Bicycle telescopic apparatus

1. A bicycle telescopic apparatus, comprising:

a first tube having a receiving space;

a second tube telescopically received in the receiving space of the first tube;

a position detector configured to detect a relative position between the first tube and the second tube in a longitudinal direction of the bicycle telescopic apparatus, wherein a detecting point of the position detector is located in the receiving space of the first tube; and

an output device, including circuitry, configured to output a signal based on a detected result of the detector; wherein

the signal is configured to control a bicycle component other than the bicycle telescopic apparatus,

the position detector includes a first detector part and a second detector part,

the first detector part is located on one of the first tube and the second tube,

the second detector part is located on the other of the first tube and the second tube, and

during position detection, the first detector part or the second detector part having a shorter length in the longitudinal direction is configured to directly face the first or the second detector part having a longer length in the longitudinal direction along an entire longitudinal length of the first or the second detector part having the shorter length in the longitudinal direction and a portion of the first or the second detector part having the longer length that is aligned with the first detector part or the second detector part having the shorter length,

at least one of the first detector part and the second detector part is recessed in a groove formed in the first and the second tube, respectively, and

the at least one of the first detector part and the second detector part that is recessed in the groove formed in the first and the second tube is embedded in resin.

2. The bicycle telescopic apparatus according to claim 1 , wherein

the second tube includes a seal located on an outer surface of the second tube; and

the second detector part is located between the seal and a receiving opening of the first tube.

3. The bicycle telescopic apparatus according to claim 1 , wherein the groove is located on an inner surface of the first tube.

4. The bicycle telescopic apparatus according to claim 1 , wherein the bicycle component includes at least one of a bicycle suspension, a bicycle drive unit and a bicycle shifting device.

5. The bicycle telescopic apparatus according to claim 1 , wherein the output device is located on an end of the first tube or an end of the second tube.

6. The bicycle telescopic apparatus according to claim 1 , wherein the output device includes a wireless unit configured to wirelessly output the signal.

7. The bicycle telescopic apparatus according to claim 1 , further comprising at least one of an electrical cable port and an electrical cable, which is configured to be electrically connected to the bicycle component.

8. The bicycle telescopic apparatus according to claim 1 , further comprising a positioning structure configured to relatively position the first tube and the second tube, wherein the output device is configured to output the signal to control the positioning structure.

9. The bicycle telescopic apparatus according to claim 8 , wherein

the positioning structure includes a motor and a hydraulic unit including a valve to switch between an open state and a closed state of the hydraulic unit, and

the motor is configured to actuate the valve in accordance with the signal.

10. The bicycle telescopic apparatus according to claim 1 , wherein

the at least one of the first detector part and the second detector part that is recessed in the groove formed in the first and the second tube is embedded in the resin such that only parts making electrical contact are exposed through the resin.

11. A bicycle telescopic apparatus control system, comprising:

a controller configured to control a positioning structure to relatively position a first tube and a second tube of a bicycle telescopic apparatus in accordance with a signal, which includes information related to a relative position of the first tube and the second tube in a longitudinal direction of the bicycle telescopic apparatus, and

a position detector including a first detector part and a second detector part, wherein

the first detector part is located on one of the first tube and the second tube, and the second detector part is located on the other of the first tube and the second tube,

one of the first detector part and the second detector part has a longitudinal maximum length and a transverse maximum length that is smaller than the longitudinal maximum length,

the longitudinal maximum length is measured along the longitudinal direction of the bicycle telescopic apparatus,

the transverse maximum length is measured along a transverse direction perpendicular to the longitudinal direction,

during position detection, the first detector part or the second detector part having a shorter longitudinal maximum length is configured to directly face the first detector part or the second detector part having a longer longitudinal maximum length along an entire longitudinal length of the first or the second detector part having the shorter longitudinal maximum length and a portion of the first or the second detector part having the longer longitudinal maximum length that is aligned with the first detector part or the second detector part having the shorter longitudinal maximum length, and

at least one of the first detector part and the second detector part is recessed in a groove formed in the first and the second tube, respectively, and

the at least one of the first detector part and the second detector part that is recessed in the groove formed in the first and the second tube is embedded in resin.