CN203161894U - Roller type overrun clutch - Google Patents
Roller type overrun clutch Download PDFInfo
- Publication number
- CN203161894U CN203161894U CN 201220675808 CN201220675808U CN203161894U CN 203161894 U CN203161894 U CN 203161894U CN 201220675808 CN201220675808 CN 201220675808 CN 201220675808 U CN201220675808 U CN 201220675808U CN 203161894 U CN203161894 U CN 203161894U
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- annular
- roller
- grooves
- friction
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- Expired - Fee Related
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- 210000002435 tendon Anatomy 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
A roller type overrun clutch includes an outer ring, a star wheel and rollers arranged therebetween which form a driving part, wherein at least one annular groove is formed in the friction surface of each roller, and the friction surface of the outer ring and the star wheel is the surface matched with each annular groove; the annular grooves are annular grooves with curved surfaces; and the friction surface of the outer ring and the star wheel is annular convex ribs with curved surfaces, matched with the annular grooves with curved surfaces. According to the utility model, the grooves are formed in the friction surface of the clutch to enlarge the friction area, increase the friction force, reduce the size of the friction clutch and further reduce the cost of the friction cost; and due to the arrangement that the annular V-type grooves are matched with the annular V-type convex ribs, when the annular V-type grooves are fully clung to the annular V-type convex ribs (the included angles of the V-type grooves and the annular V-type convex ribs are identical), the average width of the V-type convex ribs is slightly larger than that of the V-type grooves, arcs are arranged at the top ends of the V-type convex ribs, the grooves generate huge clamping force as long as the V-type convex ribs slightly move forwards, the friction force is effectively transmitted, the size of the friction clutch is further reduced, and the cost of the friction clutch is reduced.
Description
Technical field
The utility model relates between prime mover and the working machine or the vitals of transmission of power and separation function between machine intimate driving shaft and the driven shaft, specifically is exactly a kind of roller-type overrunning clutch.
Background technique
Free wheel device is the basic part that occurs along with the development of electromechanical integrated product, and it is to be the conversion that utilizes velocity variations or the sense of rotation of driving and driven part for it, has the device of clutch function voluntarily.
Free wheel device is divided into Wedge type over running clutch, roller-type overrunning clutch and ratchet type overrunning clutch.
The voussoir free wheel device replaces roller as the wedging part with special-shaped voussoir, is a kind of clutch of forming friction pair with voussoir and inside and outside raceway.Do not have relative movement when between interior ring, outer shroud and voussoir, turn to identically, rotating speed equates, could transmitting torque, otherwise be relative slip, this sliding mode that does not pass fast torque is called and surmounts.The voussoir free wheel device mainly contains basic model, no inner ring type and band bearing type.Its Connecting format is divided into key connection, gear connection, belt wheel connection, sprocket wheel connection, bolt connection etc.
The roller-type overrunning clutch root in it yoke (star-wheel) position difference be divided into two kinds of out star wheel and star-wheels, so-called yoke refers to the conjugate planes of cylinder and cylindrical hole, and star-wheel is the part with the groove that holds roller.For the ease of processing with guarantee machining accuracy, being widely adopted of star-wheel formula.Press the shape difference of star-wheel working surface, can be divided into three kinds on plane, logarithm helicoid type and eccentric circle cylinder type etc. again.Wherein plane processing is simple, be widely used, but its wedge feeler do not change with different change of contact position with the roller wearing and tearing, but processing is difficult; The processing complexity of eccentric circle cylinder, usability, life-span all occupy between the former two.
The key of roller-type overrunning clutch is, do not have relative movement because of frictional force when between interior ring, outer shroud and roller, turns to identically, and rotating speed equates, could transmitting torque, so the frictional force that produces between ring, outer shroud and voussoir in increasing is crucial.
Summary of the invention
In order to increase the frictional force that produces between interior ring, outer shroud and the voussoir, the utility model provides a kind of roller-type overrunning clutch.
The utility model is achieved in that a kind of roller-type overrunning clutch, comprises outer shroud, star-wheel, and the roller therebetween of active part, and the rubbing surface of roller arranges at least one annular ditch groove, the face of the rubbing surface of outer shroud, star-wheel for matching with annular ditch groove; Described annular ditch groove is ring-type V-shape groove, the ring-type V-shape convex tendon face of the rubbing surface of outer shroud, star-wheel for matching with ring-type V-shape groove.
Described roller-type overrunning clutch, the numerical value of described ring-type V-shape convex tendon mean breadth are greater than the numerical value of ring-type V-shape groove mean breadth, and ring-type V-shape convex tendon top is circular arc.
Described roller-type overrunning clutch, described annular ditch groove quantity are one of 2,3,4,5,6.
