A lightweight wireless handheld dust cleaner

Abstract

The application discloses a light-weight wireless handheld dust collector, which comprises an air inlet pipe, a dust collecting cup, a motor, a battery and a handle. Meanwhile, an intelligent control module, a posture sensor and a dust sensor are additionally arranged. The intelligent control module identifies different cleaning scenes such as the ground or high places through the posture sensor, and calls corresponding reference power mapping curves; meanwhile, the curves are inquired in combination with the dust sensor signal, so that the motor power is dynamically adjusted. When the dust concentration continuously exceeds the standard, the strengthened cleaning cycle can be automatically started. Through the adaptive control combining the scene identification and the real-time dust sensing, the cleaning efficiency and the battery endurance are effectively improved, and the unification of the intelligence and the humanization is realized.

Description

Technical Field

[0001] This invention belongs to the field of smart home appliance technology, specifically relating to a lightweight cordless handheld vacuum cleaner. Background Technology

[0002] Cordless handheld vacuum cleaners have become an essential tool for modern household cleaning due to their portability and flexibility. With technological advancements and improved living standards, users' demands for vacuum cleaners have moved beyond basic vacuuming functions; they now expect higher levels of intelligence, better energy efficiency, and more targeted cleaning capabilities. Traditional cordless handheld vacuum cleaners typically offer a limited number of fixed power levels for manual selection, making it difficult to achieve the optimal balance between cleaning effectiveness and battery life in complex and ever-changing home environments.

[0003] Current handheld vacuum cleaners have significant limitations in terms of intelligence. First, they cannot sense the actual object being cleaned and the environment. For example, when the dust load differs between the floor and carpet, or between low and high areas (such as furniture tops), a fixed power setting may result in incomplete cleaning or wasted energy. Second, although some products have incorporated dust-sensing technology, their control strategies are often simplistic and fail to consider the vacuum cleaner's posture, leading to inaccurate power adjustments. Furthermore, in the face of sudden heavy dust accumulation, users must manually switch to a powerful mode, which is cumbersome and slow to respond. These factors collectively contribute to a poor user experience, low cleaning efficiency, and suboptimal battery life.

[0004] Therefore, the present invention proposes a lightweight cordless handheld vacuum cleaner to at least partially solve the above-mentioned problems. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this invention provides a lightweight cordless handheld vacuum cleaner, which solves the problem that traditional cordless handheld vacuum cleaners cannot automatically adjust their power according to the cleaning scenario and real-time dust concentration, resulting in a trade-off between cleaning performance and battery life.

[0006] The objective of this invention can be achieved through the following technical solution: A lightweight cordless handheld vacuum cleaner includes an air intake pipe, a dust cup connected to the air intake pipe, a motor, a battery powering the motor, and a handle, wherein the motor is connected to the side wall of the dust cup; it also includes: an intelligent control module, an attitude sensor electrically connected to the intelligent control module to detect the usage posture, and a dust sensor electrically connected to the intelligent control module to detect the dust concentration in the airflow; the intelligent control module is configured to: identify a cleaning scene based on the signal from the attitude sensor and call a reference power mapping curve corresponding to the cleaning scene; dynamically adjust the operating power of the motor based on the signal from the dust sensor and querying the currently invoked reference power mapping curve; and automatically start an enhanced cleaning cycle and control the motor to operate at enhanced power when the dust concentration is detected to be continuously higher than the enhanced trigger threshold within a preset time period.

[0007] As a preferred embodiment of the present invention, the cleaning scenario includes at least a floor cleaning scenario and a high-altitude cleaning scenario; the intelligent control module is configured to: when the posture sensor detects that the angle between the vacuum cleaner body and the horizontal plane is within a first angle range, identify it as a floor cleaning scenario and call the first reference power mapping curve; when the angle is detected to be within a second angle range, identify it as a high-altitude cleaning scenario and call the second reference power mapping curve; the overall power level of the first reference power mapping curve is higher than that of the second reference power mapping curve.

