Abstract: A starter is composed of an output shaft, a pinion having an outer gear slidably disposed on the output shaft, a planetary gear-type speed reduction mechanism, a one-way clutch having clutch outer linked with the planetary gears, a clutch inner linked with the output shaft and a plurality of rollers disposed between the clutch outer and clutch inner, and an alignment member, disposed around the one-way clutch. The alignment member restricts deviation of axis of the clutch outer from the axis of the output shaft.

Abstract: A cranking device (10) for internal combustion engines, in which the mounting of a gear arrangement (15) with a free-wheel coupling (25), a power takeoff shaft (17) and a shifting pinion (26) as well as a starting relay (30) on a intermediate plate (21) is to be automated. It is proposed that the intermediate plate (21) and a bearing block (36) for the deflection lever (27) of the starting relay (30) form an assembly unit, on which on the one hand the gear arrangement (15) with the power takeoff shaft (17) and the shifting pinion (26) as well as the starting relay (30) can be pre-mounted, and in which on the other hand these parts can be joined together by the deflection lever (27) that is mounted in detent-lockable fashion on the bearing block (36).

Abstract: A starter motor assembly is provided. A motor housing encloses an electric motor having a rotatable armature shaft. A planetary gear assembly is provided in a pinion housing, including planetary gears, a planet carrier, and a drive shaft. A pinion is engageable with the drive shaft for turning a flywheel of an engine. A non-load-bearing overrunning clutch assembly is provided, including an outer clutch piece removably fixed with respect to the pinion housing to be non-rotatable, and a rotatable inner clutch piece engaged with the planetary gears. Structure provided between the outer and inner clutch pieces allows rotation of the inner clutch piece in one direction and locks up the inner clutch piece in the other direction. When the starter motor assembly is energized, rotation of the armature shaft and planetary gears at a first rotational velocity rotates the inner clutch piece in the lockup direction.

Abstract: The commutator is disposed within the case of the starter motor at the end nearest to the pinion, an arc-shaped recess is formed in the outer circumferential wall of the case radially outside the commutator so as to indent between the brushes, and the electromagnetic switch is accommodated in the arc-shaped recess so as to be positioned radially outside the commutator and between the end surface of a core portion of the armature nearest to the commutator and the end surface of the over-running clutch nearest to the commutator, with the central axis thereof generally parallel to the rotor shaft, and with part thereof positioned radially inside the outer circumferential surface of the starter motor.

Abstract: A two-piece housing is provided with several bores (3, 4) which extend through the two housing sections (1, 2). Each bore (3, 4) is concentrically surrounded by a centering in each housing section (1, 2), which is in the shape of an internal centering in one housing section and an external centering in the other housing section. These bores (3, 4) are manufactured in each housing section (1, 2) together with the respective concentrically surrounding centering and in one process step with a drilling tool which includes two cutters (8, 9, 10) adapted to the diameters of the bore and the centering respectively. Subsequently, the housing sections (1, 2) provided with the bores (3, 4) and centerings are assembled in such a way that the centerings fittingly interengage. (FIG.

Abstract: A starter for an engine includes a housing. A starter motor in said housing includes a field apparatus including a tubular yoke being provided to form a part of the housing. An annular ventilation passage is provided in the starter defined along an inner periphery of the yoke and being hermetically sealed from an inside of the yoke. A first ventilation hole is defined proximate a bottom portion of the housing for interconnecting an inside of the passage to an outside of the housing. A second ventilation hole is defined proximate a top portion of the ventilation passage for interconnecting the inside of the passage to an inside of the starter motor.

Abstract: A motor vehicle starter has a starter head which is driven in rotation by a motor shaft and which is displaceable in sliding movement between a rest position and a working position, with the starter head projecting outside the starter casing. A sealing gasket is arranged on the starter head and comprises a seal body which is fitted on the latter in front of an external transverse face of the casing. The seal body carries a frusto conical lip which is joined at its leading end to the seal body. The lip extends axially towards the rear so that its free terminal edge is in contact with the external transverse face of the casing over the whole periphery of the aperture in the casing, but only when the starter head is in its rest position.

