CN101403408A - Retainer ring for compensating axial clearance and use thereof - Google Patents
Retainer ring for compensating axial clearance and use thereof Download PDFInfo
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- CN101403408A CN101403408A CNA2007101253820A CN200710125382A CN101403408A CN 101403408 A CN101403408 A CN 101403408A CN A2007101253820 A CNA2007101253820 A CN A2007101253820A CN 200710125382 A CN200710125382 A CN 200710125382A CN 101403408 A CN101403408 A CN 101403408A
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- retaining ring
- ring
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- sliding surface
- gear
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- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The invention discloses a retaining ring which can compensate axial space; the retaining ring is an open-typed retaining ring, and comprises a thrust face and an outer ring surface; the retaining ring is characterized in that: the retaining ring also has a sliding surface, the shape of the cross section of which is wedge-shaped. The preferable value of the included angle between the sliding surface and the thrust face is 5-25 degrees. Suitable included angle slope is determined according to the axial force and the friction coefficient of the sliding surface of the retaining ring. Simultaneously, the shape of an installation groove of the retaining ring is modified correspondingly and changed into an inclined place with the same inclined angle by coordinating with the sliding surface, so the retaining ring which adapts to the installation groove of the retaining ring can slide and regulate the space automatically. The application of a retaining ring which can compensate axial space is used axially and fixedly by the steering input gear shaft of a gear rack type machinery redirector which is widely used in micro cars or light cars. The test and the actual operation prove that the retaining ring has good axial space compensation function, reduces the axial coordinating space and the axial movement value of the gear when in work, removes the abnormal meshing sound, and improves the working performance and reliability of the redirector.
Description
Technical field
The present invention relates to a kind of back-up ring, relate in particular to a kind of on miniature, light-duty vehicle the back-up ring that turns to input gear axial restraint to use of widely used pinion and-rack mechanical steering gear, has good axial clearance compensation effect, axial movement value when reducing the gear axial fit clearance with work improves the commutator service behaviour.
Background technique
The pinion and-rack mechanical steering gear is simple in structure because of it, cost is lower, and transmission efficiency height, volume are easy to car load for a short time and arrange and be used widely, and be especially all the more so on economy car and minicar.But the existing market feedback information shows, and is more and more higher as inefficacy ratio in the main safety component pinion and-rack mechanical steering gear three guarantees phase along with improving constantly of car load product three guarantees phase, mainly shows as and turns to abnormal sound.In fact, failure cause roughly has following a few class: one, the wearing and tearing of middle part spheric connection or external ball cephalomere bulb position cause pine spacious.Two, gear rack engaging piece break-in post gap is excessive, the gear axial float is excessive.Three, other reason.Wherein, because of small gear shifting amount in engagement process is bigger, add the gap value through having enlarged in fact after the break-in, synthesis result causes steering assembly to lose efficacy when work.As reducing the gear axial movement value, will improve the transmission effect and the Life cycle of gear rack mechanical steering gear greatly, and then improve its service behaviour and economic performance from design.
Existing gear rack mechanical steering gear, the axially locating mode of input shaft gear generally is: the lower end, a little needle bearing is pressed in the bearing hole of housing bottom, the two is located by the lower end surface, afterwards small gear lower end axial region is packed in the little needle bearing hole, support pinion shaft shaft shoulder portion by the bearing hole upper-end surface; Upper end, ball bearing and small gear have been assembled the back and have been inserted in the housing gear cavity, the ball bearing back-up ring is packed into limit input gear shaft degrees of freedom in the axial direction in the housing circlip groove, as shown in Figure 1.The general cross section of used back-up ring is circle or rectangular, considers installation technology, is greater than back-up ring thickness or diameter of section at the A/F of circlip groove.The prior art scheme all can't be eliminated its matching gap in the axial direction, so that play under the effect of the axial thrust load of gear shaft in working order, and then has reduced the smoothness of gear rack engagement, has increased heel and toe wear, and with rotating abnormal sound.
