A mop unit lifting device and cleaning machine

Abstract

The application discloses a mop unit lifting device, which comprises a mop unit, and further comprises a lifting mechanism for lifting the mop unit, and a driving mechanism for driving the mop unit to rotate; the driving mechanism adopts a first driving mechanism which does not lift together with the mop unit, and the lifting mechanism is integrally arranged with the mop unit or is separately arranged with the mop unit, or the driving mechanism adopts a second driving mechanism which lifts together with the mop unit, and the lifting mechanism is separately arranged with the mop unit; the mop unit lifting device has the advantages that the mop unit can be directly lifted, and the problem of heavy weight of the lifting part is overcome; and the application further discloses a cleaning machine adopting the mop unit lifting device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a mop unit lifting device and a cleaning machine. BACKGROUND

[0002] There is a cleaning machine which has important market value because it can realize automatic rotation mop and other functions, but the rotating mop units in the current cleaning machine are usually lifted integrally, that is, the rack or shell installed with the mop units is lifted integrally, and the rack or shell needs to be installed with driving mechanisms for driving the mop units to rotate and clean, that is, the mop units are indirectly lifted, which leads to heavy overall weight. The applicant found that the technical route of integral lifting leads to easy change of gravity center, which has adverse effects on stable operation of the cleaning machine, so special attention needs to be paid to matching of the gravity center under different lifting conditions during design, production and manufacturing. The structure is complex, and the design, production and manufacturing are relatively complicated and high in cost. SUMMARY

[0003] In view of the above problems in the prior art, a mop unit lifting device is provided to directly lift the mop unit and overcome the problem of heavy weight at the lifting position. A cleaning machine is also provided which adopts the aforementioned mop unit lifting device.

[0004] The specific technical solutions are as follows:

[0005] A mop unit lifting device includes a mop unit and further includes:

[0006] A lifting mechanism for lifting the mop unit;

[0007] A driving mechanism for driving the mop unit to rotate;

[0008] The driving mechanism adopts a first driving mechanism which does not lift together with the mop unit, and the lifting mechanism is integrally arranged with the mop unit or separately arranged with the mop unit,

[0009] Alternatively, the driving mechanism adopts a second driving mechanism which lifts together with the mop unit, but the lifting mechanism is separately arranged with the mop unit.

[0010] The above technical solutions have the following beneficial effects:

[0011] In the first case, the driving mechanism adopts the first driving mechanism which does not lift together with the mop unit, and the lifting mechanism is integrally arranged with the mop unit or separately arranged with the mop unit, so as to reduce the weight of the lifting position of the mop unit, especially when the lifting mechanism is separately arranged with the mop unit, the weight can be further reduced, which is convenient for design of the gravity center of the whole machine and overcomes the problem of heavy weight at the lifting position.

[0012] In the second case, the direct lifting mop unit is realized, and the driving mechanism adopts a second driving mechanism which is lifted together with the mop unit, but the lifting mechanism is arranged separately from the mop unit, so that the weight allocated to the part where the mop unit is located can be effectively reduced, and the design of the gravity center of the whole machine is facilitated, and the problem of heavy weight of the lifting part is overcome.

[0013] Preferably, the lifting mechanism adopts a rack and pinion lifting mechanism, a screw lifting mechanism, a cam lifting mechanism, a swing rod lifting mechanism or an electromagnetic lifting mechanism, which are all suitable for the present application and can be selected flexibly according to the design of the gravity center of the whole machine.

[0014] Preferably, the lifting mechanism is arranged integrally with the mop unit, and the extension end of the lifting mechanism is connected with the mop unit. The above structure is suitable for the case where the lifting mechanism is arranged integrally with the mop unit. For example, a linear motor is arranged coaxially with the mop unit to directly drive the lifting of the mop unit. Although the structure is compact and efficient, the overall structure height is high, and a linear motor needs to be arranged for each mop unit, which increases the cost. Alternatively, the lifting mechanism is arranged separately from the mop unit, and the lifting mechanism is provided with a lifting member which can move up and down, and the lifting member is connected with the rotating shaft of the mop unit. The lifting mechanism indirectly drives the lifting of the rotating shaft through the lifting member. The above structure is suitable for the case where the lifting mechanism is arranged separately from the mop unit, which is beneficial to control the height of the overall structure, and a power unit does not need to be arranged for each mop unit. In addition, the position arrangement of the components of the lifting mechanism can be more flexible.

