Surface cleaning apparatus

Abstract

The invention discloses a surface cleaning device which comprises a ground brush assembly, a ground brush assembly, a ground brush assembly, a liquid distributor and a suction pipeline, the ground brush assembly comprises a shell, a rolling brush installed on the front portion of the shell, and the liquid distributor is used for distributing cleaning liquid to the rolling brush; the ground brush assembly further comprises a biasing device, the biasing device is arranged between the front portion of the shell and the rear portion of the shell, the biasing device is arranged between the front portion of the shell and the rear portion of the shell, and the biasing device is constructed to enable the front portion of the shell to apply downward acting force to the rolling brush. The biasing device comprises a movable part and a force transmission part, the movable part can be movably arranged at the rear part of the shell, the force transmission part is provided with a front end part and a rear end part, the front end part is connected with the front part of the shell, and the rear end part is connected with the movable part. According to the scheme, the bias device is arranged on the floor brush assembly, so that an operator can act on the front portion of the shell through the bias device, and the friction force between the rolling brush and the surface to be cleaned is increased.

Description

Technical Field

[0001] The present application relates to the technical field of surface cleaning, and in particular to a surface cleaning device. Background Art

[0002] Surface cleaning equipment, such as floor scrubbers and floor scrubbers, is equipped with a floor brush assembly that can move along the surface to be cleaned. The floor brush assembly carries a roller brush that can be wetted by a cleaning liquid. During the cleaning work of the surface cleaning equipment, the surface floor brush assembly moves along the surface to be cleaned, and the roller brush contacts the surface to be cleaned and continuously picks up dirt on the surface to be cleaned.

[0003] In common surface cleaning equipment, the roller brush is arranged at the front of the floor brush assembly. When the surface cleaning equipment is performing cleaning work, the operator drives the floor brush assembly to move on the surface to be cleaned; when stubborn stains appear on the surface to be cleaned, the operator hopes to increase the friction between the roller brush and the surface to be cleaned to achieve cleaning of the stubborn stains. However, since it is difficult for the force applied by the operator to reach the roller brush, this will cause the operator's plan to increase the friction between the roller brush and the surface to be cleaned to fail. Because of this, it is difficult for conventional surface floor brush assemblies to completely remove stubborn stains on the surface to be cleaned, and the operator usually needs to use other cleaning tools to perform secondary cleaning on the stubborn stains, which will greatly affect the cleaning efficiency of the equipment. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a surface cleaning device that can effectively improve the cleaning ability of the roller brush.

[0005] To solve the above technical problems, the present application provides a surface cleaning device, comprising a floor brush assembly capable of moving along a surface to be cleaned, comprising a shell whose front defines a roller brush chamber, a roller brush that can be driven to rotate around its own axis and is arranged in the roller brush chamber, a liquid dispenser for dispensing cleaning liquid to the roller brush, and a suction pipe connected to the fluid of the roller brush chamber; the floor brush assembly also includes a biasing device, which is arranged between the front of the shell and the rear of the shell, and the biasing device is constructed to enable the front of the shell to apply a downward force toward the roller brush, and the biasing device includes a movable part and a force transmission part, the movable part can be movably arranged at the rear of the shell, and the force transmission part has a front end and a rear end, the front end is connected to the front of the shell, and the rear end is connected to the movable part.

[0006] According to one embodiment of the present application, the force transmission component is a traction belt or a traction rope.

[0007] According to an embodiment of the present application, the force transmission component is a tension spring, and when the force transmission component is in an elastically deformed state, the front end portion is located above and in front of the rear end portion.

[0008] According to an embodiment of the present application, the movable component is rotatably connected to the rear portion of the shell.

[0009] According to one embodiment of the present application, the floor brush assembly further comprises a rotatable connector rotatably arranged at the rear of the shell body around a horizontal axis, and the movable part is rotatably arranged on the rotatable connector around the horizontal axis.

[0010] According to an embodiment of the present application, a boss is provided at one end of the rotary connector, and the movable component is attached to the boss.

[0011] According to one embodiment of the present application, the surface cleaning device is a vertical surface cleaning device and includes a body component, wherein the body component includes a handle located at the upper portion, and the lower portion of the body component is connected to the rotating connector.

