Mechanism capable of lifting, rotating and automatically loading and unloading mop of household sweeper

Abstract

The utility model discloses a mechanism capable of lifting, rotating and automatically loading and unloading mops of a household sweeper, which belongs to the technical field of cleaning equipment and comprises a left mop rotating motor, a right mop rotating motor, a mop rotating motor reduction gearbox and the mops respectively controlled by the left mop rotating motor and the right mop rotating motor. The mop rotating motor, the mop rotating motor reduction gearbox and the mop are connected with one another; the mop further comprises a left metal lifting shaft, a right metal lifting shaft and permanent magnets arranged on the mops, the left metal lifting shaft and the right metal lifting shaft are attracted through the permanent magnets fixed on the mops, the two mops are respectively controlled by one motor, the structure is independent, the two mops can work simultaneously or independently, control is facilitated, and the mop is convenient to use. The metal lifting shaft and the magnet embedded in the mop cloth are attracted, and the traditional mode of fixing through screws is abandoned.

Description

Technical Field

[0001] This utility model belongs to the field of cleaning equipment technology, specifically relating to a mechanism that enables the lifting, rotating, and self-loading / unloading of the mop cloth of a household sweeper. Background Technology

[0002] Currently, the rotary mops used in household sweeping robots on the market mainly fall into the following categories, each with its own obvious drawbacks:

[0003] 1. Rotary mop only:

[0004] Disadvantages: This type of mop can only rotate and cannot be raised or lowered. When the floor is carpeted, the inability to raise the mop can easily soil the carpet. The sweeper can also easily soil the floor that has already been mopped during its reciprocating motion. This type of mop, which cannot be raised, is not easy to cross steps or climb slopes.

[0005] 2. Rotatable and liftable mop:

[0006] Disadvantages: When the robot vacuum encounters a long-pile carpet, although the mop can be raised to a certain height, it generally does not exceed 10mm. This raised height will still soil the carpet, which cannot meet the needs of most users who do not want the mop to be on the carpet.

[0007] 3. Very few have mops that can be lifted and detached, but there is only one rotating support shaft. When the mops are lifted to the left and right, they will wobble and become unstable, which can easily cause one side to be higher than the other.

[0008] 4. The mop cannot be automatically loaded or unloaded:

[0009] Most mops are secured with screws at the end. When the mop is no longer needed, the screws often need to be removed manually with tools, which does not free up your hands. Utility Model Content

[0010] To achieve the above objectives, the technical solution of this utility model is as follows: A mechanism for realizing the lifting, rotating, and self-loading / unloading of the mop cloth in a household sweeping machine, comprising:

[0011] The left and right mop rotary motors, the mop rotary motor gearbox, and the mop controlled by the left and right mop rotary motors are connected to each other.

[0012] It also includes left and right metal lifting shafts and permanent magnets set on the mop. The left and right metal lifting shafts are attracted by the permanent magnets fixed on the mop.

[0013] As an improvement of this utility model, the gear on the output shaft of the mop rotary motor meshes with the gear set in the gearbox of the mop rotary motor.

[0014] As an improvement of this utility model, the left and right metal lifting shafts are set on the last D-shaped hole gear of the gear set of the mop lifting motor reducer. Through the D-shaped hole / shaft cooperation, the D-shaped hole gear drives the left and right metal lifting shafts to rotate. The ends of the left and right metal lifting shafts and the magnets embedded in the mop attract each other, and the hexagonal protrusions and grooves of the two fit together.

[0015] As an improvement of this utility model, the mechanism includes a mop lifting motor, a gear on the output shaft of the mop lifting motor meshing with a gear set of the mop lifting motor reduction gearbox, the gear set meshing with two gears respectively, the two gears rotating synchronously and in the same direction under the meshing of the same gear set, the two gears being assembled with a spiral shaft through a D-shaped hole / shaft fit, and the spiral shaft being driven to rotate by the gears.

[0016] As an improvement of this utility model, the mechanism includes a lifting frame, which is screwed together with two spiral shafts by means of threads. When the two spiral shafts rotate, the lifting frame moves up and down due to the two threaded engagement points.

[0017] As an improvement of this utility model, bearings are installed at both ends of the lifting frame, through which a metal lifting shaft passes. Shaft elastic retaining rings are installed on the upper end face of the bearings and the lower end face of the lifting frame, respectively.

[0018] As an improvement of this utility model, the installation and gearbox of the mop rotary motor and the structure of the motor and gearbox of the mop lifting motor are integrated into one unit, and the housings of the three motors are integrated into an upper housing and a lower housing, which are fixed with screws.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] The two mops are each controlled by a separate motor and are structurally independent. The two mops can work simultaneously or independently, which is beneficial for control.

[0021] The metal lifting shaft and the mop are attracted by embedded magnets, eliminating the traditional method of fixing with screws;

[0022] One motor drives two mops to rise and fall, allowing the mops to hover at any position and eventually detach.

[0023] The motor drives the mop to rotate slowly and descend, enabling the mop to install itself.

