CN206545564U - The little gear detent mechanism and starter of a kind of starter - Google Patents
The little gear detent mechanism and starter of a kind of starter Download PDFInfo
- Publication number
- CN206545564U CN206545564U CN201720184697.1U CN201720184697U CN206545564U CN 206545564 U CN206545564 U CN 206545564U CN 201720184697 U CN201720184697 U CN 201720184697U CN 206545564 U CN206545564 U CN 206545564U
- Authority
- CN
- China
- Prior art keywords
- ring
- little gear
- output shaft
- starter
- gap
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model is related to auto parts and components processing technique field, more particularly to a kind of starter little gear detent mechanism and starter.The utility model includes the little gear being set on the output shaft of starter, the front end of little gear is provided with contained structure, for accommodating the back-up ring being fixed on output shaft, the gap and back-up ring of contained structure and back-up ring and the gap sum X of output shaft are less than little gear and the minimum clearance Y of output between centers.By being arranged with little gear on the output shaft of starter, the front end of little gear is provided with contained structure, contained structure formation accommodating chamber, for accommodating the back-up ring being fixed on output shaft, and the gap and back-up ring of contained structure and back-up ring and the gap sum X of output shaft are less than little gear and the minimum clearance Y of output between centers, so when little gear is in impulsive force radially larger by flywheel, enabling to contained structure to be contacted with back-up ring, so as to avoid little gear and output shaft phase adhesion.
Description
Technical field
The utility model is related to auto parts and components processing technique field, more particularly to a kind of starter little gear localization machine
Structure and starter.
Background technology
CN101265864B discloses a kind of engine primer with improved helical spline structure, as shown in figure 1,
Including:Motor；The output shaft 110 driven by motor；It is arranged on the little gear 111 on output shaft 110；And shift unit.It is defeated
Shaft 110 has the first helical spline formed on the periphery of output shaft 110.Little gear 111, which has, to be formed in little gear 111
Inner circumferential on the second helical spline engage so as to the first helical spline with output shaft 110.Shift unit passes through first and
Engagement between two helical splines makes little gear 111 be shifted along output shaft 110, so that little gear 111 and engine
Ring gear is engaged.In addition, in the starter, the trip between the top of the bottom of the first helical spline and the second helical spline
Gap is more than the backlash between the flank of the first helical spline and the flank of the second helical spline.By providing out that above-mentioned size is closed
System, it can be ensured that the positive engagement between output shaft 110 and little gear 111.More specifically, when output shaft 110 and little gear 111
Between occur larger vibration when, the inclination of little gear 111 to output shaft 110 is limited, so that it is guaranteed that the first and second spiral shells
There is sufficient contact area between japanese bearbind key.Therefore, the adhesion between the first and second helical splines is reduced.Although having so
Dimension limitation, but when little gear 111 is contacted with flywheel by larger impulsive force, still can cause the first helical spline
It is in contact with the second helical spline, so as to be difficult to avoid that the adhesion between the first and second helical splines.Also, back-up ring 112 is consolidated
It is scheduled on output shaft 110, and in the side of the front end of little gear 111, when little gear 111 moves to back-up ring 112, back-up ring 112
Rear end face be in contact with the front end face of little gear 111, such structure causes size of the starter on the direction of output shaft 110
It is larger.
CN101451483B discloses a kind of starter, as shown in Fig. 2 it includes：Housing, is supported with horse on housing
Reach；Little gear moving body, it includes being operable to engaging the revolving force of motor being delivered to ring tooth with the rim gear wheel of engine
The little gear 211 of wheel, is also equipped with back-up ring 212 on output shaft 210, and back-up ring 212 is located at the front end of little gear 211, and keeps off
When the rear end face of circle 212 is contacted with the front end face of little gear 211, the effect spacing to little gear 211 is reached, as
CN101265864B is the same, and so setting back-up ring 212 also to cause the overall structure of starter, size is larger in the axial direction.
