CN202579001U - Automobile starter and drive gear assembly thereof - Google Patents

Automobile starter and drive gear assembly thereof Download PDF

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Publication number
CN202579001U
CN202579001U CN 201220236427 CN201220236427U CN202579001U CN 202579001 U CN202579001 U CN 202579001U CN 201220236427 CN201220236427 CN 201220236427 CN 201220236427 U CN201220236427 U CN 201220236427U CN 202579001 U CN202579001 U CN 202579001U
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CN
China
Prior art keywords
shift fork
drive gear
fork actuator
actuation gear
gear assemblies
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CN 201220236427
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Chinese (zh)
Inventor
陈国军
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Thornger Automotive Parts Germany GmbH
Robert Bosch GmbH
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Thornger Automotive Parts Germany GmbH
Robert Bosch GmbH
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Priority to CN 201220236427 priority Critical patent/CN202579001U/en
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Publication of CN202579001U publication Critical patent/CN202579001U/en
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Abstract

The utility model discloses an automobile starter and a drive gear assembly thereof, wherein the drive gear assembly includes a drive gear and a shifting fork driving part, wherein the drive gear is provided with an axially-through inner hole, and a spline is formed in the inner hole; the shifting fork driving part is preferably made of plastics, adopts a shape similar to a cylinder, and is attached to the rear end of the drive gear through a catching part, and the catching part is provided with a structure enabling the drive gear to rotate relative to the shifting fork driving part around the central axis of the drive gear assembly; and the shifting fork driving part is provided with an accommodating space for accommodating the inner end of the shifting fork of the starter, and the accommodating space is internally provided with a backstop, which is matched with the inner end of the shifting fork and prevents the shifting fork driving part from rotating relative to the shifting fork around the central axis of the driving gear assembly. The utility model also discloses an automobile starter including the drive gear assembly; and the drive gear assembly contributes to the improvement on the service life of the drive gear assembly.

Description

Vehicle starter and drive gear assemblies thereof
Technical field
The utility model relates to a kind of vehicle starter that is used for the drive gear assemblies of vehicle starter and comprises this drive gear assemblies.
Background technique
The common electrification starter motor of modern vehicle starts the motor of vehicle, and starter motor changes the electric energy that vehicle battery stores into mechanical energy, drives the engine running of vehicle, with engine start.
Starter motor is made up of motor, driving mechanism and control mechanism etc. usually.An a kind of part of existing vehicle starter has been shown among Fig. 1, and wherein, motor 1 is installed in the housing 2 of starter motor, is used to produce running torque.This running torque is delivered to the gear ring (not shown) on the engine flywheel through driving mechanism, drives the crankshaft rotating of motor.
The output shaft 5 that driving mechanism mainly comprises the reducing gear 3 that links to each other with the output shaft of motor 1, link to each other with reducing gear 3 through free wheel device 4, be set in the actuation gear element 6 on the output shaft 5.Output shaft 5 is rotatable but can not move axially.
Wherein, the front portion of actuation gear element 6 is supported on the optical axis part of output shaft 5 through axle sleeve 7, and the rear portion is through the coupling of the matching spline portion on spline part 8 and the output shaft 5.Spline part 8 can endwisely slip with respect to matching spline portion (under the situation that adopts the screw key tooth, spline part 8 is rotating with respect to matching spline portion in axial sliding simultaneously), to realize moving axially of output shaft 5.This axial motion is to realize through the shift fork 9 of control mechanism.The middle part of shift fork 9 can be around a pivots, and the outer end of shift fork 9 can be by control mechanism roughly along the axial push-and-pull of output shaft 5, and the inner of shift fork 9 is held on actuation gear element 6.Through the control mechanism outer end of push-and-pull shift fork 9 vertically; So that shift fork is around said pivots; The inner of shift fork drives output shaft 5 and moves axially (spline part 8 endwisely slips with respect to matching spline portion), so that engagement of the gear ring on actuation gear element 6 and the engine flywheel and disengaging.
Actuation gear element 6 used among Fig. 1 has been shown among Fig. 2; It is the Structural Hardware of one, comprises the shift fork drive portion 12 at anterior gear part 11 and rear portion, wherein; Gear part 11 be used for engine flywheel on gear ring engagement, shift fork drive portion 12 is provided with the draw-in groove of the inner that is used to hold shift fork 9.
