predetermined force.
  • the opening has a circular shape in planar view with diameter ranging between f20 mm to f40 mm. This particular dimension of the opening prevents the conventionally available tool from falling off while making modifications to the adjustable member.
  • the bottom wall of the trunk unit has at least two bottom planar faces joined together by one or more intermediate walls such that when viewed from the side of the vehicle, the planar faces are at different elevation from each other and the opening is provided on one of the bottom planar surfaces.
  • Figure 1 represents a side view of a saddle-ride type vehicle as per the current invention.
  • Figure 2 represents a fragmented top view of the components as per the current invention.
  • Figure 3 represents a fragmented sectional side view of the components as per the current invention.
  • Figure 4 represents a perspective view of the components as per the current invention.
  • Figure 5 represents a fragmented sectional side view of the components as per one embodiment of the current invention.
  • Figure 6 represents a fragmented sectional side view of the components as per one embodiment of the current invention.
  • FIG. 1 represents a side view of the vehicle when viewed from left side.
  • the saddle-ride type vehicle (100) functionally comprises of an engine unit (101) which generates the power required to propel the vehicle forward, and a frame (102) which further consists of a front frame (103), a central frame (104) and a rear frame (105) joined together to form a frame (102), and a power transmission unit (106) which transfers the power generated by the engine unit (101) to the rear wheel (107) which is located behind the engine unit(101), and a front wheel (108) at front portion of the vehicle below the front frame (103) which is steerable by the rider, and a handle bar unit (109) comprising of a left handle bar grip (110) and a right handle bar grip (111) (not shown) which the rider can use to steer the front wheel (108) in the desired direction, and a front suspension unit (112) for smooth force transmission to the front wheel (108), and a rear suspension unit (113) for smooth force transmission to the rear wheel (107).
  • an engine unit (101) which
  • the front frame (103) consists of a head tube (114) and a down tube (115); the head tube (114) supports the front suspension unit (112) which further support the handle bar unit (109) in a steerable manner and the down tube (115) extends rearward and downward of the head tube (114).
  • the central frame (104) has two tubes (not shown) on the left and right of the vehicle extending away from each other in a rearward direction. The left and right tubes are connected by a cross frame (not shown) extending in vehicle width direction. These left and right tubes further extend rearward and upward to form the rear frame (105) which supports other units of the vehicle at rear portion.
  • a front cowl unit (116) is provided ahead of the head tube (114) for covering the head tube (114) when viewed from front of the vehicle.
  • a front fender (118) is provided above the front wheel (108), in the vicinity of the front suspension unit (112), to prevent mud splashing onto the internal components of the vehicle at front portion.
  • a handle bar rear cowl unit (119) at least partly covers the handle bar unit (109), from the rear side.
  • a handle bar front cowl unit (120) at least partly covers the handle bar unit (109) from front side.
  • a headlamp unit (121) is disposed on the handle bar front cowl unit (120) and mirror units (122,123) are disposed on the handle bar unit (109) through the handle bar front cowl unit (120).
  • An interfacing portion of the handle bar front cowl unit(120) and handle bar rear cowl unit (119) has a cut-out zone (not shown) on left side and right side for projecting the left handle bar grip (110) and right handle bar grip (111) (not shown) respectively.
  • a leg resting panel (124) is provided above the central frame (104) to cover the top portion of central frame (104) and a bottom cowl (125) is provided below the central frame (104) to cover the bottom portion of the central frame (104).
  • a trunk unit (126) is disposed, at the space between the left and right tubes at the rear portion of the vehicle above the engine unit (101), to store articles such as laptop, documents, and files and so on.
  • the trunk unit (126) is mounted onto the cross tube at the front zone and rear zone, thus getting supported by the rear frame (105).
  • a seat unit (127) is provided, above the trunk unit (126) and extending throughout the rear frame (105), for the rider to sit over and maneuver the vehicle.
  • the seat unit (127) is mounted onto the vehicle through a hinge unit (128), provided on the trunk unit (126), such that the seat can be opened by rotating it about the hinge unit (128) to provide access to the store room(129) on the trunk unit (126).
  • a side cowl unit (130) is provided on the left and right sides of the rear frame (105) so as to cover the internal components when viewed from left side of the vehicle and right side of the vehicle respectively.
  • a front cover (131) is disposed ahead of the trunk unit (126) and below the seat unit (127) to cover the internal components, such as engine (101), frame (102) in a vehicle perspective view.
  • a rear cover (132) is provide rearward to the rear frame (105) and an opening formed by assembling the rear cover (132) and the side cowl unit (130) is used to place a tail lamp unit (133) on the rear side.