[0015] Preferably, the lifting member adopts a beam member which connects the mop units, and the driving part of the lifting mechanism is arranged between the mop units, and the driving part is used to drive the lifting of the beam member. The structure is compact, simple and reliable. In addition, the synchronization of the lifting of the mop units is good. In addition, it is also convenient to arrange the components of the lifting mechanism and to arrange the driving part at the central position of the beam member. If the driving part is arranged at the central position of the beam member, the mechanical properties of the lifting are better.

[0016] Preferably, the mop unit comprises a mop, a rotating disc and a rotating shaft. The mop is connected with the rotating disc, and the rotating shaft is connected with the rotating disc. The rotating shaft is used to lift the rotating disc and also to drive the rotation of the rotating disc.

[0017] Preferably, the rotating shaft comprises an inner shaft and an outer shaft, the inner shaft is sleeved with the outer shaft, a limiting structure is arranged between the inner shaft and the outer shaft, the limiting structure enables the inner shaft and the outer shaft to move axially relative to each other but is limited in the circumferential direction, the outer shaft drives the inner shaft to rotate synchronously through the limiting structure, the inner shaft is connected with the rotating disc, and the inner shaft is used to drive the rotating disc to lift and rotate together, or the inner shaft drives the outer shaft to rotate synchronously through the limiting structure, the outer shaft is connected with the rotating disc, and the outer shaft is used to drive the rotating disc to lift and rotate together, and the above structure has the advantages of simple and compact structure and stability and reliability.

[0018] Preferably, the outer shaft is in transmission connection with the first driving mechanism, the outer shaft drives the inner shaft to rotate synchronously through the limiting structure, the limiting structure is provided with a connecting portion, the connecting portion is connected with the lifting mechanism, the lifting mechanism is arranged separately from the mop unit, and the lifting mechanism drives the inner shaft to move axially relative to the outer shaft through the connecting portion, and the above structure can greatly simplify the arrangement and layout of the first driving mechanism and the lifting mechanism, reduce the weight of the lifting part of the mop unit, and optimize the gravity center of the whole machine.

[0019] Preferably, the mop unit lifting device further comprises an elastic member, for the case that the inner shaft is connected with the rotating disc, the elastic member is used to elastically support the inner shaft and / or the rotating disc downward, for the case that the outer shaft is connected with the rotating disc, the elastic member is used to elastically support the outer shaft and / or the rotating disc downward, and no matter which case, the arrangement and layout of the lifting mechanism are facilitated, because the elastic member provides elastic support downward, so the lifting mechanism only needs to mainly pay attention to lifting the mop unit, when descending, the lifting mechanism releases the mop unit, under the action of the gravity of the mop unit, the mop unit naturally descends, under the action of the elastic member, the mop elastically adheres to the surface to be wiped, along with the change of the unevenness of the surface to be wiped, under the action of the elastic member, the mop also naturally rises and falls, so that the mop can better clean the surface to be wiped.

[0020] Preferably, the mop unit lifting device further comprises a position detection mechanism, the position detection mechanism is used to control the lifting position of the mop unit, so that the position of the mop unit can be better controlled, the lifting function is stably operated, and better use experience is ensured.

[0021] The mop unit lifting device is used for the cleaning machine.

[0022] The mop unit lifting device has the advantages of:

[0023] The mop unit is directly lifted, the problem of heavy weight of the lifting part is overcome, the lifting function of the mop unit is more reliable in the long-term use of the cleaning machine, and therefore, the reliability of the cleaning machine is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 FIG. 1 is a perspective view of the mop unit lifting device of the present application.

