A multifunctional brush

Abstract

A multifunctional brush comprises a handle and a shell mounted on the front end of the handle, a motor is mounted in the shell, a control switch for controlling the rotation of the motor is mounted on the handle, a cleaning brush head is mounted on the front of the shell, the motor drives the cleaning brush head to rotate, a motor waterproof cover is mounted in the shell, the motor waterproof cover covers the outside of the motor, the shell comprises an upper shell and a lower shell which are detachable, the upper shell is provided with an upper heat dissipation hole, and the lower shell is provided with a lower heat dissipation hole. The multifunctional brush protects the motor through the motor waterproof cover in the shell, avoids the internal circuit of the motor from short circuit, electric leakage and other faults caused by damp, and the combined heat dissipation structure of the upper heat dissipation hole and the lower heat dissipation hole can quickly lead out the hot air generated during the operation of the motor, an air flow channel can be formed between the lower heat dissipation hole and the motor waterproof cover, external cold air can enter the air flow channel through the lower heat dissipation hole, and convection circulation is formed with the hot air generated by the motor, so that the motor is efficiently cooled.

Description

Technical Field

[0001] This utility model relates to a cleaning device, and more particularly to a multifunctional brush. Background Technology

[0002] In outdoor maintenance, cleaning hard surfaces (such as stone, cement, and asphalt) is a common and important task. Over time, these surfaces easily accumulate stubborn stains such as dust, mud, oil, and mold. Ordinary vacuum cleaners are insufficient for effective cleaning, as they primarily rely on negative pressure to remove loose debris. However, their cleaning ability is significantly limited when it comes to hardened or tightly adhered stains, failing to meet the deep cleaning needs of outdoor hard surfaces.

[0003] To address these issues, specialized cleaning devices for outdoor hard surfaces have gradually emerged on the market. These devices typically feature a roller brush that directly contacts the ground. Driven by a motor, the brush rotates at high speed, and through friction between the brush and the ground, combined with the wetting and dissolving effects of water or cleaning solution, stubborn stains are peeled off and removed. This significantly improves the cleaning efficiency and effectiveness of outdoor hard surfaces, leading to their widespread use in municipal sanitation, property cleaning, and commercial outdoor maintenance.

[0004] However, existing outdoor hard floor cleaners still suffer from significant waterproofing defects in actual use, severely impacting their lifespan and operational stability. The core driving component of the cleaner is the motor, which is in continuous contact with the water or cleaning solution used during operation. Some water may adhere to the motor surface or even penetrate the motor's interior due to the swaying of the brush and splashing from the ground. Currently, most mainstream cleaner motors lack effective waterproofing structures, relying solely on their basic sealing design, which is insufficient to prevent external moisture intrusion. Once water enters the motor, it can easily cause short circuits in the motor coils, bearing corrosion, and other malfunctions, leading to motor damage. This not only increases maintenance costs but may also interrupt cleaning operations, affecting work progress.

[0005] In conclusion, further improvements are needed to the existing multi-functional brush. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a multi-functional brush with better waterproof and heat dissipation effects for motors, in light of the above-mentioned existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a multi-functional brush, including a handle and a housing installed at the front end of the handle, a motor installed inside the housing, a control switch for controlling the rotation of the motor installed on the handle, a cleaning brush head installed at the front of the housing, and the motor driving the cleaning brush head to rotate, characterized in that: a waterproof cover for the motor is installed inside the housing, the waterproof cover for the motor covers the outside of the motor, the housing includes a detachable upper housing and a lower housing, the upper housing has an upper heat dissipation hole, and the lower housing has a lower heat dissipation hole.

[0008] Preferably, the upper housing includes a base and a top cover. The base is fixed to the lower housing, and the top cover is fixed to the base. The upper heat dissipation holes include a first heat dissipation hole on the base and a second heat dissipation hole on the top cover, and the first and second heat dissipation holes are staggered. The lower heat dissipation holes include an air inlet and an air outlet that are staggered. This arrangement, with the first and second heat dissipation holes staggered, prevents rainwater from directly entering the housing, thus improving the waterproof rating.

[0009] To further enhance the waterproof effect, the front side of the base has a groove, the first heat dissipation hole is located on the rear side of the groove, and the second heat dissipation hole is located on the top side of the groove.

[0010] To prevent water from remaining inside the outer casing, an upper drainage hole is provided at the bottom of the groove, and a lower drainage hole is provided at the bottom of the lower casing. This design allows water entering the casing through the upper drainage hole to flow away through the lower drainage hole.

[0011] To further enhance waterproofing, the base has a sealing groove around its perimeter, and the top cover has a downward-extending sealing edge that inserts into the sealing groove. This design prevents water from entering the upper housing through the gap between the base and the top cover.

[0012] The cleaning brush head can have various structures. Preferably, the cleaning brush head includes a brush head mounting shaft, a first brush head, and a second brush head. The motor drives the brush head mounting shaft to rotate via a transmission mechanism. The first and second brush heads are respectively mounted on both sides of the brush head mounting shaft. Knobs are installed at both ends of the brush head mounting shaft, and the first and second brush heads are mounted on the brush head mounting shaft via the knobs. The knob structure makes the installation and removal of the first and second brush heads very convenient, without the need for other tools.

[0013] In order to ensure that the cleaning brush head can reach the ground corresponding to the middle part of the brush head and leave no blind spots, the inner bristles of the first brush head are inclined towards the middle, and the inner bristles of the second brush head are inclined towards the middle.

[0014] To protect the transmission mechanism, it is housed within a protective casing.

[0015] To effectively dissipate heat from the motor, the lower heat dissipation hole includes staggered air inlets and outlets. This arrangement creates an airflow channel between the lower heat dissipation hole and the pre-reserved ventilation slots in the motor's waterproof cover. During operation, external cool air can enter through the air inlets of the lower heat dissipation hole, forming a convection circulation with the hot air generated by the motor, and then flowing out through the air outlets, achieving efficient cooling of the motor.

[0016] To enable water inlet control, a water inlet connector is installed on the lower housing, and a valve is installed on the water inlet connector.

[0017] Compared with existing technologies, the advantages of this utility model are as follows: This multi-functional brush protects the motor through a waterproof cover inside the outer shell, preventing short circuits and leakage caused by moisture in the motor's internal circuitry. This not only significantly improves the safety of the multi-functional brush in humid environments but also greatly expands its applicable scenarios, allowing users to operate it with confidence for various cleaning needs. In addition, the combined heat dissipation structure of upper and lower heat dissipation holes can quickly exhaust the hot air generated by the motor. An airflow channel can be formed between the lower heat dissipation hole and the motor waterproof cover. During operation, external cool air can enter the airflow channel through the lower heat dissipation hole, forming a convection circulation with the hot air generated by the motor, achieving efficient cooling of the motor. This bidirectional convection heat dissipation method ensures that the motor is always within a suitable operating temperature range, completely avoiding problems such as motor jamming and increased noise caused by local overheating, fundamentally slowing down the aging of the motor and extending the product's service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the multifunctional brush according to an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the multi-functional brush from another angle is shown.

[0020] Figure 3 This is a partial structural diagram of the multifunctional brush according to an embodiment of the present invention after the lower housing has been removed;

[0021] Figure 4 for Figure 1 An exploded view of the multi-functional brush shown.

[0022] Figure 5 for Figure 4 A further breakdown diagram based on the existing structure;

[0023] Figure 6 for Figure 1 A partial structural cross-sectional view of the multifunctional brush shown.

[0024] Figure 7 This is a schematic diagram of the upper housing base of an embodiment of the present utility model. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 7 As shown, the multi-functional brush of this embodiment includes a handle 1 and a housing 2 installed at the front end of the handle 1. A motor 3 is installed inside the housing 2, and a control switch 4 for controlling the rotation of the motor 3 is installed on the handle 1. A cleaning brush head 5 is installed at the front of the housing 2, and the motor 3 drives the cleaning brush head 5 to rotate. The above structure is the conventional structure of existing multi-functional brushes and will not be described in detail here.

[0027] In this embodiment, a motor waterproof cover 6 is installed inside the outer casing 2. The motor 3 is completely surrounded by the motor waterproof cover 6, which has a waterproof rating of IPX4. This prevents the internal circuit of the motor 3 from short-circuiting, leaking electricity, or other malfunctions due to moisture, thus improving the safety of the multi-functional brush in humid environments and expanding its applicable scenarios.

[0028] The outer casing 2 includes an upper casing 21 and a lower casing 22 that are detachable from each other. The upper casing 21 has an upper heat dissipation hole, and the lower casing 22 has a lower heat dissipation hole. The upper casing 21 includes a base 211 and an upper cover 212. The base 211 is fixed to the lower casing 22, and the upper cover 212 is fixed to the base 211.

[0029] The upper heat dissipation holes include a first heat dissipation hole 213 and a second heat dissipation hole 214. The first heat dissipation hole 213 is located on the base 211, and the second heat dissipation hole 214 is located on the upper cover 212. The first heat dissipation hole 213 and the second heat dissipation hole 214 are staggered. Specifically, the front side of the base 211 has a groove 215. The first heat dissipation hole 213 is located on the rear side of the groove 215, and the second heat dissipation hole 214 is located above the groove 215, thereby preventing rainwater from directly entering the interior of the outer shell 2, improving the waterproof rating, and achieving IPX4 waterproof rating.

[0030] An upper drain hole 216 is provided at the bottom of the groove 215, and a lower drain hole 221 is provided at the bottom of the lower housing 22. The upper drain hole 216 is connected to the internal cavity of the housing 2. When external water enters the interior of the housing 2 through the upper drain hole 216, it can flow out through the lower drain hole 221, thus preventing water from remaining inside the housing 2.

[0031] In addition, to improve the waterproof rating of the upper housing 21, in this embodiment, the base 211 has a sealing groove 217 around its periphery, and the upper cover 212 has a downwardly extending sealing edge 218 around its periphery, which is inserted into the sealing groove 217. Thus, the base 211 and the upper cover 212 achieve a wall-like seal, preventing external water from entering the interior of the upper housing 21 through the gap between the base 211 and the upper cover 212.

[0032] The lower heat dissipation hole mainly serves to dissipate heat from the motor 3. In this embodiment, the lower heat dissipation hole includes an air inlet 222 and an air outlet 223 that are staggered from each other. The lower heat dissipation hole and the reserved ventilation slot of the motor waterproof cover 6 form an airflow channel. During operation, external cold air can enter the airflow channel through the air inlet 222 of the lower heat dissipation hole, form a convection circulation with the hot air generated by the motor 3, and flow out from the air outlet 223 of the lower heat dissipation hole, thereby achieving efficient heat dissipation of the motor 3.

[0033] The mounting structure of the cleaning brush head 5 in this embodiment is as follows:

[0034] The cleaning brush head 5 includes a brush head mounting shaft 50, a first brush head 51, and a second brush head 52. The motor 3 drives the brush head mounting shaft 50 to rotate through the transmission mechanism 7. The first brush head 51 and the second brush head 52 are respectively mounted on both sides of the brush head mounting shaft 50. Knobs 53 are installed at both ends of the brush head mounting shaft 50. The first brush head 51 and the second brush head 52 are mounted on the brush head mounting shaft 50 through the knobs 53. The knob-type disassembly and assembly do not require tools and are very convenient to operate.

[0035] In this embodiment, the cleaning brush head 5 is detachably connected to the transmission mechanism 7, facilitating the installation and removal of the cleaning brush head 5. Additionally, the protective cover 8 encloses the transmission mechanism 7, protecting it from water and contaminants that could enter and affect its normal operation, or even damage it. The transmission mechanism 7 typically employs a gear transmission assembly, a conventional structure that will not be described further here.

[0036] The cleaning brush head in this embodiment uses two independent brush heads. The ground between the two brush heads is often difficult to clean, resulting in cleaning dead spots. In this embodiment, the inner bristles 54 of the first brush head 51 and the inner bristles 54 of the second brush head 52 are inclined towards the middle, which can easily clean the aforementioned cleaning dead spots.

[0037] In addition, in order to control the water intake, a water inlet connector 9 is installed on the lower housing 22 of the multifunctional brush in this embodiment. A valve 10 is installed on the water inlet connector 9. Water enters when the valve 10 is opened and stops when the valve 10 is closed.

Claims

1. A multifunctional brush, comprising a handle (1) and a housing (2) mounted on the front end of the handle (1), wherein a motor (3) is installed inside the housing (2), a control switch (4) for controlling the rotation of the motor (3) is mounted on the handle (1), and a cleaning brush head (5) is mounted on the front part of the housing (2), wherein the motor (3) drives the cleaning brush head (5) to rotate, characterized in that: The outer casing (2) is equipped with a motor waterproof cover (6), which covers the outside of the motor (3). The outer casing (2) includes an upper shell (21) and a lower shell (22) that are detachable from each other. The upper shell (21) has an upper heat dissipation hole, and the lower shell (22) has a lower heat dissipation hole.

2. The multifunctional brush according to claim 1, characterized in that: The upper housing (21) includes a base (211) and an upper cover (212). The base (211) is fixed on the lower housing (22), and the upper cover (212) is fixed on the base (211). The upper heat dissipation hole includes a first heat dissipation hole (213) on the base (211) and a second heat dissipation hole (214) on the upper cover (212). The first heat dissipation hole (213) and the second heat dissipation hole (214) are staggered from each other.

3. The multifunctional brush according to claim 2, characterized in that: The base (211) has a groove (215) on its front side, the first heat dissipation hole (213) is located on the rear side of the groove (215), and the second heat dissipation hole (214) is located above the groove (215).

4. The multifunctional brush according to claim 3, characterized in that: The bottom of the groove (215) has an upper drainage hole (216), and the bottom of the lower housing (22) has a lower drainage hole (221).

5. The multifunctional brush according to claim 2, characterized in that: The base (211) has a sealing groove (217) around its periphery, and the upper cover (212) has a sealing edge (218) extending downward around its periphery, the sealing edge (218) being inserted into the sealing groove (217).

6. The multifunctional brush according to claim 2, characterized in that: The cleaning brush head (5) includes a brush head mounting shaft (50), a first brush head (51), and a second brush head (52). The motor (3) drives the brush head mounting shaft (50) to rotate through the transmission mechanism (7). The first brush head (51) and the second brush head (52) are respectively mounted on both sides of the brush head mounting shaft (50). Knobs (53) are installed at both ends of the brush head mounting shaft (50). The first brush head (51) and the second brush head (52) are mounted on the brush head mounting shaft (50) through the knobs (53).

7. The multifunctional brush according to claim 6, characterized in that: The inner bristles (54) of the first brush head (51) are inclined towards the middle, and the inner bristles (54) of the second brush head (52) are inclined towards the middle.

8. The multifunctional brush according to claim 6, characterized in that: The transmission mechanism (7) is housed within the protective casing (8).

9. The multifunctional brush according to claim 1, characterized in that: The lower heat dissipation holes include air inlets (222) and air outlets (223) that are staggered from each other.

10. The multifunctional brush according to any one of claims 1 to 9, characterized in that: A water inlet connector (9) is installed on the lower housing (22), and a valve (10) is installed on the water inlet connector (9).

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