1. A valve comprising:
a cylinder in which a working fluid flows;
a disk rotatably disposed within the cylinder and configured to control a flow path;
a shaft configured to transmit power to the disk;
a gear box connected to the shaft; and
a connector configured to connect the gear box and the cylinder and includes a drain aperture through which the working fluid leaked from the cylinder is discharged.
2. The valve according to claim 1, wherein a hollow aperture into which the shaft is rotatably inserted is formed on the connector and the drain aperture connects to the hollow aperture.
3. The valve according to claim 2, further comprising:
a sealing member disposed within the connector and configured to maintain the seal between the shaft and the hollow aperture.
4. The valve according to claim 3, wherein the sealing member is a plurality of sealing members and the drain aperture is formed between the plurality of sealing members within the connector.
5. The valve according to claim 1, further comprising:
a controller disposed within the gear box and configured to operate the gear box.
6. The valve according to claim 1, wherein the cylinder is disposed within an air supply system of a fuel cell and the working fluid is air.
7. The valve according to claim 6, wherein the cylinder is disposed at a rear end of a stack of the fuel cell wherein dried air flows at a front end of the stack of the fuel cell and increased temperature and increased humidity air flows at the rear end.
8. A valve comprising:
a cylinder in which a working fluid flows;
a disk rotatably disposed within the cylinder and configured to control a flow path;
a shaft configured to transmit power to the disk;
a gear box connected to the shaft and configured to adjust a rotational angle of the shaft;
a first sealing member that encloses the shaft and disposed between the disk and the gear box;
a second sealing member disposed between the first sealing member and the gear box; and
a connector configured to accommodate the first and second sealing members and the cylinder and includes a drain aperture connected to the exterior between the first and second sealing members.
9. A vehicle having a fuel cell system comprising the valve of claim 1.
10. A vehicle having a fuel cell system comprising the valve of claim 8.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A sheet feeder comprising:
a sheet feed roller to covey a sheet provided at a position of the upstream side of an aligning roller along the sheet conveying direction;
the aligning roller starts to rotate when a sheet is conveyed;
a clutch to transmit and cut off the driving force from a driving source to rotate the feed roller;
a rotary shaft connected to the clutch in the rotatable state;
an inertial member provided to the rotary shaft; and
a torque limiter comprising an inner ring fixed to the rotary shaft and an outer ring fixed to the inertia member,
the clutch having further a function to disengage after transmitting the driving force from the driving source to the inertial member by engaging first at the time when feeding sheets and to make a second engagement successively, and
a controller that controls the engagement of the clutch at a time T1, when the driving force is transmitted to the rotary shaft causing the sheet feed roller to rotate, disengagement of the clutch at a time T2, when the driving force is transmitted to the inertial member at specified time after the aligning roller is turned on causing specified flexion on the sheet, and the second engagement of the clutch at a time T4, while the inertial member is continuously rotating.
2. The sheet feeder according to claim 1, wherein the inertial member is rotating after disengaging the clutch until making the second engaging.
3. The sheet feeder according to claim 1, wherein the inertial member includes a flywheel.
4. An image forming apparatus, comprising:
an image carrying body;
a developing unit to form a developer image on the image carrying body;
a transferring unit to transfer the developer image onto a sheet from the image carrying body; and
a sheet feeder to feed the sheet to the transferring unit, wherein the sheet feeder including:
a sheet feed roller provided at a position of the upstream side of an aligning roller along the sheet conveying direction;
the aligning roller starts to rotate when a sheet is conveyed;
a clutch to transmit and cut off the driving force from a driving source to rotate the feed roller;
a rotary shaft connected to the clutch in the freely rotatable state; an inertial member provided to the rotary shaft;
a torque limiter comprising an inner ring fixed to the rotary shaft and an outer ring fixed to the inertial member,
the clutch functions to disengage after transmitting the driving force from the driving source to the inertial member by engaging first at the time when feeding sheets and to make a second engagement successively; and
a controller that controls the engagement of the clutch at a time T1, when the driving force is transmitted to the rotary shaft causing the sheet feed roller to rotate, disengagement of the clutch at a time T2, when the driving force is transmitted to the inertial member at specified time after the aligning roller is turned on causing specified flexion on the sheet, and the second engagement of the clutch at a time T4, while the inertial member is continuously rotating.
5. The apparatus according to claim 4, wherein the inertial member is rotating after disengaging the clutch until making the second engaging.
6. The apparatus according to claim 4, wherein the inertial member includes a flywheel.
7. A control method of a sheet feeder including a sheet feed roller provided at a position of the upstream side of an aligning roller along the sheet conveying direction, a driving source to rotate the sheet feed roller, a clutch to transmit and cut off the driving force from the diving source, a rotary shaft connected to the clutch and provided in the rotatable state, an inertial member provided to the rotary shaft, a torque limiter comprising an inner ring fixed to the rotary shaft and an outer ring fixed to the inertial member, the clutch being disengaged after transmitting the driving force from the driving source to the inertial member by the first clutch engagement at the time of sheet feeding and make a second engagement of the clutch, successively, comprising:
transmitting a driving force to the rotary shaft causing the sheet feed roller to rotate and making a first clutch engagement at the time of sheet feeding,
disengagement of the clutch at a time T2, when the driving force is transmitted to the inertial member at specified time after the aligning roller is turned on causing specified flexion on the sheet, and
making the second engagement of the clutch at a time T4, while the inertial member is continuously rotating.
8. The method according to claim 7, wherein the inertial member is rotating after completing the clutch disengaging until the second clutch engagement is started.
9. A control method of an image forming apparatus comprising: forming a developer on an image carrying body, transferring the developer image onto a sheet from the carrying body at a transferring unit feeding the sheet from a sheet feeder including a sheet feed roller provided at a position of the upstream side of an aligning roller along the sheet conveying direction, a driving source to rotate the sheet feed roller, a clutch to transmit and cut off the driving force from the diving source, a rotary shaft connected to the clutch and provided in the rotatable state, an inertial member provided to the rotary shaft, a torque limiter comprising an inner ring fixed to the rotary shaft and an outer ring fixed to the inertial member, the clutch being disengaged after transmitting the driving force from the driving source to the inertial member by the first clutch engagement at the time of sheet feeding and make a second engagement of the clutch, successively, comprising:
transmitting a driving force to the rotary shaft causing the sheet feed roller to rotate and making a first clutch engagement at the time of sheet feeding,
disengagement of the clutch at a time T2, when the driving force is transmitted to the inertial member at specified time after the aligning roller is turned on causing specified flexion on the sheet, and
making the second engagement of the clutch at a time T4, while the inertial member is continuously rotating.
10. The method according to claim 9, wherein the inertial member is rotating after completing the clutch disengaging until the second clutch engagement is started.