CN217186004U

CN217186004U - Water leakage prevention cleaning roller and cleaning tool

Info

Publication number: CN217186004U
Application number: CN202220506874.4U
Authority: CN
Inventors: 周杰; 万科学
Original assignee: Dishe Intelligent Technology Wuhan Co Ltd
Current assignee: Dishe Intelligent Technology Wuhan Co Ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-08-16
Anticipated expiration: 2032-03-08

Abstract

The utility model is suitable for a cleaning device technical field discloses a cylinder and burnisher are used in cleaning of leak protection water, and wherein this cylinder is used in cleaning of leak protection water includes cylinder support and cladding in the cylinder sponge in the cylinder support outside, and this cylinder support one end is equipped with the cavity, and the other end is equipped with flexible pivot mechanism cylinder sponge both ends are equipped with the lock water mechanism that prevents liquid outflow when the cylinder washs respectively. Because the two ends of the roller sponge are respectively provided with the water locking mechanisms which can avoid the water leakage phenomenon on the side surfaces of the roller, the water locking mechanisms can reduce the friction force between the water locking mechanisms and the cleaning head shell, and can improve the water tightness between the roller sponge and the cleaning head shell. Meanwhile, the service life of the cleaning roller can be shortened due to the fact that large friction force exists, the effective performance of the battery is improved, and the overall water absorption and moisture retention performance of the sponge of the roller can be prevented from being reduced. In addition, the water locking mechanism reduces the elastic deformation between the end part of the sponge layer and the side wall of the cleaning head shell, and the generated expansion force on the side wall of the cleaning head shell is naturally reduced in the process of drying and hardening of the sponge layer, so that the service life of the cleaning head shell is prolonged.

Description

Water leakage prevention cleaning roller and cleaning tool

Technical Field

The utility model relates to a cleaning equipment technical field especially relates to a clean cylinder and burnisher of leak protection water.

Background

To clean the cleaning cylinder, a closed cleaning space is usually provided in communication with a water supply to clean the partial cylinder, clean water is supplied to clean the cleaning cylinder, and then the contaminated water from the cleaned cleaning cylinder is pumped away. Meanwhile, the cleaning roller can cover the possible area to be cleaned as far as possible, and the two end parts of the sponge layer of the cleaning roller in the width direction of the cleaning head are in elastic interference fit with the side wall of the cleaning head shell, so that the part of the cleaning roller, which is sealed in the cleaning space, cannot leak water when being washed by high-speed water flow.

Among the prior art wash the cylinder all be one end cup joint fix on the motor of cleaning head one end lateral wall, the other end passes through the elastic button joint on cleaning head other end lateral wall, in order to prevent that the high-speed operation of cleaning cylinder from outwards getting rid of out water, the sponge layer has great compression capacity with the both sides wall, produces great resistance in the high-speed operation, has lost motor operating efficiency, or leads to the whole time of endurance of ground cleaner battery to reduce, user experience is not good. Meanwhile, when the compression amount of the sponge layer and the two side walls is small, the water leakage phenomenon is easy to occur between the sponge layer and the side walls, so that a scheme that the sponge layer of the cleaning roller can lock water and the friction between the sponge layer and the side walls of the cleaning head can be reduced is necessarily found.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a leak protection water for cleaning cylinder and burnisher, and wherein this leak protection water for cleaning cylinder can avoid the cylinder side phenomenon of leaking to appear, can reduce cylinder frictional force again.

In order to solve the problem, the utility model provides a cylinder is used in cleaning of leak protection water, this cylinder is used in cleaning of leak protection water includes cylinder support and the cylinder sponge of cladding in the cylinder support outside, and this cylinder support one end is equipped with the cavity, and the other end is equipped with flexible pivot mechanism cylinder sponge both ends are equipped with the lock water mechanism that prevents liquid outflow when the cylinder washs respectively.

Preferably, the water locking mechanism comprises an inclined plane which is inclined inwards at any position between the outer diameter and the inner diameter of the roller sponge in the thickness direction of the roller sponge, and an annular arc surface is formed in the thickness of the roller sponge.

Preferably, the annular arc surface of the roller sponge is provided with a water locking layer with density higher than that of the roller sponge.

Preferably, the surface of the water-locking layer is smooth.

