1. A head slider which has a head part and which performs at least one of recording and reproducing by the head part in a state in which the head slider floats over a recording medium, which comprising:
a first air bearing part which is disposed on an air inflow end side on a base surface;
a second air bearing part which is disposed closer to an air outflow end side than the first air bearing part on the base surface and which has the head part and has an area smaller than that of the first air bearing part;
a pair of positive pressure generating parts which is disposed on both sides of a center axis of the head slider in the longitudinal direction closer to the air outflow end side than a step part formed between the first air bearing part and the base surface on the air inflow end side;
a side rail parts which are disposed between the first air bearing part and one positive pressure generating part of the pair of positive pressure generating parts, and between the first air bearing part and the other positive pressure generating part of the pair of positive pressure generating parts; and
an outside side rail parts which are disposed outside the pair of positive pressure generating parts with respect to the center axis of the head slider in the longitudinal direction.
2. The head slider of claim 1, further comprising:
a first step part which is disposed between the base surface and the first air bearing part; and
a second step part which is disposed between the base surface and the second air bearing part.
3. The head slider of claim 1, wherein a negative pressure generating part is provided in an area surrounded by the first air bearing part, the second air bearing part, and the side rail parts.
4. The head slider of claim 1, wherein the first air bearing part, the second air bearing part, the side rail parts, the outside side rail parts and the pair of positive pressure generating parts are formed at the same height from the base surface.
5. The head slider of claim 2, wherein the first step part and the second step part are formed at the same height from the base surface.
6. The head slider of claim 1, wherein distance D1 in the longitudinal direction from the air inflow end of the head slider to a border part of the pair of positive pressure generating parts on the air inflow end side satisfies a relationship below where a length of the head slider in the longitudinal direction is DT:
0.47\u2266(D1DT)\u22660.66
7. The head slider of claim 6, wherein distance D2 in the longitudinal direction from the air inflow end of the head slider to the step part of the first air bearing part satisfies a relationship below where a length of the head slider in the longitudinal direction is DT:
0.18\u2266(D2DT)\u22660.35
8. A head support unit comprising:
the head slider of claim 1; and
a suspension which applies a predetermined thrusting force with respect to the head slider from a side opposite to a side on which the first air bearing part and the second air bearing part are disposed on the base surface.
9. The head support unit of claim 8, wherein the suspension has a pivot part which applies the predetermined thrusting force with respect to the head slider.
10. A disk drive apparatus comprising:
the head support unit of claim 8;
a disk-shaped recording medium;
a drive part which rotates and drives the disk-shaped recording medium;
a rotating part which rotates the suspension of the head support unit in a radial direction of the disk-shaped recording medium; and
a control part which controls the rotation and drive of the drive part and the rotation of the rotating part.
11. The disk drive apparatus of claim 10,
wherein the suspension of the head support unit has a pivot part which applies a predetermined thrusting force with respect to the head slider;
wherein when a position at which the pivot part is abutted against the head slider is set to a pivot position, the position of the center of gravity and the pivot position of the head slider projected onto the disk-shaped recording medium are matched with each other.
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 transport for material picking up and placing configured to cooperate with a mechanical arm to pick up and place rubber plugs comprising:
a housing having:
a first receiving cavity,
a first tracheal joint and a second tracheal joint coupled to the first receiving cavity and an air supply;
a piston assembly slidably received in the first receiving cavity and having a channel, wherein one end of the channel is coupled to the second tracheal joint and another end of the channel is placed through the piston assembly;
a pickup assembly having:
a guide base configured to be coupled to the housing and define a second receiving cavity which is configured to be coupled to the first receiving cavity,
a pickup member having:
a connecting portion configured to be received in the second receiving cavity and hermetically sealed to piston assembly,
an ejection portion configured to be inserted in the connecting portion and define an air vent coupled to the channel;
wherein the piston assembly moves in the first receiving cavity and the second receiving cavity when air is supplied through the first tracheal joint, and the ejection portion reaches outside of the second receiving cavity such that the ejection portion is capable of inserting into the rubber plug, and the channel further creates a negative pressure when air is extracted through the second tracheal joint, such that the ejection portion is capable of steadily holding the rubber plug and the rubber plug is thus capable of being picked up;
wherein the ejection portion retracts into the guide base when air is extracted through the first tracheal joint, and the guide base resists against the rubber plug, such that the rubber plug is ejected outside of the second receiving cavity, and the channel further creates a positive pressure when air is supplied through the second tracheal joint, and the positive pressure is capable of allowing the ejection portion to release the rubber plug and place the rubber plug.
