A chuck-type mop assembly without a rotating shaft base

Abstract

The utility model discloses a chuck formula mop assembly without rotating axle seat, including mop stick and mop bucket, the mop stick includes fixed lid, chuck and drive arrangement, be equipped with the first cavity in the fixed lid, the bottom of first cavity is open end, the chuck is with the rotatable mode of fixed lid centre axis and is arranged in the first cavity, drive arrangement sets up on the fixed lid and is connected with chuck transmission, drive arrangement is configured as: in response to the user's down -press operation, the power output end of drive arrangement drives the chuck rotation about the centre axis relative to the fixed lid. The utility model discloses chuck formula mop assembly without rotating axle seat, through the design without rotating axle seat, completely omitted the complex center rotation support structure in traditional mop bucket, not only greatly simplified the mechanical structure of mop bucket itself, reduced the mould complexity and production manufacturing cost, also avoided the drawback that the rotating axle seat is easy to wear, needs the periodical maintenance.

Description

Technical Field

[0001] This utility model relates to the field of cleaning tools technology, specifically to a chuck-type mop assembly without a rotating shaft seat. Background Technology

[0002] Floor cleaning is a basic requirement for environmental maintenance, and mops, as a core cleaning tool, have become widely used. Currently, mainstream mops adopt a rotary wringing design, which drives the rotating rod on the mop handle to rotate the chuck at high speed, using centrifugal force to achieve efficient dehydration of the chuck, solving the problems of traditional mops being laborious to wring out and leaving a lot of water residue.

[0003] However, existing spin-dry mops have significant drawbacks: the mop bucket is usually directly and fixedly connected to or linked with the rotating rod of the mop handle. To achieve stable rotation and spin-drying of the chuck, the mop bucket must have a specially designed spin-drying seat adapted to the chuck structure. This spin-drying seat needs to have positioning, limiting, and transmission adaptation functions to ensure that the chuck does not shift or shake during high-speed spin-drying. This directly leads to: a more complex mop bucket structure, requiring the design of an adaptation structure based on the chuck size and rotation trajectory, increasing design difficulty and manufacturing costs; and the formation of gaps and grooves in the spin-drying seat, making it easy for wastewater and impurities ejected from the chuck to remain, which is difficult to clean with regular rinsing. Long-term use can easily breed bacteria and produce odors, significantly increasing the maintenance difficulty of the mop bucket and reducing the user experience. In addition, in dry cleaning scenarios, traditional mops must rely on a rotating shaft inside the mop bucket to drive the mop head to rotate in order to throw impurities into the bucket. The existence of this rotating shaft makes the internal structure of the mop bucket complex and inconvenient to clean, thus becoming a new cleaning burden. Utility Model Content

[0004] In view of this, the present invention proposes a chuck-type mop assembly without a rotating shaft seat, which allows users to complete the dehydration without the need for a traditional mop bucket.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A chuck-type mop assembly without a rotating shaft includes a mop handle, the mop handle comprising: a fixed cover having a first cavity inside the fixed cover, the bottom end of the first cavity being an open end; a chuck disposed in the first cavity in a manner rotatable about the central axis of the fixed cover; and a drive device disposed on the fixed cover and connected to the chuck in a driving connection, the drive device being configured to: in response to a user's pressing operation, the power output end of the drive device drives the chuck to rotate about its central axis relative to the fixed cover.

[0007] To better achieve the above technical solution, optionally, the center of the top wall of the fixed cover is provided with a through hole communicating with the first cavity, and the driving device includes:

[0008] A cylindrical shaft is coaxially disposed on the top wall of the fixed cover and circumferentially surrounds the through hole. The inner cavity of the cylindrical shaft, the through hole, and the top of the first cavity together form a second cavity.

