EP1769154A1 - Starter motor, particularly for a motor vehicle, provided with a friction free-wheel starter - Google Patents
Starter motor, particularly for a motor vehicle, provided with a friction free-wheel starterInfo
- Publication number
- EP1769154A1 EP1769154A1 EP05775279A EP05775279A EP1769154A1 EP 1769154 A1 EP1769154 A1 EP 1769154A1 EP 05775279 A EP05775279 A EP 05775279A EP 05775279 A EP05775279 A EP 05775279A EP 1769154 A1 EP1769154 A1 EP 1769154A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pinion
- coupling piece
- driver
- integral
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
- F02N15/025—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the friction type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
- F02N15/067—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter comprising an electro-magnetically actuated lever
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
- F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
- F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
Definitions
- Starter in particular of a motor vehicle, equipped with a freewheeling launcher by friction.
- the invention relates to a starter for a combustion engine, in particular a motor vehicle, having a ring gear with a ring gear, comprising an output shaft with teeth, a launcher, a pinion belonging to the launcher, an engine electrical device for rotating the output shaft mechanically coupled to the launcher mounted to slide axially on the output shaft between a rear rest position, and a forward engagement position of the launcher gear with the flywheel start bezel of the combustion engine, said launcher comprising: a driver controlled by a control means between its rear and front positions, and equipped with drive splines engaged with the complementary teeth of the output shaft, a coupling piece of the pinion to the driver via a mechanical freewheel linkage formed according to a friction clutch, having a first friction surface in one of the pinion-driver elements, and a second integral friction surface of the other pinion driver elements, and an elastic device for initiating self-locking of the freewheel.
- a starter 10 according to the prior art comprises an electric motor 11 having a yoke 15, a stator 12 and a rotor 13 mounted coaxially, the stator 12 surrounding the rotor 13, which is mounted on a rotating shaft 14.
- the stator 12 is housed inside the cylinder head 15, which is secured to the support 16 of the starter, intended to be fixed on a fixed part of the motor vehicle.
- the rotor 13 comprises a rotor winding in connection with a manifold 17 secured to the shaft 14 of the electric motor 11.
- the starter 10 also comprises an electromagnetic contactor 18 extending parallel to the electric motor 11 by being implanted radially above it.
- the switch 18 is equipped with an excitation coil B, a movable contact 27 carried by a control rod (not referenced) and terminals 19, 20 of power supply.
- the terminals 19, 20 are shaped to each form a fixed contact inside the insulating cover 21.
- One of the terminals 19 is intended to be connected to the positive terminal of the battery, the other 20 is connected via a cable 22 to the brush holder 17 'associated with the collector 17, here of the frontal type or Radial variant of the axial type.
- FIG. 2 shows a closing element of the yoke 15 bearing a rear bearing for the shaft 14 as described in the document FR A 2 796 990.
- the contactor 18 also comprises a movable core 23, a fixed core 24, a coil support (not referenced) surrounding a guide sleeve (not referenced) of the movable core 23 and a tank (not referenced) for housing the coil B
- This tank is assembled to the cover 21, here by crimping.
- a breaking spring not referenced
- the mobile core 23 is attracted by magnetic attraction towards the fixed core 24 to simultaneously cause the displacement, via the control rod, of the movable contact 27 towards the fixed contacts of the contactor 18 and actuating a control means 25 of the launcher 26 to control the movement thereof between a rear rest position ( Figure 1) and a front position meshing with a crown start gear 300 connected in rotation, possibly elastically, with the flywheel of the combustion engine of the motor vehicle.
- the control means 25 consists of a control lever 25.
- a return spring 42 resting on the tank and on a collar integral with the movable core, is mounted around the mobile core 23 to urge it towards the rear position of rest.
- a spring 41 said spring teeth against teeth, is housed inside the core 23, and cooperates with the upper end of the lever 25 connected to the movable core 23 via a rod 43 connected to an axis 44.
- This spring 41 acts between the bottom of its housing belonging to the core 23 and an end shoulder belonging to the rod 43, whose other end cooperates with the upper end of the lever 25 via the axis 44.
