A motor assembly for a rolling brush mechanism and a rolling brush mechanism

Abstract

The utility model discloses a motor assembly for rolling brush mechanism, including waterproof casing and motor body, waterproof casing includes cylinder and lid, and one end of cylinder is closed and is equipped with the threading hole, and the other end is equipped with the open mouth that supplies motor body and is loaded, and the lid is covered and is fixed in the inner chamber of cylinder with open mouth, and the side of motor body is equipped with ring platform, and the bottom end of lid inserts open mouth and is clamped with first sealing washer between ring platform, and the output shaft of motor body is from the through -hole of lid end surface and is equipped with second sealing washer and is clamped between output shaft and the inner wall of through -hole, and the threading hole is filled with wire harness sealing washer and forms the sealed threading channel of power line sealing and connects for the power line, and the waterproof structure of all aspects can protect motor to avoid the harm of liquid and short -circuit damage, to constitute the motor assembly that can work normally even if immersed in water and use, and the good waterproof performance of motor assembly is favorable to the cleaning of the position of rolling brush on the ground brush main body, and can be washed directly with water.

Description

Technical Field

[0001] This utility model belongs to the field of floor cleaning machines, specifically the roller brush mechanism of a floor cleaning machine and the motor assembly for the roller brush mechanism. Background Technology

[0002] Common floor cleaning machines include floor scrubbers, vacuum cleaners, and floor polishers, all of which use a roller brush located at the front of the brush to wipe the floor and pick up debris. To simplify the internal structure of the brush body, current technology places the motor that drives the roller brush inside the brush drum. However, since floor cleaning machines frequently clean surfaces containing liquids, the roller brush remains in a damp environment for extended periods, making waterproofing the motor particularly important. Furthermore, the area at the front of the brush body where the roller brush is located accumulates dirt over time. Due to the presence of the motor, the front of the brush body cannot be directly rinsed with water and must be manually cleaned, presenting a cleaning challenge. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a motor assembly for a roller brush mechanism and a roller brush mechanism.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A motor assembly for a roller brush mechanism includes a waterproof housing and a motor body disposed within the waterproof housing. The waterproof housing includes a cylindrical body and a cover. One end of the cylindrical body is closed and has a wire-passing hole, while the other end has an opening for inserting the motor body. The cover closes the opening and fixes the motor body within the inner cavity of the cylindrical body. The output shaft of the motor body passes through the waterproof housing. A ring platform is provided on the side of the motor body. The bottom end of the cover extends into the opening and is clamped between the ring platform and a first sealing ring. The output shaft passes through a through hole on the end face of the cover, and a second sealing ring is fitted on the output shaft and clamped between the output shaft and the inner wall of the through hole. A wire harness sealing ring is filled in the wire-passing hole. The wire harness sealing ring forms a sealed wire-passing channel for the sealed connection of the power supply wire. The first sealing ring is L-shaped and includes an axial sealing portion and a radial sealing portion. The axial sealing portion is clamped and sealed between the side wall of the cover and the side wall of the motor body. The radial sealing portion is clamped and sealed between the bottom of the cover and the ring platform, and the side wall of the radial sealing portion abuts and seals against the inner wall of the cylindrical body.

[0006] The end face of the cover is connected and fixed to the motor body by a screw, and a third sealing ring is provided on the through hole of the screw and clamped under the screw head.

[0007] The end face of the cover is provided with an annular groove corresponding to the through hole, and the third sealing ring is inserted into the annular groove.

[0008] The inner side of the second sealing ring is provided with an elastic sealing lip that fits tightly against the surface of the output shaft, and the outer side is provided with multiple stacked second sealing ribs that fit tightly against the inner wall of the through hole.

[0009] The first sealing ring has a first sealing rib arranged facing the inner wall of the waterproof housing, with both the axial sealing part and the radial sealing part facing it.

[0010] The surface of the wire harness sealing ring is provided with a third sealing rib.

[0011] A roller brush mechanism includes a roller brush cylinder and the aforementioned motor assembly. One end of the motor assembly is connected to a connecting bracket and is attached to one side of the floor brush body. The other end of the motor assembly has an output shaft extending out and is connected to a transmission head. One end of the roller brush cylinder is open to form a mounting cavity, and the mounting cavity is provided with a mating part that is adapted to fit the transmission head. The other end of the roller brush cylinder is provided with a locking component that can be locked to the other side of the floor brush body.

[0012] The connecting bracket is hinged to one side of the floor brush body, allowing the motor assembly to rotate outward relative to the floor brush body.

[0013] The waterproof housing and the connecting bracket are rotatably connected by a connecting column, and the connecting column has the threading hole formed inside.

[0014] The connecting bracket is fitted with a fourth sealing ring, which acts between the connecting bracket and the mounting cavity wall of the roller brush cylinder.

