Power steering mechanism for handheld floor cleaning machine

Abstract

A power steering mechanism for a handheld floor cleaning machine, relating to the technical field of floor cleaning machines. The power steering mechanism comprises a connecting frame (1) and a hinge support base (2); the connecting frame (1) is hingedly mounted on the hinge support base (2) by means of a pin shaft; a rotating shaft plate (3) is fixed at the bottom end of the hinge support base (2); an inductive magnet (4) is fixedly mounted on the lower surface of the rotating shaft plate (3); a rotating shaft (5) is further fixed at the center of the lower surface of the rotating shaft plate (3); the bottom end of the rotating shaft (5) is rotatably mounted inside a bearing seat (6); a magnetic control mounting plate (7) is further fixedly sleeved on the outer wall of the bearing seat (6); a left magnetic switch (8) and a right magnetic switch (9) are provided on the upper surface of the magnetic control mounting plate (7); the left magnetic switch (8) and the right magnetic switch (9) are respectively provided on two sides of the inductive magnet (4); and a bushing (10) is fixed onto the outer circumferential wall of the magnetic control mounting plate (7). The power steering mechanism can help users reduce physical effort for steering, thereby improving user experience, and can also change and adjust the sensitivity and response speed of power steering.

Description

A power steering mechanism for a handheld floor scrubber Technical Field

[0001] This invention relates to the field of floor scrubber technology, specifically to a power steering mechanism for a handheld floor scrubber. Background Technology

[0002] As people's living standards improve and living spaces become larger, handheld floor scrubbers have become a common cleaning tool in large apartments, villas, hotels, and guesthouses. Compared to traditional cleaning methods, handheld floor scrubbers are more efficient and save time and effort.

[0003] Handheld floor scrubbers mainly consist of a handle, chassis, steering mechanism, brush, suction cup, water collection tank, and battery pack. The handle is used to control the movement and working status of the scrubber. The chassis supports the main components of the scrubber. The steering mechanism changes the direction of travel. The brush, when rotating, brushes away dirt from the floor while simultaneously grinding and polishing it. The suction cup sucks up wastewater and cleaning fluid from the surface into the water collection tank, which is usually equipped with a suction power adjuster. The water collection tank collects the dirty water and cleaning fluid from the suction cup. The battery pack provides the power source for the entire scrubber, ensuring a stable power supply. As can be seen, the steering mechanism is an indispensable component of a handheld floor scrubber. However, existing steering mechanisms require manual steering, which is laborious, difficult, and results in a poor user experience. Summary of the Invention

[0004] The purpose of this invention is to provide a power steering mechanism for a handheld floor scrubber to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power steering mechanism for a handheld floor scrubber, comprising a connecting frame and a hinge support. The connecting frame is hinged to the hinge support via a pin. A rotating shaft plate is fixed to the bottom end of the hinge support. An induction magnet is fixedly installed on the lower surface of the rotating shaft plate. A rotating shaft rod is also fixed at the center of the lower surface of the rotating shaft plate. The bottom end of the rotating shaft rod is rotatably installed inside a bearing seat. A magnetic control mounting plate is fixedly sleeved on the outer wall of the bearing seat. A left magnetic control switch and a right magnetic control switch are provided on the upper surface of the magnetic control mounting plate, and the left and right magnetic control switches are respectively located on both sides of the induction magnet. A bushing is fixed to the circumferential outer wall of the magnetic control mounting plate.

[0006] As a further improvement to the above solution, the upper surface of the magnetic mounting plate is also provided with a pair of arc-shaped holes. A slide block is slidably installed inside each of the pair of arc-shaped holes. The top of the two slide blocks are respectively fixedly installed with the left magnetic switch and the right magnetic switch. The bottom of the two slide blocks are hinged with connecting rods. The two connecting rods are hinged together on the movable seat. The movable seat is slidably installed on the lower surface of the magnetic mounting plate via a slide rail. The movable seat is internally threaded with a screw. The drive end of the screw is connected to a reducer. The drive end of the reducer is connected to a motor.

[0007] As a further improvement to the above solution, the center of the circle containing the pair of arc-shaped holes coincides with the center of the magnetic mounting plate, and the shape and size of the pair of arc-shaped holes are the same.

[0008] As a further improvement to the above solution, both the left and right magnetic control switches are matched with the induction magnet, and both the left and right magnetic control switches are located on the circular motion path of the induction magnet.

[0009] As a further improvement to the above solution, the connecting frame is provided with a connecting shaft hole, and a reinforcing block is integrally formed inside the connecting frame.

