摘要:
A reciprocating compressor includes a front-side delivery chamber 18a formed at a front-side cylinder head 6, a rear-side delivery chamber 18b formed at a rear-side cylinder head 8, a plurality of delivery passages 12a and 12b formed at cylinder blocks 2 and 4 and an outlet port 16 that communicates between one of the delivery passages and an external circuit. The other delivery passage 12b that is not in communication with the outlet port 16 is made to communicate with the front-side delivery chamber 18a and the rear-side delivery chamber 18b and is also made to communicate with the delivery passage 12a in communication with the outlet port 16 via a guide passage 17. The delivery passage 12a in communication with the outlet port 16 is made to communicate with either the front-side delivery chamber or the rear-side delivery chamber via a constricted portion 40 having a passage section smaller than the passage sections at positions at which the other delivery passage 12b communicates with the delivery chambers 18a and 18b, and the dimensions of the constricted portion are set so that its area is equal to or smaller than the area of a circular section with a diameter of 1.5 mm. The reciprocating compressor adopting the structure described above makes it possible to reduce the extent of discharge pulsation and ultimately reduce vibration and noise.
摘要:
A reciprocating compressor includes a cylinder block having formed therein a plurality of cylinders, pistons that make reciprocal movement inside the cylinders, a first cylinder head fixed to one end of the cylinder block via a valve plate, a second cylinder head fixed to another end of the cylinder block via a valve plate, a first delivery chamber formed at the first cylinder head, into which a working fluid let out from a first compression space formed toward one end inside each of the cylinders is guided, a second delivery chamber formed at the second cylinder head, into which a working fluid let out from a second compression space formed toward another end inside each of the cylinders is guided, a plurality of delivery passages formed at the cylinder block and an outlet port located at the cylinder block or the cylinder head.
摘要:
A disk apparatus includes: an apparatus body including a disk drive portion for housing a disk medium having an information recording surface and for recording and/or reproducing information; and a lid body including a display for displaying information, and closed and opened with respect to the apparatus body in such a way that the display is postured face down and up. The apparatus body further includes: a drive-portion cover which is movable in a bottom direction of the apparatus body and inserts and ejects the disk medium into and from the disk drive portion; and a lock hook and a cover hook locking the disk medium housed in the apparatus body. A locking state of the lock hook and the cover hook is kept when the lid body is in the open state with respect to the apparatus body.
摘要:
A scan unit according to the present invention is a scan unit including: a reflecting portion for reflecting laser light; and an enclosure portion having a movable object enclosed within a hollow, characterized in that the movable object moves in accordance with an angular velocity of the scan unit, thereby changing a reflecting state of the reflecting portion with respect to the laser light. In one embodiment, the movable object moves in accordance with the angular velocity of the scan unit to cover at least a part of the reflecting portion. In one embodiment, the movable object moves in accordance with the angular velocity of the scan unit to deform the reflecting portion.
摘要:
A micro-mechanical structure system according to the present invention includes: a movable structure 5, at least a portion of the movable structure 5 being formed of a single-crystalline material; an elastic supporting member 10 for supporting the movable structure 5; a stationary electrode section 13, 25 at least partially opposing the movable structure 5; and a base 22 which has a circuit section and to which the stationary electrode 13, 25 is affixed. The stationary electrode section 13, 25 includes a first electrode layer (upper stationary electrode layer) 13 positioned relative to the movable structure 5 and a second electrode layer (lower stationary electrode layer) 25 positioned relative to the base 22, the first electrode layer 13 and the second electrode layer 25 being bonded to each other via adhesion layers 15 and 16.
摘要:
A micro-mechanical structure according to the present invention includes: a base 1; an elastic supporting member 5 having elasticity, the elastic supporting member 5 being formed on the base 1; and a movable section supported by the elastic supporting member 5 so as to be capable of making a relative move with respect to the base 1. This movable section includes a movable electrode 6 opposing the base 1 via a first gap, and a mirror 8 being affixed to the movable electrode 6 via a vertical rib 7.
摘要:
An objective lens driving device includes an objective lens holder 2 that holds an objective lens 1, plural elastic supporting members 6A through 6F that support the objective lens holder 2, tracking coils 4A and 4B that drive the objective lens holder 2 in the tracking direction, tilting coils 11A and 11B that tilt the objective lens holder 2 with respect to the optical axis passing through the objective lens 1, a tracking control circuit 41 that drives the tracking coils 4A and 4B, and a tilting control circuit 11 that drives the tilting coils 11A and 11B. The tilting control circuit 11 drives the tilting coils 11A and 11B using a signal yielded by multiplying a tracking driving signal from the tracking control circuit 41 by a specific scaling factor K so as to cancel out a tilting force of the objective lens holder 2 generated by the tracking coils 4A and 4B.
摘要:
A disk apparatus includes: an apparatus body including a disk drive portion for housing a disk medium having an information recording surface and for recording and/or reproducing information; and a lid body including a display for displaying information, and closed and opened with respect to the apparatus body in such a way that the display is postured face down and up. The apparatus body further includes: a drive-portion cover which is movable in a bottom direction of the apparatus body and inserts and ejects the disk medium into and from the disk drive portion; and a lock hook and a cover hook locking the disk medium housed in the apparatus body. A locking state of the lock hook and the cover hook is kept when the lid body is in the open state with respect to the apparatus body.
摘要:
A light emitting module used for an optical head having a light source and a single or plural light receiving elements and for using record or reproduce information on information recording medium includes a tabular conductive multilayer substrate; and at least a surface mount component mounted on the conductive multilayer substrate; the light emitting module includes at least the light source as the surface mount component.
摘要:
A magnetic head (4) and a magnetic head holding member (41) are cantilevered by a joint member (40). The magnetic head (4) includes a head main body (5) attached to a free end and a supporting member (6) having a supporting member elastic portion (10). The magnetic head holding member (41) has an elastic spring portion (44) near the joint member (40) and is opposed to an information recording medium (1) with the supporting member (6) interposed therebetween. The magnetic head holding member (41) includes position holding portions (48) protruding toward the information recording medium. When the magnetic head (4) is in a first position where the head main body (5) is located close to or in contact with the information recording medium (1) so as to perform recording or reproducing, the position holding portions (48) contact a cartridge holder (49). This makes it possible to reduce the thickness of a magnetic head device and a magneto-optical recording/reproducing apparatus. Further, due to the reduction of the number of components, the price of a magneto-optical recording/reproducing apparatus can be lowered further.