Cleaning device
By setting conductive contacts and fixed conductive parts on the body and ground brush assembly of the cleaning device, a sliding rheostat is formed to identify the direction of motion in real time, the problems of detection failure and lag in the prior art are solved, and the user experience is improved.
Patent Information
- Application Number
- CN202410011980.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-03
- Publication Date
- 2025-07-04
AI Technical Summary
Existing cleaning devices are prone to detection failure and lag when identifying forward or backward motion states, which affects the user experience.
The body of the cleaning device and the ground brush assembly are respectively provided with conductive contact pads and fixed conductive parts. A sliding varistor is formed by sliding the conductive contact pads and fixed conductive parts, and the direction of motion is identified by changing the electrical signal, so that real-time detection is realized.
It realizes that the cleaning device can sense forward or backward in advance when pushing and pulling, avoids slipping and hair entanglement problems, and improves the accuracy of detection of movement state and user experience.
Smart Images
Figure CN120240899A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of cleaning devices, and particularly to cleaning devices. Background Art
[0002] Cleaning devices such as floor washers and vacuum cleaners can all move forward or backward during operation. Among them, the water output and the magnitude of the assistance required by the floor washer are different in the forward and backward movement states. Therefore, the floor washer needs to detect and identify the current movement direction of the machine, that is, whether it is moving forward or backward, so as to adjust the water output and the magnitude of the assistance according to different movement states, thereby improving the cleaning effect and the user experience.
[0003] Currently, floor washers mainly identify the direction through Hall encoders or grating encoders, and the encoder is installed on one of the wheels or separately installed on the floor brush as a separate component. Detecting the direction through the encoder has the following problems: when the wheel slips or the wheel is entangled with hair, the encoder cannot rotate or rotates with jamming, and the detection will fail; moreover, when the user pushes or pulls the machine, the signal can only be detected after the encoder actually rotates, which has a certain lag and affects the user experience. Summary of the Invention
[0004] Based on this, in view of the problem that it is easy to detect failure and lag when the cleaning device identifies the forward or backward movement state, it is necessary to provide a cleaning device that can detect the forward or backward movement state in real time.
[0005] A cleaning device, the cleaning device includes a floor brush assembly, a body, and a detection assembly; the floor brush assembly includes a fixed conductive member; the body includes a conductive contact piece, and the body is configured to be able to move the floor brush assembly forward and backward, and during the movement, the conductive contact piece slides relative to the fixed conductive member synchronously with the body to be connected to different positions of the fixed conductive member respectively; the detection assembly includes a circuit assembly and a detection piece, the circuit assembly is used to connect the conductive contact piece and the fixed conductive member, and outputs different electrical signals according to different connection positions of the two, and the detection piece is used to detect the electrical signal and judge the movement direction of the cleaning device.
[0006] In one embodiment, when the electrical signal is greater than a preset value, the cleaning device moves forward; when the electrical signal is less than the preset value, the cleaning device moves backward.
[0007] In one embodiment, the body is rotatably connected to the floor brush assembly, and the body rotates relative to the floor brush assembly to switch the cleaning device between a non-working state and a working state. When the cleaning device is in the non-working state, the conductive contact piece does not contact the fixed conductive member, and when the cleaning device is in the working state, the conductive contact piece contacts the fixed conductive member.
[0008] In one embodiment, the conductive contact piece is connected to one end of the body close to the floor brush assembly, and the conductive contact piece rotates synchronously with the body. When the cleaning device is switched from a non-working state to a working state, the fixed conductive member is disposed on the rotation path of the conductive contact piece.
[0009] In one embodiment, one end of the conductive contact piece is fixedly connected to the body, and the other end extends toward the conductive contact piece, and the conductive contact piece is configured to be able to deform axially under force.
[0010] In one embodiment, an elastic member is provided on the peripheral surface of the conductive contact piece, and both ends of the elastic member respectively abut against both ends of the conductive contact piece. The elastic member is configured to have a tendency to maintain the initial axial length of the conductive contact piece.
