Collodion mop head

Abstract

The invention belongs to the technical field of collodion mops, and particularly relates to a collodion mophead which comprises a collodion head and a water squeezing frame, squeezing devices are arranged on the water squeezing frame and arranged on the two sides of the collodion head respectively, in the using process, the collodion head can move relative to the squeezing devices, water is squeezed out of the collodion head through the squeezing devices, and the collodion mophead is convenient to use. The extrusion device comprises a left compression roller set and a right compression roller set which are arranged on the two sides of the collodion cotton head respectively, an extrusion gap used for extruding the collodion cotton head is formed between the left compression roller set and the right compression roller set, the left compression roller set and the right compression roller set each comprise at least two integrally-arranged compression rollers, and the compression rollers are vertically and sequentially arranged. The pressing roller penetrates through the water squeezing frame and extends towards the two sides of the water squeezing frame; connecting pieces are arranged at the two ends of the pressing rollers, the left pressing roller set and the right pressing roller set are connected through the connecting pieces, elastic parts are arranged on the connecting pieces, and the elastic parts can pull the left pressing roller set and the right pressing roller set to abut against the two sides of the collodion cotton head respectively.

Description

Technical Field

[0001] This invention belongs to the field of PVA mop technology, and specifically relates to a PVA mop head. Background Technology

[0002] PVA mops are a common type of mop. The mop head is made of polyvinyl alcohol (PVA) foam, which allows the mop to quickly absorb water and dirt, making it particularly suitable for daily household cleaning.

[0003] Traditional PVA mops typically include a pressure roller and a traction device. The traction device drives the PVA head to move relative to the pressure roller, which then squeezes and cleans the PVA head. For example, Chinese invention patent CN 202322128600.3 discloses a mop with an easily detachable PVA head, which includes a mop handle and a PVA head. It further includes: a squeezing device located at one end of the mop handle, with the PVA head positioned on the side of the squeezing device away from the mop handle; and a movable tensioning assembly connected to the mop handle and detachably connected to the PVA head through the squeezing device. The squeezing device includes: a fixing frame fixedly connected to one end of the mop handle; and dehydrating rollers, with dehydrating rollers located at the front and rear ends of the fixing frame near the PVA head, with a gap between the front and rear dehydrating rollers for squeezing and dehydrating the PVA head. As a further technical solution of the present invention, the movable stretching assembly includes: a sliding sleeve, which is slidably sleeved outside the lower mop handle, and a threaded sleeve sleeved outside the lower mop handle is fixedly provided at the upper end of the sliding sleeve. The threaded sleeve has an external thread at the bottom of its periphery, and the diameter of the upper part of the threaded sleeve gradually increases from top to bottom. The threaded sleeve also has several shrinkage slits along the axis of the lower mop handle; a threaded cap, which is slidably sleeved outside the lower mop handle, and a threaded groove matching the external thread of the threaded sleeve is provided at the bottom of its inner side. The diameter of the upper part of the inner side of the threaded cap gradually increases from top to bottom; a rotating handle, one end of which is rotatably connected to the sliding sleeve; a pulling rod, which is symmetrically arranged on both sides of the rotating handle, and one end of which is rotatably connected to the rotating handle. The other end of the pulling rod moves through the fixed frame and is fixedly connected to a limiting seat. The pulling rod also moves through the dehydration gap between the dehydration rollers; and a mounting base, which is fixedly connected to the cotton head, and the mounting base slides and matches the groove of the limiting seat.

[0004] As shown in the attached drawings of the instruction manual, the above structure includes several sets of dewatering rollers. To facilitate the installation of the dewatering rollers, each set of dewatering rollers includes three coaxially arranged dewatering rollers, and there is a gap between the three dewatering rollers. However, the gap during the squeezing process will cause the dewatering rollers to not squeeze the cotton head sufficiently, affecting the squeezing effect of the cotton mop. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a sponge mop head with good water-squeezing effect.

[0006] The objective of this invention is achieved as follows:

[0007] A sponge mop head includes a sponge head and a wringing frame. The wringing frame is equipped with a squeezing device, which is respectively located on both sides of the sponge head. During use, the sponge head can move relative to the squeezing device, and the squeezing device squeezes water out of the sponge head. The squeezing device includes a left pressure roller group and a right pressure roller group respectively located on both sides of the sponge head. A squeezing gap is formed between the left pressure roller group and the right pressure roller group for squeezing the sponge head. Both the left pressure roller group and the right pressure roller group include at least two integrally set pressure rollers, which are arranged vertically in sequence and extend through the wringing frame to both sides of the wringing frame.

