With the advent of advances in rechargeable energy storage systems (RESS) and electric motor technologies combined with society's desire to replace internal combustion vehicles more environmentally conscious alternatives, electric vehicles are being considered for all types of wheeled transportation. Motorcycles comprise the largest number of powered vehicles in the world, however electric powered bicycles are a rapidly growing segment as well. Electric bicycles may provide an affordable and environmentally friendly option for urban commuting.
This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. The Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
According to one aspect of this disclosure may relate to an electric saddle type vehicle that includes a chassis having a forward end and a rear end opposite the forward end, where the chassis includes: (a) a first side frame member extending from the forward end to the rear end, where the first side frame member includes a first portion of a seat support tower, and a first frame extension member at the rear end of the chassis; and (b) a second side frame member extending from the forward end to the rear end, where the second side frame member includes a second portion of the seat support tower. The first side frame member and the second side frame member may be joined together to form a battery compartment, a storage compartment, and the seat support tower. In addition, a steering stem may be attached near the forward end of the chassis, where handlebars are attached to the steering stem; and a rear wheel may be attached to the rear end of the chassis. The rear wheel maybe connected to an electric hub motor. The first side frame member may be a unitary single member, and similarly, the second side frame member may be a unitary single member. The first side frame member and the second side frame member may each be formed from a magnesium alloy. Additionally, the first side frame member and the second side frame member may form a majority of exterior surfaces of the chassis. Steering mount supports may be secured in between the first side frame member and the second side frame member when the first side frame member and the second side frame member are connected together, where the steering mount supports receive the steering stem. The battery compartment may be accessed through a battery compartment opening on an upper surface of the chassis. A storage compartment may be accessed through a storage compartment opening on an upper surface of the chassis. A battery or rechargeable energy storage system may be mounted in the battery compartment by installing the rechargeable energy storage system through the battery compartment opening, and a battery compartment cover may be secured over the battery compartment opening. In some examples, a spacer may be attached to the battery or rechargeable energy system prior to the battery being installed into the battery compartment. The forward end of the chassis may include a forward recess formed from the first side frame member and the second side frame member, wherein the forward recess is forward of the steering stem. A removable headlight and speaker module may be received in the forward recess. The seat support tower receives a first insert to provide a bicycle type seat for a pedaled configuration, and the seat support tower receives a second insert to provide a motorcycle seat for a non-pedaled configuration. As another option, the wiring and the brake lines may be routed from the handlebars to the steering stem, where the wiring and the brake lines exit the steering stem through an opening in the steering stem into a channel arranged in an internal cavity of the chassis. A handlebar cover may be mounted over the handlebars to protect the wiring and the brake lines attached to the handlebars.
Other aspects of this disclosure may relate to an electric saddle type vehicle that has a chassis having a forward end and a rear end opposite the forward end, where the rear end of the chassis extends aft of a seat. The chassis may be configured to support a pedaled configuration and a non-pedaled configuration of the electric saddle type vehicle. The chassis may include: (a) a first side frame member extending from the forward end to the rear end, where the first side frame member includes a first portion of a seat support mounting area and a first frame extension member, and (b) a second side frame member extending from the forward end to the rear end, where the first side frame member includes a second portion of the seat support mounting area. The first side frame member and the second side frame member may connect together to form a battery compartment, a storage compartment, and the seat support mounting area, and a steering stem may be attached near the forward end of the chassis. The first frame extension member may be releasably attached to the first side frame member, where the first frame extension member connects to an electric hub motor and a rear wheel. A frame extension member cover may connect to the first frame extension member and cover a recess on an inward facing surface of the frame extension member. When the chassis is configured in the pedaled configuration, a cartridge containing a pedal shaft and bearings may be connected to the chassis, where the cartridge may include a concentrically mounted electric motor. Alternatively, when the chassis is configured in the non-pedaled configuration, footboards may be connected to the chassis. The seat may be supported by a seat support tower that is releasably connected to the chassis at the seat support mounting area, where the seat support tower may be formed from a first seat support tower member and a second seat support tower member. In addition, the seat support tower is different for the pedaled configuration than the non-pedaled configuration.
