Rotary mop with wiping head convenient to replace

Abstract

The rotary mop comprises the mop head, a differential control device is arranged in the middle of the mop head, the mop head comprises a cover plate and a bottom plate, the bottom plate is fixedly connected to the lower portion of the cover plate, the wiping head is connected to the lower side of the bottom plate, a clamping piece is movably arranged on the lower side of the bottom plate, and the clamping piece is fixedly connected to the bottom plate. The wiping head is fixed on the bottom plate through the clamping piece, the driving assembly drives the clamping piece to retract or expand, when the clamping piece retracts, the wiping head is separated from the bottom plate, and when the clamping piece expands, the wiping head is fixed on the bottom plate by the clamping piece. The movable clamping piece is arranged on the mop head of the rotary mop, the wiping head can be replaced very conveniently through the clamping piece, operation is easy and convenient, and the structure is simple and practical.

Description

Technical Field

[0001] The invention relates to the technical field of daily cleaning tools, in particular to a rotary mop with a conveniently replaceable mop head. Background Art

[0002] In daily life, rotary mops are widely used because of their flexible rotation, convenient cleaning and dehydration. The mop head of the rotary mop includes a cover, and a reducer is provided in the middle of the cover. The reducer is connected to the rotary drive assembly in the mop rod. The mop head is rotated, cleaned and dehydrated by moving the rod up and down on the mop rod. A cotton thread head for wiping and cleaning the floor is provided on the lower side of the cover. The cotton thread head is a plurality of wool or noodle bundles fixedly mounted on a hard circular wire drum. The lower side of the cover is open, and a clamping edge extending toward the center of the cover is provided circumferentially on the edge of the opening. The cotton thread head is fixed to the cover by clamping the outer edge of the wire drum into the clamping edge. When the mop head rotates, the cotton thread head is driven to rotate with it. However, the cotton thread needs to be replaced after being used for a period of time, and the installation method of the above-mentioned wire reel and cover is very strong, and it takes a lot of force to remove the wire reel, such as holding the cotton thread with your hand and pulling it down forcefully, which requires direct contact with the dirty wipes with your hands, seriously affecting the user experience; or stepping on the cotton thread with your feet, holding the mop rod and lifting the mop head upward, but it is easy to trip yourself, or damage the rotating drive assembly in the mop rod, or even tear or break the cover directly with excessive force, and there is also the problem of scratching your hands or feet. At the same time, when installing the cotton thread to be replaced, gradually press the edge of the wire reel into the card edge of the cover with your hands, which is very cumbersome and laborious, or after placing the cotton thread on the ground, step on the cover with your feet and forcefully squeeze the wire reel into the card edge, which is very easy to crush the cover. Summary of the invention

[0003] The purpose of the present invention is to provide a rotary mop with a convenient mop head replacement. The mop head of the rotary mop is provided with a movable clamping piece, through which the mop head can be very conveniently replaced. The operation is simple and convenient, and the structure is simple and practical.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A rotary mop with convenient mop head replacement comprises a mop head, wherein a differential control device is arranged in the middle of the mop head, wherein the mop head comprises a cover plate and a bottom plate, wherein the bottom plate is fixedly connected to the lower part of the cover plate, the mop head is connected to the lower side of the bottom plate, a clamping piece is movably arranged on the lower side of the bottom plate, the mop head is fixed to the bottom plate through the clamping piece, and a driving component drives the clamping piece to contract or open. When the clamping piece contracts, the mop head is separated from the bottom plate, and when the clamping piece opens, the mop head is fixed to the bottom plate by the clamping piece.

[0006] Preferably, the wiping head comprises a wire drum, a plurality of mounting holes are circumferentially arranged on the wire drum, and cleaning bristles are fixedly connected in the mounting holes.

[0007] Preferably, the driving assembly includes a transmission part and a toggle part, the toggle part is fixedly connected to the upper side of the transmission part, the transmission part is arranged between the base plate and the cover plate, and an opening is provided on the cover plate, the toggle part passes through the cover plate from the opening, the clamping part is arranged on the lower side of the transmission part, a through hole is provided on the base plate, and the clamping part passes through the base plate from the through hole.

[0008] Preferably, the clamping member includes at least two clamping plates, the upper ends of the clamping plates are fixed to the lower side of the transmission part, and the lower ends of the clamping plates are provided with a clamping tongue protruding outward, the wire drum is in a circular shape, and an inwardly protruding clamping edge is provided on the inner circumference of the wire drum, and the clamping edge is fixed on the upper side of the clamping tongue and contacts with the upper surface of the clamping tongue.