Preferably, the telescopic rotating shaft mechanism comprises a rotating shaft, an elastic component and a rotating shaft cover, wherein one end of the rotating shaft is fixed on the fixing seat and only moves linearly, the elastic component is sleeved on the rotating shaft to enable the rotating shaft to be in an extending state, the rotating shaft cover is covered at the end part of the rotating shaft, a bearing is arranged between the rotating shaft cover and the rotating shaft, the rotating shaft linearly moves inwards when force is applied to the rotating shaft cover, and the elastic component enables the rotating shaft and the rotating shaft cover to extend outwards when the rotating shaft cover is loosened.

Preferably, the water locking mechanism comprises water retaining rings which are arranged at two ends of the roller sponge and protrude out of the roller sponge body.

Preferably, the outer side of the water retaining ring is flush with the outer diameter of the roller sponge.

Preferably, the inner side of the water retaining ring is an inclined plane.

Preferably, the outer side of the water retaining ring is provided with directional deformation grooves, and the directional deformation grooves are distributed in the circumferential direction of the water retaining ring.

Preferably, the cross section of the directional deformation groove is trapezoidal.

Preferably, the inner side and the outer side of the water retaining ring are inclined planes inclined outwards.

Preferably, the water locking mechanism comprises water retaining rings which are respectively arranged at two ends of the roller sponge and provided with a plurality of tooth-shaped sections from inside to outside.

Preferably, the water retaining ring inclines towards the radial outer side of the roller sponge, and a water collecting groove with the position lower than the leakage-proof joint surface is formed at the joint of the water retaining ring and the roller sponge.

The utility model also provides a cleaning tool, this cleaning tool include the cleaning head, and this cleaning head includes the casing and locates the cylinder of casing to and the driving motor of driving roll work, the cylinder includes cylinder support and cladding in the cylinder sponge in the cylinder support outside, and this cylinder support one end is equipped with the cavity, and the other end is equipped with flexible pivot mechanism cylinder sponge both ends are equipped with the lock water mechanism that liquid flowed out when preventing the cylinder washing respectively.

Preferably, the surface of the water-locking layer is smooth.

Preferably, the water locking mechanism comprises water retaining rings protruding out of the roller sponge body and arranged at two ends of the roller sponge.

Preferably, the inner side of the water retaining ring is an inclined plane.

The utility model discloses cylinder and burnisher are used in cleaning of leak protection water, wherein this cylinder is used in cleaning of leak protection water includes cylinder support and the cylinder sponge of cladding in the cylinder support outside, and this cylinder support one end is equipped with the cavity, and the other end is equipped with flexible pivot mechanism cylinder sponge both ends are equipped with the lock water mechanism that prevents liquid outflow when the cylinder washs respectively. Because the two ends of the roller sponge are respectively provided with the water locking mechanisms which can avoid the water leakage phenomenon on the side surfaces of the roller, the water locking mechanisms can reduce the friction force between the water locking mechanisms and the cleaning head shell, and can improve the water tightness between the roller sponge and the cleaning head shell. Meanwhile, the service life of the cleaning roller can be shortened due to the existence of larger friction force, the effective performance of the battery is improved, and the overall water absorption and moisture retention performance of the sponge of the roller can be prevented from being reduced.

In addition, the water locking mechanism reduces the elastic deformation between the end part of the sponge layer and the side wall of the cleaning head shell, and the generated expansion force on the side wall of the cleaning head shell is naturally reduced in the process of drying and hardening of the sponge layer, so that the service life of the cleaning head shell is prolonged.

The water locking mechanism comprises an inclined plane which is arranged at any position between the outer diameter and the inner diameter in the thickness direction of the roller sponge, the inclined plane inclines inwards, an annular arc surface is formed in the thickness direction of the roller sponge, a water locking layer with the density larger than that of the roller sponge is arranged on the annular arc surface, and the surface of the water locking layer is smooth. Because the surface of the water locking layer is flat, the friction between the water locking layer and the shell is small after the water locking layer is installed, meanwhile, the contact surface between the water locking layer and the shell is increased, the length of a watertight path is effectively increased, and therefore the cleaned liquid can be effectively prevented from leaking.

