CN207454156U - A kind of isolator assembly - Google Patents
A kind of isolator assembly Download PDFInfo
- Publication number
- CN207454156U CN207454156U CN201721268424.1U CN201721268424U CN207454156U CN 207454156 U CN207454156 U CN 207454156U CN 201721268424 U CN201721268424 U CN 201721268424U CN 207454156 U CN207454156 U CN 207454156U
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- CN
- China
- Prior art keywords
- sun gear
- spline
- spline housing
- splined shaft
- isolator
- 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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- 230000008859 change Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000641 cold extrusion Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
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- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 230000008450 motivation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model is related to auto parts fields, are specifically a kind of isolator assembly.Including splined shaft and the reduction gearing being sequentially arranged on splined shaft, spline housing, sun gear, drive gear and clamp spring set, spline housing one end is equipped with cavity, the other end is equipped with internal thread spline, splined shaft is equipped with the outer spiral spline to match with internal thread spline, sun gear one side is stretched into the cavity of spline housing, opposite side is fixedly connected with drive gear, sun gear stretches on one end of spline housing cavity and is set with skeleton, skeleton is equipped with circumferential equally distributed locating slot, eccentric needle roller and compression spring are respectively arranged in each locating slot, return spring is equipped between drive gear and clamp spring set.Isolator assembly provided by the utility model can change the direction of rotation of isolator, without another Kai Xinmo by changing assembly method, cost can be reduced, is conducive to produce in enormous quantities, and fork controls need not be used, there is no the problem of shift fork abrasion, more stablize, the cost of starter is lower.
Description
Technical field
The utility model is related to auto parts field, in particular to a kind of isolator assembly.
Background technology
Isolator be one kind in engine starting process with the matching used critical piece of starter, starting up the car
When, starter drives automobile engine flywheel to rotate by isolator, realizes the startup of engine.When engine is activated
After, isolator departs from automatically with engine, prevents engine power back transfer to starter.
Existing isolator, a kind of list of automobile starter as disclosed in the Chinese patent of Publication No. CN201650542
To device device, including drive shaft, splined shaft and spline housing, the middle part of splined shaft is equipped with outer spiral spline, and the head of drive shaft is set
There is drive gear, the afterbody of the drive shaft is fixed in the head of the spline housing, is opened up on the inner wall on the head of spline housing
There are several equally distributed wedge grooves, be respectively provided with roller and spring in each wedge groove, one end of the spring is butted on
On the wedge groove, the other end of the spring by the roller top pressure between the wedge groove and the drive shaft, the flower
The inner wall of the afterbody of key set is equipped with the matched internal thread spline of outer spiral spline with the splined shaft, the splined shaft
One end can be stretched into the receiving hole of the drive shaft, and the other end of the splined shaft is additionally provided with subtracting close to the outer spiral spline
Fast gear is additionally provided with fork slot on the outer circumference surface of the spline housing.
Due to the difference of vehicular manufacturer, the design and vehicle accepted standard of vehicle are started there are certain difference
The direction of rotation of machine output shaft and the direction of rotation of engine flywheel are also not exactly the same, and the isolator in said program is in flower
Wedge groove is set in key set, thus secures the direction of rotation of isolator, the isolator opposite if necessary to manufacture direction of rotation
New spline mold will be separately opened, and then increases the cost of production；And during said program work, starter needs to set shift fork
Spline housing is back and forth stirred by mechanism, and starter is complicated, of high cost, and after long-time service, shift fork and spline housing are contacted with shift fork
Part it is easy to wear, cause job insecurity.
Utility model content
The utility model is intended to provide a kind of isolator assembly, can realize isolator rotation side by changing assembly sequency
To adjusting, solve the problems, such as to change cost increase caused by isolator direction of rotation.
