Patent Description:
With the development of automation, a robot is widely applied to our life. A robot swimming pool cleaner is a robot cleaner invented for cleaning the swimming pool. The swimming pool always has garbage, such as dust, human body exfoliative objects, tree leaves, insect corpse, etc. The robot swimming pool cleaner may collect the garbage so as to clean the swimming pool, however, the robot swimming pool cleaner is limited in size and influenced by a layout of different parts; an engine compartment and a battery compartment may occupy most of the space, resulting in insufficient garbage loading capacity, frequent cleaning of the garbage bin, inconvenience for use and poor user experience,.

<CIT> discloses a swimming pool cleaning device.

<CIT> discloses a wheel drive transmission structure for an underwater cleaning robot.

<CIT> discloses a modular swimming pool cleaner.

A technical problem to be solved by the present application is to provide a robot swimming pool cleaner with a higher space utilization rate.

In order to solve the above technical problem, the present application adopts the following technical solution according to appended claim <NUM>: the robot swimming pool cleaner includes a main body and a first driving wheel rotatably disposed on the main body, the main body is therein provided with a sealed compartment and a garbage bin, the sealed compartment is therein provided with a motor, an output shaft of the motor is provided with a first output gear, the first output gear is located out of the sealed compartment, and an inner side of the first driving wheel is provided with a first inner gear in meshed connection with the first output gear.

According to an embodiment of the present invention, the robot swimming pool cleaner further includes a second driving wheel rotatably disposed on the main body, the first driving wheel is disposed close to a front end of the main body, and the second driving wheel is disposed close to a rear end of the main body.

Further according to the present invention, the first driving wheel is further provided with a first outer gear, a side wall of the main body is further provided with a gear component, and the first outer gear is in meshed connection with the gear component. The robot swimming pool cleaner further includes a rolling brush connected with the gear component.

According to an embodiment of the present invention, a wheel hub of the first inner gear, the first outer gear and the first driving wheel are integrally formed by injection molding.

Further, the gear component includes a first transmission gear and a second transmission gear which are in meshed connection, the first outer gear is meshed with the first transmission gear, and the rolling brush is connected to the second transmission gear.

Further, the first outer gear, the first transmission gear and the second transmission gear are distributed triangularly, and connecting lines for central rotating axes of the first outer gear, the first transmission gear and the second transmission gear on the same plane form a triangle.

Further, the side wall of the main body is provided with a third transmission gear, a fourth transmission gear and a fifth transmission gear; the output shaft of the motor is further provided with a second output gear; an inner side of the second driving wheel is provided with a second inner gear; the second output gear is in meshed connection with the third transmission gear; the third transmission gear is in meshed connection with the fourth transmission gear; the fourth transmission gear and the fifth transmission gear are connected to an identical rotating shaft; and the fifth transmission gear is in meshed connection with the second inner gear.

Further, the first output gear and the fifth transmission gear are symmetrically disposed relative to a vertical plane where a central axis of the third transmission gear is located.

Further, the second output gear and the fourth transmission gear are symmetrically disposed relative to the vertical plane where the central axis of the third transmission gear is located.

Further, a side surface of the main body is provided with a protection plate, the protection plate and the main body are connected to form an enclosed space, and the second output gear, the third transmission gear and the fourth transmission gear are disposed in the enclosed space.

The present application has the following beneficial effects: the main body is therein provided with the sealed compartment and the garbage bin, the sealed compartment is therein provided with the motor, the output shaft of the motor is provided with the first output gear; the first inner gear is provided on the inner side of the first driving wheel, thus the whole sealed compartment provided with the motor may be close to one end of the main body, and a larger space is reserved on the other side of the main body for the garbage bin, thereby improving the loading capacity of the garbage bin.

In order to illustrate technical contents, achieved purposes and effects of the present application in detail, the technical contents, the achieved purposes and the effects are described below in combination with implementation modes and drawings.

Referring to <FIG>, a robot swimming pool cleaner includes a main body <NUM> and a first driving wheel <NUM> rotatably disposed on the main body <NUM>, the main body <NUM> is therein provided with a sealed compartment <NUM> and a garbage bin, the sealed compartment <NUM> is therein provided with a motor <NUM>, an output shaft of the motor <NUM> is provided with a first output gear <NUM>, the first output gear <NUM> is located out of the sealed compartment <NUM>, and an inner side of the first driving wheel <NUM> is provided with a first inner gear <NUM> in meshed connection with the first output gear <NUM>.