[0012] According to one embodiment of the present application, the body assembly includes a cleaning liquid supply tank, a dirty liquid recovery tank and a suction motor, the cleaning liquid supply tank can be fluidically connected to the liquid distributor, and the suction pipe, the dirty liquid recovery tank and the suction motor are fluidically connected in sequence.

[0013] According to an embodiment of the present application, the biasing device further includes an actuating mechanism, the actuating mechanism being configured to cause the movable part to rotate relative to the rear of the housing, the actuating mechanism being coupled to the movable part.

[0014] According to an embodiment of the present application, the actuating mechanism includes an operating component, and the operating component is configured to be manually operated by an operator to drive the movable component to rotate relative to the rear portion of the housing.

[0015] According to an embodiment of the present application, the operating component includes a shift block, and the shift block is arranged at the rear of the shell.

[0016] According to one embodiment of the present application, the shift block can be maintained at a first position and a second position respectively; when the shift block is in the first position, the force transmission component has a first elastic deformation; when the shift block is in the second position, the force transmission component has a second elastic deformation greater than the first elastic deformation.

[0017] According to an embodiment of the present application, the movable component has a first end and a second end, the shift block is in contact with the first end, and the rear end of the force transmission component is connected to the second end.

[0018] According to an embodiment of the present application, the shift block is slidably disposed on the top wall of the rear portion of the shell.

[0019] According to an embodiment of the present application, the actuating mechanism includes a motor; the motor is arranged in a transmission manner with the movable component to drive the movable component to rotate relative to the rear of the housing.

[0020] Compared with the prior art, the beneficial effects of the present application are as follows: by arranging a biasing device on the floor brush assembly, the operator can act on the front part of the shell through the biasing device to make the front part of the shell apply a downward force toward the roller brush; this force will increase the friction between the roller brush and the surface to be cleaned, thereby improving the floor cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of a surface cleaning device according to an embodiment of the present application; Figure 2 It is a structural schematic diagram of a biasing device provided at a floor brush assembly according to an embodiment of the present application; Figure 3 yes Figure 2 A schematic diagram of a biasing device when a shift block moves to a second position; Figure 4 is a structural schematic diagram of a floor brush assembly provided with a biasing device in another embodiment of the present application; Figure 5 yes Figure 2 A schematic diagram of a biasing device when a shift block moves to a second position; Figure 6 It is a structural schematic diagram of a floor brush assembly in another embodiment of the present application in which a biasing device is provided. DETAILED DESCRIPTION

[0022] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the present application.

[0023] See also Figure 1, which shows a surface cleaning device 100 of a preferred embodiment of the present application. The surface cleaning device 100 is constructed as a vertical floor cleaning device, which includes a body assembly 1 and a floor brush assembly 2. The lower part of the body assembly 1 can be rotatably connected to the rear part of the floor brush assembly 2 in the front-to-back direction around the horizontal axis X1. The surface cleaning device 100 can be used for cleaning floors such as short-haired carpets and hard floors.

[0024] The body assembly 1 includes a housing 11, a handle 12 located on the upper side of the housing 11, a cleaning liquid supply tank 13 and a dirty liquid recovery tank 14 detachably mounted on the front side of the housing 11, and a suction motor assembly (not shown) in fluid communication with the dirty liquid recovery tank 14. The lower portion of the body assembly 1 is connected to the rear portion of the floor brush assembly 2.

[0025] The floor brush assembly 2 is configured to be movable along the surface to be cleaned. The floor brush assembly 2 includes a housing 21 having a roller brush chamber 20 at the front 211, a roller brush 22 that can be driven by a roller brush motor (not shown in the figure) to rotate around its own axis in the roller brush chamber 20, a liquid distributor (not shown in the figure) for distributing the cleaning liquid from the cleaning liquid supply tank 13 to the roller brush 22, a suction channel (not shown in the figure) that is fluidly connected to the roller brush chamber 20 and constitutes a part of the recovery path connected to the dirty liquid recovery tank 14, and a rotating connector 23 installed at the rear 212 of the housing 21.