CN11018930 discloses a kind of starter small gear stop device, as shown in figure 3, the output including transmitting power
Axle 310, the sleeve 315 set on output shaft 310, it is to be formed between output shaft 310 in spatial portion to have in its inner circumferential
The drive shaft of the inner circumferential minor diameter in all major diameter portions, the little gear 311 being supported on by bearing rotary sliding on bracket, with
And be arranged on when the drive shaft of little gear 311 is not axially driven on above-mentioned output shaft 310, in driving pinion
The driving of little gear 311 is contacted, limited during 311 drive shaft with the end difference of the inner circumferential minor diameter in above-mentioned inner circumferential major diameter portion
The retainer 312 in axle sliding distance gap, in the outer diameter part of retainer 312 and the inner circumferential major diameter portion of the drive shaft of little gear 311
In gap X, the outer diameter part of output shaft 310 and the non-inside diameter gap A of wear sleeve 315, the outer diameter part of output shaft 310 and retainer 312
There is X between footpath portion gap B, the inside diameter allowable wear amount C of sleeve 315>A+B+C relation so that sleeve 315 and little gear
311 drive shaft is not always interfered with each other.But such structure will additionally increase sleeve 315 so that starter it is complicated,
Add the manufacturing cost and assembling difficulty of starter.
CN204003227U discloses a kind of isolator assembly, as shown in figure 4, being provided with drive gear 411 including top
Gear shaft 410, the centre position of gear shaft 410 is provided with to be provided with outside splined sleeve, splined sleeve outside external splines, external splines and is provided with
Gear 411；The tail end of gear shaft 410 is arranged with back-up ring 412, is provided between back-up ring 412 and splined sleeve on spring, splined sleeve
Left and right two ends are separately installed with bearing a416 and bearing b417, but are added additionally installing bearing a416 and bearing b417
Part so that starter it is complicated, also add manufacture starter required for expense and assembling difficulty；In addition by
Relative complex in the structure of bearing itself, the parts being related to are also more, so being also easily damaged in use, no
Beneficial to the normal operation of starter.
Utility model content
The purpose of this utility model is the little gear detent mechanism for proposing a kind of starter, when little gear is by flywheel footpath
When to greater impact power, it is to avoid little gear and output shaft phase adhesion.
Another purpose of the present utility model is to propose a kind of starter.
For up to this purpose, the utility model uses following technical scheme：
A kind of little gear detent mechanism of starter, including the little gear being set on the output shaft of starter are described small
The front end of gear is provided with contained structure, and back-up ring on the output shaft is fixed on for accommodating, the contained structure with it is described
The gap sum X of the gap of back-up ring and the back-up ring and the output shaft is less than the little gear and the minimum of the output between centers
Gap Y.
As a kind of preferred scheme of the little gear detent mechanism of starter, inside spin flower is provided with the little gear
The outer spiral spline being adapted with the internal thread spline is provided with key, the output shaft, the minimum clearance Y is described outer
Gap Y, the tooth root of the outer spiral spline and the interior spiral shell between the tooth root of the tooth top of helical spline and the internal thread spline
The minimum in the Y of gap between the gap Y of the gear tip clearance of japanese bearbind key and the flank of the outer spiral spline and the internal thread spline
Value.
As a kind of preferred scheme of the little gear detent mechanism of starter, the outer shape of the back-up ring is cylinder,
The shape that the contained structure surrounds cavity is adapted with the outer shape of the back-up ring.
As a kind of preferred scheme of the little gear detent mechanism of starter, the outer shape of the back-up ring is truncated cone-shaped,
The shape that the contained structure surrounds cavity is adapted with the outer shape of the back-up ring.
As a kind of preferred scheme of the little gear detent mechanism of starter, the first groove is provided with the output shaft,
The second groove is provided with the inside of the back-up ring, baffle ring, described second are placed between first groove and second groove
The minimum diameter of groove is Φ 1, and the section diameter of a circle of the baffle ring is Φ 2, and the minimum diameter of the back-up ring is Φ 3, and Φ
The ＞ Φ 3 of 1+2 Φ 2.
As a kind of preferred scheme of the little gear detent mechanism of starter, the outer sheath of the back-up ring is provided with the first friction
Ring, first drag ring is less than institute with the gap of the contained structure and the gap sum Z of the back-up ring and the output shaft
State minimum clearance Y.
As a kind of preferred scheme of the little gear detent mechanism of starter, the inner sleeve of the contained structure is provided with second
Drag ring, the inner side of second drag ring and the gap of the back-up ring and the gap sum M of the back-up ring and the output shaft
Less than the minimum clearance Y.
As a kind of preferred scheme of the little gear detent mechanism of starter, the outer sheath of the back-up ring is provided with the first friction
Ring, the contained structure inner sleeve is provided with the second drag ring, and the inner side of second drag ring is outer with first drag ring
The gap sum N of the gap of side and the back-up ring and the output shaft is less than the minimum clearance Y.
