Limiting mechanism of a mopping device

Abstract

The utility model provides a limiting mechanism of a dragging and wiping device, the dragging and wiping device comprises: a clamping mechanism and a driving mechanism; the clamping mechanism comprises symmetrically arranged clamping blocks, the two clamping blocks can move closer to and away from each other; the driving mechanism comprises a pressing block and two moving blocks, the pressing block can drive the moving blocks to move in a direction perpendicular to the moving direction of the clamping blocks, the moving blocks are evenly provided with reversing structures on both sides of the clamping blocks, the reversing structures are connected to the clamping blocks, the reversing structures can drive the two clamping blocks to move closer to and away from each other; both moving blocks are provided with limiting mechanisms, the limiting mechanisms limit the movement of the moving blocks. The utility model has the following beneficial effects: by arranging a limiting mechanism on the moving block moving in a direction perpendicular to the moving direction of the clamping blocks to limit the movement of the moving blocks, it solves the technical problem of the complicated structure of the existing dragging and wiping devices with long lengths, and produces the technical effect that only two limiting mechanisms are needed regardless of the length of the dragging and wiping device.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning products, in particular to a limiting mechanism of a mopping device. Background Art

[0002] A mopping device is a device with a cleaning cloth, such as a mop or the like, and is specifically disclosed in a Chinese patent with publication number CN212415649U, which discloses a mopping device, wherein a clamping unit is provided in the width direction of a substrate and is driven and controlled by a driving unit to clamp and release a sheet-like cleaning member, and in order to maintain the clamping state, a locking unit is provided in the moving direction of the clamping unit, that is, in the width direction of the substrate, so as to keep the clamping unit in a state of clamping the sheet-like cleaning member.

[0003] However, if locking units are provided in the width direction of the substrate, if the length of the substrate is long, the number of locking units needs to be increased to ensure that the clamping unit can remain in a state of clamping the sheet-like cleaning member. Adding locking units will make the structure of the mopping device more complicated, resulting in an increase in production costs. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a limiting mechanism for a mopping and wiping device, which solves the technical problem that the prior mopping and wiping device has a long length and a complex structure.

[0005] According to a limiting mechanism of a mopping and wiping device described in an embodiment of the utility model, the mopping and wiping device includes:

[0006] Clamping mechanism: The clamping mechanism comprises symmetrically arranged clamping blocks, and the two clamping blocks can move towards and away from each other;

[0007] Driving mechanism: The driving mechanism is located between the two clamping blocks, and the driving mechanism includes a lower pressing block and two moving blocks. The lower pressing block is vertically arranged, and the two moving blocks are respectively arranged on both sides of the lower pressing block. The lower pressing block is transmission-connected with a moving block on one side, and the lower pressing block can drive the moving block to move in a direction perpendicular to the moving direction of the clamping block. The moving block is evenly provided with a reversing structure on both sides close to the clamping block, and the reversing structure is connected to the clamping block, and the reversing structure can drive the two clamping blocks to move closer to or away from each other;

[0008] Base plate: the clamping mechanism and the driving mechanism are both movably mounted on the base plate, a sheet-like cleaning member is mounted on the lower side of the base plate, and the two clamping blocks respectively cooperate with the two sides of the base plate to clamp the sheet-like cleaning member;

[0009] The two moving blocks are both provided with a limiting mechanism, and the limiting mechanism limits the movement of the moving blocks.

[0010] The technical principle of the utility model is: the pressing block drives the moving block to move in a direction perpendicular to the moving direction of the clamping block, that is, the length direction of the substrate, and the reversing structure during movement drives the clamping blocks to move closer to or away from each other, thereby clamping or releasing the sheet-like cleaning piece. When the clamping block clamps the sheet-like cleaning piece, the limiting mechanism can clamp the moving block, making the moving block unable to move, thereby allowing the clamping block to maintain a state of clamping the sheet-like cleaning piece.

[0011] Because the moving direction of the limiting mechanism is the length direction of the substrate, no matter how long the actual substrate and the clamping block are set, only two limiting mechanisms are needed to achieve the limiting, and there is no need to increase the limiting mechanism.

[0012] Compared with the prior art, the utility model has the following beneficial effects: by arranging a limit mechanism on the moving block that moves in the direction perpendicular to the moving direction of the clamping block, the movement of the moving block is limited, which solves the technical problem of the complex structure of the existing long-length dragging and wiping device, and produces the technical effect that only two limit mechanisms are needed regardless of the length of the dragging and wiping device.

