摘要:
An improved compact automobile fan unit of the type including a turbofan fixedly mounted on the drive shaft of a motor and having a plurality of backwardly curved blades, and a generally cup-shaped housing having intake openings in its end wall and discharge openings in its side wall and secured to a yoke of the motor for containing therein the turbofan, wherein the backwardly curved blades are circumferentially spaced at different angular intervals and the turbofan has a center of gravity located at an axis of the drive shaft. With the blades thus arranged, the fan unit is capable of operating at high speeds with large capacity without generating unpleasant noise.
摘要:
A totally-enclosed traction motor for electric railcar including, a frame structure of totally-enclosed cylindrical shape which is provided with a window, a rotor shaft rotatably supported to the frame structure coaxially with the frame structure, a rotor of cylindrical shape coaxially fixed to the rotor shaft which is rotated with the rotor shaft as one body, a stator of cylindrical shape fixed to an inner surface of the frame structure coaxially with the rotor shaft with keeping a gap between an inner surface of the stator and an outer surface of the rotor, and a cooling body mounted to the frame structure so as to cover the window and provided with a plurality of heat absorbing fins fixed to the cooling body from the inside and a plurality of radiation fins fixed to the cooling body from the outside.
摘要:
A composition comprising at least one high Tg amorphous resin with a fibrous filler shows improved melt processability. Addition of a sulfonate salt to the compositions gives increased melt flow as well as enhanced flame retardancy in a composition which is substantially free of bromine and chlorine.
摘要:
Problem To offer a suitable polyether imide resin composition for the plastic components for automobiles, domestic appliances or OA apparatus, equipment's for media where heat resistance, dimensional stability and fire retardancy is required. Means for solving the problem Filler reinforced polyether imide resin composition is characterized by containing (A) polyether imide resin, (B) thermoplastic resin, (C) fibrous reinforced filler and (D) Non-fibrous inorganic filler, wherein the amount of (A) polyether imide resin is 1 to 95% by weight, (B) thermoplastic resin: 1 to 95% by weight, (C) fibrous reinforced filler: 2 to 80% by weight, (D) Non-fibrous inorganic filler: 2 to 80% by weight, when total of (A) to (D) is 100% by weight. The filler reinforced polyether imide resin composition contains (A) polyether imide resin, (B) thermoplastic resin, (C) fibrous reinforced filler, (D) Non-fibrous inorganic filler and (E) alkali earth metal salts, wherein the amount of (A) polyether imide resin: 1 to 95% by weight, (B) thermoplastic resin: 1 to 95% by weight, (C) fibrous type reinforced filler: 2 to 80% by weight, (E) non-fibrous inorganic filler. 2 to 80% by weight, when total of (A) to (D) is 100% by weight, and (E) alkali earth metal salts are included in the amount of 0 to less than 5 parts by weight.
摘要:
The invention relates to a totally enclosed type driving electric motor in which a stator core having a coil is attached to an inner peripheral portion of a frame, a bearing bracket supporting a bearing is attached to one end of the frame, a housing supporting a bearing is attached to another end of the frame, and a shaft of a rotor is rotatably supported by the first bearing and the second bearing. The totally enclosed type driving electric motor of the invention is provided with a cooling space near at least one of the first bearing and the second bearing.
摘要:
A brushless motor includes a rotor having permanent magnets and a coil for rotating the rotor. In the motor, a switching element is connected between the coil and a power source, a magnetic sensor is provided for detecting the position of one of the permanent magnets of the rotor to control the switching operation of the switching element, and a delay circuit is provided for delaying a signal from the magnetic sensor and then applying the delayed signal to the switching element.With this arrangement, the apparent hysteresis width of the magnetic sensor can be broadened and the prior art problem is avoided wherein variations in the hysteresis width of the magnetic sensor results in disabled rotation of the rotor.
摘要:
The present invention provides a graphic balancer comprising, in units of bands, level adjusting means (operational amplifiers 1L and 1R, resonators 2L and 2R, and volume controls 3L and 3R) for increasing a level of a sound signal of one of two stereo channels which are divided into a plurality of bands while synchronously decreasing a level of the other, so that localization of a sound image can be shifted in individual bands. As one embodiment of the present invention, a graphic balancer in which a graphic balancer and a graphic equalizer can be switched is disclosed.
摘要:
Problem To offer a suitable polyether imide resin composition for the plastic components for automobiles, domestic appliances or OA apparatus, equipment's for media where heat resistance, dimensional stability and fire retardancy is required. Means for solving the problem Filler reinforced polyether imide resin composition is characterized by containing (A) polyether imide resin, (B) thermoplastic resin, (C) fibrous reinforced filler and (D) Non-fibrous inorganic filler, wherein the amount of (A) polyether imide resin is 1 to 95% by weight, (B) thermoplastic resin: 1 to 95% by weight, (C) fibrous reinforced filler: 2 to 80% by weight, (D) Non-fibrous inorganic filler: 2 to 80% by weight, when total of (A) to (D) is 100% by weight. The filler reinforced polyether imide resin composition contains (A) polyether imide resin, (B) thermoplastic resin, (C) fibrous reinforced filler, (D) Non-fibrous inorganic filler and (E) alkali earth metal salts, wherein the amount of (A) polyether imide resin: 1 to 95% by weight, (B) thermoplastic resin: 1 to 95% by weight, (C) fibrous type reinforced filler: 2 to 80% by weight, (E) non-fibrous inorganic filler. 2 to 80% by weight, when total of (A) to (D) is 100% by weight, and (E) alkali earth metal salts are included in the amount of 0 to less than 5 parts by weight.
摘要:
A brushless motor is provided with a rigid resin member that faces one end of the drive shaft with a predetermined gap therebetween. The rigid member is positioned to be struck by the end of the drive shaft when the drive shaft vibrates. The impact of the collision is absorbed by the elastic deformation of a resilient member that supports the rigid member. This prevents noise from being generated by vibrations of the drive shaft.
摘要:
In a vacuum contact printer there are provided a winding roller to which one end of a resilient vacuum sheet is attached and a pressure roller for pressing the sheet against a glass plate. Along with the advancement of both rollers, which are rotatably supported on a pair of bearing plates movable in a longitudinal direction, the sheet automatically spreads over the glass plate, being wound off the winding roller and simultaneously being pressed by the pressure roller so that all the air kept between the sheet and the glass plate is completely expelled. In addition, a suctorial operation encourages a closer adhesion of the sheet to the glass plate, whereby a document and a sensitive material placed between them can be sufficiently in close contact with each other. On the other hand, along with the retraction of both rollers, the sheet is automatically and perfectly wound up around the winding roller without any slack or rumple caused thereon, since the pressure roller is raised slightly above the sheet by means of cam plates so as to put no pressure on the sheet.