In order to solve the above-mentioned technical problem, this patent provides following basic technology scheme：
A kind of isolator assembly including splined shaft, is equipped with spline housing and sun gear, spline housing one successively on the splined shaft
End is equipped with cavity, and the other end is equipped with internal spline, and splined shaft is equipped with the external splines to match with the internal spline, the sun gear
One end stretch into cavity, the sun gear other end be equipped with drive gear, the spline housing, sun gear and drive gear energy
Enough to be slided together along splined shaft, one end that sun gear stretches into cavity is set with skeleton, and skeleton is equipped with circumferentially distributed locating slot,
Needle roller and compression spring are respectively arranged in each locating slot, described compression spring one end is against on the locating slot, and the other end of compression spring is by described in
Needle roller top pressure is on the inner surface of the cavity.
The course of work of technical solutions of the utility model is：
During engine start, starter is by driving splined shaft to rotate in the forward direction, and spline housing is in the effect of the shift fork of starter
The lower direction for promoting sun gear and drive gear along external splines to engine flywheel position is slided, then drive gear
It is engaged with engine flywheel, meanwhile, splined shaft drives spline housing to rotate in the forward direction by external splines and internal spline, the rotation of spline housing
Direction is identical to the support direction of needle roller with compression spring, and needle roller is stuck under the support of compression spring between spline housing and sun gear, so as to
Spline housing and sun gear are locked, spline housing is made to drive sun gear rotation, and then drives drive gear rotation, finally by drive gear
Drive engine start；
In engine starting process, engine speed can be promoted rapidly, and under the drive of engine, drive gear turns
Speed is more than spline rotating speed, and the rotating speed of sun gear is made to be more than the rotating speed of spline housing, and spline housing reversely turns compared with sun gear at this time
Dynamic, spline housing promotes needle roller compression press spring, makes to skid between spline housing and sun gear, and torque is blocked to transfer, prevents from starting motor-driven
Power is transferred on starter；
After the completion of engine start, starter is closed, and spline housing, sun gear and drive gear are multiple under the action of shift fork
Position.
When needing to change the direction of rotation of isolator, needle roller and compression spring can be changed by the installation direction for changing skeleton
Relative direction, so as to change the direction of rotation of isolator.
The utility model by setting skeleton and locating slot being set on skeleton, instead of in existing isolator in spline housing
The upper design for setting locating slot, can be realized by changing suit direction of the skeleton on sun gear to isolator direction of rotation
Adjustment, compared with prior art, this programme need not change the structure of any parts when changing isolator direction of rotation,
During the isolator in two kinds of directions of producer's production, same set of model can be used, without re-molding, can reduce and be produced into
This；Due to that need not set locating slot inside spline housing, the cavity of spline housing could be provided as circle, change existing spline
Set is reduced process, is made accuracy of manufacture higher, manufacture cost is more using cold extrusion and then the manufacturing method of spheroidizing
It is low；The design of this programme changes traditional cooked mode, versatile, at low cost, is more suitable for producing in enormous quantities.
Further, the internal spline and external splines are helical spline, and fixing sleeve is gone back on splined shaft equipped with clamp spring set, the drive
Return spring is equipped between moving gear and clamp spring set.
It is connected between splined shaft and spline housing by helical spline, due to effect of inertia, when starting engine, splined shaft
, between the two can be there are speed discrepancy when driving spline housing rotation, this will be such that spline housing is slided along helical spline, and then make spline
It moves in the direction that set, sun gear and drive gear engage automatically along spline axial direction drive gear with engine flywheel；It is sending out
After motivation starts successfully, return spring can make spline housing, sun gear and drive gear automatically reset.
Therefore set helical spline and return spring that this programme can be made not need to stir using shift fork, thus just
There is no the problem of shift fork abrasion, making, isolator work is more reliable and more stable, meanwhile, also there is no need to set shift fork phase for starter
The structure of pass, thus starter structure is simpler, so as to reduce the cost of starter.
Further, the spline housing is externally provided with the cover for wrapping up spline housing and sun gear, the cover and the sun gear
Between be equipped with card.