[0010] As a further improvement to the above solution, the outer wall of the bearing housing is integrally formed with a pair of fixing ears, which are fixed to the main body of the handheld floor scrubber by screws. The bottom of the main body of the handheld floor scrubber is also provided with a left brush plate and a right brush plate, and cleaning brushes are fixed to the outer walls of the left brush plate and the right brush plate.

[0011] As a further improvement to the above solution, the handheld floor scrubber is also equipped with a central controller inside its main body. The signal input terminals of the central controller are respectively connected to the left magnetic switch and the right magnetic switch.

[0012] As a further improvement to the above solution, the outer wall of the handheld floor scrubber body is also provided with a charging interface, and a pair of auxiliary rods are fixed on the top of the handheld floor scrubber body, with auxiliary wheels rotatably mounted on the pair of auxiliary rods.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention features an induction magnet fixedly mounted on the lower surface of a rotating shaft plate. A left and right magnetic control switch are positioned on the upper surface of the magnetic control mounting plate, respectively located on either side of the induction magnet. After the connecting bracket is fixedly connected to the handle, rotating the handle clockwise or counterclockwise will cause the rotating shaft plate to rotate clockwise or counterclockwise. This rotation of the rotating shaft plate, in turn, causes the induction magnet to rotate. When the distance between the induction magnet and the left or right magnetic control switch gradually approaches the response distance, the left or right magnetic control switch is activated, triggering a signal that is transmitted to the central controller. The central controller further adjusts the rotation speed of the left and right brush discs, creating a speed difference to achieve steering. This helps users save steering effort and improves the user experience. In addition to controlling the forward and reverse rotation of the motor, the screw and the movable seat are connected by a thread, which in turn drives the movable seat to move forward or backward along the slide rail. Two connecting rods are hinged on the movable seat, and the other ends of the two connecting rods are respectively hinged to the bottom of the two slides, so that the two slides can slide synchronously along the arc-shaped hole. The sliding directions of the two slides are opposite. The top of the two slides are respectively fixedly installed with a left magnetic control switch and a right magnetic control switch. Therefore, the included angle formed between the left magnetic control switch, the right magnetic control switch and the center of the magnetic control mounting plate can be flexibly adjusted. That is, when the rotating shaft plate drives the induction magnet to rotate, the left magnetic control switch and the right magnetic control switch can be triggered by adjusting the rotation angle of the induction magnet. This changes the sensitivity and response speed of the power steering. The structure is ingeniously designed and highly practical. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the structure of the present invention from a first perspective.

[0017] Figure 2 is a schematic diagram of the second perspective structure of the present invention;

[0018] Figure 3 is a schematic diagram of the third-view structure of the present invention;

[0019] Figure 4 is a schematic diagram of the structure after the bushing is removed in this invention;

[0020] Figure 5 is a top-view structural diagram of the magnetic mounting plate in this invention;

[0021] Figure 6 is a schematic diagram of the structure of the present invention after it is installed in a handheld floor scrubber;

[0022] Figure 7 is a top view cross-sectional structural diagram of the handheld floor scrubber of the present invention;

[0023] Figure 8 is a right view of the handheld floor scrubber of the present invention.

[0024] In the diagram: 1-Connecting frame; 2-Hinge support; 3-Spindle plate; 4-Induction magnet; 5-Spindle rod; 6-Bearing seat; 7-Magnetic control mounting plate; 8-Left magnetic control switch; 9-Right magnetic control switch; 10-Bushing; 11-Arc-shaped hole; 12-Slide seat; 13-Connecting rod; 14-Moving seat; 15-Slide rail; 16-Screw; 17-Reducer; 18-Motor; 19-Connecting shaft hole; 20-Reinforcing block; 21-Fixing ear; 22-Handheld floor scrubber body; 23-Left brush plate; 24-Right brush plate; 25-Cleaning brush; 26-Central controller; 27-Charging interface; 28-Auxiliary rod. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Example 1: A power steering mechanism for a handheld floor scrubber, as shown in Figures 1, 2, and 3, includes a connecting frame 1 and a hinge support 2. The connecting frame 1 has a connecting shaft hole 19 for fixed connection with an external handheld handle. A reinforcing block 20 is integrally formed inside the connecting frame 1, which improves the overall strength of the connecting frame 1. The connecting frame 1 is hinged to the hinge support 2 via a pin. A rotating shaft plate 3 is fixed to the bottom end of the hinge support 2. An induction magnet 4 is fixedly installed on the lower surface of the rotating shaft plate 3. A rotating shaft 5 is fixed at the center of the surface. The bottom end of the rotating shaft 5 is rotatably installed inside the bearing seat 6. A magnetic control mounting plate 7 is fixedly sleeved on the outer wall of the bearing seat 6. A left magnetic control switch 8 and a right magnetic control switch 9 are provided on the upper surface of the magnetic control mounting plate 7. The left magnetic control switch 8 and the right magnetic control switch 9 are respectively located on both sides of the induction magnet 4. The left magnetic control switch 8 and the right magnetic control switch 9 are both matched with the induction magnet 4. The left magnetic control switch 8 and the right magnetic control switch 9 are both located on the circumferential movement path of the induction magnet 4. A bushing 10 is fixed on the outer circumferential wall of the magnetic control mounting plate 7.