[0011] In one embodiment, the body includes a rotating shaft, and the floor brush assembly is provided with a rotating hole. The rotating shaft passes through the rotating hole, and at least in the front-rear direction, there is a gap between the outer peripheral surface of the rotating shaft and the inner wall of the rotating hole, so that the rotating shaft can move back and forth in the rotating hole.
[0012] In one embodiment, in the front-rear direction, the length of the gap is not greater than the length of the fixed conductive member.
[0013] In one embodiment, the circuit assembly includes a power source and a voltage-dividing resistor; the power source is connected to one end of the conductive contact piece, and the other end of the conductive contact piece is slidably connected to the fixed conductive member. The fixed conductive member is connected to the first end of the voltage-dividing resistor, the second end of the voltage-dividing resistor is grounded, and the detecting member is used to detect the voltage of the voltage-dividing resistor.
[0014] In one embodiment, the circuit assembly further includes a capacitor and a current-limiting resistor. The fixed conductive member is connected to the first end of the current-limiting resistor, the second end of the current-limiting resistor is connected to the first end of the capacitor, the second end of the capacitor is grounded, and the detecting member is disposed between the current-limiting resistor and the capacitor.
[0015] The cleaning device provided by the above solution sets a conductive contact piece and a fixed conductive part on the body and the floor brush assembly respectively, so that the conductive contact piece and the fixed conductive part can slide relative to each other when the body moves relative to the floor brush assembly and form a sliding rheostat in combination. Thus, by the change of the electrical signal (such as voltage or current) in the circuit where they are located compared with the preset value, the resistance change of the conductive contact piece and the fixed conductive part is deduced inversely, and then the direction of the conductive contact piece sliding relative to the fixed conductive part is known, so as to obtain the moving state of the body moving forward or backward relative to the floor brush assembly. Moreover, the conductive contact piece, the fixed conductive part and the detection assembly are all located inside the cleaning device and are not in direct contact with the ground, so there will be no problems of slipping and hair entanglement. In addition, by the way that the relative movement of the body and the floor brush assembly drives the conductive contact piece and the fixed conductive part to slide, when the machine is pushed or pulled, the body moves relative to the floor brush assembly first and the Vo voltage changes. At this time, the floor brush assembly has not yet had an actual displacement, and it can be sensed in advance whether the cleaning device will move forward or backward, and the assisting force and the water output can be adjusted in advance, which has predictability. Description of the Drawings
[0016] Figure 1 It is a schematic structural diagram of the cleaning device in a non-working state in an embodiment of the present application.
[0017] Figure 2 It is Figure 1 a schematic cross-sectional structural diagram of the cleaning device in
[0018] Figure 3 It is Figure 2 an enlarged schematic diagram at position A in
[0019] Figure 4 It is a schematic three-dimensional structural diagram of a partial position of the cleaning device in an embodiment of the present application.
[0020] Figure 5 It is a schematic structural diagram of the cleaning device in a working state in an embodiment of the present application.
[0021] Figure 6 It is Figure 5 a schematic cross-sectional structural diagram of the cleaning device in
[0022] Figure 7 It is Figure 6 an enlarged schematic diagram at position B in
[0023] Figure 8 It is a circuit diagram of the cleaning device for identifying the traveling direction in an embodiment of the present application.
[0024] Description of the Reference Numerals:
[0025] 100, cleaning device; 110, floor brush assembly; 111, fixed conductive member; 112, rotating hole; 120, body; 121, conductive contact; 122, elastic member; 123, rotating shaft; 130, detection assembly; 131, circuit board. Detailed implementation manners
[0026] To make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0027] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms 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 to the present application.
[0028] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.
[0029] In the present application, unless otherwise clearly specified and limited, if there are terms such as "installation", "connection", "connection", "fixation", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 or the interaction relationship between two elements, unless otherwise clearly limited. 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 circumstances.