In view of the working environment of isolator, set the cover that can reduce external environment to isolator inside outside spline housing
The influence of device, the cover and card can prevent compression spring and needle roller from coming off, it is ensured that the stability that isolator uses.
Further, the end face that the sliding tooth is contacted with return spring is equipped with annular groove, and one end of return spring is embedded in
In annular groove.
Such design can prevent return spring from being slided in the end face of sliding tooth.
Further, it is welding between drive gear and sun gear.
Welding can make stable connection, and the mode welded is more convenient for producing mass, and processing is more convenient, makes manufacture more
Simplicity further reduces manufacture cost.
Description of the drawings
Fig. 1 is the structure diagram in a kind of isolator assembly embodiment one of the utility model；
Fig. 2 is the sectional view of A-A when not changing isolator direction of rotation in Fig. 1；
The sectional view that Fig. 3 is A-A behind change isolator direction of rotation in Fig. 1；
Fig. 4 is the structure diagram in a kind of isolator assembly embodiment two of the utility model；
Fig. 5 is a kind of sectional view of three middle skeleton of isolator assembly embodiment of the utility model；
Fig. 6 is the structure diagram in a kind of isolator assembly example IV of the utility model.
Specific embodiment
The utility model is described in further detail below by specific embodiment：
Reference sign：Reduction gearing 1, spline housing 2, the cover 3, card 4, sun gear 5, drive gear 6, return spring
7th, clamp spring set 8, needle roller 9, compression spring 10, splined shaft 11, clamp spring 12, flywheel 13, shift fork 14, skeleton 15.
Embodiment one
As shown in Figure 1, a kind of isolator assembly of the present embodiment includes splined shaft 11, reducing gear is equipped with successively on splined shaft 11
Wheel 1, spline housing 2, sun gear 5, drive gear 6.
Specifically, in the present embodiment, reduction gearing 1 is fixedly connected on splined shaft 11, reduction gearing 1 and splined shaft 11 it
Between for interference fit connection, reduction gearing 1 and starter power output end power connector, spline housing 2 are wrapped with the cover 3, flower
Key covers 2 one end and is equipped with cavity, and the other end is equipped with internal spline, and splined shaft 11 is equipped with the outer flower to match with 2 internal spline of spline housing
Key, spline housing 2 can be slided along external splines, and 5 one end of sun gear is stretched into the cavity of spline housing 2, the other end of sun gear 5 and drive
Moving gear 6 welds, and the sun is equipped with card 4 between the cover 3, and sun gear 5 is equipped with the groove for being used for blocking card 4, case
Spline housing 2 and sun gear 5 are connected as a single entity by card 4, spline housing 2, sun gear 5 and drive gear 6 can be together along splines
Axis 11 slides, and one end that sun gear 5 stretches into cavity is set with skeleton 15, as shown in Fig. 2, skeleton 15 is equipped with circumferential be uniformly distributed
Locating slot, be respectively arranged with needle roller 9 and compression spring 10 in each locating slot of locating slot, 10 one end of compression spring is against on locating slot, compression spring 10
Other end support needle roller 9, needle roller 9 is by locating slot through skeleton 15, and under the support of compression spring 10, one end is resisted against spline
The inner surface of the cavity of set 2, the other end is resisted against on sun gear 5, and in the present embodiment, needle roller 9 is the eccentric needle roller 9 of abnormity.