According to the structure shown in Fig. 2, actuation gear element 6 is formed with the gear part and the shift fork drive portion of one each other, and this makes the weight of actuation gear element increase.Simultaneously, the weight increase of teeth parts 6 causes the load of the electromagnetic coil in the control mechanism to increase.
In addition, spline part 8 is formed in the rear portion of actuation gear element 6, promptly is arranged in the shift fork drive portion, and near the ear end face of actuation gear element.Therefore, when shift fork 9 drive actuation gear elements 6 moved forward, a part will be exposed by the matching spline portion on the output shaft 5, and this makes that matching spline portion this part (especially going up the lubricating grease on it) made dirty easily.
In addition, because whole actuation gear element is made of metal, when the actuation gear element rotated, the inner of shift fork 9 can be by abrasion.
Therefore, hope can solve the above-mentioned variety of issue relevant with the actuation gear element that exists in the existing technology.
The model utility content
The purpose of the utility model is that the actuation gear element that is used for vehicle starter is made improvement, to eliminate or to alleviate at least some that solve in the aforementioned relevant issues that exist in the existing technology.
An aspect according to the utility model provides a kind of drive gear assemblies that is used for vehicle starter, comprising: actuation gear, and it has the endoporus of axial perforation, is formed with spline in the said endoporus; And the shift fork actuator, it has the general cylindrical shape body, and is attached to the rear end of said actuation gear through the grasping part, and said grasping part has and allows actuation gear around the central axis of the said drive gear assemblies structure with respect to the rotation of shift fork actuator; Wherein, Said shift fork actuator has the inner that is used for the shift fork of starter motor and is placed in containing space wherein, is provided with in the said containing space to cooperate with the inner of shift fork and stop said shift fork actuator around the central axis of the said drive gear assemblies backstop with respect to said shift fork rotation.
According to a kind of preferred implementation of the utility model, said grasping part is the integral part of said shift fork actuator, and said shift fork actuator is made of plastics.These plastics can be fiber reinforced plastic, for example the nylon of glass fibre enhancing.
A kind of preferred implementation according to the utility model; Said grasping part comprises on the body that is formed on said shift fork actuator at least two gripping sections of resiliently deformable diametrically; Each gripping section is formed with jaw respectively, and said jaw is hooked in the first portion of said actuation gear.
According to a kind of preferred implementation of the utility model, said grasping part also comprises leans on portion, said second portion that bears against said actuation gear by portion on the body that is formed on said shift fork actuator.
A kind of preferred implementation according to the utility model; Said actuation gear has annular protuberance and the flange that is positioned at said annular protuberance rear side; Limit annular space between said annular protuberance and the said flange; Said flange constitute said actuation gear by the said first portion of said jaw hook, what said annular protuberance constituted said actuation gear is propped up the said second portion that leans on by said by portion.
A kind of preferred implementation according to the utility model; Said shift fork actuator has the endoporus that is formed on the axial perforation in the said general cylindrical shape body; The said flange of said actuation gear is placed in the endoporus of said shift fork actuator, and forms Spielpassung between the endoporus of said flange and said shift fork actuator.
A kind of preferred implementation according to the utility model; Said shift fork actuator also has from said general cylindrical shape body radially outstanding front flange portion and back lip part; Limit the annular space of the said containing space of formation between said front flange portion and the back lip part, the both sides that the inner of said shift fork is included in the general cylindrical shape body of said shift fork actuator are placed in a pair of retaining member in the said containing space; And; Said backstop comprise that the general cylindrical shape body outside that is formed on said shift fork actuator is gone up and with said a pair of retaining member facing to a pair of flat segments, said a pair of flat segments stops said shift fork actuator to rotate with respect to said shift fork around the central axis of said drive gear assemblies through contacting with said a pair of retaining member.
According to a kind of preferred implementation of the utility model, said shift fork actuator also has the stiffening rib that outside the general cylindrical shape body, extends between said front flange portion and the back lip part.
According to a kind of preferred implementation of the utility model, said spline is formed in the rear portion of endoporus of said actuation gear, and, in the front portion of the endoporus of said actuation gear axle sleeve is housed.
According to the utility model on the other hand, a kind of vehicle starter is provided, has comprised: motor; With the driving mechanism that the output shaft of motor links to each other, the foregoing drive gear assemblies that said driving mechanism has output shaft and carried by said output shaft; And control mechanism, it controls the operation of said motor and driving mechanism.