A kind of starter, includes the little gear detent mechanism of starter as described above.
As a kind of preferred scheme of starter, in addition to decelerator, the decelerator is planetary reduction gear.
The beneficial effects of the utility model are：
The application provides a kind of little gear detent mechanism of starter, by being arranged with small tooth on the output shaft of starter
Wheel, the front end of little gear is provided with contained structure, contained structure formation accommodating chamber, for accommodating the gear being fixed on output shaft
Circle, and the gap and back-up ring of contained structure and back-up ring and the gap sum X of output shaft are less than little gear with exporting between centers most
Small―gap suture Y, so when little gear is in impulsive force radially larger by flywheel, enabling to contained structure to be connect with back-up ring
Touch, so as to avoid little gear and output shaft phase adhesion；Simultaneously, it is not necessary to which sleeve is additionally set, the part of needs is reduced, is dropped
Low manufacturing cost, simplifies installation procedure；Further, since back-up ring is all or part of in axially limitation little gear displacement
The inside for being in little gear is waited, so the length required for effectively reducing output shaft, and then starter is reduced in axial direction
Length；Again because back-up ring is stuck in the inside of little gear, bearing is instead of for little gear in the support of radial direction, needs are reduced
Part, reduce the cost for manufacturing whole starter.
Brief description of the drawings
, below will be to the utility model embodiment in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are only that this practicality is new
Some embodiments of type, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to the content and these accompanying drawings of the utility model embodiment.
Fig. 1 is the structural representation of the first prior art starter；
Fig. 2 is the structural representation of second of prior art starter；
Fig. 3 is the structural representation of the stop device of the third prior art starter；
Fig. 4 is the structural representation of the 4th kind of prior art starter；
Fig. 5 is the installation diagram of the little gear detent mechanism that embodiment one is provided and output shaft；
Fig. 6 is the sectional view at A-A in Fig. 5；
Fig. 7 is the partial enlarged drawing at B in Fig. 6；
Fig. 8 is the structural representation that embodiment two provides starter.
Marked in figure as follows：
110- output shafts；111- little gears；112- back-up rings；
210- output shafts；211- little gears；212- back-up rings；
310- output shafts；311- little gears；312- retainers；315- sleeves；
410- gear shafts；411- gears；412- back-up rings；416- bearings a；417- bearings b；
510- output shafts；511- little gears；512- back-up rings；513- baffle rings；514- decelerators；
5100- outer spiral splines；
5110- contained structures；5111- internal thread splines.
Embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, below in conjunction with the accompanying drawings and pass through
Embodiment further illustrates the technical solution of the utility model.
Embodiment one：
As shown in Figure 5-Figure 7, embodiment one provides a kind of little gear detent mechanism of starter, including is set in starting
Little gear 511 on the output shaft 510 of machine, the front end of little gear 511 is provided with contained structure 5110, and contained structure 5110 is formed
Accommodating chamber, for accommodating the back-up ring 512 being fixed on output shaft 510, gap and back-up ring of the contained structure 5110 with back-up ring 512
The 512 and gap sum X of output shaft 510 is less than minimum clearance Y between little gear 511 and output shaft 510.When little gear 511 with
, can be by the huge impact for coming from flywheel, due to contained structure 5110 and gear in radial direction among the process that flywheel is meshed
The gap of circle 512 and the gap sum X of back-up ring 512 and output shaft 510 are less than between the minimum between little gear 511 and output shaft 510
Gap Y, so enabling to contained structure 5110 to be in contact with back-up ring 512, bears to come from the radial impact force of flywheel, it is to avoid
Little gear 511 and the phase adhesion of output shaft 510；Simultaneously, it is not necessary to which sleeve is additionally set, the part of needs is reduced, system is reduced
This is caused, installation procedure is simplified；Further, since back-up ring 512 is in axially limitation 511 displacement of little gear, the whole of back-up ring 512
Or the inside of little gear 511 is partially located in, so effectively reducing the length required for output shaft 510, and then reduce
Length of the motivation in axial direction；Again because back-up ring 512 is stuck in the inside of little gear 511, bearing is instead of for little gear 511 in footpath
Upward support, reduces the part of needs, reduces the cost for manufacturing whole starter.
