CN100595448C - Tri-state overrunning clutch - Google Patents
Tri-state overrunning clutch Download PDFInfo
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- CN100595448C CN100595448C CN200710111536A CN200710111536A CN100595448C CN 100595448 C CN100595448 C CN 100595448C CN 200710111536 A CN200710111536 A CN 200710111536A CN 200710111536 A CN200710111536 A CN 200710111536A CN 100595448 C CN100595448 C CN 100595448C
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- retainer
- working surface
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- voussoir
- inner ring
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Abstract
The invention relates to a tristate superior clutch comprising an outer ring, an inner ring, a plurality of wedgy blocks positioned between the outer ring and the inner ring and a retaining frame which is positioned between the outer ring and inner ring and used for retaining the wedgy blocks; a first working face of the wedgy blocks permanently contacts one of the working faces of the outer ringand the inner ring and can make a second working face of the wedgy blocks contact or leave the other working face of the working faces of the outer ring and the inner ring through rotation. Through controlling the wedgy blocks to fully leave the other working face, 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; through controlling the wedgy blocks to restore a common superior wedging working position, an unidirectional superior working state or a unidirectional wedging working state of the tristate superior clutch is obtained.
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, the retainer that between outer ring and inner ring, keeps described a plurality of voussoirs, a working surface among the working surface of the described outer ring of the permanent contact of first working surface of described a plurality of voussoirs and the working surface of described inner ring, and can make second working surface contact of described a plurality of voussoirs by the rotation of described retainer or leave the working surface of described outer ring and the working surface of described inner ring among another working surface, thereby 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.
Leave another working surface among the working surface of the working surface of described outer ring and described inner ring by the control voussoir 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; Return to the common wedging working position that surmounts by the control voussoir, obtain the mono-directional overrun or the unidirectional wedging working state of this clutch.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 according to the tri-state overrun clutch of first embodiment of the invention.
Fig. 2 is the sectional view according to the tri-state overrun clutch of second embodiment of the invention.
Fig. 3 is the sectional view according to the tri-state overrun clutch of third embodiment of the invention.
Fig. 4 is the sectional view according to the tri-state overrun clutch of fourth embodiment of the invention.
Fig. 5 is the structural representation according to the tri-state overrun clutch of fifth embodiment of the invention.
Fig. 6 is the structural representation according to the tri-state overrun clutch of sixth embodiment of the invention.
Fig. 7 is the stereogram according to a retainer of the present invention, and this retainer has slider.
Fig. 8 is the stereogram according to a kind of preloading spring of the present invention.
Embodiment
The invention provides a kind of tri-state overrun clutch, this tri-state overrun clutch comprises outer ring 1, inner ring 2, a plurality of voussoirs 3 between outer ring 1 and inner ring 2, the retainer 4 of the described a plurality of voussoirs 3 of maintenance between outer ring 1 and inner ring 2.A working surface among the working surface of the described outer ring 1 of the permanent contact of first working surface 31 of described a plurality of voussoir 3 and the working surface of described inner ring 2, and can make second working surface 32 of described a plurality of voussoirs 3 contact or leave another working surface among the working surface of the working surface of described outer ring 1 and described inner ring 2 by the rotation of retainer 4.In use, leave described another working surface, can realize outer ring 1 and inner ring 2, thereby realize the two-way separated state of tri-state overrun clutch of the present invention in positive and negative two-way all disengagements fully by second working surface 32 of controlling voussoir 3; Also can make it be returned to common mono-directional overrun wedging working position, thereby recover the function of common mono-directional overrun clutch by control voussoir 3.
Those skilled in the art with reference to the accompanying drawings specific embodiments of the invention are described in detail, so that can more be expressly understood the present invention.
First embodiment
Fig. 1 is the sectional view according to the tri-state overrun clutch of first embodiment of the invention.This tri-state overrun clutch comprises outer ring 1, inner ring 2, and a plurality of voussoirs 3 between outer ring 1 and inner ring 2 are between outer ring 1 and inner ring 2 and keep a retainer 4 of described a plurality of voussoir 3 by retaining hole.The working surface of the described outer ring 1 of first working surface, 31 permanent contacts of described a plurality of voussoir 3, and can make second working surface 32 of described a plurality of voussoir 3 contact or leave the working surface of described inner ring 2 by rotation.
Particularly, have a plurality of arc grooves 11 on the working surface of described outer ring 1, each arc groove 11 matches with described first working surface 31 of a corresponding voussoir 3, and this first working surface 31 is remained in the arc groove 11.
As shown in Figure 7, described retainer 4 has axially outwardly directed a plurality of lugs 6, has the inclined hole 61 with respect to axioversion on each lug 6, and have vertically slidably slider 7 in described inclined hole 61.That is, by the interaction of retainer 4 with arc groove 11, voussoir 3 can rotate around first working surface 31 that remains in the arc groove 11, thereby contacts or leave the working surface of inner ring 2.