According to the utility model, the drive gear assemblies in the vehicle starter is made up of actuation gear and the shift fork actuator that is attached to the actuation gear rear end.The shift fork actuator does not rotate with actuation gear, therefore, the inner of shift fork of can as existing technology, not wearing and tearing, thus help to prolong the working life of drive gear assemblies.Simultaneously, when actuation gear breaks down, only need to change actuation gear itself, and the shift fork actuator possibly still can use.Like this, can reduce the maintenance cost of drive gear assemblies.
In addition; Material (for example plastics) proportion of processing the shift fork actuator is lower than the metallic material of processing actuation gear; Therefore; Compare with monomer-type actuation gear element in the existing technology, the weight of the drive gear assemblies of the utility model can reduce, and the load of the electromagnetic coil in the control mechanism also can reduce.
In addition, according to the utility model, spline part is formed in the actuation gear, and the rear end of actuation gear is by attached shift fork actuator.Like this; When drive gear assemblies is moved forward by shift fork; The part that matching spline portion on the output shaft of driving mechanism exposes from actuation gear is still surrounded by the shift fork actuator; This part quilt that can prevent matching spline portion is so effectively made dirty, thereby further helps to prolong the working life of drive gear assemblies.
Description of drawings
Fig. 1 is a kind of schematic representation according to the part in the vehicle starter of existing technology.
Fig. 2 is the schematic cross sectional views of the actuation gear element that adopts among Fig. 1.
The sectional view that Fig. 3 does along its axis according to a kind of drive gear assemblies of the utility model.
Fig. 4 is the sectional view that the actuation gear in the drive gear assemblies among Fig. 3 is done along its axis.
Fig. 5 is the sectional view that the shift fork actuator in the drive gear assemblies among Fig. 3 is done along its axis.
Fig. 6 is the sectional view that the A-A direction in Fig. 5 is done.
Fig. 7 is the left view of the shift fork actuator among Fig. 5.
The schematic representation of the state when Fig. 8 is the inner combination of shift fork actuator and the shift fork among Fig. 5.
Embodiment
Some preferred implementations of the utility model are described with reference to the accompanying drawings.
Illustrated among Fig. 3 according to the drive gear assemblies in the vehicle starter of the preferred implementation of the utility model, it can be used for replacing Fig. 1, the actuation gear element 6 shown in 2.Only if point out specially, otherwise the front is applicable to down also that with reference to Fig. 1,2 pairs of described details of vehicle starter facing the utility model describes.
As shown in the figure, the drive gear assemblies of the utility model is attached to by actuation gear 20 with the mode of hook that general cylindrical shape or the ring shift fork actuator 40 at this actuation gear rear portion form.Show actuation gear 20 among Fig. 4 separately, show shift fork actuator 40 among Fig. 5-7 separately.
It may be noted that at first so-called among the application " back " is used for limiting the direction near that side of motor of vehicle starter, " preceding " is meant away from motor, near the direction of that side of gear ring on the engine flywheel.
Actuation gear 20 be used for engine flywheel on gear ring engagement.Actuation gear 20 can by metallic material for example structural steel process.The periphery of actuation gear 20 is formed with the tooth 22 of some.Said tooth can be straight-tooth or helical teeth, extends back from the front end of actuation gear 20, and ends at the annular protuberance 24 of actuation gear 20.Said annular protuberance 24 is connected in the back of said tooth 22, and the tooth top diameter of a circle that limits greater than the tooth top in these teeth 22 of its external diameter.
Annular protuberance 24 has front surface 24a and the surperficial 24b in back.This front surface 24a is preferably the form of frusto-conical face, but also can be perpendicular to the planar annular of actuation gear central axis.The surperficial 24b in this back is preferably the planar annular perpendicular to the actuation gear central axis shown in the figure, but also can be the frusto-conical face of concave or convex.
Be formed with the cylindrical shape extension 26 that extends back in the back of annular protuberance 24, the external diameter of this cylindrical shape extension 26 is significantly less than the external diameter of annular protuberance 24, even can be less than the tip diameter of the tooth 22 of actuation gear 20.