[0009] Preferably, the transmission part comprises two transmission plates arranged opposite to each other, with a gap therebetween and connected by a spring, a shifting part is provided on the upper side of each transmission plate, and the clamping member is provided at intervals on the lower side of each transmission plate.

[0010] Preferably, the transmission plate is a semi-annular plate and surrounds the differential control device, the shifting portion is arranged in the middle of the transmission plate, and the clamping members are symmetrically arranged on both sides of the shifting portion.

[0011] Preferably, the shifting portion is a shifting piece protruding from the upper side of the transmission plate, the opening is a through hole whose length matches the width of the shifting piece, and the side of the opening close to the outer edge of the cover plate is semicircular.

[0012] Preferably, grooves are provided at both ends of the transmission plate, positioning columns are provided in the grooves, and both ends of the spring are sleeved on the positioning columns.

[0013] Preferably, the outer ring edge of the wire drum extends upward to form a first supporting edge, and a plurality of first ridges are circumferentially arranged on the outer side of the first supporting edge. The outer edge of the cover plate extends downward to form a sleeve edge, and a plurality of second ridges are arranged on the inner side of the sleeve edge. The sleeve edge is sleeved on the outer side of the first supporting edge, and the first ridge is sandwiched between two adjacent second ridges.

[0014] Preferably, the inner ring edge of the wire drum extends upward to form a second supporting edge, and the clamping edge is arranged on the upper side of the second supporting edge.

[0015] Preferably, a limiting edge extending upward is provided on the upper side of the clamping edge.

[0016] Preferably, the bottom plate is annular, and the differential control device is arranged in the middle of the bottom plate. A connecting seat is provided on the upper part of the differential control device, and the connecting seat passes through the cover plate and is rotatably connected to the mop rod.

[0017] Preferably, an upper cover is sleeved on the connecting seat, the lower side of the upper cover abuts against the upper side of the cover plate, and the housing of the differential control device abuts against the lower side of the bottom plate.

[0018] In the above technical solution, the mop head of the rotary mop includes a cover plate and a bottom plate, the bottom plate is fixedly connected to the lower part of the cover plate, a clamping piece is movably provided on the lower side of the bottom plate, and the wiping head is fixed to the lower side of the bottom plate through the clamping piece. When the wiping head needs to be replaced, the driving component drives the clamping piece to contract, and the used wiping head will be detached from the bottom plate and fall off, and there is no need to touch the dirty wiping head with both hands, and the disassembly is convenient and labor-saving. After taking the wiping head to be replaced and placing it in the corresponding position on the bottom plate, the driving component drives the clamping piece to move outward and open, thereby fixing the wiping head on the bottom plate. The entire replacement process is simple and quick, and there is no need to touch the dirty wiping head with hands, which saves time and effort.

[0019] The driving assembly includes a transmission part and a toggle part. The transmission part includes two transmission plates arranged opposite to each other. A gap is set between the two transmission plates and the two transmission plates are connected by a spring. A toggle part is set on the upper side of each transmission plate, and a clamping part is set on the lower side of the transmission plate. The toggle part is pinched by hand to make it move toward each other. At this time, the two transmission plates approach each other and squeeze the spring to store elastic potential energy. The clamping part moves with the transmission plates and approaches each other. The distance between the tongues is shortened, so that the tongues form a contraction trend. After that, the toggle part is loosened, and the spring recovers its deformation to release elastic potential energy, driving the transmission plates to move away from each other. The clamping part follows the transmission plates to move away from each other, and the distance between the tongues becomes longer, thereby forming an opening trend. The toggle part is set in the middle of the transmission plate, which is convenient for pinching and squeezing the toggle part by hand. The clamping member includes at least two clamping plates, and a clamping tongue protruding outward is provided at the lower end of the clamping plate. The wire drum is annular, and a clamping edge extending and protruding toward the center is provided on the inner edge of the wire drum in the circumferential direction. When the wiping head is fixed on the lower side of the bottom plate, the clamping tongue is clamped on the lower surface of the clamping edge to fix the wiping head to the lower side of the bottom plate. When the wiping head is replaced, the clamping tongue shrinks inward and detaches from the lower surface of the clamping edge, so that the lower side of the clamping edge lacks support, so that the wiping head falls off from the lower side of the bottom plate. The overall structure is simple, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the mop head of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the mop head of the present invention at a second angle;

[0023] Figure 4 It is a schematic diagram of the structure of the mop head of the present invention in a disassembled state;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the wire drum of the present invention;

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the driving assembly of the present invention;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the transmission plate of the present invention;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure of the cover plate of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the bottom plate of the present invention;

[0029] Fig.10 is a top view of the mop head (without cover plate) of the present invention;

[0030] Fig.11 A bottom view of the mop head of the present invention;

[0031] Fig.12 is a cross-sectional view of a mop head of the present invention;

[0032] Fig.13 It is a cross-sectional view of the mop head of the present invention at a second angle.