[0024] The design integrates the functions of mop rotation and lifting. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the mechanism described in this utility model;

[0026] Figure 2This is a schematic diagram of the installation of the metal lifting shaft and the mop according to this utility model;

[0027] Figure 3 This is a schematic diagram of the installation structure of the lifting frame described in this utility model;

[0028] Figure 4 This is a schematic diagram of the main box position structure described in this utility model;

[0029] Figure 5 This is a schematic diagram showing the installation position of the mop and mop tray described in this utility model;

[0030] Figure 6 This is a schematic diagram of the integrated shell structure described in this utility model.

[0031] List of reference numerals in the attached diagram: 1-Mop rotary motor, 2-Mop rotary motor gearbox, 3-Metal lifting shaft, 4-D-type hole gear, 5-Mop, 6-Mop lifting motor, 7-Mop lifting motor gearbox, 8-First gear, 9-Second gear, 10-First spiral shaft, 11-Second spiral shaft, 12-Lifting frame, 13-First elastic retaining ring, 14-Bearing, 15-Second elastic retaining ring, 16-Main box, 17-Hall sensor, 18-Mop tray, 19-Upper housing, 20-Lower housing. Detailed Implementation

[0032] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0033] Example: Figure 1 As shown, the gear on the output shaft of the mop rotary motor 1 meshes with the gear set in the mop rotary motor reduction gearbox 2. The metal lifting shaft 3 is mounted on the last D-shaped hole gear 4 of the gear set in the reduction gearbox. Through the D-shaped hole / shaft cooperation, the gear drives the lifting shaft to rotate. The end of the metal lifting shaft and the magnet embedded in the mop 5 attract each other. The hexagonal protrusions and grooves of the two fit together, so that the mop can rotate with the mop motor to achieve the purpose of mopping the floor. Figure 1 The components on both sides are identical and symmetrical in structure, with two mop motors driving two mops.

[0034] like Figure 2 As shown, the end of the metal lifting shaft 3 is a hexagonal protrusion, the upper surface of the mop 5 is a hexagonal groove, the mop is embedded with a permanent magnet, the permanent magnet and the metal lifting shaft are attracted together, and there are hexagonal mutual limiting and centrifugal force. When the mop rotates, it can be firmly attached to the lifting shaft.

[0035] In order to achieve the magnetic attraction needed to hold the lifting shaft, calculations are performed as follows:

[0036] 1. The attraction force of a magnet:

[0037] F1 = (B2*A) / (2μ0), where F1 represents the attraction force, B represents the magnetic induction intensity of the magnet, A represents the area of ​​the contact surface between the attracted object and the magnet, and μ0 represents the vacuum permeability.

[0038] 2. Rotational inertial force of the mop:

[0039] F2 = mra, where m represents the mass of the mop; r represents the radius of rotation of the mop; and a represents the angular acceleration of the mop. The formula for calculating a is:

[0040] a = 2πn / 60 / t, where n = rotational speed in revolutions per minute and t = acceleration time in seconds.

[0041] 3. Torque provided by the motor: F3 = Ti.

[0042] Where F3 represents the pulling force provided by the motor, T represents the torque of the motor, and i represents the reduction ratio of the gearbox.

[0043] Based on the above calculations and comparisons, it is necessary that both mops (F3≥2F1+F2) have permanent magnets to ensure that the mops can be firmly attached and can be pulled off when they need to be removed.

[0044] like Figure 1 As shown, the gear on the output shaft of the mop lifting motor 6 meshes with the gear set of the mop lifting motor reduction gearbox 7. The gear set meshes with the first gear 8 and the second gear 9 respectively. The first gear 8 and the second gear 9 can rotate synchronously and in the same direction under the meshing of the same gear set. The first gear 8 is assembled with the first spiral shaft 10 through a D-hole / shaft fit, and the first gear 8 drives the first spiral shaft 10 to rotate. The second gear 9 is assembled with the second spiral shaft 11 through a D-hole / shaft fit, and the second gear 9 drives the second spiral shaft 11 to rotate. The lifting frame 12 is screwed together with the first spiral shaft 10 and the second spiral shaft 11 by threads. Utilizing the principle of screws and nuts, when the first spiral shaft 10 and the second spiral shaft 11 rotate, because there are two threaded engagement points, the lifting frame 12 cannot rotate with them, but can only move up and down.

[0045] like Figure 3 As shown, bearings 14 are installed at both ends of the lifting frame 12, through which the metal lifting shaft 3 passes. A first elastic retaining ring 13 and a second elastic retaining ring 15 are respectively installed on the upper end face of the bearing and the lower end face of the lifting frame. This allows the metal lifting shaft to rotate but prevents it from moving up and down within the lifting frame, thanks to the limiting effect of the elastic retaining rings. When the lifting frame moves up and down, the metal lifting shaft moves along with it. The mop 5 is also attracted to the metal lifting shaft by embedded permanent magnets, thus enabling the lifting and lowering of the mop.

[0046] like Figure 4 As shown, the control of the mop lifting motor 6 is to rotate so that the mop 5 only rises to the bottom surface of the main box 16. The mop lifting motor then stops rotating and no longer rises. At this time, the mop stays on the bottom surface of the main box, thus achieving the lifting of the mop. The mop does not need to rotate during the lifting process.