It is provided with to be provided with internal thread spline 5111, output shaft 510 in little gear 511 and is mutually fitted with internal thread spline 5111
The outer spiral spline 5100 matched somebody with somebody, minimum clearance Y is between the tooth top of outer spiral spline 5100 and the tooth root of internal thread spline 5111
The gap Y2 and outer spiral spline 5100 of gap Y1, the tooth root of outer spiral spline 5100 and internal thread spline 5111 gear tip clearance with
The minimum value in the Y3 of gap between the flank of internal thread spline 5111.By being provided with internal thread spline in little gear 511
5111, outer spiral spline 5100 is provided with output shaft 510, little gear 511 is revolved under the stirring of shift fork along output shaft 510
Transfer is dynamic, because X is less than minimum clearance Y, when can make it that little gear 511 is impacted by flywheel, it is to avoid outer spiral spline
5100 tooth top is in contact with the tooth root of internal thread spline 5111, so as to avoid outer spiral spline 5100 and internal thread spline
5111 phase adhesions.
The outer shape of back-up ring 512 is cylinder, and contained structure 5110 surrounds the shape of cavity and the outside shape of back-up ring 512
Shape is adapted.Because the outer surface of back-up ring 512 is smooth, the periphery of back-up ring 512 and the madial wall of contained structure 5110 are reduced
Between friction.In addition, the outer shape of back-up ring 512 is truncated cone-shaped, contained structure 5110 surrounds the shape and back-up ring 512 of cavity
Outer shape is adapted, and can effectively limit the position that little gear 511 is defined in the axial direction.
The first groove is provided with output shaft 510, the inner side of back-up ring 512 is provided with the second groove, the first groove and second
Baffle ring 513 is placed between groove, the minimum diameter of the second groove is Φ 1, and the section diameter of a circle of baffle ring 513 is Φ 2, back-up ring
512 minimum diameter is Φ 3, and ＞ Φ 3 of Φ 1+2 Φ 2.Baffle ring 513 is C-shaped, when thrust of the baffle ring 513 by back-up ring 512
When, because contact surface is curved surface, so thrust be decomposed into the left with downward component, downward component extrudes baffle ring 513 to defeated
The axis of shaft 510 mutually shrinks along footpath, as Φ 1+2 2 ＞ Φ 3 of Φ, back-up ring 512 can be stopped to the free end of output shaft 510
(i.e. left end in Fig. 5) is moved.
The outer sheath of back-up ring 512 is provided with the first drag ring, gap and back-up ring 512 of first drag ring with contained structure 5110
It is less than minimum clearance Y with the gap sum Z of output shaft 510.Further, it is also possible to which the inner sleeve in contained structure 5110 is provided with second
Drag ring, the gap sum M of the inner side of the second drag ring and the gap of back-up ring 512 and back-up ring 512 and output shaft 510 is less than minimum
Gap Y.The first drag ring can also be provided with the outer sheath of back-up ring 512 simultaneously, the inner sleeve of contained structure 5110 rubs provided with second
Wipe ring, the inner side of the second drag ring and the gap in the outside of the first drag ring and the gap sum N of back-up ring 512 and output shaft 510
Less than minimum clearance Y.Set the first drag ring and the second drag ring to be advantageous in that, be convenient for changing, when the first drag ring or
When the thickness of two drag rings can not avoid little gear 511 and the collision of output shaft 510, can timely it be changed, and
It is simple and convenient without changing little gear 511 or back-up ring 512.
Embodiment two：
As shown in figure 8, the little gear that embodiment two provides the starter in a kind of starter, including such as embodiment one is determined
Position mechanism, in addition to decelerator 514, decelerator 514 is planet wheel decelerator, including sun gear, ring gear and a number of
There is the internal gear engaged with planetary gear on planetary gear, ring gear, while having a hole again, middle cover bearing is placed in the hole.Also
Including clutch, clutch is that the direction of rotation of roller-type overrunning one-way clutch, i.e., one can transmit torque, another rotation
Direction can overdrive clutch and torque can not be transmitted, such be advantageous in that can be avoided due to flywheel and the side of rotation of output shaft 510
To failure caused by inconsistent.
Note, general principle of the present utility model and principal character has been shown and described above and of the present utility model excellent
Point.It should be understood by those skilled in the art that, the utility model is not limited to the embodiments described above, and above-mentioned embodiment and is said
Simply illustrate principle of the present utility model described in bright book, on the premise of the utility model spirit and scope are not departed from, this
Utility model also has various changes and modifications, and these changes and improvements are both fallen within the range of claimed the utility model,
Claimed scope of the present utility model is by appended claims and its equivalent thereof.