[0009] A rotating assembly is disposed in the second cavity in a manner that allows horizontal rotation but prevents axial movement;

[0010] A downward driving assembly is provided in the second cavity in an axially movable manner and is drivenly connected to the rotating assembly, such that when the downward driving assembly is driven to move downward in the axial direction, it drives the rotating assembly to rotate in the first direction; when the downward driving assembly moves upward in the axial direction, it drives the rotating assembly to rotate in the second direction opposite to the first direction.

[0011] And a handheld lever, the bottom end of which extends into the second cavity and is connected to the pressure drive assembly to drive the pressure drive assembly to move axially downward;

[0012] The chuck and the rotating assembly are connected by a one-way transmission component, which only allows the rotating assembly to drive the chuck to rotate in the first direction.

[0013] Optionally, the rotating assembly includes a helical rod, a first connecting shaft, a second connecting shaft, and a one-way transmission component arranged coaxially from top to bottom. The bottom end of the helical rod is hinged to the top end of the first connecting shaft, the bottom end of the first connecting shaft is hinged to the top end of the second connecting shaft, the one-way transmission component is fitted onto the bottom of the second connecting shaft, and the chuck is fixedly fitted onto the one-way transmission component.

[0014] Optionally, the cylindrical shaft includes an upper cylindrical body, a cylindrical shaft seat, a hinged cylindrical shaft, and a fixed shaft seat arranged coaxially from top to bottom. The fixed shaft seat surrounds the through hole and is fixed to the top wall of the fixed cover. The top end of the cylindrical shaft seat is fixedly fitted inside the bottom end of the upper cylindrical body. The top end of the hinged cylindrical shaft is hinged to the bottom end of the cylindrical shaft seat. The bottom end of the hinged cylindrical shaft is hinged to the fixed shaft seat. The hinge axis of the hinged cylindrical shaft and the cylindrical shaft seat, as well as the hinge axis of the helical rod and the first connecting shaft, are collinear. The hinge axis of the hinged cylindrical shaft and the fixed shaft seat, as well as the hinge axis of the first connecting shaft and the second connecting shaft, are collinear.

[0015] Optionally, a bushing is provided around the through hole in the first cavity, which is fixedly connected to the inner top surface of the fixed cover and coaxial with the second connecting shaft. The bushing and the inner top surface of the fixed cover form a shaft assembly space, and the second connecting shaft is horizontally rotatable around the central axis and is disposed in the shaft assembly space.

[0016] Optionally, the inner wall of the upper cylinder includes a small diameter section and a large diameter section from top to bottom, the downward pressure drive assembly includes a drive sleeve, the bottom outer wall of the drive sleeve is fixed with a sliding ring that slides with the inner wall of the large diameter section, and the central axis of the drive sleeve is provided with a through hole that engages with the screw groove of the screw rod.

[0017] Optionally, the cylinder bearing includes an outer cylinder section and an inner cylinder section coaxially arranged. The inner cylinder section is sleeved inside the lower section of the upper cylinder, and its outer wall is provided with two protrusions spaced apart in the circumferential direction. The lower section of the upper cylinder has a connecting hole adapted to the two protrusions. The inner cylinder section and the upper cylinder are fixedly connected by the snap-fit ​​engagement of the protrusions and the connecting hole.

[0018] Optionally, the downward driving assembly further includes an elastic element sleeved outside the helical rod. One end of the elastic element abuts against the lower top surface of the driving sleeve, and the other end of the elastic element abuts against the connecting surface of the outer cylinder section and the inner cylinder section. The elastic element is configured to be compressed when the downward driving sleeve moves downward, and to provide an upward restoring force for the downward driving sleeve.

[0019] Optionally, the outer edge of the fixed cover is provided with at least two radially outwardly extending feet at circumferential intervals.

[0020] Optionally, it also includes a mop bucket, wherein a plurality of bearing protrusions are circumferentially spaced on the upper part of the inner wall of the mop bucket, and the top surface of the bearing protrusions is provided with positioning grooves for supporting the legs, and a clearance notch is formed between adjacent bearing protrusions for inserting the bottom of the mop handle into the mop bucket.