[0015] The beneficial effects of this utility model are as follows: This utility model provides a waterproof housing for the motor body, which has a comprehensive waterproof structure to protect the motor from short circuit damage caused by liquid. The motor body and the waterproof housing together form a motor assembly that can work normally even when immersed in water. The good waterproof performance is beneficial for cleaning the area where the roller brush is located on the floor brush body. It can be directly rinsed with water, solving the problem of difficult cleaning caused by the waterproofing of the motor in the past. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the roller brush mechanism of this utility model;

[0018] Figure 2 This is a disassembled schematic diagram of the roller brush mechanism of this utility model;

[0019] Figure 3 This is a disassembled schematic diagram of the motor assembly of this utility model;

[0020] Figure 4 yes Figure 3 A schematic diagram of another angle at point A in the middle;

[0021] Figure 5 This is a cross-sectional view of the roller brush mechanism of this utility model;

[0022] Figure 6 yes Figure 5 Enlarged view of point B in the image;

[0023] Figure 7 yes Figure 5 Enlarged view of point C in the image;

[0024] Figure 8 yes Figure 5 Enlarged view of point D in the image. Detailed Implementation

[0025] Reference Figures 1 to 8A roller brush mechanism includes a motor assembly and a roller brush cylinder 5. The outer surface of the roller brush cylinder 5 is covered with a cleaning cloth for cleaning. One end of the motor assembly is connected to a connecting bracket 3, which is hinged to one side of the floor brush body, allowing the motor assembly 5 to rotate outward relative to the floor brush body, facilitating the assembly and disassembly of the roller brush cylinder 5. The other end of the motor assembly has an output shaft 11 extending through it and connected to a transmission head 4. One end of the roller brush cylinder 5 is open to form a mounting cavity 51, which has a fitting part 511 that is adapted to and fits into the transmission head 4. The other end of the roller brush cylinder 5 has a locking component 6 that can be locked to the other side of the floor brush body. The roller brush mechanism is rotatably mounted on the front side of the floor brush by using the locking connection of the connecting bracket 3 and the locking component 6. The motor assembly includes a waterproof housing 2 and a motor body 1 disposed within the waterproof housing 2. The waterproof housing 2 includes a cylindrical body 21 and a cover 22. One end of the cylindrical body 21 is closed and has a wire hole 211, while the other end has an opening 212 for inserting the motor body 1. The cover 22 covers the opening 212 and fixes the motor body 1 inside the cylindrical body 21. The output shaft 11 of the motor body 1 passes through the waterproof housing 2. The side of the motor body 1 has a ring platform 12. The bottom end of the cover 22 extends into the opening 212 and is clamped between it and the ring platform 12 with a first sealing ring 61. The output shaft 11 passes through a through hole 221 on the end face of the cover 22, and a second sealing ring 62 is fitted on the output shaft 11 and clamped between the output shaft 11 and the inner wall of the through hole 221. A wire harness sealing ring 7 is filled in the wire hole 211. The wire harness sealing ring 7 forms a sealed wire passage 71 for the sealed connection of the power supply wire; the first sealing ring 61 is L-shaped and includes an axial sealing part 611 and a radial sealing part 612. The axial sealing part 611 is sandwiched and sealed between the side wall of the cover 22 and the side wall of the motor body 1, and the radial sealing part 612 is sandwiched and sealed between the bottom of the cover 22 and the ring platform 12. The first sealing ring 61, the second sealing ring 62 and the wire harness sealing ring 7 can bring good waterproof performance to the waterproof housing, and fully protect the internal motor body 1 from being damaged by liquid and short circuit. It forms a motor assembly that can be used normally even when immersed in water. The good waterproof performance is conducive to cleaning the area where the roller brush is located on the brush body. It can be directly rinsed with water, solving the problem of difficult cleaning caused by the waterproof problem of the motor in the past.

[0026] As a preferred embodiment of this utility model, the motor body 1 is fixed to the cover 22 by screws. Specifically, screws are passed through the end face of the cover 22 and connected and fixed to the motor body 1. A third sealing ring 63 is provided on the through hole 222 of the through screw and is clamped under the screw head to prevent water from entering the through hole 222. After the motor body 1 and the cover 22 are fixed, the first sealing ring 61 is clamped and fixed on the ring platform 12. Then, they are installed into the cylinder 21 and sealed by the radial sealing part 612. The fixed first sealing ring 61 can provide stable sealing performance. Similarly, in order to ensure the stable sealing performance of the third sealing ring, an annular groove 223 is provided on the end face of the cover 22 corresponding to the through hole 222. The third sealing ring 63 is installed in the annular groove 223 and the annular groove 223 stabilizes the installation position of the third sealing ring 63.