[0033] In the figure, 1 is a mop head; 11 is a mop rod; 12 is an axle pin; 2 is a differential control device; 21 is a connecting seat; 22 is a hinge hole; 23 is a shell; 24 is an upper cover; 3 is a cover plate; 31 is an opening; 32 is a screw hole; 33 is a sleeve edge; 34 is a second convex ridge; 35 is a connecting hole; 4 is a bottom plate; 41 is a through hole; 42 is a bolt column; 5 is a wire drum; 51 is a clamping edge; 52 is a mounting hole; 53 is a first supporting edge; 54 is a first convex ridge; 55 is a second supporting edge; 57 is a gap edge; 58 is a limiting edge; 59 is a reinforcing rib; 6 is a clamping member; 61 is a clamping plate; 62 is a clamping tongue; 7 is a transmission part; 71 is a transmission plate; 72 is a spring; 73 is a groove; 74 is a positioning column; 75 is a long hole; 10 is a toggle part. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings:

[0035] like Figures 1 to 13As shown, the rotary mop with convenient replacement of the wiping head includes a mop head 1, which is rotatably connected to the mop rod 11, a differential control device 2 is provided in the middle of the mop head 1, and the mop head 1 includes a cover plate 3 and a bottom plate 4, the bottom plate 4 is fixedly connected to the lower part of the cover plate 3, the wiping head is connected to the lower side of the bottom plate 4, a clamping member 6 is movably provided on the lower side of the bottom plate 4, the wiping head is fixed to the bottom plate 4 by the clamping member 6, and the driving assembly drives the clamping member 6 to contract or open, when the clamping member 6 contracts, the wiping head 5 is separated from the bottom plate 4, and when the clamping member 6 is opened, the wiping head is fixed to the bottom plate 4 by the clamping member 6. When the wiping head needs to be replaced, the driving assembly drives the clamping member 6 to retract, and the used wiping head will detach from the bottom plate 4 and fall off. After the wiping head to be replaced is placed at the corresponding position on the bottom plate 4, the driving assembly drives the clamping member 6 to move outward and open, thereby fixing the wiping head on the bottom plate 4. The entire replacement process is simple and quick, and there is no need to touch the dirty wiping head with hands, which saves time and effort.

[0036] In a preferred embodiment, the cleaning head includes a wire drum 5 , on which a plurality of mounting holes 52 are circumferentially arranged, and cleaning bristles are fixedly connected in the mounting holes 52 .

[0037] In a preferred embodiment, the driving assembly includes a transmission part 7 and a toggle part 10, the toggle part 10 is fixedly connected to the upper side of the transmission part 7, the transmission part 7 is arranged between the bottom plate 4 and the cover plate 3, and an opening 31 is provided on the cover plate 3, the toggle part 10 passes through the cover plate 3 from the opening 31, the clamping member 6 is arranged on the lower side of the transmission part 7, a through hole 41 is provided on the bottom plate 4, and the clamping member 6 passes through the bottom plate 4 from the through hole 41. During use, by toggling or pressing the toggle part 10 with both hands, the transmission part 7 transmits power to the clamping member 6 and drives the clamping member 6 to make a contraction or expansion movement.

[0038] In a preferred embodiment, the clamping member 6 includes at least two clamping plates 61, which are arranged opposite to each other. The upper end of the clamping plate 61 is fixed to the lower side of the transmission part 7, and the lower end of the clamping plate 61 is provided with a clamping tongue 62 protruding outward. The wire drum 5 is annular, and a clamping edge 51 extending and protruding toward the center is provided on the inner edge of the wire drum 5 in the circumferential direction. When the wiping head is fixed to the lower side of the bottom plate 4, the clamping tongue 62 is clamped on the lower surface of the clamping edge 51, that is, the clamping edge 51 is fixed on the upper side of the clamping tongue 62 and contacts with the upper surface of the clamping tongue 62, so that the clamping edge 51 is clamped between the bottom plate 4 and the clamping tongue 62, thereby fixing the wiping head to the lower side of the bottom plate 4. When replacing the wiping head, the clamping tongue 62 shrinks inward to disengage from the lower surface of the clamping edge 51, so that the lower side of the clamping edge 51 lacks support, so that the wiping head falls off from the lower side of the bottom plate 4.