[0008] As a preferred embodiment of the present invention, the handle is provided with a mode switching switch electrically connected to the intelligent control module; the intelligent control module is further configured to: switch from automatic control mode to a fixed-power powerful cleaning mode in response to a manual command received through the mode switching switch; in the powerful cleaning mode, the intelligent control module ignores the dust sensor signal and maintains the motor power at a preset high power level.

[0009] As a preferred embodiment of the present invention, the intelligent control module is further configured to: synchronously start timing when the enhanced cleaning cycle is started, and automatically exit the enhanced cleaning cycle after reaching a preset duration.

[0010] As a preferred embodiment of the present invention, the intelligent control module is communicatively connected to the power management system of the battery and is configured to dynamically adjust the power output range of the reference power mapping curve according to the current remaining power of the battery.

[0011] As a preferred embodiment of the present invention, the attitude sensor includes an accelerometer; the intelligent control module is further configured to: calculate the user's pushing and pulling speed based on the data from the accelerometer, and dynamically compensate the motor power accordingly.

[0012] As a preferred embodiment of the present invention, it further includes a microphone connected to the intelligent control module; the intelligent control module has a built-in voice recognition unit for recognizing preset voice commands to switch working modes.

[0013] As a preferred embodiment of the present invention, it further includes a status indicator unit connected to the intelligent control module; the status indicator unit is configured to indicate the current cleaning scene, real-time power level, and activation status of the enhanced cleaning cycle.

[0014] As a preferred embodiment of the present invention, the intelligent control module is further configured with a self-learning unit, which is used to record the user's manual intervention behavior in a specific cleaning scenario and adaptively adjust the reference power mapping curve based on historical behavior data.

[0015] As a preferred embodiment of the present invention, the axis of the motor is parallel to the axis of the air inlet pipe and perpendicular to the central axis of the dust collection cup; the motor, battery and handle are all located on the same side of the dust collection cup, and are situated within the side wall space of the dust collection cup defined by two tangents parallel to the axis of the motor.

[0016] The beneficial effects of this invention are as follows: By introducing attitude sensors and dust sensors and configuring an intelligent control module for collaborative processing, adaptive power adjustment based on cleaning scene recognition and real-time dust concentration is achieved: By recognizing different scenes such as ground and high places and calling differentiated power curves, and dynamically adjusting the output in combination with dust signals, energy efficiency is significantly optimized and battery life is extended while ensuring cleaning effect; its automatically triggered enhanced cleaning cycle can effectively cope with sudden heavy pollution, while the compact structural layout and self-learning ability further improve the portability, user experience and overall intelligence level of the device. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a front view of the structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the control flow of the present invention.

[0021] In the diagram: 100, air intake pipe; 200, dust collection cup; 300, motor; 400, battery; 500, handle. Detailed Implementation

[0022] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0023] Example 1

[0024] Please see Figure 1 and Figure 2 This embodiment discloses a lightweight cordless handheld vacuum cleaner. The vacuum cleaner's physical structure mainly includes an air inlet pipe 100, a dust collection cup 200 connected to the air inlet pipe 100, a motor 300 for generating suction, a battery 400 for powering the entire machine, and a handle 500 for the user to hold and operate. These are the basic components constituting the cordless handheld vacuum cleaner.

[0025] Specifically, the air intake pipe 100 is located at the front of the vacuum cleaner and is used to connect various nozzles (such as floor brushes, crevice tools, etc.) to draw air containing dust and debris into the machine body. The dust collection cup 200 is airtightly connected to the rear end of the air intake pipe 100 and is used to separate and collect dust and impurities in the air through cyclone separation or a filter. The motor 300, preferably a high-speed brushless motor 300, drives the fan impeller to rotate at high speed, generating negative pressure inside the dust collection cup 200 and at the air intake pipe 100, thereby forming a powerful suction. The battery 400 is typically a rechargeable lithium-ion battery pack, providing power to the motor 300 and the intelligent control system described later. The handle 500 is ergonomically designed for easy holding during cleaning operations.

