Rotary mop with wiping head convenient to replace

Abstract

The utility model discloses a rotary mop with a wiping head convenient to replace, which comprises a 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, and a clamping piece is movably arranged on the lower side of 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] This utility model relates to the technical field of daily cleaning tools, and in particular to a rotating mop with a convenient replaceable mop head. Background Technology

[0002] Spin mops are widely used in daily life due to their flexible rotation, ease of cleaning, and spin-drying. The mop head includes a cover, with a speed reducer located in the center of the cover. The speed reducer is connected to the rotation drive assembly in the mop handle. The up-and-down movement of the mop handle enables the mop head to rotate for cleaning and spin-drying. On the underside of the cover is a cotton thread for wiping the floor. This cotton thread consists of several bundles of yarn or noodles fixed to a rigid, circular spool. The underside of the cover is open, with a retaining edge extending circumferentially towards the center of the cover. The cotton thread is secured to the cover by inserting the outer edge of the spool into this retaining edge. When the mop head rotates, the cotton thread rotates with it. However, the cotton thread needs to be replaced after a period of use. The aforementioned installation method of the spool and cover is very sturdy, requiring a great deal of force to remove the spool. For example, you can forcefully pull down by holding the cotton thread, which requires direct contact with the dirty cleaning material, severely impacting the user experience. Alternatively, you can step on the cotton thread and forcefully lift the mop head by gripping the handle, but this easily leads to tripping, damage to the rotating drive component inside the mop handle, or even tearing or breaking the cover due to excessive force, and also poses a risk of hand or foot injuries. Furthermore, installing the cotton thread to be replaced involves gradually pressing the edge of the spool into the cover's retaining edge by hand, which is tedious and laborious. Another method is to place the cotton thread on the ground and step on the cover to forcefully squeeze the spool into the retaining edge, which easily breaks the cover. Utility Model Content

[0003] The purpose of this utility model is to provide a rotary mop with a convenient mop head replacement feature. The mop head of the rotary mop is equipped with a movable locking component, which allows for easy replacement of the mop head. The operation is simple and convenient, and the structure is simple and practical.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A rotary mop with a convenient replaceable mop head includes a mop head and a differential speed control device in the middle of the mop head. The mop head includes a cover plate and a base plate. The base plate is fixedly connected to the lower part of the cover plate. A mop head is connected to the lower side of the base plate. A clamping member is movably disposed on the lower side of the base plate. The mop head is fixed to the base plate by the clamping member. A drive assembly drives the clamping member to retract or open. When the clamping member retracts, the mop head disengages from the base plate. When the clamping member opens, the mop head is fixed to the base plate by the clamping member.

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

[0007] Preferably, the drive assembly includes a transmission part and a actuating part. The actuating part is fixedly connected to the upper side of the transmission part. The transmission part is disposed between a base plate and a cover plate, and an opening is provided on the cover plate. The actuating part passes through the opening and exits the cover plate. The clamping member is disposed on the lower side of the transmission part, and a through hole is provided on the base plate. The clamping member passes through the through hole and exits the base plate.

[0008] Preferably, the clamping component includes at least two clamping plates, the upper end of which is fixed to the lower side of the transmission part, and the lower end of which is provided with an outwardly protruding clamping tongue. The coil is annular, and an inwardly protruding clamping edge is provided on the inner circumference of the coil. The clamping edge is fixed to the upper side of the clamping tongue and contacts the upper surface of the clamping tongue.

[0009] Preferably, the transmission part includes two oppositely arranged transmission plates, with a gap between the two transmission plates and connected by a spring. Each transmission plate has a prying part on its upper side and a clamping member at a distance on the lower side of each transmission plate.

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

[0011] Preferably, the actuating part is a paddle protruding from the upper side of the transmission plate, the opening is a through hole with a length matching the width of the paddle, and the side of the opening near the outer edge of the cover plate is semi-circular.