[0039] In a preferred embodiment, the transmission part 7 includes two transmission plates 71 arranged opposite to each other, with a gap between the two transmission plates 71 and connected by a spring 72, and a toggle part 10 is arranged on the upper side of each transmission plate 71, and the toggle part 10 is a paddle protruding from the upper side of the transmission plate 71, and the paddle is symmetrically arranged on the upper side of the cover plate 3; a clamping member 6 is arranged at intervals on the lower side of each transmission plate 71, and clamping members 6 are symmetrically arranged on both sides of the toggle part 10. When in use, the toggle part 10 is pinched by hand to move toward each other, at this time, the two transmission plates 71 approach each other and squeeze the spring 72 to store elastic potential energy, the clamping member 6 on the transmission plate 71 follows the transmission plate 71 to approach each other, and the distance between the tongues 62 is shortened, thereby forming a contraction trend. Afterwards, the toggle part 10 is loosened, the spring 72 recovers the deformation and releases the elastic potential energy, driving the transmission plates 71 to move away from each other, the clamping member 6 on the transmission plate 71 follows the transmission plate 71 to move away from each other, and the distance between the tongues 62 becomes longer, thereby forming an opening effect, and the toggle part 10 is reset at the same time. Furthermore, the opening 31 is a rectangular hole whose length matches the width of the paddle, so that the width of the opening 31 forms the stroke length of the paddle, and the side of the opening 31 close to the outer edge of the cover plate 3 is semicircular, so that when the spring 72 recovers its deformation and pushes the paddle to reset, the paddle is squeezed toward the semicircular part, so that the elastic potential energy has a larger release space, and at the same time, the clamping member 6 opens to a greater extent and fixes the wire drum 5 more stably. In addition, during the rotation of the mop head, the paddle and the transmission plate 71 have a tendency to be thrown outwards under the action of centrifugal force. At this time, the paddle will be clamped in the semicircular part, which has a stabilizing effect on the paddle and prevents the centrifugal force from affecting the driving component.

[0040] In a preferred embodiment, the transmission plate 71 is a semi-circular plate and surrounds the differential control device 2. Grooves 73 are provided at both ends of the transmission plate 71. Positioning posts 74 are provided in the grooves 73. Both ends of the spring 72 are sleeved on the positioning posts 74 to prevent the spring 72 from being compressed and bent. The toggle portion 10 is provided in the middle of the transmission plate 71 and the two toggle portions 10 are relatively provided on both sides of the cover plate 3. It is convenient to pinch and squeeze the toggle portion by hand. Furthermore, the clamping member 6 on each transmission plate 71 is provided on both sides of the toggle portion 10, so that the driving force received by the clamping member is more stable and uniform, and the wire drum 5 forms a four-point positioning, further ensuring that the wire drum 5 is fixed stably and reliably. Furthermore, the through hole 41 is a parallelogram, and the inclination angle of the through hole 41 is consistent with the rotation direction of the mop head. During the rotation of the mop head, the blocking effect of the edge of the through hole 41 on the clamping plate 61 is weakened, thereby improving the firmness of the clamping member 6.

[0041] In a preferred embodiment, the bottom plate 4 is screwed and fixed on the cover plate 3. The upper surface of the bottom plate 4 is provided with a bolt column 42, and the lower surface of the cover plate 3 is provided with a corresponding screw hole 32. The bolt passes through the bolt column 42 and is fixed in the screw hole 32, thereby fixing the bottom plate 4 on the cover plate 3. Further, a matching long hole 75 is provided on the transmission plate 71, through which the bolt column 42 and / or the screw hole 32 pass, and the length direction of the long hole 75 is consistent with the movement direction of the transmission plate 71. At this time, the bolt column 42 and / or the screw hole 32 or the bolt forms a limit for the transmission plate 71, preventing the transmission plate 71 from rotating or twisting left and right, so that the transmission plate 71 only moves along the driving direction of the toggle part 10, thereby ensuring the movement consistency of the clamping member 6. Furthermore, long holes 75 are provided on both sides of the transmission plate 71.

