Floor cleaning device

Abstract

The invention relates to a ground cleaning device which comprises a cleaning base, a cleaning device body and a cleaning device body. A handle is arranged at the upper part of the upright machine body, and the lower part of the upright machine body is rotationally connected to the rear part of the seat body; a fluid delivery system; a recovery system; the braking component is movably arranged at the rear part of the seat body between a non-braking position and a braking position; the braking member is configured to be selectively switched to a braking position to mechanically interfere with the lower portion of the upright body to limit forward rotation of the upright body about the first axis relative to the seat body. The brake component is arranged at the cleaning base, an operator can effectively prevent the upright machine body from rotating forwards relative to the base body through the brake component, and therefore the operator can keep the cleaning base at the fixed position of the ground to be cleaned by applying acting force to the handle; therefore, stubborn stains at fixed positions can be cleaned.

Description

Technical Field

[0001] The present application relates to a floor cleaning device. Background Art

[0002] Existing cordless floor cleaning devices, such as floor scrubbers, floor polishers, etc., rely on rechargeable batteries to provide energy for operation. A cleaning base capable of moving along the floor is provided at the bottom of the device, and the cleaning base carries a rotary brush that can be wetted by a cleaning liquid. During the cleaning operation of the floor cleaning device, the rotary brush continuously contacts the dirty floor to be cleaned. The rotation direction of the rotary brush on the cleaning base is usually configured to match the moving direction of the cleaning base to provide assistance for the movement of the cleaning base.

[0003] During the floor cleaning operation of the above floor cleaning device, when encountering stubborn stains on the floor to be cleaned, the operator hopes that the rotary brush of the cleaning base can stay at the stubborn stain for several seconds. However, since the rotary brush in the cleaning operation continuously provides forward movement assistance to the cleaning base, and the upright body with a handle is usually rotatably connected to the cleaning base, this structure will cause the operator's hope of briefly stopping the cleaning base at a fixed position for spot cleaning by applying force to the handle to fail. Because of this, it is difficult for conventional floor cleaning devices to completely remove stubborn stains on the floor. The operator usually needs to use other cleaning operations to perform secondary cleaning on the stubborn stain points, which will greatly affect the floor cleaning efficiency. Summary of the Invention

[0004] In order to solve the above technical problems, the purpose of the present application is to provide a floor cleaning device that can efficiently clean stubborn stains and other floors.

[0005] To achieve the above object, the present application provides a floor cleaning device, including: a cleaning base configured to be movable along the floor to be cleaned and including a base body, a rotary brush rotatably disposed at the front of the base body and drivable to rotate in a direction from the rear to the front, and a support wheel assembly mounted at the rear of the base body; an upright body, the upper part of the upright body is provided with a handle, and the lower part of the upright body is rotatably connected to the rear of the base body about a first axis in the front-rear direction; a fluid delivery system configured to deliver a cleaning fluid to the rotary brush, and the fluid delivery system includes a liquid supply tank for storing liquid; a recovery system configured to recover fluid and debris from the surface to be cleaned and store the recovered fluid and debris, and the fluid recovery system includes a recovery tank and a suction motor assembly in fluid communication with the recovery tank; and a braking member movably disposed between a non-braking position and a braking position at the rear of the base body; the braking member is configured to selectively switch to the braking position to mechanically interfere with the lower part of the upright body to limit the forward rotation of the upright body relative to the base body about the first axis.

[0006] In the present application, by arranging a braking member at the cleaning base, the operator can effectively prevent the upright body from rotating forward relative to the base body by using the braking member, so that the operator can keep the cleaning base at a fixed position on the floor to be cleaned by applying a force at the handle, thereby realizing the cleaning of stubborn stains at the fixed position.

[0007] In a possible implementation manner, the upright body includes a housing and a rotary joint rotatably connected to the housing about a second axis in the left-right direction, and the rotary joint is rotatably connected to the rear of the base body about the first axis; the braking member is configured to selectively mechanically interfere with the rotary joint.

[0008] In a possible implementation manner, a spring is disposed between the braking member and the base body, and the spring is configured to provide a force for rotating the braking member from the braking position to the non-braking position.

