Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Hayato Yamauchi

Keiichi Kusumoto

Motoaki Kimura

Haruki Nakayama

Toru Nagai

Yoshihiro Nishikawa

Yasuyuki Yamane

Shuzo Isozumi

Kyohei Yamamoto

Naohito Kaneda

Katsunori Yagi

A motor; an electromagnetic switch which; a clutch; and a shift lever which is configured by a pair of lever bodies that are arranged so that one side is engaged with a plunger and the other side is engaged with the clutch, and are provided. A passing through hole is formed at each end portion on the other side of the lever bodies; and an annular plate, which is arranged at an engaging portion of the clutch and on the inside of the other side of the lever bodies and has a convex shaped engaging portion to be passed through the passing through hole, is provided.

Starter

An electric relay can easily conform to a specification change so as to improve layouting and at the same time to avoid an increase in cost. An electric relay () is composed of a relay main body (), which is provided with caps () which is formed of a non-conductive member, and in the interior of which an electrical contact and an exciting coil are arranged, and a connector (), which is provided with a terminal connection part () and a bush () which are integrally molded with a non-conductive member (), wherein the terminal connection part () and the bush () of the connector () are mounted on an exciting terminal () and a main terminal () of the relay main body ().

Electric relay

There is provided an electromagnetic switch, for a starter, that is capable of preventing a defect caused by the formation of a leakage circuit between the battery terminal and the motor terminal, even in the case where the electromagnetic switch is flooded with water. On the outer surface of a switch cap, there is provided a diaphragm disposed between the battery terminal and the motor terminal that are arranged in such a way as to be exposed outside the switch cap; the diaphragm is formed in such a way that a wall face thereof that faces one terminal, out of the battery terminal and the motor terminal, which is disposed upper than the other terminal has a protrusive shape.

Electromagnetic switch for starter

A starter for an internal combustion engine has no radial protrusion of an auxiliary switch in a shape projected along an axial direction thereof, thus improving the degree of freedom in mounting the starter on the engine. An axially extending electromagnetic switch is mounted on a motor for turning it on and off. An auxiliary switch extends in an axial direction of the motor and is mounted thereon for operating the electromagnetic switch by means of an operation of a key switch. A pinion gear can be placed into or out of engagement with a ring gear of the engine so as to be driven by the motor. The motor has a bracket with a radially extending flange, through which the starter is mounted on the engine. The auxiliary switch is arranged at an inner side of a common tangent line between outer peripheries of the electromagnetic switch and the flange.

Starter for internal combustion engine

Provided is a starter that can ensure stable insulation and exhibits excellent leakage resistance. The starter includes: a starting motor realized with a dc motor that has a commutator, positive brushes which are disposed around the commutator to abut on the commutator and connected to an external power supply, negative brushes, which are opposed to the positive brushes, stored in a bracket bearing one end of a rotation shaft; and a starting switch that is mounted on the starting motor and electrically connects or disconnects the external power supply to or from the positive brushes. When an engine is started, the starting motor is driven with the external power supply via the starting switch, and the starting motor is mechanically coupled to the engine. Herein, the starting motor has an insulating member disposed only on the internal surface of the bracket neighboring the positive brushes.

A starter includes a starter motor, a main circuit section, a main switch section including a main contact section to cut a current, a main plunger driven to open and close the main contact section, suction and holding coils, battery and motor terminals, and a switch terminal connected to the battery through a start switch, and opening and closing the main contact section in accordance with movement of the main plunger, a suction circuit section connected in parallel with the main circuit section and connected in series with the suction coil, a holding circuit section connected in series with the holding coil, and a breaking section connected in series with the suction coil inside the suction circuit section. The breaking section cuts electricity conduction when electricity is continuously conducted to the suction coil to bring about layer short circuit and a short circuit current flows at the suction circuit section.

Provided is a starter which reliably cuts off any abnormal current caused to flow through the motor and which can reduce the possibility of current cutoff in the case of normal supply current. According to the present invention, a starter includes: a motor having a field coil; and an electromagnetic switch for supplying an electric current from a battery to the motor to start an engine through a pinion gear, in which: a metal conductor is connected to an upstream side of the field coil to which the electric current is supplied; and the metal conductor has a narrowed portion endowed with a fuse function and having a small sectional area.