- the electric motor 11 When the movable contact 27 comes into engagement with the fixed contacts of the terminals 19, 20 of the contactor 18, the electric motor 11 is electrically powered via the terminals 19, 20, so that the shaft 14 rotates, and drives the output 28, which is mounted in a bearing 29 before the support 16.
- the front end of the shaft 14, opposite the collector 17, is configured to form a sun gear belonging to an epicyclic gear train constituting a gearbox
- the gear train comprises a gears gear, which is interposed between the output shaft 28 and the aligned shaft 14 of the electric motor 11. This gear has a fixed gear ring internally toothed to engage the sun gear (not referenced) of the gear unit 30.
- a bearing intervenes radially between the front end of the shaft 14 and the rear end of the shaft 28 with a blind hole for receiving the bearing.
- the control lever 25, here in the form of a fork, is coupled by its upper part to the movable core 23 via the rod 43 and the spring 41, and comprises in its intermediate part a pivot axis 31 for its pivotal mounting in the starter.
- the lower part of the fork-shaped lever 25 is mounted in an annular groove 133 of the driver 33 and has profiled fingers or pads for action on the flanks of the driver's throat.
- the axis 31 here comprises two sections extending from opposite faces of the body of the lever 25, here made of plastic, being advantageously molded with the lever 25. These sections are pivotally mounted for example in a bearing. two parts having a first portion connected to the support 16 being advantageously molded therewith and a second portion formed vis-à-vis forming a shim between the actuator 18, more precisely the tank thereof, and the cylinder 15 as written in the document FR A 2,699,605 filed 23/12/1992.
- the wedge which carries two perforated axial wings for mounting the sections of the axis 31, the lever being interposed between the two wings, one of which is visible at 131 in FIG.
- the fixed ring gear of the gearbox comprises an extension shaped to provide a function of articulation of the lever 25.
- the extension consists of two radially projecting lugs and shaped to receive the sections of the axle 31.
- it is provided a fixed base plate interposed between the support 16 and the cylinder head 15 as described in document FR A 2 725 758. This is the base plate which then carries a hinge support for the axis 31.
- the lever is pivotally mounted on a fixed hinge support 131 of the starter in favor of an axis integral with one of the lever elements - fixed hinge support knowing that one can reverse the structures.
- the launcher 26 is slidably mounted on the output shaft 28, and comprises a drive pinion 32, a driver 33 actuated by the fork of the pivoting control lever 25, and a free wheel 34 interposed axially between the driver 33 and the gear wheel 32.
- the driver 33 is internally provided with helical splines in complementary engagement with external helical teeth 36 carried by the output shaft 28.
- the launcher 26 is thus animated by a helical movement when it is moved. by the lever 25 in the direction of a fixed stop 35 fixed to the shaft 28 to come into position before meshing, through its pinion 32, in engagement with the ring gear 300 of the combustion engine of the motor vehicle.
- the freewheeling starter 26 is equipped with a friction clutch, here frustoconical, for coupling the pinion 32 to the driver 33.
- a friction clutch is of the type described in document FR-A-2,826,696. (WO 03/002870). It comprises two concave and convex complementary surfaces, for example frustoconical, cooperating by friction and respectively integral with the pinion 32 and the driver 33 for the transmission of the starting torque.
- FR-A-2 826 696 in particular on pages 13 and 14 thereof.
- the clutch is locked in an engaged position when the electric motor 11 of the starter drives the starting ring gear of the internal combustion engine during starting (driving phase), and is released automatically at the end of starting when the ring gear drives.
- the pinion 32 at a speed of rotation greater than that of the driver 33 (freewheel phase).
- the pinion 32 and the driver 33 of the launcher 26 each have a central bore for the passage of the output shaft 28.
- the pinion 32 of the launcher 26 is secured to a coupling piece of the pinion 32 to the coach 33.
- This coupling piece is provided at its outer periphery with a first friction surface 37 concave, here frustoconical.
- the friction surface 37 belongs to the inner periphery of a skirt of the coupling piece secured here to the pinion 26.
- the lining 37 is attached.
- the driver 33 is equipped at its inner periphery with driving spiral splines 38 engaged with the complementary teeth 36 formed at the outer periphery of the output shaft 28.