[0025] Figure 2 Figure 2 is a perspective view of the mop unit lifting device of the present application (the outer shaft is removed).

[0026] Figure 3 Figure 3 is a perspective view of the mop unit lifting device of the present application (the screw rod is removed).

[0027] The reference numerals are as follows: 1, mop unit; 2, lifting member; 3, outer shaft; 4, inner shaft; 5, bearing; 6, connecting portion; 7, gear; 8, first turbine; 9, second turbine; 10, first motor; 11, first worm; 12, second motor; 13, second worm; 14, guide rod; 15, matching groove; 16, elastic member; 17, screw rod. DETAILED DESCRIPTION

[0028] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments described below are only examples of the present application, and other obvious modifications are possible to those skilled in the art. The basic principles defined in the following description can be applied to other embodiments, modifications, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present application.

[0029] Those skilled in the art should understand that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0030] The present application is a mop unit lifting device, comprising: a mop unit 1 for rotating cleaning, in this case two are arranged left and right, and are arranged in a substantially symmetrical manner; a lifting mechanism for lifting the mop unit 1; a driving mechanism for driving the mop unit 1 to rotate; the driving mechanism adopts a first driving mechanism that does not lift together with the mop unit 1, the lifting mechanism is integrally arranged with the mop unit 1 or separately arranged, or the driving mechanism adopts a second driving mechanism that lifts together with the mop unit 1, but the lifting mechanism is separately arranged with the mop unit 1.

[0031] The lifting mechanism is integrally arranged with the mop unit 1, and the telescopic end of the lifting mechanism is connected with the mop unit 1. The structure is suitable for the case that the lifting mechanism is integrally arranged with the mop unit 1. Alternatively, the lifting mechanism is separately arranged with the mop unit 1, and the lifting mechanism is provided with a lifting piece 2 which is connected with the mop unit 1. The lifting mechanism indirectly drives the mop unit 1 to lift through the lifting piece 2. The structure is suitable for the case that the lifting mechanism is separately arranged with the mop unit 1. In this example, the lifting mechanism is separately arranged with the mop unit 1.

[0032] The lifting mechanism can be a rack and pinion lifting mechanism, a screw lifting mechanism, a cam lifting mechanism, a swing rod lifting mechanism or an electromagnetic lifting mechanism. The swing rod lifting mechanism can be a yoke lifting mechanism. The yoke lifting mechanism can be driven to lift by the yoke. The electromagnetic lifting mechanism can be an electromagnetic valve lifting mechanism or an electromagnet lifting mechanism. The electromagnetic valve lifting mechanism can be driven to lift by the valve core of the electromagnetic valve. The electromagnet lifting mechanism can be driven to lift by the attraction function of the electromagnet. For example, an iron piece is arranged at the upper end of the mop unit 1, and an electromagnet is arranged above the iron piece. When the electromagnet is electrified, the iron piece is attracted, and the mop unit 1 is lifted. When the electromagnet is de-energized, the attraction disappears, and the mop unit 1 is lowered. In this example, the screw lifting mechanism is adopted.

[0033] The screw lifting mechanism is separately arranged with the mop unit 1. The screw lifting mechanism is provided with a lifting piece 2 which is connected with the mop unit 1. The screw lifting mechanism indirectly drives the mop unit 1 to lift through the lifting piece 2. The structure is suitable for the case that the lifting mechanism is separately arranged with the mop unit 1.

[0034] The lifting piece 2 is a cross beam. The cross beam is connected with each mop unit 1. A driving part of the lifting mechanism is arranged between each mop unit 1. The driving part is used to drive the cross beam to lift.

[0035] In this example, two mop units 1 are arranged. The cross beam can be a strip-shaped cross beam. The two ends of the cross beam are respectively connected with one mop unit 1. A screw rod 17 is arranged between the two mop units 1. The screw rod 17 is threadedly connected with the cross beam. The screw rod 17 is rotated to drive the cross beam to lift. The screw rod 17 is located at the middle part of the cross beam. In this example, in order to control the height, the part between the two ends of the cross beam is designed to be sunken.