[0027] As shown in Figures 3, 6, 7, and 8, the outer wall of the bearing housing 6 is integrally formed with a pair of fixing ears 21. The pair of fixing ears 21 are fixed to the main body 22 of the handheld floor scrubber by screws. The bottom of the main body 22 of the handheld floor scrubber is also provided with a left brush plate 23 and a right brush plate 24. Cleaning brushes 25 are fixed to the outer walls of both the left brush plate 23 and the right brush plate 24. The interior of the main body 22 of the handheld floor scrubber is also provided with a central controller 26. The signal input terminals of the central controller 26 are respectively connected to the left magnetic switch 8 and the right magnetic switch 9, and the signal output terminals of the central controller 26 are respectively connected to the left brush plate 23 and the right magnetic switch 9. The right brush 24 is electrically connected. As a prior art, the central controller 26 can adjust the rotation speed of the left brush 23 and the right brush 24 by modulating the current through the PWM. The outer wall of the handheld floor scrubber body 22 is also provided with a charging interface 27. The charging interface 27 is provided to charge the handheld floor scrubber body 22. A pair of auxiliary rods 28 are fixed on the top of the handheld floor scrubber body 22, and auxiliary wheels are rotatably installed on the pair of auxiliary rods 28. The auxiliary rods 28 and auxiliary wheels are provided to facilitate the upright support or movement of the handheld floor scrubber body 22 after cleaning.

[0028] In Example 1, the connecting frame 1 is fixedly connected to the external hand handle. Since the connecting frame 1 is hinged to the hinge support 2 by a pin, and the bottom end of the hinge support 2 is fixed with a rotating shaft plate 3, rotating the handle clockwise or counterclockwise will drive the rotating shaft plate 3 to rotate clockwise or counterclockwise. The induction magnet 4 is fixed to the lower end of the rotating shaft plate 3. Rotating the rotating shaft plate 3 will drive the induction magnet 4 to rotate. When the distance between the induction magnet 4 and the left magnetic control switch 8 gradually approaches the response distance, the left magnetic control switch 8 can be activated into a trigger state. The trigger signal will be transmitted to the central controller 26. The central controller 26 can further adjust the rotation speed of the left brush disk 23 and the right brush disk 24. At this time, the rotation speed of the left brush disk 23 is less than that of the right brush disk 24, creating a certain speed difference, thereby achieving the function of turning left. Similarly, when the distance between the sensing magnet 4 and the right magnetic control switch 9 gradually approaches the response distance, the right magnetic control switch 9 can be activated into a trigger state. The trigger signal is transmitted to the central controller 26, which can further adjust the rotation speed of the left brush disk 23 and the right brush disk 24. At this time, the rotation speed of the left brush disk 23 is greater than that of the right brush disk 24, creating a certain speed difference, thereby achieving the function of turning right. In summary, this helps users save steering effort and improves the user experience.

[0029] Example 2: Based on Example 1, as shown in Figures 3, 4 and 5, the upper surface of the magnetic control mounting plate 7 is further provided with a pair of arc-shaped holes 11. Slide seats 12 are slidably installed inside each pair of arc-shaped holes 11. The top ends of the two slide seats 12 are respectively fixedly installed with a left magnetic control switch 8 and a right magnetic control switch 9. The bottom ends of the two slide seats 12 are hinged with connecting rods 13. The two connecting rods 13 are hinged together on a movable seat 14. The movable seat 14 is slidably installed on the lower surface of the magnetic control mounting plate 7 via a slide rail 15. A screw 16 is threaded inside the movable seat 14. The drive end of the screw 16 is connected to a reducer 17. The drive end of the reducer 17 is connected to a motor 18. The center of the circle containing the pair of arc-shaped holes 11 coincides with the center of the magnetic control mounting plate 7, and the shape and size of the pair of arc-shaped holes 11 are the same.