- the driver 33 is also equipped externally with a groove.
- This lining 39 is based on thermosetting plastic or thermoplastic, advantageously loaded, to obtain the desired coefficient of friction with low wear.
- the lining 39 is anchored in an annular housing of the driver 33, and has at its periphery a second convex friction surface 40 cooperating in a complementary manner and coaxial with the first friction surface 37 to form a frustoconical friction clutch constituting a connection.
- freewheel mechanism here disengageable, between the pinion 32 and the driver 33.
- the friction surfaces are shaped to form a semi-spherical friction clutch.
- a cover (not referenced) is crimped on a projection of the coupling piece and intervenes axially between the gasket 39 and the coupling piece.
- the coupling piece is integral with the driver so that the surface 37 belongs to the driver and the surface 39 to the pinion.
- a first disadvantage of such a solution is that, depending on the geometrical dispersion of the starter parts, the actuating force exerted by the lever 25 on the driver 33 during the excitation of the contactor 18 would be very high, causing therefore, an increase in the mechanical pressure of the liner 39 on the first friction surface 37. This high contact pressure in the friction clutch would cause premature wear of the friction clutch, with formation in more than one embodiment. significant residual drag torque that could degrade the freewheel function of the launcher 26.
- a second disadvantage of this solution with negative clearance is the mechanical shock to be received by the stop 35 at each docking of the pinion 32 in the training phase.
- an elastic washer axially acting can be mounted axially compressed inside the freewheel, this washer is then interposed between a radial front shoulder of the friction lining, integral in this case with the coach, and the inner face of the aforementioned hood crimped on the coupling piece, so as to resiliently solicit the friction surfaces in contact with each other. This results in a predetermined axial force which applies the friction surfaces against each other.
- the spring washer can also be replaced by a helical compression spring or belong to the hood.
- Such a washer in general such an elastic device for initiating self-locking of the free wheel by friction is described in documents FR A 2,826,696 (WO 03/002870) and FR A 2,772,433 (US A 6 237,442).
- the object of the invention is to provide a starter equipped with a freewheeling launcher that overcomes the aforementioned drawbacks, and reliably initiates internal self-locking of the launcher in training phase.
- Another object of the invention is to improve the freewheeling operation of the launcher. Another object of the invention is to increase the life of the starter.
- the starter according to the invention of the type in which the coupling piece is integral with one of the pinion-drive elements is characterized in that the elastic device comprises at least one priming spring integrated in the launcher between the piece of coupling and the other of the gear-pinion elements, said second element, so as to move the two friction surfaces away from each other in the rest position of the launcher, while creating a friction-resistant torque to initiate said self-locking of the freewheel.
- the presence of the priming spring causes an axial or radial action to obtain a drag torque friction between the driver and the pinion, while the friction surfaces are spaced apart at rest, the rest position of the friction clutch corresponding to the rest position of the launcher.
- This drag torque is sufficient to precisely initiate self-locking of the launcher during the training phase, but remains relatively low so as not to significantly decrease the speed differential in freewheeling phase and not to obliterate the action of the spring teeth against teeth.
- the priming spring makes it possible to reduce the contact pressure between the friction surfaces and to detach the friction surfaces relative to one another because it is arranged in the launcher so as to move the drive away from the pinion, which reduces wear and improve freewheel operation.
- the priming spring has a filter function because it also dampens vibrations and especially shocks when the friction surfaces come into contact with each other. The matting phenomena of the friction surfaces are therefore reduced. The friction surfaces of the free wheel are thus provided in all phases so that the life of the starter is increased.
- the friction clutch of the freewheel is of frustoconical shape
- greater latitude is provided for modifying the angle of the friction surfaces because the priming spring is arranged in the launcher so as to move the coach away from the pinion.
- the angle of the friction surfaces can be increased or decreased.
- the friction clutch is semi-spherical shape also has greater latitude to change the radius of curvature.
- the stiffness of the priming spring can be determined with less precision as this spring has an action that time to move the driver away from the pinion and release the friction surfaces.