[0026] The rotating connector 23 is supported on the rear portion 212 of the housing 21 so as to be rotatable around the horizontal axis X1. With the help of the rotating connector 15, the body assembly 1 can rotate relative to the floor brush assembly 2 in the front-rear direction.

[0027] A fluid delivery system is arranged on the surface cleaning device 100. The fluid delivery system is configured to deliver the cleaning fluid to the roller brush 22. The cleaning fluid supply tank 13 and the liquid distributor mentioned above both constitute a part of the fluid delivery system.

[0028] A recovery system is arranged on the surface cleaning device 100. The recovery system is configured to recover fluid and debris from the surface to be cleaned and store the recovered fluid and debris. The above-mentioned suction channel, dirty liquid recovery tank 14 and suction motor assembly all constitute part of the recovery system.

[0029] When the surface cleaning device 100 performs cleaning work, the floor brush assembly 2 moves along the surface to be cleaned, and the roller brush 22 will be continuously driven to rotate from back to front. The rotational power of the roller brush 22 will also provide assistance to the movement of the floor brush assembly 2 from back to front, which can effectively reduce the burden of the operator pushing the floor brush assembly 2 from back to front. When encountering stubborn stains during the cleaning process, the operator eagerly hopes to increase the friction between the roller brush 22 and the surface to be cleaned where the stubborn stains are located; then, since the connection position between the body assembly 1 and the floor brush assembly 2 is located at the rear 212 of the shell 21, and the roller brush 22 is located at the front 211 of the shell 21, it will be difficult for the operator to use the handle 12 to apply a force to the roller brush 22 to increase the friction with the surface to be cleaned, and it is difficult for the operator to increase the friction between the roller brush 22 and the surface to be cleaned. To this end, the present application proposes a solution of arranging a biasing device on the floor brush assembly, and utilizing the biasing device to act on the front of the housing 21 to bias the roller brush 22 located at the front 211 of the housing 21 toward the surface to be cleaned, thereby increasing the friction between the roller brush 22 and the surface to be cleaned. Several examples of floor brush assemblies 2 equipped with biasing devices are listed below. Example

[0030] See also Figure 2 and Figure 3 , which shows a partial structural schematic diagram of a floor brush assembly 2 of a surface cleaning device of this embodiment. The floor brush assembly 2 is provided with a biasing device 3. The biasing device 3 is located between the front portion 211 and the rear portion 212 of the housing 21, and can act on the front portion 211 of the housing 21, so that the front portion 211 of the housing 21 applies a downward force to the roller brush 22.

[0031] The biasing device 3 includes a shift block 31, a movable component 32 and a tension spring 33. The shift block 31, the movable component 32 and the tension spring 33 are connected in sequence. In this example, the shift block 31 is used as an actuating mechanism for causing the movable component 32 to move relative to the rear portion 212 of the housing 21 to adjust the elastic deformation amount of the tension spring 33, and is slidably disposed at the top wall of the rear portion 212 of the housing 21. The lower end of the shift block 31 contacts the movable component 32, and when the shift block 31 slides forward and backward, the movable component 32 rotates.

[0032] The movable member 32 is rotatably supported on the rear portion 211 of the housing 21 via the pivot 310. The movable member 32 has a first end 321 and a second end 322 located on both sides of the pivot 310. The shift block 31 contacts the first end 321 from the upper side thereof.

[0033] The tension spring 33 is constructed to transmit the force of the movable part 32 to the front part 211 of the housing 21 in an elastically deformed state, and the force can cause the front part 211 of the housing 21 to press the roller brush 22 toward the floor to be cleaned. The front end 331 of the tension spring 33 is connected to the front part 211 of the housing 21, and the rear end 332 of the tension spring 33 is connected to the second end 322 of the movable part 32. When the first end 321 of the movable part 32 is triggered to rotate by the shift block 31, the second end 322 of the movable part 32 also rotates, and the rear end 332 of the tension spring 33 moves accordingly, and the elastic deformation amount of the tension spring 33 changes.

[0034] See also Figure 2 At this time, the shift block 31 is moved and maintained at the first rearward position, and the first end 322 of the movable component 32 is roughly located in the front upper part of the rotating connection point 320, and the second end 322 of the movable component 32 is roughly located in the front lower part of the rotating connection point 320, and the front end 331 of the tension spring 33 is roughly flush with the upper part of the rear end 332; the tension spring 33 is in a natural state or has a small elastic deformation.