[0009] In a possible implementation manner, a groove is provided on the braking member, and a protrusion is provided on the lower part of the upright body; when the braking member is in the non-braking position, the protrusion is away from the groove; when the braking member is in the braking position, the protrusion is located in the groove.

[0010] In a possible implementation, the floor cleaning device further includes: a slider configured to be manually operable by an operator and slidably disposed on the seat body between a first position and a second position, and the slider is drivingly disposed with the braking component; when the slider is slid from the first position to the second position, the braking component moves from the non-braking position to the braking position.

[0011] In a possible implementation, the slider is located above the braking component and they are in contact with each other.

[0012] In a possible implementation, the braking component is rotatably disposed on the seat body about a third axis; when the braking component is in the non-braking position, the braking component is away from the lower part of the upright body; when the braking component is in the braking position, the braking component engages with the lower part of the upright body.

[0013] In a possible implementation, the braking component includes a U-shaped rod, and the seat body includes a top shell, and the U-shaped rod is configured to be rotatably supported on the top shell by manual operation of the operator.

[0014] In a possible implementation, a bayonet is provided at the lower part of the upright body; when the braking component is in the braking position, a part of the U-shaped rod engages at the bayonet.

[0015] In a possible implementation, the floor cleaning device further includes: an electric drive component configured to be able to drive the braking component to move from the non-braking position to the braking position.

[0016] In a possible implementation, the electric drive component includes a suction cup electromagnet, and at least part of the braking component is made of a magnetic material.

[0017] In a possible implementation, the electric drive component includes a push rod electromagnet.

[0018] In a possible implementation, the electric drive component includes a motor.

[0019] Advantages of the preferred solution of this application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the embodiments of this application. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a floor cleaning device according to a preferred embodiment of this application; Figure 2Schematic structural diagram of the cleaning base of the floor cleaning device according to the first embodiment of the present application; wherein, the braking member is in the non-braking position; Figure 3 is Figure 2 Schematic structural diagram of the cleaning base when the braking member is in the braking position; Figure 4 is Figure 2 Schematic side view of the cleaning base when the braking member is in the braking position; Figure 5 Schematic structural diagram of the cleaning base of the floor cleaning device according to the second embodiment of the present application; Figure 6 is Figure 5 Schematic structural diagram of the cleaning base when the braking member is in the non-braking position; Figure 7 is Figure 5 Schematic structural diagram of the cleaning base when the braking member is in the braking position; Figure 8 Schematic diagram of the cleaning base of the third embodiment of the present application when the braking member is in the non-braking position; Figure 9 is Figure 8 Schematic structural diagram of the cleaning base when the braking member is in the braking position; Figure 10 Schematic diagram of the cleaning base of the fourth embodiment of the present application when the braking member is in the non-braking position; Figure 11 is Figure 10 Schematic structural diagram of the cleaning base when the braking member is in the braking position; Figure 12 Schematic structural diagram of the floor cleaning device according to the fifth embodiment of the present application. Detailed implementation manners

[0021] Refer to Figure 1 , which shows the floor cleaning device 100 in the preferred implementation manner of the present application. The floor cleaning device 100 is configured as an upright floor cleaning device, which includes an upright body 1 and a cleaning base 2. The lower part 10 of the upright body 1 is rotatably connected to the rear part of the cleaning base 2 around the transverse axis X1 in the front-rear direction. The floor cleaning device 100 can be used for cleaning floors such as short-haired carpets and hard floors.

[0022] The upright body 1 includes a housing 11, a handle 12 located on the upper side of the housing 11, a supply box 13 and a recycling box 14 detachably mounted on the front side of the housing 11, and a suction motor assembly (not shown in the figure) that is in fluid communication with the recycling box 14. A rotary connector 15 is provided at the lower part 10 of the upright body 1. The rotary connector 15 is rotatably connected to the lower part 111 of the housing 11 about a longitudinal axis Y perpendicular to the lateral axis X1 in the left-right direction. Due to the structure of the rotary connector 15, the upright body 1 can be rotated left or right under the control of the operator, which can facilitate the operator to change the traveling direction of the cleaning base 2.

