CN101328938B - Tri-state overrunning clutch - Google Patents
Tri-state overrunning clutch Download PDFInfo
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- CN101328938B CN101328938B CN2007101234514A CN200710123451A CN101328938B CN 101328938 B CN101328938 B CN 101328938B CN 2007101234514 A CN2007101234514 A CN 2007101234514A CN 200710123451 A CN200710123451 A CN 200710123451A CN 101328938 B CN101328938 B CN 101328938B
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- overrun clutch
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Abstract
The invention provides a tristate superior clutch, which comprises an outer ring, an inner ring, a plurality of wedgy blocks positioned between the outer ring and the inner ring and an outer retaining frame and an inner retaining frame which are positioned between the outer ring and inner ring and used for retaining the blocks. A plurality of circular arc grooves are arranged on a working face of the outer ring; each circular arc groove is matched with a working face of the corresponding wedgy block and retains the working face in the circular arc groove. The inner retaining frame is provided with a plurality of convex plates which extend outwards along the axial direction; each convex plate is provided with an oblique hole which is oblique corresponding to the axial direction. A poking disc which can slide in the axial direction is arranged on the peripheral surface of the outer ring; a plurality of poke rods which are respectively inserted into the corresponding oblique hole are fixed on the poking disc. Through moving the poke rods of the poking disc to control the wedgy blocks to fully leave a working face of the inner ring, the outer ring and the inner ring can freely rotate in a positive direction and a negative direction, thereby obtaining a bidirectional separation working state of the tristate superior clutch.
Description
Technical field
The present invention relates to a kind of free wheel device, relate in particular to a kind of tri-state overrun clutch, it can be controlled the inner ring of free wheel device and outer ring and throw off fully each other and can freely rotate at positive and negative both direction.
Background technique
Free wheel device is called overrunning clutch or unilateral bearing again, be a kind of can only be at the device of a sense of rotation transmitting torque.Existing overrun mainly comprises roller-type overrunning clutch and Wedge type over running clutch.
An example as Wedge type over running clutch, CN 2476675Y (perhaps CN 1430000A) discloses a kind of free wheel device with two retainers, this free wheel device comprises inner ring and outer ring, between inside and outside circle, be provided with a plurality of voussoirs, and these voussoirs are kept by the retaining hole of offering in the two retainers between the inside and outside circle (retainer and outer retainer in comprising).In this free wheel device,, can improve the bearing capacity of free wheel device and prolong its working life by using two retainer structures.
But in existing overrun, all be to surmount state and wedging state by what relatively rotating between the inside and outside circle realized free wheel device, clutch itself does not have additional mechanism that the working position of voussoir is controlled, therefore the problem that exists is, free wheel device only has mono-directional overrun state and unidirectional wedging state, function singleness.In some concrete engineering machinery applications, need free wheel device under the situation of high speed rotating, driving link separates fully with driven member, and promptly initiatively, driven member can mutual noninterference, and the mono-directional overrun of free wheel device has limited this function.Simultaneously, clutch is surmounting state at a high speed, and voussoir contacts with inside and outside circle, so wearing and tearing are arranged, the problem of heating exists, and influences its working life.
Summary of the invention
The object of the present invention is to provide a kind of tri-state overrun clutch, it not only has the function of common mono-directional overrun clutch, and can realize that outer ring and inner ring are in positive and negative two-way working state of all throwing off (being that inside and outside circle is positive and negative two-way can both freely the rotation) fully, promptly two-way separated state.
To achieve these goals, the invention provides a kind of tri-state overrun clutch, this tri-state overrun clutch comprises the outer ring, inner ring, a plurality of voussoirs between outer ring and inner ring are between outer ring and inner ring and keep the outer retainer and the interior retainer of described a plurality of voussoirs.Have a plurality of arc grooves on the working surface of described outer ring, each arc groove matches with a working surface of a corresponding voussoir, and a described working surface is remained in this arc groove.Retainer has axially outwardly directed a plurality of lugs in described, has the inclined hole with respect to axioversion on each lug.Have on the excircle of described outer ring and axially slidably stir dish, this is stirred and is fixed with a plurality of turning levers that are inserted into separately in the corresponding inclined hole on the dish.