[0008] Both ends of the pressure roller are provided with connectors that connect the left and right pressure roller groups. The connectors are provided with elastic parts. During the squeezing process of the PVC mop head, the elastic parts can pull the left and right pressure roller groups to press against both sides of the PVC mop head, and make the squeezing gap adapt to the entry of the PVC mop head.

[0009] The present invention is further configured such that: the length of the pressure roller is greater than the length of the cotton head; or, the total length of the pressure roller and the connecting seat is greater than the length of the cotton head.

[0010] The invention is further configured such that: both the left and right pressure roller groups include a first pressure roller and a second pressure roller distributed vertically; the first pressure roller is detachably connected to the wringer; a connecting seat is provided on the first pressure roller; and the second pressure roller is mounted on the wringer via the connecting seat and the first pressure roller; during the wringing process of the sponge mop, the two sides of the sponge head are respectively pressed against the left and right pressure roller groups; the second pressure roller can move relative to the wringer via the connecting seat and the first pressure roller, thereby allowing the squeezing gap to adapt to the entry of the sponge head.

[0011] The present invention is further configured such that: the first pressure roller is disposed on the upper side of the second pressure roller, and the first pressure roller is fixedly connected to the dewatering frame, and the second pressure roller is rotatably connected to the connecting seat. During the process of the pressure roller squeezing the cotton head, the cotton head can drive the second pressure roller to rotate, thereby reducing the friction between the second pressure roller and the cotton head.

[0012] The present invention is further configured such that the distance between the first pressure rollers on both sides of the PVC head is less than the distance between the second pressure rollers on both sides of the PVC head.

[0013] The present invention is further configured such that: the connector includes a connecting part that is connected to the left pressure roller group and the right pressure roller group respectively, and an elastic part is provided between the connecting parts; during the wringing process of the plywood mop, the elastic part can deform, thereby increasing the distance between the left pressure roller group and the right pressure roller group.

[0014] The invention is further configured such that: the elastic part is made of an elastic material, the elastic part is bendable and can extend and retract in the length direction; during the extrusion process of the extrusion device extruding the cotton head, the cotton head can drive the elastic part to bend and deform, the elastic part can drive the cotton head to return to its original position, and the cotton head can pass through the left pressure roller group and the right pressure roller group.

[0015] The present invention is further configured such that: the dewatering frame is provided with a clearance groove, during the dewatering process of the cotton head, the cotton head can move in the clearance groove, and both sides of the clearance groove are provided with abutting walls; the abutting walls can abut against the pressure roller and drive the pressure roller to press against the side of the cotton head.

[0016] The invention is further configured such that: the lower end of the wringer extends to form an elastic arm, and a retaining wall is disposed on the elastic arm, or the retaining wall extends to the elastic arm, so that the elastic arm can abut against the side wall of the pressure roller; during the wringing process of the PVC mop, the PVC head can be driven by the pressure roller to deform the elastic arm, so that the squeezing gap can be adaptively changed as the PVC head enters.

[0017] The present invention is further configured such that: all pressure rollers are hollow metal tubes, and positioning holes are provided on the side walls of the pressure rollers; positioning protrusions that are adapted to the positioning holes are provided on the dewatering frame, and fixing pins are provided on the positioning protrusions; the fixing pins pass through the positioning protrusions and are connected to the pressure rollers or connecting parts, thereby fixing the pressure rollers and the dewatering frame relative to each other.

[0018] The advantages of this invention compared to the prior art are:

[0019] 1. In this invention, both the left and right pressure roller groups include integrally formed pressure rollers that penetrate the wringer frame and extend to both sides of the frame. Both ends of the pressure rollers pass over the ends of the plywood mop head. When the plywood mop head is wringing water, the squeezing device can fully contact the plywood mop head, allowing for uniform squeezing and improving the wringing effect. During wringing, the squeezing device can thoroughly clean the side surface of the plywood mop head, reducing debris residue and improving cleaning efficiency. The elastic part on the connector allows the width of the squeezing gap to change. The squeezing gap adapts to the plywood mop head during wringing, facilitating insertion and wringing, making it convenient for users. Furthermore, the elastic part increases the relative force between the pressure rollers and the plywood mop head during wringing, further enhancing the wringing effect.

