Handheld electric cleaning brush with nested double brush heads that rotate in opposite directions

Abstract

This handheld electric cleaning brush with nested double brush heads that rotate in opposite directions includes a cylindrical housing (1) and a brush head (2). The brush head is located at the front end of the cylindrical housing, and a handle (3) is attached to the side wall of the cylindrical housing. The brush head is divided into an inner brush head (201) and an outer brush head (202). Two interlocking rotating shafts are provided within the cylindrical housing, and the two brush heads are interlocked with each other at a distance and are interchangeably engaged with the front ends of the two interlocking rotating shafts. These two rotating shafts are divided into an inner rotating shaft (4) and an outer rotating shaft (5). A single driving device drives the two rotating shafts to rotate in opposite directions, thereby causing the two brush heads to rotate in opposite directions in unison. The inner rotating shaft (4) is fitted onto a central shaft (6) provided in the cylindrical housing, and a detergent passage (7) is provided in the central shaft. The liquid supply pump pressurizes the detergent fed from the detergent storage can (13) into the detergent passage, sends it out from the front end of the central shaft, and enters the inner brush head (201).

Description

[Technical Field]

[0001] The present invention relates to a handheld powered cleaning brush with counter-rotating nested dual brush heads. [Background technology]

[0002] Cleaning tasks are frequently performed in daily life, and the most common combination is a specialized cleaning solution with a brush or scrubbing pad. In the home, there are many types of dirt that need to be cleaned, which adhere to various surfaces and are distributed in various locations, making cleaning tasks time-consuming and labor-intensive. To save labor, many people choose to use an electric brush to assist in cleaning stubborn areas such as gas stoves and range hoods, or large areas such as tiles, floors, and glass. The cleaning process typically involves first spraying the cleaning solution onto the surface to be cleaned, allowing the surfactants, emulsifiers, penetrants, etc. to penetrate the dirt after contact with it, breaking it down and removing it. Then, the electric brush with a brush, scrubbing pad, or sponge head is pressed against the surface to be cleaned. The operator does not need to apply much force, and the mechanical power of the motor and the cleaning solution work together to increase efficiency, allowing the cleaning task to be completed relatively quickly.

[0003] However, consumers have discovered several problems when using electric brushes. 1. The cleaning solution and the electric brush are two separate items that must be removed separately, making them inconvenient to use. 2. The cleaning solution and dissolved dirt on the surface being cleaned are scattered in all directions as the brush rotates, staining nearby objects and the user's clothes. 3. When the brush head rotates at high speed, it moves tangentially, making operation difficult and requiring the operator to exert force to control it, which defeats the original purpose of using an electric brush to save labor. Currently available electric brushes offer several solutions to these problems. Problem 1 remains unsolved. Regarding problem 2, some manufacturers have tried using sponge brushes or scrub pad brush heads made of composite sponge materials instead of bristle brushes to solve the problem of cleaning solution splashing, but this method is limited by the brush head material and significantly reduces cleaning power in tight spaces, stubborn oil stains, and uneven surfaces. Furthermore, such absorbent materials increase the amount of cleaning solution used, and the high friction generated when brush heads made of such materials come into contact with the surface being cleaned means the user must exert more force to control the brush, making it difficult to operate, further exacerbating the third problem. Some manufacturers solve the problems of liquid splashing and slippage by reducing the rotation speed of their electric brushes, but this method results in a decrease in dirt removal ability. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] See International Search Report Summary of the Invention [Problem to be solved by the invention]

[0005] The objective of the present invention is to propose a handheld electric cleaning brush with nested double brush heads that rotate in opposite directions. It has two interlocking brush heads, and a drive unit controls the two brush heads to rotate in different directions, solving the problem of existing technologies in which the rotation of a single brush head causes cleaning solution and dissolved dirt to splash in all directions, staining nearby objects and the user's clothes. [Means for solving the problem]