[0023] The cleaning base 2 is configured to be movable along the ground to be cleaned. The cleaning base 2 includes a base body 21 having a roller brush chamber (not shown in the figure) at the front, a roller brush 22 rotatably disposed in the roller brush chamber and driven by a motor (not shown in the figure) to rotate in the forward-backward direction, a liquid dispenser (not shown in the figure) for dispensing the cleaning liquid from the supply box 13 to the roller brush 22, a suction channel (not shown in the figure) that is in fluid communication with the roller brush chamber and forms part of the recycling path communicating with the recycling box 14, and a support wheel assembly 23 mounted at the rear of the base body 21.

[0024] The rotary connector 15 is simultaneously coupled to the rear of the base body 21. The rotary connector 15 is rotatably supported at the rear of the base body 21 about the lateral axis X1. With the aid of the rotary connector 15, the upright body 1 can move relative to the cleaning base 2 in the front-back direction.

[0025] A fluid delivery system is arranged on the floor cleaning device 100. The fluid delivery system is configured to deliver the cleaning fluid to the roller brush 22. The above-mentioned supply box 13 and liquid dispenser both form part of the fluid delivery system.

[0026] A recycling system is arranged on the floor cleaning device 100. The recycling system is configured to recover fluids and debris from the surface to be cleaned and store the recovered fluids and debris. The above-mentioned suction channel, recycling box 14 and suction motor assembly all form part of the recycling system.

[0027] When the floor cleaning device 100 is working, the cleaning base 2 moves along the floor to be cleaned. The rotary brush 22 will be continuously driven to rotate from the rear to the front. The rotational power of the rotary brush 22 will also provide assistance for the forward movement of the cleaning base 2 from the rear to the front, which can effectively reduce the burden on the operator to push the cleaning base 2 forward. However, due to the assistance provided by the rotary brush 2 to the movement of the cleaning base, combined with the rotational connection relationship between the upright body 1 and the cleaning base 2, it will conversely make it difficult for the operator to position the cleaning base 2 at a fixed position on the floor to be cleaned. When there are stubborn stains at the fixed position, the operator very much expects to perform such an operation. For this reason, the present application proposes a solution of setting a braking component on the cleaning base, using the braking component to prevent the upright body 1 from rotating forward around the cleaning base 2, so that the operator can make the cleaning base 2 stay at the current position briefly by applying a force at the handle 12. Embodiment

[0028] See Figure 2 、 Figure 3 And Figure 4 which shows a partial structural schematic diagram of the cleaning base of the floor cleaning device in the first embodiment. A braking component 3 is configured in the cleaning base 2. The braking component 3 is a manually operated component, and the operator can perform manual operations as needed to move the braking component 3 between a non-braking position (see Figure 2 ) and a braking position (see Figure 3 、 Figure 4 ).

[0029] The braking component 3 is defined by a U-shaped rod, which is rotatably arranged at the rear of the seat body 21. The U-shaped rod is configured to be manually operable by the operator to rotate relative to the seat body 21. Specifically, a pair of open ends of the U-shaped rod are rotatably mounted on the top shell 211 of the seat body 21. A bayonet 112 is provided at the lower part of the housing 11.

[0030] See Figure 2 , when the braking component 3 is in the non-braking position, the braking component 3 is away from the rotary connector 15; when the braking component 2 is in this position, the rotary connector 15 of the upright body 1 can rotate freely forward and backward around the transverse axis X1.

[0031] See Figure 3 And Figure 4, when the braking member 3 is in the braking position, a part of the U-shaped rod abuts against the rotary connector 13 and a part of the U-shaped rod engages at the bayonet 112. The braking member 3 and the rotary connector 15 interfere with each other, and the rotary connector 15 of the upright body 1 is prevented from rotating forward relative to the seat body 21 about the transverse axis X1. At this time, if the operator applies a force at the handle 12 to keep the cleaning base 2 in place, this force will be transmitted to the cleaning base 2 via the housing 11 and the rotary connector 15, and the cleaning base 2 will stay in place. Embodiment

[0032] As Figure 5 , Figure 6 and Figure 7 shown, which shows a schematic structural view of the cleaning base part of the floor cleaning device according to the second embodiment. A braking member 4 is arranged in the cleaning base 2. The braking member 4 also realizes the switching between the non-braking position (see Figure 6 ) and the braking position (see Figure 7 ) through the manual operation of the operator. Different from the first embodiment, in this second embodiment, what the operator directly manually operates is not the braking member 4 itself, but a slider 5 that forms a transmission relationship with the braking member 4. In this example, the slider 5 is located above the braking member 4 and they are in contact with each other. The operator realizes the switching of the braking member 4 between the non-braking position and the braking position by directly manually moving the slider 5.

