CN103994158B

CN103994158B - Bidirectional clutch

Info

Publication number: CN103994158B
Application number: CN201410252008.7A
Authority: CN
Inventors: 袁丁; 张以都; 吴琼; 莫帅
Original assignee: Beihang University
Current assignee: Beihang University
Priority date: 2014-06-09
Filing date: 2014-06-09
Publication date: 2017-01-11
Anticipated expiration: 2034-06-09
Also published as: CN103994158A

Abstract

A friction type mechanical bidirectional clutch comprises an input gear, an output gear, a rotary shaft, a shifting fork control disc, rolling columns and a damping device. An annular step with the outer diameter smaller than a root circle is arranged on one side of the output gear, a step hole is formed in one side of the input gear, at least two arc grooves which are evenly distributed in the peripheral direction and used for containing the rolling columns are formed in the step hole, the arc grooves are connected with the step hole through transition arcs, the shifting fork control disc is a disc with a central hole and the annular step, through grooves which correspond to the arc grooves and are used for containing the rolling columns are formed in the annular step, the rotary shaft is a three-section step shaft, the rolling columns are cylinders, and the damping device is matched with the shifting fork control disc. The clutch is simple in structure, the function that the input end can drive the output end in the forward and reverse rotating directions and the output end cannot drive the input end in the forward direction or the reverse direction can be achieved stably, the control mode is simple, and no additional manual or electric control input is needed.

Description

A kind of bidirectional clutch

Technical field

The present invention relates to a kind of friction-type machine two-way clutch device.

Background technology

Along with the raising of people's living standard, the demand of cabinet the most electronic to electric furniture gets more and more.In special feelings such as power failure, electric faults Under condition, it is desirable to electric furniture can be with manual operation.In order to improve the fluency of manual operation, need to arrange between electronic input stage and output stage one Plant bidirectional clutch.Common clutch common configuration is complicated, especially also has extra electronic or Non-follow control end in addition to input, output.

Summary of the invention

It is an object of the invention to provide one makes input can drive outfan, and outfan rotating both direction in rotating both direction All without driving the clutch being applied to the most electronic cabinet of electric furniture of input, this clutch configuration is simple, it is not necessary to extra manually or Person's Electronic control.

To achieve these goals, the technical solution used in the present invention is: a kind of friction-type bidirectional clutch device, including input gear, output gear Wheel, rotating shaft, fork controls dish, roller, damping unit.

Described output gear side has the circular step that external diameter is less than root circle, described input gear side to have stepped hole, described stepped hole has at least Two arc grooves for accommodating roller the most uniform, described arc groove is connected by transition camber line with stepped hole, and described fork controls dish is With centre bore and the disk of circular step, described circular step having the groove for accommodate roller corresponding with aforementioned arc groove, described rotating shaft is Three sections of Step Shafts, in the circular step on described output gear has the centre bore being arranged on fork controls dish in gap, described fork controls dish ring-type In step has the stepped hole being arranged on input gear in gap, described input gear, output gear, fork controls armor are around described axis of rotation, institute Stating roller is cylinder, and described damping unit coordinates with aforementioned fork controls dish.

Especially, the stepped hole of described input gear there are four arc grooves for accommodating roller the most uniform.

Especially, the circular step of described fork controls dish has four for the groove accommodating roller.

Especially, described damping unit is four fixing damping blocks having frictional fit with fork controls dish.

Especially, there is spring leaf inside the circular step of described fork controls dish.

Especially, there is no spring leaf inside the circular step of described fork controls dish.

The invention have the benefit that clutch configuration is simple, it is possible to stably realize input and can drive outfan in rotating both direction, And outfan rotating both direction is all without the function of drive input, and control mode is simple, does not has extra manual or Electronic control defeated Enter.

Accompanying drawing explanation

Fig. 1 is the explosive view of a kind of example of the present invention.

Fig. 2 is the front sectional view of example described in Fig. 1.

