CN202165432U - One-way needle bearing - Google Patents
One-way needle bearing Download PDFInfo
- Publication number
- CN202165432U CN202165432U CN2011202011568U CN201120201156U CN202165432U CN 202165432 U CN202165432 U CN 202165432U CN 2011202011568 U CN2011202011568 U CN 2011202011568U CN 201120201156 U CN201120201156 U CN 201120201156U CN 202165432 U CN202165432 U CN 202165432U
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- China
- Prior art keywords
- retainer
- inner ring
- needle roller
- outer ring
- cage
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- Expired - Fee Related
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Abstract
The utility model relates to a needle bearing for one-way force transfer, in particular to a one-way needle bearing used on an automobile engine. The utility model provides the following technical scheme: the one-way needle bearing comprises an inner ring, an outer ring sleeved with the inner ring, a cage positioned between the inner and the outer rings, a plurality of elastic elements arranged on the cage, and a plurality of needles uniformly distributed along the circumference of the cage, wherein a plurality of equidirectional wedged locking grooves and cage positioning grooves are uniformly distributed on the circumferential surface of the inner ring adjacently clung to the needles; a positioning block is arranged on the cage; each of the elastic element comprises a connecting end and a supporting end; the connecting ends are fixedly connected with the cage; the supporting ends are semi-arc supporting strips arranged towards the circumferential surfaces of the needles; each of the semi-arc supporting strips comprises a positioning point and supporting points respectively positioned on the two sides of the positioning point; the two supporting points are propped against the needles; and the positioning point is propped against the cage. By adopting the above technical scheme, the one-way needle bearing provided by the utility model can prevent clutch from failing and has long service life.
Description
Technical field
The utility model relates to a kind of needle bearing of unidirectional delivery power, particularly a kind of unidirectional needle bearing that is used on the motor car engine.
Background technique
Needle bearing is the roller bearing of band cylindrical roller, and its diameter relatively, roller are not only carefully but also long.This roller is called needle roller.Although have less cross section, bearing still has higher load-bearing ability, therefore, is specially adapted to the restricted occasion of radial space.
At present, the needle bearing that occurs on market and the data mainly by inner ring, and the outer ring of inner ring fit, be in retainer between inner ring and the outer ring, be located at plurality of elastic part and some some needle rollers on the retainer along the retainer circumference uniform distribution; Usually, on the inner peripheral surface of outer ring, be evenly equipped with some wedge shaped stop grooves; Surmount in the belt pulley in the automobile current generator free style; Because relatively all speed runnings of inner ring of generator unidirectional needle bearing when work; The outer ring rotating speed carries out frequent fast the switching; Needle roller and outer ring run-in synchronism receive the effect of high speed centrifugation power, can produce clutch on its needle roller, inner ring and the outer ring during clutch of wedge shaped stop groove and lose efficacy; And when unidirectional needle bearing when running up, lubricating grease receives centrifugal action to get rid of the wedge shaped stop groove to the outer ring, can not effectively lubricating when needle roller and inner ring slide, can influence the working life of unidirectional needle bearing.
Summary of the invention
To the deficiency that existing technology exists, the utility model provides a kind of unidirectional needle bearing that prevents clutch inefficacy, long service life.
For realizing above-mentioned purpose; The utility model provides following technological scheme: a kind of unidirectional needle bearing; Include inner ring, and the outer ring of inner ring fit, be in retainer between inner ring and the outer ring, be located at plurality of elastic part and some some needle rollers on the retainer along the retainer circumference uniform distribution; It is characterized in that: be evenly equipped with some wedge shaped stop groove and retainer locating slots of arranging in the same way on the adjacent side face that pastes of said inner ring and needle roller; The wedge shaped stop groove includes movable end and positive stop end, and its movable end relative limit end more is lower than the adjacent side face that pastes of inner ring and needle roller, and is connected through the inclined-plane between movable end and the positive stop end; When described needle roller is in the movable end place of wedge shaped stop groove, leave the gap between needle roller and the outer ring, when needle roller was in the positive stop end place of wedge shaped stop groove, needle roller was to conflict with the outer ring and cooperates; Described retainer is provided with the positioning block that extends in the inner ring holder locating slot; Described elastic component includes connecting end and support end; Its connecting end is fixedly connected with retainer; Support end is the semiarc shape supporting bar that is provided with towards the needle roller side face; This semiarc shape supporting bar includes locating point and is in the strong point of locating point both sides respectively, and two strong points and needle roller are conflicted, and locating point and retainer are conflicted.