- a stop is secured to the coupling piece which comprises, on the opposite side to the stop, a bottom secured to the pinion and the priming spring is arranged between the bottom of the coupling piece and the front face of the coach for exerting an axial action tending to apply the coach on the stop;
- the friction surface of the driver belongs to a friction lining integral with the driver and the priming spring is arranged between the bottom of the coupling piece and the front face of the driver to exert an axial action tending to apply the rear face of the friction lining against the stop;
- the abutment is advantageously formed by a radial flange;
- the priming spring may be an elastically deformable washer in the axial direction, such as a Belleville washer;
- the spring is formed by a helical compression spring;
- the priming spring is arranged between the inner periphery of the coupling piece and the outer periphery of the second non-integral element of the coupling piece to create a radial frictional action between the driver and the pinion;
- the priming spring comprises a corrugated elastic blade arranged between the inner periphery of the coupling piece and the outer periphery of the second non-integral element of the coupling piece to create a radial frictional action between the driver and the pinion;
- the corrugated elastic blade is wedged in a cylindrical extension extending the skirt that includes the coupling piece.
- the coupling piece is integral with the pinion and the priming spring acts between the rear face of the bottom of the coupling piece and the front face of the coach or between the skirt of the piece of equipment. hitch and coach.
- the coupling piece is integral with the driver and the priming spring acts between the front face of the bottom of the coupling piece and the rear face of the pinion or between the skirt of the coupling piece and the pinion.
- priming springs can be provided. These springs are mounted for example in series or intervene staggered.
- FIGS. 1 is a schematic perspective view and partially cut away at the starter, a starter known according to the prior art;
- Figure 2 shows an axial sectional view of the starter of Figure 1;
- FIGS. 1 is a schematic perspective view and partially cut away at the starter, a starter known according to the prior art;
- FIGS. 3 and 4 show schematic views of a known launcher in the driving phase, respectively with a play against positive stop (no friction cone plating in the clutch), and negative (cladding of the two surfaces of the clutch); friction of the clutch);
- Figures 5 to 7 show axial sectional views of three embodiments according to the invention, each making use of a priming spring integrated in the launcher;
- Figure 8 is a vertical sectional view along the line 8-8 of Figure 7, showing the shape of the spring acting radially between the driver and the bell.
- FIGS. 5 to 8 the same reference numerals will be used to designate parts identical or similar to those of FIGS. 1 to 4.
- the control lever 25 and the FIG. contactor are identical or similar to those of FIGS. 1 to 4.
- the launcher 26 comprises a drive gear 32, a driver 33, adapted to be actuated by the fork of the control lever 25 of FIG. 1, and a free wheel 34 formed by a friction clutch, here of frustoconical shape alternatively semi-shery form.
- the latter is provided with two friction surfaces 37, 40 of annular and complementary shape. These surfaces are concave and convex.
- the first friction surface 37 is carried internally by the frustoconical skirt 48 of a bell-shaped coupling piece 45 directed towards the driver 33.
- the skirt 48 is delimited axially by a bottom 46 integral with the pinion 32 and a stop 47 back integral with the coupling piece 45 at the free end of larger diameter.
- the skirt 48 and the coupling piece 45 are parts of revolution.
- the bottom 46 extends radially between the skirt 48 and the pinion 32, and has a planar and annular bearing surface 49 arranged opposite the front face.
- the stop 47 is formed by an annular flange radially flanking the lining 39.
- the bottom 46 is attached by welding, for example of the laser type, to the pinion 32 having for this purpose a non-referenced tubular extension.
- the pinion 32 and the coupling piece constitute a single piece made of one and the same material or bi material, for example bi-material sintering as in FIGS. 1 and 2 or in FIG. 3 of the WO document.
- the bottom 46 is inclined as can also be seen in FIG. 3 of this document WO 03/002870.
- the stop 47 consists of an embodiment in a circlip as in Figure 8 of WO 03/002870.
- the skirt 48 internally bears the friction surface 37, formed by the inner periphery of the skirt in FIGS. 5 to 8, and has at its free end a housing, such as a groove, for mounting a circlips to cooperate with the trainer and make captive parts of the launcher that is thus manipulable and transportable.