Abstract: A starter motor has a rotating armature with a rotating shaft on which a groove is formed, a rear bracket, and a cylindrical-shape yoke connected to a front bracket which supports a pinion shaft. A holder washer member is inserted rotatively in the groove and limits movement in the axial direction of the rotating armature. A holder plate member is provided with a brush holder member. The holder washer member is sandwiched in an axial direction between a step portion of the rear bracket and an inner peripheral portion of the holder plate member. An outer peripheral edge portion of the holder plate member is sandwiched between an outer peripheral edge portion of the rear bracket and a step portion of the yoke. As a result, the rear bracket is fixed by a through-bolt to the front bracket. In the starter motor structure the holder plate member can be fixed to the rear bracket without using a fixing component such as a screw.

Abstract: In a starter with a planetary gear speed reduction mechanism, a first output shaft retaining member (retaining member 10, washer 20) and a second output shaft retaining member (pinion retaining ring 250) are mounted on an output shaft 220 in such a manner as to sandwich from axially front and rear directions a bearing support portion of a housing 400 which supports one end of the output shaft 220, so that a thrust load in the frontward and rearward directions of the output shaft 220 is received at the front and rear end faces of the bearing support portion of the housing 400. Therefore, the axially rearward movement of the output shaft 220 is regulated assuredly without regulating it by the rear end face of the center bracket 360 and the mortor partition wall 800, thereby preventing deformation of the center bracket.

Abstract: A pinion (7A) of a starter motor for an internal combustion engine, which pinion has an outer peripheral surface formed with gear teeth (7G) and an inner peripheral surface snugly fit with a bearing (8) so that the pinion can slideably move along an output shaft (6) of the starter motor through the medium of the bearing (8). The internal combustion engine is started by the starter motor through a ring gear of the engine which gear is caused to mesh with the gear teeth of the pinion upon starting of the engine. An inner diameter of a tip end portion (7a) of the pinion at which the pinion is brought into contact with the ring gear upon meshing therewith is so dimensioned as to lie between an inner diameter and an outer diameter of the bearing (8) in order to increase the strength of the pinion.

Abstract: A starter has a motor, output shaft driven by the motor, a pinion moving body mounted on the output shaft and engageable with a ring gear, an electromagnet switch, and a rotation restricting member driven by the electromagnet switch to engage and restrict rotation of the pinion moving body until engagement of a pinion gear with the ring gear. To protect the pinion rotation restricting member, continued engagement of the rotation restricting member with the pinion moving body is released by a guide when the pinion moving body rotates a predetermined angle. Further, to protect the pinion moving body, the pinion moving body is advanced closely to the ring gear and thereafter the motor is allowed to rotate so that the pinion engages the ring gear at low rotation speeds.

Abstract: In an engine starter according to the present invention, an annular stopper disposed between the pinion unit and the solenoid device so as to determine the rest position of the pinion unit is formed with a tongue projecting radially outwardly from its outer periphery, and a shoulder surface defined in the gear cover so as to abut an end surface of the solenoid device and thereby determine the axial position of the solenoid device is formed with a recess for receiving the tongue of the annular stopper, with the tongue and the recess being dimensioned with respect to each other so as to allow the tongue to be resiliently interposed between the recessed part of the shoulder surface and the end surface of the solenoid device and to define a space which accommodates a corresponding deformation of the tongue.

Abstract: In a starter having a planetary gear reduction mechanism and a shock absorbing device, a first friction plate of the shock absorbing device is engaged with an internal gear of the reduction mechanism to restrict the internal gear from rotating. A space is provided radially between the internal gear and a housing to allow rotation of the internal gear upon application of an impact shock. A cylindrical member which is harder than the housing is disposed between the space relatively movably against the housing and the internal gear so that the internal gear is restricted from directly contacting the housing.