[0042] In a preferred embodiment, the outer ring edge of the wire drum 5 extends upward to form a first supporting edge 53, and a plurality of first ridges 54 are circumferentially provided on the outer side of the first supporting edge 53. The outer edge of the cover plate 3 extends downward to form a sleeve edge 33, and a plurality of second ridges 34 are provided on the inner side of the sleeve edge 33. The sleeve edge 33 is sleeved on the outer side of the first supporting edge 53, and the first ridge 54 is clamped between two adjacent second ridges 34, thereby preventing the mopping head from rotating left and right relative to the bottom plate 4. Furthermore, the bottom surface of the wire drum 5 protrudes circumferentially from the first supporting edge 53 to form a gap edge 57, and the gap edge 57 blocks the gap between the cover plate 3 and the first supporting edge 53 formed by the first ridge 54 and the second ridge 34, so that the outer diameter of the bottom surface of the wire drum 5 is matched with the inner diameter of the cover plate 3, thereby preventing dirt and debris from entering the interior of the rotating mop head and affecting the use effect of the differential control device 2. Furthermore, the inner edge of the wire drum 5 extends upward to form a second support edge 55, and a plurality of reinforcing ribs 59 are provided on the side of the second support edge 55 close to the first support edge 53; the clamping edge 51 is arranged on the upper side of the second support edge 55, and a limit edge 58 extending upward is provided on the upper side of the clamping edge 51. When the wire drum is fixed on the lower side of the bottom plate, the limit edge 58 abuts against the lower surface of the bottom plate 4 to compensate for the matching gap between the wire drum and the bottom plate 4, thereby preventing the wiping head from shaking up and down. At the same time, the mounting hole 52 is arranged between the first support edge 53 and the second support edge 55, and the edge of the mounting hole 52 is serrated, and a fixing column is provided on the upper side of the edge of the mounting hole 52, so that the cleaning hair is more stably fixed in the mounting hole 52.

[0043] In a preferred embodiment, the bottom plate 4 is annular, and the differential control device 2 is arranged in the middle of the bottom plate 4, a connecting seat 21 is arranged on the upper part of the differential control device 2, a connecting hole 35 matching the connecting seat 21 is arranged in the middle of the cover plate 3, the connecting seat 21 passes through the connecting hole 35 and protrudes on the upper surface of the cover plate 3, an upper cover 24 is sleeved on the connecting seat 21, the lower side of the upper cover 24 abuts against the upper side of the cover plate 3, and the housing 23 of the differential control device 2 abuts against the lower side of the bottom plate 4, so that the differential control device 2 is installed and fixed on the mop head 1. A hinge hole 22 is arranged on the connecting seat 21 and the upper cover 24, and the mop rod 11 is rotatably connected to the connecting seat 21 through the hinge hole 22. The mop rod 11 includes an upper rod and a lower rod, and the mop head is driven to rotate by the relative up and down displacement of the upper rod and the lower rod. Furthermore, the shaft pins 12 of the two planetary gears of the differential control device are provided on the lower side of the cover plate 3 , which can stabilize the movement of the differential control device 2 and strengthen the connection relationship between the cover plate 3 and the differential control device 2 .

[0044] In the above technical solution, when in use, the mop head is driven to rotate by the relative up-and-down displacement of the upper rod and the lower rod. When it is necessary to replace the wiping head, the two toggle parts 10 are pinched by hand and brought close to each other, the transmission plate 71 follows the movement and the gap between the two transmission plates 71 is reduced and the spring 72 is compressed. At this time, the clamping members 6 on the two transmission plates 71 move close to each other and toward the center of the mop head, so that the latch tongue 62 retracts from the bottom of the latch edge 51, and the wire drum 5 is detached and falls from the lower side of the bottom plate 4, thereby realizing the disassembly of the wiping head; thereafter, the wiping head to be replaced is taken out, the first supporting edge 53 is inserted into the sleeve joint edge 33 and the limiting edge 58 contacts the lower surface of the bottom plate 4, and the toggle part 10 is released. At this time, the spring 72 releases the elastic potential energy to drive the two transmission plates 71 away from each other, thereby driving the clamping members 6 to move away from each other toward the outer side of the mop head, so that the latch tongue 62 extends from the bottom of the latch edge 51 and is supported on the lower side of the latch edge 51, and the wire drum 5 is fixed on the lower side of the bottom plate 4, so that the installation and replacement of the wiping head is realized, and the whole process is convenient and fast, and the operation is simple.