2. The transport as claimed in claim 1, wherein:
the housing comprises a first housing and a second housing;
one end of the first housing couples to the second housing, and the other end of the first housing couples to the mechanical arm;
the first housing defines a first blind vent adjacent to the second housing; and
the second housing defines a first through vent, and the first through vent couples to the first blind vent to form the first receiving cavity.
3. The transport as claimed in claim 2, wherein:
the guide base is coupled to one end of the second housing away from the first housing; and
the first tracheal joint is coupled to the first housing, and the second tracheal joint is coupled to the second housing.
4. The transport as claimed in claim 2, wherein:
the piston assembly comprises a first piston assembly and a second piston assembly coupled to the first piston assembly; and
the first piston assembly is received in the first blind vent, and the second piston assembly is received in the first through vent.
5. The transport as claimed in claim 4, wherein:
the first blind vent is step-shaped, and comprises a first receiving vent away from the second housing, and a second receiving vent adjacent to the second housing; and
a size of the first receiving vent is smaller than a size of the second receiving vent.
6. The transport as claimed in claim 5, wherein:
the first piston assembly comprises a first main body, and a first flange coupled to one end of the first main body;
the first main body is slidably received in the first receiving vent, and the first flange is received in the second receiving vent; and
the first flange defines a second blind vent away from one end of the first main body along an axial direction, and defines a groove along a radial direction.
7. The transport as claimed in claim 6, wherein a plurality of sealing members are arranged to the first main body, the sealing members seal the first main body and an inner wall of the first housing.
8. The transport as claimed in claim 6, wherein the first through vent is step-shaped, and comprises a third receiving vent coupled to the second receiving vent, and a fourth receiving vent away from the second receiving vent, and a size of the fourth receiving vent is smaller than a size of the third receiving vent.
9. The transport as claimed in claim 8, wherein:
the second piston assembly comprises a second flange, and a second main body formed from one side of the second flange; and
the second flange is slidably received in the third receiving vent and is coupled to the first flange, and the second main body is slidably received in the fourth receiving vent.
10. The transport as claimed in claim 9, wherein a plurality of sealing members are arranged to the second main body, the sealing members seal the second main body and an inner wall of the second housing.
11. The transport as claimed in claim 9, wherein the second piston assembly further comprises a stepped vent, and the stepped vent couples to the second blind vent and the groove to form the channel.
12. The transport as claimed in claim 11, wherein the stepped vent comprises a fifth receiving vent coupled to the second blind vent, and a sixth receiving vent away from the second blind vent, a size of the sixth receiving vent is smaller than a size of the fifth receiving vent.
13. The transport as claimed in claim 12, wherein:
the pickup assembly further comprises a sealing base;
the sealing base comprises a third main body hermetically received in the fifth receiving vent and an extending portion received in the sixth receiving vent; and
the pickup member is mounted to the extending portion.
14. The transport as claimed in claim 13, wherein:
the sealing base defines a second through vent, and the second through vent couples with the second blind vent and the groove; and
the connecting portion is arranged to the extending portion, and defines a screw thread to hermetically seal to the inside wall of the second main body.
15. The transport as claimed in claim 12, wherein:
the pickup assembly further comprises an elastic member received in the second receiving cavity, the elastic member is arranged to the pickup member; and
one end of the elastic member resists against the guide base, and the other end of the elastic member resists against the second main body.