according to fig1 - 6 , fig1 and fig1 , a cleaning tool in one exemplary embodiment includes a mop bucket 1 and a mop . the lower end of the mop rod is provided with a mop head 2 with a wiping object . the mop rod includes an inner rod 3 and an outer rod 4 . the inner rod 3 , whose lower end connects with the mop head 2 , and the outer rod are sleeved and joint with each other . the tool includes a drive mechanism , used to convert the telescoping motion of the mop rod to the rotation motion of the mop head , is configured between the inner rod and the outer rod . a rotatable drying basket 5 is accommodated in the mop bucket and during drying , the mop head 2 is put in the drying basket 5 and the drive mechanism drives the mop head and the drying basket to rotate unidirectionally . a rotatable washing head 6 is accommodated in the mop bucket . during washing , the mop head 2 is put on the washing head 6 and the drive mechanism drives the mop head to rotate unidirectionally . the drive mechanism is a variable speed drive mechanism . during drying , the mop rod is depressed and the variable speed drive mechanism drives the mop head to rotate at the first rotation speed . during washing , the mop rod is depressed at the same speed , the variable drive mechanism drives the mop head to rotate at the second rotation speed , wherein the first rotation speed is higher than the second rotation speed . in the embodiment , the variable speed drive mechanism comprises a drive mechanism and a control mechanism . the drive mechanism comprises a screw rod 7 fixed with the outer rod 4 , and a transmission part 8 fixed inside the inner rod , wherein the transmission part 8 is provided with a rotation part 9 in which screw threads 10 fit for the screw rod are set . a unidirectional transmission mechanism is mounted between the rotation part and the transmission part . in the embodiment , the control mechanism comprises : a clamping chassis 12 configured on the lower cover 11 of the mop head , a speed reduction device accommodated in the mop head and a washing head 6 accommodated in the washing head installation seat 13 which is provided with a clamping seat 14 fit for the clamping chassis ; wherein the speed reduction device is a planetary gear transmission whose sun gear 15 is connected with the mop rod and integrated with the clamping slots 16 in the mop head , and whose gear ring 17 is accommodated in the mop disk 2 - 1 of the mop head 2 , the lower cover 11 of the mop head and the mop head can rotate relative to each other . in the embodiment , clamping slots 16 capable of rotating relative to other components of the mop head are accommodated in the mop head , and two clamps 18 - 1 and 18 - 2 fit for the clamping slots are respectively configured on the drying basket and the washing head . a ratchet 19 is configured on the upper part of the clamping slots and another ratchet 21 fit for the ratchet 19 is configured on the unidirectional control sheet 20 sleeved on the upper part of the clamping slots . the lower cover of the mop head restricts the rotation of the unidirectional control sheet . when the rotation direction is the direction in which the two ratchets above are supported against each other , the wiping object on the mop head can be unfolded by means of the interaction between the two ratchets . the working process of the embodiment is as follows : when drying , the mop rod is depressed to drive the mop head to rotate and the clamping slots in the mop head drive the clamps in the drying basket to rotate , thus realizing centrifugal drying . when washing the mop , the mop rod is depressed , since a clamping chassis is configured on the lower cover of the mop head and a clamping seat fit for the clamping chassis is configured on the washing head installation seat , the lower cover of the mop head and the washing head installation seat can not rotate relative to each other when the clamping chassis is fixed by the clamping seat . at this time , the mop rod drives the sun gear of the planetary gear transmission , and the planetary gear drives the gear ring and further drives the mop disk of the mop head to rotate , thus realizing the speed reducing rotation of the mop head to decrease the resistance of the mop head during washing so as to realize labor - saving washing . since the mop head of the cleaning tool provided by the embodiment can get different rotation speeds under the drying conditions with a lower resistance and the washing conditions with a higher resistance to realize the high - speed rotational drying and low - speed rotational cleaning simultaneously , both the dehydration and cleaning of the mop can save labor . fig7 - 11 show embodiment 2 of the present invention . the drive mechanism in the embodiment is the same with that in embodiment 1 . the control mechanism of the embodiment comprises : a clamping chassis 22 configured on the mop head 2 , a washing head 6 and a speed reduction device accommodated in the washing head installation seat 13 on which a clamping seat 23 fit for the clamping chassis 22 is configured ; wherein the speed reduction device is a planetary gear transmission whose sun gear 24 is connected with the washing head , and whose gear ring 25 is accommodated in the clamping seat 23 . other components in the embodiment are the same with those in embodiment 1 , which can also realize the object of the present invention . the working process