[0021] The beneficial effects of this utility model are:

[0022] 1. By eliminating the rotating shaft seat design, the complex central rotating support structure (such as bearings, bushings, etc.) in traditional mop buckets is completely omitted. This not only greatly simplifies the mechanical structure of the mop bucket itself and reduces the complexity of molds and manufacturing costs, but also avoids the drawbacks of easy wear and regular maintenance of rotating shaft seats.

[0023] 2. Two fixing methods are provided to achieve the dehydration and cleaning functions, and users can choose flexibly according to the usage scenario and habits.

[0024] 3. The locking function of the fixed cover and the avoidance function when washing the mop are integrated into the structure of the mop bucket, realizing the multi-functionality of the component, avoiding the need for an additional dedicated locking mechanism, and making the overall structure more compact and efficient.

[0025] 4. By omitting the rotating shaft seat, which is prone to failure due to dirt entanglement or lubrication failure, the core components of the transmission system are integrated into the handle and chuck, reducing the failure rate of the mop bucket and improving the reliability and service life of the entire assembly. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a chuck-type mop assembly without a rotating shaft according to an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Exploded view;

[0028] Figure 3 yes Figure 1 Isometric sectional view of a partial structure;

[0029] Figure 4 yes Figure 1 A three-dimensional schematic diagram of the local structure from the first angle;

[0030] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the local structure from a second angle;

[0031] Figure 6 yes Figure 1 Top view of a partial structure;

[0032] Figure 7 yes Figure 6 Sectional view along axis AA;

[0033] Figure 8 yes Figure 6 BB-direction sectional view;

[0034] Figure 9 yes Figure 2 Enlarged view of the middle section structure;

[0035] Figure 10 yes Figure 1 Isometric sectional view of the mop bucket;

[0036] Figure label:

[0037] Fixed cover 10, first cavity 101, through hole 102, support leg 103, chuck 20, drive device 30, screw rod 301, first connecting shaft 302, second connecting shaft 303, limiting ring 3031, one-way transmission component 304, bushing 305, annular body 3051, connecting ear 3052, ring platform 3053, cylindrical shaft 31, upper cylindrical body 311, small diameter section 3111, large diameter section 3112, connecting hole 3113, cylindrical shaft seat 312, outer cylindrical section 3121, inner cylindrical section 3122, protrusion 3123, hinged cylindrical shaft 313, fixed shaft seat 314, drive sleeve 321, sliding ring 3211, through hole 3212, elastic element 322, hand handle 34, mop bucket 40, bearing boss 41, positioning groove 42, avoidance notch 43. Detailed Implementation

[0038] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. Identical components are indicated by the same reference numerals.

[0039] Please see Figures 1 to 10 This utility model discloses a chuck-type mop assembly without a rotating shaft seat, including a mop handle and a mop bucket 40.

[0040] like Figure 1-9 As shown, the mop handle includes a fixed cover 10, a chuck 20, and a drive device 30. The fixed cover 10 contains a first cavity 101 with an open bottom. The chuck 20 is rotatable around the central axis of the fixed cover 10 within the first cavity 101. The drive device 30 is mounted on the fixed cover 10 and connected to the chuck 20. The drive device 30 is configured to drive the chuck 20 to rotate relative to the fixed cover 10 around its central axis in response to a user's downward pressure. In dry cleaning scenarios, there is no need to use a traditional mop bucket with a rotating shaft. The powerful centrifugal force generated by the high-speed rotating mop effectively dislodging solid impurities such as dust and hair from the mop head into a regular mop bucket, facilitating the collection and cleaning of these impurities. This solves the problem of the extremely tedious cleaning of impurities from the mop head after dry cleaning with traditional mops.

