CN103026052B - Launcher for internal combustion engine - Google Patents
Launcher for internal combustion engine Download PDFInfo
- Publication number
- CN103026052B CN103026052B CN201180036817.9A CN201180036817A CN103026052B CN 103026052 B CN103026052 B CN 103026052B CN 201180036817 A CN201180036817 A CN 201180036817A CN 103026052 B CN103026052 B CN 103026052B
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- CN
- China
- Prior art keywords
- little gear
- hollow axle
- gear handle
- relative
- launcher
- 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.)
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Abstract
The present invention relates to a kind of starter for internal combustion engine (1), this starter is configured to have the hollow axle (5) being axially movable relative to the little gear handle (8) of little gear (3), this hollow axle is flexibly loaded onto the stop dog position relative to little gear handle (8), on this stop dog position, radially can expand and be arranged to the stop element (31) relative to little gear handle (8) engages relatively with centrifugal force and be secured at its bonding station relative to little gear handle (8) by hollow axle (5).
Description
Technical field
The present invention relates to a kind of launcher for internal combustion engine, there is little gear, hollow axle
And be inserted in hollow axle, relative to hollow axle transmission torque and can vertically move little
Gear handle, what this little gear handle was in reverse to that described little gear handle is inserted in described hollow axle inserts
Enter direction to be elastically supported and be resisted against on hollow axle, and little gear handle be inserted into hollow
The reverse shift motion of direction of insertion in axle is restricted by stop device, and backstop fills
Put and there is the annular being covered by hollow axle, expanding and be contained in radial elastic little gear handle
Stop element in groove.The invention still further relates to a kind of internal combustion engine equipped with this launcher.
Background technology
By the known a kind of launcher for internal combustion engine of DE 198 02 418A1, interior at this
In combustion engine, the starter pinion in flywheel ring gear to be engaged is rotatable by its little gear handle
And be axially displaceably bearing on starter shaft.Being driven through and direction of rotation of little gear
The free wheel device provided worked relatively realizes, and the outer shroud of this free wheel device provided is relative to starter
Axle be can not rotate against and its internal ring (as hollow axle) the most relative
In little gear handle drive connection.Little gear engagement direction on be elastically supported be resisted against hollow
On axle, this hollow axle is run through by little gear handle, and little gear handle is in reverse to engage direction and then anti-
Xiang Yuqi inserts the direction of hollow axle and is supported with being limited by backstop relative to hollow axle.For this
The stop device of design is made up of stop element dish type, elastic, and this stop element is in footpath
It is presented axially between both in the case of extending to little gear handle and hollow axle.
Additionally, the most unpub German patent application (application number: 102009060957.1)
Having had been proposed that a kind of have hollow axle and the launcher of little gear for internal combustion engine, this is little
Gear has little gear handle, and this little gear handle has the handle of the moving direction extension along little gear
Axis and being inserted in hollow axle, its medium and small gear handle moving axially relative to hollow axle
Property limited by stop element, this stop element hollow axle middle ground by can by pressure
The lining inserted in hollow axle is coordinated to be protected against unallowed expansion.
Summary of the invention
It is an object of the invention to, it is achieved simplify the launcher according to the present invention further,
And it is functional not affect it.
Launcher according to the present invention is achieved in: stop element in stopper area with really
Protect it to be surrounded by hollow axle relative to the radial spacing of the radial engagement position of little gear handle, empty
Mandrel has the annular space surrounding stop element, and this annular space is along the insertion of little gear handle
Direction starts to extend diametrically corresponding to the region of stop dog position from it..
Present invention utilize the fact that internal combustion engine drives reached to turn by launcher
Speed is well below the working speed of internal combustion engine.Therefore, internal combustion engine is being driven by launcher
Time, the rotating speed of little gear less than when engine starting and little gear remove during, also
It it is exactly the rotating speed reached when little gear is driven by internal combustion engine with pulling.
