摘要:
A fuel pressure adjusting apparatus which includes a casing which includes a fuel introduction port, and a fuel discharge port; and a cylindrical member which is housed in the casing, and which includes a valve seat at an end portion thereof, and a communication passage therein, the communication passage connecting the fuel introduction port to the fuel discharge port; a valve element which is provided on a fuel discharge port-side of the valve element in the casing, and which closes the communication passage when the valve element is seated on the valve seat; and a leaf spring which is provided at the fuel discharge port, and which applies force to the valve element in a direction toward the valve seat. The leaf spring includes a concave portion which supports the valve element, and which is formed such that there is a gap between the concave portion and the valve element.
摘要:
A work hardening treatment which decreases the Young's modulus, and an age hardening treatment which recovers or increases the Young's modulus decreased by the work hardening treatment are performed to form a vibrating portion, thereby attaining a vibrating element (30) advantageous in downsizing while ensuring desired fatigue characteristics and vibration characteristics. This downsizes, for example, an actuator device (1), an optical scanning device, a video projection apparatus, and an image forming apparatus.
摘要:
A fuel pressure adjusting apparatus which includes a casing which includes a fuel introduction port, and a fuel discharge port; and a cylindrical member which is housed in the casing, and which includes a valve seat at an end portion thereof, and a communication passage therein, the communication passage connecting the fuel introduction port to the fuel discharge port; a valve element which is provided on a fuel discharge port-side of the valve element in the casing, and which closes the communication passage when the valve element is seated on the valve seat; and a leaf spring which is provided at the fuel discharge port, and which applies force to the valve element in a direction toward the valve seat. The leaf spring includes a concave portion which supports the valve element, and which is formed such that there is a gap between the concave portion and the valve element.
摘要:
An electronic component has an insert member embedded in a resin portion by an insert molding method, with a part of the insert member exposed at an outer surface of the resin portion. At least a part of the exposed portion of the insert member is depressed relative to the outer surface of the resin portion.
摘要:
A liquid crystal device is constituted by a pair of substrates each provided with an electrode, and a chiral smectic liquid crystal composition disposed between the substrates. At least one of the substrates is provided with an alignment control film of a polyimide represented by the following formula (I): ##STR1## in which A denotes a planar tetravalent organic residue group; B denotes a divalent group represented by --CR.sub.1 (R.sub.2)-- where R.sub.1 and R.sub.2 independently denote H or alkyl group; a, b and c are independently 0 or 1; x and y are independently an integer of at least 0 and x+y=at least 1; and n is an integer of at least 2.
摘要翻译:液晶装置由分别设置有电极的一对基板和设置在基板之间的手性近晶液晶组合物构成。 至少一个基板设置有由下式(I)表示的聚酰亚胺的取向控制膜:其中A表示平面四价有机残基; B表示由-CR1(R2)表示的二价基团,其中R1和R2独立地表示H或烷基; a,b和c独立地为0或1; x和y独立地为至少为0且x + y =至少为1的整数; n为2以上的整数。
摘要:
A fuel pump is driven by a variable, constant current, control circuit. A pressure control valve disposed between the fuel pump and a fuel rail includes a downstream pressure control valve and a bypass valve bypassing the downstream pressure control valve. The downstream pressure control valve sets the fuel pressure in the fuel rail to a predetermined value by opening or closing a passage from a fuel pipe to the fuel rail. If the fuel pump discharge pressure is sufficiently increased, the bypass valve is opened when the upstream fuel pressure is larger than the downstream fuel pressure by at least a predetermined differential pressure. In this way, fuel is supplied to raise the fuel rail fuel pressure. Therefore, it is possible during other times to reduce the consumed electric power of the fuel pump and thus prolong its life.
摘要:
A throttle valve control system of engine having an ultrasonic motor for driving a throttle valve fixed to a rotary shaft and positioned in a throttle body forming a suction passage. The throttle valve control system comprises a stator mounted on one side of the throttle body and provided with an elastic member having a plurality of piezoelectric elements and a travelling wave generator surface respectively disposed on the elastic member, and a rotor positioned at the outside of the stator and fixed to an extension of the rotary shaft whereby said rotor being rotatable by receiving the travelling wave generated by the travelling wave generator surface.
摘要:
A flux-cored wire electrode suitable for use in gas-shielded arc-welding, characterized in that the sum of the carbon content in the sheath made of soft steel and the carbon content in a lubricant adhered on the sheath is 0.045 wt. % or lower relative to the total weight of the sheath and a flux, which contains 20-50 wt. % of TiO.sub.2, 1-15 wt. % of SiO.sub.2, 2.5-10 wt. % of ZrO.sub.2, 0.1-5 wt. % of an arc-stabilizing agent, 10-45 wt. % of a deoxidizer and up to 50 wt. % of iron powder, all based on the total weight of the flux, is filled to an amount of 10-30 wt. % of the total weight of the wire electrode in the cavity surrounded by the sheath. The above flux-cored wire electrode features a low fume emission rate comparable with that of a solid wire electrode.
摘要:
The oscillation element according to the present invention includes a torsion bar mounted on a base, and an oscillating member having a light reflection surface for reflecting light from a light source, which is fixed on the torsion bar protruding from the base. The oscillating member oscillates about a longitudinal axis of the torsion bar with an elastic deformation of the torsion bar, thereby deflecting the light that reflects at the light reflection surface in a direction intersecting the longitudinal axis. The oscillating member has two plates that are joined together so as to sandwich the torsion bar. On joining surfaces of the plates are provided with grooves for receiving the torsion bar, respectively. The plates have a symmetrical shape that the longitudinal axis serves as the axis of symmetry.
摘要:
The present invention provides a connector configured to electrically connect two connection objects. The connector comprises an elastic member having a surface and a conductive film placed on the surface of the elastic member. The conductive film comprises two contact portions to be brought into contact with the connection objects, respectively, and a connect portion connecting the contact portions. Each of the contact portions comprises projections and a drainage arranged, at least in part, between the projections.