# US 11,993,344 B2 · Bicycle electric component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,993,344 B2 - Document ID: US11993344B2 - Status: Granted - Kind: B2 - Application number: 17/224,061 - Filed: 2021-04-06 - Published: 2021-07-22 - Granted: 2024-05-28 - Earliest claimed: 2017-07-31 - Assignees: Shimano Inc. - Applicants: Shimano Inc. - Inventors: Takafumi Suzuki; Takaya Masuda; Toshihiko Takahashi; Masafumi Tanaka - Web page: https://patentgrep.com/patent/US11993344B2 ## CPC - B62M 6/50: characterised by detectors or sensors, or arrangement thereof - B62J 1/08: Frames for saddles; Connections between saddle frames and seat pillars; Seat pillars (attaching seat pillars to cycle frames B62K19/36) - B62J 45/413: Rotation sensors - B62K 23/02: hand actuated (arrangements of controls on handle-bars of engine-driven cycles B62K11/14) - B62K 25/08: for front wheel - B62M 6/55: power-driven at crank shafts parts - B62M 6/90: Batteries - B62M 9/122: electrically or fluid actuated; Controls thereof - B62M 25/08: with electrical or fluid transmitting systems - G08C 17/02: using a radio link - B62J 45/00: Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for - B62J 2001/085: {Seat pillars having mechanisms to vary seat height, independently of the cycle frame} - B62K 2025/045: {Suspensions with ride-height adjustment} - B62K 2025/047: {with suspension locking means} - B62K 2025/048: {with suspension manual adjustment details} - B62M: RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR {SINGLE-TRACK} CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES (arrangements or mounting of transmissions in vehicles in general B60K; transmission elements per se F16) - B62J: CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS - B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE - G08C: TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G) ## Abstract A bicycle electric component comprises a wireless communicator, a casing, and an electromagnetic shield. The wireless communicator is configured to receive a wireless signal. The casing has an internal space. The wireless communicator is disposed in the internal space of the casing. The electromagnetic shield includes a shield member to cover at least a part of the wireless communicator. The shield member of the electromagnetic shield is a separate member with respect to the casing. ## Claims ### Claim 1 A bicycle electric component, comprising: a wireless communicator configured to receive a wireless signal; a casing having an inner shield member and an opening leading to an interior of the inner shield member, the wireless communicator is disposed in the interior of the inner shield member; an electromagnetic shield including a shield member to cover at least a part of the wireless communicator, the shield member of the electromagnetic shield being a separate member with respect to the casing, the shield member being rotatable around a rotational axis with respect to the casing to cover the opening and the at least a part of the wireless communicator; and at least one of a power source, a controller, and a detector being disposed in the casing and outside of the interior of the inner shield member. ### Claim 2 (depends on 1) The bicycle component according to claim 1, wherein the casing includes a first connecting member, and the electromagnetic shield includes a second connecting member to detachably connect the shield member to the first connecting member. ### Claim 3 (depends on 1) The bicycle electric component according to claim 1, further comprising: the detector to detect an operational state of a bicycle; and a shield actuator to move the shield member in response to the operational state of the bicycle. ### Claim 4 (depends on 3) The bicycle component according to claim 3, wherein the casing includes a third connecting member, and the electromagnetic shield includes a fourth connecting member to movably connect the shield member to the third connecting member. ### Claim 5 (depends on 3) The bicycle electric component according to claim 3, wherein the shield actuator is configured to move the shield member to uncover at least a part of the wireless communicator in a state where the detector detects the operational state of the bicycle. ### Claim 6 (depends on 5) The bicycle electric component according to claim 5, wherein the shield actuator is configured to move the shield member to cover the at least a part of the wireless communicator in a state where the detector has not detected the operational state of the bicycle for a third threshold time period. ### Claim 7 (depends on 6) The bicycle electric component according to claim 6, wherein the shield actuator is configured to move the shield member to cover the at least a part of the wireless communicator in a state where the wireless communicator has not received the wireless signal for a fourth threshold time period. ### Claim 8 (depends on 1) The bicycle component according to claim 1, wherein the shield member is rotatably coupled to the casing around the rotational axis. ### Claim 9 (depends on 1) The bicycle component according to claim 1, wherein the shield member is made of soft magnetic material to block radio signals, and the inner shield member is made of soft magnetic material to block radio signals. ### Claim 10 A bicycle electric component, comprising: a detector to detect an operational state of a bicycle; and a wireless communicator configured to receive a wireless signal, the wireless communicator including a sensitivity changer to change a sensitivity of the wireless communicator, the sensitivity changer increasing the sensitivity of the wireless communicator in a state where the detector detects the operational state of the bicycle, wherein the wireless communicator includes a receiving circuit and an antenna, and