Summary of the invention
The purpose of this invention is to provide a kind of back-up ring that can compensating axial clearance, it not only can compensating axial clearance, and simple in structure, good manufacturability.
Further aim of the present invention provides a kind of application of back-up ring that can compensating axial clearance.
The technical solution adopted for the present invention to solve the technical problems is: a kind of back-up ring that can compensating axial clearance, and described ring washer is the open type ring washer, comprises thrust surface, outer ring surface; It is characterized in that: described ring washer also has slip surface, and its shape of cross section is wedge shape.
The preferred 5-25 of angle value of described slip surface and thrust surface °.
15-20 ° of best angle value.
Principle of the present invention is owing to adopt slip surface on the back-up ring, to determine suitable gradient by the friction factor of axial force and back-up ring slip surface.Simultaneously back-up ring mounting groove shape is carried out corresponding change, cooperate slip surface to change the inclined-plane (can realize that manufacturability is strong) at same inclination angle into by the blade shapes that the change machining is used.Like this, the ring washer that adapts to the back-up ring mounting groove self-regulating gap of can sliding.
A kind of application of back-up ring that can compensating axial clearance, it is to use by the input gear axial restraint that turns to of widely used pinion and-rack mechanical steering gear on miniature, light-duty vehicle, test and actual driving operation show, has good axial clearance compensation effect, axial movement value when reducing the gear axial fit clearance with work improves commutator service behaviour and reliability.
The invention has the beneficial effects as follows, owing to only adopt variation to make it to have the gap that the self-regulating ability is produced to eliminate quality of fit fully by the ring washer structure, ensure the good engagement of input wheel and rack, eliminate the axial float of input gear and the engagement abnormal sound of generation thereof.
The present invention is further illustrated below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 analyses and observe organigram for commutator.
Fig. 2 is circular back-up ring means of fixation schematic representation for the prior art cross section.
Fig. 3 ring washer sectional view of the present invention.
Fig. 4 is a back-up ring means of fixation schematic representation of the present invention.
Among the figure: 1. back-up ring, 2. ball bearing, 3. adjust body, 4. slip surface, 5. thrust surface, 6. outer ring surface.
Embodiment
As shown in Figure 1, in a kind of commutator, the ball bearing of adjusting in the body 32 is blocked by ring washer 1.
As shown in Figure 2, in a kind of commutator, the ball bearing of adjusting in the body 32 is blocked for circular ring washer 1 by the cross section.
Now be that circular back-up ring means of fixation is an example, the construction size that the back-up ring designing institute is considered is described with the cross section.As shown in Figure 2, the height of establishing ball bearing is A, and tolerance value is a, and the back-up ring width is B, and its tolerance value is b, and upper edge, circlip groove outside height is E, and tolerance value is e, and then the minimum value of axial clearance value I is:
I_＝E-(A+a+B+b)≥0
The maximal clearance
I
-＝E+e-(A+B)
If the ring washer cross section is not circular but square, then for installation technology and efficient, I_ can not be 0, must be greater than a definite value K, and make the width of ring washer less than width of rebate, enter in the groove to make things convenient for ring washer.
Shown in Fig. 3,4, a kind of back-up ring that can compensating axial clearance, described ring washer is the open type ring washer, comprises thrust surface 5, outer ring surface 6; It is characterized in that: described ring washer also has slip surface 4, and its shape of cross section is wedge shape.
The construction size that the back-up ring designing institute is considered: machining condition and design accuracy target are constant, shown in Fig. 3,4, and ring washer height base dimension B; If ring washer and groove face contact ratio minimum value are η, groove depth is w, when fitting surface and horizontal plane angle β were, then this ring washer adjustable clearance value range was:
Δt＝(w/cosβ-η)*sinβ
Cooperate minimum clearance:
I
-＝e+a+b-Δt
When e+a+b-Δ t≤0, the gap can be compensated fully.