[0013] Furthermore, the moving block is provided with inclined teeth, and the limiting mechanism includes a limiting block and an opening and closing block. One end of the limiting block is provided with inclined teeth, and the inclined teeth of the moving block and the inclined teeth of the limiting block are inserted into each other. The other end of the limiting block is provided with an elastic member, and the elastic member presses the limiting block onto the moving block. A through hole is provided in the middle of the limiting block, and a protruding block is provided on the opening and closing block, and the protruding block is inserted into the through hole. The side of the protruding block away from the inclined teeth is set as an inclined structure, and the horizontal movement of the inclined structure can drive the limiting block to move vertically.

[0014] By pressing the opening and closing block, the limit block does not restrict the movement of the moving block; when the opening and closing block is not pressed, the limit block restricts the movement of the moving block.

[0015] Furthermore, the substrate is provided with a limiting channel along the moving direction of the moving block, the moving block is installed in the limiting channel, a through hole is provided in the middle of the limiting channel, limiting edges are provided on both sides of the through hole, the lower pressing block is inserted into the through hole, and raised columns are provided on both sides of the lower pressing block, a vertical groove is provided on the limiting edge, the raised column is inserted into the vertical groove, and the lower pressing block moves along the length direction of the vertical groove.

[0016] Furthermore, mounting columns are provided at both ends of the limiting channel, the interior of the mounting columns is hollow and communicates with the limiting channel, the limiting block is installed inside the mounting columns, the elastic part of the limiting block is arranged on the top of the mounting column, a through groove is provided on the side of the mounting column, the protruding block passes through the through groove and is inserted into the through hole, movable grooves are also provided at both ends of the limiting channel, the opening and closing block is provided with a matching edge, the matching edge is inserted into the movable groove, and the opening and closing block moves along the length direction of the movable groove.

[0017] Furthermore, an upper cover is provided on the upper side of the substrate, a receiving cover is provided in the middle of the upper cover, the limiting edge and the mounting column are both inserted into the receiving cover, matching holes are provided on both sides of the receiving cover, and the opening and closing block is installed in the matching holes.

[0018] Furthermore, the lower pressing block and a movable block are both provided with inclined surfaces, and the two inclined surfaces are tightly fitted with each other. An elastic member is provided at one end of the movable block away from the lower pressing block. The elastic member of the movable block presses the movable block to move toward the side of the lower pressing block. An elastic member is also provided between the lower pressing block and the substrate.

[0019] Furthermore, the inclined teeth are inclined toward one side of the downward pressing block.

[0020] The elastic part at the moving block can drive the moving block and the reversing structure to move closer to the pressing block, and at the same time drive the clamping block to release the sheet cleaning part. The elastic part at the pressing block is used to move the pressing block upward to make room for the moving block to move. The inclined teeth of the moving block are inclined toward one side of the pressing block, and then when cooperating with the limit block, the moving block can only move away from the pressing block, and cannot move closer to the pressing block through the elastic part.

[0021] Furthermore, the two moving blocks are provided with inclined surfaces, and the pressing block is provided with two inclined surfaces. The inclined surfaces of the two moving blocks are respectively tightly matched with the two inclined surfaces on the pressing block on both sides of the clamping mechanism.

[0022] The inclined surfaces of the two moving blocks respectively cooperate with the two inclined surfaces of the pressing block, and clamping force is applied to the clamping blocks on both sides of the pressing block at the same time, so that the clamping force is more uniform.

[0023] Furthermore, the inclined surface of the pressing block is a rounded structure, and the inclined surface of the moving block is a concave arc shape or a convex arc shape.

[0024] Furthermore, the switching structure is an inclined rod, which is inclined to the moving direction of the clamping block. The inclined rods on both sides of the moving block are symmetrically arranged with each other. The clamping block is provided with an inclined groove, and the inclined rod is inserted into the inclined groove. A sliding structure is provided between the clamping block and the substrate, and the sliding direction of the sliding structure is the moving direction of the clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the mopping device of Example 1 of the utility model after the upper cover is removed.

[0026] Figure 2 This is a main cross-sectional view of the mopping device according to Embodiment 1 of the utility model.

[0027] Figure 3 It is a cross-sectional view of the sliding structure of the mopping device of Example 1 of the utility model.

[0028] Figure 4 This is a schematic structural diagram of the mopping device with installed pipes according to Example 1 of the utility model.