[0036] The mop unit 1 comprises a mop, a rotating disc and a rotating shaft. The mop is connected with the rotating disc. The rotating shaft is connected with the rotating disc. The rotating shaft is used to lift the rotating disc and also used to drive the rotating disc to rotate.

[0037] The rotating shaft comprises an inner shaft 4 and an outer shaft 3, the inner shaft 4 is sleeved with the outer shaft 3, and a limiting structure for allowing the inner shaft 4 and the outer shaft 3 to move axially relative to each other but limiting the circumferential movement is arranged between the inner shaft 4 and the outer shaft 3, the outer shaft 3 is rotated to drive the inner shaft 4 to rotate synchronously through the limiting structure, the inner shaft 4 is connected with the rotating disc, and the inner shaft 4 is used to drive the rotating disc to lift and rotate together, or the inner shaft 4 is rotated to drive the outer shaft 3 to rotate synchronously through the limiting structure, the outer shaft 3 is connected with the rotating disc, and the outer shaft 3 is used to drive the rotating disc to lift and rotate together.

[0038] In the example, the outer shaft 3 is in transmission connection with the first driving mechanism, the outer shaft 3 is rotated to drive the inner shaft 4 to rotate synchronously through the limiting structure, the limiting structure is provided with a connecting part 6, the connecting part 6 is connected with the lifting mechanism, the lifting mechanism is arranged separately from the mop unit 1, and the lifting mechanism drives the inner shaft 4 to move along the axial direction relative to the outer shaft 3 through the connecting part 6.

[0039] The screw lifting mechanism used in the example comprises a second motor 12, a second worm 13, a second turbine 9 and a screw rod 17, the second worm 13 is connected with the second motor 12, the second worm 13 is connected with the second turbine 9, the second turbine 9 is connected with the screw rod 17, the screw rod 17 is in threaded connection with the lifting piece 2, and the rotation of the second motor 12 drives the screw rod 17 to rotate through worm transmission, and the rotation of the screw rod 17 realizes the lifting of the lifting piece 2.

[0040] The two ends of the lifting piece 2 are respectively sleeved with the outer shaft 3 and can move up and down relative to the outer shaft 3, in the example, the connecting part 6 adopts a horizontal rod arranged in the circumferential direction of the inner shaft 4, the horizontal rod passes through a matching groove 15 arranged on the outer shaft 3, the horizontal rod can move up and down along the matching groove 15, in order to bear force more evenly, two horizontal rods are uniformly distributed in the circumferential direction, the lifting piece 2 drives the inner shaft 4 upward through the horizontal rod, and the inner shaft 4 moves upward relative to the outer shaft 3, conversely, when the lifting piece 2 is lowered, the inner shaft 4 moves downward relative to the outer shaft 3.

[0041] The horizontal rod simultaneously serves as a circumferential transmission component, that is, when the outer shaft 3 rotates, the horizontal rod is driven to rotate through the matching groove 15, the horizontal rod drives the inner shaft 4 to rotate, and the inner shaft 4 drives the rotating disc to rotate, and further drives the mop to rotate.

[0042] The first driving mechanism used in the example comprises a first motor 10, a first worm 11 and a first turbine 8, the first motor 10 adopts a double-output motor, two rotating ends of the double-output motor are respectively connected with a first worm 11, correspondingly, the first turbine 8 also has two, the first motor 10 drives the shaft on which the first turbine 8 is arranged to rotate through worm transmission, the shaft on which the first turbine 8 is arranged drives the gear 7 connected with the outer shaft 3 to rotate through gear transmission, so that one first motor 10 drives the outer shaft 3 of two mop units 1 to rotate. The foregoing structure is greatly conducive to compact structure and reducing the space occupied by the cleaning machine, so that the foregoing structure is more suitable for a cleaning machine such as a sweeping robot which has certain requirements on space occupation.