of the embodiment is as follows : when drying , the mop rod is depressed to drive the mop head to rotate and the clamping slots in the mop head drives the clamps in the dehydration basket to rotate , thus realizing centrifugal dehydration . when washing the mop , the mop rod is depressed ; the clamping chassis on the mop head locks the clamping seat on the washing head installation seat so that the mop disk of the mop head and the washing head installation seat can not rotate relative to each other . at this time , the mop rod drives the washing head which further drives the sun gear of the planetary gear transmission , the planetary gear drives the gear ring which further drives the rotatable clamping seat and the mop head to rotate , thus realizing the speed reducing rotation of the mop head to decrease the resistance of the mop head during washing so as to realize labor - saving washing . fig1 and 13 show embodiment 3 of the present invention . in the embodiment , the control mechanism comprises : a mop rod including three sections of rod parts , wherein a group of drive mechanisms 26 are configured between the upper rod and the middle rod , a first control switch 27 controls the relative rotation and positioning between the upper rod and the middle rod , another group of drive mechanisms 28 are configured between the middle rod and the lower rod , a second control switch 29 controls the relative rotation and positioning between the middle rod and the lower rod , and the screw rods 7 - 2 and 7 - 3 of the two groups of drive mechanisms have different screw pitch . the working process of the embodiment is as follows : when drying , either the first control switch or the second control switch is turned on to make the drive mechanism with shorter screw pitch in the two screw rods to work , at this time , the mop rod is depressed to enable the drive mechanism to output a higher rotation speed , thus realizing high - speed drying . when washing the mop , the other control switch is turned on to make the drive mechanism with longer screw pitch in the two screw rods to work , at this time , the mop rod is depressed to enable the drive mechanism to output a lower rotation speed , thus realizing low - speed rotational washing . the embodiment can also simultaneously accomplish the high - speed rotational drying and low - speed rotational washing , thus saving labor in depression operation of the mop rod under both working conditions . fig1 and 15 show a unidirectional transmission mechanism according to the present invention . in the embodiment , the unidirectional transmission mechanism comprises : a transmission gear 30 configured at the bottom of the rotation part 9 , and another transmission gear 31 configured at the bottom of the inner side of the transmission part 8 , wherein the two transmission gears are provided with a mating surface and a sliding surface fit for each other , and the rotation part can move up and down relative to the transmission part ; when the rotation part rotates in one direction to let the mating surfaces of the two transmission gear support against each other , a unidirectional transmission is formed ; when the rotation part rotates in another direction to let the sliding surfaces of the two transmission gear support against each other , the rotation part moves relative to the transmission part and forms an idle transmission . it can realize unidirectional transmission function . fig1 and 17 show another unidirectional transmission mechanism according to the present invention . in the present invention , the unidirectional transmission mechanism comprises : a unidirectional bearing 32 configured between the transmission part 8 and the rotation part 9 , wherein , when the rotation direction of the rotation part is the locking direction of the unidirectional bearing , a unidirectional transmission is formed between the rotation part and the transmission part ; when the rotation direction of the rotation part is the free rotation direction of the unidirectional bearing , an idle transmission is formed between the rotation part and the transmission part . it can also realize unidirectional transmission function . in the present invention , the dehydration basket and washing head are configured in the same mop bucket . of course , the drying basket and washing head in the present invention can be configured in different mop buckets respectively . both of the two structures above can realize the object of the present invention . the embodiments above are only the individual cases for application of the present invention . any such change and combination of the embodiments according to the spirit of the present invention should be covered in the scope of protection of the present invention .
a cleaning tool includes a mop which includes at a lower end a mop head with a wiping object . the mop includes a mop rod formed of an inner rod and an outer rod and a drive mechanism is used to convert the telescoping motion of the mop rod to rotation motion of the mop head . the drive mechanism is a variable speed drive mechanism . as a result , the mop head of the cleaning tool achieves different rotation speeds under dry working condition with a lower resistance compared to washing conditions with a higher resistance . during washing , the mop head is washed rotationally at a lower speed , and the washing operation is conducted through depressing the mop rod .