[0047] After the mop rises to the bottom of the main box 16, the lifting frame 12 drives the lifting shaft 3 to continue rising. At this time, the main box has restricted the rise of the mop. The pulling force F3 provided by the lifting shaft overcomes the attraction force F1 of the permanent magnet on the mop, so that the mop can be detached.

[0048] Utilizing the principle that Hall sensors can detect magnetic materials, when the mop 5 is attracted to the metal lifting shaft 3 by a permanent magnet, the metal lifting shaft becomes magnetic, and the Hall sensor 17 detects the magnetism, indicating that the mop is attracted to the lifting shaft. Conversely, when the Hall sensor does not detect the magnetism, it means that the mop is not attracted to the lifting shaft and has detached.

[0049] 4. The mop lifting motor 6 drives two first spiral shafts 10 and second spiral shafts 11 through the mop lifting motor reduction gearbox 7. The two spiral shafts are then interconnected with the lifting frame 12 through threads, which is more stable and has less shaking than a conventional single spiral shaft.

[0050] The 5-speed gearbox has a self-locking worm gear structure, which can maintain a pressure of about 10N when the mop is pressed down on the ground, so that the mop can clean the floor more effectively and the mopping effect is better.

[0051] like Figure 5 As shown, the mop 5 of the sweeper is typically detached and placed on the mop tray 18 inside the base station. The tray has a groove for placing the mop, which limits the mop's movement and prevents it from shifting when it comes into contact with something. When the mop needs to be installed, the sweeper enters the base station and slowly rotates the metal lifting shaft 3, while simultaneously lowering the metal lifting shaft. Due to the attraction of the magnet, the hexagonal end of the lifting shaft automatically aligns with the hexagonal groove on the mop, achieving self-installation of the mop and reducing human intervention.

[0052] like Figure 6 As shown, the installation and gearbox of the mop rotary motor and the motor and gearbox of the mop lifting motor are structurally integrated, with the housings of the three motors combined into an upper housing 19 and a lower housing 20, which are fixed together with screws. This design can resolve the impact of hole position errors and assembly errors in the manufacturing of multiple parts, reduce the factors that generate more friction, and make the lifting shaft move more smoothly.

[0053] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A mechanism for lifting, rotating, and self-loading / unloading the mop pad of a household sweeping robot, characterized in that, include: The left and right mop rotary motors (1), the mop rotary motor gearbox (2) and the mop (5) controlled by the left and right mop rotary motors (1) are connected to each other. It also includes left and right metal lifting shafts (3) and permanent magnets set on the mop (5). The left and right metal lifting shafts (3) are attracted by the permanent magnets fixed on the mop (5).

2. The mechanism for lifting, rotating, and self-loading / unloading the mop pad of a household sweeping robot according to claim 1, characterized in that, The gear on the output shaft of the mop rotary motor (1) meshes with the gear set in the mop rotary motor gearbox (2).

3. The mechanism for lifting, rotating, and self-loading / unloading the mop pad of a household sweeping robot according to claim 1, characterized in that, The left and right metal lifting shafts (3) are set on the last D-type hole gear (4) of the gear set of the mop lifting motor reducer (7). Through the D-type hole / shaft cooperation, the D-type hole gear (4) drives the left and right metal lifting shafts (3) to rotate. The ends of the left and right metal lifting shafts (3) and the magnets embedded in the mop (5) attract each other, and the hexagonal protrusions and grooves of the two fit together.

4. The mechanism for lifting, rotating, and self-loading / unloading the mop pad of a household sweeping robot according to claim 1, characterized in that, The mechanism includes a mop lifting motor (6), a gear on the output shaft of the mop lifting motor (6) meshes with a gear set of the mop lifting motor reducer (7), the gear set meshes with two gears respectively, the two gears rotate synchronously and in the same direction under the meshing of the same gear set, the two gears are assembled with the spiral shaft through D-type hole / shaft cooperation, and the spiral shaft is driven to rotate by the gears.

5. The mechanism for realizing the lifting, rotating, and self-loading / unloading of the mop cloth in a household sweeping machine according to claim 1, characterized in that, The mechanism includes a lifting frame (12), which is screwed together with two spiral shafts by means of threads. When the two spiral shafts rotate, the lifting frame (12) moves up and down due to the two threaded mating points.

6. The mechanism for lifting, rotating, and self-loading / unloading the mop pad of a household sweeping robot according to claim 5, characterized in that, The lifting frame (12) is equipped with bearings (14) at both ends, through which a metal lifting shaft (3) passes. Shaft elastic retaining rings are installed on the upper end face of the bearing (14) and the lower end face of the lifting frame (12).

7. The mechanism for realizing the lifting, rotating, and self-loading / unloading of the mop cloth in a household sweeping machine according to claim 1, characterized in that, The installation and gearbox of the mop rotary motor and the installation and gearbox of the mop lifting motor are integrated into one unit. The housings of the three motors are integrated into an upper housing (19) and a lower housing (20), and the upper and lower housings are fixed with screws.

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