Be formed with the outstanding flange 28 of radially outward in the rear end of cylindrical shape extension 26, between the back surperficial 24b of flange 28 and annular protuberance 24, limit the annular space 30 of 26 peripheries thus around the cylindrical shape extension.
Actuation gear 20 inside are formed with the endoporus of axial perforation, and this endoporus comprises the first anterior endoporus section 32 and the second endoporus section 34 at rear portion.Axle sleeve (sliding bearing) 7 is fixed in the first endoporus section 32, for example Fig. 3, the front portion that is positioned at the first endoporus section 32 shown in 4.This axle sleeve 7 is set on the optical axis part of output shaft of driving mechanism of starter motor.The diameter of the second endoporus section 34 is greater than the first endoporus section 32, thereby formation is towards the step 36 at rear between the two.Said output shaft can form the enlarged diameter part in optical axis part back, thereby between the two, forms the step of face forward, and this step can be by step 36 pushing and pressing, to limit the limit position that moves backward of actuation gear 20.
Spline part 8 is formed in axial at least a portion of the second endoporus section 34, be used for the enlarged diameter part that is formed on output shaft on the coupling of matching spline portion.
Shift fork actuator 40 is to be lower than the element that the material of actuation gear material is processed by proportion.Preferably, shift fork actuator 40 is made of plastics, and for example processes through injection moulding.These plastics can be highstrenghtpiston, for example fiber reinforced plastic.As a kind of preferred implementation, shift fork actuator 40 is processed by nylon, for example the nylon (nylon that contains for instance, 30 ~ 35% glass fibres) that strengthens of glass fibre.
Shown in Fig. 3,5-8, front flange portion 44 and back lip part 46 that shift fork actuator 40 has general cylindrical shape body 42 and radially gives prominence to from the end, front and back of body 42.Front flange portion 44 all is preferably the dull and stereotyped form of general toroidal perpendicular to the central axis of shift fork actuator 40 with back lip part 46, and the two has external diameter about equally, and limits annular containing space 48 between the two.
Be formed with the endoporus of axial perforation in shift fork actuator 40 inside, this endoporus comprises anterior endoporus section 50 and rear portion endoporus section 52.The internal diameter of rear portion endoporus section 52 is greater than anterior endoporus section 50.
At the front end of shift fork actuator 40, be formed with one group of gripping section 54 of projection forward.These gripping section 54 quantity are at least two, are preferably five to seven, for example six shown in the figure.These gripping section 54 preferred central axis around shift fork actuator 40 are symmetrically distributed.In cross section perpendicular to the central axis of shift fork actuator 40; Each gripping section limits an arc section; The interior perimeter surface of these gripping sections constitutes the extension forward of the interior perimeter surface of anterior endoporus section 50, the interior perimeter surface that the internal surface of these gripping sections limits and the interior perimeter surface equal diameters of anterior endoporus section 50.At the front end of each gripping section 54, be formed with the jaw 56 that extends radially inwardly respectively.
Gripping section 54 preferably has the elastic deformability diametrically.For this reason, can so that the radial thickness of gripping section 54 less than body 42.In addition, be formed with axially extended slit 64 between the adjacent gripping section 54.
The general cylindrical shape that on the front surface of front flange portion 44, is formed with projection is forward propped up and is leaned on section 58, and said is leaned on section 58 round said one group of gripping section 54, and axially the projection distance greater than these gripping sections 54.Said the flange 60 that can form radially outward and/or extend internally by the front end of section 58.
The periphery of lip part 46 is formed with axially the ring section 62 of projection backward in the back.When drive gear assemblies moved backward, said ring section 62 and/or back lip part 46 can be connected on the corresponding site of starter housing, to help stoping drive gear assemblies further to move backward.
For shift fork actuator 40 is combined on the actuation gear 20; The rear end of the front end of shift fork actuator 40 and actuation gear 20 is pushed toward each other; So that the flange 28 of actuation gear 20 touches jaw 56; And through the radially outer resiliently deformable of jaw 56 they are outwards strutted, thereby flange 28 gets in the anterior endoporus section 50, and jaw 56 gets in the annular space 30 of shift fork actuator 40.Like this, jaw 56 is hooked in flange 28, props up and leans on section 58 (flange 60) to push against the back surperficial 24b in annular protuberance 24, thereby the mode of shift fork actuator 40 with hook is connected in the rear portion of actuation gear 20 and forms drive gear assemblies, and is as shown in Figure 3.Prop up and lean on section 58 can prevent that shift fork actuator 40 from moving forward with respect to actuation gear 20 vertically.The central axis conllinear of shift fork actuator 40 and actuation gear 20, thus limit the central axis of drive gear assemblies.The elastic deformability who is appreciated that jaw 56 also makes shift fork actuator 40 to pull down from actuation gear 20.