[0041] like Figure 2 , Figure 3 , Figure 7 as well as Figure 8 As shown, the top wall of the fixed cover 10 has a through hole 102 communicating with the first cavity 101. The driving device 30 includes a cylindrical shaft 31, a rotating assembly, a pressing drive assembly, and a hand handle 34. The cylindrical shaft 31 is coaxially arranged on the top wall of the fixed cover 10 and surrounds the through hole 102. The inner cavity of the cylindrical shaft 31, the through hole 102, and the top of the first cavity 101 together form a second cavity. The rotating assembly is arranged in the second cavity in a manner that allows horizontal rotation but not axial movement. The pressing drive assembly is arranged in the second cavity in a manner that allows axial movement. It is also connected to the rotating component for driving, so that when the pressing drive component is driven to move downward along the axial direction, it drives the rotating component to rotate in the first direction; when the pressing drive component moves upward along the axial direction, it drives the rotating component to rotate in the second direction opposite to the first direction. The bottom end of the hand lever 34 extends into the second cavity and is connected to the pressing drive component to drive the pressing drive component to move downward along the axial direction. The chuck 20 and the rotating component are connected by a one-way transmission component 304. The one-way transmission component 304 only allows the rotating component to drive the chuck 20 to rotate in the first direction.

[0042] Specifically, when the user presses down on the handle 34 axially, the pressing drive assembly moves downward accordingly. During this process, the pressing drive assembly drives the rotating assembly to rotate in the first direction, thereby causing the chuck 20 and the mop on it to rotate in the first direction. After the pressing drive assembly reaches the lowest position of its stroke, the user lifts the handle 34 (or it is driven by the elastic element 322 to reset), and the pressing drive assembly returns upward. During this upward movement, the pressing drive assembly drives the rotating assembly to rotate in the second direction opposite to the first direction. However, the chuck 20 and the rotating assembly are connected by a one-way transmission member 304, so that the chuck 20 continues to rotate under inertia during this stage without reverse rotation. Through the continuous reciprocating pressing and lifting of the handle 34, the axial linear motion can be continuously converted into the unidirectional rotational motion of the chuck 20, thereby achieving the function of dehydration or removing impurities.

[0043] like Figures 2-8 As shown, the rotating assembly includes a screw rod 301, a first connecting shaft 302, and a second connecting shaft 303 arranged coaxially from top to bottom. The bottom end of the screw rod 301 is hinged to the top end of the first connecting shaft 302, and the bottom end of the first connecting shaft 302 is hinged to the top end of the second connecting shaft 303. A one-way transmission component 304 is fitted onto the bottom of the second connecting shaft 303, and a chuck 20 is fixedly fitted onto the one-way transmission component 304.

[0044] In this embodiment, the one-way transmission component 304 is preferably an HF one-way needle roller bearing. The chuck 20 is fixedly connected to the outer ring of the one-way bearing, and the second connecting shaft 303 is fixedly connected to the inner ring of the one-way transmission component 304. When the second connecting shaft 303 rotates in the first direction, it drives the outer ring of the one-way bearing and the chuck 20 to rotate synchronously. When the second connecting shaft 303 rotates in the second direction, due to the inherent characteristics of the one-way bearing, the outer ring of the one-way bearing maintains its original state, that is, it rotates in the first direction, so that the chuck 20 can only rotate in the first direction. The HF one-way needle roller bearing is a directly purchased component, and its specific structure will not be described in detail.

[0045] In this embodiment, it should be noted that if the first direction is clockwise or counterclockwise, then the second direction is either counterclockwise or clockwise.

[0046] In this embodiment, the two ends of the first connecting shaft 302 are hinged to the spiral rod 301 and the second connecting shaft 303 respectively. Through this hinge structure, the rotating component can swing in different directions, thereby changing the overall height of the mop so that it can adapt to the cleaning needs of different low spaces.