[0030] In Example 2, the forward and reverse rotation of the control motor 18 is reduced in speed by the reducer 17. Since the screw 16 and the movable seat 14 are connected by a thread, the movable seat 14 can be driven to move forward or backward along the slide rail 15. Two connecting rods 13 are hinged on the movable seat 14, and the other ends of the two connecting rods 13 are respectively hinged to the bottom ends of the two slides 12. Thus, the two slides 12 can be driven to slide synchronously along the arc-shaped hole 11, and the sliding directions of the two slides 12 are opposite. The top of the two slides 12 are respectively fixedly installed with a left magnetic control switch 8 and a right magnetic control switch 9. Therefore, the included angle formed between the left magnetic control switch 8, the right magnetic control switch 9 and the center of the magnetic control mounting plate 7 can be flexibly adjusted. That is, when the rotating shaft plate 3 drives the induction magnet 4 to rotate, the induction magnet 4 can be adjusted to trigger the left magnetic control switch 8 and the right magnetic control switch 9 at different rotation angles. Thus, the sensitivity and response speed of the power steering can be changed and adjusted. The structure is ingeniously designed and highly practical.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power steering mechanism for a handheld floor scrubber, comprising a connecting frame (1) and a hinge support (2), wherein the connecting frame (1) is hinged to the hinge support (2) via a pin, characterized in that: The bottom end of the hinge support (2) is fixed with a rotating shaft plate (3), and an induction magnet (4) is fixedly installed on the lower surface of the rotating shaft plate (3). A rotating shaft rod (5) is also fixed at the center of the lower surface of the rotating shaft plate (3). The bottom end of the rotating shaft rod (5) is rotatably installed inside the bearing seat (6). A magnetic control mounting plate (7) is also fixedly sleeved on the outer wall of the bearing seat (6). A left magnetic control switch (8) and a right magnetic control switch (9) are provided on the upper surface of the magnetic control mounting plate (7). The left magnetic control switch (8) and the right magnetic control switch (9) are respectively located on both sides of the induction magnet (4). A bushing (10) is fixed on the outer circumferential wall of the magnetic control mounting plate (7).

2. The power steering mechanism of a handheld floor scrubber according to claim 1, characterized in that: The upper surface of the magnetic control mounting plate (7) is also provided with a pair of arc-shaped holes (11). A slide block (12) is slidably installed inside the pair of arc-shaped holes (11). The top of the two slide blocks (12) is fixedly installed with the left magnetic control switch (8) and the right magnetic control switch (9). The bottom of the two slide blocks (12) is hinged with a connecting rod (13). The two connecting rods (13) are hinged together on the movable seat (14). The movable seat (14) is slidably installed on the lower surface of the magnetic control mounting plate (7) through the slide rail (15). The movable seat (14) is threaded with a screw (16). The drive end of the screw (16) is connected to a reducer (17). The drive end of the reducer (17) is connected to a motor (18).

3. The power steering mechanism of a handheld floor scrubber according to claim 2, characterized in that: The center of the circle containing the pair of arc-shaped holes (11) coincides with the center of the magnetic mounting plate (7), and the shape and size of the pair of arc-shaped holes (11) are the same.

4. The power steering mechanism of a handheld floor scrubber according to claim 1, characterized in that: The left magnetic control switch (8) and the right magnetic control switch (9) are both matched with the induction magnet (4), and the left magnetic control switch (8) and the right magnetic control switch (9) are both located on the circular motion path of the induction magnet (4).

5. The power steering mechanism of a handheld floor scrubber according to claim 1, characterized in that: The connecting frame (1) has a connecting shaft hole (19), and a reinforcing block (20) is integrally formed inside the connecting frame (1).

6. The power steering mechanism of a handheld floor scrubber according to claim 1, characterized in that: The outer wall of the bearing seat (6) is integrally formed with a pair of fixing ears (21). The pair of fixing ears (21) are fixed to the main body (22) of the handheld floor scrubber by screws. The bottom of the main body (22) of the handheld floor scrubber is also provided with a left brush plate (23) and a right brush plate (24). The outer walls of the left brush plate (23) and the right brush plate (24) are both fixed with cleaning brushes (25).

7. The power steering mechanism of a handheld floor scrubber according to claim 6, characterized in that: The handheld floor scrubber body (22) is also equipped with a central controller (26), and the signal input terminals of the central controller (26) are respectively connected to the left magnetic switch (8) and the right magnetic switch (9).

8. The power steering mechanism of a handheld floor scrubber according to claim 6, characterized in that: The outer wall of the handheld floor scrubber body (22) is also provided with a charging interface (27), and a pair of auxiliary rods (28) are fixed on the top of the handheld floor scrubber body (22), and auxiliary wheels are rotatably installed on the pair of auxiliary rods (28).

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