[0030] In this application, unless otherwise clearly specified and defined, when a first feature is described as being "on" or "under" a second feature or the like, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.
[0031] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.
[0032] Refer to Figure 1 , Figure 1 FIG. shows a schematic structural diagram of the cleaning device 100 in a non-working state in an embodiment of the present application. In combination with Figure 2 as shown, Figure 2 FIG. shows a schematic cross-sectional structural diagram of the cleaning device 100 in a non-working state in an embodiment of the present application. A cleaning device 100 shown in the present application is described by taking a floor washer as an example in this specification and the accompanying drawings, but it is not limited thereto.
[0033] As Figures 1 to 3 shown, the cleaning device 100 includes a floor brush assembly 110 and a body 120. Among them, the floor brush assembly 110 is used to contact the ground and clean foreign objects on the ground, and the body 120 is used to provide power for the floor brush assembly 110 and is convenient for holding. It can be understood that when the cleaning device 100 moves forward or backward, its power source (manual pushing and pulling) acts on the body 120. Therefore, when the cleaning device 100 needs to move forward or backward, the body 120 is first stressed, and then drives the floor brush assembly 110 to move back and forth, so as to realize the forward or backward movement of the cleaning device 100.
[0034] As Figure 3 shown, the floor brush assembly 110 includes a fixed conductive member 111. The fixed conductive member 111 is fixedly disposed inside the floor brush assembly 110. The fixed conductive member 111 has electrical conductivity and has resistance. Optionally, the fixed conductive member 111 is fixed to the floor brush base in the floor brush assembly 110. Optionally, the fixed conductive member 111 is a conductive rubber strip.
[0035] As shown Figure 3 in FIG. 1, the body 120 includes a conductive contact piece 121 which has electrical conductivity. The conductive contact piece 121 is movably arranged relative to the fixed conductive piece 111 and can be connected to different positions of the fixed conductive piece 111. In this embodiment, the body 120 is configured to be able to move back and forth relative to the floor brush assembly 110. During the movement, the conductive contact piece 121 slides synchronously with the body 120 relative to the fixed conductive piece 111 to be connected to different positions of the fixed conductive piece 111, so as to form a sliding rheostat by combining the relatively slidable conductive contact piece 121 and the fixed conductive piece 111. Thus, the resistance change of the conductive contact piece 121 and the fixed conductive piece 111 can be deduced from the voltage or current change in the circuit where they are located, and further the sliding direction of the conductive contact piece 121 relative to the fixed conductive piece 111 can be known, so as to obtain the moving state of the body 120 moving forward or backward relative to the floor brush assembly 110.
[0036] In one embodiment, with reference to Figure 5 FIG. 2 Figure 6 and Figure 5 FIG. 3, there is shown a schematic structural view of the working state of the cleaning device 100 in an embodiment of the present application, Figure 6 and there is shown a schematic cross-sectional structural view of the working state of the cleaning device 100 in an embodiment of the present application. The body 120 is rotatably connected to the floor brush assembly 110. Optionally, as shown in Figure 3 FIG. 4 Figure 4 and FIG. 5, the body 120 includes a rotating shaft 123, and the floor brush assembly 110 is provided with a rotating hole 112. The rotating shaft 123 passes through the rotating hole 112 so that the body 120 rotates around the rotating shaft 123 to realize the rotation of the body 120 relative to the floor brush assembly 110. When the body 120 rotates relative to the floor brush assembly 110, the cleaning device 100 switches between a non-working state and a working state.
[0037] As shown in Figure 1 FIG. 6 Figure 2 and FIG. 7, when the cleaning device 100 is in the non-working state, the body 120 stands upright relative to the floor brush assembly 110. As shown in Figure 3 FIG. 8, at this time, the conductive contact piece 121 is not in contact with the fixed conductive piece 111, and there is an open circuit between the conductive contact piece 121 and the fixed conductive piece 111, and no current flows.