The water locking mechanism comprises water retaining rings protruding out of the roller sponge body arranged at two ends of the roller sponge body, and the water retaining rings are smaller and expand outwards when in use, so that the contact surface between the water retaining rings and the shell is increased in a limited manner, and the contact friction force between the water retaining rings and the shell is not increased obviously through proper arrangement. When outwards expanding simultaneously, be higher than the cylinder sponge surface with the contact surface position between cylinder sponge and the casing, the washing liquid can't flow to higher cylinder sponge tip during the washing to also can effectively reduce liquid and spill. The inner side of the water retaining ring is a guide for the inclined plane to more easily expand the water retaining ring towards the outer side when the inclined plane is matched with the shell.

The outside of manger plate ring is equipped with directional deformation groove, and this directional deformation groove distributes in manger plate ring circumferencial direction, can ensure more manger plate ring when cooperating with the casing through directional deformation groove and predetermine the direction expansion, guide to the outside expansion promptly. The section of the directional deformation groove is in a trapezoidal shape so as to better realize outward expansion guiding.

According to the needs, the inside and outside of breakwater ring are the inclined plane that outwards inclines, and its purpose is also that it can outwards expand when guaranteeing with the casing cooperation and guide, ensures that the lock water purpose realizes.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without exceeding the protection scope of the present application.

Fig. 1 is a front view of a three-dimensional structure of an embodiment of a roller for preventing water leakage in a cleaning apparatus.

Fig. 2 is a schematic sectional view along a-a direction in fig. 1.

Fig. 3 is an enlarged schematic view of part C of fig. 2.

Fig. 4 is a schematic structural view of another embodiment of the anti-leakage cleaning roller of the present invention.

Fig. 5 is an enlarged schematic view of a part D of fig. 4.

FIG. 6 is a schematic view of the water retaining ring in an axial orthographic projection.

FIG. 7 is a schematic structural view of another embodiment of the water retaining ring.

FIG. 8 is a schematic structural view of another embodiment of the water retaining ring.

FIG. 9 is a schematic structural view of a water retaining ring according to a fourth embodiment.

Fig. 10 is an enlarged view of part E of fig. 9.

FIG. 11 is a schematic view of an embodiment of a cleaning tool.

Fig. 12 is a schematic structural view of the water locking mechanism engaged with the housing.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The following claims are presented in conjunction with the detailed description of the invention and the accompanying drawings, it being understood that the embodiments described are only some embodiments of the invention and not all embodiments. Based on the embodiments of the present invention, those skilled in the art can find out all other embodiments obtained without making creative efforts, which also belong to the protection scope of the present invention.

It should be understood that in the embodiments of the present invention, all directional terms, such as "upper", "lower", "left", "right", "front", "back", etc., are used herein based on the orientation and position shown in the drawings or the orientation and position of the product, and are not intended to limit the present invention, but to simplify the description of the present invention. For the purpose of explaining only the relative positional relationship between the respective components, the movement, and the like, as shown in the drawings, when the specific posture is changed, the directional indication may be changed accordingly.

Furthermore, the use of ordinal numbers such as "first", "second", etc., in the present application is for distinguishing purposes only and is not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. The features defining "first" and "second" may be explicit or implicit in at least one of the features. In the description of the present invention, "a plurality" means at least two, i.e., two or more, unless expressly defined otherwise; the meaning of "at least one" is one or both.

In the present invention, unless explicitly specified or limited otherwise, the terms "mounting," "setting," "connecting," "fixing," "screwing" and the like are to be understood in a broad sense, and for example, the positional relationship between the components may be relatively fixed, or the components may be physically fixed and connected, or may be detachably connected, or may be integrated into a single structure; the connection can be mechanical connection or electrical signal connection; either directly or indirectly through intervening media or components; the two elements may be connected to each other or may be in an interaction relationship with each other, and unless otherwise explicitly limited by the specification, the specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations, except that the corresponding function or effect cannot be achieved in other understanding.

The present invention relates to a control technique or unit that is conventional for those skilled in the art, such as a controller and a control circuit, and the control circuit of the controller can be implemented by those skilled in the art using existing techniques, such as simple programming. Software or programs related to the implementation of the control result in cooperation with hardware, such as software or program control procedures related to the implementation of the control result, which are not described in detail in the specification, belong to the technical field of the prior art or the routine of a person with ordinary skill in the art. The power also adopts belong to this field of prior art, and the utility model discloses main utility model technical point lies in improving mechanical device, so the utility model discloses no longer explain in detail concrete circuit control relation and circuit connection.