- this circlip is replaced by a rim or tongues of radial orientation obtained (s) by folding inward of the free end of the skirt.
- the abutment is constituted by a cover crimped on the free end of the skirt, which has a protrusion for this purpose, as in FIGS. 1 and 2.
- the free end of the skirt has blind mortises, while the abutment has radial tenons at its outer periphery engaging complementary manner in the grooves of axial orientation.
- the abutment is molded with the skirt of the coupling piece.
- the second friction surface 40 in FIGS. 5 to 8, is located on the lining 39 at the outer periphery of the driver 33, and extends parallel to the first friction surface 37, but over a shorter axial distance .
- the friction surfaces 37, 40 are complementary.
- the lining 39 is secured to the driver by being for example fixed by gluing in an annular housing thereof or alternatively fixed by the overmolding technique on the driver advantageously plastic so that the liner 40 is anchored in the coach.
- the size of the abutment 47 is defined in such a way that it can cooperate with the rear face of the lining 39 (see FIGS. 5 to 7).
- the blocking of the freewheeling caster 34 by friction is obtained by the combined action of the splines of the driver 33, driven by the electric motor via the teeth of the output shaft, and the cone friction after engagement of the two friction surfaces 37, 40.
- the electric motor 11 drives the pinion 32 and the ring gear for starting the internal combustion engine.
- the clutch is released in the freewheeling phase when the combustion engine drives the pinion 32 at a speed of rotation greater than that of the driver 33.
- the driver 33 comprises an annular groove 133 for receiving the fork-shaped lower part of the lever 25 of FIG. 1.
- the invention proposes to initiate the internal self-locking of the freewheel 34 in the driving phase and to separate the friction surfaces 37,40 in freewheeling phase.
- the initiation of the self-locking is provided by an elastic device 51 internal to the free wheel 34, shaped according to a friction clutch, and intended to generate a low intensity drag force and to release the friction surfaces in the wheel phase free.
- this ignition device 51 generates a frictional drag torque between the driver 33 and the pinion 32, said torque being sufficient to initiate the self-locking of the launcher 26 in training phase, but relatively low not to significantly reduce the speed differential in the freewheel phase.
- the initiation of the self-locking of the friction clutch is provided by an elastic device 51 integrated in the launcher, with formation of a reaction between one of the driver elements 33-pinion 32 and the piece coupling 45 secured to the other of the 32-coach 33 gear elements.
- the reaction is of the axial type in FIGS. 5 and 6, and radial in FIGS. 7 and 8.
- the axial action exerted by the priming device 51 within the launcher is less than the axial action exerted by the spring against teeth (see FIG. 2) at the level of the driver 33.
- the coupling piece 45 is integral with the pinion while being in one piece or attached to its attachment in the aforementioned manner so that the elastic device 51 is arranged axially between the rear face of the pinion. 32 and the front face of the driver 33 in Figures 5 and 6 and radially between the inner periphery of the coupling piece and the outer periphery of the driver in Figures 7 and 8.
- the elastic device 51 comprises a spring R1 constituted for example by an elastically deformable washer in the axial direction, such as a washer of the Belleville type.
- the spring R1 is interposed between the rear bearing surface 49 of the bottom 46 of the coupling piece 45, and the front face 50 of the driver 33 so as to move the two friction surfaces 37, 40 away from each other. the other, unlike the device of FR-A-2772433 and WO 03/002870 where the self-priming is carried out by contact of the two complementary friction surfaces of concave and convex shape.
- the spring 51 is supported at its outer periphery on the front face of the lining 39 belonging to the front face 50 of the driver, while at its inner periphery it bears on the surface 49 of the bottom 46.
- the rear face of the lining 39 of the friction clutch is held against the stop 47 of the skirt 48, to generate a residual torque by friction between the coupling piece 45 and the coach 33.
- the presence of this spring R1 initiation causes a friction drag torque between the driver 33 and the pinion 32, said torque being sufficient to initiate self-locking of the launcher 26 in training phase, but relatively low so as not to significantly decrease the differential speed in freewheeling phase.