In this tri-state overrun clutch, can obtain two working positions of this clutch, three kinds of working staties, promptly common wedging working position (this position has mono-directional overrun and two kinds of working staties of unidirectional wedging) and the two-way mask work position of surmounting.
Particularly, stir dish by control and endwisely slip on outer shroud, the turning lever of stirring dish slides in inclined hole.Because retainer rotated corresponding angle with respect to the outer ring in inclined hole with respect to the axis tilt several angle, therefore can drive.Simultaneously, because a working surface of voussoir is maintained in the arc groove on the working surface of outer ring, so will between inside and outside circle, rotate corresponding angle around described arc groove by the voussoir that inside and outside retainer kept, can control voussoir thus and leave the inner ring working surface fully, make outer ring and inner ring two-wayly freely to rotate, obtain the two-way mask work state of this clutch positive and negative.Otherwise,, then can control voussoir and return to and commonly surmount the wedging working position, thereby obtain the mono-directional overrun or the unidirectional wedging working state of this clutch if reverse operating is stirred dish.
Because this clutch is the extra working state (two-way separated state) that increases on the basis of traditional mono-directional overrun clutch, therefore this free wheel device can be called as tri-state overrun clutch.When using this tri-state overrun clutch, can use separated state to replace surmounting state in some cases, thus the wearing and tearing under can avoiding at a high speed, the working life of improving clutch; Conversion is smooth-going between two working positions under fast state, and noise is little, and reliability improves; Can also be for double dynamical input provide adequate condition, inside and outside circle can connect two power sources, and two power sources can be exported respectively or synthetic output; Clutch is operated in two-way separated state can avoid the anti-driving link that drags of driven member.
Supplementary features of the present invention and corresponding advantages embodiment below partly describes.
Description of drawings
Fig. 1 is the sectional view of a kind of tri-state overrun clutch of the present invention.
Fig. 2 is the local amplification view of tri-state overrun clutch of the present invention.
Fig. 3 is the partial view of outer ring in the tri-state overrun clutch of the present invention.
Fig. 4 is the assembling stereogram that maintains the inside and outside retainer of voussoir in the tri-state overrun clutch of the present invention.
Fig. 5 is the stereogram of stirring dish that has turning lever in the tri-state overrun clutch of the present invention.
Fig. 6 is the stereogram of tri-state overrun clutch of the present invention, wherein to have removed and has stirred dish in order to know.
Fig. 7 is the stereogram according to a kind of preloading spring of the present invention.
Embodiment
With reference to the accompanying drawings the specific embodiment of the present invention is described in detail.
As shown in the figure, a kind of tri-state overrun clutch provided by the invention comprises outer ring 1, inner ring 2, a plurality of voussoirs 3 between outer ring 1 and inner ring 2 are between outer ring 1 and inner ring 2 and for example keep the outer retainer 41 and the interior retainer 42 of described a plurality of voussoir 3 by retaining hole.Have a plurality of arc grooves 11 on the working surface of described outer ring 1, each arc groove 11 matches with a working surface 31 of a corresponding voussoir 3, and a described working surface 31 is remained in this arc groove 11.Retainer 42 has axially outwardly directed a plurality of lugs 6 in described, has the inclined hole 61 with respect to axioversion on each lug 6.Have on the excircle of described outer ring 1 and axially slidably stir dish 8, this is stirred and is fixed with a plurality of turning levers 81 that are inserted into separately in the corresponding inclined hole 61 on the dish 8.
As shown in Figures 2 and 3, have a plurality of arc grooves 11 on the working surface of described outer ring 1, each arc groove 11 (is referred to as " first working surface 31 " below with a working surface 31 of a corresponding voussoir 3, simultaneously another working surface opposite with this first working surface 31 on the voussoir 3 is called " second working surface 32 ") match, and this first working surface 31 is remained in the arc groove 11.This first working surface 31 can be used as pivot pin end, thereby voussoir 3 can rotate around this pivot pin end between Internal and external cycle.