  • a rear fender (134) is disposed above the rear wheel (107) to prevent mud splashing onto internal components while riding.
  • a grab rail (135) is disposed in the vicinity of the seat unit (127), on the rear portion of the vehicle, to enable a pillion rider to grab for support.
  • Figure 2 to Figure 6 also present the aspects of current invention and its embodiments.
  • Figure 2 is a fragmented top view of the vehicle without the seat assembly.
  • Figure 3 presents the sectional left side view of the vehicle, with the section drawn along the line A in Figure 2.
  • Figure 4 is a perspective view of the trunk unit (126).
  • the engine unit (101) has an intake system (201) with a fuel injector unit (202) and an adjustable member (203), such as an adjustable bolt, screw, etc. is provided to modify the output of the engine unit (101) for desired performance.
  • the trunk unit (126) as per the current invention, comprises of erected walls (204, 205,206,207) which are formed integral to the bottom wall (208) to provide a store room (129) for placing articles such that the erected walls surround the periphery of the store room (129).
  • the bottom wall (208) of the trunk unit (126) comprises of plurality of bottom planar faces (209,210) which are joined together by intermediate walls (211).
  • bottom planar faces (209,210) are at different elevation levels from each other with respect to the ground when viewed from either the left or the right side of the vehicle.
  • An opening (212) is formed integrally on one of the bottom planar faces (209,210) immediately above the adjustable member (203) so as to be directly visible when viewed from a top or a top perspective view after opening the seat unit (127).
  • the opening (212) has a length and width along the longitudinal direction and vehicle lateral direction respectively, which are larger than the length and width of the adjustable member (203) along vehicle longitudinal direction and vehicle lateral direction respectively. At least a portion of the opening (212) overlaps with the adjustable member (203) to provide accessibility of the adjustable member (203).
  • a conventionally available tool (214) can be used to modify the orientation of this adjustable member (203) through this opening (212).
  • This opening (212) is provided with a cover member (213), which covers the opening (212) while there is no requirement to access the adjustable member.
  • the size of this opening (212) formed is sufficient to adjust the orientation of the adjustable member by the rider using a conventionally available tool, but at the same time restricts the tool from falling through the opening (212), thereby preventing accidental damage to underlying components while accessing the adjustment member.
  • FIG. 5 and Figure 6 respectively which are the side fragmented views of a section taken along the line A in Figure 2.
  • the cover member (213) is formed separately and is made up of an elastic material.
  • the cover member (213) can be placed on the bottom planar faces (209,210) and the interfacing details of the cover member (213) matched with that of the opening
  • the cover member (213) is formed integrally and has interlocking detail (601) to enable easy placement of the cover member
  • the third and fourth embodiment defines the specific shape and geometric details of the opening as per the current invention.
  • the opening (212) has a circular shape in a planar view and as per the fourth embodiment, the diameter of the circular shape ranges between f20 mm to f40 mm. This range of diameter will prevent the access to other undesired locations under the seat unit. However, it will allow the tool to enter for accessing the adjustable member. This diameter range also prevents the conventionally available tools from falling and getting stuck inside in a non-retrievable manner.
  • the fifth embodiment of the present invention defines a specific construction of the bottom wall (208) of the trunk unit (126) comprising at least two bottom planar faces (209,210) joined together by one or more intermediate walls (211) such that when viewed from the side of the vehicle, the bottom planar faces are at different elevation level from each other with respect to ground level and the opening (212) can be provided on one of the bottom planar faces (209,210).
  • This embodiment facilitates the provision to accommodate any other configuration of the underlying components which might require localized clearance from the trunk unit (126).
  • the bottom wall can have two separate bottom planar faces, at least one of which has the required clearance with the battery unit. These bottom planar faces can be joined together by an intermediate wall.
  • the reduction in volume of the trunk unit (126) can be minimized as per this embodiment.
  • shape of the bottom wall is simple so as to prevent any major undulations.
  • the tendency of warping during injection molding is drastically reduced due to the size, location and shape of the opening. This further leads to an improved stiffness of the trunk unit and the fit quality is retained throughout the usage of the vehicle.
  • the trunk unit as per the current invention also provided a reasonably flatter surface for convenient storing of articles such as files, documents, and laptop and so on.
  • the bottom planar faces and intermediate walls are configured such that the operating clearance from the engine unit and other underlying components is achieved. There is also flexibility in designing the cover member based on futuristic requirements.
  • the embodiments highlight certain design criteria for the cover member to prevent it from coming off the opening during riding conditions and on the other hand, the design details enable detachment of the cover member with a minimum required force using a conventionally available tool.
