Measurement apparatus and sensor apparatus

A sensor apparatus having a first sensor portion for detecting a cadence at which a pedal of a bicycle is worked and a second sensor portion for detecting a running speed of the bicycle, comprising:

• a transmit portion, having a shaft portion extending in one direction and rotatably supporting each of said first and second sensor portions for wirelessly transmitting a prescribed signal;
• said first sensor portion detecting movement of a prescribed part of a gear crank to transmit a signal indicative of the detected movement to said transmit portion electrically connected to the first sensor portion;
• and
• said second sensor portion detecting movement of a rear wheel to transmit a signal indicative of the detected movement to said transmit portion electrically connected to the second sensor portion.

A sensor apparatus having a first sensor means for detecting a cadence at which a pedal of a bicycle is worked and a second sensor means for detecting a running speed of the bicycle, said bicycle including a gear crank and a rear wheel, said sensor apparatus comprising:

• transmit means, having a shaft portion extending in one direction and rotatably supporting each of said first and second sensor means for wirelessly transmitting a prescribed signal;
• said first sensor means detecting movement of a prescribed part of the gear crank to transmit a signal indicative of the detected movement to said transmit means electrically connected to the first sensor means;
• and
• said second sensor means detecting movement of a rear wheel to transmit a signal indicative of the detected movement to said transmit means electrically connected to the second sensor means.

A measurement apparatus, comprising:

• a measurement body portion arranged at a portion where a rear wheel of a bicycle and a gear crank are positioned;
• and
• a display portion arranged at a position in a field of vision of a rider of the bicycle for displaying prescribed information based on a signal transmitted from said measurement body portion,
• said measurement body portion including
• a first sensor portion for sensing movement of a prescribed part of the gear crank to detect a cadence at which a pedal is worked,
• a second sensor portion for sensing movement of a prescribed part of the rear wheel to detect a running speed of the bicycle, and
• a transmit portion electrically connected to said first sensor portion and said second sensor portion for wirelessly transmitting signals indicative of the movement sensed by said first sensor portion and said second sensor portion to said display portion,
• said measurement body portion being secured to a chain stay connecting an axis of rotation of the rear wheel and a shaft of the gear crank,
• said measurement body portion including an abut portion provided to said transmit portion so as to conform to a shape of an outer circumference of the chain stay, a through hole provided above said abut portion in said transmit portion, and
• a belt portion for being inserted into said through hole to be coiled around the chain stay while said abut portion abuts on an outer circumferential portion of the chain stay, so as to secure said measurement body portion.