Described roller-type overrunning clutch, described annular ditch groove is arranged on the rubbing surface of outer shroud, star-wheel, and described ring-type V-shape convex tendon is arranged on the rubbing surface of roller.
The rubbing surface of clutch of the present utility model is established groove, has increased friction area, just can produce big frictional force, just can reduce the volume of friction clutch, reduces the cost of friction clutch.Cooperate ring-type V-shape convex tendon for ring-type V-shape groove, when ring-type V-shape groove is adjacent to fully with ring-type V-shape convex tendon (the two angle is identical), because the numerical value of V-shape convex tendon mean breadth is less times greater than the numerical value of V-shape groove mean breadth, V-shape convex tendon top is circular arc, the V-shape convex tendon moves forward a little again, and groove just produces huge clamping force, can effectively transmit frictional force, further reduce the volume of friction clutch, reduce the cost of friction clutch.
Description of drawings
Fig. 1 is the roller-type overrunning clutch plan view.
Fig. 2 is roller-type overrunning clutch curved surface rubbing surface structural representation.
Fig. 3 is roller-type overrunning clutch V font rubbing surface structural representation.
Embodiment
As Fig. 1-3, a kind of roller-type overrunning clutch comprises outer shroud 1, star-wheel 2, and the roller 3 therebetween of active part, and the rubbing surface of roller arranges at least one annular ditch groove, the face of the rubbing surface of outer shroud, star-wheel for matching with annular ditch groove.
Roller-type overrunning clutch as described in Figure 2, described annular ditch groove is ring-type curved surface groove 31, and the rubbing surface of outer shroud is the face ring-type curved surface convex tendon 11 that matches with the ring-type curved surface groove, the ring-type curved surface convex tendon face 21 of rubbing surface for matching with the ring-type curved surface groove of star-wheel.
Roller-type overrunning clutch as described in Figure 3, described annular ditch groove is ring-type V-shape groove 33, and the rubbing surface of outer shroud is the ring-type V-shape convex tendon face 13 that matches with ring-type V-shape groove, the ring-type V-shape convex tendon face 23 of rubbing surface for matching with ring-type V-shape groove of star-wheel.
Described roller-type overrunning clutch, the numerical value of described V-shape convex tendon mean breadth are greater than the numerical value of V-shape groove mean breadth, and V-shape convex tendon top is circular arc.
Described roller-type overrunning clutch, described annular ditch groove quantity are one of 2,3,4,5,6.
Described roller-type overrunning clutch, described annular ditch groove is arranged on the rubbing surface of outer shroud, star-wheel, and described ring-type convex tendon is arranged on the rubbing surface of roller.
Claims (4)
1. roller-type overrunning clutch comprises outer shroud, star-wheel, and the roller therebetween of active part, and it is characterized in that: the rubbing surface of roller arranges at least one annular ditch groove, the face of the rubbing surface of outer shroud, star-wheel for matching with annular ditch groove; Described annular ditch groove is ring-type V-shape groove, the ring-type V-shape convex tendon face of the rubbing surface of outer shroud, star-wheel for matching with ring-type V-shape groove.
2. roller-type overrunning clutch as claimed in claim 1, it is characterized in that: the numerical value of described ring-type V-shape convex tendon mean breadth is greater than the numerical value of ring-type V-shape groove mean breadth, and ring-type V-shape convex tendon top is circular arc.
3. as the described roller-type overrunning clutch of one of claim 1-2, it is characterized in that: described annular ditch groove quantity is one of 2,3,4,5,6.
4. as the described roller-type overrunning clutch of one of claim 1-2, it is characterized in that: described annular ditch groove is arranged on the rubbing surface of outer shroud, star-wheel, and described ring-type V-shape convex tendon is arranged on the rubbing surface of roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675808 CN203161894U (en) | 2012-12-10 | 2012-12-10 | Roller type overrun clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675808 CN203161894U (en) | 2012-12-10 | 2012-12-10 | Roller type overrun clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161894U true CN203161894U (en) | 2013-08-28 |
Family
ID=49023080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675808 Expired - Fee Related CN203161894U (en) | 2012-12-10 | 2012-12-10 | Roller type overrun clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402274A (en) * | 2015-11-28 | 2016-03-16 | 重庆华洋单向器制造有限公司 | Encircling overrun clutch |
-
2012
- 2012-12-10 CN CN 201220675808 patent/CN203161894U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402274A (en) * | 2015-11-28 | 2016-03-16 | 重庆华洋单向器制造有限公司 | Encircling overrun clutch |
| CN105402274B (en) * | 2015-11-28 | 2017-09-15 | 重庆华洋单向器制造有限公司 | A kind of encircling type isolator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20141210 |
|
| EXPY | Termination of patent right or utility model |