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

[0013] Preferably, the outer edge of the coil extends upward to form a first support edge, and a plurality of first protruding ridges are provided circumferentially on the outer side of the first support edge. The outer edge of the cover plate extends downward to form a sleeve edge, and a plurality of second protruding ridges are provided on the inner side of the sleeve edge. The sleeve edge is sleeved on the outer side of the first support edge, and the first protruding ridges are sandwiched between two adjacent second protruding ridges.

[0014] Preferably, the inner edge of the coil extends upward to form a second support edge, and the retaining edge is disposed on the upper side of the second support edge.

[0015] Preferably, an upwardly extending limiting edge is provided on the upper side of the card edge.

[0016] Preferably, the base plate is annular, and the differential control device is located in the middle of the base plate. A connecting seat is provided on the upper part of the differential control device, and the connecting seat extends out of the cover plate and is rotatably connected to the mop handle.

[0017] Preferably, an upper cover is fitted onto 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 base plate.

[0018] In the above technical solution, the mop head of the rotary mop includes a cover plate and a base plate. The base plate is fixedly connected to the lower part of the cover plate, and a locking member is movably arranged on the lower side of the base plate. The mop head is fixed to the lower side of the base plate by the locking member. When the mop head needs to be replaced, the drive assembly drives the locking member to retract. At this time, the used mop head will detach from the base plate and fall off, eliminating the need to touch the dirty mop head with both hands. Moreover, disassembly is convenient and labor-saving. After taking the mop head to be replaced and placing it in the corresponding position on the base plate, the drive assembly drives the locking member to move outward and open, thereby fixing the mop head to the base plate. The entire replacement process is simple and quick, eliminating the need to touch the dirty mop head with hands, saving time and effort.

[0019] The drive assembly includes a transmission section and an actuating section. The transmission section comprises two opposing transmission plates separated by a gap and connected by a spring. Each transmission plate has an actuating part on its upper side and a locking member on its lower side. When the actuating part is pinched, it moves towards the other side, causing the two transmission plates to move closer together and compress the spring, storing elastic potential energy. The locking member follows the movement of the transmission plates and moves closer together, shortening the distance between the latches and causing them to contract. When the actuating part is released, the spring returns to its original shape, releasing elastic potential energy and driving the transmission plates away from each other. The locking member also moves away from each other, increasing the distance between the latches and causing them to open. The actuating part is located in the middle of the transmission plates for easy pinching and squeezing. The clamping mechanism includes at least two clamping plates. Each clamping plate has an outwardly protruding latch at its lower end. The coil is annular, and its inner edge has a protruding rim extending towards the center. When the cleaning head is fixed to the underside of the base plate, the latch engages with the lower surface of the rim, thus securing the cleaning head to the underside of the base plate. When replacing the cleaning head, the latch retracts inward, disengaging from the lower surface of the rim. This lack of support on the lower side of the rim allows the cleaning head to fall off the underside of the base plate. The overall structure is simple, convenient, and practical. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the mop head of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the mop head of this utility model from a second angle;

[0023] Figure 4 This is a schematic diagram of the disassembled structure of the mop head of this utility model.

[0024] Figure 5 This is a three-dimensional structural diagram of the spool of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram of the drive component of this utility model;

[0026] Figure 7 This is a three-dimensional structural diagram of the transmission plate of this utility model;

[0027] Figure 8 This is a three-dimensional structural diagram of the cover plate of this utility model;

[0028] Figure 9 This is a three-dimensional structural diagram of the base plate of this utility model;

[0029] Figure 10 This is a top view of the mop head (without cover) of this utility model;

[0030] Figure 11 This is a bottom view of the mop head of this utility model;

[0031] Figure 12 This is a cross-sectional view of the mop head of this utility model;

[0032] Figure 13 This is a cross-sectional view of the mop head of this utility model from a second angle.