An operating principle of the present application is briefly described below: when the robot swimming pool cleaner works, the output shaft of the motor <NUM> drives the first output gear <NUM>, the first output gear <NUM> drives the first inner gear <NUM>, and the first inner gear <NUM> drives the first driving wheel <NUM> to enable the robot swimming pool cleaner to move.

It may be known from the above description that the present application has the following beneficial effects: the first inner gear <NUM> is provided on the inner side of the first driving wheel <NUM>, the first output gear <NUM> is provided on the output shaft of the motor <NUM>, the whole sealed compartment <NUM> provided with the motor <NUM> may be disposed close to one end of the main body, and a larger space is reserved on the other side of the main body <NUM> for the garbage bin, thereby improving the loading capacity of the garbage bin.

Further, the robot swimming pool cleaner further includes a second driving wheel <NUM> rotatably disposed on the main body, the first driving wheel <NUM> and the second driving wheel <NUM> are respectively disposed close to two ends of the main body <NUM>.

It may be known from the above description that the motor <NUM> is meshed with the first inner gear <NUM> through the first output gear <NUM> to drive the first driving wheel <NUM> to rotate.

Further, the first driving wheel <NUM> is further provided with a first outer gear <NUM>, a side wall of the main body <NUM> is further provided with a gear component, and the first outer gear <NUM> is meshed with the gear component. The robot swimming pool cleaner further includes a rolling brush <NUM> connected to the gear component.

It may be known from the above description that, responsive to rotating, the first driving wheel <NUM> drives the rolling brush <NUM> to rotate, thereby beneficially simplifying a structure of the robot swimming pool cleaner.

Further, a wheel hub of the first inner gear <NUM>, the first outer gear <NUM> and the first driving wheel <NUM> are integrally formed by injection molding.

It may be known from the above description that the wheel hub of the first inner gear <NUM>, the first outer gear <NUM> and the first driving wheel <NUM> are integrally formed by injection molding, thereby shortening the installation time, improving the production efficiency and beneficially enhancing the overall stability of the wheel.

Further, the gear component includes a first transmission gear <NUM> and a second transmission gear <NUM> which are meshed with each other, the first outer gear <NUM> is meshed with the first transmission gear <NUM>, and the rolling brush <NUM> is connected to the second transmission gear <NUM>.

It may be known from the above description that the two transmission gears are connected to the rolling brush <NUM>, a position for installation of the rolling brush <NUM> on the robot swimming pool cleaner may be adjusted, such that the position for installation of the rolling brush <NUM> is more flexible.

Further, the first outer gear <NUM>, the first transmission gear <NUM> and the second transmission gear <NUM> are distributed triangularly, and connecting lines for central rotating axes of the first outer gear, the first transmission gear and the second transmission gear on the same plane form a triangle.

It may be known from the above description that the first outer gear <NUM>, the first transmission gear <NUM> and the second transmission gear <NUM> are distributed triangularly, thereby saving a space, such that the first transmission gear <NUM> and the second transmission gear <NUM> may be contained inside the first driving wheel <NUM> to achieve a protection effect on the first transmission gear <NUM> and the second transmission gear <NUM>.

Further, the side wall of the main body <NUM> is provided with a third transmission gear <NUM>, a fourth transmission gear <NUM> and a fifth transmission gear <NUM>; the output shaft of the motor <NUM> is further provided with a second output gear <NUM>; the inner side of the second driving wheel <NUM> is provided with a second inner gear <NUM>; the second output gear <NUM> is meshed with the third transmission gear <NUM>; the third transmission gear <NUM> is meshed with the fourth transmission gear <NUM>; the fourth transmission gear <NUM> and the fifth transmission gear <NUM> are connected to an identical rotating shaft; and the fifth transmission gear <NUM> is meshed with the second inner gear <NUM>.

It may be known from the above description that by transmission of the second output gear <NUM>, the third transmission gear <NUM>, the fourth transmission gear <NUM> and the fifth transmission gear <NUM>, the motor <NUM> simultaneously drives the first driving wheel <NUM> and the second driving wheel <NUM> to realize four-wheel drive, thereby improving the obstacle crossing capability of the robot swimming pool cleaner.

Further, the first output gear <NUM> and the fifth transmission gear <NUM> are symmetrically disposed relative to a vertical plane where a central axis of the third transmission gear <NUM> is located.

It may be known from the above description that the first output gear <NUM> and the fifth transmission gear <NUM> are symmetrically disposed, thereby decreasing the number of molds and reducing the cost.