Inclined hole 61 on the lug 6 also can be the skewed slot of the non-perforation of offering with certain depth on lug 6.But because the thickness of lug 6 is less relatively, if form skewed slot, then the degree of depth of skewed slot can be littler, thereby be unfavorable for that slider 7 endwisely slips therein, the therefore preferred in the present invention inclined hole 61 that connects that uses.The outer end of inclined hole 61 can be opened wide, also can be closed.In this embodiment, the outer end closure of inclined hole 61.
In addition, described inclined hole 61 can be straight slotted hole, also can be arc or spiral slotted hole, and this can select as required.
As shown in Figure 7, 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, slider 7 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 replacement, 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 inclined hole 61, endwisely slip the described slider 7 preferred circle rollers that use for the ease of slider 7.
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 8 shows that a kind of spring band, it can be used as this preloading spring 5 and uses.As shown in Figure 8, 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 in inclined hole 61, axially slide by the above-mentioned slider 7 of control to the position of the voussoir 3 between inner ring 2 and the outer ring 1.When slider 7 axially slides in inclined hole 61,, inclined hole 61 rotates because, therefore can driving retainer 4 with respect to the axis tilt several angle.At this moment, because first working surface 31 of voussoir 3 is kept by the arc groove 11 of outer ring 1, so voussoir 3 will turn an angle around this first working surface 31, make second working surface 32 of voussoir 3 leave the working surface of inner ring 2, thereby make tri-state overrun clutch be in two-way separated state.If slider 7 is reverse slide in inclined hole 61, then voussoir 3 will reset again, and the working surface of contact inner ring 2 becomes traditional mono-directional overrun clutch.That is to say, break away from the working surface of inner ring 2 by 3 rotations of control voussoir fully, can promptly realize the third working state (two-way separated state) of free wheel device so that Internal and external cycle can freely rotate in positive and negative two-way realization.
At first embodiment tri-state overrun clutch of the present invention is illustrated above.With reference to the accompanying drawings other embodiment is described, but it should be noted that many aspects of above-mentioned first embodiment can be applicable to other embodiment, except as otherwise noted.Therefore, in other embodiment's of back description, will the repetitive description thereof will be omitted.
Second embodiment
Figure 2 shows that tri-state overrun clutch according to second embodiment of the invention.Compare with above-mentioned first embodiment, difference is: arc groove 21 is set on the working surface of inner ring 2, first working surface 31 of voussoir 3 remains in this arc groove 21 equally, rotate around its first working surface 31 thereby can stir voussoir 3 by retainer 4, its working method is identical with above-mentioned first embodiment.
In addition, in this second embodiment, preloading spring 5 can use the helical spring of a contraction simply, helical spring 5 is passed the through hole of offering in the voussoir 3, and first working surface 31 of voussoir 3 is firmly held in the arc groove 21, and can be by design to lead to the hole site on the voussoir 3, preloading spring 5 can make voussoir 3 that a kind of trend of rotating towards the wedging direction is arranged.
The 3rd embodiment
Figure 3 shows that tri-state overrun clutch according to third embodiment of the invention.Compare with above-mentioned first embodiment, difference is: described retainer 4 comprises outer retainer 41 and interior retainer 42 for two retainer structures.By this pair of retainer structure, can improve the bearing capacity of tri-state overrun clutch of the present invention and prolong its working life.
Wherein in described on the retainer 42 protruding vertically a plurality of lugs 6 identical with first embodiment.When interior retainer 42 relatively rotated, outer retainer 41 can be followed voussoir 3 and be done corresponding the rotation, but can not have influence on the rotation of voussoir 3.
The 4th embodiment
Figure 4 shows that tri-state overrun clutch according to fourth embodiment of the invention.Compare with above-mentioned the 3rd embodiment, difference is: arc groove 21 is set on the working surface of inner ring 2, first working surface 31 of voussoir 3 remains in this arc groove 21 equally, rotate around its first working surface 31 thereby can stir voussoir 3 by outer retainer 41, its working method is identical with above-mentioned the 3rd embodiment.
In addition, as the second above-mentioned embodiment, in this 4th embodiment, preloading spring 5 can use the helical spring of a contraction equally simply, helical spring 5 is passed the through hole of offering in the voussoir 3, and first working surface 31 of voussoir 3 is firmly held in the arc groove 21, and can be by the design to lead to the hole site on the voussoir 3, the trend that spring 5 can make voussoir 3 have a kind of super wedging direction to rotate.
The 5th embodiment
Figure 5 shows that tri-state overrun clutch according to fifth embodiment of the invention.Compare with above-mentioned the 3rd embodiment, difference is: arc groove 11 is not set on the working surface of outer ring 1, but, realize relatively rotating between outer retainer 41 and the interior retainer 42, thereby realize the rotation of voussoir 3 by outer retainer 41 is fixed on the outer ring 1.