[0033] In the diagram, 1 is the mop head; 11 is the mop handle; 12 is the shaft pin; 2 is the differential control device; 21 is the connecting seat; 22 is the hinge hole; 23 is the outer shell; 24 is the top cover; 3 is the cover plate; 31 is the opening; 32 is the screw hole; 33 is the sleeve edge; 34 is the second protruding ridge; 35 is the connecting hole; 4 is the base plate; 41 is the through hole; 42 is the bolt post; 5 is the coil; 51 is the retaining edge; 52 is the mounting hole; 53 is the first support edge; 54 is the first protruding ridge; 55 is the second support edge; 57 is the gap edge; 58 is the limiting edge; 59 is the reinforcing rib; 6 is the clamping part; 61 is the retaining plate; 62 is the retaining tongue; 7 is the transmission part; 71 is the transmission plate; 72 is the spring; 73 is the groove; 74 is the positioning post; 75 is the elongated hole; 10 is the actuating part. Detailed Implementation

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

[0035] like Figures 1 to 13As shown, a rotary mop that facilitates head replacement includes a mop head 1, which is rotatably connected to a mop handle 11. A differential control device 2 is provided in the middle of the mop head 1. The mop head 1 includes a cover plate 3 and a base plate 4. The base plate 4 is fixedly connected to the lower part of the cover plate 3. A mop head is connected to the lower side of the base plate 4. A clamping member 6 is movably arranged on the lower side of the base plate 4. The mop head is fixed to the base plate 4 by the clamping member 6. A drive assembly drives the clamping member 6 to retract or open. When the clamping member 6 retracts, the mop head 5 disengages from the base plate 4. When the clamping member 6 opens, the mop head is fixed to the base plate 4 by the clamping member 6. When the wiping head needs to be replaced, the drive assembly drives the clamping part 6 to retract. At this time, the used wiping head will detach from the base plate 4 and fall off. After taking the wiping head to be replaced and placing it in the corresponding position on the base plate 4, the drive assembly drives the clamping part 6 to move outward and open, thereby fixing the wiping head on the base plate 4. The whole replacement process is simple and quick, and there is no need to touch the dirty wiping head with your hands, saving time and effort.

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

[0037] In a preferred embodiment, the drive assembly includes a transmission part 7 and a actuating part 10. The actuating part 10 is fixedly connected to the upper side of the transmission part 7. The transmission part 7 is disposed between the base plate 4 and the cover plate 3, and the cover plate 3 has an opening 31. The actuating part 10 passes through the opening 31 and exits the cover plate 3. A clamping member 6 is disposed on the lower side of the transmission part 7, and the base plate 4 has a through hole 41. The clamping member 6 passes through the through hole 41 and exits the base plate 4. During use, by actuating or pressing the actuating part 10 with both hands, the transmission part 7 transmits power to the clamping member 6, causing the clamping member 6 to retract or open.

[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 an outwardly protruding clamping tongue 62. The coil 5 is annular, and the inner edge of the coil 5 is provided with a clamping edge 51 extending towards the center. When the wiping head is fixed to the lower side of the base plate 4, the clamping tongue 62 is engaged with the lower surface of the clamping edge 51, that is, the clamping edge 51 is fixed to the upper side of the clamping tongue 62 and contacts the upper surface of the clamping tongue 62. In this way, the clamping edge 51 is engaged between the base plate 4 and the clamping tongue 62, thereby fixing the wiping head to the lower side of the base plate 4. When the wiping head is replaced, the clamping tongue 62 retracts inward to disengage from the lower surface of the clamping edge 51. In this way, the lower side of the clamping edge 51 lacks support, and the wiping head falls off from the lower side of the base plate 4.

