WO2023084436A1

WO2023084436A1 - Load-bearing structure with integrated electric drivetrain for the assembly and construction of motorcycles, tricycles and quadricycles

Info

Publication number: WO2023084436A1
Application number: PCT/IB2022/060825
Authority: WO
Inventors: Franco Malenotti
Original assignee: Manarin S.R.L.
Priority date: 2021-11-15
Filing date: 2022-11-10
Publication date: 2023-05-19
Also published as: IT202100028880A1

Abstract

Load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction comprising two shaped and load-bearing structural bodies which constitute a unit with integrated drivetrain device, comprising at least one electric motor, a transmission assembly, an inverter, an electronic control unit, a rheostat and power supply batteries, as well as charging sockets and connection sockets for the connection to accessory batteries as well as other components necessary for the autonomous operation of the electric motor, said shaped structural bodies being arranged for the support and engagement of different components of the chassis set-up of a motorcycle including a frame connecting to the steering sleeve, a saddle post frame and a rear swinging fork.

Description

LOAD-BEARING STRUCTURE WITH INTEGRATED ELECTRIC DRIVETRAIN FOR THE ASSEMBLY AND CONSTRUCTION OF MOTORCYCLES, TRICYCLES AND QUADRICYCLES

[0001] The present invention relates to a load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction.

Field of Application

[0002] The innovation is particularly but not exclusively applied in the industrial field of the production of electric traction vehicles, in particular motorcycles, tricycles and quadricycles.

[0003] Within the scope of the category of transport and locomotion, motor vehicles currently account for the majority of vehicles commonly used for private travel. Motorcycles are among the vehicles commonly used in the category of vehicles for private transport, and in particular motorcycles the characterisation of which consists of a vehicle provided with two wheels in line with the drivetrain movement generated by a motor connected by transmission to the wheel or to the driving wheels. Without claiming to be exhaustive, given the current considerable variety of types of motorcycles which are currently known, they recognise at least common structural components which consist of at least a chassis set-up and a motor, as well as superstructure! elements which can fulfil specific functions to complete the vehicle. To date, the vast majority of motorcycles are provided, in reference to the drivetrain means, with an endothermic motor whose architecture can be the most varied depending on the specific technological choices adopted by the manufacturer, the type of drivetrain used and its specific architecture significantly affecting the chassis set-up, which has recently undergone evolutions related both to the motor solutions used, as well as to purely constructive assembly needs. In line with the first approximation, there has been a passage from traditional motorcycle configurations in which the motor was supported by a specific frame, without such a motor acting as an integral element of the chassis set-up, to solutions for which the motor structure is placed as a structural element of the chassis set-up itself. Moreover, both the push towards ever greater economies of scale by the industries of the field, as well as the emergence and consolidation of independent assemblers, has led to the evolution of solutions capable of allowing a sort of modularity in the structuring of certain chassis set-up elements which allow easy integration and easy adaptation to the drivetrain used.

[0004] In relatively recent times, especially in view of the need to limit the polluting emissions typical of endothermic motors, as well as the further needs to limit the use of fossil fuels, there has also been the development of electric traction motorcycles, a development made possible above all by the evolution of batteries and the connected electric motors. Although with reduced dimensions, the latter allow the development of considerable power. In the ever-increasing drive to optimise and expand production possibilities, also by companies in the motorcycle field and more broadly of tricycles or light quadricycles, there is a strongly felt need to have a powertrain, at least understood as comprising the electric motor and at least part of the transmission, implemented so as to allow the main chassis set-up components to be engaged thereon which will constitute the final fitting out of the motorcycle being construed. In the current state of the prior art, based on the needs aimed at improving and simplifying the assembly and fitting out of motorcycles, some solutions of load-bearing support devices have been introduced which are capable of acting as an integral part of the chassis set-up, sometimes integrating the drivetrain devices.