[0045] This embodiment is only an illustration of the concept and implementation of the present invention, and does not limit it. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A rotary mop with convenient mop head replacement, comprising a mop head, a differential speed control device is provided in the middle of the mop head, characterized in that: The mop head includes a cover plate and a bottom plate, the bottom plate is fixedly connected to the lower part of the cover plate, a wiping head is connected to the lower side of the bottom plate, a clamping piece is movably provided on the lower side of the bottom plate, the wiping head is fixed to the bottom plate by the clamping piece, and a driving component drives the clamping piece to contract or open. When the clamping piece contracts, the wiping head is detached from the bottom plate, and when the clamping piece opens, the wiping head is fixed to the bottom plate by the clamping piece.

2. The rotary mop with convenient mop head replacement as claimed in claim 1, characterized in that: The wiping head comprises a wire drum, on which a plurality of mounting holes are circumferentially arranged, and cleaning bristles are fixedly connected in the mounting holes.

3. The rotary mop with convenient mop head replacement as claimed in claim 2, characterized in that: The driving assembly includes a transmission part and a toggle part, the toggle part is fixedly connected to the upper side of the transmission part, the transmission part is arranged between the bottom plate and the cover plate, and an opening is provided on the cover plate, the toggle part passes through the cover plate from the opening, the clamping piece is arranged on the lower side of the transmission part, a through hole is provided on the bottom plate, and the clamping piece passes through the bottom plate from the through hole.

4. The rotary mop with convenient mop head replacement as claimed in claim 3, characterized in that: The clamping member includes at least two clamping plates, the upper ends of which are fixed to the lower side of the transmission part, and the lower ends of which are provided with clamping tongues protruding outwards. The wire drum is in a circular ring shape, and an inwardly protruding clamping edge is provided on the inner circumference of the wire drum. The clamping edge is fixed to the upper side of the clamping tongue and contacts with the upper surface of the clamping tongue.

5. The rotary mop with convenient mop head replacement as claimed in claim 3 or 4, characterized in that: The transmission part comprises two transmission plates arranged opposite to each other, with a gap therebetween and connected by a spring, a shifting part is arranged on the upper side of each transmission plate, and the clamping piece is arranged at intervals on the lower side of each transmission plate.

6. The rotary mop with convenient mop head replacement as claimed in claim 5, characterized in that: The transmission plate is a semi-annular plate and surrounds the differential control device. The shifting portion is arranged in the middle of the transmission plate, and the clamping members are symmetrically arranged on both sides of the shifting portion.

7. The rotary mop with convenient mop head replacement as claimed in claim 6, characterized in that: The shifting part is a shifting piece protruding from the upper side of the transmission plate, the opening is a through hole whose length matches the width of the shifting piece, and the side of the opening close to the outer edge of the cover plate is semicircular.

8. The rotary mop with convenient mop head replacement as claimed in claim 6 or 7, characterized in that: The two ends of the transmission plate are provided with grooves, positioning columns are provided in the grooves, and the two ends of the spring are sleeved on the positioning columns.

9. The rotary mop with convenient mop head replacement as claimed in claim 4, characterized in that: The outer ring edge of the wire drum extends upward to form a first supporting edge, and a plurality of first ridges are circumferentially arranged on the outer side of the first supporting edge. The outer edge of the cover plate extends downward to form a sleeve edge, and a plurality of second ridges are arranged on the inner side of the sleeve edge. The sleeve edge is sleeved on the outer side of the first supporting edge, and the first ridge is sandwiched between two adjacent second ridges.

10. The rotary mop with convenient mop head replacement as claimed in claim 4 or 9, characterized in that: The inner ring edge of the wire drum extends upward to form a second supporting edge, and the clamping edge is arranged on the upper side of the second supporting edge.

11. The rotary mop with convenient mop head replacement as claimed in claim 10, characterized in that: A limiting edge extending upward is provided on the upper side of the clamping edge.

12. The rotary mop with convenient mop head replacement as claimed in any one of claims 1 to 4, 6, 7 and 9, characterized in that: The bottom plate is in a circular ring shape, and the differential control device is arranged in the middle of the bottom plate. A connecting seat is arranged on the upper part of the differential control device, and the connecting seat passes through the cover plate and is rotatably connected with the mop rod.

13. The rotary mop with convenient mop head replacement as claimed in claim 12, characterized in that: An upper cover is sleeved on the connecting seat, the lower side of the upper cover abuts against the upper side of the cover plate, and the outer shell of the differential control device abuts against the lower side of the bottom plate.

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