- This freewheeling phase is carried out according to a first step in which the friction surfaces are in contact with reduction of the contact pressure and a second step in which the friction surfaces are detached from one another under the action of the priming spring.
- the spring R1 is replaced by a coil spring R2 compression wedged between the front face 50 of the driver 33 and a shoulder of the bottom 46.
- the effect of this spring R2 is identical to that of Figure 5, and results in a plating force of the liner 39 against the stop 47 of the skirt 48 with spacing of the two friction surfaces 37, 40.
- the elastic device 51 comprises a spring R3 radial action, formed by an annular and corrugated elastic blade.
- the blade is interposed between a cylindrical extension 52 of the skirt 48, and the peripheral surface of the lining 39.
- the friction surfaces 37, 40 remain spaced in the rest position, and the permanent friction effect of the spring R3 against the workpiece coupling 45 and the lining 39, allows the clutch to self-priming following the formation of a resistant torque between the pinion 32 and the coach 33. This effort depends on the applications and is chosen not to disturb unduly the movement of the coach relative to the pinion.
- the frustoconical skirt 48 is extended at its free end by a generally U-shaped annular portion, the axially oriented annular bottom of which is constituted by the cylindrical extension 52 forming a spacer between two branches.
- radial orientation directed towards the axis of the launcher coincides with the axis of the output shaft of Figure 1.
- One of its branches is a connecting portion of the spacer 52 to the skirt 48, while the Another branch, of greater length, constitutes the abutment 47 adapted to cooperate with the rear face of the lining 39.
- the aforesaid U-shaped portion constitutes a groove-like housing for the corrugated spring R3.
- the annular lining 39 has at its outer periphery a first portion constituting the friction surface 40. This portion is extended by a second portion 140 of cylindrical shape, that is to say a second annular portion of orientation axial. This portion 140 is a bearing portion for the corrugations of the spring R3 as shown in FIG. 8. This spring R3 therefore intervenes between the inner periphery of the spacer 56 belonging to the inner periphery of the coupling piece and the portion 140 belonging to the outer periphery of the driver 33.
- the spring R1 of Figure 5 can be replaced by an axially corrugated washer. Alternatively it is an elastomer washer. R1 washer solutions are more axially compact than those in Figure 6.
- the spring R2 of Figure 6 provides a longer elastic stroke and is alternatively variable pitch to obtain a better progressiveness.
- the driver 33 may also be provided with a shoulder for centering the spring R2.
- the bottom 46 is alternatively provided with a centering shoulder of the inner periphery of the washer R2.
- the structures can be reversed in FIG. 7 so that the groove is formed in the lining 39, the bearing portion 140 constituting the bottom of the groove.
- the spacer is connected directly to the free end of the skirt.
- the spring R3 is alternatively in a ring for example in contact with the extension 52 connecting to the skirt 48, while the abutment is attached to the spacer to be able to mount the ring of the spring R3.
- This ring of the spring R3 has at its inner periphery lugs distributed circumferentially for contact with the portion 140.
- the free end of the tabs is advantageously rounded.
- the tabs are advantageously inclined.
- the ring of the spring R3 is in an embodiment fixed, for example by gluing, on the extension 52 so that the presence of a groove is not necessary.
- the spring R3 is supported in all cases on the extension 52 and the portion 140.
- the initiation device 51 comprises, in a variant, several springs connected in series, for example two Belleville washers with mounting of a separating washer between the two Belleville washers.
- the springs are delayed and staggered action, a first spring intervening first and then two springs.
- the parts of the launcher 26 can also be reversed.
- the skirt with the friction surface 37 is alternatively integral with the driver 33, and the second convex friction surface 40 is in this case integral with the pinion 32.
- the springs R1 and R2 in this case act between the front face of the bottom of the coupling piece constituting the front face of the driver and the rear face of the pinion arranged opposite the front face of the bottom of the coupling piece. .
- the spring R3 intervenes between the inner periphery of the coupling piece and the outer periphery of the pinion, the portion 140 is then close to the pinion.
- the springs R1 and R2 intervene between the front face of the driver and the rear face of the pinion 32 arranged facing the front face of the driver, while the spring R3 intervenes radially between the inner periphery. of the skirt and the pinion-coach element which is not integral with the skirt.