[0026] To achieve the core innovation of this invention—intelligent operation and energy efficiency—this vacuum cleaner adds an intelligent control system to the aforementioned basic structure. The core of this system is the intelligent control module, which is essentially a circuit board integrating a microprocessor and corresponding control software. This intelligent control module is electrically connected to multiple sensors and actuators, forming a closed-loop control system. Key components include:

[0027] Attitude sensor: This sensor is electrically connected to the intelligent control module and is used to detect the spatial attitude of the vacuum cleaner in real time during use, such as the angle between its main body and the horizontal plane, pitch angle, roll angle, etc. In this embodiment, the attitude sensor can be a three-axis or six-axis inertial measurement unit, which contains at least one accelerometer and / or one gyroscope. By analyzing the data output by the attitude sensor, the intelligent control module can accurately identify the user's current cleaning scenario.

[0028] Dust Sensor: This sensor is also electrically connected to the intelligent control module and is typically installed inside the duct through which the airflow passes (e.g., near the air inlet or outlet of the dust collection cup 200). Its function is to detect the concentration of dust particles in the airflow in real time. The dust sensor can employ either infrared beam transmission or laser scattering principles. When dust particles in the airflow pass through the sensing area, they block or scatter the light. The sensor converts this change in light signal into an electrical signal and transmits it to the intelligent control module, thereby quantifying the amount of dust currently inhaled.

[0029] Please see Figure 3 This is a schematic diagram of the control flow of the present invention. The intelligent control module is the execution center of the entire intelligent control logic. It is pre-configured to perform the following core functions: First, based on the signal received from the attitude sensor, the current cleaning scene is identified. Next, according to the identified scene, the corresponding reference power mapping curve is retrieved from memory. Then, the intelligent control module continuously reads the signal from the dust sensor and uses this signal as input to query the currently retrieved reference power mapping curve, thereby obtaining the real-time, dynamic target power value of the motor 300, and adjusting the operating power of the motor 300 accordingly through the drive circuit. In addition, the module also has an emergency handling mechanism: when the dust concentration is detected to be continuously higher than the preset enhanced trigger threshold for a preset period of time, it will automatically start the enhanced cleaning cycle, commanding the motor 300 to run at a preset, higher enhanced power to cope with sudden heavily polluted areas.

[0030] Example 2

[0031] This embodiment elaborates on the scene recognition and power adjustment mechanism mentioned in Embodiment 1. The cleaning scenes include at least floor cleaning and high-level cleaning, which are the two most typical working conditions in home cleaning. The intelligent control module distinguishes between these two scenes using data from the attitude sensor.

[0032] Specifically, the intelligent control module is configured to identify a floor cleaning scenario when the posture sensor detects that the angle between the main body of the vacuum cleaner (e.g., the part of the body containing the motor 300 and handle 500) and the horizontal plane is within a first angular range. This angular range is typically small, for example, between 0 and 45 degrees. This is because when cleaning floors, carpets, or under beds, the main body of the vacuum cleaner usually maintains a relatively parallel posture to the ground. Once a floor cleaning scenario is identified, the intelligent control module calls upon a pre-stored first reference power mapping curve.

[0033] Accordingly, when the intelligent control module detects that the included angle is within a second angle range, it identifies it as a high-level cleaning scenario. This angle range is typically large, for example, between 60 and 90 degrees. This corresponds to the posture of a user lifting the vacuum cleaner to clean high places such as curtains, ceilings, and cabinet tops. At this time, the intelligent control module will call upon the pre-stored second reference power mapping curve.

[0034] The design of these two reference power mapping curves is one of the key aspects of this invention. The overall power level of the first reference power mapping curve is set higher than that of the second reference power mapping curve. This is based on considerations of actual cleaning needs: floors and carpets typically accumulate more dust, hair, and particles, requiring greater suction power for effective cleaning, hence their corresponding higher power reference. Dust at higher elevations is mostly lighter floating dust or cobwebs, which do not require excessive suction power; excessively high power would unnecessarily consume too much electricity and potentially generate more noise. Therefore, the overall power level of the second reference power mapping curve is lower, aiming to achieve energy saving and a more comfortable user experience.