[0039] In a preferred embodiment, the transmission unit 7 includes two opposing transmission plates 71, spaced apart and connected by a spring 72. Each transmission plate 71 has a toggle part 10 on its upper side, which is a paddle protruding from the upper side of the transmission plate 71. The paddles are symmetrically arranged on the upper side of the cover plate 3. A locking member 6 is spaced apart on the lower side of each transmission plate 71, and locking members 6 are symmetrically arranged on both sides of the toggle part 10. In use, the toggle part 10 is pinched by hand to move it towards each other. At this time, the two transmission plates 71 move closer together and compress the spring 72, storing elastic potential energy. The locking members 6 on the transmission plates 71 move closer together, and the distance between the locking tongues 62 shortens, thus creating a contraction trend. Then, the toggle part 10 is released, the spring 72 recovers its deformation and releases elastic potential energy, driving the transmission plates 71 away from each other. The locking members 6 on the transmission plates 71 move away from each other, and the distance between the locking tongues 62 lengthens, thus creating an opening effect. Simultaneously, the toggle part 10 resets. Furthermore, the opening 31 is a rectangular hole with a length matching the width of the paddle, so the width of the opening 31 forms the stroke length of the paddle. The side of the opening 31 closest to the outer edge of the cover plate 3 is semi-circular. This allows the paddle to be compressed towards the semi-circular area when the spring 72 returns to its original shape, providing a larger release space for the elastic potential energy. Simultaneously, the clamping member 6 opens more fully, securing the coil 5 more stably. Additionally, during the rotation of the mop head, the paddle and transmission plate 71 tend to swing outwards due to centrifugal force. At this time, the paddle is clamped at the semi-circular area, providing a stabilizing effect and preventing the centrifugal force from affecting the drive assembly.

[0040] In a preferred embodiment, the transmission plate 71 is a semi-annular plate surrounding the differential control device 2. Grooves 73 are provided at both ends of the transmission plate 71, and positioning posts 74 are provided within the grooves 73. The two ends of the spring 72 are sleeved on the positioning posts 74 to prevent the spring 72 from being compressed and bent. A lever part 10 is located in the middle of the transmission plate 71, and two lever parts 10 are positioned opposite each other on both sides of the cover plate 3. This facilitates squeezing and pressing the lever part by hand. Furthermore, clamping members 6 are provided on both sides of the lever part 10 on each transmission plate 71, making the driving force received by the clamping members more stable and uniform. Simultaneously, the coil 5 forms a four-point positioning, further ensuring the stable and reliable fixation of the coil 5. 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 obstruction effect of the edge of the through hole 41 on the clamping plate 61 is weakened, improving the firmness of the clamping member 6.

[0041] In a preferred embodiment, the base plate 4 is screwed onto the cover plate 3. The upper surface of the base plate 4 is provided with bolt posts 42, and the lower surface of the cover plate 3 is provided with corresponding threaded holes 32. Bolts pass through the bolt posts 42 and are fixed within the threaded holes 32, thereby fixing the base plate 4 onto the cover plate 3. Further, the transmission plate 71 is provided with matching elongated holes 75 through which the bolt posts 42 and / or threaded holes 32 pass. The length direction of the elongated holes 75 is consistent with the movement direction of the transmission plate 71. At this time, the bolt posts 42 and / or threaded holes 32 or bolts limit the movement of the transmission plate 71, preventing the transmission plate 71 from rotating left or right or twisting, ensuring that the transmission plate 71 moves only along the driving direction of the actuating part 10, thus guaranteeing the consistency of the movement of the clamping member 6. Even further, elongated holes 75 are provided on both sides of the transmission plate 71.