As shown in Figure 4, have axially outwardly directed a plurality of lugs 6 on the retainer 42 in described, have inclined hole 61 on each lug 6, stir turning lever 81 on the dish 8 can in this inclined hole 61, slide (Fig. 1 and Fig. 6) with respect to axioversion.By the interaction between interior retainer 42 and the arc groove 11, voussoir 3 can center on its pivot pin end (being described first working surface 31) and rotate between Internal and external cycle, thereby makes on the voussoir 3 second working surface 32 opposite with described first working surface 31 correspondingly contact or leave the working surface of inner ring 2.
As shown in Figure 4, can offer the reaming 62 that width increases at an end of inclined hole 61.In this case, when needs tri-state overrun clutch of the present invention uses as traditional mono-directional overrun clutch, the turning lever of stirring on the dish 8 81 is moved in this reaming 62, can prevent to influence the proper functioning of free wheel device thus owing to misoperation.As a kind of substitute mode, the outer end of inclined hole 61 can be arranged to open wide, and this also can realize this security function to a certain extent.
In addition, first working surface, 31 stable remaining in the arc groove 11 in order to ensure voussoir 3, can between inner ring 2 and outer ring 1, preloading spring 5 be set, be used to produce pretightening force described first working surface 31 is pressed in the described arc groove 11, and can make described voussoir 3 that a kind of trend of rotating towards the wedging direction is arranged.Figure 7 shows that a kind of spring band, it can be used as this preloading spring 5 and uses.As shown in Figure 7, have spring sheet 51 on this spring band or the preloading spring 5, have and push voussoir 3 to arc groove 11, and allow voussoir 3 that a kind of trend of rotating towards the wedging direction is arranged.Preloading spring 5 of the present invention can use various elastic members, be not limited to this concrete spring band, as long as can produce pretightening force first working surface 31 of voussoir 3 is pressed in the arc groove 11, and can makes voussoir 3 have a kind of trend of rotating to get final product towards the wedging direction.
In the time need regulating or control, can on outer ring 1, be in axial sliding by controlling above-mentioned dish 8 (as a kind of control mechanisms) of stirring to the position of the voussoir 3 between outer ring 1 and the inner ring 2.When stirring dish 8 when endwisely slipping, the turning lever of stirring on the dish 8 81 can slide in inclined hole 61 (Fig. 4).Because retainer 412 rotated corresponding angle with respect to outer ring 1 in inclined hole 61 with respect to the axis tilt several angle, therefore can drive.Simultaneously, because first working surface 31 of voussoir 3 is securely held in the arc groove 11 on the working surface of outer ring 1, so the voussoir 3 that is kept by interior retainer 42 and outer retainer 41 just can rotate corresponding angle around described first working surface 31 between inside and outside circle, thereby can cause second working surface 32 on the voussoir 3 correspondingly to leave the working surface of inner ring 2, inside and outside thus circle can freely rotate in the two-way realization of pros, promptly realizes the third working state of free wheel device.
In addition, can also provide biasing element such as spring (not shown), be used for and will stir the end that the turning lever 81 that coils on 8 remains on inclined hole 61 for tri-state overrun clutch of the present invention, for example the inner or outer end (reaming), this can select as required.Thereby, by this biasing element, can make tri-state overrun clutch remain on certain state under normal conditions, as surmount state or separated state, and when needs change the state of free wheel device, can stir dish 8 by driving and move axially and realize.
As shown in Figure 1, described outer ring 1 can be configured to the shape of a secondary multidiameter shaft, will stir dish 8 simultaneously and be arranged on the small diameter portion of this multidiameter shaft, can make the structure of free wheel device compact more thus.In the case, as shown in Figure 6, at the step part of multidiameter shaft a plurality of windows 12 should be set correspondingly, the lug 6 in making on the retainer 42 can pass corresponding window 12 and stretch out.In addition, inner ring 2 also can be configured to the shape with described outer ring 1 corresponding secondary multidiameter shaft, thereby can make the structure of free wheel device compact more.