[0020] 2. In this invention, since the length of the pressure roller is greater than the length of the cotton head; or, the total length of the cotton head and the connecting seat is greater than the length of the cotton head, the pressure roller and the connecting seat can squeeze the cotton head as a whole during the squeezing process, reducing the residual sewage at both ends of the cotton head during the squeezing process, which is beneficial to improving the squeezing effect of the cotton mop; the structure of the first and second pressure rollers can squeeze the cotton head multiple times, which is beneficial to fully squeezing the water out of the cotton head, and the connecting seat can improve the installation strength of the first and second pressure rollers, avoiding deformation and bending of the first and second pressure rollers due to excessive force during use, which is beneficial to fully squeezing the water out of the cotton head by the squeezing device, and also helps to extend the service life of the cotton mop head.

[0021] 3. In this invention, the first pressure roller, which is fixedly connected to the wringer, facilitates the stable installation of the left and right pressure roller groups. The rotatable second pressure roller reduces friction between the second pressure roller and the cotton head during the wringing process, allowing the cotton head to quickly enter between the left and right pressure roller groups for wringing, thus facilitating the user's wringing operation. Since the distance between the first pressure rollers on both sides of the cotton head is smaller than the distance between the second pressure rollers on both sides of the cotton head, this structure facilitates the cotton head entering between the left and right pressure roller groups during the wringing process, making it convenient for the user. Furthermore, this structure facilitates the gradual wringing of the cotton head, ensuring sufficient water extraction and improving the wringing effect of the cotton mop head.

[0022] 4. The elastic part in this invention allows the width of the extrusion gap to adapt to the entry of the plywood head. This structure can prevent excessive force on the extrusion device from damaging the connecting parts, thus extending the service life of the plywood mop head. Furthermore, this structure helps reduce the distance between the left and right pressure roller groups during production, facilitating sufficient extrusion of the plywood head by the extrusion device and improving the wringing effect of the plywood mop head. Since the elastic part can drive the plywood head to reset and allow it to pass through the space between the left and right pressure roller groups, it makes it convenient for users to use the plywood mop head.

[0023] 5. The abutment wall in this invention facilitates the support of the squeezing frame for the extrusion device, which is beneficial for the stable installation of the extrusion device. This structure also helps to reduce or even avoid bending of the pressure roller, which is beneficial for the pressure roller to fully squeeze the cotton head, thereby improving the squeezing effect of the cotton mop head. The elastic arm design facilitates increasing the displacement of the pressure roller during use. During production, the producer can reduce the distance between the elastic arms on both sides of the squeezing frame, which is beneficial for the extrusion device to effectively squeeze the cotton head. The structure of the elastic arm also facilitates the insertion of the cotton head into the extrusion gap, making it convenient for the user to perform the squeezing operation and preventing the plastic deformation of the squeezing frame after long-term use from affecting the service life of the cotton mop. The positioning hole and positioning protrusion facilitate the positioning and installation of the pressure roller, while the fixing pin structure is simple and facilitates the quick installation of the pressure roller and the production and assembly of the cotton mop head. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention;

[0025] Figure 2 This is an exploded view of Embodiment 1 of the present invention;

[0026] Figure 3 This is a partial cross-sectional view of Embodiment 1 of the present invention;

[0027] Figure 4 This is a cross-sectional view of the structure in which the pressure roller is mounted on the dewatering frame in this invention;

[0028] Figure 5 This is a schematic diagram of the water-squeezing frame in this invention;

[0029] Figure 6 This is a schematic diagram of the structure of the first pressure roller in this invention;

[0030] Figure 7 This is a schematic diagram of the connector structure in Embodiment 1 of the present invention;

[0031] Figure 8 This is a schematic diagram of the connecting seat in Embodiment 1 of the present invention;

[0032] Figure 9 This is a partial structural diagram of the cotton head in this invention;

[0033] Figure 10 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0034] Figure 11 This is one of the structural schematic diagrams of the connector in Embodiment 2 of the present invention;

[0035] Figure 12 This is the second schematic diagram of the connecting member in Embodiment 2 of the present invention.