[0047] like Figures 2-8As shown, in order to accommodate the oscillation of the rotating component, the structure of the cylindrical shaft 31 needs to be improved. Specifically, the cylindrical shaft 31 includes an upper cylindrical body 311, a cylindrical shaft seat 312, a hinged cylindrical shaft 313, and a fixed shaft seat 314 arranged coaxially from top to bottom. The fixed shaft seat 314 surrounds the through hole 102 and is fixed to the top wall of the fixed cover 10. The top end of the cylindrical shaft seat 312 is fixedly fitted inside the bottom end of the upper cylindrical body 311. The top end of the hinged cylindrical shaft 313 is hinged to the bottom end of the cylindrical shaft seat 312, and the bottom end of the hinged cylindrical shaft 313 is hinged to the fixed shaft seat 314. The hinge axis of the hinged cylindrical shaft 313 and the cylindrical shaft seat 312, and the hinge axis of the screw rod 301 and the first connecting shaft 302 are collinear. The hinge axis of the hinged cylindrical shaft 313 and the fixed shaft seat 314, and the hinge axis of the first connecting shaft 302 and the second connecting shaft 303 are collinear.

[0048] In this embodiment, the axis of the hinge shaft of the cylindrical shaft seat 312 and the hinge shaft of the hinged cylindrical shaft 313, and the axis of the hinge shaft of the hinged cylindrical shaft 313 and the fixed shaft seat 314 are perpendicular to each other in space, so that the cylindrical shaft 31, the rotating component and the handle 34 can be bent in four basic directions (such as front, back, left and right), with an included angle of about 90 degrees between each direction. This structure not only reduces the overall height of the mop handle, making it easier to clean and store compactly in low spaces (such as under furniture), but also allows users to adjust their operating posture more freely and reduce fatigue.

[0049] like Figures 7-8 As shown, a bushing 305 is provided in the first cavity 101 around the through hole 102, which is fixedly connected to the inner top surface of the fixed cover 10 and coaxial with the second connecting shaft 303. The bushing 305 and the inner top surface of the fixed cover 10 form a shaft assembly space. The second connecting shaft 303 can be horizontally rotated around the central axis and is located in the shaft assembly space.

[0050] like Figure 9 As shown, specifically, the bushing 305 includes an annular body 3051, two symmetrical connecting ears 3052 integrally disposed on the outer annular wall of the annular body 3051, and an annular platform 3053 integrally disposed on the inner annular wall of the annular body 3051. The bushing 305 is fixed in the first cavity 101 by screws that pass through the two connecting ears 3052 and are embedded in the studs of the fixing cover 10. The bottom outer wall of the second connecting shaft 303 is provided with a limiting ring 3031. The top surface of the limiting ring 3031 abuts against the inner top surface of the fixing cover 10, and the bottom surface of the limiting ring 3031 abuts against the annular platform 3053, so that the second connecting shaft 303 can only be rotatably disposed in the bushing 305, thereby realizing the limiting of the second connecting shaft 303, and thus realizing that the rotating component is disposed in the second cavity in a manner that can rotate horizontally but cannot move axially.

[0051] like Figure 7 and Figure 8As shown, in this embodiment, the inner wall of the upper cylinder 311 includes a small diameter section 3111 and a large diameter section 3112 from top to bottom. The downward pressure drive assembly includes a drive sleeve 321. The bottom outer wall of the drive sleeve 321 is fixed with a sliding ring 3211 that slides in cooperation with the inner wall of the large diameter section 3112. The drive sleeve 321 has a through hole 3212 in the central axial direction that engages with the screw groove of the screw rod 301. The through hole 3212 cooperates with the screw rod 301, so that the screw rod 301 rotates during the lifting and lowering process of the drive sleeve 321. The top end of the drive sleeve 321 is fixedly fitted into the bottom end of the hand handle 34. By setting the small diameter section 3111 and the large diameter section 3112, it is convenient to assemble the drive sleeve 321 and limit the movement stroke of the drive sleeve 321.

[0052] like Figure 4 and Figure 5 As shown, in this embodiment, the bottom end of the cylindrical shaft seat 312, the upper and lower ends of the hinged cylindrical shaft 313, and the fixed shaft seat 314 all have a U-shaped fork structure. This structure not only provides stable support for the hinge point, but also makes the folding action smooth and synchronous, effectively avoiding motion interference, and ultimately realizing the rapid and compact folding of the whole device, improving the convenience of operation and the portability of the product.