[0027] As a preferred embodiment, the inner side of the second sealing ring 62 is provided with an elastic sealing lip 621 that fits tightly against the surface of the output shaft 11. The elasticity of the sealing lip 621 ensures a tight seal at the rotating output shaft 11, while the outer side of the second sealing ring 62 has multiple stacked second sealing ribs 622 that fit tightly against the inner wall of the through hole 221, increasing the interference fit at the seal and resulting in better sealing performance. Preferably, the axial sealing portion 611 and the radial sealing portion 612 of the first sealing ring 61 are both arranged with first sealing ribs 613 facing the inner wall of the waterproof housing 2, also to increase the interference fit at the seal, resulting in stronger sealing performance and easier installation. Similarly, the surface of the wire harness sealing ring 7 is provided with stacked third sealing ribs 72, which serve the same function as the second sealing ribs 622 and the first sealing ribs 613.

[0028] As a preferred embodiment, the waterproof housing 2 and the connecting bracket 3 are rotatably connected by a connecting post 24, and a wire hole 211 is formed inside the connecting post 24. In addition, a fourth sealing ring 64 is fitted on the connecting bracket 3. The fourth sealing ring 64 acts between the connecting bracket 3 and the wall of the mounting cavity 51 of the roller brush cylinder 5, preventing water from entering through the opening of the mounting cavity 21 and accumulating inside the roller brush cylinder 5, thus preventing it from threatening the motor assembly.

Claims

1. A motor assembly for a roller brush mechanism, characterized in that: The device includes a waterproof housing (2) and a motor body (1) arranged in the waterproof housing (2). The waterproof housing (2) includes a cylindrical body (21) and a cover (22). One end of the cylindrical body (21) is closed and has a wire hole (211). The other end has an opening (212) for inserting the motor body (1). The cover (22) covers the opening (212) and fixes the motor body (1) in the inner cavity of the cylindrical body (21). The output shaft (11) of the motor body (1) passes through the waterproof housing (2). The side of the motor body (1) is provided with a ring platform (12). The bottom end of the cover (22) extends into the opening (212) and is clamped between the cover (22) and the ring platform (12). The output shaft (11) extends from the end face of the cover (22). A through hole (221) is passed through and a second sealing ring (62) is fitted on the output shaft (11) and sandwiched between the output shaft (11) and the inner wall of the through hole (221). The wire harness sealing ring (7) is filled in the wire hole (211). The wire harness sealing ring (7) forms a sealed wire passage (71) for the sealing connection of the power supply line. The first sealing ring (61) is L-shaped and includes an axial sealing part (611) and a radial sealing part (612). The axial sealing part (611) is sandwiched and sealed between the side wall of the cover (22) and the side wall of the motor body (1). The radial sealing part (612) is sandwiched and sealed between the bottom of the cover (22) and the ring platform (12), and the side wall of the radial sealing part (612) abuts and seals against the inner wall of the cylinder (21).

2. The motor assembly according to claim 1, characterized in that: The end face of the cover (22) is connected to the motor body (1) by a screw, and a third sealing ring (63) is provided on the through hole (222) of the through screw and clamped under the screw cap.

3. The motor assembly according to claim 2, characterized in that: The end face of the cover (22) is provided with an annular groove (223) corresponding to the through hole (222), and the third sealing ring (63) is inserted into the annular groove (223).

4. The motor assembly according to claim 1, characterized in that: The second sealing ring (62) has an elastic sealing lip (621) on its inner side that is in close contact with the surface of the output shaft (11), and multiple second sealing ribs (622) arranged in layers on its outer side that are in close contact with the inner wall of the through hole (221).

5. The motor assembly according to claim 1, characterized in that: The first sealing ring (61) has a first sealing rib (613) arranged on both the axial sealing part (611) and the radial sealing part (612) facing the inner wall of the waterproof shell (2).

6. The motor assembly according to claim 1, characterized in that: The surface of the wire harness sealing ring (7) is provided with a third sealing rib (72).

7. A roller brush mechanism, characterized in that: The brush assembly includes a roller brush cylinder (5) and a motor assembly as described in any one of claims 1 to 6. One end of the motor assembly is connected to a connecting bracket (3) and connected to one side of the brush body. The other end of the motor assembly has an output shaft (11) and is connected to a transmission head (4). One end of the roller brush cylinder (5) is open to form a mounting cavity (51). The mounting cavity (51) is provided with a connecting part (511) that is adapted to fit the transmission head (4). The other end of the roller brush cylinder (5) is provided with a locking component (6) that can be locked to the other side of the brush body.

8. The roller brush mechanism according to claim 7, characterized in that: The connecting bracket (3) is hinged to one side of the brush body, allowing the motor assembly to rotate outward relative to the brush body.

9. The roller brush mechanism according to claim 7, characterized in that: The waterproof housing (2) and the connecting bracket (3) are rotatably connected by a connecting column (24), and the connecting column (24) has the thread hole (211).

10. The roller brush mechanism according to claim 7, characterized in that: The connecting bracket (3) is fitted with a fourth sealing ring (64), which acts between the connecting bracket (3) and the wall of the mounting cavity (51) of the roller brush cylinder (5).

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