Two-way output one-way clutch mechanism
Technical field
The invention belongs to the mechanical transmissioning technology field, specifically, relate in particular to and a kind ofly can realize two-way output one-way clutch mechanism.
Background technique
Existing overrunning clutch mechanism, one of them important components are the spline cam one-way element of wounded in the battle keyway, because one-way element is merely able to the direction rotation by, locking on another direction.When power output (interior ring or outer shroud) the rotating ratio power source (outer shroud or interior ring) of clutch is fast, clutch is in the state of freeing, based on this, thereby realize the overdrive clutch function of overrunning clutch mechanism, because of present one-way element is mainly the spline cam type overpass clutch, the patent No. is ZL03233130.4, name is called " change gear device with cam type overpass characteristic " and the patent No. is ZL201010539253.8, name is called the clutch of " single-direction and dual-direction clutch mechanism ", it comprises gear, heart portion at gear is equipped with the spline cam, this spline cam be evenly distributed in the smooth curved surface that multistage has the lifting characteristic, end face at cam is provided with Ka Tai, between spline cam and gear internal diameter, has retainer, roller is equipped with in dividing equally of retainer in the breach, and each roller and spline cam one section have the lifting characteristic smooth curved surface corresponding; Be equipped with between described retainer and the spline cam and can make retainer roller be pressed to the elastic mechanism of spline cam lift direction, and this elastic mechanism is a stage clip, this kind structure mainly has the following disadvantages: the first, having under the situation of one-way element, power can only unidirectionally be exported, and drives the unidirectional rotation of axle; The second, this kind structure processed complex especially to the processing of retainer, needs to process in the plane the mounting point of groove stage clip in the retainer, the installation step of spline cam etc., so difficulty of processing is big, the cost height is difficult to volume production.Three, the Ka Tai of the single-direction and dual-direction clutch mechanism in past is provided in a side of on the end face of cam, and cam be kink on axle, so this one-way element can only one-way only operation, unidirectional disengagement or two-way disengagement can not realize two-way working, unidirectional disengagement.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of novelty simple in structure, can reliably realizes the overdrive clutch function, and the two-way output one-way clutch mechanism of long service life.
Technological scheme of the present invention is as follows: the two-way output one-way clutch mechanism of design, its main points are: comprise gear, in this gear heart portion the spline cam is installed, described spline cam is solidly set on the transmission shaft with spline, between this spline cam and gear inwall, retainer is installed, on the excircle of described spline cam, evenly be provided with one group of cam curved surface and projection respectively, described cam curved surface is the smooth curved surface with lift characteristics, and each cam curved surface is that same rotation direction is distributed on the excircle of described spline cam, be respectively equipped with on the described retainer and corresponding roller installation gap of described cam curved surface and stage clip installation gap radially, in described roller installation gap, roller be installed all; In the radially stage clip installation gap of described retainer radially stage clip is installed, this radially stage clip one end be against on the projection sidewall of spline cam, the other end is against on the radially stage clip installation gap sidewall of retainer, this radially stage clip can make described retainer described roller be pushed to the lift direction of described cam curved surface; Be provided with Ka Tai on described gear one end face, be installed with spline housing sour jujube platform mechanism through spline on the described transmission shaft in this card platform outside, spline housing sour jujube platform and described gear card decometer in the described spline housing sour jujube platform mechanism connect.
The present invention adopts above structure, under the effect of stage clip radially, and described retainer and spline cam reverse rotation, thus make retainer push roller the lift direction of cam curved surface to, make the inwall of spline cam, roller and gear clamp state in aggregates.When gear transmission passes to the spline cam and the spline cam is turned clockwise, under the effect of its cam curved surface, roller is outwards pushed, make roller be close to the gear inwall and clamp the rotation of drive spline cam, the clockwise unidirectional rotary work of spline cam driven transmission shaft simultaneously.When transmission shaft rotational speed during greater than the gear rotational speed, the roller of gear inwall is by the low spot direction of spline cam band to cam curved surface, at this moment is between gear, roller, the spline cam three to separate to surmount sliding state.Function based on above structure, when the needs transmission shaft when counter clockwise direction is rotated, surmount the effect of sliding because of one-way element, at this moment, when gear transmission rotates to counter clockwise direction, can not be effectively with transmission of power to transmission shaft, when needs with gear transmission when counter clockwise direction is delivered on the transmission shaft, only need described spline housing sour jujube platform mechanism is moved to the gear direction, make that spline housing sour jujube platform and the described gear card decometer in the described spline housing sour jujube platform mechanism connects, can realize the bi-directional of power.
Preferred as one of described spline housing sour jujube platform mechanism structure: described spline housing sour jujube platform mechanism is by spline housing, spline housing sour jujube platform, axially stage clip and electromagnetic coil constitute, left end at described spline housing is provided with spline housing sour jujube platform, described spline housing through spline package on described transmission shaft, the described axial stage clip of suit on the described transmission shaft of this spline housing left end, described axial stage clip one end is against on the described spline housing left end, and the other end is against on the described gear-bearing or on the gear face.Described electromagnetic coil is enclosed within on the spline housing outward.Adopt above structure under the effect of axial stage clip, this axial stage clip promotes spline housing and moves right, and makes spline housing sour jujube platform separate with the Ka Tai of described gear face.When needs gear driven transmission shaft when counter clockwise direction is rotated, only need the energising of the electromagnetic coil in the said structure, thereby under the effect of electromagnetic force, spline housing is moved to the left, make spline housing sour jujube platform on the spline housing and the card decometer on the described gear connect, can realize the bi-directional of power.