[0036] The labels in the diagram mean: 1-mop handle; 11-slide groove; 2-squeeze frame; 21-avoid groove; 22-butt wall; 23-elastic arm; 24-positioning protrusion; 25-positioning wall; 3-left pressure roller group; 4-right pressure roller group;

[0037] 31-First pressure roller; 32-Second pressure roller; 33-Positioning hole; 34-Cavity; 35-Fixing groove; 36-Extrusion gap; 5-Connector; 51-Connecting part; 52-Elastic part; 53-Connecting plate; 6-Connecting seat; 61-End cap;

[0038] 62-Plug-in part; 63-Pin hole; 64-Fixing block; 7-Traction device; 71-Handle; 72-Transmission link; 73-Slider; 8-Fixing pin; 9-Glue head; 91-Traction part. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0040] See Figures 1 to 12 As shown, a sponge mop head includes a sponge head 9 and a wringer 2. The wringer 2 is equipped with a squeezing device, which is located on both sides of the sponge head 9. During use, the sponge head 9 can move relative to the squeezing device, and the squeezing device squeezes water from the sponge head 9. The squeezing device includes a left pressure roller group 3 and a right pressure roller group 4, respectively located on both sides of the sponge head 9. A squeezing gap 36 is formed between the left pressure roller group 3 and the right pressure roller group 4 for squeezing the sponge head 9. Both the left pressure roller group 3 and the right pressure roller group 4 include at least two integrally formed pressure rollers, which are arranged vertically in sequence and extend through the wringer 2 to both sides of the wringer 2. When the sponge mop head is squeezing water, the squeezing device can fully contact the sponge head 9, thereby allowing the squeezing device to uniformly squeeze the sponge head 9, which is beneficial to improving the water-squeezing effect of the sponge mop head. During the water-squeezing process, the squeezing device can thoroughly clean the side surface of the sponge head 9, reducing the residue of debris on the side of the sponge head 9, which is beneficial to improving the cleaning effect of the sponge head 9.

[0041] Both ends of the pressure roller are provided with connectors 5, which connect the left pressure roller group 3 and the right pressure roller group 4. The connectors 5 are provided with elastic parts 52. During the squeezing process of the plywood mop head, the elastic parts 52 can pull the left pressure roller group 3 and the right pressure roller group 4 to press against both sides of the plywood head 9, so that the pressure rollers can fully squeeze the plywood head 9. The elastic parts 52 on the connectors 5 can change the width of the squeezing gap 36. During the squeezing process of the plywood mop, the squeezing gap 36 can be adapted to the entry of the plywood head 9, making it easier for the plywood head 9 to enter the squeezing gap 36 for squeezing. This makes it convenient for users to use the plywood mop for squeezing. In addition, the elastic parts 52 can also increase the relative force between the pressure roller and the plywood head 9 during the squeezing process, which is beneficial to improving the squeezing effect of the plywood mop head.

[0042] The adaptive change refers to the fact that when the cotton head 9 enters the squeezing gap 36, the force on the left pressure roller group 3 and the right pressure roller group 4 will increase, and at this time the left pressure roller group 3 and the right pressure roller group 4 will be displaced, thereby increasing the width of the squeezing gap 36; when the squeezing is completed, the cotton head 9 will pass out from the squeezing gap 36, and the left pressure roller group 3 and the right pressure roller group 4 will return to their original positions, thereby decreasing the width of the squeezing gap 36.

[0043] During the wringing process of the plywood mop head, if the relative force between the plywood head 9 and the pressure roller is too large, the pressure roller will deform or displace. In this structure, the middle part of the upper pressure rollers of the left pressure roller group 3 and the right pressure roller group 4 is connected to the wringing frame 2, and the two ends of the upper pressure rollers of the left pressure roller group 3 and the right pressure roller group 4 are respectively connected to the connecting piece 5. In this structure, the pressure rollers are distributed with force, which can avoid deformation and bending of the pressure rollers and reduce the displacement of the pressure rollers, thereby increasing the relative force between the pressure rollers and the plywood head 9 during the wringing process, which is beneficial to improving the wringing effect of the plywood mop head.

[0044] The length of the pressure roller is greater than the length of the cotton head 9; or, the total length of the pressure roller and the connecting seat 6 is greater than the length of the cotton head 9, so that the pressure roller and the connecting seat 6 can squeeze the cotton head 9 as a whole in the length direction. During the squeezing process, the pressure roller and the connecting seat 6 can squeeze the cotton head 9 as a whole, reducing the sewage residue at both ends of the cotton head 9 during the squeezing process, which is beneficial to improving the squeezing effect of the cotton mop.