Being elastically supported about little gear and be resisted against on hollow axle, this meaning is, along moving into
Direction is flexibly supported when adjusting little gear and correspondingly loaded little gear by hollow axle
" compressive state ", but make little gear remove and make hollow axle relative to little gear with phase
With direction move time exist one " stretched condition ", about realize at this by being moved
The hollow axle that opening apparatus loads moves little gear, described " stretched condition " in the way of drive
With a stop device as condition, this stop device limits anti-relative to little gear of hollow axle
Shift motion to the direction of insertion being inserted in hollow axle in described little gear handle.
According to the present invention, this is filled by the backstop at least worked under stretched condition
Put realization, wherein according to elaboration above, remove when engine starting and at little gear
Period, before the drive connection between little gear and the drive shaft of internal combustion engine is interrupted, reach
Described stretched condition.
Therefore, according to The present invention gives a kind of stop device, by this stop device at least
When little gear rotational speed is higher than the rotating speed of launcher, particularly it is significantly larger than launcher
During rotating speed, by stop element that covered by hollow axle, expansible, more properly succeed in reaching an agreement
Cross in stopper area and the most only in stopper area this stop element to guarantee it
Surrounded by hollow axle relative to the radial spacing of the radial engagement position of little gear handle, it is achieved
To the stop dog position ensured.Thus provide a kind of stop device, its if desired with rotating speed phase
Work with closing, the most only work in the high district part of the range of speeds, at described turn
The high district part of speed scope is likely to occur or it would appear that a kind of of stop element expands, by
In this expansion of stop element, realize especially by the radial engagement relative to little gear handle
Stop element may unclamp relative to the axial restraint of little gear handle.
In the preferred design of the present invention, hollow axle has the described stop element of encirclement
Annular space, this annular space starts diametrically corresponding to the region of stop dog position from it
Extension.Thus, in conjunction with little gear handle relative to the Axial mobility of hollow axle, can realize by
This hollow axle moves to a certain degree from stop dog position towards the direction of little gear so that the most right
Position in the axial restraint realized by the radial engagement relative to little gear of stop element
Put, it is also possible to assemble this stop element simply.
Especially, it was demonstrated that advantageously, being stepwise formed this annular space, this enters one
Step makes manufacture be more prone to, because hollow axle, annular space and its corresponding radially expansion
Territory, exhibition section can manufacture the most with one heart.
It is in reverse to little gear handle and supports favourable to the axial elasticity of the direction of insertion in hollow axle
Ground is realized by spiral spring device, and it is circumferentially arranged relative to little gear handle, and
Radial outside is surrounded by the annular sleeve of hollow axle, and this hollow axle is axially displaceably and transmission turns
It is connected with little gear handle square.Confirm that advantageously hollow axle is relative to the shifting of little gear handle
Dynamic stroke is limited by annular sleeve, and namely this annular sleeve forms one axially approx
Backstop, limits described " compressive state " when abutting on little gear also by this axial stop,
Because the stop element limiting described " stretched condition " is positioned at it and guarantees radial engagement position
Outside annular space.
Make for this stop element confirms advantageously, is designed by this stop element
For snap ring, this snap ring is contained in the cannelure of little gear handle.
Therefore, by the present invention, especially for the starting dress of the internal combustion engine starting described type
Putting and provide a kind of stop device, it has the stop element of collar-type, and in this backstop
In device on the hollow axle stop dog position relative to little gear handle, formed by hollow axle and use
In the radial direction backstop of collar, this radial direction backstop prevents collar from expanding relatively with rotating speed.
The present invention further relates to a kind of internal combustion engine especially, and it is equipped with designing according to the present invention
Launcher.
Accompanying drawing explanation
Other details and the feature of the present invention are given by claims, specification and drawings.