[0043] Also included is a resilient member 16, for the case of the inner shaft 4 being connected to the rotating disc, the resilient member 16 is used to elastically support the inner shaft 4 or / and the rotating disc downward, for the case of the outer shaft 3 being connected to the rotating disc, the resilient member 16 is used to elastically support the outer shaft 3 or / and the rotating disc downward. In this example, the case of the inner shaft 4 being connected to the rotating disc is adopted.

[0044] The resilient member 16 is a compression spring, which is arranged between the upper end of the inner shaft 4 and the upper end of the outer shaft 3, and the structure is very compact, while the outer shaft 3 is arranged between the two bearings 5 connected to the upper and lower ends of the outer shaft 3.

[0045] When the lifting member 2 is lifted, the inner shaft 4 is lifted, and the compression spring is compressed, when the lifting member 2 is lowered, the compression spring elastically supports the inner shaft 4 downward, in this example, in order to make the mop better fit the cleaned surface, therefore when the mop fits the cleaned surface, the compression spring is set to still be in the compressed state, thus realizing self-adaptive cleaning of uneven cleaned surfaces, and having a certain pressure during cleaning, the cleaning effect is better.

[0046] Also included is a position detection mechanism, which is used to control the lifting position of the mop unit 1, such as setting a code disc for position detection for the second motor 12, detecting the position of the rotation of the second motor 12 through the code disc, thereby controlling the lifting position of the mop unit 1, such design can avoid the abnormality of the lifting function caused by power failure, program running error, etc., when an accident occurs, as long as the code disc is detected to be zero, the control part can know that the mop unit 1 has returned to the initial position, thus the second motor 12 can stop working in time, and the problem of having arrived at the position but still rotating will not occur, thus significantly improving the reliability of the lifting function.

[0047] In this example, the overall layout of the mop unit lifting device is that the two mop units 1 are arranged left and right, the lifting member 2 is located between the two shaft centers of the two mop units 1, the first driving mechanism is located at the front side of the lifting member 2, the first motor 10 is centrally arranged, the screw lifting mechanism is located at the rear side of the lifting member 2, the screw rod 17 is centrally arranged, and in order to make the lifting member 2 lift stably, a guide rod 14 is also arranged. The foregoing overall layout structure is compact, the overall height is low, and the height space is saved, while in terms of performance, the lifting function can be well realized, and the lifting action is stable, accurate, and stable and reliable in performance.

[0048] A cleaning machine is provided with the mop unit lifting device, that is, the mop unit lifting device is installed in the housing of the cleaning machine, and the motor and the code disc are connected to the control part of the cleaning machine for control.

[0049] The working principle of the present application can refer to the following: when the mop unit 1 needs to be lifted, the first motor 10 remains in a stopped state, the second motor 12 rotates to lift the lifting piece 2, the lifting piece 2 lifts the inner shaft 4, so that the mop unit 1 is lifted, and vice versa. When it is lowered to the position, the first motor 10 is restarted, and the cleaning can continue.

[0050] The present application realizes direct lifting of the mop unit 1 through ingenious design, overcomes the problem of heavy weight at the lifting position, and has the advantages of simple and compact structure, good durability, stability and reliability, low cost, strong practicability, and the ability to promote the upgrading of the mop unit lifting function, so that the cleaning machine is better used.

[0051] The above is an example of the present application, but it cannot be understood as a limitation on the claims. The present application is not limited to the above embodiments, and the specific structure can be changed. Any changes made within the scope of the independent claims of the present application are within the scope of the present application.