Under the assembled state of shift fork actuator 40 and actuation gear 20, allow between the two to rotate relatively around the central axis of drive gear assemblies.For this reason, form Spielpassung between the outer surface of the interior perimeter surface of the internal surface of each gripping section 54 of shift fork actuator 40 (or internal surface of anterior endoporus section 50) qualification and flange 28.
Because the interior perimeter surface that the internal surface of each gripping section 54 limits and the interior perimeter surface of anterior endoporus section 50 limit same inner peripheral surface, so this inner peripheral surface need process high dimension precision.In the endoporus of shift fork actuator 40, tell anterior endoporus section 50 and the rear portion endoporus section 52 of diameter greater than anterior endoporus section 50, just needn't be along the whole axial length of anterior endoporus section 50 with the high-precision processing endoporus, thus can reduce manufacture cost.
Certainly, the endoporus of shift fork actuator 40 also can only have single internal diameter, and does not tell front and rear part endoporus section.
The diameter of the interior bore portion that cooperates with flange 28 of shift fork actuator 40 (or anterior endoporus section 50) is preferably 15 to 20mm.
In addition; In order to allow the relative rotation between shift fork actuator 40 and the actuation gear 20; Static state in drive gear assemblies; Be the state that drive gear assemblies is not stirred by the shift fork of starter motor control mechanism, jaw 56 should be enough little with a thrust of leaning on section 58 (flange 60) to apply to the back surperficial 24b of flange 28 and annular protuberance 24, even can be zero.
Be appreciated that jaw 56 and lean on section 58 to constitute shift fork actuator 40 attached detachable grasping part on actuation gear 20.Be appreciated that the grasping part of other form,, also can be used for shift fork actuator 40 is connected to actuation gear 20 no matter be dismountable or nonvolatil.
For example; As a kind of embodiments possible; Itself will be enough to shift fork actuator 40 is connected under the situation of actuation gear 20 at jaw 56; Promptly guarantee to have between the two enough join strengths and prevent that the two from moving axially relatively (perhaps allowing the two to move axially relatively a bit of distance), prop up and lean on section 58 to omit.
In addition, in the example in front, the grasping part is the integral part of shift fork actuator 40.Yet; As another kind of embodiments possible; The grasping part can be the independent component of opening in 40 minutes with the shift fork actuator, and it can be grasped between the rear end of front end and actuation gear 20 of shift fork actuator 40, and the grasping part identical functions of realization and aforementioned one.
As shown in Figure 6, and with reference to Fig. 7,8, on the periphery of the general cylindrical shape body 42 of shift fork actuator 40, be formed with radially relative one or many to flat segments 66.Between front flange portion 44 that said flat segments 66 extends and the back lip part 46, be parallel to the central axis of shift fork actuator 40.The two ends of each flat segments 66 can stretch out a bit of from the periphery of body 42, to form evagination section 68.Every pair of flat segments 66 has rightabout toward each other flat outer surface 66a.
In addition, on the periphery of the general cylindrical shape body 42 of shift fork actuator 40, also be formed with radially relative one or many to stiffening rib 70.Between front flange portion 44 that said stiffening rib 70 extends and the back lip part 46, be used to improve the intensity of shift fork actuator 40.On the circumferencial direction of general cylindrical shape body 42, stiffening rib 70 can be located at the position between the flat segments 66.
Shift fork actuator 40 is used for being driven and moving forward and backward by the shift fork of starter motor control mechanism.The assembled relation of shift fork 9 with shift fork actuator 40 has been shown among Fig. 8.As shown in the figure, the inner of shift fork 9 has a pair of 9a of branch, and the end of each 9a of branch has substantial cylindrical retaining member 9b, for example pin or roller.This a pair of retaining member 9b extends internally from the end of the said a pair of 9a of branch.The 9a of branch and the retaining member 9b of both sides are symmetrical set.