The present invention is illustrated by way of example and not limited in the accompanying figures in which like reference numerals indicate similar elements and in which:
In the following description of various example structures according to the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example devices, systems, and environments in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, example devices, systems, and environments may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Also, while the terms “top,” “bottom,” “front,” “back,” “side,” “rear,” and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein as a matter of convenience, e.g., based on the example orientations shown in the figures or the orientation during typical use. Additionally, the term “plurality,” as used herein, indicates any number greater than one, either disjunctively or conjunctively, as necessary, up to an infinite number. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of this invention. Also, the reader is advised that the attached drawings are not necessarily drawn to scale.
In general, aspects of this invention relate to an electric saddle type vehicle 10 that has a unique monocoque chassis 42 that supports the vehicle 10, while also providing substantial volume for an RESS or battery and storage. This monocoque type of chassis 42 design attains strength and stiffness through an optimized chassis shape around a hollow interior. The chassis 42 may be constructed primarily from two halves comprising a left side frame member 42A and a right side frame member 42B. Each side frame member 42A, 42B may include structural ribbing on the inside of each of them while maintaining a relative thin wall structure, where the majority of the wall thickness of each side frame member 42A, 42B may be within a range of 2 mm and 4 mm to minimize the overall weight and cost of the vehicle 10. The chassis 42 may secure single or multiple batteries (RESS) as well as different electric motors. The chassis 42 may support a single seat vehicle with a pedaled configuration and also can be used for a vehicle with footpegs or footboards in place of the pedals in a non-pedaled configuration. The chassis 42 may also secure a steering mount support(s) 52 between the side frame members 42A, 42B, such that these high stress areas may be of a higher strength material than the material forming the side frame members 42A, 42B. For example, the side frame members 42A, 42B may be formed from a magnesium alloy, aluminum alloy, titanium alloy, carbon fiber construction, or other polymeric material, while the steering mount supports 52 may be formed from a steel alloy. Because of the unitary construction of the side frame members 42A, 42B, the chassis 42 may be about 20 percent of the overall weight of the vehicle 10, or within a range of 15 percent and 25 percent of the overall weight of the vehicle 10.
The vehicle 10 may include a rear wheel hub motor 20 or a belt or chain drive motor and transmission if desired for the pedaled configuration to form an electric assisted pedal vehicle as known to one skilled in the art. In some examples, the chassis 42 may have a single sided frame extension member 41B that may be formed integrally with the first side frame member 42B that goes back along only one side of the rear wheel 18. The electric motor stator may be mounted to the rear of the frame extension member 41B, as may be the rear axle on which the rear wheel 18 and electric motor 20 rotate. In the case of a pedaled configuration, the rear hub motor 20 may have has provisions for a pedal driven rear sprocket to drive the rear wheel 18 either in fixed gear or with a transmission inside the rear wheel hub. In some examples, an additional frame extension member 41A, which may be integrally formed or removably attached to second side frame member 42A to provide for additional strength and stiffness in higher powered versions or vehicles subjected to rough use. When only one frame extension member is used, a frame extension cover 44 may mount to an inward facing surface of either or both frame extension members 41A, 41B and may also cover a recess or opening on the inward facing surface of the respective frame extension member 41A, 41B.
The chassis 42 may be modular and act as a frame for either a pedaled configuration or non-pedaled configuration of the electric saddle type vehicle. Each side frame member 42A, 42B may be configured such that when joined together form an opening to receive a have an opening to receive a pedal assembly 62 that has a crank arm 61 and pedals 23. The chassis 42 may also provide locations to connect all necessary component for a pedal assist electric vehicle 10 such as a forward sprocket 63, chain or belt 64, and a rear sprocket 65. The pedal assembly 62 may also include a cartridge with concentrically mounted electric motor and bearings to provide the power to the rear wheels through the chain 64. To have a common frame for the pedaled and non-pedal driven configuration, the pedal assembly 62 and bearings may be removed as a cartridge and the chassis 42 may have mounts to removably attach foot boards 22 and foot board plates 46 to cover the openings in the chassis 42 that receive the pedal assembly 62 when in the non-pedaled configuration.