Abstract: In a starter, a planetary gear reduction mechanism has pins supporting planetary gears and directly fitted into an outer member of a one-way clutch. The outer member rotates with the revolution of the planetary gear. An internal gear engaged with the planetary gears is connected with a rotary disk of a shock absorbing device disposed on the outer periphery of the one-way clutch through a connecting member and an elastic member. The connecting member has engaging projections engaged with the elastic member within the connecting recess of the internal gear. The engagement projections are housed within the connecting recess with some clearance provided in the radial direction. The internal gear is thus held radially movably with respect to the rotary disk via the connecting member.

Abstract: In an engine starter including a solenoid device for actuating a switch for the electric motor and to drive the pinion into mesh with the ring gear of an internal combustion engine, the solenoid device includes an armature outer member which moves in the direction to push out the pinion against the spring force of a first return spring in the energized state of the solenoid device, and an armature inner member which is resiliently urged by a second return spring, and is telescopically disposed with respect to the armature outer member with a coil spring interposed coaxially between them. An annular spring retainer is press fitted into the inner bore of the armature outer member to receive a corresponding coil end of the coil spring.

Abstract: A rotation restricting member made of a resilient body such as a leaf spring is driven by a magnet switch upon energization of a motor and engages engaging grooves formed on an outer peripheral surface of an outer portion of a one-way clutch so that the rotation restricting member restricts rotation of the one-way clutch. The motor has first and second field coils connected in parallel. The first field coil is connected to an exciting coil in the magnet switch in series and the second field coil is connected to a motor contact in the magnet switch in series. When a starter switch is actuated, only the first field coil is actuated first with low voltage. Then, the motor contact is closed and the second field coil is actuated also so that the motor rotates at a high speed with full voltage.

Abstract: In a motor vehicle starter, a pivoted control lever acts on a starter head, the free upper end of the control lever being attached to the free rear end of a draw bar for actuating the lever. The draw bar is part of the starter contractor. The front end of the draw bar has a thrust head engaged with a compression spring mounted in a movable core of the contractor. The attachment means coupling the draw bar to the control lever include a hook portion at the rear end of the draw bar, this hook portion being received in a complementary recess formed, in facing relationship with it, in the upper end of the control lever. The draw bar is generally in the form of a plate lying in a plane containing the direction in which the draw bar is displaceable.

Abstract: A starter for an engine, having a ring gear includes an output shaft for slidably holding a pinion gear engageable with the ring gear, a housing having an opening portion that enables the pinion gear to engage with the ring gear when the pinion gear advances, a cover having a shutter, a front wall and a side wall for sliding together with the pinion gear. The shutter opens the opening portion when the pinion gear advances and shuts the most part of the opening portion when the pinion gear retracts. The front wall is provided to cover at least half of a front portion, which faces to the ring gear, of the pinion gear. The side wall is extended from the front wall in a direction parallel to an axis of the output shaft to cover at least half of the gear tooth periphery in a circumferential direction of the pinion gear. When water carried by the rotating ring gear comes to the opening portion when the pinion gear rotates with the ring gear, most of such water is blocked by the gear tooth.

Abstract: To reduce the size of a starter for installing it in a smaller engine compartment, the rotational speed of the starter motor has to be high and it is reduced to a certain speed through a reduction device to obtain a higher torque. To realize a high reduction ratio in a small planetary gear reduction device, an impact force imposed on the device at an instant a starter pinion engages with a engine ring gear and repeating impacts during a cranking period must be reduced. As a coupling between an internal gear and a housing of the reduction device, a flexible or a resilient coupling is disclosed herein. The flexible or resilient coupling relieves an excessive impact force at the engagement by permitting rotation of the internal gear relative to the housing, and reduces noise caused by the cranking impacts by permitting a small vibrating move of the internal gear. The flexible coupling is realized by a combination of a bumpy surface and projections coupled thereto.

Abstract: In a starter having a pinion gear on an output shaft driven by a starter motor, a magnet switch, and a shift lever pivotally connecting the pinion and the magnet switch, the shift lever is formed at one end thereof with an annular arm body for engagement with the pinion gear. The annular arm body is engaged with the pinion gear to receive the pinion returning force evenly thereby to prevent damage on the shift lever. Preferably the annular arm body is engaged with the pinion gear through a plate and a bearing.