State of the art

[0005] Also in the current patent literature, it is possible to trace some solutions of load-bearing support devices for the construction of motorcycles implemented to be an integral part of the chassis set-up, among which solutions the following are mentioned by way of example:

DI n. GB2592048

D2 n. US2011036657

D3 n. WO2013019727

[0006] In DI, a support structure solution for a motorcycle is synthetically described in which said support structure comprises a lower structural portion and an upper structural portion, the latter which is removable relative to the lower structural portion, in which the lower structural portion comprises a central frame, a front wheel assembly pivotally connected to the front portion of the central frame and a rear wheel assembly pivotally connected to the rear portion of said central frame and in which the rear wheel assembly comprises a motor device and a transmission assembly. It is further envisaged that the lower structural portion of the support structure referred to in the solution can house batteries and that the motor device can be of an electrical type, the latter of which is envisaged to be able to operate the rear wheel by means of a transmission chain.

[0007] A frame solution for an electric vehicle is synthetically described in D2 which includes a frame structure comprising two side-by-side beam elements in which the front ends of said elements are mutually connected to form a steering sleeve capable of rotatably engaging a portion of a fork assembly retaining the front wheel of the electric vehicle and in which each beam element comprises a rear end fixedly connected to a housing for the motor. It is further envisaged that in said solution the space between the two beam elements is configured to contain one or more battery modules therein, said frame further comprising a swinging fork provided with a front end connected to an articulation point of the motor housing, where the swinging fork further comprises a rear end capable of supporting the rear wheel of the electric vehicle.

[0008] D3 briefly traces the description of a support structure solution for the construction of electric motorcycles, in which the support structure is provided consisting of anti-torsion elements which are able to appropriately support an electric motor and in which said support structure is provided with means for connecting a front suspension and means for connecting a rear suspension where, in said solution, the support structure is implemented so as to also be able to engage further elements of the chassis set-up of a motorcycle. Drawbacks

[0009] All the known solutions of load-bearing support devices for the construction of motorcycles have defects and limitations which result in disadvantages.

[0010] A first drawback, in the opinion of the applicant, characterising all the solutions of load-bearing support devices for the construction of motorcycles, referred to in the known state of the art, was found to exist in the detected circumstance which all the known solutions do not allow to integrate optimally, in a single device, both structural frame elements supporting component parts of the chassis set-up, as well as drivetrain and transmission devices, as well as the power supply of the drivetrain devices and auxiliaries to the drivetrain itself.

[0011] A second drawback, in the opinion of the applicant, characterising all the solutions of load-bearing support devices for the construction of motorcycles, referred to in the state of the art, was found to exist in the detected circumstance that all the known solutions are not structured so as to allow a facilitation of the mounting or assembly of electric traction motorcycles.

[0012] A third drawback, in the opinion of the applicant, characterising all the solutions of load-bearing support devices for the construction of motorcycles, referred to in the known state of the art, was found to exist in the detected circumstance that all the known solutions are not arranged to allow the mounting or assembly of electric traction motorcycles whose component parts may be of different type and construction origin. [0013] A further drawback, in the opinion of the applicant, characterising all the solutions of load-bearing support devices for the construction of motorcycles, referred to in the state of the art, has been found to exist in the detected circumstance that all the known solutions are not arranged to allow an optimal adaptation to the different needs of the different assemblers or manufacturers.

[0014] Overall, from these introductory considerations, it is clear that the identification of alternative solutions is certainly of paramount importance.

Summary of the invention

[0015] This and other objects are achieved with the present innovation according to the features referred to in the appended claims by solving the problems described by means of a load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction comprising two shaped and load-bearing structural bodies which constitute a unit with integrated drivetrain device, comprising at least one electric motor, a transmission assembly, an inverter, an electronic control unit, a rheostat and power supply batteries, as well as charging sockets and connection sockets for the connection to accessory batteries as well as other components necessary for the autonomous operation of the electric motor, said shaped structural bodies being arranged for the support and engagement of different components of the chassis set-up of a motorcycle including a frame connecting to the steering sleeve, a saddle post frame and a rear swinging fork. Objects and Advantages

[0016] Thereby, through the considerable creative contribution whose effect constitutes immediate technical progress, multiple advantages are achieved. [0017] A first advantageous object of the present solution is to obtain a loadbearing structure with an integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction through the innovative structure of which allows to optimally integrate in a single device both structural support elements for component parts of the chassis set-up, as well as drivetrain and transmission devices, as well as power supply of the drivetrain devices and auxiliaries to the drivetrain itself.

