Wireless charging coil structure of sweeper

Abstract

The utility model discloses a wireless charging coil structure of a sweeper, which comprises the sweeper and a wireless charging seat, a wireless charging receiving device is arranged in the sweeper, the wireless charging receiving device corresponds to the wireless charging seat and is in wireless connection with the wireless charging seat, the wireless charging receiving device comprises a charging coil, and the charging coil is connected with the wireless charging seat. The charging coil is arranged in a machine body in the circumferential direction of a universal wheel of the sweeper in a surrounding mode. According to the utility model, the charging coil of the wireless charging receiving device is arranged in the machine body in the circumferential direction of the universal wheel of the sweeper in a surrounding manner, so that the larger-area coverage of the charging coil is realized, the coil area is increased, the coupling coefficient and the charging efficiency are improved, and the use performance of the sweeper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household cleaning equipment, in particular to a wireless charging coil structure for a floor sweeper. Background Technique

[0002] As a household cleaning equipment, the floor sweeping robot greatly reduces people's daily cleaning burden with its autonomous and intelligent cleaning work. With the application of wireless charging technology in the field of floor sweeping robots, it has brought further improvement to the floor sweeping robots. Wireless charging simplifies the charging process. Without physical connection, the floor sweeping robot can automatically charge when it approaches the charging base; when the battery of the floor sweeping robot is insufficient, it can charge nearby, reducing the interruption of the cleaning work time; wireless charging reduces the wear of physical interfaces, extends the service life of the equipment, and reduces the maintenance cost; wireless charging eliminates the exposed cables and plugs during ordinary charging, reducing the risk of tripping and electric shock; wireless charging technology can be designed as a fully enclosed structure, effectively preventing failures under bad weather conditions; wireless charging combined with an intelligent navigation system enables the floor sweeping robot to autonomously complete cleaning and charging tasks; wireless charging has higher charging efficiency and energy conversion rate, reducing resource waste; users do not need to manage the charging cable, improving the use experience. The floor sweeping robot has been on the market for many years before the application of wireless charging technology. Its internal structure and control system have been optimized and improved for a long time and have tended to be stable. Therefore, realizing the application of wireless charging without damaging the original structure of the floor sweeping robot as much as possible can reduce the cost required for technology upgrading and also maintain the original cleaning performance of the floor sweeping robot.

[0003] CN201721695640.4 discloses a floor sweeper charging system, a floor sweeper and a wireless charging base. The floor sweeper charging system includes a floor sweeper and a wireless charging base. The floor sweeper includes a radio receiving module. The radio receiving module includes at least two receiving coils connected in series. The receiving coils connected in series are horizontally installed in the housing of the floor sweeper and have a horizontal receiving surface; the charging base includes a base and a horizontal charging plate installed on the base. The charging plate has at least two transmitting coils connected in series. The transmitting coils connected in series are horizontally placed in the charging plate to form a horizontal transmitting surface. In this technical solution, the receiving coil of wireless charging is installed on both sides of the universal wheel of the floor sweeper. Due to limited space, the area of the coil set is small, the coupling coefficient is low, and the charging efficiency is low, which affects the use effect of the floor sweeper. Content of the Utility Model

[0004] The purpose of the utility model is to provide a wireless charging coil structure for a floor sweeper, to solve the problem that the receiving coil of wireless charging in the prior art is installed on both sides of the universal wheel of the floor sweeper. Due to limited space, the area of the coil set is small, the coupling coefficient is low, and the charging efficiency is low, which affects the use performance of the floor sweeper, so as to overcome the deficiencies of the prior art.

[0005] The present utility model provides a wireless charging coil structure for a floor sweeper through the following technical solutions, which includes a floor sweeper and a wireless charging stand. A wireless charging receiving device is provided inside the floor sweeper. The wireless charging receiving device corresponds to and is wirelessly connected to the wireless charging stand. The wireless charging receiving device includes a charging coil, and the charging coil is disposed around the circumference of the universal wheel of the floor sweeper within the body.

[0006] Further, the shape of the charging coil is one of a circle, an ellipse, a sector, a rectangle, or a square.

[0007] Further, the charging coil is a Litz coil or a printed circuit board. The number of layers of each charging coil is 1 - 5 layers, and the number of turns of each layer of the coil is 1 - 20 turns.

[0008] Further, the wireless charging receiving device further includes a charging module. The charging coil is electrically connected to the charging module, and the charging module is electrically connected to the battery of the floor sweeper.