The present disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described in the present invention. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Fig. 1 to 10 show an embodiment of a water leakage preventing cleaning roller according to the present invention.

The anti-water leakage cleaning roller 1 comprises a roller bracket 11 and a roller sponge 12 coated outside the roller bracket 11, wherein one end of the roller bracket 12 is provided with a cavity (not shown in the attached drawing), the other end of the roller bracket 12 is provided with a telescopic rotating shaft mechanism, and two ends of the roller sponge 12 are respectively provided with a water locking mechanism for preventing liquid from flowing out when the roller is cleaned.

Specifically, the telescopic rotating shaft mechanism comprises a rotating shaft 15, one end of which is fixed on the fixed seat 16 and only moves linearly, an elastic component 14 which is sleeved on the rotating shaft 15 and enables the rotating shaft to be in an extending state, and a rotating shaft cover 13 which covers the end part of the rotating shaft 15, wherein a bearing is arranged between the rotating shaft cover and the rotating shaft, the rotating shaft linearly moves inwards when force is applied to the rotating shaft cover, and the elastic component enables the rotating shaft and the rotating shaft cover to extend outwards when the force is released. The shaft cover 13 is polygonal, such as square, hexagonal or other structures capable of transmitting rotation torque. The water locking mechanism comprises an inclined surface 121 which is inclined inwards and is arranged at any position between the outer diameter and the inner diameter of the roller sponge 12 in the thickness direction, and an annular arc surface is formed in the thickness of the roller sponge 12. The annular arc surface of the roller sponge is provided with a water locking layer 120 with density larger than that of the roller sponge. The water-locking layer 120 has a smooth surface. Because the surface of the water locking layer is flat, the friction between the water locking layer and the shell is small after the water locking layer is installed, meanwhile, the contact surface between the water locking layer and the shell is increased, the length of a watertight path is effectively increased, and therefore the cleaned liquid can be effectively prevented from leaking.

The water locking mechanism can also adopt a structure that the two ends of the roller sponge 12 are provided with water retaining rings 10 protruding out of the roller sponge body, and because the water retaining rings 10 are smaller, the water retaining rings 10 expand outwards when in use, so that the contact surface between the water retaining rings and the shell is increased in a limited way, and the contact friction force between the water retaining rings and the shell can not be obviously increased through proper arrangement. When outwards expanding simultaneously, be higher than cylinder sponge 12 surfaces with the contact surface position between cylinder sponge and the casing, the washing liquid can't flow to higher cylinder sponge tip during the washing to also can effectively reduce liquid and spill. The inner side of the water retaining ring is a guide for the inclined plane to more easily expand the water retaining ring to the outer side when being matched with the shell A.

The outer side of the water retaining ring 10 is provided with directional deformation grooves 102, the directional deformation grooves 102 are distributed in the circumferential direction of the water retaining ring, and the water retaining ring can be expanded towards the preset direction when being matched with a shell through the directional deformation grooves, namely, the water retaining ring is expanded towards the outer side for guiding. The section of the directional deformation groove is in a trapezoidal shape so as to better realize outward expansion guiding.

The inner side and the outer side of the water retaining ring 10 are inclined planes 101 inclined outwards as required, and the purpose of the inclined planes is to ensure that the inclined planes can expand outwards to guide when being matched with a shell, so that the purpose of locking water is achieved.

As shown in fig. 9-10, the water locking mechanism can also be implemented by adopting a structure that the water locking mechanism includes a plurality of water retaining rings 10 respectively disposed at two ends of the roller sponge 12 from inside to outside, and the plurality of water retaining rings 10 are located between the radial inner diameter and the radial outer diameter of the roller sponge 12, and may not include the inner diameter and the outer diameter. The sections of the water retaining rings 10 are in a tooth-shaped structure. The plurality of water-guard rings 10 are optimally arranged to be inclined radially outward of the roller sponge 12. Because the water retaining rings 10 are arranged and the water retaining rings 10 incline outwards, after installation, the water retaining rings 10 can form a limited large contact surface with the shell, and a water collecting tank 103 with a position lower than a leakage-proof joint surface is formed at the joint of the bottoms of the water retaining rings 10 and the roller sponge 12, so that a better leakage-proof effect is achieved. The leakproof interface is the contact surface formed by the contact between the water retaining ring 10 and the shell.