Abstract: In a cylindrical yoke 1 of a planetary gear-type starter which acts as the magnetic field of the motor of a planetary gear-type starter for reducing the rotation of a motor output shaft 31 and transmitting the reduction rotation to a starter output shaft 21 so that an inner peripheral gear portion is improved in precision by suppressing a material remaining in the yoke 1 and gear noise is reduced in operation, the yoke 1 comprises an opening formed at the bottom portion of the yoke for journaling the starter output shaft of the planetary gear-type starter, an inner peripheral gear portion 11 formed in the vicinity of the bottom portion 12 of the yoke, and an annular thick portion 18 formed between the inner peripheral gear portion and the bottom portion on the inner peripheral side thereof, wherein the yoke 1 incorporates the flange 2 of the starter output shaft and planetary gears 4 which are rotatably mounted to the flange as well as engaged with the outer peripheral gear portion 32 of the motor output shaf

Abstract: A separating wall comprised of a slanting portion, an anti-falling portion and a thrust receiving portion, is provided integrally with a yoke. The slanting portion is formed from the front end of the yoke to the side of a speed reduction mechanism, tilting in the inner radial direction. The anti-falling portion is formed extending substantially vertically from the slanting portion to the inner radial direction preventing planetary gears of the speed reduction mechanism from coming-off mounting pins, by way of contacting the pins supporting the planetary gears and the end surface of a bearing. The thrust receiving portion supports a shaft rotatably via a bearing fitted with the shaft and receives thrust load of the shaft. The thrust receiving portion is cylindrically shaped and bent from the anti-falling portion to the side of an armature core. The cylindrical portion of the thrust receiving portion is pressed and fitted around the outer periphery of the bearing fitted to the shaft.

Abstract: A motor vehicle starter head includes a starter pinion which slides axially on a starter head shaft, an actuator coupled with the pinion for axial movement with the latter, and abutment means for limiting the travel of the pinion in sliding movement with respect to the starter head shaft, at least towards its working position. The actuator has internal splines cooperating with external splines on the starter head shaft, and the abutment means comprise an abutment member which is coupled for axial movement with the actuator and which cooperates with a transverse flank of the external splines on the shaft.

Abstract: A starter for an automotive vehicle is comprised of an output shaft rotationally driven by a DC motor, a pinion having on its inner circumference a helical spline engaged with a helical spline on the output shaft. A pinion restricting member has a long arm engageable with teeth formed on the outer circumference of the pinion. A drive housing abuts axially at the pinion restricting member, and a center case abuts axially against the pinion restricting member. The pinion restricting member is held assuredly and axially by the drive housing and the center case.

Abstract: A starter includes a pinion supported in a housing rotatably and engageably with a ring gear fitted to a crankshaft, and a starter motor fixed to the housing and having a rotary shaft for driving the pinion through a speed reduction mechanism. The starter is mounted on an engine block in such a manner that an axis center of the motor is located closer to the axis center of the ring gear than an axis center of the pinion. This starter mounting structure reduces the rotary vibrations of the starter motor.

Abstract: A plurality of rollers is accommodated in respective roller-accommodating grooves formed on an inner peripheral face of a clutch outer member integral with a planet carrier connected with an output shaft. The rollers contact a peripheral face (roller-contact face) of a clutch inner member integral with a stationary member. Roller-engaging grooves are formed on an outer peripheral face of the clutch inner member.

Abstract: An attracting coil is directly wound on a non-magnetic heat-conductive sleeve and a plunger contacts the sleeve in a starter. An influence of heat generated through current flow to a motor and heat generated at the attracting coil through current flow to the attracting coil itself are transmitted and released from the attracting coil directly to the plunger. Therefore, decline of the attracting force of the attracting coil is prevented. A magnet switch is provided in the vicinity of the opposite end of a pinion of the motor. Thus, when the starter is mounted on an engine, the starter does not interfere with the engine and the mounting work is facilitated.