Fig. 3 is the front sectional view when side wedging of the example described in Fig. 1.

Fig. 4 is the explosive view of another example of the present invention.

Fig. 5 is the front sectional view of example described in Fig. 4.

Detailed description of the invention

The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as a limitation of the invention.

Fig. 1 to Fig. 3 illustrates a kind of example of the present invention, including including input gear 1, rotating shaft 2, fork controls dish 3, output gear 4, roller 5, damping unit 7, spring leaf 6.

There is stepped hole 104 described input gear 1 side, and described stepped hole 104 has four circles for accommodating roller 5 the most uniform Arc groove 101, described arc groove 101 is connected with stepped hole 104 by the transition camber line 102,103 of both sides；Described rotating shaft 2 is three sections of concentric steps Axle, input gear 1 is rotated around shaft part 201 by its central through hole, and output gear 4 is rotated around shaft part 202 by its central through hole；Described shift fork Control dish 3 is the circular step 301 of band centre bore and with the disk 303 in identical central hole, described circular step 301 has 4 for holding Receive the groove 302 of roller 5；The circular step 401 that described output gear 4 side has external diameter to be less than root circle；Between this circular step 401 can have In the centre bore of the insertion fork controls dish 3 of gap, circular step 301 can have in the insertion stepped hole 104 in gap, wherein the position of groove 302 Corresponding with arc groove 101；4 cylindrical rollers 5 are arranged in the space that groove 302 and arc groove 101 and circular step 401 are constituted； Circular step 301 is disposed with circular arc spring leaf 601,602, the layout of spring leaf 601,602 symmetry inside corresponding groove 302 position accordingly In groove 302 centrage both sides, spring leaf major part is fixed on inside circular step 301, and fraction exposes at groove 302, and spills part not Half to groove 302 width；4 damping units 7 the most uniform it are disposed with, outside damping unit 701 and machine outside disk 303 Frame (not shown) is fixed, and inside damping unit, 702 surfaces being held in disk 303 provide frictional damping.

The work process of examples detailed above is: under resting state, and whole clutch is in position as shown in Figure 2；When electric machine rotation drives input gear 1 rotates along a direction, and due to the frictional resistance of damping unit 7, fork controls dish 3 can not be followed input gear 1 at once and be rotated, input gear 1 Produce relative rotation with fork controls dish 3, as it is shown on figure 3, roller 5 detaches arc groove 101, on roller 5 circumference a little and transition camber line 103 Tangent, another point is tangent with groove 302 sidewall, and along with increasing in relative rotation, roller 5 extrusion spring sheet 601,602 deforms, and then inwardly Locking circular step 401, now the frictional resistance of damping unit 7 is no longer able to limit the rotation of fork controls dish 3, and drive is dialled by input gear 1 Fork control dish 3 and output gear 4 rotating in same direction, and then complete the motor control to outfan, in like manner, when motor drives input tooth in another direction During wheel 1 rotation, roller 5 inwardly locks circular step 401 in the way of symmetrical with afore-mentioned so that input gear 1 drives fork controls dish 3 Rotate with output gear 4；Motor completes after a divertical motion inputs again to one angle of rotation of counterturn so that input gear 1 can produce One minor rotation contrary with former rotation direction, the point of contact that now roller 5 is tangent with transition camber line 103 moves to arc groove 101 direction, in conjunction with The effect of spring leaf 601,602, roller 5 produces a radially outer movement, disengages the locking to circular step 401 so that clutch returns To resting state as shown in Figure 2；Under static state, output gear 4 can not contact other parts around independent rotation of rotating shaft 2, thus Make outfan independently moving, the drive system of motor can be departed from.

Fig. 4 to Fig. 5 illustrates the another kind of example of the present invention, including including input gear 1, rotating shaft 2, fork controls dish 3, output gear 4, rolling Post 5, damping unit 7, its with prior example structure on be different only in that there is no spring leaf 6.