And simultaneously, a plurality of water retaining rings which can elastically deform are arranged to jointly act, so that multiple water locking can be realized for two ends of the roller sponge and the side wall of the cleaning head shell. Even if a certain water retaining ring is damaged, the water locking function of the two ends of the roller sponge can still be realized as long as one water retaining ring is complete. Even if there are many places water retaining ring to have local damage or whole water retaining ring has local damage, as long as the damage department is not from the outside through-type damage of the transmission form of axle center (the damage department is irregular, can be resisted by the second or third has local damaged water retaining ring), under centripetal force's effect, certain water locking ability still can be guaranteed at cylinder sponge both ends, promotes the durability of sponge cylinder.

Because the two ends of the roller sponge are respectively provided with the water locking mechanisms which can avoid the water leakage phenomenon on the side surfaces of the roller, the water locking mechanisms can reduce the friction force between the water locking mechanisms and the cleaning head shell, and simultaneously can improve the water tightness between the roller sponge and the cleaning head shell. Meanwhile, the service life of the cleaning roller can be shortened due to the fact that large friction force exists, the effective performance of the battery is improved, and the overall water absorption and moisture retention performance of the sponge of the roller can be prevented from being reduced.

As shown in fig. 1-12, the present invention also provides a cleaning implement embodiment.

The cleaning tool comprises a cleaning head, the cleaning head comprises a shell, a roller arranged on the shell and a driving motor for driving the roller to work, the roller comprises a roller support and a roller sponge coated outside the roller support, one end of the roller support is provided with a cavity, the other end of the roller support is provided with a telescopic rotating shaft mechanism, and two ends of the roller sponge are respectively provided with a water locking mechanism for preventing liquid from flowing out when the roller is cleaned.

Specifically, the roller bracket 11 is provided with a cavity, one end of the cavity is provided with a driving motor 2, one end of the driving motor 2 is connected with the universal joint B between the shells, the other end of the driving motor 2 is connected with the rotating shaft 15 through a shaft connector 21, and the rotating shaft 15 drives the roller bracket 11 and the roller sponge 12 to rotate.

The telescopic rotating shaft mechanism comprises a rotating shaft 15, one end of the rotating shaft is fixed on the fixed seat 16 and only moves linearly, an elastic component 14 and a rotating shaft cover 13, the rotating shaft 14 is sleeved on the rotating shaft 15 and enables the rotating shaft to be in an extending state, the rotating shaft cover 13 covers the end portion of the rotating shaft 15, a bearing is arranged between the rotating shaft cover and the rotating shaft, the rotating shaft moves inwards linearly when force is applied to the rotating shaft cover, and the elastic component enables the rotating shaft and the rotating shaft cover to extend out when the rotating shaft cover is loosened. The shaft cover 13 is polygonal, such as square, hexagonal or other structures capable of transmitting rotation torque. The water locking mechanism comprises an inclined plane 121 which is inclined inwards and is arranged at any position between the outer diameter and the inner diameter of the roller sponge 12 in the thickness direction, and an annular arc surface is formed in the thickness direction of the roller sponge 12. The annular arc surface of the roller sponge is provided with a water locking layer 120 with density larger than that of the roller sponge. The water-locking layer 120 has a smooth surface. Because the surface of the water locking layer is flat, the friction between the water locking layer and the shell is small after the water locking layer is installed, and meanwhile, the contact surface between the water locking layer and the shell is increased, the length of a watertight path is effectively increased, and therefore the leakage of cleaning liquid can be effectively avoided.