[0035] See also Figure 3 , at this time, the shift block 31 is moved and maintained at the second forward position, at this time, the first end 322 of the movable part 32 is roughly rotated to be located in front of the rotation connection point 320, the second end 322 of the movable part 32 is rotated to a lower position flush with the rotation connection point 320, and the rear end 332 of the tension spring 33 is moved to the rear and lower part of the front end 331. Compared with the tension spring 33 Figure 2 In the state of tension spring 33 being stretched and deformed elastically, the force is strengthened. In this elastic deformation state, tension spring 33 will generate a force F toward the rear and downward direction on the front part 211 of housing 21, and this force F will generate a horizontal force F1 and a vertical force F2 as shown in the figure; the force F2 will enable the front part 211 of housing 21 to apply a downward force toward roller brush 22, thereby increasing the friction between roller brush 22 and the surface to be cleaned. Example

[0036] See also Figure 4 and Figure 5 , which shows another type of biasing device 5 configured in the floor brush assembly 2. As in the above-mentioned embodiment 1, the biasing device 5 is located between the front portion 211 and the rear portion 212 of the housing 21, and can act on the front portion 211 of the housing 21, so that the front portion 211 of the housing 21 applies a downward force toward the roller brush (not shown in the figure).

[0037] The biasing device 5 includes a shift block (not shown in the figure), a movable component 52 and a tension spring 53. The movable component 52 is different from the movable component 32 in the first embodiment in that the installation position is different. In this example, the movable component 52 is supported at the protrusion 231 at one end of the rotating connector 23 so as to be rotatable around the horizontal axis X1. When the movable component 52 is triggered to rotate around the horizontal axis X1, the elastic deformation amount of the tension spring 53 changes.

[0038] See also Figure 4 and Figure 5 , Figure 5 The moving parts in 52 are compared to Figure 4 The first end of the movable part 52 in the embodiment rotates forward by a certain angle, and the tension spring 53 is Figure 4 The elastic deformation of the tension spring 53 increases, and the force is strengthened. The tension spring 53 can produce a force effect substantially the same as that of the first embodiment in this elastic deformation state, and the component force of the elastic restoring force can also make the front portion 211 of the housing 21 exert a downward force toward the roller brush 22, thereby increasing the friction between the roller brush and the surface to be cleaned.

[0039] The shifting block in this embodiment may also be omitted, and instead a portion of the movable component 32 is directly exposed, and the operator rotates the movable component by directly applying a force to the movable component. Example

[0040] See also Figure 6 , which shows another type of biasing device 6 configured in the floor brush assembly 2. As in the above-mentioned embodiments 1 and 2, the biasing device 6 is located between the front and rear portions of the housing 21, and can act on the front portion of the housing 21 so that the front portion of the housing 21 applies a downward force to the roller brush 22.

[0041] In this example, the biasing device 6 includes a motor 61, a movable part 62, and a tension spring 63. In this example, the motor 61 constitutes an actuating mechanism for adjusting the elastic deformation of the tension spring 63; the motor 61 is installed at the rear of the housing 21, and the movable part 62 can rotate around the horizontal axis X1 under the drive of the motor 61. As in the second embodiment, when the movable part 62 rotates around the horizontal axis X1, the tension spring 63 will be elastically deformed, and the force transmitted by the tension spring 63 will cause the front of the housing 21 to apply a downward force to the roller brush 22.

[0042] The above-mentioned tension spring is used as an example of a force transmission component, and it can also have many other forms, such as a traction belt, a traction rope, etc.; the movable component and the actuating mechanism are also examples, and it can also have many forms, such as the movable component can be set at the rear of the shell in a sliding, swinging and other movable ways, and the manually operated actuating mechanism such as a shift block can also be a knob, a push button, etc.; the electrically driven actuating mechanism such as a motor can also be an electromagnet and other solutions; the movable component and the actuating mechanism are not limited to the above-mentioned types, and all solutions that can facilitate the operator to operate the biasing device can be used here.