Claims (10)
1. the little gear detent mechanism of a kind of starter, it is characterised in that including being set on the output shaft (510) of starter
Little gear (511), the front end of the little gear (511) is provided with contained structure (5110), and the output is fixed on for accommodating
Back-up ring (512) on axle (510), the gap of the contained structure (5110) and the back-up ring (512) and the back-up ring (512) with
The gap sum X of the output shaft (510) is less than the minimum clearance Y between the little gear (511) and the output shaft (510).
2. the little gear detent mechanism of starter according to claim 1, it is characterised in that on the little gear (511)
It is provided with internal thread spline (5111), the output shaft (510) and is provided with what is be adapted with the internal thread spline (5111)
Outer spiral spline (5100), the minimum clearance Y is the tooth top and the internal thread spline of the outer spiral spline (5100)
(5111) tooth top of gap Y1, the tooth root of the outer spiral spline (5100) and the internal thread spline (5111) between tooth root
Between gap Y2 and the outer spiral spline (5100) and the internal thread spline (5111) flank between gap Y3 in most
Small value.
3. the little gear detent mechanism of starter according to claim 2, it is characterised in that outside the back-up ring (512)
Portion is shaped as cylinder, and the shape and the outer shape of the back-up ring (512) that the contained structure (5110) surrounds cavity are mutually fitted
Match somebody with somebody.
4. the little gear detent mechanism of starter according to claim 2, it is characterised in that outside the back-up ring (512)
Portion is shaped as truncated cone-shaped, and the shape and the outer shape of the back-up ring (512) that the contained structure (5110) surrounds cavity are mutually fitted
Match somebody with somebody.
5. the little gear detent mechanism of the starter according to claim any one of 1-4, it is characterised in that the output shaft
(510) it is provided with the inside of the first groove, the back-up ring (512) and is provided with the second groove, first groove and described the
Be placed with baffle ring (513) between two grooves, the minimum diameter of second groove is Φ 1, the section circle of the baffle ring (513) it is straight
Footpath is Φ 2, and the minimum diameter of the back-up ring (512) is Φ 3, and the ＞ Φ 3 of Φ 1+2 Φ 2.
6. the little gear detent mechanism of the starter according to claim any one of 1-4, it is characterised in that the back-up ring
(512) outer sheath is provided with the first drag ring, gap and the gear of first drag ring with the contained structure (5110)
Enclose (512) and the gap sum Z of the output shaft (510) is less than the minimum clearance Y.
7. the little gear detent mechanism of the starter according to claim any one of 1-4, it is characterised in that the receiving knot
The inner sleeve of structure (5110) is provided with the second drag ring, the inner side of second drag ring and the gap of the back-up ring (512) and institute
The gap sum M for stating back-up ring (512) and the output shaft (510) is less than the minimum clearance Y.
8. the little gear detent mechanism of the starter according to claim any one of 1-4, it is characterised in that the back-up ring
(512) outer sheath is provided with the first drag ring, and contained structure (5110) inner sleeve is provided with the second drag ring, and described second rubs
Wipe the gap and the gap of the back-up ring (512) and the output shaft (510) in the inner side of ring and the outside of first drag ring
Sum N is less than the minimum clearance Y.
9. a kind of starter, it is characterised in that include the little gear localization machine of the starter as described in claim any one of 1-8
Structure.
10. starter according to claim 9, it is characterised in that also including decelerator (514), the decelerator (514)
For planetary reduction gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184697.1U CN206545564U (en) | 2017-02-28 | 2017-02-28 | The little gear detent mechanism and starter of a kind of starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184697.1U CN206545564U (en) | 2017-02-28 | 2017-02-28 | The little gear detent mechanism and starter of a kind of starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206545564U true CN206545564U (en) | 2017-10-10 |
Family
ID=59995371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720184697.1U Withdrawn - After Issue CN206545564U (en) | 2017-02-28 | 2017-02-28 | The little gear detent mechanism and starter of a kind of starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206545564U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837651A (en) * | 2017-02-28 | 2017-06-13 | 上海法雷奥汽车电器系统有限公司 | The little gear detent mechanism and starter of a kind of starter |
-
2017
- 2017-02-28 CN CN201720184697.1U patent/CN206545564U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837651A (en) * | 2017-02-28 | 2017-06-13 | 上海法雷奥汽车电器系统有限公司 | The little gear detent mechanism and starter of a kind of starter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171010 Effective date of abandoning: 20180724 |
|
| AV01 | Patent right actively abandoned |