Said a pair of retaining member 9b inserts in the annular containing space 48 of shift fork actuator 40, so that each retaining member 9b is roughly facing to the flat outer surface 66a of the corresponding flat segments 66 of shift fork actuator 40.
The diameter of each retaining member 9b is equal to or slightly less than the axial width of annular containing space 48, and the distance between the radial inner end of a pair of retaining member 9b equals or is slightly larger than the distance between the flat outer surface 66a of corresponding a pair of flat segments 66.Like this, under assembled state shown in Figure 8, retaining member 9b vertically and/or radially can not move or only can move very little distance in annular containing space 48 with respect to shift fork actuator 40.Like this, when actuation gear 20 rotation,, can stop shift fork actuator 40 to rotate with actuation gear 20 through contacting between a pair of retaining member 9b and the corresponding a pair of flat segments 66.
Can find out that flat segments 66 has constituted the backstop that stops shift fork actuator 40 to rotate with actuation gear 20 through cooperating with the inner (retaining member 9b) of shift fork 9.Yet, be appreciated that the backstop of other form that can realize identical function also can adopt.
For example, the annular containing space 48 that between front flange portion 44 and back lip part 46, limits in the previous examples can be replaced by two radially relative sockets on the general cylindrical shape body 42, is used for a pair of retaining member of shift fork is inserted and is limited to wherein.In this case, socket itself has the function of aforementioned backstop simultaneously.
When starter motor was operated, actuation gear 20 was being driven by output shaft 5 and is rotating, and shift fork actuator 40 receive shift fork 9 constraint and thereupon the rotation.Like this, have relative rotary motion between actuation gear 20 and the shift fork actuator 40, and this relative rotary motion can produce frictional force in the contact position between the two.The size matching relationship of the contact position through suitably setting actuation gear 20 and shift fork actuator 40 can limit this frictional force within the acceptable range.
If necessary, the frictional force for the contact position that suppresses shift fork actuator 40 and actuation gear 20 can apply oiling agent in the place, contact position between the two.Perhaps, the plastics (being the position that contacts with actuation gear 20 at it at least) of processing shift fork actuator 40 can be the self-lubricating type plastics.
According to the utility model, the drive gear assemblies in the vehicle starter is made up of actuation gear and the shift fork actuator that is attached to the actuation gear rear end.The material proportion of shift fork actuator is lower than actuation gear; Therefore; Compare with monomer-type actuation gear element in the existing technology; Under the situation with same axial length, the weight of the drive gear assemblies of the utility model can significantly reduce, and the load of the electromagnetic coil in the control mechanism also can correspondingly reduce.
In addition, according to the utility model, the shift fork actuator does not rotate with actuation gear, promptly can not rotate with respect to shift fork, therefore, the inner of the shift fork that can as existing technology, not wear and tear.
In addition, according to the utility model, spline part is formed in the actuation gear, and the rear end of actuation gear is by attached shift fork actuator.Like this; When drive gear assemblies is moved forward by shift fork; The part that matching spline portion on the output shaft of driving mechanism exposes from actuation gear is still surrounded by the shift fork actuator, this part (especially the going up the lubricating grease on it) that can prevent matching spline portion so effectively by external substance for example dust make dirty.Like this, can prolong the working life of drive gear assemblies.
In addition, according to the utility model, collapse tooth or other fault and when needing to change, only need to change actuation gear itself, and the shift fork actuator possibly can use still at actuation gear.Like this, can reduce the maintenance cost of drive gear assemblies.
Though described the utility model with reference to some concrete mode of executions here, these mode of executions only are that the mode with example provides, and the scope of the utility model are not constituted restriction.Claim and the scope that is equal to replacement thereof are intended to contain all that and drop on the utility model spirit and scope interior modification, replacement and variation that these mode of executions are made.

Claims (12)

1. drive gear assemblies that is used for vehicle starter comprises:
Actuation gear, it has the endoporus of axial perforation, is formed with spline in the said endoporus; And
The shift fork actuator, it has the general cylindrical shape body, and is attached to the rear end of said actuation gear through the grasping part, and said grasping part has and allows actuation gear around the central axis of the said drive gear assemblies structure with respect to the rotation of shift fork actuator;
It is characterized in that; Said shift fork actuator has the inner that is used for the shift fork of starter motor and is placed in containing space wherein, is provided with in the said containing space to cooperate with the inner of shift fork and stop said shift fork actuator around the central axis of the said drive gear assemblies backstop with respect to said shift fork rotation.