[0006] To achieve the above object, the technical solution of the present invention is as follows. A handheld electric cleaning brush includes a cylindrical housing and a brush head, the brush head being attached to the front end of the cylindrical housing, and a handle attached to the side wall of the cylindrical housing, with nested double brush heads rotating in opposite directions. The brush heads are divided into an inner brush head and an outer brush head. Two interlocking rotating shafts are provided within the cylindrical housing, the two brush heads are interlocked with each other at a distance and are interchangeably inserted into the front ends of the two interlocking rotating shafts. The two interlocking rotating shafts are divided into an inner rotating shaft and an outer rotating shaft. A single driving device drives the two rotating shafts to rotate in opposite directions, thereby rotating the two brush heads in opposite directions. The inner rotating shaft is fitted onto a central shaft provided within the cylindrical housing, and a detergent passage is provided on the central shaft. A liquid supply pump pressures detergent supplied from a detergent storage canister into the detergent passage, and sends it out from the front end of the central shaft to enter the inner brush head.

[0007] The solution is further as follows: the drive device includes a drive motor, a first gear, a second gear, a third gear, and a reverse gear, the drive motor is fixed to a cylindrical housing, a positioning partition plate is provided in the middle of the cylindrical housing, the central shaft is provided at the center of the positioning partition plate, a first gear protruding from the positioning partition plate is fitted to the rotating shaft of the drive motor, a second gear is provided at the end of the inner rotating shaft, and a third gear is provided at the end of the outer rotating shaft, the first gear directly meshes with the second gear to drive the inner rotating shaft to rotate in one direction, a reverse gear is provided between the first gear and the third gear, and the first gear drives the third gear via the reverse gear, rotating the outer rotating shaft in a direction opposite to that of the inner rotating shaft.

[0008] The solution further includes the following: The rotation speed of the outer brush head is lower than the rotation speed of the inner brush head.

[0009] The solution further includes the following: The rotation speed of the outer brush head being lower than the rotation speed of the inner brush head means that the rotation speed does not exceed half of the rotation speed of the inner brush head.

[0010] The solution is further as follows: The gap between the inner brush head and the outer brush head is 5 mm to 10 mm, and the brush surface of the inner brush head is 1 mm to 2 mm higher than the brush surface of the outer brush head.

[0011] The solution is further as follows: the detergent storage can is provided at the end of a cylindrical housing, a liquid outlet is provided on each side surface at both ends of the detergent storage can, a liquid feed pump is provided at each of the liquid outlets at the front and rear ends, and the output of the liquid feed pump is connected via a pipe to a detergent passage provided in the central axis.

[0012] The solution is further as follows: A drive circuit of the drive device is provided in the handle, and the drive circuit includes a control circuit for the liquid feed pump, and a replaceable battery module is connected to the lower end of the handle.

[0013] The solution is further as follows: The outer brush head has an "L" shape via the substrate and surrounds the side and top surfaces of the inner brush head. [Effects of the Invention]

[0014] The beneficial effects of the present invention are as follows: by providing two interlocking brush heads and using a driving device to control the rotation of the two brush heads in different directions, the problem of the existing technology that the rotation of a single brush head causes cleaning solution and dissolved dirt to splash in all directions, staining nearby objects and the user's clothes, is solved; and by rotating the externally fitted brush head, the freedom of brush head selection is increased and cleaning efficiency is improved. The detergent storage can is designed to discharge liquid from both ends, ensuring that there is at least one liquid supply port that can suck up liquid from the detergent storage can whether the detergent storage can is upright or inverted.

[0015] The present invention will be described in detail below with reference to the drawings and examples. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of the structure of the present invention. [Figure 2] 1 is a schematic diagram of the external shape of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] A handheld electric cleaning brush with nested double brush heads that rotate in opposite directions, as shown in FIG. 1, comprises a cylindrical housing 1 and a brush head 2. The brush head 2 is mounted at the front end of the cylindrical housing 1, and a handle 3 is mounted on the side wall of the cylindrical housing. To solve the problem of cleaning solution and dissolved dirt scattering in all directions when the brush head rotates, the brush head is divided into two, an inner brush head 201 and an outer brush head 202. Two interlocking rotation shafts are mounted within the cylindrical housing 1, and the two interlocking rotation shafts are an inner rotation shaft 4 and an outer rotation shaft 5. The two brush heads are fitted together with a gap between them and are interchangeably fitted onto the front ends of the two fitting rotary shafts, the inner brush head 201 being fitted onto the inner rotary shaft 4 from the inside of the front end of the inner rotary shaft 4, and the outer brush head 202 being fitted onto the outer rotary shaft 5 from the outside of the front end of the inner rotary shaft 4, and a single driving device drives the two rotary shafts to rotate in opposite directions, thereby causing the two brush heads to rotate in opposite directions in unison, the inner rotary shaft being fitted onto a central shaft 6 provided within the cylindrical housing, and a detergent passage 7 being provided on the central shaft 6, and a liquid supply pump pressurizes the detergent supplied from the detergent storage can into the detergent passage 7, and sends it out from the front end of the central shaft 6 into the central region of the inner brush head 201.

[0018] Here, the drive device includes a drive motor 8, a first gear 9, a second gear 10, a third gear 11, and a reverse gear 12. The drive motor is fixed to a cylindrical housing. A positioning partition plate 101 is provided in the middle of the cylindrical housing. The central shaft 6 is provided at the center of the positioning partition plate 101. A first gear 9 protruding from the positioning partition plate 101 is fitted onto the rotating shaft of the drive motor 8. A second gear 10 is provided at the end of the inner rotating shaft 4. A third gear 11 is provided at the end of the outer rotating shaft 5. The first gear 9 directly meshes with the second gear 10 to drive the inner rotating shaft 4 to rotate in one direction. A reverse gear 12 is provided between the first gear 9 and the third gear 11. The first gear 9 drives the third gear 11 via the reverse gear 12, rotating the outer rotating shaft 5 in the opposite direction to the rotation direction of the inner rotating shaft 4. To improve the effect of preventing dirt from scattering in all directions, the rotation speed of the outer brush head can be selected to be higher than that of the inner brush head by changing the rotation speed ratio of the gears, but this will accelerate wear of the parts. In this embodiment, the rotation speed of the outer brush head is lower than that of the inner brush head to reduce wear. Here, the solution selected to not only ensure the improvement of the effect of preventing dirt from scattering in all directions but also to optimize the cleaning effect is as follows: The rotation speed of the outer brush head lower than that of the inner brush head means that it should not exceed half the rotation speed of the inner brush head. The distance between the inner brush head 201 and the outer brush head 202 is 5mm to 10mm, the brush surface of the inner brush head 201 is 1mm to 2mm higher than the brush surface of the outer brush head 202, and the inner brush head 201 and the outer brush head 202 are made of different materials, with the inner brush head 201 having a higher hardness than the outer brush head 202. The outer brush head is "L" shaped via a substrate and surrounds the side and top surfaces of the inner brush head.

[0019] The detergent storage can 13 may be a standalone can that the operator carries and introduces detergent through a conduit during use. However, this type of use is inconvenient, so in this embodiment, the detergent storage can 13 is mounted at the end of the cylindrical housing 1. To enable the detergent inside the detergent storage can 13 to be sucked out regardless of whether the cleaning brush is facing sideways, downwards, or upwards, liquid outlets 13-1 are provided on each side of both ends of the detergent storage can 13, and the liquid outlets 13-1 are in close contact with the end faces of both ends. Liquid supply pumps 14 are provided at the front and rear liquid outlets 13-1, and the outputs of the liquid supply pumps are connected via conduits to the detergent passage 7 provided on the central axis. Naturally, a liquid supply port (not shown) is provided on the detergent storage can 13.

[0020] In the embodiment, the drive circuit of the drive device is provided in the handle, and the drive circuit includes a control circuit for the liquid delivery pump. A replaceable battery module 15 is connected to the lower end of the handle, and a power switch 16 and a speed adjustment button 17 are provided on the handle.

[0021] The above-mentioned embodiment of the handheld electric cleaning brush with nested double brush heads rotating in opposite directions has two interlocking brush heads, and a drive unit controls the two brush heads to rotate in different directions, thereby solving the problem in the existing technology that the rotation of a single brush head causes cleaning solution and dissolved dirt to splash in all directions, staining nearby objects and the user's clothes. In addition, the rotation of the externally fitted brush heads increases the freedom to select the hardness of the brush head and improves cleaning efficiency. The detergent storage can is designed to discharge liquid from both ends, ensuring that there is at least one liquid supply port that can suck up liquid from the detergent storage can whether the detergent storage can is upright or inverted. [Explanation of symbols]

[0022] 1 Cylindrical housing 2 brush heads (201 inner brush head, 202 outer brush head) 3 Handle 4 Inner rotation axis 5 Outer rotating shaft 6 center axis 7 Cleaning agent passage 13 Detergent storage tank 14 Liquid transfer pump

Claims

1. A handheld electric cleaning brush with counter-rotating nested double brush heads, comprising a cylindrical housing and a brush head, the brush head being provided at a front end of the cylindrical housing, and a handle being provided on a side wall of the cylindrical housing, the brush heads are divided into an inner brush head and an outer brush head; two interlocking rotary shafts are provided within the cylindrical housing; the two brush heads are interlocked with each other at a distance and are interchangeably engaged with the front ends of the two interlocking rotary shafts; the two interlocking rotary shafts are divided into an inner rotary shaft and an outer rotary shaft; a single driving device drives the two rotary shafts to rotate in opposite directions, thereby interlocking and rotating the two brush heads in opposite directions; the inner rotary shaft is fitted onto a central shaft provided within the cylindrical housing, and a detergent passage is provided on the central shaft; and a liquid supply pump pressure-feeds detergent sent from a detergent storage can into the detergent passage and sends it out from the front end of the central shaft to enter the inner brush head.

2. 2. The handheld electric cleaning brush of claim 1, wherein the driving device includes a driving motor, a first gear, a second gear, a third gear, and a reverse gear, the driving motor is fixed to the cylindrical housing, a positioning partition plate is provided in the middle of the cylindrical housing, the central shaft is provided at the center of the positioning partition plate, a first gear protruding from the positioning partition plate is fitted to the rotating shaft of the driving motor, a second gear is provided at an end of the inner rotating shaft, and a third gear is provided at an end of the outer rotating shaft, the first gear directly meshes with the second gear to drive the inner rotating shaft to rotate in one direction, a reverse gear is provided between the first gear and the third gear, and the first gear drives the third gear via the reverse gear to rotate the outer rotating shaft in a direction opposite to that of the inner rotating shaft.

3. 2. The handheld power cleaning brush of claim 1, wherein the rotation speed of the outer brush head is slower than the rotation speed of the inner brush head.

4. 4. The handheld electric cleaning brush of claim 3, wherein the rotation speed of the outer brush head is slower than the rotation speed of the inner brush head, meaning that the rotation speed of the outer brush head is no more than half the rotation speed of the inner brush head.

5. 2. The handheld electric cleaning brush according to claim 1, wherein the gap between the inner brush head and the outer brush head is 5 mm to 10 mm, and the brush surface of the inner brush head is 1 mm to 2 mm higher than the brush surface of the outer brush head.

6. 2. The handheld electric cleaning brush according to claim 1, wherein the detergent storage can is disposed at the end of a cylindrical housing, and a liquid outlet is provided on each side surface of the detergent storage can, and a liquid supply pump is provided at each of the liquid outlets at the front and rear ends, and the output of the liquid supply pump is connected via a pipe to a detergent passage provided in the central shaft.

7. 2. The handheld electric cleaning brush according to claim 1, wherein a drive circuit of the drive device is provided in the handle, the drive circuit includes a control circuit for the liquid pump, and a replaceable battery module is connected to the lower end of the handle.

8. 2. The handheld electric cleaning brush according to claim 1, wherein the outer brush head has an "L" shape via a substrate and surrounds the side and top surfaces of the inner brush head.

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