[0045] In this invention, when the length of the pressure roller is greater than the length of the PVC head 9, both ends of the pressure roller extend beyond both ends of the PVC head 9, and the entire PVC head 9 is located on one side of the pressure roller. This structure helps to avoid friction between the connecting seat 6 and the PVC head 9, making it easier for the user to control the squeezing of the PVC mop and facilitating user use. When the length of the pressure roller is less than the PVC head 9, and the total length of the pressure roller and the connecting seat 6 is greater than the length of the PVC head 9, the connecting seat 6 can be used to assist in squeezing the PVC head 9. Although this structure will cause friction between the connecting seat 6 and the PVC head 9, it will reduce the length of the pressure roller, thereby reducing production costs.

[0046] Both the left pressure roller group 3 and the right pressure roller group 4 include a vertically distributed first pressure roller 31 and a second pressure roller 32. The first pressure roller 31 is detachably connected to the wringer 2, and a connecting seat 6 is provided on the first pressure roller 31. The second pressure roller 32 is installed on the wringer 2 through the connecting seat 6 and the first pressure roller 31. During the wringing process of the plywood mop, the two sides of the plywood head 9 are respectively pressed against the left pressure roller group 3 and the right pressure roller group 4. The second pressure roller 32 can move relative to the wringer 2 through the connecting seat 6 and the first pressure roller 31, so that the squeezing gap 36 can be adaptively changed as the plywood head 9 enters. The structure of the first pressure roller 31 and the second pressure roller 32 can squeeze the plywood head 9 multiple times, which is conducive to the full squeezing of water from the plywood head 9. The connecting seat 6 can improve the installation strength of the first pressure roller 31 and the second pressure roller 32, and prevent the first pressure roller 31 and the second pressure roller 32 from deforming and bending due to excessive force during use. This is conducive to the squeezing device fully squeezing water from the plywood head 9 and to extending the service life of the plywood mop head.

[0047] In this invention, both the first pressure roller 31 and the second pressure roller 32 are hollow metal tubes with cavities 34 inside. Both ends of the first pressure roller 31 are provided with connecting seats 6, and the connecting seats 6 are provided with two sets of insertion parts 62. The insertion parts 62 are respectively inserted into the cavities 34 in the first pressure roller 31 and the second pressure roller 32. The hollow tube structure is lightweight, making it convenient for users to use the plywood mop head. This structure also helps to increase the diameter of the pressure roller, thereby increasing the contact surface between the squeezing device and the plywood head 9 during the squeezing process, which facilitates the pressure roller to fully squeeze the plywood head 9. The insertion part 62 has a simple structure, which facilitates the installation and disassembly of the connecting seat 6 with the first pressure roller 31 or the second pressure roller 32, and facilitates the assembly and production of the plywood mop head.

[0048] Since the hollow metal tube contains no other structures, to facilitate the fixed connection between the pressure roller and the dewatering frame, it is preferable that the pressure roller is provided with a positioning hole 33, and the dewatering frame 2 is provided with a positioning protrusion 24 that matches the positioning hole 33. A fixing pin 8 is provided on the positioning protrusion 24, which passes through the positioning protrusion 24 and connects to the pressure roller or the connecting piece 5, thereby fixing the pressure roller and the dewatering frame 2 relative to each other. The positioning hole 33 and the positioning protrusion 24 facilitate the positioning and installation of the pressure roller, while the fixing pin 8 has a simple structure and facilitates the quick installation of the pressure roller. For quick installation and convenient production and assembly of the plywood mop head, it is preferable that the positioning hole 33 and the positioning protrusion 24 both have trapezoidal cross sections. The size of the positioning hole 33 increases with the increase of the distance from the center of the extrusion device. This structural component facilitates the positioning and installation of the pressure roller and the wringer 2, and also facilitates the quick disassembly and installation of the extrusion device and the wringer 2, which is convenient for the assembly and production of the plywood mop head. Preferably, the wringer 2 is provided with a positioning wall 25. When the fixing pin 8 is connected to the pressure roller or the connecting piece 5, the pressure roller can be pressed against the positioning wall 25.