  • the size of the opening is sufficient for a conventionally available tool to enter through the cavity and modify the orientation of the adjustable member, but not sufficient for the tool to fall down through this opening; this prevents accidental damage of the internal components by exposing only the required portion of the intake system for modification.
  • Lamp unit - 133 Rear fender - 134 Grab rail - 135 Intake system - 201
  • Fuel injector unit - 202 Adjustable member - 203 Erected walls - 204,205,206,207 Bottom wall - 208 Bottom planar faces - 209,210 Intermediate wall - 211 Opening - 212 Cover member - 213 Tool - 214 Interlock detail - 601

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

This invention related to trunk unit in saddle-ride type vehicles. The trunk unit (126) comprises of erected walls (204,205,206,207) formed integral to the bottom wall (208) to form a store room (129) for placing articles. The bottom wall (208) comprises of bottom planar faces (209,210) which are joined together by an intermediate wall (211).. An opening (212) is formed on one of the bottom planar face (209,210) immediately above an adjustable member (203) provided in the vicinity of an engine so as to enable visibility of the adjustable member (203) when viewed from a top or a top perspective view after opening the seat unit (127). A conventionally available tool (214) can be used to modify the orientation of the adjustable member (203) through the opening (212). The opening (212) is provided with a cover member (213), which covers the opening.

Description

TRUNK UNIT IN SADDLE-RIDE TYPE VEHICLE
[FIELD OF INVENTION]
[0001] The present subject matter relates to a saddle-ride type vehicle. More particularly, the present subject matter relates to a trunk unit for a saddle-ride type vehicle.
[BACKGROUND OF THE INVENTION]
[0002] One of the parameters which majorly govern the performance of an IC engine is the ratio of air- fuel mixture entering the cylinder of the engine. A device which has been widely implemented in automobiles to achieve this is a carburetor. The carburetor ensures that a pre-determined ratio of the air- fuel mixture enters the cylinder to enable sufficient combustion for propelling the vehicle. Typical construction of a carburetor comprises of an open pipe along with a throttle valve and a fuel storage chamber; the throttle valve controls the air flow velocity which further dictates the amount of fuel entering from the fuel storage chamber to the combustion chamber. The input from the rider is directed to this throttle valve through a throttle cable controlled by him/her during riding conditions. It is to be noted that engine also provides power to auxiliary units such as stop lamps or direction indicator lamps.
[0003] In case the rider has to stop or slow down due to heavy traffic jam, especially during night or while taking a turn, it is undesirable to have the engine switched off while doing so. Under such conditions, the engine runs in an idling condition; wherein the power generated by the engine is sufficient to support auxiliary units but not sufficient to propel the vehicle forward. A well-known method to prevent this is to allow a minimum amount of fuel to be injected into the combustion chamber of the engine to retain the combustion. This is achieved by modifying the orientation of an adjustable member such as an adjustable bolt, screw, etc., provided in the vicinity of the carburetor, which ensures that minimum amount of fuel is injected into the combustion chamber when the vehicle stops or slows down. [0004] Moreover, there is a major constraint in the orientation of carburetor unit as the fuel flow in such units is driven by the gravitational force (downwards flow of the fuel). Hence, modification in the orientation of this adjustable member becomes more so important in case of frequently riding in an upwardly- sloped terrain whenever the rider needs to stop the vehicle on purpose, but still wants to keep the engine on. Thus, there is a need to provide an adjustable member which is easily accessible and the orientation of which can be modified with respect to varying usage by the rider when he/she needs to do so.
[0005] Another concern associated with a carburetor unit is the high number of services required for cleaning of the mechanical components to ensure durability. This necessitates an access to a larger portion of the engine unit for servicing of the components.
[0006] In case of motorcycles where the engine is exposed below the frame rails, the access to this adjustable member is typically provided below the fuel tank, or behind a frame cover, thus making it easier for access by the rider or mechanic, either directly or by simply removing small components. However, in saddle-ride type vehicle, the engine is mounted below the seat rail frame units, which is typically surrounded by panels along the periphery and an under- seat trunk unit from the top. The trunk unit provides the rider with a space to store articles such as, laptops, documents, etc. Further, the engine and other internal components are covered by the surrounding panels. As evident, the design of the trunk unit is majorly constrained by the layout of the engine unit and other surrounding components.