In accompanying drawing:
Fig. 1 show in a schematic a part for the launcher for internal combustion engine,
Fig. 2 shows the section view according to the line II-II through Fig. 1 view the most simplifiedly
Figure,
Fig. 3 and Fig. 4 shows the simplification zoomed-in view of part A in Fig. 2, wherein shows
Gone out have in annular space annular, the stop device of distensible stop element,
This annular space in terms of its diameter dimension according in the view of Fig. 3 with unexpanded backstop
Element adapts, and stops distensible with free space radially according in the view of Fig. 4
Gear element surrounds.
Detailed description of the invention
Show with side view in FIG and include its most important element according to the present invention
Launcher, start motor not shown in it and only schematically shown by axis 2
Go out the drive shaft extended from this starting motor of launcher.Little gear 3 and freedom
Wheel apparatus 4 is concentrically located in by the symbolic drive shaft represented of axis 2, and freewheel fills
Put 4 and include the hollow axle 5 as internal ring and outer shroud 6, wherein stop roller 7 be positioned at as
Between hollow axle 5 and the outer shroud 6 of ring.Hollow axle 5 encases a section of little gear handle 8,
This little gear handle 8 extend on the axial extension relative to little gear 3 and relative to
Little gear 3 is one.Hollow axle 5 is a ring axially towards the end of little gear 3
Shape set, this annular sleeve circumferentially defines an annular space 10 relative to little gear handle 8,
The spring 11 of extension, particularly helical spring between little gear 3 and hollow axle 5 vertically
Or the spring of wavy spring form is arranged in this annular space.Relative to little gear handle 8, empty
Mandrel 5 by tooth 12 to be supported by the way of being axially movable and transmitting torque.
The outer shroud 6 of free wheel device provided 4 immediately preceding its cover stop roller 7 part after
On the side of the least gear 3, transition is annular wall 13, after this annular wall is
Axially extended cervical region 14, this cervical region passes through internal tooth 15 to be axially movable and to transmit torque
Mode is in drive shaft unshowned, that represented by axis 2 symbol and engages.
As shown in Figure 1 schematically, realize in the way of relative to cervical region 14 encirclement
Remove device 16 firmly grasping outer shroud 6, wherein, remove device 16 by removing shift fork 17
Being joined in cannelure 18, this cannelure is limited by annular disk 19,20.These annular disks
Mutually brace against at radially inner side, the most directed on cervical region 14, and position
Between the helical spring 21 circumferentially arranged relative to cervical region 14 and baffle ring 22, should be only
Baffle ring locks relative to cervical region 14 position regularly especially as snap ring.Helical spring 21
On the one hand supported axially with respect to cervical region 14 by baffle ring 22, by annular disk 19,
20 clamp with abutting vertically, and are on the other hand resisted against in annular wall 13.Therefore,
Remove device 16 and bear against freedom by its shift fork 17 flexibly along the direction of axis 2
On the outer shroud 6 of wheel apparatus 4, this outer shroud and annular wall 13 are opposed to be covered by dihedral ring 23.
Dihedral ring 23 is joined in the cannelure 25 of hollow axle 5 with its limit 24 radially, thus should
Hollow axle is being axially retained between limit 24 and annular wall 13 radially, fills as freewheel
The part putting 4 can move along little gear handle 8 by removing device 16.
If removing device 16 by what the axis of oscillation 26 can fixed around position swung
(in the case of swinging towards the direction of arrow 27) makes to remove shift fork 17 towards little gear 3
Direction and towards the tool in the shift motion being positioned at little gear 3 of unshowned internal combustion engine
The direction having the flywheel 28 of gear ring 29 is moved, then only at little gear 3 and gear ring 29
When tooth is on teeth groove, little gear 3 is only possible to directly engage with gear ring 29.If not this
Situation, then be in the spiral bullet in the axially support that little gear 3 is resisted against on hollow axle 5
Spring 11 makes little gear 3 can be axially moveable relative to hollow axle 5, until it reaches little gear
3 relative to the stop dog position of the annular sleeve 9 of hollow axle 5.Moved axially by with lower section by this
Formula obtains the rotation of little gear 3, i.e. when free wheel device provided 4 moves towards little gear 3,
The little gear 3 being connected with this hollow axle with making free wheel device provided 4, hollow axle 5 and transmission torque
Rotate, because free wheel device provided 4 exists with respect to the symbolic drive shaft represented of axis 2
In the region of its cervical region 14 by be configured to the internal tooth 15 of helical teeth with transmitting torque relative to
Drive shaft is fixed.