[0033] The braking member 4 is arranged inside the rear part of the seat body 1. The braking member 4 has a first end 41 and a second end 42. The first end 41 is rotatably mounted on the seat body 21 about the transverse axis X2. A groove 421 with a downward notch is arranged on the second end 42. A protrusion 152 adapted to the groove 421 is arranged at one end of the rotary connector 15.

[0034] As Figure 6 shown, when the braking member 4 is in the non-braking position, the groove 421 on the second end 42 is far from the protrusion 152, and the upright body 1 can freely rotate relative to the cleaning base 2 about the transverse axis X1. As Figure 7 shown, when the braking member 4 is in the braking position, the groove 421 on the second end 42 engages with the protrusion 152, and the braking member 4 and the rotary connector 15 form a mechanical interference relationship; and when the braking member 4 and the rotary connector 15 mechanically interfere with each other, like in the first embodiment, when the operator applies an appropriate force at the handle 12 and it is transmitted to the cleaning base 2, the cleaning base 2 can be made to stay in the current position.

[0035] The slider 5 is configured to be manually operable by the operator and is in a rear first position (see Figure 5 , Figure 6 ) and a front second position (seeFigure 7 It slides between them. When the slider 5 is slid from the first position to the second position, the braking member 4 moves from the non-braking position to the braking position.

[0036] Continue as Figure 6 、 Figure 7 As shown, the lower part 51 of the slider 5 is provided with an inclined surface 511. A concave portion 431 is provided on the top surface 43 of the braking member 4. When the slider 5 is in the first position, the lower part 51 of the slider 5 is located in the concave portion 431; when the slider 5 slides forward from the first position to the second position, the lower part 51 of the slider 5 slides out of the concave portion 43 and presses downward against the top surface 43 of the braking member 4, and the second end portion 42 of the braking member 4 swings downward, and the groove 421 on the second end portion 42 will engage with the protrusion 152, and the braking member 4 enters the braking position.

[0037] In the second embodiment, the braking member 4 is preferably supported on the seat body 21 by a torsion spring (not shown in the figure). The torsion spring undergoes elastic deformation when the braking member 4 changes from the non-braking position to the braking position, and the torsion spring after elastic deformation will be able to provide a restoring force for the braking member 4 to return from the braking position to the non-braking position. Embodiment

[0038] As Figure 8 、 Figure 9 As shown, it shows a schematic structural diagram of the cleaning base part of the floor cleaning device in the third embodiment. A braking member 6 is configured in the cleaning base 2. Different from the first and second embodiments above, the braking member 6 is actuated by an electric drive member to switch between the non-braking position (see Figure 8 ) and the braking position (see Figure 9 ).

[0039] In the third embodiment, the electric drive member that causes the braking member 6 to act is a suction cup electromagnet 7. At least part of the braking member 6 is made of a magnetic attraction material, such as made of materials such as metallic iron, cobalt, nickel, etc.

[0040] The braking member 6 is similar in structure to that in the second embodiment above. It is rotatably mounted on the seat body 2 between the non-braking position and the braking position about the axis line of the rotation axis 71. A torsion spring 72 is provided between the braking member 6 and the seat body 2. The front lower part of the braking member 6 is provided with a groove 621 with a downward notch, and one side end of the rotating connection head 15 is provided with a protrusion 153, and the protrusion 153 is adapted to the groove 621. The suction cup electromagnet 7 is provided on the lower side of the braking member 6.