[0043] In the technical solution of the present application, by arranging a biasing device on the floor brush assembly 2, the operator can use the biasing device to act on the front part 211 of the housing 21, so that the front part 211 of the housing 21 applies a downward force to the roller brush 22, thereby increasing the friction between the roller brush 22 of the floor brush assembly 2 and the surface to be cleaned, and achieving the cleaning of stubborn stains at this position. Of course, the increase in the friction between the roller brush 22 and the surface to be cleaned will inevitably increase the movement resistance of the floor brush assembly 2 along the surface to be cleaned, which can be comprehensively considered when designing the elastic reset force that the tension spring can apply.

[0044] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, and the scope of protection required by the present application is defined by the attached claims, description and their equivalents.

Claims

1. A surface cleaning device, comprising a floor brush assembly that can move along a surface to be cleaned, comprising a housing defining a roller brush chamber at the front, a roller brush that can be driven to rotate around its own axis and is arranged in the roller brush chamber, a liquid distributor for distributing cleaning liquid to the roller brush, and a suction pipe in fluid communication with the roller brush chamber; characterized in that: The floor brush assembly also includes a biasing device, which is arranged between the front of the shell and the rear of the shell. The biasing device is constructed to enable the front of the shell to apply a downward force toward the roller brush. The biasing device includes a movable part and a force transmission part. The movable part can be movably arranged at the rear of the shell. The force transmission part has a front end and a rear end. The front end is connected to the front of the shell, and the rear end is connected to the movable part.

2. The surface cleaning device according to claim 1, characterized in that The force transmission component is a traction belt or a traction rope.

3. The surface cleaning device according to claim 1, characterized in that The force transmission component is a tension spring. When the force transmission component is in an elastic deformation state, the front end portion is located above and in front of the rear end portion.

4. The surface cleaning device according to claim 3, characterized in that The movable component is rotatably connected to the rear part of the shell.

5. The surface cleaning device according to claim 4, characterized in that The floor brush assembly also includes a rotating connector which is rotatably arranged at the rear of the shell body around a horizontal axis, and the movable component is rotatably arranged on the rotating connector around the horizontal axis.

6. The surface cleaning device according to claim 5, characterized in that One end of the rotary connector is provided with a convex column, and the movable component is mounted on the convex column.

7. The surface cleaning device according to claim 5, characterized in that The surface cleaning device is a vertical surface cleaning device and comprises a body assembly, wherein the body assembly comprises a handle at the upper portion, and the lower portion of the body assembly is connected to the rotating connector.

8. The surface cleaning device according to claim 7, characterized in that The fuselage assembly comprises a cleaning liquid supply tank, a dirty liquid recovery tank and a suction motor. The cleaning liquid supply tank can be fluidically connected to the liquid distributor. The suction pipeline, the dirty liquid recovery tank and the suction motor are fluidically connected in sequence.

9. The surface cleaning device according to claim 1, characterized in that The biasing device further includes an actuating mechanism configured to cause the movable member to rotate relative to the rear portion of the housing, the actuating mechanism being coupled to the movable member.

10. The surface cleaning device according to claim 9, characterized in that The actuating mechanism includes an operating component, and the operating component is configured to be manually operated by an operator to drive the movable component to rotate relative to the rear portion of the housing.

11. The surface cleaning device according to claim 9, characterized in that The operating component comprises a shift block, and the shift block is arranged at the rear part of the housing.

12. The surface cleaning device according to claim 11, characterized in that The shift block can be maintained at a first position and a second position respectively; when the shift block is in the first position, the force transmission component has a first elastic deformation amount; When the shift block is in the second position, the force transmission component has a second elastic deformation greater than the first elastic deformation.

13. The surface cleaning device of claim 11, wherein: The movable component has a first end and a second end, the shift block is in contact with the first end, and the rear end of the force transmission component is connected to the second end.

14. The surface cleaning device of claim 11, wherein: The shift block is slidably arranged on the top wall of the rear part of the shell body.

15. The surface cleaning device of claim 9, wherein: The actuating mechanism comprises a motor; the motor is arranged in transmission with the movable component to drive the movable component to rotate relative to the rear part of the housing.

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