A pinion slip-off preventive structure of a starting apparatus is provided in which a bearing applied to a snap ringcan be decreased to make the snap ringless prone to being worn out and damaged, thus preventing the snap ringfrom slipping off from a pinion shaft. The pinion slip-off preventive structure includes a projected portionextending from an end face of the pinion shaftin an axial direction thereof and having a grooveformed on a smooth surface thereof in a circumferential direction thereof, the snap ringfitted in the groove, and a stopperhaving an abutting surfacein abutting engagement with an end face of the pinionand an engaging portionengaged with the snap ring

Pinion slip-off preventive structure of starting apparatus

An electromagnetic starter switch in which a voltage from a power source is depressed by a resistor and applied to a motor by an auxiliary movable contact coming into contact with a first auxiliary fixed contact and a second auxiliary fixed contact before a pinion gear intermeshes with a ring gear, and the voltage from the power source is subsequently applied to the motor without modification by the main movable contact also coming into contact with a first main fixed contact and a second main fixed contact after the pinion gear intermeshes with the ring gear, wherein: the first main fixed contact, the second main fixed contact, the first auxiliary fixed contact, and the second auxiliary fixed contact are disposed on a main switch cover.

Electromagnetic starter switch

An electromagnetic starter switch in which a voltage from a power source is depressed by a resistor and applied to a motor by an auxiliary movable contact coming into contact with a first auxiliary fixed contact and a second auxiliary fixed contact before a pinion intermeshes with a ring gear, and the voltage from the power source is subsequently applied to the motor without modification by the main movable contact also coming into contact with a first main fixed contact and a second main fixed contact after the pinion intermeshes with the ring gear, wherein: a resistor is disposed between the first main fixed contact and the first auxiliary fixed contact or between the second main fixed contact and the second auxiliary fixed contact; and an electric current fuse is disposed between the second main fixed contact and the second auxiliary fixed contact or between the first main fixed contact and the first auxiliary fixed contact.

An engine starter includes a starter switch having a plunger assembly movable between non-operating operating positions. When the plunger assembly is at the non-operating position, a gap between main stationary and movable contacts is smaller than the sum of a gap between a pinion and an engine ring gear and the most-widely opened variable gap, which is defined between a drive mechanism and a moving shaft. The arrangement is such that, as the plunger assembly moves from the non-operating position to the operating position, the auxiliary contact is first closed to cause the starter motor to be driven at the first speed, and then the main contact is closed to cause the starter motor to be driven at the second speed.

Engine starter

An engine starter that rotates at a rated speed after a ring gear meshs with a pinion slowly characterized by a wide variety of tolerance in manufacturing, and the inclusion of a magnet switch having an auxiliary contact being protected from an adverse effect of metal powder that could generate as a result of friction between contacts occurring during the closing and opening of the main contact. The starter comprises a starter motor, a pinion that moves back and forth relative to an engine ring gear to engage or disengage with the ring gear, when driven by the starter motor, main and auxiliary contacts for driving the starter motor by two different speeds, a resistor connected to the auxiliary contact, a plunger assembly that supports the movable contact points of the main and auxiliary contacts and shuttles between the non-working and working positions of the movable contact points, a switch coil causing the plunger assembly to move to put the main and auxiliary contacts in and out of contact, and a starter switch including a driving mechanism causing the pinion to advance toward and recede from the ring gear.

A starting apparatus for an internal combustion engine includes an output shaft rotated by an electric motor and a pinion shaft connected to the output shaft by a one-way clutch. The output shaft is connected to the clutch by a helical spline, and the pinion shaft is connected to a pinion by another helical spline. The splines have the same pitch angle as each other and spiral in a direction opposite to a direction in which the output shaft is rotated by the motor. This structure prevents a locked state in which the pinion can neither engage with or be retracted from a ring gear of an engine to be started.

Starting apparatus for an internal combustion engine

In a starter magnet switch, a stopper having a pair of semicircular pieces regulates the movement of a movable contact in an axial direction of a rod. The pair of semicircular pieces are mounted on the mounting grooves of the rod so as to surround the rod in a state where the semicircular pieces are opposed to each other. Projections that regulate the relative axial movement of the stopper with respect to the cover, are disposed on a cover body.

Starter magnet switch

In an overhang type starter motor, an inner periphery of a front portion of a pinion 5 is engaged with a spline serration 2a formed at a front part of a pinion shaft 2; a spring 8 is disposed at a shoulder portion of an intermediate portion of the pinion 5 so as to urge the pinion 5 toward a pinion stopper 6; and the inner periphery of the rear part 5a of the pinion 5 is in slide contact with an outer diameter portion 2b of the pinion shaft so that the pinion does not incline when it comes to engagement with a ring gear of an engine.

Growing community of inventors

Tokyo, Japan

Hayato Yamauchi