Abstract: An electric starter includes a metal base plate which supports the body of a starter head which is actuated by a lever articulated on an articulation support member. The articulation support member is carried by the base plate, on which it is formed by being molded in a plastics material. A crown having internal teeth is also molded on to the base plate in a plastics material, simultaneously with the molding of the support member. The support member and the toothed crown are two separate components, each formed in the mold from a separately injected, separate charge of plastics material.

Abstract: A starter motor with an intermediate gear includes a retaining member free from being deformed or damaged due to the centrifugal force induced by the high-speed revolution of the intermediate gear of a starter motor driven by the ring gear of an engine. The retaining member is used to prevent a movable coupling for coupling an overrunning clutch and the intermediate gear from axially slipping out. A flange-like retaining member 67b for preventing the movable coupling 68 from axially slipping out is integrally formed on the diametral outside of the end portion of the boss 67a of the intermediate gear 67.

Abstract: In a starter, to improve a heat dissipation performance, an axial length from the end of a starter housing fit into a clutch housing to a starter installation surface of the clutch housing is set to be longer than an axial length from the end of a starter motor not fit into the clutch housing to the starter installation surface. Alternatively, the exposed surface area of the starter housing fit into the clutch housing is set to be larger than the exposed surface area of the portion of the starter housing not fit into the clutch housing and the starter motor. With this configuration, the starter housing can be effectively cooled by whirling air flow in the clutch housing.

Abstract: In a planetary gear reduction starter, a motor, a planetary gear reduction mechanism connected to the front end of the motor, a rotary output shaft extending from the planetary gear reduction mechanism and an overrunning clutch engageable with the rotary output shaft are assembled together without using a front bracket.

Abstract: A starter having a highly reliable overrunning clutch which has grooves on both a clutch member inner and a clutch outer member. Rollers are sandwiched from the front and rear torque conveyance direction by the roller contact surface of each groove, so a large stress such as with the roller-type overrunning clutch using the wedge-effect is not applied on each contact surface and roller contact surface. This reduces the inertia of the clutch, and suppresses the impact force generated when a pinion engages an engine ring gear.

Abstract: A starter has an output shaft 3a, an overrunning clutch 4 and a pinion 12 carried on the output shaft, a stopper 21 carried on the output shaft at the front of the pinion to restrict the displacement of the overrunning clutch and the pinion, and a front bearing 16 for supporting the front end of the output shaft. The stopper is formed in a cylindrical shape and is supported by an inner peripheral portion of the front bearing, and a ring 22 for fixing the stopper is fitted into a groove 23a which is formed in the output shaft at the front of the front bearing.

Abstract: In an engine starter comprising a one-way clutch provided around a pinion support shaft carrying a pinion in a torque transmitting relationship but in an axially slidable manner, and an annular input gear to transmit torque to a clutch outer member of the one-way clutch, to prevent an eccentricity of the clutch outer member from seriously affecting the coupling structure between the motor and the input gear, the outer circumferential surface of the clutch outer member is provided with an external teeth serration while the input gear 12 is provided with an internal teeth serration so as to form a serration coupling. The serration coupling is provided with a sufficient radially play to accommodate a maximum eccentricity of the clutch outer member. Thus, the engine starter can be made reliable in use without requiring any undue precision during the fabrication process.

Abstract: An engine starter gearing for starting an engine having a starter gear includes a power shaft and a housing affixed on the power shaft. The housing retains an axially displaceable driven clutch member. An internal groove is provided within an open end of the housing. The driven clutch member has an enlarged external diameter portion that fits within the housing. The driven clutch member is held in position by a compressed spring retained within the housing. An installation groove is formed in the driven clutch member spaced away from the enlarged diameter portion. A lock ring is positioned within the housing by first inserting it in the installation groove. The driven clutch member is axially depressed inwardly within the housing, compressing the spring until the locking ring snaps in position in the housing internal groove.

Abstract: An electric starter for an internal combustion engine has a coaxial pinion drive mechanism for urging the pinion gear into a positively fully meshed arrangement with the flywheel of the internal combustion engine prior to full power application to the cranking motor. The pinion drive mechanism is incompressible throughout its motion. The drive solenoid has a solid plunger which is limited in its stroke corresponding to the fully meshed position of the pinion gear by a pair of electrical contacts which are shorted at full stroke by the plunger functioning as a contact therebetween. The cranking motor is operated at a slow rotation at all times prior to full meshing of the pinion gear to aid in meshing thus reducing tooth wear and gear lash.