[0029] Figure 5 This is a cross-sectional view of the auxiliary guide protrusion of the mopping device in Example 1 of the utility model.

[0030] Figure 6 It is a cross-sectional view of the limiting mechanism of the mopping device of Example 1 of the utility model.

[0031] Figure 7 This is a main cross-sectional view of the mopping device according to Embodiment 2 of the present utility model.

[0032] Figure 8 This is a schematic diagram of the inclined surface matching structure of Example 3 of the utility model.

[0033] Fig. 9 It is a schematic diagram of the inclined surface matching structure of Example 4 of the utility model.

[0034] In the above drawings:

[0035] 100, clamping mechanism; 101, clamping block; 110, flange; 111, raised tooth; 120, inclined groove; 130, sliding structure; 131, positioning screw; 132, sliding hole; 140, slot; 141, raised edge;

[0036] 200, driving mechanism; 201, inclined surface; 202, elastic member; 210, pressing block; 211, protruding column; 220, moving block; 221, inclined teeth; 230, connecting block; 231, pipe fitting; 240, inclined rod; 241, roller;

[0037] 300, substrate; 301, sheet-like cleaning member; 302, convex strip; 303, baffle; 310, guide convex edge; 311, guide groove; 320, limit passage; 321, through hole; 322, limit edge; 323, vertical groove; 324, movable groove; 330, auxiliary guide protrusion; 331, groove; 340, mounting column; 341, through groove;

[0038] 400, limiting mechanism; 410, limiting block; 411, through hole; 420, opening and closing block; 421, raised block; 422, inclined surface structure; 423, matching edge;

[0039] 500, upper cover; 510, receiving cover; 511, matching hole; 512, channel structure. DETAILED DESCRIPTION

[0040] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0041] Example 1

[0042] like Figure 1-3 The mopping device shown includes a clamping mechanism 100, a driving mechanism 200 and a base plate 300. A sheet cleaning member 301 is installed on the lower side of the base plate 300. Two clamping blocks 101 respectively cooperate with the two sides of the base plate 300 to clamp the sheet cleaning member 301. The driving mechanism 200 is used to drive the clamping mechanism 100.

[0043] like Figure 1 , 3 As shown, the clamping mechanism 100 includes symmetrically arranged clamping blocks 101, and the two clamping blocks 101 can move towards and away from each other, that is, move along the length direction of the guide groove 311. Specifically, the substrate 300 has protruding strips 302 fixed on both sides of the sheet cleaning member 301. The clamping block 101 has an integrally formed flange 110 on one side of the sheet cleaning member 301. The flange 110 is evenly distributed with integrally formed raised teeth 111 on the side close to the substrate 300. The raised teeth 111 are located on the upper side of the protruding strip 302, and then the raised teeth 111 cooperate with the protruding strip 302 to ensure that the sheet cleaning member 301 is not easily detached.

[0044] like Figure 1-2 As shown, guide convex edges 310 are integrally formed on both side edges of the substrate 300 that do not clamp the sheet-like cleaning member 301, and guide grooves 311 are provided on the guide convex edges 310. The two side edges of the clamping block 101 are inserted into the guide grooves 311, that is, the clamping block 101 is movably installed on the substrate 300, allowing the clamping block 101 to move along the length direction of the guide grooves 311.

[0045] like Figure 1-2 As shown, the driving mechanism 200 includes a lower pressing block 210 and two moving blocks 220, wherein the lower pressing block 210 is vertically arranged at the center of the substrate 300, and the two moving blocks 220 are respectively arranged on both sides of the lower pressing block 210, and the lower pressing block 210 and one moving block 220 are both provided with inclined surfaces 201, and the two inclined surfaces 201 are tightly matched with each other, and the moving block 220 is evenly provided with an integrally formed reversing structure on both sides close to the clamping block 101, and the reversing structure on one side is connected to the clamping block 101 on the same side, and the lower pressing block 210 can drive the moving block 220 and the reversing structure to move in a direction perpendicular to the moving direction of the clamping block 101, and the reversing structure can drive the two clamping blocks 101 to move closer to and away from each other to realize the clamping function, and the specific inclined surface 201 of the lower pressing block 210 can be an inclined surface or an arc surface, and the inclined surface 201 of the moving block 220 is an inclined surface.

