Abstract: After a second plate member 3 is inserted into a space which is surrounded by side walls 6a through 6d of a first plate member 2, the bonded surface 3a of the second plate member 3 is bonded and fixed to the bonded surface 2a of the first plate member 2 by an adhesive to form a sample handling unit 1. At this time, the second plate member 3 is positioned by protrusions 35 and 36 of the first plate member 2 in X and Y directions, and positioned and fixed by holding members 8 through 13 and inside holding members 26 and 27 in Z directions (normal directions on an external surface 7). A microfluidic device 101 includes microchips 106 through 108 of plural kinds having passages 132 through 134 for transporting a sample, and a base member 102 on which the microchips 106 through 108 are arranged.

Abstract: After a second plate member 3 is inserted into a space which is surrounded by side walls 6a through 6d of a first plate member 2, the bonded surface 3a of the second plate member 3 is bonded and fixed to the bonded surface 2a of the first plate member 2 by an adhesive to form a sample handling unit 1. At this time, the second plate member 3 is positioned by protrusions 35 and 36 of the first plate member 2 in X and Y directions, and positioned and fixed by holding members 8 through 13 and inside holding members 26 and 27 in Z directions (normal directions on an external surface 7). A microfluidic device 101 includes microchips 106 through 108 of plural kinds having passages 132 through 134 for transporting a sample, and a base member 102 on which the microchips 106 through 108 are arranged.

Abstract: After a second plate member 3 is inserted into a space which is surrounded by side walls 6a through 6d of a first plate member 2, the bonded surface 3a of the second plate member 3 is bonded and fixed to the bonded surface 2a of the first plate member 2 by an adhesive to form a sample handling unit 1. At this time, the second plate member 3 is positioned by protrusions 35 and 36 of the first plate member 2 in X and Y directions, and positioned and fixed by holding members 8 through 13 and inside holding members 26 and 27 in Z directions (normal directions on an external surface 7). A microfluidic device 101 includes microchips 106 through 108 of plural kinds having passages 132 through 134 for transporting a sample, and a base member 102 on which the microchips 106 through 108 are arranged.

Abstract: A gear made of a resin includes a substantially cylindrical rim having a plurality of teeth formed around an outer periphery thereof, a boss formed about a rotational center of the rim, and a web connecting the boss and the rim to each other. At least one groove is defined along outer surface of each tooth to divide the tooth in a widthwise direction of the tooth. As a result, a portion of the gear, in which the grooves are defined, is deformed in a reduced amount, leading to a reduced amount of deformation such as a warpage or sink in the entire gear, thereby providing an enhancement in tooth flank accuracy. Since the grooves are defined along the outer surfaces of the teeth, a lubricant such as grease can be supplied effectively to tooth flanks by previously applying the lubricant in the grooves.

Abstract: After a second plate member 3 is inserted into a space which is surrounded by side walls 6a through 6d of a first plate member 2, the bonded surface 3a of the second plate member 3 is bonded and fixed to the bonded surface 2a of the first plate member 2 by an adhesive to form a sample handling unit 1. At this time, the second plate member 3 is positioned by protrusions 35 and 36 of the first plate member 2 in X and Y directions, and positioned and fixed by holding members 8 through 13 and inside holding members 26 and 27 in Z directions (normal directions on an external surface 7). A microfluidic device 101 includes microchips 106 through 108 of plural kinds having passages 132 through 134 for transporting a sample, and a base member 102 on which the microchips 106 through 108 are arranged.

Abstract: Each of a sliding bearing and a rotating and sliding member according to the present invention includes an irregularity portion on its inner peripheral surface. The irregularity portion comprises projections adapted to come into contact with a rotary shaft, and recesses which are provided, so that they cannot be brought into contact with the rotary shaft to define gaps or spaces between the bearing itself and the rotary shaft. The irregularity portion is integrally formed-on the inner peripheral surface of the sliding bearing to extend in a direction of rotation of the sliding bearing, in such a manner that the recess is disposed at a central portion of the inner peripheral surface, and the projections are disposed on opposite sides of the recess.

Abstract: A gear made of a resin includes a substantially cylindrical rim having a plurality of teeth formed around an outer periphery thereof, a boss formed about a rotational center of the rim, and a web connecting the boss and the rim to each other. At least one groove is defined along outer surface of each tooth to divide the tooth in a widthwise direction of the tooth. As a result, a portion of the gear, in which the grooves are defined, is deformed in a reduced amount, leading to a reduced amount of deformation such as a warpage or sink in the entire gear, thereby providing an enhancement in tooth flank accuracy. Since the grooves are defined along the outer surfaces of the teeth, a lubricant such as grease can be supplied effectively to tooth flanks by previously applying the lubricant in the grooves.

Abstract: A highly durable, inexpensive valve seat and valve unit are achieved by using a synthetic resin for forming the valve seat. The synthetic resin valve seat is equipped with a first valve aperture and a second valve aperture for inflow, and a third valve aperture for outflow. At least either the first valve aperture or the second valve aperture is set in communication with the third valve aperture through a communication hole of a movable valve seat, or the first and second valve apertures are closed by the movable valve seat. A protuberance that slidably contacts the movable valve seat is formed on a surface of the synthetic resin valve seat that opposes the movable valve seat and on the opening edges of at least the first valve aperture and the second valve aperture such that the protuberance surrounds the first valve aperture and the second valve aperture.

Abstract: A highly durable, inexpensive valve seat and valve unit are achieved by using a synthetic resin for forming the valve seat. The synthetic resin valve seat is equipped with a first valve aperture and a second valve aperture for inflow, and a third valve aperture for outflow. At least either the first valve aperture or the second valve aperture is set in communication with the third valve aperture through a communication hole of a movable valve seat, or the first and second valve apertures are closed by the movable valve seat. A protuberance that slidably contacts the movable valve seat is formed on a surface of the synthetic resin valve seat that opposes the movable valve seat and on the opening edges of at least the first valve aperture and the second valve aperture such that the protuberance surrounds the first valve aperture and the second valve aperture.

Abstract: According to the invention, when a plurality of radial ribs are formed integrally with the web of a spur gear for the sake of rigidity thereof, the same rigidity as that of heretofore known gears can be assured while increasing the size accuracy of gear in comparison with the usual gears by locating the ribs with outer ends thereof opposed to the base of corresponding teeth.