Further, the second output gear <NUM> and the fourth transmission gear <NUM> are symmetrically disposed relative to the vertical plane where the central axis of the third transmission gear <NUM> is located.

It may be known from the above description that the first output gear <NUM> and the fourth transmission gear <NUM> are symmetrically disposed, thereby decreasing the number of molds and reducing the cost.

Further, a side surface of the main body <NUM> is provided with a protection plate <NUM>, the protection plate <NUM> and the main body <NUM> are connected to form an enclosed space, and the second output gear <NUM>, the third transmission gear <NUM> and the fourth transmission gear <NUM> are disposed in the enclosed space.

It may be known from the above description that the enclosed space may protect the gears and prevent particles such as sand and the like, from entering the gears, thereby avoiding gear sticking.

Referring to <FIG>, embodiment I of the present application provides a robot swimming pool cleaner, including a main body <NUM> and a first driving wheel <NUM> rotatably disposed on the main body <NUM>; the main body <NUM> is therein provided with a sealed compartment <NUM> and a garbage bin; the sealed compartment <NUM> is therein provided with a motor <NUM>; an output shaft of the motor <NUM> is provided with a first output gear <NUM>; the first output gear <NUM> is located out of the sealed compartment <NUM>; and inner sides of the first driving wheel <NUM> are provided with a first inner gear <NUM> meshed with the first output gear <NUM>.

Specifically, the robot swimming pool cleaner further includes a second driving wheel <NUM> rotatably disposed on the main body <NUM>, the first driving wheel <NUM> and the second driving wheel <NUM> are respectively disposed close to two ends of the main body <NUM>. In the present embodiment, the motor <NUM> are connected to the first output gear <NUM>; the first output gear <NUM> are disposed in blank spaces above a left side in the first output gear <NUM>, thus, useless spaces in the first driving wheel <NUM> are fully utilized; there are two motors <NUM>; the output shafts of the two motors <NUM> are respectively connected to the first driving wheel <NUM> on two sides of the robot swimming pool cleaner, the first driving wheel <NUM> is a rear wheel, and the second driving wheel <NUM> is a front wheel, or the first driving wheel <NUM> is the front wheel, and the second driving wheel <NUM> is the rear wheel; the first driving wheel <NUM> and the second driving wheel <NUM> are the same in structure, the first inner gear <NUM> and second inner gear <NUM> are the same in structure, and first outer gear <NUM> and a second outer wheel <NUM> are the same in structure so as to improve the universality of the wheels, such that the wheels are convenient to replace.

Referring to <FIG> and <FIG>, the first driving wheel <NUM> is further provided with the first outer gear <NUM>, a side wall of the main body <NUM> is further provided with a gear component, and the first outer gear <NUM> is meshed with the gear component. The robot swimming pool cleaner further includes a rolling brush <NUM> connected to the gear component. The gear component includes a first transmission gear <NUM> and a second transmission gear <NUM> which are meshed with each other, the first transmission gear <NUM> is meshed with the second transmission gear <NUM>, and the rolling brush <NUM> is connected to the second transmission gear <NUM>. In the present embodiment, the gear component is located in the first driving wheel <NUM>, the rolling brush <NUM> is located at the bottom of a rear end of the main body <NUM>, and the rolling brush <NUM> is driven by the first driving wheel <NUM>. In other embodiment, the gear component may be located in the second driving wheel <NUM>, the gear component is meshed with the second outer gear <NUM>, the rolling brush <NUM> is located at the bottom of a front end of the main body <NUM>, the rolling brush <NUM> is driven by the second driving wheel <NUM>; the gear component may include one or three transmission gears in an equal quantity, and a rotation speed of the rolling brush <NUM> may be changed by providing a plurality of transmission gears.

Preferably, wheel hubs of the first inner gear <NUM>, the first outer gear <NUM> and the first driving wheel <NUM> are integrally formed by injection molding; the first outer gear <NUM>, the first transmission gear <NUM> and the second transmission gear <NUM> are distributed triangularly; and connecting lines for central rotating axes of the first outer gear <NUM>, the first transmission gear <NUM> and the second transmission gear <NUM> on the same plane form a triangle. In the present embodiment, an outer side of the main body <NUM> is provided with a bottom shell <NUM>; the first transmission gear <NUM> and the second transmission gear <NUM> are disposed on the bottom shell <NUM>; and the first transmission gear <NUM> and the second transmission gear <NUM> are located in spaces below a right side in the first driving wheel <NUM>. In other embodiment, the outer side of the main body <NUM> may be not provided with the bottom shell <NUM>; the first transmission gear <NUM> and the second transmission gear <NUM> may be located outside the first driving wheel <NUM>; or part regions of the first transmission gear <NUM> and the second transmission gear <NUM> are located inside the first driving wheel <NUM>, and part regions of the first transmission gear <NUM> and the second transmission gear <NUM> are located outside the first driving wheel <NUM>.