The course of work of the present embodiment is, during engine start, starter passes through reduction gearing 1 and drives splined shaft 11 positive
Rotation, spline housing 2 promote sun gear 5 and drive gear 6 along external splines to starting under the action of the shift fork 14 of starter
The direction of 13 position of machine flywheel is slided, and then drive gear 6 is engaged with engine flywheel 13, meanwhile, splined shaft 11 passes through
External splines and internal spline drive spline housing 2 to rotate in the forward direction, and the needle roller 9 between spline housing 2 and sun gear 5 is in the support of compression spring 10
Under, it locks spline housing 2 and sun gear 5, power passes to sun gear 5 by needle roller 9 from spline housing 2, spline housing 2 is made to drive the sun
5 rotation of wheel, and then drive gear 6 is driven to rotate, engine start is finally driven by drive gear 6；
In engine starting process, engine speed can be promoted rapidly, under the drive of engine, drive gear 6
Rotating speed is more than 11 rotating speed of splined shaft, the rotating speed of sun gear 5 is made to be more than the rotating speed of spline housing 2, spline housing 2 is compared with sun gear at this time
5 rotate backward, and 9 compression press spring 10 of needle roller makes to skid between spline housing 2 and sun gear 5, and torque is blocked to transfer, prevents engine
Power is transferred on starter；
After the completion of engine start, starter is closed, and spline housing 2, sun gear 5 and drive gear 6 are in the work of shift fork 14
With lower reset.
When needing to change the direction of rotation of isolator, by changing the installation direction of skeleton 15, as shown in Figures 2 and 3,
The installation direction of needle roller 9 and compression spring 10 can be changed, so as to change the direction of rotation of isolator.
In the present embodiment, reduction gearing 1 plays reduction rotating speed, increases the effect of torque, the present embodiment is by setting skeleton
15 and locating slot is set on skeleton 15, instead of the design for setting locating slot in existing isolator on spline housing 2, by changing
The adjustment to isolator direction of rotation can be realized in suit direction of the change skeleton 15 on sun gear 5, compared with prior art, this
Scheme need not change the structure of any parts when changing isolator direction of rotation, and producer produces the unidirectional of two kinds of directions
During device, same set of model can be used, without re-molding, production cost can be reduced；Since 2 inside of spline housing need not
Locating slot is being set, and the cavity of spline housing 2 could be provided as circle, changes existing spline housing 2 and uses cold extrusion and then nodularization
The manufacturing method of annealing, reduces process, makes accuracy of manufacture higher, and manufacture cost is lower；The design of this programme changes
Traditional cooked mode, it is versatile, it is at low cost, it is more suitable for producing in enormous quantities.
Embodiment two
As shown in figure 4, the difference between this embodiment and the first embodiment lies in：Fixing sleeve is gone back on splined shaft 11 equipped with clamp spring set
8, clamp spring set 8 is fixed by clamp spring 12, is equipped with return spring 7 between drive gear 6 and clamp spring set 8, internal spline and external splines are
Helical spline.
For the present embodiment when starting engine, starter drives splined shaft 11 to rotate in the forward direction by reduction gearing 1, splined shaft
11 drive spline housings 2 rotate in the forward direction, but the connection relation of spline due to effect of inertia and between the two, spline housing 2 and flower
There are speed discrepancy between key axis 11, spline housing 2, sun gear 5 and drive gear 6 can be automatically along splined shafts 11 to splined shaft 11
One end away from reduction gearing 1 is moved, and compresses return spring 7, and then drive gear 6 is made to be engaged with engine flywheel 13；
After the completion of engine start, starter is closed, and return spring 7 recovers former length, is promoted spline housing 2, the cover 3, sun gear 5 and is driven
Moving gear 6 resets.
Compared with embodiment one, the present embodiment need not be stirred using shift fork 14, there is no the problem of the abrasion of shift fork 14, be made
Isolator work is more reliable and more stable, meanwhile, also there is no need to set 14 relevant structure of shift fork, thus starter knot for starter
Structure is simpler, so as to reduce the cost of starter.
In the present embodiment, reduction gearing 1 plays reduction rotating speed, increases the effect of torque；Spline housing 2 passes through in splined shaft 11
On slip and cooperation with return spring 7, realize being automatically separated and combining for drive gear 6 and engine flywheel 13；Too
Needle roller 9 and compression spring 10 on sun wheel 5 realize the effect of isolator one-way transmission torque, prevent engine power back transfer to
Starter.