[0053] like Figure 2 As shown, the cylindrical shaft seat 312 includes an outer cylindrical section 3121 and an inner cylindrical section 3122 coaxially arranged. The inner cylindrical section 3122 is sleeved inside the lower section of the upper cylindrical body 311, and two protrusions 3123 are spaced apart on its outer wall circumferentially. The lower section of the upper cylindrical body 311 has a connecting hole 3113 that matches the two protrusions 3123. The inner cylindrical section 3122 and the upper cylindrical body 311 are fixedly connected by the snap-fit ​​of the protrusions 3123 and the connecting hole 3113. Specifically, both the cylindrical shaft seat 312 and the upper cylindrical body 311 are made of plastic ABS or PP, which has a certain elasticity, so that the cylindrical shaft seat 312 and the upper cylindrical body 311 are connected by snap-fit.

[0054] like Figure 3 , Figure 7 and Figure 8 As shown, the downward drive assembly also includes an elastic element 322, which is sleeved on the outside of the screw rod 301. One end of the elastic element 322 abuts against the lower top surface of the drive sleeve 321, and the other end of the elastic element 322 abuts against the connecting surface of the outer cylinder section 3121 and the inner cylinder section 3122. The elastic element 322 is configured to be compressed when the downward drive sleeve 321 moves downward, and to provide an upward restoring force for the downward drive sleeve 321.

[0055] Specifically, the elastic element 80 is preferably a compression spring. After the downward pressure is released, the reset function of the elastic element 80 automatically pushes the downward drive assembly and the hand lever 34 to move upward quickly, reducing the manual lifting force and improving the convenience and efficiency of operation. At the same time, it can also buffer the downward pressing process, improve the operating feel, and reduce the impact damage to internal parts. In addition, the constant elastic force helps to maintain reliable engagement between the drive sleeve 321 and the helical rod 301, preventing accidental disengagement and ensuring the continuity of power transmission.

[0056] like Figure 6 As shown, in this embodiment, at least two radially extending legs 103 are provided at circumferential intervals on the outer edge of the fixed cover 10. Preferably, there are four legs 103, which are evenly distributed on the circumferential direction of the outer edge of the fixed cover 10.

[0057] like Figure 10 As shown, the mop assembly also includes a mop bucket 40. Multiple support protrusions 41 are circumferentially spaced on the upper part of the inner wall of the mop bucket 40. The top surface of the support protrusions 41 is provided with positioning grooves 42 for supporting the support legs 104. A clearance notch 42 is formed between adjacent support protrusions 41 for inserting the bottom of the mop handle into the mop bucket 40.

[0058] Specifically, the support leg 103 corresponds one-to-one with the bearing boss 41 and the positioning groove 42. By inserting the support leg 103 into the positioning groove 42 and engaging with the bearing boss 41, the circumferential locking of the fixed cover 10 is achieved.

[0059] The chuck-type mop assembly without a rotating shaft provided in this embodiment can achieve dehydration and dry cleaning functions through two operating modes. In the first mode, the user holds the upper cylinder 311, which, through a hinged connection, keeps the fixed cover 10 relatively stationary. In this mode, the vertical linear motion of the hand lever 34 is converted into high-speed rotation of the chuck 20 and the mop head, thereby achieving dehydration or cleaning. In the second mode, the fixed cover 10 is directly locked circumferentially by engaging the support leg 103 on the fixed cover 10 with the positioning groove 42 of the mop bucket 40. In this state, driving the hand lever 34 can also achieve high-speed rotation of the mop head. When it is necessary to clean the mop head, the support leg 103 can be moved to the bottom of the mop bucket 40 through the clearance notch 42 on the side wall of the mop bucket 40 for operation.