[0007] Typically, the trunk units are made up of light-weight synthetic resin which is injection-molded. As the mechanical properties of synthetic resin are known to deteriorate with increasing temperature, it is important for the trunk unit to have sufficient clearance from the engine unit and other surrounding components, which generate heat during running conditions. Moreover, since injection-molded components are subjected to warping-type defects after molding, it is crucial to maintain a uniform material distribution and prevent discontinuities in the design of the component. [0008] It is also desirable that the trunk unit provides a reasonably good storage volume to store articles. In addition, the trunk unit also supports the load of the articles. Thus, there is a need to design trunk unit which is structurally efficient. [0009] In conventional construction, there is an access portion provided which extends from the vertical wall of the storage box to the bottom wall of the under seat storage box in a coverable manner. Although the maintenance of underlying components is ensured through such a construction, it leads to a complicated design of the storage box. Such complex construction leads to warping-type defects in the component after molding due to discontinuity in material distribution around the access portion. This further leads to a reduction in strength of the local portion. Additionally, as a major portion of the underlying components are exposed, there is a possibility of accidental damage of surrounding components during service. For example, any damage to the critical components such as a power train unit or the electrical wiring harness would lead to a high replacement cost. This could also lead to injury to the rider due to exposure to hot components.
[00010] Considering another existing construction in scooters with carburetor units, a larger portion of the trunk unit comprises of a cut-out formed therein and a lid, formed separately of the main trunk unit, is provided to cover this cut-out. The lid has a humped profile so as to provide the required clearance from the engine unit and other underlying components. This lid has to be removed using a conventionally available tool to get an access to the underlying carburetor for serviceability and also for modifying the orientation of adjustable member by using a conventionally available tool. The humped profile of the lid leads to a complicated design for mating and assembly of the components as well as tooling of the component. Moreover, the above construction has discontinuity in material distribution around the cut-out formed on trunk unit; this leads to warping-type defects in the component during injection molding. Thus, assembling of the lid onto the trunk unit becomes difficult due to warping-type defects around the periphery of the cut-out. With frequent removal and assembly of the lid, the deformation of the component tends to get worse and the lid has to be forcibly assembled, eventually leading to a strained assembly of the trunk unit and the lid. This further lowers the strength of the trunk unit and also leads to a poor fit quality. Moreover, even though serviceability and access is ensured, this design does not prevent unwanted accidental damage of surrounding components such as expensive power train units; electrical wiring harness etc. by the rider or mechanic and it also exposes the rider or mechanic to hot components. Also, while the rider uses a conventionally available tool for modification of orientation of the adjustable member, a case may occur where the tool falls through the cut-out and gets stuck among the components in a non-retrievable manner; this may cause accidental damage of the components and there is an inconvenience in retrieval of the tool as the entire trunk unit has to be dismantled. Moreover, such a design leads to a reduction in usable volume due to the humped profile of the lid unit. If we consider an emerging situation where the usage of portable articles such as files, documents, and laptop and so on are frequent, the humped profile of the lid becomes an obstruction in placement of such articles as a reasonably flat surface is preferable on the trunk unit.
[00011] With the growing awareness towards environment pollution, stringent emission norms for automobiles have gained momentum. Tremendous research has led to the development of alternate methods to ensure cleaner exhaust gas. One such advanced technology involves a fuel-injector unit wherein a fuel injector nozzle is directly used to pump a homogeneous air-fuel mixture into combustion chamber leading to more clean combustion than that of the carburetor- type.
[00012] Another major advantage of the fuel injection unit is that since the fuel flow is not directed by external force (e.g. gravitational force); the orientation of the engine does not impact the functioning. This provides a scope to design the engine unit in a compact manner by reducing the number of mechanical components. A reduction in number of mechanical components renders the unit with lower wear and tear damages and significantly brings down the number of services which is required for ascertaining durability. There is also a scope to improve the design of the trunk unit.
[00013] One such construction of the trunk unit for a fuel injection system is described below. In order to prevent interference with engine components, a relief in the form of a humped shape has been integrally formed on the storage box above the intake system and the resulting hump enters inside the helmet opening, thus enhancing usage of space by the helmet. As this downwardly concave portion is formed integral to the storage box, in the shape of a hump, the warping-type defects in the components is eliminated; as a result of this, the stiffness of the storage box is better and a considerable space occupied by this hump is utilized by the hollow space inside the helmet. However, even though the advanced design of fuel injection units has automatic setting of idling status of the engine through embedded feedback systems, in a scenario where it fails to set it to desirable limit, an adjustable member is still provided. For example, the power requirements on an upwardly sloped road are different than that of a leveled road. In such an unpredictable situation, the rider will need to remove the whole storage box, which is fastened onto the frame, to access the underlying adjustable member. This leads to a time-consuming process and the rider has to handle the heavy storage box and seat unit after removing it from the vehicle. Moreover, consider a case where the helmet is being used by the rider; there is still less space for storing the articles when the helmet is not placed. This construction also fails to provide a reasonably flat surface for the rider to store flat articles such as files, documents, and laptop and so on. It is thus desirable to avoid large undulations on trunk unit walls and to improve its stiffness in addition to providing a reasonably flat space for the rider to store articles conveniently and also provide a convenient access for the rider to modify the orientation of the adjustable member, using a conventionally available tool, when required, by preventing the tool from slipping off onto internal components.