According to the present invention, stir that dish 8 endwisely slips, circumferentially locking can be realized by any suitable means on the excircle of outer ring 1, for example can be by habitual strong-groove combination, perhaps spline connects.As shown in Figure 5 and Figure 6, as a kind of embodiment of the present invention, can corresponding axial raceway 83,13 be set respectively described stirring on dish 8 the internal surface and on the outer surface of described outer ring 1, and in described raceway 83,13, a plurality of rollers 84 are set, for example steel ball can be realized stirring dish 8 thus easily and endwisely slip on the excircle of outer ring 1.
Stir dish and 8 can drive by any suitable means well known in the art, for example can by manual, electronic, surge, pneumatic or the like means realize.As a kind of embodiment of the present invention, stirring dish 8 can endwisely slip on the excircle of outer ring 1 by shifting fork mechanism or electromagnetic mechanism driving.
As shown in Figure 1, can between inner ring 2 and outer ring 1, bearing 7 be set, this bearing 7 can be fixed by the shaft shoulder on inner ring 2 and the outer ring 1 and/or back-up ring 10 respectively, thereby can realize the accurate location radially between inner ring 2 and the outer ring 1, guarantees that free wheel device is stable, works reliably.
In addition, as shown in Figure 1, inner ring 2 and outer ring 1 can have one or more connecting end, and for example threaded ends or gear connecting end are used to connect outside driving part and driven member.
By specific embodiment the embodiment of tri-state overrun clutch of the present invention is had been described in detail above, but the present invention is not limited to above-mentioned concrete structure.
For example, suitably adjust by structure tri-state overrun clutch of the present invention, can on the working surface of inner ring 2, arc groove be set, first working surface 31 of voussoir 3 is remained in the arc groove on inner ring 2 working surfaces, adjust the relative position of outer retainer 41 by stirring dish 8 or other regulating mechanism simultaneously, thereby realize the diverse location of voussoir in the free wheel device is controlled with respect to inner ring 2.
The interior retainer 41 and the outer retainer 42 that constitute two retainer structures can adopt any suitable technique in the prior art.And,, also can only use a retainer in the present invention as a kind of mode of execution of replacement.
Under the situation of using two retainers, one of them retainer can also be fixed, and another retainer can rotate, thereby, also can realize control the voussoir position by relatively rotating between two retainers.Adopt this mode, then need on the working surface of inner ring or outer ring, arc groove be set.
In addition, the present invention does not limit the quantity and the position of lug 6 and turning lever 81 in principle, but considers that factors such as functional reliability and processing cost, lug 6 and turning lever 81 preferably are arranged to 3 to 4 and upwards evenly distribute in week.Voussoir 3 can adopt any suitable voussoir structure and quantity thereof in the prior art.
This shows, in the scope of spirit of the present invention, can make various modifications or replacement, but these modifications or replacement all will fall within protection scope of the present invention the concrete structure of tri-state overrun clutch of the present invention.
Claims (8)
1. tri-state overrun clutch, this tri-state overrun clutch comprises outer ring (1), inner ring (2), be positioned at a plurality of voussoirs (3) between outer ring (1) and the inner ring (2), be positioned between outer ring (1) and the inner ring (2) and keep the outer retainer (41) and the retainer (42) of described a plurality of voussoir (3), it is characterized in that:
Have a plurality of arc grooves (11) on the working surface of described outer ring (1), each arc groove (11) matches with first working surface (31) of a corresponding voussoir (3), and described first working surface (31) is remained in this arc groove (11);
Retainer (42) has axially outwardly directed a plurality of lugs (6) in described, has the inclined hole (61) with respect to axioversion on each lug (6); And
Have on the excircle of described outer ring (1) and axially slidably stir dish (8), this is stirred and is fixed with a plurality of turning levers (81) that are inserted into separately in the corresponding inclined hole (61) on the dish (8).
2. tri-state overrun clutch according to claim 1, an end of wherein said inclined hole (61) have the reaming (62) that width increases.
