摘要:
A brushless motor improving the structure for connecting the stator coil to the substrate to facilitate the operation of connection and assembling. The constitution comprises a rotor having a rotor magnet (11), a stator core (2) on which the stator coil (7) is wound to be opposed to the rotor magnet (11), a circuit substrate (4) connected to the stator coil (7), and an insulating core holder (3) which holds a terminal to which the coil will be connected and which mounts the stator core (2), the core holder (3) being placed on said circuit substrate (4) and said terminal being soldered to terminal portions on the circuit substrate (4).
摘要:
According to the present invention, an armature core comprises a core element made of a magnetic material, said core element having a annular portion; a plurality of salient poles radially formed on said core element; a plurality of rib portions formed on said salient poles, respectively, coils wound around said rib portions; and an insulating layer formed on surface of said core element, said insulating layer being provided with an area where surface of said core element excludes said insulating layer.
摘要:
An improvement of a structure for treating end parts of windings wound around the salient poles of the stator core of an electric rotating machine fitted with a core. Without using protruding parts such as terminals and hooks, windings around the salient poles and wirings to a circuit board are possible. Thereby, the thickness of a stator is reduced, and the processes from the winding one to the wiring one are automated. As a result, the cost can be reduced. The stator has an insulating core holder (131) mounted on the ring part of a stator core (13) which has a plurality of radially projecting salient poles (132, ..., 132). The core holder (131) is provided with holding parts (133b) for holding the front and tail ends of wirings (15) wound around the salient poles (132). Parts (15a) of the front and tail ends of the windings (15) connected with terminal parts are exposed. Further, the core holder (131) is provided with connected parts (133a) for storing solder used to join by soldering the exposed front and tail ends of the windings (15) to the corresponding terminal parts, e.g., solder lands of a circuit board. Thereby, the front and tail ends of the windings (15) are directly joined by soldering to the solder lands of the circuit board, while being held by the core holder (131), in a state where it does not protrude in the direction of stacking the stators.
摘要:
A disk holding device contains a turn table for holding a disk having a disk center hole in the center thereof on the turn table; a disk mount member disposed on the center portion of the turn table and fitted with the center hole of the disk; an operation member mounted to freely move in a disk loading and unloading direction; an engagement member disposed to freely move in the radial direction of the disk mount member, the engagement member being brought into contact with the disk center hole when the disk is fitted into the disk mount member; urging device for urging the engagement member in the radial direction of the disk mount member; and urging force releasing device for releasing an urging force applied to the engagement device by the urging device in accordance with the movement of the operation member.
摘要:
A damper including a motor, a reduction gear train rotatably coupled with the motor, reducing rotation of the motor and transmitting the reduced rotation of the motor to a baffle, a rack meshing with a last-stage gear of the reduction gear train and engaged with the baffle at an eccentric position relative to a pivot of the baffle, and the baffle receiving reciprocation of the rack at the eccentric position relative to the pivot of the baffle and reciprocating about the pivot of said baffle so as to open and close.
摘要:
A block unit (1) for a block toy contains a block body (1) having protrusions (3) and recesses through which the block body is freely connectable to other block units; a rotary shaft (2) rotatably supported in the block body (1) in such a manner that the rotary shaft (2) is extended in a block coupling direction in which the block unit is coupled to other block units through the protrusions and recesses thereof; and rotation transmitting means (2d,2m) for transmitting the rotation of the rotary shaft to other block bodies coupled to the block unit body, the rotation transmitting means provided at the ends of the rotary shaft, the rotation transmitting means being freely connectable to rotation transmitting means of other block units.
摘要:
A motor control apparatus comprises a first pulse multiplier circuit for multiplying command pulses by a first factor, encoder circuit for detecting a position of a motor-driven object, a second pulse multiplier circuit for multiplying a detection pulse from the encoder circuit by a second factor, a deviation counter circuit for detecting a difference between output pulses of the first and second multipliers, a divider circuit for dividing an output signal of the deviation counter by the second factor, and driving source driven by the control apparatus in accordance with an output of the divider.
摘要:
A helical scan-type magnetic recording and reproducing apparatus adapted to VTR or DAT. This apparatus includes a head scanning mechanism which helically scans the tape (3) that runs in parallel with a reference plane using a head (4) that turns in a slit (5) that meets aslantly with the drum shaft (6) between the upper and lower fixed drums (2) and (1) arranged perpendicularly with respect to the reference plane. This mechanism consists of a rotary member (30) in concentric with the upper and lower fixed drums (2) and (1), a linear guide (10) or (31) provided for the rotary member (30) to slide in a direction in parallel with the center of rotation of the rotary member near the head, a head (4) provided for the linear guide (10) or (31), and a cam mechanism (16) or (32) which gives axial displacement to the head (4) in the same direction as the slit (5) relative to the stationary cylindrical members (1), (2), (40). The head (4) is turned by the rotary member (3) and is, at the same time, linearly moved back and forth in the direction of the width of tape smoothly and stably.
摘要:
Improvements in the vertical magnetic recording/reproducing head of the type in which a main magnetic pole and an auxiliary magnetic pole are arranged as a unitary structure on one side of a magnetic recording medium. Problems are solved in relation to false pulses in the output signals and change in the level, contributing to improving the sensitivity for recording and reproduction. The magnetic head is used for vertical VTR's. The vertical magnetic recording/reproducing head of the invention comprises a support block which consists of a main magnetic pole, a nonmagnetic block which holds said main magnetic pole to form a surface opposed to the magnetic recording medium, and an auxiliary magnetic pole block which supports part of said main magnetic pole and which supports said nonmagnetic block; and a magnetic block provided on the side surface of said support block in the direction of track width. The region opposed to the magnetic recording medium is constituted by the main magnetic pole, nonmagnetic block and magnetic block.