Referring to <FIG>, the side wall of the main body <NUM> is provided with a third transmission gear <NUM>, a fourth transmission gear <NUM> and a fifth transmission gear <NUM>; the output shaft of the motor <NUM> is further provided with a second output gear <NUM>; the inner sides of the second driving wheel <NUM> is provided with a second inner gear <NUM>; the second output gear <NUM> is meshed with the third transmission gear <NUM>; the third transmission gear <NUM> is meshed with the fourth transmission gear <NUM>; the fourth transmission gear <NUM> and the fifth transmission gear <NUM> are connected to an identical rotating shaft; and the fifth transmission gear <NUM> is meshed with the second inner gear <NUM>. In the present embodiment, the third transmission gear <NUM>, the fourth transmission gear <NUM> and the fifth transmission gear <NUM> are disposed on the bottom shell <NUM>; while driving the first driving wheel <NUM> through the third transmission gear <NUM>, the fourth transmission gear <NUM> and the fifth transmission gear <NUM>, the motor <NUM> may drive the second driving wheel <NUM>, the fifth transmission gear <NUM> is located in the space above the right side in the second driving wheel <NUM>.

Referring to <FIG>, the first output gear <NUM> and the fifth transmission gear <NUM> are symmetrically disposed relative to a vertical plane where the central axis of the third transmission gear <NUM> is located; the second output gear <NUM> and the fourth transmission gear <NUM> are symmetrically disposed relative to the vertical plane where the central axis of the third transmission gear <NUM> is located. In the present embodiment, the first output gear <NUM> and the fifth transmission gear <NUM> are the same in structure and size, the second output gear <NUM> and the fourth transmission gear <NUM> are the same in structure and size, and the third transmission gear <NUM> is located in a central region between the first driving wheel <NUM> and the second driving wheel <NUM>.

Referring to <FIG> and <FIG>, a side surface of the main body <NUM> is provided with a protection plate <NUM>, the protection plate <NUM> and the main body <NUM> are connected to form an enclosed space, and the second output gear <NUM>, the third transmission gear <NUM> and the fourth transmission gear <NUM> are disposed in the enclosed space. In the present embodiment, two sides of the main body <NUM> are provided with the protection plate <NUM>, and the protection plate <NUM> and the bottom shell <NUM> disposed on the main body <NUM> are matched to form the enclosed space configured to protect the gears exposed to the outside.

In conclusion, according to the robot swimming pool cleaner provided by the present application, the first inner gear is provided on the inner side of the first driving wheel, the first output gear is provided on the output shaft of the motor, consequently, the whole sealed compartment provided with the motor may be close to one end of the main body, and a larger space is reserved on the other side of the main body for the garbage bin, thereby improving the loading capacity of the garbage bin; the first outer gear and the gear component which is connected to the rolling brush are provided in the first driving wheel, such that, while driving the first driving wheel, the motor may drive the rolling brush to rotate; in addition, the output shaft of the motor is provided with the second output gear, the side wall of the main body is provided with the transmission gear meshed with the second inner gear disposed on the inner side of the second driving wheel, such that the motor may simultaneously drive the first driving wheel and the second driving wheel of the robot swimming pool cleaner to realize four-wheel drive, thereby improving the obstacle crossing capability of the robot swimming pool cleaner.

Claim 1:
A robot swimming pool cleaner, comprising a main body (<NUM>) and a first driving wheel (<NUM>) rotatably disposed on the main body (<NUM>), wherein the main body (<NUM>) is therein provided with a sealed compartment and a garbage bin (<NUM>), the sealed compartment is therein provided with a motor (<NUM>), an output shaft of the motor (<NUM>) is provided with a first output gear (<NUM>), the first output gear (<NUM>) is located out of the sealed compartment, and an inner side of the first driving wheel (<NUM>) is provided with a first inner gear (<NUM>) meshed with the first output gear (<NUM>), a side wall of the main body (<NUM>) is further provided with a gear component, and the robot swimming pool cleaner further comprises a rolling brush (<NUM>) connected to the gear component, characterised in that the first driving wheel (<NUM>) is further provided with a first outer gear (<NUM>), whereby the first outer gear (<NUM>) is in meshed connection with the gear component.