Adopt technique scheme, through the wedge shaped stop groove is set on inner ring, in use, and needle roller and inner ring run-in synchronism, needle roller does not receive the effect of high speed centrifugation power, and the needle roller of unilateral bearing and inner ring wedge shaped stop groove clutch sensitivity are very high; And when outer ring during to right rotation, needle roller makes outer ring, needle roller, the locked one-tenth of inner ring as a whole, thereby drives inner ring together to anticlockwise under the effect of elastic component and wedge shaped stop groove; When outer ring during to anticlockwise, owing under the space behavior of wedge shaped stop groove, the outer ring can be rotated around inner ring.When the outer ring drives inner ring at a high speed to right rotation, commutate rapidly or slow down in the outer ring, owing to needle roller, elastic component, retainer, inner ring are an integral body; The still equal fast anticlockwise of inner ring and needle roller; Do not receive acceleration and centrifugal action, needle roller and outer ring generation are slided, when this moment, the outer ring was commutated left-hand rotation or acceleration more rapidly; Outer ring, needle roller, the rapid clutch of inner ring meeting will occur, the outer ring drives inner ring and continues to right rotation.Because the outer ring rotating speed is very high, and grease is thrown toward the outer ring, can obtain sufficient lubrication when sliding between needle roller and the outer ring simultaneously, the bearing working life-span is improved greatly.And through elastic component being included connecting end and support end; Its support end includes locating point and is in the strong point of locating point both sides respectively, after being provided with like this, bearing high speed rotating with turn to when switching at a high speed; Elastic component is under the supporting of retainer; When elastic component received the needle roller impact force, needle roller flattened elastic component, and impact force is transferred on the retainer; Elastic component is in loading process, and elastic component shifts with the different stress points of distortion degree accordingly, and the anti-fatigue ability of elastic component and impact resistance are improved greatly, and the life-span prolongs greatly.
The utility model further is set to: retainer is provided with the cavity of some ccontaining needle rollers; Be provided with connection strap between each cavity; The connecting end of said elastic component is that cross section is down that " recessed " font and button be located at the framework on the connection strap, the side of connection strap conflict on the locating point of its support end and the retainer.
Adopt technique scheme, be provided with so rational in infrastructure, and the installation that has made things convenient for elastic component being set and having improved the shock resistance dynamics of elastic component of connection strap on the retainer.
The utility model further is set to: two strong point places of elastic component are provided with the flat press strip of conflicting with the needle roller side face respectively.
The suffered impact force of its two strong point is retarded and evenly when adopting technique scheme, the setting of flat press strip to guarantee further then that elastic component support end place obtains impacting, and effectively prevents the elastic component unbalance stress and causes fracture and damage.
Below in conjunction with accompanying drawing the utility model is further described.
Description of drawings
Fig. 1 is the utility model embodiment's a sectional perspective schematic representation;
Fig. 2 is the schematic perspective view of inner ring among the utility model embodiment;
Fig. 3 is the I portion enlarged diagram of Fig. 2;
Fig. 4 is the schematic perspective view of retainer among the utility model embodiment;
Fig. 5 is the schematic perspective view of elastic component among the utility model embodiment.