the sensitivity changer includes a plurality of paths and an electrical switch to electrically connect the receiving circuit to the antenna via one of a first path and a second path, the first path having a gain larger than a gain of the second path, the gain of the second path being non-zero. ### Claim 11 (depends on 10) The bicycle electric component according to claim 10, wherein the first path has a gain larger than a gain of the second path, and the sensitivity changer is configured to switch the electrical switch to electrically connect the receiving circuit to the antenna via the second path to decrease a gain in a state where the detector has not detected the operational state of the bicycle for a seventh threshold time period. ### Claim 12 (depends on 10) The bicycle electric component according to claim 10, wherein the first path has a gain larger than a gain of the second path, and the sensitivity changer is configured to switch the electrical switch to electrically connect the receiving circuit to the antenna via the second path to decrease a gain in a state where the wireless communicator has not received the wireless signal for an eighth threshold time period. ### Claim 13 (depends on 10) The bicycle electric component according to claim 10, wherein the first path includes a first fixed gain amplifier and a second fixed gain amplifier, and the electrical switch electrically connects the receiving circuit to the antenna via one of the first fixed gain amplifier and the second fixed gain amplifier. ### Claim 14 (depends on 10) The bicycle electric component according to claim 10, wherein the sensitivity changer is configured to switch the electrical switch to electrically connect the receiving circuit to the antenna via either one of the first path and the second path. ### Claim 15 A bicycle electric component comprising: a detector to detect an operational state of a bicycle; and a wireless communicator configured to receive a wireless signal, the wireless communicator including a sensitivity changer to change a sensitivity of the wireless communicator, the sensitivity changer increasing the sensitivity of the wireless communicator in a state where the detector detects the operational state of the bicycle, wherein the wireless communicator includes a receiving circuit and an antenna, and the sensitivity changer includes a plurality of band pass filters and an electrical switch to electrically connect the receiving circuit to the antenna via one of the plurality of band pass filters, the plurality of band pass filters includes a first band pass filter and a second band pass filter, the wireless signals pass through the first band pass filter, the wireless signals do not pass through the second band pass filter, and the sensitivity changer is configured to switch the electrical switch to electrically connect the receiving circuit to the antenna via the second band pass filter to block the wireless signal in a state where the wireless communicator has not received the wireless signal for a tenth threshold time period. ### Claim 16 A bicycle electric component, comprising: a detector to detect an operational state of a bicycle; and a wireless communicator configured to receive a wireless signal, the wireless communicator including a sensitivity changer to change a sensitivity of the wireless communicator, the sensitivity changer increasing the sensitivity of the wireless communicator in a state where the detector detects the operational state of the bicycle, wherein the wireless communicator includes a receiving circuit and an antenna, and the sensitivity changer includes a plurality of band pass filters and an electrical switch to electrically connect the receiving circuit to the antenna via one of the plurality of band pass filters, the plurality of band pass filters includes a first band pass filter and a second band pass filter, the wireless signals pass through the first band pass filter, the wireless signals do not pass through the second band pass filter, and the sensitivity changer is configured to switch the electrical switch to electrically connect the receiving circuit to the antenna via the second band pass filter to block the wireless signal in a state where the detector has not detected the operational state of the bicycle for a ninth threshold time period. ### Claim 17 A bicycle electric component, comprising: a wireless communicator configured to receive a wireless signal; a controller electrically connected to the wireless communicator; a casing having an inner shield member, the wireless communicator and the controller are disposed in the casing, the wireless communicator is disposed in an interior of the inner shield member, a portion of the inner shield member being disposed between the wireless communicator and the controller; and an electromagnetic shield including a shield member to cover at least a part of the wireless communicator in a closed state, the shield member of the electromagnetic shield being a separate member with respect to the casing, the shield member being disposed in the internal space. ### Claim 18 (depends on 17) The bicycle electric component according to claim 17, wherein the casing has an opening leading to the internal space, and the shield member is rotatable around a rotational axis with respect to the casing to cover the opening and the at least a part of the wireless communicator so as to uncover the controller. ### Claim 19 (depends on 17) The bicycle component according to claim 17, wherein the inner shield member surrounds the wireless communicator. ### Claim 20 (depends on 17) The bicycle component according to claim 17, wherein the shield member is made of soft magnetic material to block radio signals, and the inner shield member is made of soft magnetic material to block radio signals.