[0046] like Figure 1-2As shown, the substrate 300 is integrally formed with a limiting channel 320 along the moving direction of the moving block 220, the moving block 220 is installed in the limiting channel 320, a through hole 321 is provided in the middle of the limiting channel 320, and limiting edges 322 are integrally formed on both sides of the through hole 321, the lower pressing block 210 is inserted into the through hole 321, and raised columns 211 are integrally formed on both sides of the lower pressing block 210, a vertical groove 323 is provided on the limiting edge 322, the raised column 211 is inserted into the vertical groove 323, and the lower pressing block 210 moves along the length direction of the vertical groove 323, thereby realizing that the driving mechanism 200 is movably installed on the substrate 300.

[0047] like Figure 1-2 As shown in , 4, a connecting block 230 is also clamped in the vertical groove 323, and the connecting block 230 is hinged with a pipe fitting 231 for an operator to hold and use the wiping device. The connecting block 230 is located on the upper side of the pressing block 210, and the connecting block 230 can move along the length direction of the vertical groove 323 to press the pressing block 210, and then the operator applies downward pressure to the pipe fitting 231, so that the pressing block 210 can move downward to drive the moving block 220.

[0048] like Figure 1 , 3 As shown, the reversing structure is a tilting rod 240, which is tilted to the moving direction of the clamping block 101. The tilting rods 240 on both sides of the moving block 220 are symmetrically arranged. The clamping block 101 is provided with a tilting groove 120, and the tilting rod 240 is inserted into the tilting groove 120. Specifically, a roller 241 is provided on the top of the tilting rod 240, and the roller 241 is arranged in the tilting groove 120. The roller 241 can roll along the tilting groove 120, so that the tilting rod 20 drives the clamping block 101 to move more smoothly; the clamping block 101 and A sliding structure 130 is provided between the substrates 300, and the sliding direction of the sliding structure 130 is the moving direction of the clamping block 101. The specific sliding structure 130 includes a positioning screw 131 fixed on the substrate 300 and a sliding hole 132 arranged on the clamping block 101. The positioning screw 131 is inserted into the sliding hole 132, and then the clamping block 101 can move in the sliding hole 132, that is, the moving direction of the clamping block 101. The sliding structure 130 cooperates with the guide flange 310 to improve the stability of the moving trajectory of the clamping block 101.

[0049] like Figure 1 , 5As shown, the clamping block 101 is provided with a plurality of slots 140, which extend to one side of the clamping block 101 away from the clamping sheet cleaning member 301. An auxiliary guide protrusion 330 is integrally formed at the position corresponding to the slot 140 on the substrate 300. The auxiliary guide protrusion 330 is inserted into the slot 140. The slot 140 is also integrally formed with a raised edge 141. A groove 331 is provided on the auxiliary guide protrusion 330, which is inserted into the groove 331. The clamping block 101 moves along the length direction of the groove 331, that is, the moving direction of the clamping block 101. The auxiliary guide protrusion 330, the sliding structure 130 and the guide protrusion 310 cooperate to further improve the stability of the moving trajectory of the clamping block 101.

[0050] The auxiliary guide protrusion 330 is fixed to the limiting channel 320 , which is equivalent to adding a structure similar to a reinforcing rib to the limiting channel 320 , thereby improving the strength of the limiting channel 320 .

[0051] like Figure 1-2 As shown, the moving block 220 is integrally formed with an inclined tooth 221, and the inclined tooth 221 of the moving block 220 is inclined toward the side of the pressing block 210. The inclined tooth 221 is connected to the limiting mechanism 400, and the limiting mechanism 400 can clamp the moving block 220 and prevent it from moving toward the side of the pressing block 210. The moving block 220 is provided with an elastic member 202 at one end of the moving block 220, and the substrate 300 is integrally formed with a blocking piece 30 at the elastic member 202 at one end of the moving block 220. 3, so that the elastic member 202 at one end of the moving block 220 is stuck between the blocking piece 303 and the moving block 220, ensuring that the elastic member 202 can press the moving block 220 to move to the side of the pressing block 210, and an elastic member 202 is also provided between the pressing block 210 and the base plate 300, that is, the two elastic members 202 are used for the clamping block 101 to release the sheet-like cleaning member 301, and the limiting mechanism 400 allows the clamping block 101 to keep clamping the sheet-like cleaning member 301.