The work process of this example is similar with previous examples: under resting state, and whole clutch is in position as shown in Figure 5；Work as electric machine rotation Driving input gear 1 to rotate along a direction, due to the frictional resistance of damping unit 7, fork controls dish 3 can not be followed input gear 1 at once and be rotated, Input gear 1 and fork controls dish 3 produce relative rotation, and roller 5 detaches arc groove 101, on roller 5 circumference a little and transition camber line 103 Tangent, another point is tangent with groove 302 sidewall, and along with increasing in relative rotation, circular step 401 inwardly locked by roller 5, now damping unit The frictional resistance of 7 can not limit the rotation of fork controls dish 3, and input gear 1 will drive fork controls dish 3 and output gear 4 rotating in same direction, And then complete the motor control to outfan, in like manner, when motor drives input gear 1 to rotate in another direction, roller 5 with afore-mentioned pair The mode claimed inwardly locks circular step 401 so that input gear 1 drives fork controls dish 3 and output gear 4 to rotate；Motor completes one and turns Again to one angle of rotation of counterturn after motion input so that input gear 1 can produce a minor rotation contrary with former rotation direction, The point of contact that now roller 5 is tangent with transition camber line 103 is moved to arc groove 101 direction, and the power on roller 5 that the most inwardly acts on releases, Roller 5 disengages the locking to circular step 401 so that clutch returns to resting state as shown in Figure 2；Under static state, output gear 4 Can rotate around rotating shaft 2 is independent, the roller 5 lacking spring leaf constraint is in free state, may do with output gear 4 and return around self The rotation of rotating shaft, but will not reverse locking input gear 1 so that the independently moving of outfan is the drive system that can depart from motor.

Clutch configuration involved in the present invention is simple, it is possible to stably realizes input and can drive outfan in rotating both direction, and exports Rectify the reversion both direction function all without drive input, and control mode is simple, there is no extra manual or Electronic control input.

Above example only elaborates ultimate principle and the characteristic of the present invention, and the present invention is not limited by examples detailed above, without departing from spirit and scope of the invention On the premise of, the present invention also has various change and change, the such as shape of transition camber line 102,103, roller and the corresponding quantity accommodating space thereof, The shape of groove 302, these changes of the form of damping 7 and change both fall within scope of the claimed invention.Claimed scope by Appending claims and equivalent thereof define.

Claims

null1. a friction-type machine two-way clutch device，Including input gear、Output gear、Rotating shaft、Fork controls dish、Roller、Damping unit，It is characterized in that the circular step that described output gear side has external diameter to be less than root circle，There is stepped hole described input gear side，The arc groove for accommodating roller that at least two is the most uniform is had on described stepped hole，Described arc groove is connected by transition camber line with stepped hole，Described fork controls dish is the disk of band centre bore and circular step，The groove for accommodate roller corresponding with aforementioned arc groove is had on described circular step，Described rotating shaft is three sections of Step Shafts，In circular step on described output gear has the centre bore being arranged on fork controls dish in gap，In the circular step of described fork controls dish has the stepped hole being arranged on input gear in gap，Described input gear、Output gear、Fork controls armor is around described axis of rotation，Described roller is cylinder，Described damping unit coordinates with aforementioned fork controls dish.
2. bidirectional clutch as claimed in claim 1, it is characterised in that: there are four arc grooves for accommodating roller the most uniform on the stepped hole of described input gear.
3. bidirectional clutch as claimed in claim 1, it is characterised in that: have four on the circular step of described fork controls dish for the groove accommodating roller.
4. bidirectional clutch as claimed in claim 1, it is characterised in that: described damping unit is four fixing damping blocks having frictional fit with fork controls dish.
5. bidirectional clutch as claimed in claim 1, it is characterised in that: there is spring leaf inside the circular step of described fork controls dish.
6. bidirectional clutch as claimed in claim 1, it is characterised in that: there is no spring leaf inside the circular step of described fork controls dish.