As shown in fig. 9-10, the water locking mechanism can also be implemented by adopting a structure that the water locking mechanism includes a plurality of water retaining rings 10 respectively disposed at two ends of the roller sponge 12 from inside to outside, and the plurality of water retaining rings 10 are located between the radial inner diameter and the radial outer diameter of the roller sponge 12, and may not include the inner diameter and the outer diameter. The sections of the water retaining rings 10 are in a tooth-shaped structure. The plurality of water-guard rings 10 are optimally arranged to be inclined radially outward of the roller sponge 12. Because be equipped with a plurality of breakwater rings 10 and breakwater ring 10 and lean out, can guarantee to install the back, the breakwater ring 10 can form limited great contact surface with between the casing, and the breakwater ring 10 bottom forms the water catch bowl 103 that the position is less than the leak protection interface with cylinder sponge 12 handing-over department, plays better leak protection effect like this. The leakproof interface is the contact surface formed by the contact between the water retaining ring 10 and the shell. And simultaneously, a plurality of water retaining rings which can elastically deform are arranged to jointly act, so that multiple water locking can be realized for two ends of the roller sponge and the side wall of the cleaning head shell. Even if a certain water retaining ring is damaged, the water locking function of the two ends of the roller sponge can still be realized as long as one water retaining ring is complete. Even if there are many places water retaining ring to have local damage or whole water retaining ring has local damage, as long as the damage department is not from the outside through-type damage of the transmission form of axle center (the damage department is irregular, can be resisted by the second or third has local damaged water retaining ring), under centripetal force's effect, certain water locking ability still can be guaranteed at cylinder sponge both ends, promotes the durability of sponge cylinder.

The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the description of the embodiments is only intended to facilitate the understanding of the methods and their core concepts of the present application. Meanwhile, according to the idea of the present application, a person skilled in the art may make changes or modifications based on the specific embodiments and the application range of the present application, and all of them belong to the protection scope of the present application. In view of the above, the description should not be taken as limiting the application.

Claims

1. The utility model provides a clean cylinder of leak protection water, includes cylinder support and the cylinder sponge of cladding in the cylinder support outside, this cylinder support one end is equipped with the cavity, and the other end is equipped with flexible pivot mechanism, its characterized in that cylinder sponge both ends are equipped with the lock water mechanism that prevents the liquid outflow when the cylinder washs respectively.

2. The roller for cleaning of claim 1, wherein the water locking mechanism comprises an inclined surface inclined inward at any position between the outer diameter and the inner diameter in the thickness direction of the roller sponge, and forms an annular arc surface in the thickness direction of the roller sponge.

3. The roller for preventing water leakage of claim 2, wherein the circular arc surface of the roller sponge is provided with a water-locking layer with density higher than that of the roller sponge.

4. A water leakage preventing cleaning roller according to claim 3, wherein the water locking layer has a smooth surface.

5. A water leakage proof roller as claimed in claim 1, wherein the telescopic shaft mechanism includes a shaft having one end fixed to the fixing base and movable only linearly, an elastic member fitted around the shaft to keep the shaft in an extended state, and a shaft cover covering the end of the shaft, a bearing is provided between the shaft cover and the shaft, the shaft moves linearly inward when a force is applied to the shaft cover, and the elastic member makes the shaft and the shaft cover extend when released.

6. The roller for preventing water leakage of claim 1, wherein the water locking mechanism comprises water blocking rings protruding from the roller sponge body at both ends of the roller sponge.

7. The roller for preventing water leakage of claim 6, wherein the outer side of the water guard ring is flush with the outer diameter of the roller sponge.

8. The roller for preventing water leakage of claim 7, wherein the inner side of the water guard ring is a slant surface.

9. The roller for preventing water leakage of claim 6, wherein the water guard ring has directional deformation grooves formed on an outer side thereof, the directional deformation grooves being distributed in a circumferential direction of the water guard ring.

10. A water leakage preventing cleaning roller according to claim 9, wherein the direction-changing groove has a trapezoidal cross section.

11. A water leakage preventing cleaning roller as claimed in claim 6, wherein the water guard ring has an inclined surface inclined outward on both the inner and outer sides.

12. The roller as claimed in claim 1, wherein the water locking mechanism comprises a plurality of water rings with tooth-shaped cross-section respectively disposed at two ends of the roller sponge from inside to outside.

13. A water leakage preventing cleaning roller as set forth in claim 12, wherein the water retaining ring is inclined radially outward of the roller sponge, and a water collecting groove is formed at a junction of the water retaining ring and the roller sponge at a position lower than a leakage preventing junction surface.

14. A cleaning tool comprising a cleaning head including a housing, a roller provided in the housing, and a driving motor for driving the roller to operate, wherein the roller is the water leakage preventing cleaning roller according to any one of claims 1 to 13.