CN202301556U

CN202301556U - One-way controllable clutch

Info

Publication number: CN202301556U
Application number: CN2011203402107U
Authority: CN
Inventors: 王建力
Original assignee: SHAANXI CHANGLING ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: SHAANXI CHANGLING ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2012-07-04
Anticipated expiration: 2021-09-09

Abstract

The utility model provides a one-way controllable clutch. The one-way controllable clutch comprises a casing 1, an output shaft 2, a one-way overrunning clutch 3, an input shaft 4 and a torsion spring 5, wherein the one-way overrunning clutch 3 and the input shaft 4 are accommodated by the outmost side of the casing 1; the input shaft 4 and the output shaft 2 are coaxially arranged; the torsion spring 5 is sleeved outside the end part of the output shaft 2; the one-way overrunning clutch 3 is arranged outside the torsion spring 5; outward hooks are respectively arranged at two ends of the torsion spring 5; one end of each outward hook is limited by a key groove in an inner hole of the one-way overrunning clutch 3; and the other end of each outward hook is limited by a groove in the end face of the input shaft 4. The one-way controllable clutch disclosed by the utility model is simple in structure; the input shaft rotates forward to lock the output shaft to synchronously rotate; and the input shaft rotates reversely to be separated from the output shaft or to control the rotating speed of a load shaft. The contradiction between the speed and the power during forward-backward rotation of a driving system motor is overcome; and quick free rotation of the load is achieved.

Description

Unidirectional controllable clutch

Technical field

The utility model belongs to the mechanical transmissioning technology field; Relate in the mechanical transmission connecting means of axle and axle between input and the output and technological; Be specifically related to a kind of unidirectional controllable clutch; Be to need outwards to throw in the towing object fast and want the control rate design,, realize the quick rotation of output shaft to solve the contradiction between transmission system input shaft positive and negative rotation speed per hour degree and the power to aircraft.

Background technique

Traditional clutch by structure be divided into electromagnetism, friction, ratchet, surmount and safety etc. type; Be divided into unidirectional or bi-directional type again by sense of rotation; The clutch of other types all is uncontrollable in the clutch degree except that frictional; Clutch on the automobile promptly is the typical application of frictional clutch, and it controls the clutch degree through adjustment rubbing surface pressure size; Also have a kind of torsional spring clutch now, the paper feed mechanism of printing use more, principle be direction of input shaft torsion spring is with the output shaft locking when rotating, output shaft and then rotates, and during the input shaft counter-rotation torsion spring is opened, the output shaft release is not then rotated;

The frictional clutch needs to adjust the clutch degree through the device of an adjustment interface pressure, and complex structure, torsional spring clutch then can not be controlled the clutch degree.

The model utility content

The purpose of the utility model is to overcome the deficiency of above prior art, has utilized the two characteristics of mono-directional overrun clutch and torsional spring clutch, proposes a kind of unidirectional controllable clutch simple in structure, may command clutch degree again; When being the input shaft forward rotation, its principle passes through torsion spring with the output shaft locking; The shaft coupling that surmounts the motion realization forward through encircling in the mono-directional overrun clutch rotates, when the input shaft backward rotation, because the mono-directional overrun clutch locking is motionless; And the input shaft counter-rotating makes the diameter of torsion spring become big; The output shaft release separates freely rotating of realization output shaft, and the frictional force through between whole output shaft of the counter-rotational adjustable angle of control input shaft and the torsion spring realizes control or locking to output speed.

Unidirectional controllable clutch is applicable to that forward is promoted by motor; Oppositely need the mechanical transmission and the equipment of control rate again,, need input shaft power slowly to sling during lifting like architectural high-altitude tower crane by the load quick decline of conducting oneself with dignity; The deadweight of load capable of using descends fast during decline; Because unidirectional controllable clutch only passes through input shaft backward rotation angle control rate this moment, input shaft does not rotate, and motor is energy-conservation in the time of therefore also can realizing object decline.