Embodiment
Like Fig. 1-a kind of unidirectional needle bearing shown in Figure 5; Include inner ring 1, and the outer ring 2 of inner ring 1 fit, be in retainer 3 between inner ring 1 and the outer ring 2, be located at plurality of elastic part 4 and some some needle rollers 5 on the retainer 3 along retainer 3 circumference uniform distributions; Need to prove; Retainer 3 is provided with the cavity 31 of some ccontaining needle rollers 5, and needle roller 5 is in the cavity 31 of retainer 3, and is provided with connection strap 32 between each cavity 31.Be evenly equipped with some wedge shaped stop groove 6 and retainer locating slots of arranging in the same way 11 on inner ring 1 and the needle roller 5 adjacent side faces that paste; Wedge shaped stop groove 6 includes movable end 61 and positive stop end 62; Its movable end 61 relative limit ends 62 more are lower than inner ring 1 and the needle roller 5 adjacent side faces that paste, and are connected through inclined-plane 63 between movable end 61 and the positive stop end 62; When needle roller 5 is in movable end 61 places of wedge shaped stop groove 6, leave the gap between needle roller 5 and the outer ring 2, when needle roller 5 was in positive stop end 62 places of wedge shaped stop groove 6, needle roller 5 was to conflict with outer ring 2 and cooperates; To obtain the location between retainer 3 and the inner ring 1 in order making, to make retainer 3 with inner ring 1 rotation, retainer 3 is provided with the positioning block 33 that extends in the inner ring 1 holder locating slot 11.In the relative existing technology of such scheme the wedge shaped stop groove is provided with on the outer ring; Have that clutch sensitivity is very high, the characteristics of long working life; Its working procedure is following: in use; Needle roller 5 and inner ring 1 run-in synchronism, needle roller 5 does not receive the effect of high speed centrifugation power, and needle roller 5 is very high with the 6 clutch sensitivity of inner ring 1 wedge shaped stop groove; And when outer ring 2 during to right rotation, needle roller 5 makes outer ring 2, needle roller 5, inner ring 1 locked one-tenth as a whole, thereby drives inner ring 1 together to anticlockwise under the effect of elastic component 4 and wedge shaped stop groove 6; When outer ring 2 during, because under the space behavior of wedge shaped stop groove 6, make the outer ring 2 can be around inner ring 1 rotation to anticlockwise.When outer ring 2 drove inner ring 1 high speed to right rotation, turned left or slow down in outer ring 2 switching-over rapidly, owing to needle roller 5, elastic component 4, retainer 3, inner ring 1 are an integral body; Inner ring 1 and the still equal fast anticlockwise of needle roller 5; Do not receive acceleration and centrifugal action, needle roller 5 and outer ring 2 generation slips are when rapid again switching-over left-hand rotation in outer ring 2 this moment or acceleration; Outer ring 2, needle roller 5, the rapid clutch of inner ring 1 meeting will occur, outer ring 2 drives inner rings 1 and continues to right rotation.Because outer ring 2 rotating speeds are very high, and grease is thrown toward outer ring 2, can obtain sufficient lubrication when sliding between needle roller 5 and the outer ring 2 simultaneously, the bearing working life-span is improved greatly.
Because the impact resistance and the antifatigue brute force of employed elastic component are relatively poor in the existing technology; Bearing carries out frequent at high speed rotating needle roller when turning to high frequency to switch to elastic component to be impacted; Make the elastic component easy deformation and the fracture of bearing, cause the function premature failure of bearing.In order to overcome existing defective in the above-mentioned existing technology; Elastic component 4 among the utility model embodiment includes connecting end 41 and support end 42; Its connecting end 41 is fixedly connected with retainer 3, and support end 42 is the semiarc shape supporting bar that is provided with towards needle roller 5 side faces, and this semiarc shape supporting bar includes locating point 421 and is in the strong point 422 of locating point 421 both sides respectively; Two strong points 422 are conflicted with needle roller 5, and locating point 421 is conflicted with retainer 3.After being provided with like this, bearing high speed rotating with turn to when switching at a high speed, elastic component 4 is under the supporting of retainer, when elastic component 4 received the needle roller impact force, needle roller 5 flattened elastic component 4, impact force is transferred on the retainer 3; Elastic component 4 is in loading process, and elastic component 4 shifts with the different stress points of distortion degree accordingly, and the anti-fatigue ability of elastic component 4 and impact resistance are improved greatly, and the life-span prolongs greatly.
In the utility model embodiment; The shock resistance dynamics of installation of elastic component 4 for ease and raising elastic component 4; The connecting end 41 of elastic component 4 is located at the framework on the connection strap for cross section for falling " recessed " font and button, and the side of connection strap 32 is conflicted on the locating point 421 of the support end 42 of elastic component 4 and the retainer 3, after being provided with like this; When 5 pairs of elastic components of needle roller 4 produce greater impact power during bearing working; The support end 42 of elastic component 4 produces deformation, and the elastic component 4 and the side of retainer 3 connection straps 32 are adjacent to, and the support end 42 of elastic component 4 is driven plain (promptly two strong points 422 are in the same plane with locating point 421); Impact force is transferred on the connection strap 32 of retainer 3, thereby improves the impact resistance of elastic component 4.
The suffered impact force of its two strong point 422 is retarded and evenly when guaranteeing that elastic component 4 support ends 42 places obtain impacting; Effectively prevent elastic component 4 unbalance stress and cause fracture and damage, two strong points, 422 places of elastic component 4 to be provided with the flat press strip 423 of conflicting respectively with needle roller 5 side faces.