[0018] A second advantageous object of the present solution is to obtain a load-bearing structure with an integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction through the innovative structure of which it is possible to achieve a facilitation of the mounting or assembly of electric motorcycles. [0019] A third advantageous object of the present solution is to obtain a loadbearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction through the innovative structure of which it is possible to allow the mounting or assembly of electric motorcycles whose component parts can be of different type and construction origin.

[0020] Another advantageous object of the present solution is to obtain a load-bearing structure with an integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction through the innovative structure of which allows to achieve an optimal adaptation to the different needs of the different assemblers or manufacturers.

[0021] These and other advantages will appear from the following detailed description of some preferential embodiment solutions with the help of the schematic accompanying drawings whose details of execution are not to be understood as limiting but only exemplary.

Content of the drawings

Figure 1 illustrates a front axonometric three-quarters view from the top of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the invention;

Figure 2 illustrates a rear axonometric three-quarters view from the top of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the invention;

Figure 3 illustrates a lateral orthogonal view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the invention;

Figure 4 illustrates a front orthogonal view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the invention; Figure 5 illustrates a rear orthogonal view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the invention;

Figure 6 illustrates a top plan orthogonal view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the invention;

Figure 7 illustrates a front axonometric three-quarters view from the top of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to in the object of the present invention in which the electrical connection devices, the accessory batteries and the device for connecting to the electric network are also schematically depicted;

Figure 8 illustrates a lateral view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to the finding object of the present invention to which the main elements of the chassis set-up of a motorcycle are associated in an example of a possible fitting out in which at least some elements of the chassis set-up associated with the load-bearing structure with integrated electric drivetrain device are of the tubular type;

Figure 9 illustrates a lateral view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to the finding object of the present invention, to which the main elements of the chassis set-up of a motorcycle are associated in a possible variant referred to in figure 8, in which at least some elements of the chassis set-up associated with the load-bearing structure with integrated electric drivetrain device are made of cast aluminium or sheet metal;

Figure 10 illustrates a lateral view of the load-bearing structure with integrated electric drivetrain device for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction referred to the finding object of the present invention, to which the main elements of the chassis set-up of a motorcycle are associated in a possible variant referred to in figure 8, in which at least some elements of the chassis set-up associated with the load-bearing structure with integrated electric drivetrain device are made of composite fibres.

Practical embodiment of the invention

[0022] Referring also to the illustrations in figures 1 to 10, a load-bearing structure with integrated electric drivetrain device (1) is described for the assembly and construction of motorcycles or even tricycles and quadricycles with electric traction comprising at least one electric motor and the devices adapted to the operation thereof, all constituting both a structural and a drivetrain unit, which load-bearing structure with integrated electric drivetrain device (1) as depicted in the assembly view in figure 1, illustrating a possible embodiment of the solution referred to in the invention, to be considered as a preferential but not exclusive embodiment solution, comprises a first shaped structural body (2) and a second shaped structural body (3) the latter are made in a material suitable for the intended use which envisages that the same are structurally load-bearing, in the embodiment which is described and preferably the construction material of said shaped structural bodies (2, 3) being metallic and preferably metallic alloy.

[0023] Further in detail of the embodiment which is described, it is envisaged that the first shaped structural body (2) is oppositely facing the second shaped structural body (3), each shaped structural body (2, 3) being appropriately implemented so as to allow, in a known manner, the mutual solidarity, not limitedly, also by means of known engagement devices which can also be of the type with mutual interconnection or, in any case, of the type known by way of example and not limitedly by means of the use of threaded engagement devices placed in appropriate solidarity seats of the known type which can also be provided with appropriate connection bodies of known type, not illustrated, with which each shaped structural body (2, 3) is provided.

[0024] As particularly illustrated in the illustrations in figures 1 to 5, although said shaped structural bodies (2, 3) can be of different shape depending on the specific construction needs, in the embodiment described and preferably, although not limitedly, it is envisaged that both the first shaped structural body (2) and the second shaped structural body (3) are in a trapezoidal shape, with a greater base facing downwards. The mutual engagement of said shaped structural bodies (2, 3) determines an essentially truncated pyramidal rigid structure, where it is envisaged that each of said shaped structural bodies (2, 3) can be structured so as to have appropriate reinforcement ribs, as well as envisaging the possibility that said shaped structural bodies (2, 3) can be mutually engaged also by using appropriate connecting plates or bodies of a known type.

[0025] Furthermore, in order to allow that the load-bearing structure with integrated electric drivetrain device (1) can be solidal with the elements necessary for the constitution of the motorcycle's chassis set-up, it is envisaged that both the first shaped structural body (2) and the second shaped structural body (3), at the perimeter, are each provided with a series of engagement seats (4) the latter which can also be differently implemented in order to respond to the anchoring function of the different components of the chassis set-up used, it being envisaged, in the example, that the engagement seats (4) of which are provided each shaped structural body (2, 3) are mutually on the same axis.

[0026] In the embodiment which is described, preferably even if not limitedly, the location of said engagement seats (4) of which are provided the shaped structural bodies (2, 3) is that illustrated in the illustrations in figure 3, since it is envisaged that each shaped structural body (2, 3) has, in the example, at the proximity of the first oblique perimetral side (21, 31) and the second oblique perimetral side (22, 32), three engagement seats (4) of the same calibre, while at the proximity of the minor perimetral horizontal side (23, 33), two engagement seats (4) and at the major perimetral horizontal side (24, 34), at least four engagement seats (4) of the same calibre.

[0027] Further, in the example, it is envisaged that at the proximity of the first upper vertex (25, 35), the second upper vertex (26, 36), the first lower vertex (27, 37) and the second lower vertex (28, 38), both the first shaped structural body (2) and the second shaped structural body (3) are provided with an engagement seat (4) where, in the example, the engagement seats (4) of which are provided the vertices (25, 26, 27, 28, 35, 36, 37, 38) of the shaped structural bodies (2, 3) of the load-bearing structure with integrated electric drivetrain device (1) are envisaged with a larger calibre relative to the engagement seats (4) of which are provided the perimetral sides (21, 22, 23, 24, 31, 32, 33, 34) of the shaped structural bodies (2, 3).

[0028] In the embodiment described, the engagement seats (4) of which are provided the perimetral sides (21, 22, 23, 24, 31, 32, 33, 34) of the first shaped structural body (2) and the second shaped structural body (3) are envisaged to be equally spaced being arranged at the same distance from each other and, in the example, being envisaged to be of the same calibre. More in detail, as shown in the illustration in figure 3, it is envisaged that at the first lower vertex (27, 37) each shaped structural body (2, 3) is provided with an engagement seat (4) implemented so as to allow the convenient anchoring of the chassis set-up component of the motorcycle being constructed consisting of the rear swinging fork (5).

[0029] Furthermore, in order to allow the load-bearing structure with integrated electric drivetrain device (1) referred to in the present invention to be able to implement the appropriate engagement of the part of the chassis set-up of the motorcycle being constructed consisting of the rear shock absorber (6), it is envisaged that both the first shaped structural body (2) and the second shaped structural body (3) are each provided with a protruding engagement body (29, 39) which is protruding from an area near the first upper vertex (25) and the second upper vertex (35), in which each engagement protruding body (29, 39) is provided with an anchoring seat (291, 391) for a known engagement device. Furthermore, in order to allow the engagement to the load-bearing structure with integrated electric drivetrain device (1) of the further chassis set-up elements, particularly of a motorcycle, it is envisaged that the engagement seats (4) which are placed at the first lower vertex (27, 37) of each shaped structural body (2, 3) are implemented in accordance with what is illustrated in particular in the illustrations in figures 2 and 3, in any case being implemented so as to be adapted to allow the appropriate engagement of the rear swinging fork (5) of the motorcycle being constructed.

[0030] In any case, as particularly depicted in the illustrations in figures 8 to 10, it is envisaged that the engagement seats (4), of which are provided with the shaped structural bodies (2, 3), are positioned at least so as to allow the engagement of at least the components of the chassis set-up of the motorcycle being constructed consisting at least of the frame connecting the steering sleeve (7), the saddle post frame (8), the rear swinging fork (5), the rear shock absorber (6), the supports of the pedal controls and the driver and passenger platforms (9), it being envisaged that the aforementioned components of the chassis set-up are of the type known exemplarily being able to be independent of whether the same are made in tubular, in trellis, in cast aluminium casting, in pressed sheet metal or in composite fibres or in any other material compatible with the destination function.

[0031] The load-bearing structure with integrated electric drivetrain device (1) referred to in the invention, given the described features, is able to itself constitute an integral element of the chassis set-up of the motorcycle being constructed, becoming a central structural element thereof. As shown in the illustrations in figures 1 to 10, the load-bearing structure with integrated electric drivetrain device (1) is structured so as to integrate the drivetrain device which is necessarily envisaged to be of an electric type, consisting of at least one electric motor of a known type adapted to provide a motorcycle with electric traction, which electric motor, in the embodiment which is described and preferably, although limitedly, is envisaged to be positioned transversely. In order to support at least one electric motor, in the example, both the first shaped structural body (2) and the second shaped structural body (3) being provided with at least one appropriate motor housing (10, 11) adapted to allow the functional placement thereof, said motor housing (10, 11) being arranged according to the specific electric motor which will be engaged.

[0032] Further in detail of the embodiment described, it is envisaged that the first shaped structural body (2) is provided with a first motor housing (10) and the second shaped structural body (3) is provided with a second motor housing (11) each adapted to allow the functional placement of the electric motor of which is provided the load-bearing structure with an integrated electric drivetrain device (1) where, in the example, it is envisaged that both the first motor housing (10) and the second motor housing (11) are implemented so as to comprise a finned portion (101, 111) arranged so as to allow the convenient cooling of the electric motor.

[0033] Alternatively, it is possible, depending on the specific type of electric motor housed, that both the first motor housing (10) and the second motor housing (11), or at least one of the two, are implemented so as to comprise appropriate and known gaps adapted to allow the liquid cooling of the electric motor, in the latter case envisaging that the load-bearing structure with integrated electric drivetrain device (1) can also be provided with a radiator for the cooling liquid, connected in a known manner and by means of devices of a known type to the gaps of which said motor housings (10, 11) are in this case provided so as to implement a liquid cooling circuit.

[0034] Furthermore, in order to allow the functionality of the electric motor of which is provided the load-bearing structure with integrated electric drivetrain device (1), the latter is implemented so as to integrate in the structure thereof at least those known devices which are necessary to allow the operation thereof and in particular, in the embodiment which is described, the load-bearing structure with integrated electric drivetrain device (1) referred to in the invention, in suitable housings of which it is provided for the purpose, is provided with at least one inverter device (12), at least one electronic control unit and at least one rheostat, said devices being functionally and in a known manner connected in order to allow the operation and control of the electric motor.

[0035] Furthermore, the load-bearing structure with integrated electric drivetrain device (1), always in order to allow the operation of the electric motor of which it is provided, in the example at the bottom thereof, it is provided with quick coupling seats of known type for the positioning and support of power supply batteries (13) of known type. As particularly illustrated in the illustrations in figure 3, it is envisaged that the load-bearing structure with integrated electric drivetrain device (1) referred to in the invention is provided with at least one power supply battery (13), in the example two power supply batteries (13), the latter of which, also by means of devices of known type, are connected to the electric motor for the power supply thereof. Furthermore, always in order to ensure that the electric motor can be adequately powered, it is envisaged that the load-bearing structure with integrated electric drivetrain device (1), referred to in the invention, is further provided with known connection sockets (14) for the connection, for the purpose of power supply, with accessory batteries (15) of which the motorcycle being constructed can be provided. The connection between said accessory batteries (15) and the load-bearing structure with integrated electric drivetrain device (1) occurs by means of electrical connection devices (16) of known type.

[0036] It is further envisaged that the load-bearing structure with integrated electric drivetrain device (1), as particularly illustrated in the illustration in figure 3, is provided with at least one charging socket (17), for domestic or high-power charging by means of an appropriate and well-known connection plug (30), in which the charging socket (17) is of a known type and is adapted to allow charging the power supply batteries (13), of which is provided the load-bearing structure with integrated electric drivetrain device (1), and of the accessory batteries (15) provided with the electric motorcycle provided with the load-bearing structure with integrated electric drivetrain device (1) referred to in the invention, the latter being structured so as to comprise appropriate housings capable of ensuring the convenient placement of the devices with which the load-bearing structure with integrated electric drivetrain device (1) itself is provided. Always in order to allow an adequate power supply of the electric motor of which it is provided, the load-bearing structure with integrated electric drivetrain device (1) referred to in the invention may comprise connections of a known type for any further power supply devices which the manufacturer or assembler wants to position.

[0037] Furthermore, in order to make the transmission of motion generated by the operation of the electric motor provided with the load-bearing structure with integrated electric drivetrain device (1) object of the invention possible, it is envisaged that the same is provided with a transmission assembly, of a known type, capable of functionally connecting the electric motor to a pinion (18). The transmission assembly of which the load-bearing structure is intended to be provided with an integrated electric drivetrain device (1) can be both of the one-speed type and of the type with two or more speeds, it being further envisaged that the pinion (18) of which it is provided can be both of the type adapted to allow the transmission of motion to the rear wheel of the motorcycle through the transmission chain, and of the type adapted to allow the transmission of motion to the rear wheel of the motorcycle through the toothed belt. Alternatively, it is also envisaged that the transmission assembly of which is provided the load-bearing structure with integrated electric drivetrain device (1) referred to in the invention is implemented so as to allow the transmission of motion to the rear wheel of the motorcycle by means of a universal joint. As particularly depicted in the illustration in figure 2, it is envisaged that the load-bearing structure with integrated electric drivetrain device (1) is structured so as to comprise an appropriate housing for the transmission assembly (19). [0038] Still a structural feature which is envisaged to be typical of the loadbearing structure with integrated electric drivetrain device (1) referred to in the invention, is that for which both the first shaped structural body (2) and the second shaped structural body (3), as particularly illustrated in figure 6, are each provided with at least one negative lift wing (20) appropriately and in a known manner implemented to promote the aerodynamic attitude of the motorcycle being constructed.

[0039] More specifically, in the detail of the embodiment described, as shown in figure 1, the negative lift wing (20) of which is provided both the first shaped structural body (2) and the second shaped structural body (3) originates from an area near the engagement seat (4) of the second lower vertex (28, 38) to end by intersecting the finned portion (101, 111) of the motor housing (10, 11), said negative lift wing (20) being obliquely placed relative to the greater horizontal perimetral side (24, 34) of the corresponding shaped structural body (2, 3).

[0040] By way of example and alternatively to what is described, it falls within the scope of a possible variant, not illustrated, of the object of the finding of the present invention also the possibility that the load-bearing structure with integrated electric drivetrain device (1) can be made so that it is provided with a single shaped structural body (2, 3) which is implemented, by means of a known art, by way of example and not limitedly, by means of 3D printing, so as to have perimetral seats (4), by way of example obtained in the context of protruding ribbed bodies or in another known manner, which allow the function of allowing the engagement of the chassis set-up components of the motorcycle being constructed to be implemented as envisaged in the described embodiment, including at least the rear swinging fork (5), the rear shock absorber (6), the frame connecting to the steering sleeve (7), the saddle post frame (8) and the driver and passenger platforms (9). Furthermore, the possible variant in which there is only one shaped structural body (2, 3) envisages that it itself integrates at least one motor housing (10, 11), engaging the electric motor, and is appropriately structured to allow the functional engagement of at least all the described devices which allow the operation of the electric motor itself, such as, but not limited to, the inverter device (12), the electronic control unit, the rheostat, the coupling seats for the power batteries (13), the connection sockets (14), the charging sockets (17). The shaped structural body (2, 3) of the envisaged possible variant of the invention, is further implemented so as to comprise an appropriate housing for the transmission assembly (19), the envisaged shaped structural body (2, 3) being further able to comprise at least one negative lift wing (20).

[0041] It is understood that the solution referred to in the object of the present invention can be implemented in all the possible variants adapted to achieve the set objectives, in particular and not limitedly, that of obtaining a load-bearing structural and drivetrain unit to which elements of the chassis set-up of an electric traction motorcycle can be conveniently associated and whose electric motor is provided with all the devices and components adapted to allow the operation thereof, as well as a transmission which allows the use of the motion generated by the motor.