If reaching the tooth of little gear 3 and gear ring 29 position on teeth groove, then little tooth
Wheel 3 may be engaged in gear ring 1.On the one hand, be in little gear 3 and gear ring 29
During tooth/tooth position and by launcher start internal combustion engine time obtain by annular sleeve 9
To the support of little gear 3 correspondingly, obtain " compressive state " of helical spring 11, another
Aspect is in reverse to obtain " stretched condition " when the direction of arrow 27 swings removing shift fork 17.
At this in order to hollow axle 5 not pulled out and maintained desired if desired from little gear handle 8
The pretension degree of spring 11, limit hollow axle 5 relative to little tooth by stop device 30
Wheel shank 8, to the shift motion away from little gear 3 side, namely inserts along little gear handle 8
The shift motion of the direction of insertion 35 in hollow axle.
Stop device 30 includes the stop element 31 of annular, and this stop element has towards sky
The side bearing-surface 32 of the annular space 33 in mandrel 5, this annular space has covering backstop
The perisporium 34 of element 31.To perisporium 34 relative to annular, distensible stop element 31
The radial distance of (it is such as configured to snap ring) selects so that at stop element 31
When being positioned in annular space 33, stop element will not cause the stop element 31 may be from it
The radial dilatation disengaged relative to the radial direction position of engagement of little gear handle 8.In this radially engagement
On position, stop element 31 is specifically located at by cannelure 36 structure in little gear handle 8
In the recess become.
Annular space 33 advantageously has corresponding with the thickness of annular stop element 31 deep
Degree, and inserting the direction of insertion transition of hollow axle 5 axially along little gear handle 8 in footpath
The region 37 extended up, it is the least that this region is preferably constructed to towards hollow axle 5
The open ended annular region of gear 3, its radial dimension is more than in order to be embedded into cannelure
The periphery of the stop element 31 of the annular being expanded in 36.
In the design of the launcher 1 according to the present invention, this of stop device 30
Plant make and achieve the guarantee of the selection of speed to stop device 30.
It is, when starting internal combustion engine by launcher, often to produce ratio to this starting point
Rotating speed much smaller during internal combustion engine.In the case of corresponding selection limit rotating speed,
But need the most at higher rotational speeds to worry particularly to be configured to snap ring or split circlip only
The expansion relevant to rotating speed of gear element 31, and correspondingly for the merit of launcher
Can be sufficient that, only prevent the expansion relevant to rotating speed of stop element 31 at high speed,
Such as when free wheel device provided 4 lost efficacy, or such as when in starting process due to internal-combustion engine rotational speed
Quickly improve and reach to cause stop element in the case of end for little gear 3
During the rotating speed that 31 occur unallowed expansion, after some time it is possible to reach described high rotating speed.
The premise of this situation is, need to extend axially through stop device 30 and guarantee " to uphold shape
State ", according to the present invention, this is directly accomplished by, i.e. stop element 31 is at it
Corresponding with " stretched condition " axial location relative to hollow axle 5 with guarantee relative to
The radial spacing of the radial engagement position of little gear handle 8 is directly encased by hollow axle 5.