Abstract: A starter with an epicycle reduction gear having a one-way clutch within the casing thereof, which can shut off dust and filthy water, has a simplified structure, has a reduced number of parts and components, has reduced size and weight and has improved durability of the one-way clutch. Such a starter achieves these effects by housing the one-way clutch within the casing of the epicycle reduction gear. The one-way clutch is housed within the casing of the epicycle reduction gear, which includes a plurality of planetary gears. The one-way clutch comprises a small-diameter cylindrical part of the casing, serving as a clutch inner member, a small-diameter cylindrical part of the internal gear, serving as a clutch outer member, fit on the small-diameter cylindrical part of the casing, a clutch roller disposed between the small-diameter cylindrical part of the casing and the small-diameter cylindrical part of internal gear, and a spring.

Abstract: A starter unit for an internal combustion engine, especially a motor vehicle engine, comprises an electric motor and an electromagnetic actuator, having parallel axes and being secured on a starter frame or chassis which has at least one starter nose. The starter nose defines a hood which envelops the end of the output member of the electromagnetic actuator and the free end of the shaft of the motor. The motor shaft carries a Bendix gear or pinion. The unit also includes an actuating lever for controlling axial displacements of the Bendix gear. The actuating lever pivots about an axis which is substantially at right angles to the axes of the motor and actuator.

Abstract: A starter includes a housing having a water barrier wall, a drive shaft disposed in the housing, and pinion gear having a flange portion. The water barrier wall comes into contact with the flange portion when the starter is in operation. The pinion gear is adapted to engage with a ring gear of an engine, which the starter starts. The pinion gear contacts the drive shaft through a sliding portion. The structure of the starter prevents water, dust, dirt and other contaminants from leaking into the housing via a window in the housing. Thus, the function and operability of the starter is improved.

Abstract: 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.

Abstract: A coaxial starting motor comprises a d.c. motor whose armature has a hollow rotary shaft projected at its end forwardly, and which has a rear end provided with an electromagnetic switch which is arranged to be coaxial therewith, and which has a movable core attracted by a fixed core on energizing an exciting coil to forwardly move a movable rod with the movable core and causing a movable contact supported by the movable rod to get in touch with a fixed contact wherein the electromagnetic switch has a fixed core partitioning a contact chamber and a movable core chamber so as to prevent contact powder from entering the movable core chamber and hamper the sliding motion of the movable core.

Abstract: A starter head for an internal combustion engine that has a motor shaft and a starter pinion which is arranged for sliding movement along the motor shaft. A fastening shroud secures a free wheel and a drive sleeve to the starter pinion. The drive sleeve carries a return device, which has a ring member having at its inner periphery a plurality of resiliently deformable teeth. These teeth cooperate, in snap-fitting engagement, with a groove which is formed on the outer periphery of an end portion of the drive sleeve.

Abstract: A starter motor for an internal combustion engine having an overrunning clutch (40) which transfers rotation of a d.c. motor to a pinion gear for driving an internal combustion engine. An outer member (41) of the overrunning clutch (40) is slidable along an output shaft (7). When the clutch is slid toward the engine (forward) the d.c. motor is electrically energized and its rotation is imparted to the output shaft (7) via a planetary reduction gear (13). When the overrunning clutch (40) is in this position, the clutch outer member (41) is coupled to the output shaft (7) by helical spline (8). Clutch inner member (22), which is caused to rotate by the rollers (23), transmits rotary motion to the pinion, thus rotating the engine. The overrunning clutch is caused to slide along the output shaft by a shift lever (34) which is moved forward and rearward by an electromagnetic switch (31). The shift lever has a two-pronged lower end engaged with an annular engagement groove (41c).