[0049] In this invention, the positioning hole 33 is provided on the side wall of the first pressure roller 31, and both ends of the first pressure roller 31 are provided with fixing grooves 35. The connecting seat 6 is provided with a fixing block 64 that is adapted to the fixing groove 35. The fixing block 64 and the fixing groove 35 cooperate to prevent the relative rotation of the first pressure roller 31 and the squeezing frame 2. The second pressure roller 32 is a hollow round tube, and the pin part is rotatably connected to the cavity 34 of the second pressure roller 32.

[0050] The present invention describes a wringer frame 2 equipped with a mop handle 1. The mop handle 1 is equipped with a traction device 7 for driving the movement of the sponge head 9. The traction device 7 includes a handle 71 rotatably mounted on the mop handle 1, and a transmission link 72 rotatably mounted on the handle 71. The transmission link 72 can be directly connected to the sponge head 9 and drive its movement. Preferably, the mop handle 1 has a groove 11. The traction device 7 includes a slider 73 slidably mounted in the groove 11. The sponge head 9 has a traction part 91. The slider 73 is detachably connected to the traction part 91. The transmission link 72 is rotatably connected to the slider 73. The traction device 7 is a common technology in the industry, and any structure capable of pulling the sponge head 9 can be used. In addition to the scheme shown in the attached diagram, the traction device 7 structure in existing technologies such as Chinese Invention Patent CN 202320267958.1 and Chinese Invention Patent CN 201621290024.6 can also be used.

[0051] In this invention, both the first pressure roller 31 and the second pressure roller 32 are provided with cavities 34 that are adapted to the insertion part 62. The connecting seat 6 is provided with an end cap 61. When the connecting seat 6 and the cavity 34 are engaged, the end cap 61 seals the cavity 34. The positioning hole 33 is provided on the side wall of the cavity 34. The insertion part 62 is provided with a pin hole 63. The tight fit between the fixing pin 8 and the pin hole 63 can not only prevent the positioning protrusion 24 from disengaging from the positioning hole 33, but also facilitate the stable engagement between the connecting seat 6 and the cavity 34.

[0052] The first pressure roller 31 is disposed on the upper side of the second pressure roller 32, and the first pressure roller 31 is fixedly connected to the water squeezing frame 2. The second pressure roller 32 is rotatably connected to the connecting seat 6. During the squeezing process of the pressure roller on the cotton head 9, the cotton head 9 can drive the second pressure roller 32 to rotate, thereby reducing the friction between the second pressure roller 32 and the cotton head 9. The first pressure roller 31, which is fixedly connected to the water squeezing frame 2, facilitates the stable installation of the left pressure roller group 3 and the right pressure roller group 4. The rotatable arrangement of the first pressure roller 31 on the second pressure roller 32 helps to reduce the friction between the second pressure roller 32 and the cotton head 9 during the water squeezing process, and facilitates the quick entry of the cotton head 9 between the left pressure roller group 3 and the right pressure roller group 4 for water squeezing, making it convenient for the user to perform the water squeezing operation.

[0053] Preferably, the distance between the first pressure rollers 31 on both sides of the PVC mop head 9 is less than the distance between the second pressure rollers 32 on both sides of the PVC mop head 9. This structure facilitates the PVC mop head 9 to enter between the left pressure roller group 3 and the right pressure roller group 4 during the water squeezing process, making it convenient for users. In addition, this structure also facilitates the gradual squeezing of water from the PVC mop head 9, which facilitates the full squeezing out of water from the PVC mop head 9 and improves the water squeezing effect of the PVC mop head.

[0054] The connector 5 includes a connecting portion 51 that connects to the left pressure roller group 3 and the right pressure roller group 4 respectively. An elastic portion 52 is provided between the connecting portions 51. The elastic portion 52 allows the width of the extrusion gap 36 to adapt to the entry of the cotton mop head 9. The connecting portion 51 facilitates the connection and disassembly of the connecting frame with the left pressure roller group 3 and the right pressure roller group 4. The elastic portion 52 increases the distance between the extrusion devices on both sides of the cotton mop head 9. This structure can prevent the connector 5 from being damaged due to excessive force on the extrusion device, which helps to extend the service life of the cotton mop head. Furthermore, this structure helps to reduce the distance between the left pressure roller group 3 and the right pressure roller group 4 during production, which facilitates the extrusion device to fully extrude the cotton mop head 9 and improves the water-squeezing effect of the cotton mop head.