[00014] Thus, there still exists a need provide an adjustable member in the vicinity of the engine for modification of its orientation by rider, based on his/her usage. It is also intended to improve the stiffness of the trunk unit by avoiding warping of the trunk unit during molding. Another intention is to avoid major undulations on the trunk unit surface to provide a reasonably flat space for the rider to store articles, such as files, documents, laptop, and so on, without a compromise on the access for the rider to modify the orientation of the adjustable member when needed. The intent is also to avoid accidental damage of the underlying components and also prevent conventionally available tools from falling off in a non-retrievable manner onto the internal components while the orientation of adjustable member is being modified.
[SUMMARY OF THE INVENTION]
[00015] The current invention addresses the above concerns and other associated concerns in the prior arts, specifically in saddle-ride type vehicles comprising of fuel-injection type of intake system in engines. As per the current invention, an opening is formed integral to a bottom planar face of the bottom wall of trunk unit such that when viewed from a top or a top perspective direction, the rider can locate an adjustable member on the engine unit through this opening and further modify its orientation as needed, using a conventionally available tool. The current invention further comprises a cover which covers this opening whenever there is no requirement to modify the orientation of the adjustable member. The size of this opening is sufficient for modification of the orientation of the adjustable member without exposing other internal components.
[00016] The current invention specifically pertains to a saddle-ride type vehicle comprising of a swing-ably supported engine unit on the frame; the engine unit of which further comprises of an intake system with a fuel injector unit and an adjustable members, such as adjustable bolts, screws, etc., provided in the vicinity of the intake system to enable modification of the engine output.
[00017] As per the first embodiment of the present invention, the cover member is formed separately from the trunk unit and is made up of an elastic material. This enables easy removal of the cover member without using any tools.
[00018] As per second embodiment of the present invention, the cover member, formed separately, has interlocking details to remain latched onto the bottom planar face comprising of complimentary mating details. This prevents the cover member from coming off due to vibration and rattling in riding conditions. It also allows removal of the cover member by applying a minimum predetermined force. [00019] As per the third and fourth embodiment of the present invention, the opening has a circular shape in planar view with diameter ranging between f20 mm to f40 mm. This particular dimension of the opening prevents the conventionally available tool from falling off while making modifications to the adjustable member.
[00020] As per the fifth embodiment of the present invention, the bottom wall of the trunk unit has at least two bottom planar faces joined together by one or more intermediate walls such that when viewed from the side of the vehicle, the planar faces are at different elevation from each other and the opening is provided on one of the bottom planar surfaces. This provides flexibility in designing the bottom wall of the trunk unit based on clearance needed from various underlying components.
[BRIEF DESCRIPTION OF DRAWING]
[00021] The detailed description is described with reference to the accompanying figures. The same numbers are used throughout the drawings with reference to the features and components.
[00022] Figure 1 represents a side view of a saddle-ride type vehicle as per the current invention.
[00023] Figure 2 represents a fragmented top view of the components as per the current invention.
[00024] Figure 3 represents a fragmented sectional side view of the components as per the current invention.
[00025] Figure 4 represents a perspective view of the components as per the current invention.
[00026] Figure 5 represents a fragmented sectional side view of the components as per one embodiment of the current invention.
[00027] Figure 6 represents a fragmented sectional side view of the components as per one embodiment of the current invention.
[DETAILED DESCRIPTION OF THE INVENTION] [00028] The following description provides a detailed explanation of the current invention and its embodiments with the support of the drawings of the associated components. The directions of the vehicle view are with reference to the rider seated on the vehicle. It is to be noted that the longitudinal direction of the vehicle referred in the specification is the direction from front wheel of the vehicle to rear wheel of the vehicle and the lateral direction of the vehicle is the direction from the left hand of the rider to the right hand of the rider; lateral direction also represents the width of the vehicle. The solid line represents the details of the components directly visible in a view and broken lines present the details of a component which is overlapped by the directly visible components in the corresponding view.