Abstract: In a pinion shift device for a starter of the type employing a semicircular ring-shaped shift plate, the device is constructed such that the shift plate is easily assembled to a shift lever to be suitable for automatization, slide contact portions between the clutch body and the shift plate and/or between the shift flange and the shift plate are less subjected to overflow or exhaustion of grease and give rise to a smaller extent of wear, and thus service life of the device is prolonged. A semicircular ring-shaped portion of the shift plate is loosely fitted in an axial gap between a clutch body and a shift flange integral with a clutch sleeve. A recessed groove for storing grease therein is provided in at least one of paired opposite side faces between the semicircular ring-shaped portion of the shift plate and the clutch body as well as the shift flange. The shift lever and the shift plate are both molded using resin.

Abstract: In a starter for internal combustion engines, a tubular pinion gear support shaft 8 is rotatably supported by a casing, and coupled to a drive shaft of a motor so as to be rotatively driven by the motor, and an annular pinion gear 3 is fitted on the pinion gear support shaft in axially slidable but rotatively drivable relationship. A push rod 9 is axially slidably received in the tubular pinion gear support shaft and provided with a free end engaged with a free end of the pinion gear for transmitting a shifting force for driving the pinion gear into meshing with a ring gear of an engine from a shift lever to the push rod. A shift spring 15 consisting of a compression coil spring is coaxially received in the pinion gear support shaft and interposed between an associated end of the shift lever and a base end of the push rod. Thus, the assembling of the starter is simplified while the action of the shift spring is stabilized, and the design of the starter is made compact.

Abstract: A starting system for an internal combustion engine includes a starter motor and solenoid mounted within separate, angularly spaced receptacles of a reduction gear housing. The starter motor drives a reduction gear within a the gear housing, which, in turn, drives a pinion gear on a shaft. The solenoid controls a retractable rod which selectively pivots a cantilever arm within the housing. The pivoted cantilever arm pushes the pinion gear shaft against the action of a coil spring, which urges the pinion gear into engagement with the engine flywheel ring gear, turning the flywheel ring gear. The solenoid also acts as a switch for the starter motor. When the engine is started, power is removed from the solenoid, which causes the rod to extend, pivoting the cantilever arm in the opposite direction, and allowing the spring to withdraw the pinion gear from engagement with the flywheel ring gear. A plurality of strengthening ribs give the housing strength with a minimal weight addition.

Abstract: A shift lever supporting device for a starter motor has a support 40 in a cylindrical form which has at its front end a cut groove 40a, a shift lever 34 fitted to the groove at an intermediate portion of the shift lever, a connection pin 36 inserted in the support 40 and the intermediate portion of the shift lever to pivotally support the shift lever, and a packing 37 of rubber fitted to the rear end of the support 40 by interposing a plate 38. The support 40, the plate 38 and the packing 37 are inserted into a hole 6a formed in a front bracket 6, and the rear end of the packing is received by the front end of an intermediate bracket 4 or a yoke.

Abstract: A starter head for the starter of an internal combustion engine includes a motor shaft, on which a starter pinion is mounted for axial sliding movement. A free wheel and a driving sleeve are secured on the starter pinion by means of a securing shroud. The starter pinion has a bore over the whole of its length, with the motor shaft being displaceable within this bore. The starter has a device for limiting the axial throw of the starter head. The throw limiting device comprises a stop ring cooperating with a further ring fixed on the free end of the engine shaft within the bore of the pinion. The stop ring is fitted in a semicylindrical groove formed in the bore.

Abstract: A starter comprises a planetary gear reduction mechanism including an internal gear provided with a cylindrical chamber, a rotary disk, and a friction disk for restricting the rotary disk. The rotary disk is prevented from angularly moving with respect to the internal gear through an elastic member. When a larger load is applied to the internal gear which the elastic member cannot absorb, the rotary disk is released from the friction disk to angularly move to absorb such larger load.

Abstract: A cranking arrangement has a rotor, an output shaft driven by a rotor, a pinion carried by the output shaft for driving a toothed ring of an internal combustion engine, the output shaft being supported so that it can be displaced axially for engagement and disengagement of the pinion, and a brake surface. The output shaft acts upon the rotor in a disengaged position axially in such a way that the rotor meets the brake surface.