[0035] For example, the first reference power mapping curve might dynamically adjust the motor's power from 40% to 90%, while the second reference power mapping curve might adjust it from 20% to 60%. Within both curves, the power value is positively correlated with the dust sensor reading. That is, in the same scenario, the higher the dust concentration, the higher the power output by the intelligent control module after querying the curve. Through a dual adaptive mechanism of scene recognition and real-time dust sensing, this invention achieves intelligent power allocation under different cleaning tasks, greatly improving the balance between cleaning efficiency and battery life.

[0036] Example 3

[0037] In order to provide a more flexible and user-friendly experience, this invention provides other working modes and interaction methods in addition to the core automatic control mode.

[0038] In a preferred embodiment, the handle 500 is equipped with a mode switching switch electrically connected to the intelligent control module. This switch can be a physical button or a touch button. The intelligent control module is configured to respond to user manual commands received via this switch. When the user presses the switch, the vacuum cleaner switches from the default automatic control mode (i.e., a sensor-based adaptive adjustment mode) to a fixed-power intensive cleaning mode. In intensive cleaning mode, the intelligent control module ignores signals from the attitude sensor and dust sensor, directly controlling the motor 300 to operate continuously at a preset high power level. This mode is suitable for specific situations where the user subjectively determines the need for maximum suction for deep cleaning, such as cleaning stubborn crevices or areas with accumulated pet hair. Pressing the switch again switches back to automatic control mode.

[0039] Furthermore, this invention also incorporates sophisticated control logic for the enhanced cleaning cycle mentioned in Embodiment 1. The intelligent control module is configured to simultaneously start an internal timer when initiating the enhanced cleaning cycle. This cycle lasts for a preset time, such as 10 or 15 seconds. When the timer reaches the preset duration, even if the dust concentration may still be high, the intelligent control module will automatically control the vacuum cleaner to exit the enhanced cleaning cycle and return to the normal dynamic adjustment state based on the reference power mapping curve queried from the current scene and dust concentration. This automatic exit mechanism design, on the one hand, avoids the motor 300 from running at excessively high power for an extended period due to the sensor being temporarily blocked by large pieces of debris, thus protecting the motor 300 and saving energy; on the other hand, it also gives the system an opportunity to reassess the cleaning status. If the dust concentration still exceeds the standard after exiting, the enhanced cleaning cycle can be triggered again.

[0040] To provide users with a clear understanding of the vacuum cleaner's current operating status, this invention also includes a status indicator unit connected to the intelligent control module. This unit can be a single LED indicator or a group of LED indicators, or a small LCD or OLED display screen. The status indicator unit is configured to intuitively display key information to the user, such as:

[0041] Current cleaning scenario: For example, use different colored lights or different icons to represent floor cleaning and high-altitude cleaning respectively.

[0042] Real-time power rating: The real-time output power of the current motor 300 can be displayed using an LED light bar composed of multiple segments or a dynamically changing percentage number.

[0043] Enhanced cleaning cycle activation status: When the enhanced cleaning cycle is triggered, a specific indicator light may flash or remain on to indicate to the user that the vacuum cleaner is in maximum suction power mode.

[0044] Battery 400% charge: Displays the remaining battery level and reminds the user to charge it in time.

[0045] Operating mode: Clearly indicates whether the current mode is automatic or powerful.

[0046] This status indicator unit makes the information interaction between the user and the machine transparent, greatly enhancing the intelligent experience of the product.

[0047] Example 4

[0048] To further enhance the level of intelligence, this invention may also integrate one or more of the following preferred technical solutions.

[0049] 1. Battery 400 Power Sensing and Power Strategy Linkage: The intelligent control module communicates with the battery 400's built-in power management system. Through this connection, the intelligent control module can obtain the battery 400's precise remaining power in real time. Based on this information, the intelligent control module is configured to dynamically adjust the power output range of the baseline power mapping curve. For example, when the battery 400's power is above 80%, the upper limit of the power curve can be set to 90%; when the power drops to between 20% and 50%, to extend battery life, the upper limit can be intelligently limited to 75%; and when the power is below 20%, the power upper limit may be further reduced to 60%, prioritizing basic vacuuming functions. This dynamic adjustment strategy ensures optimal performance and battery life balance throughout the entire battery 400's lifespan.