[00029] Figure 1 represents a side view of the vehicle when viewed from left side. The saddle-ride type vehicle (100) according to the current invention functionally comprises of an engine unit (101) which generates the power required to propel the vehicle forward, and a frame (102) which further consists of a front frame (103), a central frame (104) and a rear frame (105) joined together to form a frame (102), and a power transmission unit (106) which transfers the power generated by the engine unit (101) to the rear wheel (107) which is located behind the engine unit(101), and a front wheel (108) at front portion of the vehicle below the front frame (103) which is steerable by the rider, and a handle bar unit (109) comprising of a left handle bar grip (110) and a right handle bar grip (111) (not shown) which the rider can use to steer the front wheel (108) in the desired direction, and a front suspension unit (112) for smooth force transmission to the front wheel (108), and a rear suspension unit (113) for smooth force transmission to the rear wheel (107). The front frame (103) consists of a head tube (114) and a down tube (115); the head tube (114) supports the front suspension unit (112) which further support the handle bar unit (109) in a steerable manner and the down tube (115) extends rearward and downward of the head tube (114). The central frame (104) has two tubes (not shown) on the left and right of the vehicle extending away from each other in a rearward direction. The left and right tubes are connected by a cross frame (not shown) extending in vehicle width direction. These left and right tubes further extend rearward and upward to form the rear frame (105) which supports other units of the vehicle at rear portion.
[00030] A front cowl unit (116) is provided ahead of the head tube (114) for covering the head tube (114) when viewed from front of the vehicle. A leg shield (117), extending downwards from the head tube (115), covers the head tube (114) and down tube (115) from the rear side. A front fender (118) is provided above the front wheel (108), in the vicinity of the front suspension unit (112), to prevent mud splashing onto the internal components of the vehicle at front portion. A handle bar rear cowl unit (119) at least partly covers the handle bar unit (109), from the rear side. A handle bar front cowl unit (120) at least partly covers the handle bar unit (109) from front side. A headlamp unit (121) is disposed on the handle bar front cowl unit (120) and mirror units (122,123) are disposed on the handle bar unit (109) through the handle bar front cowl unit (120). An interfacing portion of the handle bar front cowl unit(120) and handle bar rear cowl unit (119) has a cut-out zone (not shown) on left side and right side for projecting the left handle bar grip (110) and right handle bar grip (111) (not shown) respectively. A leg resting panel (124) is provided above the central frame (104) to cover the top portion of central frame (104) and a bottom cowl (125) is provided below the central frame (104) to cover the bottom portion of the central frame (104).
[00031] On the rear side, a trunk unit (126) is disposed, at the space between the left and right tubes at the rear portion of the vehicle above the engine unit (101), to store articles such as laptop, documents, and files and so on. The trunk unit (126) is mounted onto the cross tube at the front zone and rear zone, thus getting supported by the rear frame (105). A seat unit (127) is provided, above the trunk unit (126) and extending throughout the rear frame (105), for the rider to sit over and maneuver the vehicle. The seat unit (127) is mounted onto the vehicle through a hinge unit (128), provided on the trunk unit (126), such that the seat can be opened by rotating it about the hinge unit (128) to provide access to the store room(129) on the trunk unit (126). [00032] A side cowl unit (130) is provided on the left and right sides of the rear frame (105) so as to cover the internal components when viewed from left side of the vehicle and right side of the vehicle respectively. A front cover (131) is disposed ahead of the trunk unit (126) and below the seat unit (127) to cover the internal components, such as engine (101), frame (102) in a vehicle perspective view. A rear cover (132) is provide rearward to the rear frame (105) and an opening formed by assembling the rear cover (132) and the side cowl unit (130) is used to place a tail lamp unit (133) on the rear side. A rear fender (134) is disposed above the rear wheel (107) to prevent mud splashing onto internal components while riding. A grab rail (135) is disposed in the vicinity of the seat unit (127), on the rear portion of the vehicle, to enable a pillion rider to grab for support.
[00033] Figure 2 to Figure 6 also present the aspects of current invention and its embodiments. Figure 2 is a fragmented top view of the vehicle without the seat assembly. Figure 3 presents the sectional left side view of the vehicle, with the section drawn along the line A in Figure 2. Figure 4 is a perspective view of the trunk unit (126).
