The present application discloses systems and methods to present information to recreational vehicle riders and to provide customizable visual information to recreational vehicle riders. The present application further discloses systems and methods to connect and transmit audio information between a driver portable communication device and a driver audio interface device through the recreational vehicle and audio information between a passenger portable communication device and a passenger audio interface device.

A batteryless electric bicycle based operation method, computer program, and system are disclosed. The system includes a server device, at least one electricity-connecting detection device mounted on the electric bicycle, and at least one mobile electric power computation device carriable by a user, and application steps include the electricity-connecting detection device of the electric bicycle detecting the mobile electric power computation device forming electric connection therewith; registration data of the mobile electric power computation device and the electricity-connecting detection device being transmitted to the server device for authentication; the mobile electric power computation device being notified upon successful authentication to supply electricity to the electric bicycle to be used thereby; the electricity-connecting detection device detecting at least one operation parameter of the electric bicycle; transmitting the operation parameter to the server device and the mobile electric power computation device; and applying the operation parameter to accomplish an operation task.

A bicycle handlebar includes a handlebar body and a recessed structure. The handlebar body has an outer surface. The recessed structure is recessed from the outer surface of the handlebar body, and has a mounting surface that is indented from the outer surface of the handlebar body and that is adapted for a control device to be mounted thereto.

A suspension assembly for a cycle includes a link and an indicator having a central opening. The indicator includes a first retention feature. A pivot assembly is disposed in the link. The pivot assembly includes a second retention feature. The first retention feature and the second retention feature cooperate to axially retain the indicator on the pivot assembly while allowing rotational movement between the indicator and the pivot assembly when a force threshold is exceeded.

A communication unit. The communication unit has an electromagnetic transmitter and/or receiver device and a fastening device for the electromagnetic transmitter and/or receiver device for fastening to a component, preferably to a drive unit and/or a frame, of a vehicle, preferably of a single-track vehicle such as an electric bicycle, including an in particular flat, essentially rectangular carrier, especially having two essentially oppositely situated sides on which the transmitter and/or receiver device is situated, at least a first holding element, the first holding element being designed to fasten the carrier to the component, the first holding element being made of metal, and the first holding element covering at least 50% of an in particular essentially rectangular side of the carrier that faces the component in a fastened state of the carrier.

A communication unit having an electromagnetic transmitter and/or receiver unit and a fastening device for an electromagnetic transmitter and/or receiver device for fastening to a component, preferably to a drive unit and/or a frame, preferably of a single-track vehicle such as an electric bicycle. The communication unit including an in particular flat, essentially rectangular carrier, especially having two essentially oppositely situated sides on which the transmitter and/or receiver device is situated; at least one first holding element, the first holding element being designed to fasten the carrier to the component in a positionally stable manner.

An electronic device can be mounted at least partly in a frame of a bicycle and used to monitor operations or properties of the bicycle or one or more components associated with the bicycle. The electronic device may integrate and communicate with a variety of components including sensors to facilitate customization of monitoring by the electronic device. The electronic device can have a relatively minimalist design. The electronic device, in some embodiments, may include a display that does not present alphanumeric characters to an operator, and the display may instead include multiple indicators that individually or in combination present information to the operator, such as the level of charge of one or more batteries or an operating mode of the electronic device or bicycle.

A stem for a bicycle comprises a body (14), an electrical device such as a power storage means (20), and a connecting means (24, 26). The body (14) has first and second apertures therein. The electrical device is located within the body. The connecting means enables electrical connection through the at least one first aperture, to enable supply of power to the device. The second aperture enables insertion of the device into the body and removal therefrom. A handlebar can be attached to the stem over the second aperture.

The present disclosure provides an electric vehicle. The electric vehicle includes: a handlebar, and an electric vehicle state indicator lamp, wherein the electric vehicle state indicator lamp is located on the handlebar of the electric vehicle, or on an upper portion of a handlebar stem of the electric vehicle, and the electric vehicle state indicator lamp is configured to indicate different vehicle states of the electric vehicle by using different display manners of the electric vehicle state indicator lamp. By adopting the above technical solution, the problem that information on various vehicle states of the electric vehicle only can be known via an instrument screen, causing a high cost and affect a visual effect and the like in the related art is solved.

When an information terminal device having a GPS function, a communication function, and the like is coupled to a bicycle, a body, or another object to be fixed or supported, the degree of freedom of a coupling mechanism is enhanced to reduce design limitation, and user-friendliness and operability are improved.

A coupling mechanism for coupling an information terminal device 100 to an object includes a main body-side coupling portion 11 formed in a main body of the information terminal device 100 and an object-side coupling portion 12 disposed on the object side and coupled to the main body-side coupling portion 11. The object-side coupling portion 12 includes engagement portions 12a and 12b engaged with the main body-side coupling portion 11, and a plurality of types of function adding units 0 for exchangeably adding a function to the information terminal device 100 via the engagement portions 12a and 12b.