In addition, when the side frame members 42A, 42B are joined to form the chassis 42, the chassis 42 may include a generally hollow interior such that the outer walls of the frame members carry the primary loads of the vehicle 10. As part of the hollow interior, the chassis 42 may include a battery compartment 150 and a storage compartment 151. Each side frame member 42A, 42B may include portions of wall members to form keep the storage compartment separate from the battery compartment. The battery compartment 150 may be located aft of and in some examples adjacent to the storage compartment 151. The storage compartment 151 may be located aft of the steering column 60. The battery compartment 150 may be accessed through a battery compartment opening 153 on an upper surface of the chassis 42. A battery compartment door 50 may be rotatably attached to the chassis 42 to cover the battery compartment 150 and provide selective access to the battery 110 or RESS when needed. Similarly the storage compartment 151 may be accessed through a storage compartment opening 154 on an upper surface of the chassis 42. A storage compartment door 51 may be rotatably attached to the chassis 42 may act to cover the storage compartment 151 and provide selective access to the storage compartment 151 when needed. The storage compartment door 51 may have a locking mechanism and in some examples, may be removable. Low voltage electric connections 152 for convenience, such as USB ports may be mounted inside the storage compartment 151.
To power the electric motor 20, a battery 110 or RESS may be mounted in the battery compartment 150 by installing the RESS 110 through the battery compartment opening 153 as shown in
As discussed above, the battery compartment 150 allows the use of several different battery capacities. The batteries 110 may generally have a rectangular shape with longest measurement being vertical that allows these batteries to be loaded into the compartment 150 through opening 153 on top of the frame 42. The battery compartment door 50 may be a locking mechanism to prevent unauthorized access and may be a completely removable cover or a rotatably attached door 50. Each battery 110 may have a handle 101 on top to allow a user to easily lift the battery 110 for re-charge or exchange. When more than one battery 110 is installed, such as the example in
The chassis 42 may also provide a conduit or channel 181 to allow the wiring 140 and brake lines to be routed from the handlebars 43 to the hollow steering stem 60, where the wiring 140 and brake lines to exit the steering stem 60 through an opening in the steering stem 60 into an internal cavity of the chassis 42. Specific shaping of ribs inside the frame 42 may help to route wires 140 to minimize chafing. A handlebar cover 93 may be mounted over the handlebars 43 to protect the wiring 140 and the brake lines attached to the handlebars 43 to organize and protect wires and hoses from outside accidental damage or vandalism. The handlebars may also include a visual display 92 to convey information to the rider 67.
The seat support tower 34 may also be formed when the two side frame members 42A, 42B are joined. The seat support tower 34 may support the seat 17 and in some examples, may receive a first insert to provide a bicycle type seat 17 for a pedaled configuration as shown in
As another feature, a removable headlight and speaker module 12 may be received in the forward recess 28 of the chassis 42. The removable headlight and speaker module 12 may include a plurality of speakers 24 along with a forward facing light source 25 and a separate battery (not shown) to power the module 12 when disconnected from the vehicle. The module 12 may also include a wireless receiver and transmitter, such as Bluetooth or similar means, to communicate with a handheld device or other transmitting device, such as a smartphone, to allow a user to play music through the speakers. In addition, when the vehicle 10 is moving or in operation, the speakers 24 may act as a horn or provide an audible tone or warning noise to as a safety feature to allow pedestrians or others to hear the vehicle 10 as it approaches, since the silence of electric vehicles can sometimes be hazardous in busy urban areas. In addition, the module may include a housing 30 and a connector to releasably connect to the electrical system of the vehicle 10. The light sources 25 may include multiple LED light sources.
While the invention has been described with respect to specific examples including presently preferred modes of carrying out the invention, those skilled in the art will appreciate that there are numerous variations and permutations of the above described systems and methods. Thus, the spirit and scope of the invention should be construed broadly as set forth in the appended claims.
This application claims priority to U.S. Provisional Patent Application No. 62/863,078 filed on Jun. 18, 2019. The above referenced application is incorporated by reference in its entirety.
Number | Date | Country | |
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62863078 | Jun 2019 | US |