- the skirt with its inclined bottom or radial orientation can be in one piece or be reported on the element which it is secured.
- the invention also applies to a starter without speed reducer 30 between the electric motor 11 and the launcher 26.
- the shaft 14 is also the output shaft.
- the collector 17 of the electric motor 11 can be indifferently of the radial or axial type.
- the driver 33 and the pinion 32 may therefore be metal or sintered material.
- the driver 33 and the lever 25 are preferably made of plastic to easily obtain by molding the desired shape for these parts.
- One of the flanks of the groove 133, the one closest to the free wheel 34, may be coated with a metal part, for example by overmolding.
- the other side, the furthest from the freewheel 34, is advantageously metallic while being attached to the driver, for example by overmolding.
- This flank consists for example of a metal washer. In this case we always get a metal contact on plastic material.
- the switch 18 is alternatively remote and extends for example perpendicularly to the shaft 14 of the motor 11 in the vicinity of the rear bearing of the shaft 14 as described in document FR A 2 843427.
- the connecting rod to the core mobile which acts on the upper part of the lever 25, is connected to the movable core by a second rod acting on the spring teeth against teeth and a return mechanism intervening between the two rods.
- the rod 43 thus acts directly or indirectly on the spring teeth against teeth.
- the pinion 32 is alternatively of the outgoing type with respect to the support 16 as described in document FR A 2,745,855.
- the lever 25 carries an axis 31 for its pivotal mounting on a fixed hinge support 131 of the starter 25 ( Figure 2). In a variant, it is the fixed hinge support which carries the axis, the lever being perforated for passage of the axis.
- the contactor is mounted coaxially with respect to the electric motor so that the launcher acts as a mobile core as described in document FR A 2 841 941 to which reference will be made.
- the control means for moving the launcher is not necessarily a lever.
- At least one coating is provided for the support 49, 50, 52, 140 of the priming spring.
- the front face 50 of the driver 33 preferably plastic, is constituted by a metal washer integral with the driver. It may be the same with regard to the rear face 49 of the coupling piece.
- the bearing portion 140 is a metal variant.
- the coating is an anti-noise material.
- the friction surface 40 may be formed directly at the outer periphery of the driver, while the friction surface 37 may belong to a friction lining attached to the inner periphery of the skirt of the coupling piece.
- the skirt 48 can therefore be of cylindrical shape.
- the starter is a starter for a combustion engine, also called a heat engine, of a motor vehicle, such as a light or heavy vehicle, or a boat.
- a combustion engine also called a heat engine
- the invention applies, of course, in the case where the combustion engine is stationary and serves for example to drive at least one power take-off.
- the combustion engine can be stationary and drive, advantageously via a clutch, a motion transmission shaft. All combinations are possible.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Operated Clutches (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0406235A FR2871532B1 (en) | 2004-06-09 | 2004-06-09 | STARTER, IN PARTICULAR OF A MOTOR VEHICLE, EQUIPPED WITH A FRICTION FREE WHEEL LAUNCHER |
PCT/FR2005/001373 WO2006003285A1 (en) | 2004-06-09 | 2005-06-06 | Starter motor, particularly for a motor vehicle, provided with a friction free-wheel starter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1769154A1 true EP1769154A1 (en) | 2007-04-04 |