Embodiment three
As shown in figure 5, the present embodiment and embodiment two difference lies in：Locating slot in the present embodiment middle skeleton 15 is not
There are connection spline housing 2 and sun gear 5, connected between skeleton 15 and sun gear 5 by spline, 9 one end of needle roller is resisted against locating slot
In, the other end is resisted against the cavity surface of spline housing 2.When power transfers, needle roller 9 locks skeleton 15 and spline housing 2, make power from
Spline housing 2 is transferred to skeleton 15, then skeleton 15 by spline passing power to sun gear 5.
Example IV
As shown in fig. 6, difference lies in the present embodiment, flywheel 13 is located at drive gear 6 for the present embodiment and embodiment two
Close to the one side of sun gear 5, when the present embodiment works, starter drives splined shaft 11 to rotate, and drive gear 6 is nibbled with flywheel 13
It closes, return spring 7 is elongated, and return spring 7 recovers former length after start completion, by spline housing 2, sun gear 5, drive gear 6
It resets.
Above-described is only the embodiment of the utility model, and the common sense such as well known concrete structure and characteristic are herein in scheme
It does not describe excessively, the affiliated technology neck of utility model before one skilled in the art know the applying date or priority date
All ordinary technical knowledges in domain can know the prior art all in the field, and with using normal before the date
The ability of laboratory facilities is advised, one skilled in the art can be complete with reference to self-ability under the enlightenment that the application provides
It is apt to and implements this programme, some typical known features or known method should not becomes one skilled in the art's reality
Apply the obstacle of the application.It should be pointed out that for those skilled in the art, the premise of the utility model structure is not being departed from
Under, several modifications and improvements can also be made, these should also be considered as the scope of protection of the utility model, these are not all interfered with
The effect and practical applicability that the utility model is implemented.This application claims protection domain should be with the content of its claim
Subject to, the records such as specific embodiment in specification can be used for the content for explaining claim.
Claims (5)
1. a kind of isolator assembly including splined shaft, is equipped with spline housing and sun gear, spline housing one end successively on the splined shaft
Equipped with cavity, the other end is equipped with internal spline, and splined shaft is equipped with the external splines to match with the internal spline, the sun gear
One end is stretched into cavity, and the sun gear other end is equipped with drive gear, and the spline housing, sun gear and drive gear can
It is slided together along splined shaft, it is characterised in that：One end that sun gear stretches into cavity is set with skeleton, and skeleton is equipped with circumferentially distributed
Locating slot, be respectively arranged with needle roller and compression spring in each locating slot, described compression spring one end is against on the locating slot, compression spring it is another
End is by the needle roller top pressure on the inner surface of the cavity.
2. a kind of isolator assembly as described in claim 1, it is characterised in that：The internal spline and external splines are Turbo Flora
Key goes back fixing sleeve on splined shaft equipped with clamp spring set, return spring is equipped between the drive gear and clamp spring set.
3. a kind of isolator assembly as claimed in claim 2, it is characterised in that：The spline housing is externally provided with for wrapping up spline
The cover of set and sun gear is equipped with card between the cover and the sun gear.
4. a kind of isolator assembly as claimed in claim 2, it is characterised in that：The end that the sliding tooth is contacted with return spring
Face is equipped with annular groove, and one end of return spring is embedded in annular groove.
5. such as a kind of isolator assembly of Claims 1-4 any one of them, it is characterised in that：Drive gear and sun gear it
Between for welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268424.1U CN207454156U (en) | 2017-09-29 | 2017-09-29 | A kind of isolator assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721268424.1U CN207454156U (en) | 2017-09-29 | 2017-09-29 | A kind of isolator assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454156U true CN207454156U (en) | 2018-06-05 |
Family
ID=62249962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721268424.1U Expired - Fee Related CN207454156U (en) | 2017-09-29 | 2017-09-29 | A kind of isolator assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454156U (en) |
-
2017
- 2017-09-29 CN CN201721268424.1U patent/CN207454156U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 |