[0050] 2. User Behavior Perception and Power Compensation: The functionality of the aforementioned attitude sensor can be further explored. The intelligent control module is configured to calculate the user's pushing and pulling speed of the vacuum cleaner based on changes in accelerometer data along a specific axis. When the system detects that the user is rapidly pushing and pulling the vacuum cleaner, it determines that the user is performing rapid, large-area cleaning. In this case, even if the dust concentration is not high, the intelligent control module can provide appropriate dynamic compensation to the motor's 300kW power, i.e., adding extra power beyond the result obtained from the power curve, to ensure sufficient cleaning coverage even during rapid movement. Conversely, this compensation is canceled when the user moves slowly or remains stationary. This makes power adjustment respond not only to what is sucked in but also to how it is used.

[0051] 3. Voice Control Function: To achieve more convenient hands-free operation, the present invention may also include a microphone connected to the intelligent control module. The intelligent control module integrates or connects to an external voice recognition unit. This unit pre-stores several voice commands, such as powerful mode, automatic mode, and stop operation. Users can directly control the vacuum cleaner's operating mode switching by speaking these preset voice commands, without needing to bend over or free their hands to press a switch, which is especially convenient when cleaning high places or when both hands are occupied.

[0052] 4. Self-Learning and Personalization: To make vacuum cleaners increasingly user-friendly, the intelligent control module can also be configured with a self-learning unit. This unit records and analyzes the user's manual intervention behaviors in specific cleaning scenarios. For example, the system records that when cleaning floors, the user always manually switches to the powerful mode whenever the dust level is at a medium level. After recording similar behaviors multiple times, the self-learning unit analyzes the user's cleaning habits and preferences. Based on this historical behavioral data, the system adaptively adjusts the corresponding baseline power mapping curve. In the example above, the system might increase the overall power output value of the first baseline power mapping curve in the medium dust concentration range. In this way, the vacuum cleaner's automatic control logic can gradually adapt to the specific user's usage habits, achieving truly personalized intelligent cleaning.

[0053] Example 5

[0054] In addition to its intelligent features, this invention, as a lightweight cordless handheld vacuum cleaner, has also undergone careful optimization in its structural layout to achieve better grip, balance, and a smaller storage volume. This embodiment provides an optimized structural layout.

[0055] In this layout, the axis of the motor 300 and the axis of the air intake pipe 100 are designed to be parallel to each other. Simultaneously, both axes are perpendicular to the central axis of the dust collection cup 200. This T-shaped or L-shaped core layout effectively shortens the overall length of the unit compared to traditional straight-line air duct designs.

[0056] Furthermore, the three core weight-bearing components of the vacuum cleaner—the motor 300, battery 400, and handle 500—are all cleverly positioned on the same side of the dust cup 200. Specifically, they are all located within the side wall space of the dust cup 200, defined by two virtual cross-sections parallel to the axis of the motor 300. The motor 300, battery 400, and handle 500 do not extend beyond the contour of the dust cup 200 in the width direction. This design brings multiple beneficial effects:

[0057] Extremely compact: The main components are integrated on one side of the dust cup 200, avoiding unnecessary extension of the body in multiple dimensions, making the overall structure very compact and easy to operate and store in small spaces.

[0058] Optimized center of gravity: The two heaviest components, the motor 300 and the battery 400, are positioned closer to the handle 500 and the dust cup 200, bringing the overall center of gravity closer to the user's hand. This significantly reduces the torque burden when lifting the vacuum cleaner to clean high places, greatly enhancing the subjective feeling of lightweight design and reducing fatigue during prolonged use.

[0059] Duct efficiency: Although the layout is compact, the internal flow channel is precisely designed to ensure that the airflow from the dust collection cup 200 to the motor 300 and then to the exhaust port remains smooth, reducing energy loss.