EP1769154B1 EP1769154B1 (en) | 2013-08-28 |
Family
ID=34946338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05775279.2A Not-in-force EP1769154B1 (en) | 2004-06-09 | 2005-06-06 | Starter motor, particularly for a motor vehicle, provided with a friction free-wheel starter |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1769154B1 (en) |
CN (1) | CN1965164B (en) |
BR (1) | BRPI0511159B8 (en) |
FR (1) | FR2871532B1 (en) |
MX (1) | MXPA06014224A (en) |
WO (1) | WO2006003285A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010029260B4 (en) | 2010-05-25 | 2022-01-05 | Seg Automotive Germany Gmbh | Starter for an internal combustion engine |
FR2978500B1 (en) * | 2011-07-26 | 2015-03-13 | Valeo Equip Electr Moteur | LAUNCHER MOBILE ASSEMBLY - GEAR CONTROL LEVER WITH A STARTING CROWN OF A THERMAL MOTOR AND STARTER OF A THERMAL MOTOR COMPRISING SUCH AN ASSEMBLY |
FR2978501B1 (en) * | 2011-07-26 | 2016-03-18 | Valeo Equip Electr Moteur | FRICTION FRICTION LAUNCHER WITH A STARTING CROWN OF A THERMAL MOTOR AND STARTER OF A THERMAL MOTOR COMPRISING SUCH A LAUNCHER |
FR2981412B1 (en) * | 2011-10-14 | 2017-04-14 | Valeo Equip Electr Moteur | STARTER HEAD AND STARTER EQUIPPED WITH SUCH HEAD |
FR2997457B1 (en) * | 2012-10-31 | 2014-11-07 | Valeo Equip Electr Moteur | FRICTION FRICTION LAUNCHER WITH A STARTING CROWN OF A THERMAL MOTOR AND STARTER OF A CORRESPONDING THERMAL MOTOR |
DE102013202460B4 (en) * | 2013-02-15 | 2021-05-12 | Seg Automotive Germany Gmbh | Starting device for an internal combustion engine |
FR3013396A1 (en) * | 2013-11-21 | 2015-05-22 | Valeo Equip Electr Moteur | STARTER MOTOR THERMAL MOTOR STARTER LAUNCHER AND STARTER COMPRISING SUCH LAUNCHER |
DE102013020327B4 (en) * | 2013-12-05 | 2022-05-25 | Borgwarner Inc. | Starter freewheel and freewheel arrangement with such a starter freewheel |
WO2017030815A1 (en) * | 2015-08-18 | 2017-02-23 | Borgwarner Inc. | Starter with disconnecting clutch |
DE202020107199U1 (en) | 2020-12-11 | 2022-03-15 | Dana Belgium N.V. | clutch assembly |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2772433B1 (en) * | 1997-12-17 | 2000-02-04 | Valeo Equip Electr Moteur | MOTOR VEHICLE STARTER COMPRISING AN IMPROVED LAUNCHER |
JP2001012336A (en) * | 1999-06-29 | 2001-01-16 | Mitsuba Corp | Single axis type starter device |
CN2454559Y (en) * | 2001-02-14 | 2001-10-17 | 重庆川渝精工机械配件厂 | Pedal starting mechanism for motorcycle |
MXPA03001850A (en) * | 2001-06-29 | 2003-06-04 | Valeo Equip Electr Moteur | Motor vehicle starter with improved starter drive assembly. |
FR2838777B1 (en) * | 2002-02-28 | 2005-12-02 | Valeo Equip Electr Moteur | ELECTRIC STARTER WITH DAMPING STOPPING FOR LAUNCHER |
-
2004
- 2004-06-09 FR FR0406235A patent/FR2871532B1/en not_active Expired - Fee Related
-
2005
- 2005-06-06 WO PCT/FR2005/001373 patent/WO2006003285A1/en active Application Filing
- 2005-06-06 MX MXPA06014224A patent/MXPA06014224A/en not_active Application Discontinuation
- 2005-06-06 EP EP05775279.2A patent/EP1769154B1/en not_active Not-in-force
- 2005-06-06 CN CN2005800190490A patent/CN1965164B/en not_active Expired - Fee Related
- 2005-06-06 BR BRPI0511159A patent/BRPI0511159B8/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2006003285A1 * |
Also Published As
Publication number | Publication date |
---|---|
BRPI0511159B8 (en) | 2017-06-13 |
CN1965164A (en) | 2007-05-16 |
FR2871532A1 (en) | 2005-12-16 |
CN1965164B (en) | 2010-06-16 |
EP1769154B1 (en) | 2013-08-28 |
MXPA06014224A (en) | 2007-03-12 |
WO2006003285A1 (en) | 2006-01-12 |
BRPI0511159A (en) | 2007-12-04 |
FR2871532B1 (en) | 2006-08-04 |
BRPI0511159B1 (en) | 2017-05-30 |
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