[0060] The chuck-type mop assembly without a rotating shaft provided in this embodiment has the following advantages compared to traditional rotary mop assemblies:

[0061] 1. By eliminating the rotating shaft seat design, the complex central rotating support structure (such as bearings, bushings, etc.) in traditional mop buckets is completely omitted. This not only greatly simplifies the mechanical structure of the mop bucket itself and reduces the complexity of molds and manufacturing costs, but also avoids the drawbacks of easy wear and regular maintenance of rotating shaft seats.

[0062] 2. Two fixing methods are provided to achieve the dehydration and cleaning functions, and users can choose flexibly according to the usage scenario and habits. For example, the upper drum can be fixed in a confined space; when a lot of force is required, the fixing cover 10 can be directly locked to the mop bucket 40, which makes the operation more stable and effortless, thus helping to improve the ease of use of the product and the user experience.

[0063] 3. The locking function of the fixed cover 10 and the avoidance function when washing the mop are integrated into the structure of the mop bucket 40, which realizes the multi-functionality of the component, avoids the need to set up an additional special locking mechanism, and makes the overall structure more compact and efficient.

[0064] 4. By omitting the rotating shaft seat, which is prone to failure due to dirt entanglement or lubrication failure, the core components of the transmission system are integrated into the hand handle and chuck 20, reducing the failure rate of the mop bucket 40 and improving the reliability and service life of the entire assembly.

[0065] The technical solution of this utility model has been described in detail above with reference to specific embodiments. The specific embodiments described are used to help understand the concept of this utility model. Derivations and modifications made by those skilled in the art based on the specific embodiments of this utility model also fall within the protection scope of this utility model.

Claims

1. A chuck-type mop assembly without a rotating shaft, comprising a mop handle, characterized in that: The mop handle includes: A fixed cover (10) is provided inside the fixed cover (10), and the bottom end of the first cavity (101) is an open end; A chuck (20) is disposed within the first cavity (101) in a manner that allows it to rotate about the central axis of the fixed cover (10). And a drive device (30) disposed on the fixed cover (10) and connected to the chuck (20) in a driving manner, the drive device (30) being configured such that, in response to a user’s pressing operation, the power output end of the drive device (30) drives the chuck (20) to rotate about its central axis relative to the fixed cover (10).

2. A chuck-type mop assembly without a rotating shaft according to claim 1, characterized in that, The fixed cover (10) has a through hole (102) at the center of its top wall that communicates with the first cavity (101), and the driving device (30) includes: A cylindrical shaft (31) is coaxially disposed on the top wall of the fixed cover (10) and circumferentially surrounds the through hole (102). The inner cavity of the cylindrical shaft (31), the through hole (102) and the top of the first cavity (101) together form a second cavity. A rotating assembly is disposed in the second cavity in a manner that allows horizontal rotation but prevents axial movement; A downward driving assembly is provided in the second cavity in an axially movable manner and is drivenly connected to the rotating assembly, such that when the downward driving assembly is driven to move downward in the axial direction, it drives the rotating assembly to rotate in the first direction; when the downward driving assembly moves upward in the axial direction, it drives the rotating assembly to rotate in the second direction opposite to the first direction. And a handheld lever (34), the bottom end of which extends into the second cavity and is connected to the pressure drive assembly for driving the pressure drive assembly to move axially downward; The chuck (20) and the rotating assembly are connected by a one-way transmission member (304), which only allows the rotating assembly to drive the chuck (20) to rotate in the first direction.

3. A chuck-type mop assembly without a rotating shaft according to claim 2, characterized in that, The rotating assembly includes a spiral rod (301), a first connecting shaft (302), and a second connecting shaft (303) arranged coaxially from top to bottom. The bottom end of the spiral rod (301) is hinged to the top end of the first connecting shaft (302), and the bottom end of the first connecting shaft (302) is hinged to the top end of the second connecting shaft (303). The one-way transmission component (304) is fitted onto the bottom of the second connecting shaft (303), and the chuck (20) is fixedly fitted onto the one-way transmission component (304).