[0055] In this invention, the connector 5 and the connector 6 can be set independently, or they can be set as a single unit. Specifically, there are two embodiments:

[0056] Example 1

[0057] The connector 5 is provided with two sleeve-shaped connecting parts 51, which are respectively sleeved on the pressure rollers in the left pressure roller group 3 and the right pressure roller group 4.

[0058] In this embodiment, the elastic part 52 is preferably made of elastic material. The elastic part 52 can be bent and can stretch and extend in the length direction. During the squeezing process of the squeezing device on the cotton head 9, the cotton head 9 can drive the elastic part 52 to bend and deform. The elastic part 52 can drive the cotton head 9 to reset and make the cotton head 9 pass through the left pressure roller group 3 and the right pressure roller group 4. This structure facilitates the automatic reset of the cotton head 9 during the squeezing process and makes it convenient for users to use the cotton mop head.

[0059] Example 2

[0060] The connector 5 includes two sets of connecting seats 6, and a connecting plate 53 is provided between the two sets of connecting seats 6. The connecting plate 53 is telescopic and deformable. The connecting seat 6 is located at the end of the pressure roller. During the squeezing process, the cotton head 9 will not come into contact with the cotton head 9, reducing the friction between the cotton head 9 and the connector 5 and making it convenient for the user to use the cotton head 9.

[0061] The water-squeezing frame 2 described in this invention is provided with a clearance groove 21. During the water-squeezing process, the cotton mop head 9 can move in the clearance groove 21, and both sides of the clearance groove 21 are provided with abutting walls 22. The abutting walls 22 can abut against the pressure roller and drive the pressure roller to press against the side of the cotton mop head 9. The setting of the abutting walls 22 facilitates the support of the squeezing device by the water-squeezing frame 2, which is conducive to the stable installation of the squeezing device. Moreover, this structure helps to reduce or even avoid the bending of the pressure roller, which is conducive to the pressure roller fully squeezing the cotton mop head 9, thereby improving the water-squeezing effect of the cotton mop head.

[0062] The lower end of the wringer 2 extends to form an elastic arm 23, and the abutment wall 22 is set on the elastic arm 23, or the abutment wall 22 extends to the elastic arm 23, so that the elastic arm 23 can abut against the side wall of the pressure roller. During the wringing process of the plywood mop, the plywood head 9 can be driven by the pressure roller to deform the elastic arm 23, so that the squeezing gap 36 can be adaptively changed as the plywood head 9 enters. The setting of the elastic arm 23 facilitates the increase of the displacement of the pressure roller during use. During the production process, the producer can reduce the distance between the elastic arms 23 on both sides of the wringer 2, which is conducive to the effective squeezing of the plywood head 9 by the squeezing device. Moreover, the structure of the elastic arm 23 makes it easy for the plywood head 9 to enter the squeezing gap 36, which is convenient for the user to perform the wringing operation and avoids the plastic deformation of the wringer 2 after long-term use, which affects the service life of the plywood mop.

[0063] At least two elastic arms 23 are provided on both sides of the cotton head 9. The elastic arms 23 are spaced apart. The extrusion device can abut against the pressing wall 22 on the elastic arm 23 respectively. In this invention, the elastic arms 23 are located on the side of the second pressure roller 32. This structure is beneficial to increase the maximum distance between the second pressure rollers 32 on both sides of the cotton head 9, making it easier for the cotton head 9 to pass between the second pressure rollers 32 on both sides of the cotton head 9. Moreover, since the elastic arms 23 are not located on the side of the first pressure roller 31, it is beneficial for the first pressure roller 31 to fully extrude the cotton head 9.

[0064] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A sponge mop head, comprising a sponge head (9) and a wringer (2), wherein the wringer (2) is provided with a squeezing device, which is respectively disposed on both sides of the sponge head (9). During use, the sponge head (9) can move relative to the squeezing device, and the squeezing device squeezes water out of the sponge head (9), characterized in that: The extrusion device includes a left pressure roller group (3) and a right pressure roller group (4) respectively arranged on both sides of the cotton head (9). An extrusion gap (36) for extruding the cotton head (9) is formed between the left pressure roller group (3) and the right pressure roller group (4). The left pressure roller group (3) and the right pressure roller group (4) each include at least two integrally arranged pressure rollers. The pressure rollers are arranged vertically in sequence, and the pressure rollers pass through the dewatering frame (2) and extend to both sides of the dewatering frame (2). Both ends of the pressure roller are provided with connectors (5), which connect the left pressure roller group (3) and the right pressure roller group (4). The connectors (5) are provided with elastic parts (52). During the squeezing process of the PVC mop head, the elastic parts (52) can pull the left pressure roller group (3) and the right pressure roller group (4) to press against both sides of the PVC mop head (9) respectively, and make the squeezing gap (36) adapt to the entry of the PVC mop head (9).