When e+a+b-Δ t＞0, the gap compensation range is [0, e+a+b-Δ t]
Cooperate the maximal clearance:
I
-＝E+e-(A+B)-Δt＝E+e-(A+B)-(w/cosβ-η)*sinβ
So, when η, β require to certain certain value, determine suitable w, E value, if thickness of shell is thicker, intensity permits, then when Δ t＞=e+a+b, can offset matching gap fully by its compensating action.
Specific embodiment:
Above noodles spare is an example, and machining condition and design accuracy target are constant, back-up ring size A=12.1, B=1.5, back-up ring outside height B
1=1.2, each allowance below nominal size is 0, back-up ring slip surface and thrust surface angle β=and 15 °, then as Δ t=e+a+b, promptly the self-adjusting ability of back-up ring just can be eliminated when cooperating the gap that produces fully, and the top height of groove inwall is made as E
1:
E
1＝A+1.2＝13.3
Δt＝e+a+b＝2.0
By
Δt＝(w/cosβ-η)*sinβ
Get w=1.35
E=E then
1+ w*tan β=13.66mm＞A+1.2=13.3
Hence one can see that, the groove outside opening broad of this structure, and the ring washer outside is narrower, has improved the technology capability and the manufacturing efficiency of assembling greatly.
As from the foregoing, the present invention not only is only limited to the input gear of mechanical steering gear and fixes, and same being suitable for relevant axis hole cooperates spacing other products.
Claims (4)
1, a kind of back-up ring that can compensating axial clearance, described ring washer is the open type ring washer, comprises thrust surface, outer ring surface; It is characterized in that: described ring washer also has slip surface, and its shape of cross section is wedge shape.
2, back-up ring according to claim 1 is characterized in that: 5-25 ° of the angle value of described slip surface and thrust surface.
3, back-up ring according to claim 2 is characterized in that: 15-20 ° of the angle value of described slip surface and thrust surface.
4, a kind of back-up ring that can compensating axial clearance turns to the axially spacing application in housing of input gear at the pinion and-rack mechanical steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101253820A CN101403408B (en) | 2007-12-19 | 2007-12-19 | Retainer ring for compensating axial clearance and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101253820A CN101403408B (en) | 2007-12-19 | 2007-12-19 | Retainer ring for compensating axial clearance and use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101403408A true CN101403408A (en) | 2009-04-08 |
| CN101403408B CN101403408B (en) | 2010-12-22 |
Family
ID=40537514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101253820A Expired - Fee Related CN101403408B (en) | 2007-12-19 | 2007-12-19 | Retainer ring for compensating axial clearance and use thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101403408B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047169A (en) * | 2013-01-15 | 2013-04-17 | 中国兵器工业集团第七0研究所 | Adjustable thrust structure for balancing axial force of gear |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1980002059A1 (en) * | 1979-03-23 | 1980-10-02 | Caterpillar Tractor Co | Keeper assembly |
| CN2466416Y (en) * | 2001-02-26 | 2001-12-19 | 万向钱潮股份有限公司 | Convenient-to-mount cross pin universal coupling |
| DE102004036105A1 (en) * | 2004-07-24 | 2006-03-16 | Ina-Schaeffler Kg | Bearing arrangement in a universal joint |
| CN200974554Y (en) * | 2006-12-01 | 2007-11-14 | 东风汽车有限公司 | Integral power steering gear for automobile power-assisted steering system |
| CN200981153Y (en) * | 2006-12-20 | 2007-11-28 | 中国科学院沈阳自动化研究所 | Special press mounting mechanism for axial circlip |
-
2007
- 2007-12-19 CN CN2007101253820A patent/CN101403408B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047169A (en) * | 2013-01-15 | 2013-04-17 | 中国兵器工业集团第七0研究所 | Adjustable thrust structure for balancing axial force of gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101403408B (en) | 2010-12-22 |
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Granted publication date: 20101222 Termination date: 20201219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |