A control circuit for a brush-equipped vacuum cleaner

Abstract

The utility model relates to a control circuit suitable for dust collector with ground brush, including battery package, the output of battery package is connected with the input of MCU module, the output of battery package is connected with the input of secondary protection module, the input of MCU module is connected with the output of charging module, the output of charging module is connected with the input of secondary protection module, the identification end of MCU module is connected with the output of ground brush identification module, the input of ground brush identification module is connected with one end of PTC, the other end of PTC is connected with the output of ground brush module, ground brush module is connected with ground brush LED module, the control end of MCU module is connected with the controlled end of main motor, the external control module of MCU module. The utility model can be self -adaptation mode, can also guarantee circuit simultaneously, reaches the purpose that reduces cost.

Description

Technical Field

[0001] This utility model relates to a control circuit suitable for a vacuum cleaner with a floor brush. Background Technology

[0002] With the rapid development of emerging market economies and the significant improvement in residents' living standards, the penetration rate of home appliances continues to rise, with small cleaning appliances performing particularly well. As a core product of modern home cleaning solutions, cordless vacuum cleaners are reshaping the competitive landscape of China's small appliance market with their revolutionary user experience.

[0003] From traditional canister vacuums to upright vacuums, from the constraints of corded systems to the freedom of cordless operation, the evolution of vacuum cleaners reflects consumers' enduring pursuit of convenience. Cordless vacuum cleaners, through integrated battery technology, completely eliminate the physical limitations of power cords. Their lightweight design (average weight reduction of 40%) and ergonomic structure improve cleaning efficiency while significantly reducing operator fatigue.

[0004] Currently, existing solutions have limited functionality, cannot accurately display the battery percentage, and cannot provide detailed indicator light differentiation for various alarm errors.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of control circuit suitable for vacuum cleaners with floor brushes, making it more valuable for industrial applications. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a control circuit suitable for vacuum cleaners with floor brushes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A control circuit for a vacuum cleaner with a floor brush includes a battery pack. The output terminal of the battery pack is connected to the input of an MCU module. The output terminal of the battery pack is also connected to the input of a secondary protection module. The input terminal of the MCU module is connected to the output of a charging module. The output terminal of the charging module is also connected to the input of the secondary protection module. The identification terminal of the MCU module is connected to the output of a floor brush identification module. The input terminal of the floor brush identification module is connected to one end of a PTC (Power Transmitter Clock). The other end of the PTC is connected to the output of the floor brush module. The floor brush module is connected to a floor brush LED module. The control terminal of the MCU module is connected to the controlled terminal of the main motor. An external control module is also connected to the MCU module.

[0008] Preferably, in the control circuit applicable to a vacuum cleaner with a floor brush, the MCU module uses a chip model of SH39F325A.

[0009] Preferably, in the control circuit applicable to vacuum cleaners with floor brushes, the secondary protection module uses a CW1071 chip.

[0010] Preferably, in the control circuit applicable to a vacuum cleaner with a floor brush, the PTC is a resettable fuse, model RLD60P160XMF.

[0011] Preferably, in the control circuit applicable to a vacuum cleaner with a floor brush, the MCU module is connected to the main motor, control module, and floor brush module via a public connector.

[0012] Preferably, the control circuit for a vacuum cleaner with a floor brush includes a speed control button and an on / off button.

[0013] By means of the above solution, this utility model has at least the following advantages: This invention introduces intelligent floor brush identification technology, which classifies different types of floor brushes based on their resistance values. At the same time, the MCU module automatically matches a dynamic protection parameter library, covering speed control, pressure threshold, and overall power, which can intelligently adapt to different cleaning scenarios. Furthermore, the PTC effectively protects the circuit and prevents it from burning out, thereby reducing costs.

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the principle of this utility model; Figure 2 This is the actual circuit diagram of the MCU module of this utility model; Figure 3 This is the actual circuit diagram of the secondary protection module of this utility model; Figure 4 This is the actual circuit diagram of the floor brush recognition module of this utility model; Figure 5 This is the actual circuit diagram of the control module of this utility model; Figure 6This is the actual circuit diagram of the LED module of this utility model; Figure 7 This is the actual circuit diagram of the floor brush module of this utility model. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0019] Example like Figures 1 to 7 As shown, a control circuit suitable for a vacuum cleaner with a floor brush includes a battery pack 1. The output terminal of the battery pack 1 is connected to the input terminal of an MCU module 2. The output terminal of the battery pack 1 is also connected to the input terminal of a secondary protection module 3. The input terminal of the MCU module 2 is connected to the output terminal of a charging module 4. The output terminal of the charging module 4 is also connected to the input terminal of the secondary protection module 3. The identification terminal of the MCU module 2 is connected to the output terminal of a floor brush identification module 5. The input terminal of the floor brush identification module 5 is connected to one end of a PTC 6. The other end of the PTC 6 is connected to the output terminal of a floor brush module 7. The floor brush module 7 is connected to a floor brush LED module 8. The control terminal of the MCU module 2 is connected to the controlled terminal of a main motor 9. An external control module 10 is connected to the MCU module 2.

[0020] In this embodiment, the MCU module 2 uses the SH39F325A chip, which integrates MCU, LDO and analog front-end as the main controller, and CW1071 as the secondary protection chip. The external motor is controlled by PWM signal and FG signal is used to receive motor blockage information.

[0021] The PTC6 is a self-resetting fuse, model RLD60P160XMF. The MCU module 2 is connected to the main motor, control module, and ground brush module via a public connector. The control module 10 includes a gear position button and an on / off button.

[0022] For ground brush identification, the specific operation is as follows: two MOSFETs are connected in series for control. One MOSFET is normally open, and the other is switched on. This prevents the failure of a single MOSFET while adding ground brush identification functionality. The ground brush type is determined by detecting the voltage across the voltage divider resistor in the MCU module's MBRDET_ADC, which identifies either a standard ground brush or a Mini ground brush. Furthermore, ground brush identification requires disconnecting the positive terminal circuit; therefore, the ground brush MOSFET uses positive terminal control (e.g., ...). Figure 4 As shown), the standard ground brush has no additional circuit board, so the detection signal determines a short circuit if the resistance is less than 15K. The Mini ground brush has an additional circuit board, and a 51K resistor (R9) is connected to the positive and negative terminals (as shown). Figure 7 As shown in the figure, the type of ground brush is determined by collecting the ADC voltage value.

[0023] The RLD60P160XMF resettable PTC fuse used on the public connector board has a 60V withstand voltage and a continuous current of 1.6A, which improves the protection of the ground brush module.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A control circuit suitable for a vacuum cleaner with a floor brush, comprising a battery pack (1), characterized in that: The output terminal of the battery pack (1) is connected to the input terminal of the MCU module (2). The output terminal of the battery pack (1) is connected to the input terminal of the secondary protection module (3). The input terminal of the MCU module (2) is connected to the output terminal of the charging module (4). The output terminal of the charging module (4) is connected to the input terminal of the secondary protection module (3). The identification terminal of the MCU module (2) is connected to the output terminal of the ground brush identification module (5). The input terminal of the ground brush identification module (5) is connected to one end of the PTC (6). The other end of the PTC (6) is connected to the output terminal of the ground brush module (7). The ground brush module (7) is connected to the ground brush LED module (8). The control terminal of the MCU module (2) is connected to the controlled terminal of the main motor (9). The MCU module (2) is connected to an external control module (10).

2. The control circuit for a vacuum cleaner with a floor brush according to claim 1, characterized in that: The MCU module (2) uses a chip model of SH39F325A.

3. The control circuit for a vacuum cleaner with a floor brush according to claim 1, characterized in that: The secondary protection module (3) uses a CW1071 chip.

4. The control circuit for a vacuum cleaner with a floor brush according to claim 1, characterized in that: The PTC (6) is a resettable fuse, model RLD60P160XMF.

5. A control circuit for a vacuum cleaner with a floor brush according to claim 1, characterized in that: The MCU module (2) is connected to the main motor, control module, and floor brush module via a public connector.

6. A control circuit for a vacuum cleaner with a floor brush according to claim 1, characterized in that: The control module (10) includes a gear position button and an on / off button.

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