[0042] In a preferred embodiment, the outer edge of the coil 5 extends upward to form a first support edge 53. A plurality of first protruding ribs 54 are provided circumferentially on the outer side of the first support edge 53. The outer edge of the cover plate 3 extends downward to form a socket edge 33. A plurality of second protruding ribs 34 are provided on the inner side of the socket edge 33. The socket edge 33 is fitted onto the outer side of the first support edge 53, and the first protruding ribs 54 are sandwiched between two adjacent second protruding ribs 34. This prevents the mop head from rotating left and right relative to the base plate 4. Furthermore, the bottom surface of the coil 5 protrudes circumferentially from the first support edge 53 to form a gap edge 57. The gap edge 57 seals the gap between the cover plate 3 and the first support edge 53 formed by the first protruding ribs 54 and the second protruding ribs 34, so that the outer diameter of the bottom surface of the coil 5 matches the inner diameter of the cover plate 3, preventing dirt and debris from entering the interior of the rotating mop head and affecting the performance of the differential control device 2. Furthermore, the inner edge of the coil 5 extends upward to form a second support edge 55, and several reinforcing ribs 59 are provided on the side of the second support edge 55 near the first support edge 53; a retaining edge 51 is provided on the upper side of the second support edge 55, and an upwardly extending limiting edge 58 is provided on the upper side of the retaining edge 51. When the coil is fixed to the lower side of the base plate, the limiting edge 58 abuts against the lower surface of the base plate 4, which has the effect of compensating for the gap between the coil and the base plate 4, preventing the cleaning head from shaking up and down. At the same time, the mounting hole 52 is provided between the first support edge 53 and the second support edge 55. The edge of the mounting hole 52 is serrated, and a fixing post is provided on the upper side of the edge of the mounting hole 52, so that the cleaning bristles are more stably fixed in the mounting 52.

[0043] In a preferred embodiment, the base plate 4 is annular, and the differential control device 2 is disposed in the middle of the base plate 4. A connecting seat 21 is provided on the upper part of the differential control device 2, and a connecting hole 35 that mates with the connecting seat 21 is provided in the middle of the cover plate 3. The connecting seat 21 protrudes from the upper surface of the cover plate 3 after passing through the connecting hole 35. An upper cover 24 is fitted on the connecting seat 21, and the lower side of the upper cover 24 abuts against the upper side of the cover plate 3. The outer shell 23 of the differential control device 2 abuts against the lower side of the base plate 4, thereby fixing the differential control device 2 to the mop head 1. A hinge hole 22 is provided on the connecting seat 21 and the upper cover 24. 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, a shaft pin 12 for the planetary gears of the differential control device 2 is provided on the lower side of the cover plate 3, which can stabilize the movement of the differential control device 2 and enhance the connection between the cover plate 3 and the differential control device 2.

[0044] In the above technical solution, during use, the mop head is driven to rotate by the relative vertical displacement of the upper and lower rods. When the mop head needs to be replaced, pinch the two actuating parts 10 and bring them close together. The transmission plate 71 moves accordingly, and the gap between the two transmission plates 71 decreases, compressing the spring 72. At this time, the clamping parts 6 on the two transmission plates 71 move closer to each other and towards the center of the mop head. In this way, the latch 62 retracts from the bottom of the clamping edge 51, and the coil 5 falls off from the bottom side of the base plate 4, realizing the removal of the mop head. Then, take the mop head to be replaced, insert the first support edge 53 into the sleeve edge 33, and after the limiting edge 58 contacts the lower surface of the base plate 4, release the actuating part 10. At this time, the spring 72 releases elastic potential energy to drive the two transmission plates 71 away from each other, thereby driving the clamping parts 6 away from each other and moving towards the outside of the mop head. In this way, the latch 62 extends from the bottom of the clamping edge 51 and supports the bottom side of the clamping edge 51, and the coil 5 is fixed to the bottom side of the base plate 4, realizing the installation and replacement of the mop head. The whole process is convenient, quick, and easy to operate.

[0045] This embodiment is merely an illustration of the concept and implementation of this utility model, and is not intended to limit it. Under the concept of this utility model, the technical solution without substantial changes is still within the protection scope.

Claims

1. A rotary mop with a conveniently replaceable mop head, comprising a mop head, wherein 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 base plate. The base plate is fixedly connected to the lower part of the cover plate. A mopping head is connected to the lower side of the base plate. A clamping member is movably arranged on the lower side of the base plate. The mopping head is fixed to the base plate by the clamping member. A drive assembly drives the clamping member to retract or open. When the clamping member retracts, the mopping head disengages from the base plate. When the clamping member opens, the mopping head is fixed to the base plate by the clamping member.

