摘要:
In a starter, an electromagnetic switch is mounted to a seating. A lead wire of an exciting coil is led to an outside of a switch case by a coil-leading portion and is connected to a male terminal, which is fixed to the coil-leading portion by welding. The coil-leading portion is integrally provided with an end plate portion of a bobbin around which the exciting coil is wound. The coil-leading portion passes through and projects from a bottom surface of the switch case to the outside. A metal member, in a form of a plate, is insert-molded in the seating. A 50 terminal is provided on an end of the metal member and a female terminal is provided on an opposite end of the metal member. When the electromagnetic switch is mounted to a predetermined position of the seating, the female terminal engages with the male terminal.
摘要:
The present invention relates to a starter for an engine, capable of driving the engine at a high torque at the beginning of the starting and of driving it in a high-rotation condition at the end of the starting. An inner circumferential tapered portion of a movable cam plate is pressed against an outer circumferential portion of an outer cam of a clutch so that the outer cam and an internal gear are integrated to rotate at the same speed. Thus, on the epicycle reduction principle, in an epicycle reduction gear device, a sun gear, a planetary gear and an arm portion enter an identical-rotation condition, that is, a reduction ratio 1 condition. Moreover, an outer circumferential tapered portion of the movable cam plate is pressed against a tapered portion of a housing so that the internal gear is placed into a fixed, non-rotatable condition, thereby providing an ordinary epicycle reduction to produce a high reduction ratio.
摘要:
A starter for automotive internal combustion engines is provided which includes a starter output shaft with a pinion which establishes engagement with a ring gear of the engine and a spline tube. The starter output shaft is disposed within the spline tube in splined engagement therewith. The spline tube is supported firmly by a housing through at least two bearings, thereby avoiding precession or wrenching of a pinion-mounted portion of the starter output shaft projecting from the housing about an outside one of the bearings.
摘要:
A rotary electric machine such as a vehicle AC generator includes a multi-phase armature winding, a stator core, a rotor including a magmoroc field coil and a plurality of poles, an unbalance detecting coil, and a comparator circuit for comparing an output signal of the unbalance detecting circuit with a threshold value. If the AC generator fails, a voltage induced in the unbalanced detecting coil becomes larger than the threshold value, and an alarm is be outputted.
摘要:
An armature composed of a shaft and an armature core is rotatably supported in a housing of a rotary electric machine. The shaft is forcibly inserted into a center hole of the armature core formed by laminating core sheets. Each core sheet has a center hole and outer holes connected to the center hole. A contour of the center hole is not continuous because the outer holes are connected thereto. The shaft can be firmly connected to the laminated core sheets with a relatively low inserting force. The shaft has a smooth outer surface having no knurls or the like. In addition, the outer holes of the laminated core sheets form cooling air passages in the armature core in its axial direction.
摘要:
A starter for an internal combustion engine has a resistance ratio rM/rB equal to or less than 0.4, when rM represents a motor internal resistance and rB represents a battery internal resistance. Furthermore, the starter has a size ratio L/D equal to or less than 1.0, when L represents an axial length of the armature and D represents an outer diameter of the armature. Furthermore, a means for suppressing temperature rise is provided for the starter.
摘要:
A rotor of a rotary electric machine such as a starter motor for cranking an internal combustion engine is substantially composed of an armature core fixed to a rotating shaft and an armature coil disposed in slots of the armature core. The armature coil is constituted by electrically connecting conductor segments. A rear end portion of each conductor segment disposed in the radial outside of the slot is bent and arranged on an axial rear surface of the armature core, thereby forming a commutator surface. The thickness of the rear end portion in the axial direction gradually increases from its radial outside toward its radial inside, and the cross-sectional area of the rear end portion is made uniform throughout its entire length.
摘要:
A starter includes an electric motor, a pinion gear driven by the electric motor and a magnetic switch having a plunger driven by a magnetic coil. Electric power to be fed to both the electric motor and the magnetic coil is supplied from an on-board battery through a single common input terminal of the starter. The magnetic switch is composed of a main switch through which a full power is supplied to the electric motor and an auxiliary switch through which a limited power is supplied. Upon closing the auxiliary switch, the motor is driven at a low speed and the pinion gear is engaged with a ring gear of the engine. Then, the main switch is closed to thereby crank up the engine with a full power.
摘要:
In a rotor of a rotary electric machine, a rotor core is formed by helically winding a material sheet. The material sheet forms teeth on a first side of a middle connecting portion and projections projecting from a second side of the connecting portion in a direction opposite to the teeth. The material sheet is one of a pair of material sheets formed in a single base sheet in a form of belt. In the base sheet, the material sheets are arranged such that the projections are intermeshed with each other. The material sheet is helically wound such that the projections are located at an inner diameter side of the rotor core.
摘要:
An electromagnetic switch includes a contact holding member connected to a plunger in order to hold a first movable contact. The contact holding member is disposed outside a switch case covering a periphery of an excitation coil. A return spring pushes the plunger back in the opposite direction to a fixed iron core through the contact holding member when electric power supply to the excitation coil is stopped. The return spring is disposed outside the switch case. In this structure, a spring holding portion does not need to be disposed in the fixed iron core and the plunger. Therefore, an area where the fixed iron core attracts the plunger can be increased, so that an attraction force can be increased.