[0052] like Figure 1-2 As shown, the limiting mechanism 400 includes a limiting block 410 and an opening and closing block 420, one end of the limiting block 410 is integrally formed with an inclined tooth 221, the inclined tooth 221 of the moving block 220 and the inclined tooth 221 of the limiting block 410 are engaged with each other to form a ratchet structure to prevent the moving block 220 from moving toward the side of the downward pressing block 210, the other end of the limiting block 410 is provided with an elastic member 202, the elastic member 202 presses the limiting block 410 on the moving block 220, a through hole 411 is provided in the middle of the limiting block 410, a protruding block 421 is integrally formed on the opening and closing block 420, the protruding block 421 is engaged with the through hole 411, the side of the protruding block 421 away from the inclined tooth 221 is provided with an inclined surface structure 422, the horizontal movement of the inclined surface structure 422 can drive the limiting block 410 to move vertically, so that the limiting block 410 is away from the moving block 220, so that the moving block 220 can move toward the side of the downward pressing block 210.

[0053] In practical applications, the length of the substrate 300 and the clamping block 101 does not need to be increased without increasing the number of the limiting mechanisms 400. It is only necessary to increase the number of the reversing structures by the same amount to ensure the clamping force. As a result, the increase in length will not make the overall structure too complicated.

[0054] like Figure 1-2 As shown in , 6, mounting columns 340 are integrally formed at both ends of the limiting channel 320. The interior of the mounting column 340 is hollow and communicates with the limiting channel 320. The limiting block 410 is installed inside the mounting column 340. The elastic member 202 of the limiting block 410 is arranged at the top of the mounting column 340 to ensure that the elastic member 202 of the limiting block 410 can press the limiting block 410 tightly against the moving block 220. A through groove 341 is provided on the side of the mounting column 340. The protruding block 421 passes through the through groove 341 and is inserted into the through hole 411. A movable groove 324 is also provided at both ends of the limiting channel 320. The opening and closing block 420 is integrally formed with a matching edge 423. The matching edge 423 is inserted into the movable groove 324. The opening and closing block 420 moves along the length direction of the movable groove 324.

[0055] like Figure 2-4 As shown, an upper cover 500 is installed on the upper side of the base plate 300, and a receiving cover 510 is integrally formed in the middle of the upper cover 500. The limiting edge 322 and the mounting column 340 are both inserted into the receiving cover 510. Matching holes 511 are provided on both sides of the receiving cover 510. The opening and closing block 420 is installed in the matching holes 511, so that the opening and closing block 420 can only move within the length range of the movable groove 324. A channel structure 512 is provided in the middle of the receiving cover 510. The channel structure 512 is used to connect the connecting block 230 with the pipe fitting 231, so that the connecting block 230 can only move within the length range of the vertical groove 323. The upper cover 500 and the base plate 300 are also connected and fixed at the sliding structure 130 by positioning screws 131.

[0056] Example 2

[0057] like Figure 7 As shown, the difference between this embodiment and embodiment 1 is that: the two moving blocks 220 are both provided with an inclined surface 201, and the lower pressing block 210 is provided with two inclined surfaces 201, and the inclined surfaces 201 of the two moving blocks 220 are respectively tightly matched with the two inclined surfaces 201 on the lower pressing block 210 on both sides of the clamping mechanism 100, that is, one moving block 220 in embodiment 1 is an active part, and the other is passively moved by the clamping block 101, while the two moving blocks 220 in embodiment 2 are both active parts, so the clamping force distribution is more uniform.

[0058] Example 3

[0059] like Figure 8As shown, the difference between this embodiment and embodiment 1-2 is that the inclined surface 201 of the pressing block 210 is a rounded structure, and the inclined surface 201 of the moving block 220 is a concave arc shape. When the pressing block 210 is pressed down, due to the structural characteristics of the concave arc shape, the moving block 220 can be moved quickly initially, and then the clamping block 101 can quickly approach the sheet-like cleaning sheet.