Claims (3)
1. unidirectional needle bearing; Include inner ring, and the outer ring of inner ring fit, be in retainer between inner ring and the outer ring, be located at plurality of elastic part and some some needle rollers on the retainer along the retainer circumference uniform distribution; It is characterized in that: be evenly equipped with some wedge shaped stop groove and retainer locating slots of arranging in the same way on the adjacent side face that pastes of said inner ring and needle roller; The wedge shaped stop groove includes movable end and positive stop end; Its movable end relative limit end more is lower than the adjacent side face that pastes of inner ring and needle roller, and is connected through the inclined-plane between movable end and the positive stop end; When described needle roller is in the movable end place of wedge shaped stop groove, leave the gap between needle roller and the outer ring, when needle roller was in the positive stop end place of wedge shaped stop groove, needle roller was to conflict with the outer ring and cooperates; Described retainer is provided with the positioning block that extends in the inner ring holder locating slot; Described elastic component includes connecting end and support end; Its connecting end is fixedly connected with retainer; Support end is the semiarc shape supporting bar that is provided with towards the needle roller side face; This semiarc shape supporting bar includes locating point and is in the strong point of locating point both sides respectively, and two strong points and needle roller are conflicted, and locating point and retainer are conflicted.
2. unidirectional needle bearing according to claim 1; It is characterized in that: described retainer is provided with the cavity of some ccontaining needle rollers; Be provided with connection strap between each cavity; The connecting end of said elastic component is that cross section is down that " recessed " font and button be located at the framework on the connection strap, the side of connection strap conflict on the locating point of its support end and the retainer.
3. unidirectional needle bearing according to claim 1 and 2 is characterized in that: two strong point places of said elastic component are provided with the flat press strip of conflicting with the needle roller side face respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202011568U CN202165432U (en) | 2011-06-15 | 2011-06-15 | One-way needle bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202011568U CN202165432U (en) | 2011-06-15 | 2011-06-15 | One-way needle bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165432U true CN202165432U (en) | 2012-03-14 |
Family
ID=45801259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202011568U Expired - Fee Related CN202165432U (en) | 2011-06-15 | 2011-06-15 | One-way needle bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165432U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889319A (en) * | 2012-10-20 | 2013-01-23 | 无锡市神力齿轮冷挤有限公司 | Unidirectional needle bearing |
| WO2015144005A1 (en) * | 2014-03-24 | 2015-10-01 | Shanghai Changyi Machinery Manufacture Co., Ltd | A one-way bearing |
| CN105673727A (en) * | 2016-03-24 | 2016-06-15 | 无锡市神力齿轮冷挤有限公司 | One-way clutch capable of preventing two-way sliding caused by failure of supporting springs |
| CN108757724A (en) * | 2018-08-18 | 2018-11-06 | 苏州金诚轴承有限公司 | A kind of unilateral bearing that mounted and high-speed uses |
| WO2020063467A1 (en) * | 2018-09-28 | 2020-04-02 | 林明 | Load holder for keeping high load parallelism and bearing |
-
2011
- 2011-06-15 CN CN2011202011568U patent/CN202165432U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889319A (en) * | 2012-10-20 | 2013-01-23 | 无锡市神力齿轮冷挤有限公司 | Unidirectional needle bearing |
| WO2015144005A1 (en) * | 2014-03-24 | 2015-10-01 | Shanghai Changyi Machinery Manufacture Co., Ltd | A one-way bearing |
| US10415657B2 (en) | 2014-03-24 | 2019-09-17 | Shanghai Changyi Machinery Manufacture Co., Ltd | One-way bearing |
| CN105673727A (en) * | 2016-03-24 | 2016-06-15 | 无锡市神力齿轮冷挤有限公司 | One-way clutch capable of preventing two-way sliding caused by failure of supporting springs |
| CN105673727B (en) * | 2016-03-24 | 2018-07-27 | 无锡市神力齿轮冷挤有限公司 | It can prevent from failing the one-way clutch of two-way skidding because of support spring |
| CN108757724A (en) * | 2018-08-18 | 2018-11-06 | 苏州金诚轴承有限公司 | A kind of unilateral bearing that mounted and high-speed uses |
| WO2020063467A1 (en) * | 2018-09-28 | 2020-04-02 | 林明 | Load holder for keeping high load parallelism and bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Renben Large-scale Bearing Co., Ltd. Assignor: Wenzhou Mute Bearing Co., Ltd. Contract record no.: 2012330000064 Denomination of utility model: Unidirectional needle bearing with support Granted publication date: 20120314 License type: Exclusive License Record date: 20120309 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20120314 Termination date: 20190615 |