Provided herein is a power assisted motorized vehicle which can be operated in a manual mode or a motorized mode or in a combination of manual and motorized modes. The vehicle includes, inter alia, a frame connected to at least one fork capable of supporting a wheel having a first driven sprocket assembly and a second driven sprocket assembly, a rechargeable electrical power supply attached to the frame, a motor controller attached to the frame, an electric motor supported by the frame and attached to a first driving sprocket which is coupled to the first driven sprocket assembly and a manual pedal assembly supported by the frame and comprising a pedal crank shaft with two pedals and a second driving sprocket which is coupled to the second driven sprocket assembly.
Electrically assisted motorized cycles which can be operated in a manual mode or in a motorized mode or in a combination of manual and motorized modes have been previously described in the past. However, problems associated with integration of pedal location with electrical motor placement, cycle stability during operation, sufficient power, battery charging and battery removal have prevented widespread use of these environmentally acceptable vehicles.
Accordingly, what is needed is an electrically assisted motorized cycle which can be operated as described, supra, in an environmentally acceptable mode, smoothly integrates pedal location with motor placement, is dynamically stable when operational and has substantial power output with simple and efficient battery charging and battery removal.
The present invention satisfies these and other needs by providing a novel power assisted vehicle. Also provided are a novel battery saddle, a novel electronic cable assembly, a novel throttle assembly, a novel motor mount assembly, a novel battery assembly, and a novel battery quick release assembly.
In one aspect, a power assisted vehicle is provided which includes a frame connected to at least one fork capable of supporting a wheel having a first driven sprocket assembly and a second driven sprocket assembly, a rechargeable electrical power supply attached to the frame, a motor controller attached to the frame, an electric motor supported by the frame and attached to a first driving sprocket which is coupled to the first driven sprocket assembly, a manual pedal assembly supported by the frame and comprising a pedal crank shaft with two pedals and a second driving sprocket which is coupled to the second driven sprocket assembly, where the motor is bi-directionally coupled to the wheel, and the pedal assembly is uni-directionally coupled to the wheel and where the location of the electric motor intersects or is tangent to the space defined by rotation of the pedal assembly and where the power supply is electrically connected to the motor controller.
In some embodiments, a power assisted vehicle is provided which includes a frame connected to a front fork and a rear fork supporting a front wheel and a rear wheel, a throttle assembly attached to the front fork, a crossbar connected to the front fork, a seat supported by the crossbar and frame, a rechargeable electrical power supply attached to the crossbar, a motor controller attached to the crossbar, a motor mount attached to the frame, a center stand attached to the motor mount, an electric motor attached to the motor mount and having a first driving sprocket coupled to a first driven sprocket assembly, wherein the motor is bi-directionally coupled to the rear wheel, a manual pedal assembly supported by the frame comprising a pedal crank shaft with two pedals and a second driving sprocket coupled to a second driven sprocket assembly, where the pedal assembly is uni-directionally coupled to the rear wheel, a flexible motor drive member connecting the first drive sprocket to the first driven sprocket assembly coupled to the rear wheel and a flexible pedal drive member connecting the second driving sprocket to the second driven sprocket coupled to the rear wheel, where the location of the motor intersects or is tangent to the space defined by rotation of the pedal assembly and where the motor controller is electrically connected to the power supply, the throttle assembly and the motor.
In another aspect, a semi-flexible cable harness assembly for a power assisted vehicle is provided. The cable harness assembly includes a first cable harness housing attached to a fork of the vehicle, said housing pivoting with the fork, a second cable harness housing attached to the frame of the vehicle and a cable harness twisting member that connects the first cable harness housing to the second cable harness housing, said cable harness twisting member being substantially co-linear with the pivoting axis of the fork where pivoting of the fork rotates the first cable harness housing relative to the second cable harness housing.
In still another aspect, a motor mount assembly is provided. The motor mount assembly includes a center stand attached to a motor mount and an electric motor having a first motor drive sprocket wherein the electric motor is attached to the motor mount.
In still another aspect, a battery assembly is provided. The battery assembly includes battery bricks arranged in series and a housing equipped with cell taps and a high power connector where the bricks include cells arranged in parallel.
In still another aspect, a throttle assembly is provided. The throttle assembly includes a housing, a throttle cable housing supported by the housing, a plurality of signal wires attached to the housing, a pulley attached to a electromechanical transducer shaft and a throttle cable attached to the pulley.
In still another aspect, a battery quick release apparatus is provided. The quick release apparatus includes a battery saddle assembly and a lockable battery saddle quick release lever. The saddle assembly includes a battery saddle, a battery saddle retainer and an electrical connection.
a illustrates a right orthographic view of the frame, the battery saddle assembly and the battery quick release apparatus with the battery quick release lever closed and locked;
b illustrates a right orthographic view of the frame, the battery saddle assembly and the battery quick release apparatus with the battery quick release lever open and unlocked with the right battery removed;
a illustrates a right side section view of the battery lever locked and closed;
b illustrates a right side section view of the battery lever unlocked and open;
a illustrates an orthographic view of the motor mount assembly with the kickstand down;
b illustrates a right side view of the motor mount assembly with the kickstand down;
c illustrates an orthographic view of the motor mount assembly with the kickstand up;
d illustrates a right side view of the motor mount assembly with the kickstand up;
a illustrates a battery brick assembly exploded; and
b illustrates a section view of the battery assembly.
Provided herein is a power assisted motorized vehicle which can be operated in a manual mode or a motorized mode or in a combination of manual and motorized modes. The vehicle, inter alia, integrates pedal location with motor placement, has dynamic stability under operating conditions, provides substantial power output with simple, efficient battery charging and battery removal and may include several novel and useful assemblies. The features above are best illustrated by reference to the Figures disclosed herein.
Typical petroleum driven cycles still must obey parking regulations that apply to automobiles. A power-assisted vehicle, such as, for example, the vehicle disclosed herein, meeting state and federal regulations, can legally be operated and parked in locales forbidden to cycles powered by gasoline. Accordingly, power assisted vehicles, such as those disclosed herein can be operated in bicycle lanes and legally parked on sidewalks, which is a significant advantage when compared to gasoline operated vehicles.
Referring now to
Referring now to
An important feature of the battery saddle assembly used in some embodiments of the power assisted vehicle is a quick release functionality. The battery saddle assembly is shown in a closed state in
Referring now to
As illustrated in
Referring now to
Also illustrated in
In
When battery saddle release lever 516 is lifted, saddle 502 is pushed rearward and moves the batteries with it and away from the fixed high power electrical connectors 420 (see
Another element of interest in some embodiments of the power assisted vehicle is the motor mount assembly. As illustrated in
Typical gasoline-powered cycles often integrate a center stand into the engine housing. The motor mount assembly and battery saddle assembly illustrated in the Figures above can also be used as a drop-in replacement or as a kit to convert gasoline-burning motor-assisted cycles into electric motor-assisted cycles. The specific mount geometry of the present motor mount assembly, in some embodiments, is compatible with many popular gasoline-burning mopeds.
The motor mount assembly provided herein integrates the motor with the center stand. The center stand, because of the features described above is unusually stable and allows, for example, pedaling to recharge the battery while the power assisted vehicle is stationary. Some popular electric motor-assisted cycles risk leaving the user stranded if the batteries become depleted. However the power assisted vehicle disclosed herein with the center stand structure described herein and the proper weight distribution from the battery and motor locations disclosed herein may be manually charged while the cycle is stationary. Accordingly, the user may exercise while recharging the batteries of the power assisted vehicle through pedaling.
Some embodiments of the power assisted vehicle include a protective cable housing. Electrically powered vehicles have substantially more electrical wiring when compared to gasoline or manually powered cycles. Accordingly, properly routing wiring and protecting wiring from external damage and fatigue are particularly significant in an electrically powered vehicle.
Electronic components such as headlights, instrument panels and electromechanical controls such as throttle and brake are often mounted on steering assemblies that pivot with respect to frames supporting their electric power supplies and master control units. Referring to
Referring now to
Traditional mechanical twist grip throttles such as on motorcycles function by wrapping a cable around a pulley connected to a hand grip. Twisting the hand grip pulls a central cable through a cable housing. The relative motion of the cable through the cable housing is received by components such as, for example, the carburetor of a gasoline-powered motorcycle.
Throttle assemblies for electric vehicles typically have three electrical wires extending from the housing that connect to a motor control unit. These transducers convert mechanical input from the user in such forms as thumb motion, twisting of a hand grip, or pressing a foot pedal into electrical signal. Often the user experience of such twist grips is inferior to traditional mechanical twist grips.
In some embodiments, an electromechanical throttle interface assembly 104 is mounted to the front fork steering assembly 102 as shown in
A traditional problem with electrically powered vehicles has been the required use of heavy and environmentally detrimental lead acid batteries as a source of electric power. The introduction of lithium ion batteries dramatically decreased battery weight and increased performance and reliability of most electric vehicles. However, lithium batteries require more complex and consistent cell monitoring for peak performance, efficiency and reliability.
Motorized cycles have become increasingly popular in urban settings as a mode of transportation, but the detrimental environmental impact of gasoline-burning vehicles, has led to increasing recognition of the need for environmentally-friendly vehicles. The disconnect between the energy available in battery-powered vehicles versus that of gasoline-powered vehicles and the toxicity and inefficiency of traditional lead acid batteries reduced demand for electric vehicles. The power assisted vehicles disclosed herein leverages environmentally safe lithium batteries packaged in an energy-efficient vehicle and can resolve many of the issues associated with electric vehicles.
A combination of high direct current voltage and current carrying capacity of the battery is needed to provide the electric power required by the power assisted vehicle described herein. The present battery assembly shown in
Referring now to
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The positive pole of battery brick 1014 is represented in
Access to each battery brick assembly voltage is provided by battery cell tap assembly 1018 allowing monitoring of the condition of each bank of cells. Once assembled, battery cell tap assembly 1018 is supported between the inner surface of the short length of battery enclosure bottom 1015 and the outer surface of battery enclosure end plate 1028. Battery enclosure housing 1005 protects and provides structural support for internal battery electronics.
Battery port contact spring plates 1104 are compressed between neighboring bricks 1106. Plates 1104 ensure electrical contact between cells 1108 of neighboring bricks 1106 and provide external access to monitor the voltage across each brick 1106 in brick assembly 1112 as required to optimally harness stored battery pack energy.
The rigidity of battery brick terminal plates 1102, 1116 allows for a uniform compressive force to be applied to the ends of brick assembly 1112. A single insulated battery tie rod 1110 passes through the center region of brick assembly 1112 and attaches to negative terminal plate 1102. Insulated tie rod nut 1114 mechanically couples battery brick terminal plate screw 1118 to tie rod 1110 and electrically isolates positive terminal plate 1116 from negative terminal plate 1102.
b shows a section view of battery brick 1112 in the exploded view of
Finally, it should be noted that there are alternative ways of implementing the present invention. Accordingly, the present embodiments are to be considered as illustrative and not restrictive, and the invention is not to be limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.
This application claims priority under 35 U.S.C. §119(e) from U.S. Provisional Application Ser. No. 61/606,373, filed on Mar. 3, 2012, which is hereby incorporated by reference in its entirety.
Number | Date | Country | |
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61606373 | Mar 2012 | US |