LEGEND

(1) load-bearing structure with integrated electric drivetrain device (2) first shaped structural body

(21) first oblique perimetral side

(22) second oblique perimetral side

(23) minor horizontal perimetral side

(24) greater horizontal perimetral side

(25) first upper vertex

(26) second upper vertex

(27) first lower vertex

(28) second lower vertex

(29) protruding engagement body

(291) anchoring seat

(3) second shaped structural body

(31) first oblique perimetral side

(32) second oblique perimetral side

(33) minor horizontal perimetral side

(34) greater horizontal perimetral side

(35) first upper vertex

(36) second upper vertex

(37) first lower vertex

(38) second lower vertex

(39) protruding engagement body

(391) anchoring seat

(4) engagement seats

(5) rear swinging fork

(6) rear shock absorber (7) connecting frame to the steering sleeve

(8) saddle post frame

(9) driver and passenger platforms

(10) first motor housing (101) finned portion

(11) second motor housing

(111) finned portion

(12) inverter device

(13) power supply batteries (14) connection socket

(15) accessory batteries

(16) electrical connection devices

(17) charging socket

(18) pinion (19) housing for the transmission assembly

(20) negative lift wing

(30) connection plug

Claims

1. A load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles capable of constituting a support for the engagement of the chassis set-up components characterised in that it comprises at least one load-bearing, shaped structural body (2), which is perimetrally at least partially provided with engagement seats (4) for anchoring at least different components of the chassis set-up of a motorcycle and integrates at least one electric motor, wherein the load-bearing structure with integrated electric drivetrain device (1) constitutes a load-bearing and propulsion structural unit.

2. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to the preceding claim, characterised in that at least one shaped structural body (2) comprises at least one engagement seat (4) for the rear swinging fork (5).

3. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to the preceding claim, characterised in that it comprises a first shaped structural body (2) solidal with an opposite second shaped structural body (3), wherein both the first shaped structural body (2) and the second shaped structural body (3) are each at least partially perimetrally provided with engagement seats (4) for the engagement of at least the components of the chassis set-up of a motorcycle consisting at least of the frame for connection to the steering sleeve (7), the saddle post frame (8) and the rear swinging fork (5), the latter of which can be made indifferently in tubular, in trellis, in cast aluminium, in pressed sheet metal or in composite fibres.

4. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to the preceding claim, characterised in that at least one shaped structural body (2, 3) is provided with at least one projecting engagement body (29, 39) provided with at least one anchoring seat (291, 391) for engaging at least one rear shock absorber (6) and at least one shaped structural body (2, 3) is provided with engagement seats (4) for engaging at least the supports of the pedal controls and the driver and passenger platforms (9).

5. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims, characterised in that each shaped structural body (2, 3) has a trapezoidal shape and at the proximity of the first oblique perimetral side (21, 31) and of the second oblique perimetral side (22, 32) it comprises three engagement seats (4) of the same calibre, while at the proximity of the minor perimetral horizontal side (23, 33) each shaped structural body (2, 3) comprises two engagement seats (4) and at the proximity of the major perimetral horizontal side (24, 34) each shaped structural body (2, 3) comprises at least four engagement seats (4) of the same calibre, where at the proximity of the first upper vertex (25, 35) and of the second upper vertex (26, 36), of the first lower vertex 25 (27, 37) and the second lower vertex (28, 38), both the first shaped structural body (2) and the second shaped structural body (3) are provided with a shaped engagement seat (4) of a greater calibre relative to the engagement seats (4) which are provided on the perimetral sides (21, 22, 23, 24, 31, 32, 33, 34) of the shaped structural bodies (2, 3).

6. The load-bearing structure with an integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims characterised in that at least one shaped structural body (2, 3) is provided with at least one transverse motor housing (10, 11), for at least one electric motor, wherein the motor housing (10, 11) can comprise a finned portion (101, 111) or be provided with at least one gap for the circulation of a cooling liquid.

7. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims, characterised in that it comprises at least one quick coupling seat for the connection of at least one power supply battery (13).

8. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims characterised in that, for the operation of the electric motor with which it is provided, it comprises at least one inverter device (12), at least one electronic control unit and at least one rheostat.

9. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims characterised in that it comprises at least one connection socket (14) for connection, by means of electrical connection devices (16), to at least one accessory battery (15) and 26 comprises at least one charging socket (17) for charging at least the power batteries (13) and the accessory batteries (15).

10. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims, characterised in that it comprises, connected to the electric motor, at least one transmission assembly, at one or more speeds, provided with a pinion (18).

11. The load-bearing structure with integrated electric drivetrain device (1) for the construction of electric motorcycles, tricycles and quadricycles according to at least one of the preceding claims, characterised in that it comprises at least one negative lift wing (20).