[0060] In summary, this invention, by introducing attitude sensors and dust sensors and configuring an intelligent control module for collaborative processing, achieves dual adaptive power adjustment based on cleaning scene recognition and real-time dust concentration. By recognizing different scenes such as ground and high places and calling different power curves, and dynamically adjusting the output in conjunction with dust signals, it significantly optimizes energy efficiency and extends battery life by 400 kilowatts while ensuring cleaning effectiveness. Its automatically triggered enhanced cleaning cycle can effectively cope with sudden heavy pollution, while manual mode switching, status indicators, voice control, and self-learning capabilities provide rich, convenient, and personalized human-computer interaction. Finally, its compact and optimized structural layout further enhances the portability and user experience of the device, achieving a perfect unity of intelligence, humanization, and lightweight design. It solves the pain points of traditional cordless handheld vacuum cleaners in terms of cleaning effect, battery life, and user experience, and has significant beneficial effects and broad market application prospects.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A lightweight cordless handheld vacuum cleaner, comprising an air intake pipe, a dust collection cup communicating with the air intake pipe, a motor, a battery powering the motor, and a handle, wherein the motor is connected to the side wall of the dust collection cup; characterized in that, Also includes: The intelligent control module, the attitude sensor electrically connected to the intelligent control module to detect the usage attitude, and the dust sensor electrically connected to the intelligent control module to detect the dust concentration in the airflow; The intelligent control module is configured as follows: The cleaning scene is identified based on the signal from the attitude sensor, and the reference power mapping curve corresponding to the cleaning scene is called. Based on the signal from the dust sensor and by querying the currently invoked reference power mapping curve, the operating power of the motor is dynamically adjusted. When the dust concentration is detected to be continuously higher than the enhanced trigger threshold within a preset time period, the enhanced cleaning cycle is automatically started, and the motor is controlled to run at enhanced power. The cleaning scenarios include at least a floor cleaning scenario and a high-altitude cleaning scenario. When the posture sensor detects that the angle between the vacuum cleaner body and the horizontal plane is within a first angle range, it is identified as a floor cleaning scenario and a first reference power mapping curve is invoked. When the angle is detected to be within a second angle range, it is identified as a high-altitude cleaning scenario and a second reference power mapping curve is invoked. The overall power level of the first reference power mapping curve is higher than that of the second reference power mapping curve. The intelligent control module is also connected to the battery's power management system and configured to dynamically adjust the power output range of the reference power mapping curve according to the battery's current remaining power. The attitude sensor includes an accelerometer, and the intelligent control module is further configured to calculate the user's pushing and pulling speed based on the data from the accelerometer, and to dynamically compensate the motor power accordingly.

2. The lightweight cordless handheld vacuum cleaner according to claim 1, characterized in that, The handle is equipped with a mode switching switch electrically connected to the intelligent control module; the intelligent control module is also configured to switch from automatic control mode to a fixed-power intensive cleaning mode in response to a manual command received through the mode switching switch; in the intensive cleaning mode, the intelligent control module ignores the dust sensor signal and maintains the motor power at a preset high power level.

3. A lightweight cordless handheld vacuum cleaner according to claim 1, characterized in that, The intelligent control module is also configured to: start timing synchronously when the enhanced cleaning cycle starts, and automatically exit the enhanced cleaning cycle after the preset duration is reached.

4. A lightweight cordless handheld vacuum cleaner according to claim 1, characterized in that, It also includes a microphone connected to the intelligent control module; the intelligent control module has a built-in voice recognition unit for recognizing preset voice commands to switch working modes.

5. A lightweight cordless handheld vacuum cleaner according to claim 1, characterized in that, It also includes a status indicator unit connected to the intelligent control module; the status indicator unit is configured to indicate the current cleaning scene, real-time power level and activation status of the enhanced cleaning cycle.

6. A lightweight cordless handheld vacuum cleaner according to claim 1, characterized in that, The intelligent control module is also equipped with a self-learning unit, which records the user's manual intervention behavior in specific cleaning scenarios and adaptively adjusts the benchmark power mapping curve based on historical behavior data.

7. A lightweight cordless handheld vacuum cleaner according to claim 1, characterized in that, The axis of the motor is parallel to the axis of the air intake pipe and perpendicular to the central axis of the dust collection cup; the motor, battery and handle are all located on the same side of the dust collection cup, and the whole is located within the side wall space of the dust collection cup defined by two tangents parallel to the axis of the motor.

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