2. drive gear assemblies as claimed in claim 1 is characterized in that, said grasping part is the integral part of said shift fork actuator, and said shift fork actuator is made of plastics.
3. drive gear assemblies as claimed in claim 2 is characterized in that said plastics are fiber reinforced plastic.
4. drive gear assemblies as claimed in claim 2 is characterized in that, said plastics are the nylon that glass fibre strengthens.
5. drive gear assemblies as claimed in claim 2; It is characterized in that; Said grasping part comprises on the body that is formed on said shift fork actuator at least two gripping sections of resiliently deformable diametrically; Each gripping section is formed with jaw respectively, and said jaw is hooked in the first portion of said actuation gear.
6. drive gear assemblies as claimed in claim 5 is characterized in that, said grasping part also comprises leans on portion, said second portion that bears against said actuation gear by portion on the body that is formed on said shift fork actuator.
7. drive gear assemblies as claimed in claim 6; It is characterized in that; Said actuation gear has annular protuberance and the flange that is positioned at said annular protuberance rear side; Limit annular space between said annular protuberance and the said flange, said flange constitute said actuation gear by the said first portion of said jaw hook, what said annular protuberance constituted said actuation gear is propped up the said second portion that leans on by said by portion.
8. drive gear assemblies as claimed in claim 7; It is characterized in that; Said shift fork actuator has the endoporus that is formed on the axial perforation in the said general cylindrical shape body; The said flange of said actuation gear is placed in the endoporus of said shift fork actuator, and forms Spielpassung between the endoporus of said flange and said shift fork actuator.
9. like each described drive gear assemblies in the claim 1 to 8; It is characterized in that; Said shift fork actuator also has from said general cylindrical shape body radially outstanding front flange portion and back lip part; Limit the annular space of the said containing space of formation between said front flange portion and the back lip part, the both sides that the inner of said shift fork is included in the general cylindrical shape body of said shift fork actuator are placed in a pair of retaining member in the said containing space; And
Said backstop comprise that the general cylindrical shape body outside that is formed on said shift fork actuator is gone up and with said a pair of retaining member facing to a pair of flat segments, said a pair of flat segments stops said shift fork actuator to rotate with respect to said shift fork around the central axis of said drive gear assemblies through contacting with said a pair of retaining member.
10. drive gear assemblies as claimed in claim 9 is characterized in that, said shift fork actuator also has the stiffening rib that outside the general cylindrical shape body, extends between said front flange portion and the back lip part.
11., it is characterized in that said spline is formed in the rear portion of endoporus of said actuation gear like each described drive gear assemblies in the claim 1 to 8, and, in the front portion of the endoporus of said actuation gear axle sleeve is housed.
12. a vehicle starter comprises:
Motor;
With the driving mechanism that the output shaft of motor links to each other, the drive gear assemblies that said driving mechanism has output shaft and carried by said output shaft; And
Control mechanism, it controls the operation of said motor and driving mechanism;
It is characterized in that said drive gear assemblies is like each described drive gear assemblies in the claim 1 to 11.
CN 201220236427 2012-05-24 2012-05-24 Automobile starter and drive gear assembly thereof Expired - Lifetime CN202579001U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423058A (en) * 2012-05-24 2013-12-04 博世汽车部件(长沙)有限公司 Vehicle starter and drive gear assembly thereof
CN105492759A (en) * 2013-09-09 2016-04-13 法雷奥电机设备公司 Starter drive assembly for an electric starter comprising a manoeuvring ring rigidly connected to a pinion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423058A (en) * 2012-05-24 2013-12-04 博世汽车部件(长沙)有限公司 Vehicle starter and drive gear assembly thereof
CN103423058B (en) * 2012-05-24 2017-02-08 博世汽车部件(长沙)有限公司 Vehicle starter and drive gear assembly thereof
CN105492759A (en) * 2013-09-09 2016-04-13 法雷奥电机设备公司 Starter drive assembly for an electric starter comprising a manoeuvring ring rigidly connected to a pinion
CN105492759B (en) * 2013-09-09 2018-02-09 法雷奥电机设备公司 The starter for electric starter motor including the control loops integral with little gear

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Granted publication date: 20121205

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