[0041] As Figure 8 shown, when the braking member 6 is in the non-braking position, the suction cup electromagnet 7 is in the non-powered state, and the groove 621 on the braking member 6 is far from the protrusion 153. As Figure 9As shown, when the braking member 6 enters the braking position, the suction cup electromagnet 7 is in the energized state. The braking member 6, at least part of which is made of a magnetic attraction material, will be attracted by the suction cup electromagnet 7 and rotate downward. The groove 621 of the braking member 6 moves downward and engages with the protrusion 153, and the torsion spring 72 undergoes elastic deformation. When the suction cup electromagnet 7 loses power from the energized state, the elastically deformed torsion spring 72 will provide a restoring force to cause the braking member 6 to return from the braking position to the non-braking position. Embodiment

[0042] As Figure 10 , Figure 11 shown, it shows a schematic structural view of the cleaning base part of the floor cleaning device according to the fourth embodiment. A braking member 8 is configured in the cleaning base 2. Similar to the above-described third embodiment, the braking member 8 can also be actuated by an electric drive member to switch between a non-braking position (see Figure 10 ) and a braking position (see Figure 11 ).

[0043] In the fourth embodiment, the electric drive member that causes the braking member 8 to act is a push rod electromagnet 9. The push rod 91 on the push rod electromagnet 9 is located below the braking member 8 and engages with the braking member 8.

[0044] The braking member 8 is similar to the above-described second, third, and fourth embodiments. One end portion thereof can be rotatably mounted on the seat body 2 between the non-braking position and the braking position around the axis line of the rotation shaft 81. A torsion spring (not shown in the figure) is also provided between the braking member 8 and the seat body 2. The front lower part of the braking member 8 is provided with a groove 821 with a downward notch. One side end portion of the rotating connection head 15 is provided with a protrusion 154, and the protrusion 154 is adapted to the groove 821.

[0045] The push rod 91 of the push rod electromagnet 9 is arranged below the braking member 6.

[0046] As Figure 10 shown, when the braking member 8 is in the non-braking position, the push rod electromagnet 9 is in the non-energized state, the push rod 91 is pushed upward, the braking member 8 is pushed upward, and the groove 821 and the protrusion 154 are separated from each other. As Figure 11 shown, when the braking member 8 is in the braking position, the push rod electromagnet 9 is energized, the push rod 91 moves downward and drives the compression spring 92 on the push rod electromagnet 9 to undergo elastic deformation. After the braking member 8 loses the supporting force of the push rod 91, it will swing downward under the action of gravity and the torsion spring, and the protrusion 153 engages with the groove 621. When the push rod electromagnet 9 loses power from the energized state, the compression spring 92 will provide an upward pushing force to the push rod 91, the braking member 8 is driven to swing upward, the protrusion 154 and the groove 821 are separated again, and the braking member 8 returns to the non-braking position. Embodiment

[0047] As shown Figure 12 in the figure, it shows a schematic structural view of the cleaning base part of the floor cleaning device according to the fifth embodiment. A braking member 80 is configured in the cleaning base 2. The braking member 80 can also be actuated by an electric drive member to switch between non-braking positions.

[0048] In the fifth embodiment, the electric drive member that causes the braking member 80 to act is a motor 90. The output shaft of the motor 90 is in transmission connection with the braking member 80. The operator can achieve switching of the braking member 80 between the non-braking position and the braking position by controlling the motor to be allowed.

[0049] The structural solution of the braking member 80 is similar to the structural solutions of the second, third, and fourth embodiments. It can be rotatably mounted at the rear of the seat body 2 between the non-braking position and the braking position around the axis X3 of the rotation axis (not shown in the figure). A downwardly notched groove 8021 is provided at the lower front part of the braking member 80. A protrusion 155 is provided at one end of the rotating connection head 15. The protrusion 155 is adapted to the groove 8021.

[0050] The above-mentioned braking member and each component that drives the braking member to act are all illustrative examples. There can be various other ways. For example, the braking member can be switched between the braking position and the non-braking position by sliding operation. The way of manually operating the braking member to switch between the braking position and the non-braking position is not limited to the above-mentioned U-shaped rod or slider solutions. The electric drive member that drives the braking member to act is not limited to the above-mentioned type either. Any mechanism that can facilitate the operator to operate the braking member to act can be used here.