Particularly, described outer retainer 41 can be fixed on the outer ring 1 for example bolt connection, riveted joint, clamping or the like by any known means in related domain.As shown in Figure 5, as an example, projection 410 is set on the retainer 41 outside, corresponding groove 110 is set on the working surface of outer ring 1 simultaneously, insert or remain in the groove 110 described protruding 410, outer retainer 41 can be fixed on the outer ring 1.Retainer 42 is provided with above-mentioned lug 6 in described, and is same as the previously described embodiments.Therefore, retainer 42 relatively rotates with respect to outer retainer 41 in lug 6 drives by stirring, and just can realize that voussoir 3 rotates between Internal and external cycle, thereby realize the separated state of tri-state overrun clutch.
In order to prevent that the rotation of voussoir 3 is caused obstruction, do not need to be provided with above-mentioned arc groove 11 or 21 in this embodiment.
The 6th embodiment
Figure 6 shows that tri-state overrun clutch according to sixth embodiment of the invention.Compare with above-mentioned the 5th embodiment, difference is: retainer 42 in described is fixed on the inner ring 2, on the retainer 41 lug 6 is set outside, thereby rotate with respect to interior retainer 42 by stirring outer retainer 41, can realize the rotation of voussoir 3.Preloading spring 5 can use the helical spring of a contraction equally simply, helical spring 5 is passed the through hole of offering in the voussoir 3, and first working surface 31 of voussoir 3 is firmly held on the working surface of inner ring 2, and can be by design to lead to the hole site on the voussoir 3, the trend that spring 5 can make voussoir 3 have a kind of super wedging direction to rotate.
At specific embodiment tri-state overrun clutch of the present invention is described in detail above, but the present invention is not limited to these specific embodiments.By reading specification of the present invention, those skilled in the art can expect the present invention is done some changes or improvement easily, and for example at voussoir, preloading spring, retainer etc., but these changes or improvement all will belong within protection scope of the present invention.
Claims (8)
1, a kind of tri-state overrun clutch, this tri-state overrun clutch comprises outer ring (1), and inner ring (2) is positioned at a plurality of voussoirs (3) between outer ring (1) and the inner ring (2), be positioned at the retainer (4) that keeps described a plurality of voussoirs (3) between outer ring (1) and the inner ring (2), it is characterized in that:
First working surface (31) of described a plurality of voussoir (3) forever contacts a working surface among the working surface of the working surface of described outer ring (1) and described inner ring (2), and can make second working surface (32) of described a plurality of voussoir (3) contact or leave another working surface among the working surface of the working surface of described outer ring (1) and described inner ring (2) by the rotation of described retainer (4).
2, tri-state overrun clutch according to claim 1, wherein:
Have a plurality of arc grooves (11) on the described working surface, each arc groove (11) matches with described first working surface (31) of a corresponding voussoir (3), and described first working surface (31) is remained in this arc groove (11);
Described retainer (4) has axially outwardly directed a plurality of lugs (6), has the inclined hole (61) with respect to axioversion on each lug (6), and have vertically slidably slider (7) in described inclined hole (61).
3, tri-state overrun clutch according to claim 2, 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, according to claim 2 or 3 described tri-state overrun clutch, wherein:
Described retainer (4) is the two retainer structures that comprise outer retainer (41) and interior retainer (42), and described outer retainer (41) or interior retainer (42) have described a plurality of lug (6).
5, tri-state overrun clutch according to claim 1, wherein:
Described retainer (4) is the two retainer structures that comprise outer retainer (41) and interior retainer (42), retainer (41 or 42) in its China and foreign countries' retainer (41) and the interior retainer (42) is fixed on described outer ring (1) or the inner ring (2), another retainer (42 or 41) can rotate with respect to a described retainer (41 or 42), rotates to drive described a plurality of voussoir (3).
6, tri-state overrun clutch according to claim 5, wherein:
Described another retainer (42 or 41) has axially outwardly directed a plurality of lugs (6), has the inclined hole (61) with respect to axioversion on each lug (6), and have vertically slidably slider (7) in described inclined hole (61).
7, according to claim 2 or 6 described tri-state overrun clutch, wherein said slider (7) is the circle roller.
8, according to claim 2 or 6 described tri-state overrun clutch, an end of wherein said inclined hole (61) has the reaming (62) that width increases.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710111536A CN100595448C (en) | 2007-06-19 | 2007-06-19 | 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 |
|---|---|---|---|
| CN200710111536A CN100595448C (en) | 2007-06-19 | 2007-06-19 | Tri-state overrunning clutch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101328937A CN101328937A (en) | 2008-12-24 |
| CN100595448C true CN100595448C (en) | 2010-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710111536A Active CN100595448C (en) | 2007-06-19 | 2007-06-19 | Tri-state overrunning clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100595448C (en) |
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| CN107091285B (en) * | 2017-06-28 | 2023-03-21 | 广东工业大学 | Overrunning clutch |
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| CN109667850B (en) * | 2018-12-29 | 2021-06-22 | 潍柴动力股份有限公司 | One-way clutch for hydraulic torque converter and hydraulic torque converter |
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2007
- 2007-06-19 CN CN200710111536A patent/CN100595448C/en active Active
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