For realizing above-mentioned purpose, the unidirectional controllable clutch of the utility model comprises: housing 1, output shaft 2, mono-directional overrun clutch 3, input shaft 4, torsion spring 5.Wherein, input shaft 4 and output shaft 2 coaxial arrangement, the outside of output shaft 2 ends is with said torsion spring 5; The outside of torsion spring 5 is mono-directional overrun clutchs 3; With mono-directional overrun clutch 3 and input shaft 4 containings and mono-directional overrun clutch 3 is fixing, respectively there is an outside crotch at torsion spring 5 two ends to housing 1 at ragged edge, and an end is spacing by the keyway on unidirectional free wheel device 3 endoporus; The groove that the other end is transfused on axle 4 end faces is spacing, and input shaft 4 is connected with the motor input shaft.

The utility model and existing technology relatively have following advantage:

1) the utility model is because input shaft 4 is connected with output shaft 2 through a torsion spring 5, and torsion spring 5 tightens up locking output shaft 2 during input shaft 4 forward rotation, and output shaft 2 rotates in company with input shaft through the motion that surmounts of ring in the mono-directional overrun clutch 3.

2) during the utility model input shaft 4 backward rotation because the reverse locking of ring in the mono-directional overrun clutch 3; After the certain angle of input shaft 4 backward rotation; Torsion spring 5 opens gradually; Output shaft 2 releases and can rotating freely, the whole torsion spring 5 of adjustable angle through 4 counterrotatings of control input shaft and output shaft 2 are the size of frictional force between the two, realizes control or locking to output shaft 2 speed.

Description of drawings

Fig. 1 is the mechanical structure schematic representation of the unidirectional controllable clutch of the utility model.

Fig. 2 is the three-dimensional artificial structural representation of the unidirectional controllable clutch of the utility model.

Embodiment

Further specify the embodiment of the utility model below in conjunction with accompanying drawing.

As depicted in figs. 1 and 2, the unidirectional controllable clutch of the utility model comprises: housing 1, output shaft 2, mono-directional overrun clutch 3, input shaft 4, torsion spring 5.Wherein, input shaft 4 and output shaft 2 coaxial arrangement are torsion springs 5 in the outside of output shaft 2 ends; The outside of torsion spring 5 is mono-directional overrun clutchs 3; With mono-directional overrun clutch 3 and input shaft 4 containings and mono-directional overrun clutch 3 is fixing, respectively there is an outside crotch at torsion spring 5 two ends to housing 1 at ragged edge, and an end is spacing by the keyway on unidirectional free wheel device 3 endoporus; The groove that the other end is transfused on axle 4 end faces is spacing, and input shaft 4 is connected with the motor input shaft.

Because input shaft 4 is connected with output shaft 2 through a torsion spring 5, when input shaft 4 forward rotation, torsion spring 5 tightens up locking output shaft 2, and output shaft 2 rotates in company with input shaft through the motion that surmounts of ring in the mono-directional overrun clutch 3.

When input shaft 4 backward rotation; Because the reverse locking of ring in the mono-directional overrun clutch 3; After the certain angle of input shaft 4 backward rotation, torsion spring 5 opens gradually, and output shaft 2 releases also can rotate freely; Through the whole torsion spring 5 of the adjustable angle of control input shaft 4 counterrotatings and output shaft 2 size of frictional force between the two, realize control or locking to output shaft 2 speed.

Claims

1. unidirectional controllable clutch; Comprise housing (1), output shaft (2), input shaft (4), torsion spring (5); Said input shaft (4) and said output shaft (2) coaxial arrangement, the outside of said output shaft (2) end is with said torsion spring (5), it is characterized in that; Said unidirectional controllable clutch also comprises mono-directional overrun clutch (3); Said housing (1) contains said mono-directional overrun clutch (3) and said input shaft (4) at ragged edge, and the outside of said torsion spring (5) is said mono-directional overrun clutch (3), and respectively there is an outside crotch at the two ends of said torsion spring (5); One end is spacing by the keyway on said mono-directional overrun clutch (3) endoporus, and the other end is spacing by the groove on said input shaft (4) end face.