[00034] As per the current invention, the engine unit (101) has an intake system (201) with a fuel injector unit (202) and an adjustable member (203), such as an adjustable bolt, screw, etc. is provided to modify the output of the engine unit (101) for desired performance. Further, the trunk unit (126), as per the current invention, comprises of erected walls (204, 205,206,207) which are formed integral to the bottom wall (208) to provide a store room (129) for placing articles such that the erected walls surround the periphery of the store room (129). The bottom wall (208) of the trunk unit (126) comprises of plurality of bottom planar faces (209,210) which are joined together by intermediate walls (211). These bottom planar faces (209,210) are at different elevation levels from each other with respect to the ground when viewed from either the left or the right side of the vehicle. An opening (212) is formed integrally on one of the bottom planar faces (209,210) immediately above the adjustable member (203) so as to be directly visible when viewed from a top or a top perspective view after opening the seat unit (127). The opening (212) has a length and width along the longitudinal direction and vehicle lateral direction respectively, which are larger than the length and width of the adjustable member (203) along vehicle longitudinal direction and vehicle lateral direction respectively. At least a portion of the opening (212) overlaps with the adjustable member (203) to provide accessibility of the adjustable member (203). A conventionally available tool (214) can be used to modify the orientation of this adjustable member (203) through this opening (212). This opening (212) is provided with a cover member (213), which covers the opening (212) while there is no requirement to access the adjustable member. The size of this opening (212) formed is sufficient to adjust the orientation of the adjustable member by the rider using a conventionally available tool, but at the same time restricts the tool from falling through the opening (212), thereby preventing accidental damage to underlying components while accessing the adjustment member.
[00035] The first and second embodiment of the current invention is presented in Figure 5 and Figure 6 respectively which are the side fragmented views of a section taken along the line A in Figure 2. As per first embodiment of the current invention, the cover member (213) is formed separately and is made up of an elastic material. The cover member (213) can be placed on the bottom planar faces (209,210) and the interfacing details of the cover member (213) matched with that of the opening
(212). This enables easier removal and attachment of the cover member (213) without using any tool due to flexibility of the elastic material. As per second embodiment of the current invention, the cover member (213) is formed integrally and has interlocking detail (601) to enable easy placement of the cover member
(213) on the bottom planar face (209,210) of the trunk unit (126) in a detachable manner from the opening. Such detail prevents the need of fasteners which would otherwise require conventional tools to enable removal. On one hand, such a construction prevents the cover member (213) from coming off the opening (212) due to shake and vibrations while riding, and on the other hand, it facilitates removal of the cover member (213) with a minimum predetermined force whenever necessary. For example, providing an interlock detail (601), such as a snap-fit, as shown in Figure 6 will allow the cover member to be detached with a pre determined force and also prevent the cover member (213) from coming off in riding conditions. Such a cover member (213) also helps in reducing the assembly time and servicing time of the vehicle.
[00036] The third and fourth embodiment defines the specific shape and geometric details of the opening as per the current invention. According to the third embodiment, the opening (212) has a circular shape in a planar view and as per the fourth embodiment, the diameter of the circular shape ranges between f20 mm to f40 mm. This range of diameter will prevent the access to other undesired locations under the seat unit. However, it will allow the tool to enter for accessing the adjustable member. This diameter range also prevents the conventionally available tools from falling and getting stuck inside in a non-retrievable manner.
[00037] The fifth embodiment of the present invention defines a specific construction of the bottom wall (208) of the trunk unit (126) comprising at least two bottom planar faces (209,210) joined together by one or more intermediate walls (211) such that when viewed from the side of the vehicle, the bottom planar faces are at different elevation level from each other with respect to ground level and the opening (212) can be provided on one of the bottom planar faces (209,210). This embodiment facilitates the provision to accommodate any other configuration of the underlying components which might require localized clearance from the trunk unit (126). For example, if an additional part such as a battery is placed ahead of an engine at an elevated position, instead of shifting the entire bottom wall of the trunk unit upwards for clearance, the bottom wall can have two separate bottom planar faces, at least one of which has the required clearance with the battery unit. These bottom planar faces can be joined together by an intermediate wall. Thus, the reduction in volume of the trunk unit (126) can be minimized as per this embodiment.
[00038] Thus, as per the current invention and its associated embodiments, shape of the bottom wall is simple so as to prevent any major undulations. The tendency of warping during injection molding is drastically reduced due to the size, location and shape of the opening. This further leads to an improved stiffness of the trunk unit and the fit quality is retained throughout the usage of the vehicle. The trunk unit as per the current invention also provided a reasonably flatter surface for convenient storing of articles such as files, documents, and laptop and so on. The bottom planar faces and intermediate walls are configured such that the operating clearance from the engine unit and other underlying components is achieved. There is also flexibility in designing the cover member based on futuristic requirements. On one hand, the embodiments highlight certain design criteria for the cover member to prevent it from coming off the opening during riding conditions and on the other hand, the design details enable detachment of the cover member with a minimum required force using a conventionally available tool. The size of the opening is sufficient for a conventionally available tool to enter through the cavity and modify the orientation of the adjustable member, but not sufficient for the tool to fall down through this opening; this prevents accidental damage of the internal components by exposing only the required portion of the intake system for modification.
[00039] Although with the support of the figures and detailed description, the best mode to carry out the invention has been explained, it is to be noted that the scope of the current invention not limited by the specified invention and its embodiments, as methodological improvements or modifications can be incorporated based on future requirements without principally deviating from the concepts applied in the current invention.