[0060] Example 3

[0061] like Fig. 9 As shown, the difference between this embodiment and embodiments 1-3 is that the inclined surface 201 of the pressing block 210 is a rounded structure, and the inclined surface 201 of the moving block 220 is a convex arc shape. When the pressing block 210 is pressed down, due to the structural characteristics of the convex arc shape, it is more labor-saving when the clamping block 101 quickly clamps the sheet-like cleaning sheet, and it is suitable for sheet-like cleaning sheets with harder materials.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A limiting mechanism of a mopping device, characterized in that: The mopping device comprises: Clamping mechanism: The clamping mechanism comprises symmetrically arranged clamping blocks, and the two clamping blocks can move towards and away from each other; Driving mechanism: The driving mechanism is located between the two clamping blocks, and the driving mechanism includes a lower pressing block and two moving blocks. The lower pressing block is vertically arranged, and the two moving blocks are respectively arranged on both sides of the lower pressing block. The lower pressing block is transmission-connected with a moving block on one side, and the lower pressing block can drive the moving block to move in a direction perpendicular to the moving direction of the clamping block. The moving block is evenly provided with a reversing structure on both sides close to the clamping block, and the reversing structure is connected to the clamping block, and the reversing structure can drive the two clamping blocks to move closer to or away from each other; Base plate: the clamping mechanism and the driving mechanism are both movably mounted on the base plate, a sheet-like cleaning member is mounted on the lower side of the base plate, and the two clamping blocks respectively cooperate with the two sides of the base plate to clamp the sheet-like cleaning member; The two moving blocks are both provided with a limiting mechanism, and the limiting mechanism limits the movement of the moving blocks.

2. A limiting mechanism of a mopping device according to claim 1, characterized in that: The moving block is provided with inclined teeth, and the limiting mechanism includes a limiting block and an opening and closing block. One end of the limiting block is provided with inclined teeth, and the inclined teeth of the moving block and the inclined teeth of the limiting block are inserted into each other. The other end of the limiting block is provided with an elastic member, and the elastic member presses the limiting block onto the moving block. A through hole is provided in the middle of the limiting block, and a protruding block is provided on the opening and closing block, and the protruding block is inserted into the through hole. The side of the protruding block away from the inclined teeth is set as an inclined surface structure, and the horizontal movement of the inclined surface structure can drive the limiting block to move vertically.

3. A limiting mechanism of a mopping device as claimed in claim 2, characterized in that: The base plate is provided with a limiting channel along the moving direction of the moving block, the moving block is installed in the limiting channel, a through hole is provided in the middle of the limiting channel, limiting edges are provided on both sides of the through hole, the lower pressing block is inserted into the through hole, and raised columns are provided on both sides of the lower pressing block, vertical grooves are provided on the limiting edges, the raised columns are inserted into the vertical grooves, and the lower pressing block moves along the length direction of the vertical groove.

4. A limiting mechanism of a mopping device as claimed in claim 3, characterized in that: Mounting posts are provided at both ends of the limiting channel, the interior of the mounting posts is hollow and communicates with the limiting channel, the limiting block is installed inside the mounting post, the elastic piece of the limiting block is arranged on the top of the mounting post, a through groove is provided on the side of the mounting post, the protruding block passes through the through groove and is inserted into the through hole, movable grooves are also provided at both ends of the limiting channel, the opening and closing block is provided with a matching edge, the matching edge is inserted into the movable groove, and the opening and closing block moves along the length direction of the movable groove.

5. The limiting mechanism of the mopping device according to claim 4, characterized in that: An upper cover is provided on the upper side of the base plate, a receiving cover is provided in the middle of the upper cover, the limiting edge and the mounting column are both inserted into the receiving cover, matching holes are provided on both sides of the receiving cover, and the opening and closing blocks are installed in the matching holes.

6. The limiting mechanism of the mopping device according to claim 2, characterized in that: The pressing block and a moving block are both provided with inclined surfaces, and the two inclined surfaces are closely matched with each other. An elastic member is provided at one end of the moving block away from the pressing block. The elastic member of the moving block presses the moving block to move toward the pressing block. An elastic member is also provided between the pressing block and the substrate.

7. A limiting mechanism of a mopping device as claimed in claim 6, characterized in that: The inclined teeth are inclined toward one side of the downward pressing block.

8. The limiting mechanism of the mopping device according to claim 6, characterized in that: The two moving blocks are both provided with inclined surfaces, and the lower pressing block is provided with two inclined surfaces. The inclined surfaces of the two moving blocks are respectively closely matched with the two inclined surfaces on the lower pressing block on both sides of the clamping mechanism.

9. A limiting mechanism of a mopping device according to claim 6 or 8, characterized in that: The inclined surface of the pressing block is a rounded structure, and the inclined surface of the moving block is a concave arc shape or a convex arc shape.

10. The limiting mechanism of the mopping device according to claim 6 or 8, characterized in that: The reversing structure is an inclined rod, which is inclined to the moving direction of the clamping block. The inclined rods on both sides of the moving block are symmetrically arranged. The clamping block is provided with an inclined groove, and the inclined rod is inserted into the inclined groove. A sliding structure is provided between the clamping block and the base plate, and the sliding direction of the sliding structure is the moving direction of the clamping block.

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