2. The sponge mop head according to claim 1, characterized in that: The length of the pressure roller is greater than the length of the cotton head (9); or, the total length of the pressure roller and the connecting seat (6) is greater than the length of the cotton head (9).

3. A sponge mop head according to claim 1 or 2, characterized in that: The left pressure roller group (3) and the right pressure roller group (4) each include a first pressure roller (31) and a second pressure roller (32) distributed vertically. The first pressure roller (31) is detachably connected to the dewatering frame (2). A connecting seat (6) is provided on the first pressure roller (31). The second pressure roller (32) is installed on the dewatering frame (2) through the connecting seat (6) and the first pressure roller (31). During the dewatering process of the PVC-coated mop, the two sides of the PVC-coated head (9) are pressed against the left pressure roller group (3) and the right pressure roller group (4) respectively. The second pressure roller (32) can move relative to the dewatering frame (2) through the connecting seat (6) and the first pressure roller (31), so that the squeezing gap (36) can be adaptively changed as the PVC-coated head (9) enters.

4. The sponge mop head according to claim 3, characterized in that: The first pressure roller (31) is located on the upper side of the second pressure roller (32), and the first pressure roller (31) is fixedly connected to the water squeezing frame (2). The second pressure roller (32) is rotatably connected to the connecting seat (6). During the process of the pressure roller squeezing the cotton head (9), the cotton head (9) can drive the second pressure roller (32) to rotate, thereby reducing the friction between the second pressure roller (32) and the cotton head (9).

5. A sponge mop head according to claim 4, characterized in that: The distance between the first pressure rollers (31) on both sides of the cotton head (9) is less than the distance between the second pressure rollers (32) on both sides of the cotton head (9).

6. A sponge mop head according to claim 1, 2, 4, or 5, characterized in that: The connector (5) includes a connecting part (51) that is connected to the left pressure roller group (3) and the right pressure roller group (4) respectively, and an elastic part (52) is provided between the connecting parts (51); during the wringing process of the PVC mop, the elastic part (52) can deform, thereby increasing the distance between the left pressure roller group (3) and the right pressure roller group (4).

7. A sponge mop head according to claim 6, characterized in that: The elastic part (52) is made of elastic material and can be bent and stretch in the length direction. During the extrusion process of the extrusion device extruding the cotton head (9), the cotton head (9) can drive the elastic part (52) to bend and deform, the elastic part (52) can drive the cotton head (9) to reset, and the cotton head (9) can pass through between the left pressure roller group (3) and the right pressure roller group (4).

8. A sponge mop head according to claim 1, 2, 4, 5, or 7, characterized in that: The dewatering frame (2) is provided with a clearance groove (21). During the dewatering process of the cotton head (9), the cotton head (9) can move in the clearance groove (21), and there are pressing walls (22) on both sides of the clearance groove (21). The pressing walls (22) can abut against the pressure roller and drive the pressure roller to press against the side of the cotton head (9).

9. A sponge mop head according to claim 8, characterized in that: The lower end of the wringer (2) extends to form an elastic arm (23), and the abutting wall (22) is set on the elastic arm (23); or, the abutting wall (22) extends to the elastic arm (23), so that the elastic arm (23) can abut against the side wall of the pressure roller; during the wringing process of the PVC mop, the PVC head (9) can be driven by the pressure roller to deform the elastic arm (23), so that the squeezing gap (36) can be adaptively changed as the PVC head (9) enters.

10. A sponge mop head according to claim 1, 2, 3, 5, 7, or 9, characterized in that: All pressure rollers are hollow metal tubes. Positioning holes (33) are provided on the side walls of the pressure rollers. Positioning protrusions (24) that are adapted to the positioning holes (33) are provided on the dewatering frame (2). Fixing pins (8) are provided on the positioning protrusions (24). The fixing pins (8) pass through the positioning protrusions (24) and are connected to the pressure rollers or connecting parts (5), so that the pressure rollers and the dewatering frame (2) are relatively fixed.

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