[0009] The present utility model has the following beneficial effects: By disposing the charging coil of the wireless charging receiving device around the circumference of the universal wheel of the floor sweeper within the body, a larger area coverage of the charging coil is achieved, the coil area is increased, the coupling coefficient and the charging efficiency are improved, and the performance of the floor sweeper is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is an overall schematic diagram of the wireless charging coil structure for a floor sweeper according to the present utility model.

[0011] Figure 2 is a schematic diagram of the charging coil of Embodiment 1 of the wireless charging coil structure for a floor sweeper according to the present utility model.

[0012] Figure 3 is a schematic diagram of the charging coil of Embodiment 2 of the wireless charging coil structure for a floor sweeper according to the present utility model.

[0013] Figure 4 is a schematic diagram of the charging coil of Embodiment 3 of the wireless charging coil structure for a floor sweeper according to the present utility model.

[0014] Among them, Figures 1 to 4 the corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0015] 1 floor sweeper, 2 universal wheel, 3 moving wheel, 4 battery, 5 charging coil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0017] Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application.

[0018] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0019] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0020] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0021] Next, refer to Figures 1-4 Describe a wireless charging coil structure of a floor sweeper according to some embodiments of the present application.

[0022] The present utility model provides a wireless charging coil structure of a floor sweeper through the following technical solutions, including a floor sweeper 1 and a wireless charging base. A universal wheel 2 is provided on the front side of the bottom of the floor sweeper 1, and moving wheels 3 are provided on both sides of the bottom of the floor sweeper 1. A storage battery 4 for power supply and a wireless charging receiving device are provided inside the floor sweeper 1. The wireless charging receiving device corresponds to the wireless charging base and is wirelessly connected, and the wireless charging receiving device is electrically connected to the storage battery 4.

[0023] The wireless charging receiving device includes a charging coil 5 and a charging module. The charging coil 5 is disposed around the circumference of the body of the universal wheel 2, and the universal wheel 2 is located in the hollow area in the middle of the charging coil 5. This way, it does not affect the normal operation of the universal wheel 2 and maximally utilizes the body space around the circumference of the universal wheel 2. At the same time, the charging coil 5 is continuously disposed around, making full use of the coverage area of the coil, maximizing the coil area, thereby improving the coupling coefficient and charging efficiency, reducing the charging time of the sweeping robot, and improving its performance.

[0024] The wireless charging receiving device further includes a charging module. When the sweeping machine 1 enters the charging position, the wireless charging base and the wireless charging receiving device correspond to each other to achieve wireless connection. The charging coil 5 receives the electromagnetic wave emitted by the wireless charging base and converts it into an electric current, and the electric current flows through the charging module to charge the storage battery 4.

[0025] In Embodiment 1 of this solution, as shown in the appendix Figure 2 shown, the charging coil 5 is circular; in Embodiment 2, as shown in the appendix Figure 3 shown, the charging coil 5 is arc-shaped; in Embodiment 3, as shown in the appendix Figure 4 shown, the charging coil 5 is fan-shaped. The shape of the charging coil 5 can also be rectangular or square, and its shape can be flexibly adopted according to the body structure around the circumference of the universal wheel 2 to achieve the maximum coil area.

[0026] The charging induction coil 5 can be adhesively fixed in the body.

[0027] The charging induction coil 5 can be a Litz coil or a printed circuit board, and the number of layers of each coil is 1 - 5 layers, and the number of turns of each layer of the coil is 1 - 20 turns.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wireless charging coil structure for a sweeping machine, comprising a sweeping machine and a wireless charging seat, wherein a wireless charging receiving device is provided in the sweeping machine, the wireless charging receiving device corresponds to the wireless charging seat and is wirelessly connected, and the wireless charging receiving device comprises a charging coil, characterized in that: The charging coil is arranged in a surrounding manner in the body of the sweeping machine in the circumferential direction of the universal wheel.

2. The wireless charging coil structure of a sweeping machine according to claim 1, characterized in that: The shape of the charging coil is one of circular, elliptical, sector-shaped, rectangular or square.

3. The wireless charging coil structure of a sweeping machine according to claim 2, characterized in that: The charging coil is a Litz coil or a printed circuit board, the number of layers of each charging coil is 1-5 layers, and the number of turns of each layer of the coil is 1-20 turns.

4. The wireless charging coil structure of a sweeping machine according to claim 1, characterized in that: The wireless charging receiving device also includes a charging module, the charging coil is electrically connected to the charging module, and the charging module is electrically connected to the battery of the sweeping machine.

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