3. tri-state overrun clutch according to claim 1, wherein:
Between described outer ring (1) and inner ring (2), has preloading spring (5), this preloading spring (5) generation pretightening force is pressed in described first working surface (31) of described voussoir (3) in the described arc groove (11), make described voussoir (3) have the trend of rotating, and guarantee the work conformity of described a plurality of voussoir (3) towards the wedging direction.
4. tri-state overrun clutch according to claim 1, wherein said outer ring (1) is the multidiameter shaft of a secondary, the described dish (8) of stirring is arranged on the small diameter portion of described multidiameter shaft;
And wherein, the step part of described multidiameter shaft has a plurality of windows (12), and described lug (6) passes corresponding window (12) and stretches out.
5. tri-state overrun clutch according to claim 4, wherein said inner ring (2) are the multidiameter shafts with the corresponding secondary in described outer ring (1).
6. tri-state overrun clutch according to claim 1, wherein have corresponding axial raceway (83,13) respectively on the described internal surface of stirring dish (8) and on the outer surface of described outer ring (1), and in described raceway (83,13), having roller (84).
7. tri-state overrun clutch according to claim 1 wherein has bearing (7) between outer ring (1) and inner ring (2), described bearing (7) is fixing by the shaft shoulder on inner ring (2) and outer ring (1) and/or back-up ring (10) respectively.
8. tri-state overrun clutch according to claim 1, wherein said outer ring (1) and described inner ring (2) have connecting end, are used to connect outside power source or transmission device.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101234514A CN101328938B (en) | 2007-06-22 | 2007-06-22 | Tri-state overrunning clutch |
| PCT/CN2008/071087 WO2008154830A1 (en) | 2007-06-19 | 2008-05-26 | Tri-state overrunning clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101234514A CN101328938B (en) | 2007-06-22 | 2007-06-22 | Tri-state overrunning clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101328938A CN101328938A (en) | 2008-12-24 |
| CN101328938B true CN101328938B (en) | 2010-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101234514A Active CN101328938B (en) | 2007-06-19 | 2007-06-22 | Tri-state overrunning clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101328938B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107303806B (en) * | 2016-04-19 | 2022-06-24 | 舍弗勒技术股份两合公司 | Power coupling device for hybrid electric vehicle |
| CN111188852B (en) * | 2020-02-25 | 2021-06-18 | 中国航发南方工业有限公司 | Clutch jacket assembly, overrunning clutch and speed reducer |
| CN115076253A (en) * | 2022-06-10 | 2022-09-20 | 福建中青传动科技有限公司 | Controllable multi-state overrunning clutch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4635771A (en) * | 1984-01-21 | 1987-01-13 | Nsk-Warner K. K. | One-way clutch bearing |
| CN2476675Y (en) * | 2001-05-30 | 2002-02-13 | 许水电 | Loader biaxial assembly one-way clutch |
| CN1430000A (en) * | 2003-02-13 | 2003-07-16 | 许水电 | Double holding frame overdrive clutch |
| WO2006029143A1 (en) * | 2004-09-07 | 2006-03-16 | Timken Us Corporation | Selectable mode clutch |
| JP2006170372A (en) * | 2004-12-17 | 2006-06-29 | Jtekt Corp | One-way clutch |
-
2007
- 2007-06-22 CN CN2007101234514A patent/CN101328938B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4635771A (en) * | 1984-01-21 | 1987-01-13 | Nsk-Warner K. K. | One-way clutch bearing |
| CN2476675Y (en) * | 2001-05-30 | 2002-02-13 | 许水电 | Loader biaxial assembly one-way clutch |
| CN1430000A (en) * | 2003-02-13 | 2003-07-16 | 许水电 | Double holding frame overdrive clutch |
| WO2006029143A1 (en) * | 2004-09-07 | 2006-03-16 | Timken Us Corporation | Selectable mode clutch |
| JP2006170372A (en) * | 2004-12-17 | 2006-06-29 | Jtekt Corp | One-way clutch |
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| Publication number | Publication date |
|---|---|
| CN101328938A (en) | 2008-12-24 |
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