4. A chuck-type mop assembly without a rotating shaft according to claim 3, characterized in that, The cylindrical shaft (31) includes an upper cylindrical body (311), a cylindrical shaft seat (312), a hinged cylindrical shaft (313), and a fixed shaft seat (314) arranged coaxially from top to bottom. The fixed shaft seat (314) surrounds the through hole (102) and is fixed to the top wall of the fixed cover (10). The top end of the cylindrical shaft seat (312) is fixedly fitted inside the bottom end of the upper cylindrical body (311). The top end of the hinged cylindrical shaft (313) is connected to the cylindrical shaft. The bottom end of the seat (312) is hinged, and the bottom end of the hinged cylindrical shaft (313) is hinged to the fixed shaft seat (314). The hinged cylindrical shaft (313) and the hinged shaft seat (312) and the hinged shaft of the screw rod (301) are collinear with the hinged shaft of the first connecting shaft (302). The hinged cylindrical shaft (313) and the hinged shaft seat (314) and the hinged shaft of the first connecting shaft (302) and the second connecting shaft (303) are collinear with each other.

5. A chuck-type mop assembly without a rotating shaft according to claim 4, characterized in that, The first cavity (101) is provided with a bushing (305) around the through hole (102), which is fixedly connected to the inner top surface of the fixed cover (10) and coaxial with the second connecting shaft (303). The bushing (305) and the inner top surface of the fixed cover (10) form a shaft assembly space. The second connecting shaft (303) can be horizontally rotated around the central axis and is located in the shaft assembly space.

6. A chuck-type mop assembly without a rotating shaft according to claim 5, characterized in that, The inner wall of the upper cylinder (311) includes a small diameter section (3111) and a large diameter section (3112) from top to bottom. The downward pressure drive assembly includes a drive sleeve (321). The bottom outer wall of the drive sleeve (321) is fixed with a sliding ring (3211) that slides in cooperation with the inner wall of the large diameter section (3112). The drive sleeve (321) is provided with a through hole (3212) in the central axial direction that engages with the screw groove of the screw rod (301) for driving cooperation.

7. A chuck-type mop assembly without a rotating shaft according to claim 6, characterized in that, The cylindrical shaft seat (312) includes an outer cylindrical section (3121) and an inner cylindrical section (3122) coaxially arranged. The inner cylindrical section (3122) is sleeved inside the lower section of the upper cylindrical body (311), and two protrusions (3123) are spaced apart on its outer wall circumferentially. The lower section of the upper cylindrical body (311) is provided with a connecting hole (3113) that matches the two protrusions (3123). The inner cylindrical section (3122) and the upper cylindrical body (311) are fixedly connected by the snap-fit ​​of the protrusions (3123) and the connecting hole (3113).

8. A chuck-type mop assembly without a rotating shaft according to claim 7, characterized in that, The downward drive assembly further includes an elastic element (322) sleeved on the outside of the screw rod (301). One end of the elastic element (322) presses against the lower top surface of the drive sleeve (321), and the other end of the elastic element (322) presses against the connecting surface of the outer cylinder section (3121) and the inner cylinder section (3122). The elastic element (322) is configured to be compressed when the downward drive sleeve (321) moves downward, and to provide an upward restoring force for the downward drive sleeve (321).

9. A chuck-type mop assembly without a rotating shaft according to claim 1, characterized in that, The outer edge of the fixed cover (10) is provided with at least two radially outwardly extending feet (104) at circumferential intervals.

10. A chuck-type mop assembly without a rotating shaft according to claim 9, characterized in that, It also includes a mop bucket (40), on which a plurality of bearing protrusions (41) are arranged circumferentially on the upper part of the inner wall of the mop bucket (40). The top surface of the bearing protrusions (41) is provided with positioning grooves (42) for supporting the support legs (104). A clearance notch (43) is formed between adjacent bearing protrusions (41) for inserting the bottom of the mop handle into the mop bucket (40).

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