2. The rotary mop with a conveniently replaceable mop head as described in claim 1, characterized in that, The cleaning head includes a spool with several mounting holes arranged circumferentially on the spool, and cleaning bristles are fixedly connected in the mounting holes.

3. The rotary mop with a conveniently replaceable mop head as described in claim 2, characterized in that, The drive assembly includes a transmission part and a actuating part. The actuating part is fixedly connected to the upper side of the transmission part. The transmission part is disposed between a base plate and a cover plate, and an opening is provided on the cover plate. The actuating part passes through the opening and exits the cover plate. The clamping member is disposed on the lower side of the transmission part, and a through hole is provided on the base plate. The clamping member passes through the through hole and exits the base plate.

4. The rotary mop with a conveniently replaceable mop head as described in claim 3, characterized in that, The clamping component includes at least two clamping plates. The upper end of the clamping plate is fixed to the lower side of the transmission part, and the lower end of the clamping plate is provided with an outwardly protruding clamping tongue. The coil is annular, and an inwardly protruding clamping edge is provided on the inner circumference of the coil. The clamping edge is fixed to the upper side of the clamping tongue and contacts the upper surface of the clamping tongue.

5. The rotary mop with a conveniently replaceable mop head as described in claim 3 or 4, characterized in that, The transmission unit includes two opposing transmission plates with a gap between them and connected by a spring. Each transmission plate has a prying part on its upper side and a clamping member at a distance on the lower side of each transmission plate.

6. The rotary mop with a conveniently replaceable mop head as described in claim 5, characterized in that, The transmission plate is a semi-circular plate that surrounds the differential control device. The actuating part is located in the middle of the transmission plate, and the clamping parts are symmetrically arranged on both sides of the actuating part.

7. The rotary mop with a conveniently replaceable mop head as described in claim 6, characterized in that, The actuating part is a paddle that protrudes from the upper side of the transmission plate, the opening is a through hole with a length matching the width of the paddle, and the side of the opening near the outer edge of the cover plate is semi-circular.

8. The rotary mop with a conveniently replaceable mop head as described in claim 6 or 7, characterized in that, The transmission plate has grooves at both ends, and positioning posts are provided in the grooves. The two ends of the spring are sleeved on the positioning posts.

9. The rotary mop with a conveniently replaceable mop head as described in claim 4, characterized in that, The outer edge of the coil extends upward to form a first support edge. Several first protruding ridges are provided circumferentially on the outer side of the first support edge. The outer edge of the cover plate extends downward to form a socket edge. Several second protruding ridges are provided on the inner side of the socket edge. The socket edge is fitted on the outer side of the first support edge, and the first protruding ridges are sandwiched between two adjacent second protruding ridges.

10. The rotary mop with a conveniently replaceable mop head as described in claim 4 or 9, characterized in that, The inner edge of the coil extends upward to form a second support edge, and the retaining edge is disposed on the upper side of the second support edge.

11. The rotary mop with a conveniently replaceable mop head as described in claim 10, characterized in that, An upwardly extending limiting edge is provided on the upper side of the card edge.

12. The rotary mop with a conveniently replaceable mop head as described in any one of claims 1-4, 6, 7, and 9, characterized in that, The base plate is circular, and the differential control device is located in the middle of the base plate. A connecting seat is provided on the upper part of the differential control device, and the connecting seat extends out of the cover plate and is rotatably connected to the mop handle.

13. The rotary mop with a conveniently replaceable mop head as described in claim 12, characterized in that, An upper cover is fitted onto the connecting seat, with the lower side of the upper cover abutting against the upper side of the cover plate, and the housing of the differential control device abutting against the lower side of the base plate.

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