[0051] In the technical solution of the present application, by arranging a controllable braking member on the cleaning base 2, the operator can use this braking member to prevent the upright body 1 from rotating relative to the cleaning base 2 around the transverse axis X1, so that the force applied by the operator at the handle 12 to keep the cleaning base 2 at a certain fixed position on the floor to be cleaned can be transmitted to the cleaning base 2, so that the roller brush 22 of the cleaning base 2 can clean the stubborn stains at this fixed position, improving the cleaning effect.

[0052] 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. What is described in the above embodiments and the specification only illustrates the principles of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements. The scope of protection required by the present application is defined by the appended claims, the specification, and their equivalents.

Claims

1. A floor cleaning device, characterized in that: include: The cleaning base is configured to be movable along the floor to be cleaned and includes a base body, a roller brush arranged at the front of the base body and capable of being driven to rotate in a direction from back to front, and a support wheel assembly installed at the rear of the base body; An upright body, wherein the upper portion of the upright body is provided with a handle, and the lower portion of the upright body is rotatably connected to the rear portion of the seat body in the front-rear direction around a first axis; A fluid delivery system, configured to deliver cleaning fluid to the roller brush, the fluid delivery system comprising a fluid supply tank for storing liquid; a recovery system configured to recover fluid and debris from a surface to be cleaned and to store the recovered fluid and debris, the fluid recovery system comprising a recovery tank and a suction motor assembly in fluid communication with the recovery tank; as well as A braking component is movably arranged at the rear of the seat body between a non-braking position and a braking position; the braking component is configured to selectively switch to the braking position to mechanically interfere with the lower part of the upright body to limit the upright body from rotating forward relative to the seat body around the first axis.

2. The floor cleaning device according to claim 1, characterized in that: The upright body includes a casing and a rotating connector that can be rotatably connected to the casing in the left and right directions around a second axis, and the rotating connector can be rotatably connected to the rear of the base around the first axis; the braking component is configured to selectively interfere mechanically with the rotating connector.

3. The floor cleaning device according to claim 1, characterized in that: A spring is arranged between the braking component and the seat body, and the spring is configured to provide a force for the braking component to rotate from the braking position to the non-braking position.

4. The floor cleaning device according to claim 1, characterized in that: The braking component is provided with a groove, and the lower part of the upright body is provided with a protrusion; when the braking component is in the non-braking position, the protrusion is away from the groove; when the braking component is in the braking position, the protrusion is located in the groove.

5. The floor cleaning device according to claim 1, characterized in that: Also includes: The slider is constructed to be slidably arranged on the seat body between a first position and a second position by manual operation of an operator, and the slider is arranged in transmission with the braking component; when the slider is slid from the first position to the second position, the braking component moves from the non-braking position to the braking position.

6. The floor cleaning device according to claim 5, characterized in that: The sliding block is located on the upper side of the braking component and the two are in contact with each other.

7. The floor cleaning device according to claim 1, characterized in that: The braking component is rotatably arranged on the seat body around a third axis; when the braking component is in a non-braking position, the braking component is away from the lower part of the upright body; when the braking component is in a braking position, the braking component is engaged with the lower part of the upright body.

8. The floor cleaning device according to claim 7, characterized in that: The braking component comprises a U-shaped rod, the seat body comprises a top shell, and the U-shaped rod is constructed to be rotatably supported on the top shell for manual operation by an operator.

9. The floor cleaning device according to claim 8, characterized in that: A bayonet is arranged at the lower part of the upright body; when the braking component is located at the braking position, part of the U-shaped rod is engaged with the bayonet.

10. The floor cleaning device according to claim 1, characterized in that: Also includes: The electric drive component is configured to drive the braking component to move from the non-braking position to the braking position.

11. The floor cleaning device according to claim 10, characterized in that: The electric drive component comprises a suction cup electromagnet, and at least a part of the braking component is made of magnetic attraction material.

12. The floor cleaning device according to claim 10, characterized in that: The electric drive component includes a push rod electromagnet.

13. The floor cleaning device according to claim 10, characterized in that: The electric drive component includes a motor.

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