Claims

1. A mopping cloth unit lifting device comprising a mopping cloth unit, characterized by, Also comprising: A lifting mechanism for lifting the mop unit; A driving mechanism for driving the mop unit to rotate; The driving mechanism adopts a first driving mechanism that does not lift together with the mop unit; The lifting mechanism is separately arranged from the mop unit, and is provided with a lifting piece that can move up and down, the lifting piece is connected with the rotating shaft of the mop unit, and the lifting mechanism indirectly drives the rotating shaft to lift through the lifting piece; The lifting piece adopts a crossbeam piece, the crossbeam piece is connected with each mop unit, and a driving part of the lifting mechanism is arranged between each mop unit, the driving part is used to drive the crossbeam piece to lift; The mop unit is provided with two, the crossbeam piece is provided as a strip-shaped crossbeam piece, two ends of the crossbeam piece are respectively connected with one mop unit, and the part between the two ends of the crossbeam piece is connected with the driving part of the lifting mechanism; A first motor is arranged on the front side or the rear side of the crossbeam piece as the first driving mechanism, the first motor adopts a double-output motor, and the two rotating ends of the double-output motor are used to simultaneously drive the outer shafts of the two mop units to rotate; The mop unit comprises a mop, a rotating disc and a rotating shaft, the mop is connected with the rotating disc, the rotating shaft is connected with the rotating disc, and the rotating shaft is used to lift the rotating disc and simultaneously drive the rotating disc to rotate; The rotating shaft comprises an inner shaft and an outer shaft, the inner shaft is sleeved with the outer shaft, a limiting structure that can enable the inner shaft and the outer shaft to axially move relative to each other but is circumferentially limited is arranged between the inner shaft and the outer shaft, the outer shaft rotates to drive the inner shaft to synchronously rotate through the limiting structure, the inner shaft is connected with the rotating disc, and the inner shaft is used to drive the rotating disc to lift and rotate together; The connection of the lifting piece with the rotating shaft of the mop unit refers to the connection of the connecting part of the limiting structure with the lifting piece, and the lifting mechanism drives the inner shaft to move along the axial direction relative to the outer shaft through the connecting part.

2. The mop unit lifting device according to claim 1, wherein The lifting mechanism adopts a gear and rack lifting mechanism or a spiral lifting mechanism or a cam lifting mechanism or a swing rod lifting mechanism or an electromagnetic lifting mechanism.

3. The mop unit lifting device as claimed in claim 1, wherein The driving part is located in the middle part of the crossbeam piece.

4. The mop unit lifting device as claimed in claim 1, wherein The part between the two ends of the crossbeam piece is designed to be sunken.

5. The mop unit lifting device as claimed in claim 1, wherein The lifting piece is connected with a guide rod.

6. The mop unit lifting device as claimed in claim 1, wherein The two rotating ends are respectively connected with a first worm, correspondingly, the first turbine also has two, the first motor drives the first turbine to rotate through the worm transmission, and the first turbine drives the gear connected with the outer shaft to rotate through the gear transmission.

7. The mop unit lifting device as claimed in claim 1, wherein The connecting part adopts a transverse rod arranged in the circumferential direction of the inner shaft, the transverse rod passes through a matching groove arranged on the outer shaft, the transverse rod can move up and down along the matching groove, the lifting piece of the lifting mechanism drives the inner shaft to move upward relative to the outer shaft through the transverse rod, and when the lifting piece descends, the inner shaft moves downward relative to the outer shaft.

8. The mop unit lifting device as claimed in claim 7, wherein The transverse rod simultaneously serves as a circumferential transmission part, when the outer shaft rotates, the transverse rod rotates through the matching groove, the transverse rod drives the inner shaft to rotate, the inner shaft drives the rotating disc to rotate, and further drives the mop to rotate.

9. The mop unit lifting device according to claim 1 or 7 or 8, wherein Further comprising an elastic piece, the elastic piece is used to elastically support the inner shaft or / and the rotating disc downward.

10. The mop unit lifting device as claimed in claim 9, wherein The elastic piece adopts a compression spring, and the compression spring is arranged between the upper ends of the inner shaft and the outer shaft.

11. The mop unit lifting device as claimed in claim 10, wherein When the mop is attached to the cleaned surface, the compression spring is set to still be in a compressed state.

12. The mop unit lifting device as claimed in claim 1, wherein The lifting piece of the lifting mechanism is sleeved with the outer shaft and can move up and down relative to the outer shaft.

13. The mop unit lifting device as claimed in claim 1, wherein Further comprising a position detection mechanism, the position detection mechanism is used to control the lifting position of the mop unit.

14. A cleaning machine characterized by, The mop unit lifting device is provided with any one of claims 1 to 13.

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