Relatively the unallowed big radial direction preventing annular stop element 31 is expanded with rotating speed
This simplest form of the structure of the stop device 30 that Zhang Jinhang limits not only makes letter especially
Single and construct stop device 30 be possibly realized without any attachment device, and by by backstop
The annular that element 31 is upheld from the radial direction of limit stop element 31 " stretched condition " is empty
Between 33 move axially into radial expansion under " compressive state ", axially immediately preceding
Region 37 after annular space 33, provides particularly preferred premise for simple assembling.Only
By hollow axle 5 relative to little gear handle 8 from hollow axle 5 corresponding to " stretched condition "
Position to the movement of " compressive state ", can realize from the rigging position of stop element 31 to
The transition of the fixed position of stop element.
Claims (3)
1., for a launcher for internal combustion engine, there is little gear (3), hollow axle (5)
And be inserted in described hollow axle (5), transmit torque relative to described hollow axle (5)
And the little gear handle (8) that can vertically move, this little gear handle is in reverse to described little gear handle
The direction of insertion (35) being inserted in described hollow axle (5) be elastically supported be resisted against described
On hollow axle (5), and described little gear handle be inserted in described hollow axle (5)
The reverse shift motion of direction of insertion (35) be restricted by stop device (30),
Described stop device (30) has by described hollow axle (5) covering, can expand on radial elastic ground
And be contained in the stop element (31) in the cannelure (36) of little gear handle (8),
It is characterized in that, described stop element (31) in stopper area with guarantee its relative to
The radial spacing of the radial engagement position of described little gear handle (8) is by described hollow axle (5)
Surrounding, described hollow axle (5) has the annular space (33) surrounding described stop element (31),
This annular space along the direction of insertion (35) of described little gear handle (8) from it corresponding to backstop
The region of position starts to extend diametrically.
2. according to the launcher described in claim 1, it is characterised in that described backstop unit
Part (31) is snap ring.
3. according to the launcher described in claim 1 or 2, it is characterised in that described ring
Shape space (33) is configured to surround described stopping in the way of limiting backstop ringwise from it
The region of gear element (31) starts the most stepped extension.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010038444.5A DE102010038444B4 (en) | 2010-07-27 | 2010-07-27 | Starting device for an internal combustion engine |
| DE102010038444.5 | 2010-07-27 | ||
| PCT/EP2011/062697 WO2012019900A1 (en) | 2010-07-27 | 2011-07-25 | Starting device for an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103026052A CN103026052A (en) | 2013-04-03 |
| CN103026052B true CN103026052B (en) | 2016-11-30 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2481248A (en) * | 1948-05-20 | 1949-09-06 | Gen Motors Corp | Engine starting apparatus |
| DE2031259A1 (en) * | 1969-06-24 | 1971-01-07 | Duceilier et Cie, Paris | Electric starter |
| DE19802418A1 (en) * | 1997-02-06 | 1998-08-13 | Valeo Equip Electr Moteur | Motor vehicle engine starter motor |
| CN2931834Y (en) * | 2006-06-13 | 2007-08-08 | 锦州汉拿电机有限公司 | Starting gear locating structure of starter |
| CN201027841Y (en) * | 2007-05-16 | 2008-02-27 | 陈玉栋 | Single-stage flywheel speed-transmitter |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2481248A (en) * | 1948-05-20 | 1949-09-06 | Gen Motors Corp | Engine starting apparatus |
| DE2031259A1 (en) * | 1969-06-24 | 1971-01-07 | Duceilier et Cie, Paris | Electric starter |
| DE19802418A1 (en) * | 1997-02-06 | 1998-08-13 | Valeo Equip Electr Moteur | Motor vehicle engine starter motor |
| CN2931834Y (en) * | 2006-06-13 | 2007-08-08 | 锦州汉拿电机有限公司 | Starting gear locating structure of starter |
| CN201027841Y (en) * | 2007-05-16 | 2008-02-27 | 陈玉栋 | Single-stage flywheel speed-transmitter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180205 Address after: Stuttgart, Germany Patentee after: SEG Automotive Germany GmbH Address before: Stuttgart, Germany Patentee before: ROBERT BOSCH GmbH |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 |