A wireless switch includes a button member, a power generation module, an RF module, and a notification unit. The button member is mounted in a housing, and is configured to move. The power generation module is configured to generate power using energy produced by the movement of the button member. The RF module is connected to the power generation module, and is configured to transmit a switch signal using power generated by the power generation module. The notification unit is configured to operate using power generated by the power generation module. The RF module controls the notification unit in one or more notification states according to a strength or details of a reception state signal corresponding to the transmitted switch signal.

A self-powered wireless switch includes at least one micro generator and a control panel for transmitting wireless control signals, the micro generator including a magnet assembly and a coil assembly being moved relatively to one another to generate an induced current within the coil assembly; the coil assembly including an iron core and a wire winding around the outside of the iron core to form a magnetic coil; the magnet assembly including a permanent magnet and magnet conductive plates arranged at two sides of the opposite magnetic poles of the permanent magnet. The self-powered wireless switch enables the magnetic assembly and the coil assembly to move relatively to one another and converts the mechanical energy to electricity, thereby achieving self-power generation and providing electricity to the control panel for transmission of wireless control signals.

A self-powered wireless switch includes at least one micro generator and a control panel for transmitting wireless control signals, the micro generator including a magnet assembly and a coil assembly being moved relatively to one another to generate an induced current within the coil assembly; the coil assembly including an iron core and a wire winding around the outside of the iron core to form a magnetic coil; the magnet assembly including a permanent magnet and magnet conductive plates arranged at two sides of the opposite magnetic poles of the permanent magnet. The self-powered wireless switch enables the magnetic assembly and the coil assembly to move relatively to one another and converts the mechanical energy to electricity, thereby achieving self-power generation and providing electricity to the control panel for transmission of wireless control signals.

Examples provide a piezoelectric energy harvester and a wireless switch including the same. The piezoelectric energy harvester includes a pressure transmission part situated between a pressing plate and a piezoelectric body, so as to transmit a uniform amount of pressure to the piezoelectric body, thereby generating a constant level of energy. In addition, a wireless switch uses energy generated in the piezoelectric energy harvester as its driving power, thereby transmitting radio frequency (RF) communications signals to an external electronic device to control the operation of the electronic device.

A bicycle operating device comprises a base member, a user interface member, an electrical switch, and a transmitting structure. The user interface member is movably mounted to the base member to move relative to the base member in a first direction. The electrical switch is mounted to the base member. The transmitting structure is provided between the user interface member and the electrical switch to transmit a first movement of the user interface member in the first direction to the electrical switch in a second direction different from the first direction.

A bicycle operating device comprises a base member, a user interface member, an electrical switch, and a transmitting structure. The user interface member is movably mounted to the base member to move relative to the base member in a first direction. The electrical switch is mounted to the base member. The transmitting structure is provided between the user interface member and the electrical switch to transmit a first movement of the user interface member in the first direction to the electrical switch in a second direction different from the first direction.

An induction generator (200; 301) having a magnet assembly (204; 304) for generating a permanent magnetic field, an annular coil (206; 306), a spring element (228; 328) and an air channel (212; 312) through which the permanent magnetic field passes, is proposed, wherein the magnet assembly (204; 304) comprises a first pole section (208; 308) and a second pole section (210; 310) and a magnet (214; 314) disposed between the first pole section (208; 308) and the second pole section (210; 310), the coil (206; 306) is connected to the spring element (228; 328) and is movably disposed in the air channel (212; 312) and the spring element (228; 328) is designed to cause an oscillation movement (224) of the coil (206; 306) in the air channel (212; 312) transverse to a magnetic flux (222; 322) of the permanent magnetic field inside the air channel (212; 312) in response to a deflection of the coil (206; 306), characterized in that the air channel (212; 312) is annular and is designed to accommodate the annular coil (206; 306) in its entire circumference.

A power generation device according to the present disclosure includes a housing, an operation unit that is movable in relation to the housing, a cantilevered vibrating body that has elasticity and is partly fixed to the housing, a piezoelectric element that is provided to the vibrating body and converts vibration energy of the vibrating body into electrical energy when the vibrating body is vibrated in a vibration direction, a slide piece that moves in conjunction with the operation unit and moves in a straight line between a first position and a second position in a sliding direction intersecting the vibration direction in relation to the housing, and a contact piece that is provided to the vibrating body, the contact piece being on a trajectory of the slide piece when the slide piece moves in the straight line, and being configured so as to be in contact with the slide piece and ride over the slide piece to thereby move in the vibration direction, when the slide piece moves from the first position to the second position.

Provided are a piezoelectric energy harvester and a wireless switch including a piezoelectric energy harvester. The piezoelectric energy harvester uses energy generated in the piezoelectric energy harvester as driving power, thereby transmitting communications signals to an external lighting device using this driving power. Furthermore, the piezoelectric energy harvester generates power having different magnitudes depending on magnitudes of external force applied to a pressing member by a user or duration of the external force. A transmitting module of the wireless switch transmits signals that may adjust intensity of light to the external lighting device depending on the magnitudes of the generated power.

Self-powered switches include a switch housing having an externally accessible user input member, a coil assembly, and a magnet arranged therein such that at least one of the coil assembly and the magnet move relative to each other responsive to movement of the user input member between first and second switch positions, and a control circuit held in the switch housing and coupled to first and second terminals of the coil assembly. The control circuit is configured to detect respective electrical characteristics of the first and second terminals of the coil assembly responsive to the movement of the user input member, and selectively transmit first and second wireless control signals to a remote receiver based on the respective electrical characteristics of the first and second terminals of the coil assembly, respectively. Related circuits and methods of operation are also discussed.