One group of cam curved surface and two projections on the described spline cam are evenly distributed on the excircle of this spline cam, and described two projections are oppositely arranged, adopt above structure can make retainer and spline cam reverse rotation among the present invention more reliable, simultaneously, when the inwall of spline cam, roller and gear clamped state in aggregates, the power of its combination was balanced more and steady.
Hoop evenly is fixed with four described spline housing sour jujube platforms on the described spline housing left end end face, and hoop evenly is fixed with four described Ka Tai on the described gear right-hand member end face, so can realize the reliable clamping of gear and spline housing sour jujube platform mechanism.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1;
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment 1:
Two-way output one-way clutch mechanism as shown in Figure 1, comprise gear 1, described gear 1 right part is sleeved on the transmission shaft 6 through positioning bearing 15, in this gear 1 left part heart portion spline cam 9 is installed, described spline cam 9 through spline package on transmission shaft 6, between this spline cam 9 and gear 1 inwall, retainer 10 is installed, on the excircle of described spline cam 9, be evenly distributed with one group of cam curved surface 9a and two projections 12, and described two projections 12 are oppositely arranged, wherein said cam curved surface 9a is the smooth curved surface with lift characteristics, and each cam curved surface 9a is all along on the excircle that is distributed in described spline cam 9 clockwise, certainly, each cam curved surface 9a all along on the excircle that is distributed in described spline cam 9 counterclockwise also can, as long as each cam curved surface 9a is with rotation direction; Described retainer 10 is provided with and described cam curved surface 9a and projection 12 corresponding roller installation gap 10a and radially stage clip installation gap 14 respectively, in described roller installation gap 10a, roller 8 is installed all, on described gear 1 left end, be provided with catch 11, this catch 11 is spacing in described gear 1 with described spline cam 9 and retainer 10, described two projections 12 all stretch in the radially stage clip installation gap 14 corresponding with it, radially stage clip 13 is installed between described retainer 10 and spline cam 9, this radially stage clip 13 1 ends be against on the sidewall of projection 12 of described spline cam 9, the other end is against on the sidewall of radially stage clip installation gap 14 of described retainer 10, this radially stage clip 13 can make described retainer 10 described roller 8 be pushed to the lift direction of described cam curved surface 9a, hoop evenly is fixed with four described gear card platforms 2 on described gear 1 right-hand member end face, on the described transmission shaft 6 on these gear card platform 2 right sides, be installed with spline housing sour jujube platform mechanism through spline, described spline housing sour jujube platform mechanism is by spline housing 5, spline housing sour jujube platform 7, axially stage clip 3 and electromagnetic coil 4 constitute, hoop evenly is fixed with four described spline housing sour jujube platforms 7 on the left end end face of described spline housing 5, described spline housing 5 through spline package on described transmission shaft 6, the described axial stage clip 3 of suit on the described transmission shaft 6 of these spline housing 5 left parts, these axial stage clip 3 one ends are against on the described spline housing 5, the other end is against on the sidewall of the bearing of described gear 1 or gear 1, the described electromagnetic coil 4 of overcoat on the cylindrical of described spline housing 5; When described electromagnetic coil 4 is switched on, described spline housing sour jujube platform 7 and 2 clampings of described gear card platform, when described electromagnetic coil 4 cut off the power supply, described spline housing sour jujube platform 7 separated with described gear card platform 2.
The present invention is like this work: under the effect of stage clip 13 radially, described retainer 10 and spline cam 9 reverse rotation, thereby make retainer 10 push roller 8 the lift direction of cam curved surface 9a to, make the inwall of spline cam 9, roller 8 and gear 1 clamp state in aggregates.When gear 1 when clockwise direction rotates, under the effect of its cam curved surface 9a, roller 8 is outwards pushed, the inwall that makes roller 8 be close to gear 1 clamps, and spline cam 9 is rotated simultaneously to clockwise direction, thereby driving one-way element also rotates to clockwise direction, because of the spline cam 9 of this one-way element is solidly set on the transmission shaft 6 through spline, so spline cam 9 just drives transmission shaft 6 also to the clockwise direction rotary work, when transmission shaft 6 rotational speeies during greater than the rotational speed of gear 1, the roller 8 of gear 1 inwall is by the lift low spot of spline cam 9 bands to cam curved surface 9a, at this moment gear 1, roller 8, be between spline cam 9 threes to separate and surmount sliding state, when gear 1 when counter clockwise direction is rotated, the rotating power of gear 1 is equally with the lift low spot of roller 8 bands to cam curved surface 9a, make spline cam 9, the inwall of roller 8 and gear 1 forms and separates sliding state, at this moment gear 1 can not be effectively with transmission of power to transmission shaft 6, the power that needs gear 1 is when counter clockwise direction is delivered on the transmission shaft 6, only need described electromagnetic coil 4 energisings, spline housing sour jujube platform mechanism just moves to the direction of gear 1, make spline housing sour jujube platform 7 and 2 clampings of described gear card platform in the described spline housing sour jujube platform mechanism, can realize that gear 1 drives spline housing 5 to counterclockwise rotating, because of spline housing 5 is solidly set on the transmission shaft 6 through spline, so spline housing 5 also just drives transmission shaft 6 to the counter clockwise direction rotation work, simultaneously also can realize the clockwise direction rotation work, therefore realize the function of the two-way output one-way clutch of active force of the present invention.
The above only is preferred embodiment of the present invention; the move mode of spline housing sour jujube platform has multiple; be not unique with above move mode; the quantity of gear Ka Tai and spline housing sour jujube platform is not restriction with four also; can set number according to actual conditions; all any modifications of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.