[List of reference symbols]
Engine unit - 101
Frame - 102 Front frame - 103 Central frame - 104
Rear frame - 105 Power transmission unit - 106
Rear wheel - 107 Front wheel - 108 Handle bar unit - 109 Left handle bar grip - 110 Front suspension unit - 112 Rear suspension unit - 113 Head tube - 114 Down tube - 115 Front cowl unit- 116 Leg shield - 117 Front fender - 118 Handle bar rear cowl unit - 119 Handle bar front cowl unit - 120 Headlamp unit - 121 Mirror units - 122,123 Leg resting panel - 124 Bottom cowl - 125 Trunk Unit- 126 Seat unit - 127 Hinge unit - 128 Store room - 129 Side cowl unit - 130
Front cover - 131 Rear cover - 132
Lamp unit - 133 Rear fender - 134 Grab rail - 135 Intake system - 201 Fuel injector unit - 202 Adjustable member - 203 Erected walls - 204,205,206,207 Bottom wall - 208 Bottom planar faces - 209,210 Intermediate wall - 211 Opening - 212 Cover member - 213 Tool - 214 Interlock detail - 601

Claims

We claim:
1. A trunk unit (126) in a saddle-ride type vehicle (100), the saddle type vehicle (100) comprising : an engine unit (101) on a frame (102), the engine unit (101) having an intake system (201) with a fuel injector unit (202), and an adjustment member (203) ; and a trunk unit (126) fixed onto the frame (102) and disposed above the engine unit (101) and below a seat unit (127), wherein the trunk unit (126) comprises of a plurality of erected walls (204,205,206,207) formed integral to a bottom wall (208), to provide a store room (129) which is accessible when the seat unit (127) is opened; the bottom wall (208) comprises of at least two bottom planar faces (209,210), formed at different elevation levels from the ground and joined together by an intermediate wall (211), and at least one of the bottom planar faces (209,210) has an opening (212) formed integral to the bottom planar face (209,210) and at least a portion of the opening (212) overlaps with the adjustable member (203).
2. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the opening (212) has a length and width, along vehicle longitudinal direction and vehicle lateral direction respectively, larger than the length and width of the adjustment member (203) along vehicle longitudinal direction and vehicle lateral direction respectively.
3. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the opening (212) is provided with a cover member (213) to secure the access to the adjustment member (203).
4. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the cover member (213) is formed integral to one of the bottom planar faces (209,210) of the trunk unit (126).
5. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the cover member (213) is formed separately and is made up of an elastic material.
6. The trunk unit in a saddle-ride type vehicle (100) as claimed in claim 1 wherein the cover member (213) has interlocking details (601) to remain locked onto the bottom planar face (209,210) of the trunk unit (126) in an open-able manner.
7. The trunk unit in a saddle-ride type vehicle (100) as claimed in claim 1 wherein the cover member (213) can be removed. .
8. The trunk unit in a saddle-ride type vehicle (100) as claimed in claim 1 wherein the diameter of the circular shape of the opening (212) lies within 20mm and 40mm.
9. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the bottom wall (208) of the trunk unit (126) has two bottom planar faces (209,210) joined together by one intermediate wall (211) such that when viewed from the side of the vehicle, the bottom planar faces (209,210) are at different elevation levels from each other.
10. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the bottom planer faces (209,210) and intermediate wall (211) are configured such that operating clearance from the engine (101) and other underlying components is achieved.
11. The trunk unit in a saddle -ride type vehicle (100) as claimed in claim 1, wherein the portion of the opening (212) at least partially overlaps with the adjustable member (203) such that the size of the opening is enables a conventional tool (214) to enter the opening to adjust the orientation of said adjustable member (203) but at same time restricts the tool from falling off through the opening (212) , thereby preventing accidental damage to the underlying components while accessing said adjustment member (203).
PCT/IN2020/050784 2019-09-11 2020-09-09 Trunk unit in saddle-ride type vehicle WO2021048874A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201941036525 2019-09-11
IN201941036525 2019-09-11

Publications (1)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2921392A1 (en) * 2014-03-19 2015-09-23 Honda Motor Co., Ltd. Motorcycle Storage box
EP3321157A1 (en) * 2016-11-09 2018-05-16 Yamaha Hatsudoki Kabushiki Kaisha Straddled vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2921392A1 (en) * 2014-03-19 2015-09-23 Honda Motor Co., Ltd. Motorcycle Storage box
EP3321157A1 (en) * 2016-11-09 2018-05-16 Yamaha Hatsudoki Kabushiki Kaisha Straddled vehicle

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