[0038] As shown in Figure 5 FIG. 9 Figure 6 and FIG. 10, when the cleaning device 100 is in the working state, the body 120 is inclined relative to the floor brush assembly 110, for example, it tilts backward 20° relative to the upright position. As shown in Figure 7As shown, at this time, the conductive contact piece 121 is in contact with the fixed conductive piece 111. At this time, an electrical connection is established between the conductive contact piece 121 and the fixed conductive piece 111, so that the conductive contact piece 121 that can slide relative to the fixed conductive piece 111 and the fixed conductive piece 111 are combined to form a slide rheostat. It can be understood that when the cleaning device 100 is in the working state, the angle at which the fuselage 120 is inclined relative to the floor brush assembly 110 is not the limit position of the backward tilt of the fuselage 120, and it can continue to rotate backward.
[0039] As Figure 3 and Figure 7 shown, in one embodiment, the conductive contact piece 121 is connected to one end of the fuselage 120 close to the floor brush assembly 110, and the conductive contact piece 121 rotates synchronously with the fuselage 120. When the cleaning device 100 rotates from the non-working state to the working state, generally, when the cleaning device 100 switches from the non-working state to the working state, the fuselage 120 needs to rotate from the upright position to tilt backward, that is, rotate backward. In the perspective of the drawings provided in this embodiment, the fuselage 120 needs to rotate clockwise. The fixed conductive piece 111 is arranged on the rotation path of the conductive contact piece 121, so that as the fuselage 120 rotates, the conductive contact piece 121 gradually approaches and contacts the fixed conductive piece 111.
[0040] As Figure 3 and Figure 7 shown, in one embodiment, one end of the conductive contact piece 121 is fixedly connected to the fuselage 120, and the other end extends toward the conductive contact piece 121. The conductive contact piece 121 is configured to be able to deform along its own axis under force, so that when the rotation angle of the fuselage 120 is greater than the rotation angle of the fuselage 120 when the conductive contact piece 121 just contacts the fixed conductive piece 111, the conductive contact piece 121 deforms along its own axis, so as to maintain the abutting state between the conductive contact piece 121 and the fixed conductive piece 111, and avoid affecting the rotation angle of the fuselage 120 due to the conductive contact piece 121.
[0041] As Figure 3 and Figure 7 shown, in one embodiment, an elastic member 122 is provided on the circumferential surface of the conductive contact piece 121, and both ends of the elastic member 122 abut against both ends of the conductive contact piece 121 respectively. The elastic member 122 is configured to have a tendency to maintain the initial length of the conductive contact piece 121 in the axial direction, so that when the fuselage 120 rotates to be vertical, that is, when the cleaning device 100 is in the non-working state, the conductive contact piece 121 can be restored, avoiding the axial length of the conductive contact piece 121 from becoming shorter and shorter after multiple uses.
[0042] As Figure 3As shown, in one embodiment, at least in the front - rear direction, there is a gap between the outer peripheral surface of the rotating shaft 123 and the inner wall of the rotating hole 112, so that the rotating shaft 123 can move back and forth within the rotating hole 112, thereby enabling the fuselage 120 to move back and forth relative to the ground - brushing assembly 110. During the movement, the conductive contact piece 121 and the fixed conductive member 111 slide relative to each other, and then the relatively - slidable conductive contact piece 121 and the fixed conductive member 111 are combined to form a sliding rheostat.
[0043] In one embodiment, in the front - rear direction, the sum of the gap and the length of the conductive contact piece 121 is not greater than the length of the fixed conductive member 111, so that the extreme range of movement of the conductive contact piece 121 is not greater than the length of the fixed conductive member 111 in the front - rear direction, ensuring that the conductive contact piece 121 always contacts the fixed conductive member 111 when moving back and forth, and preventing the conductive contact piece 121 from moving too far away from the fixed conductive member 111. Preferably, when the conductive contact piece 121 contacts the fixed conductive member 111, it contacts the middle position of the length (i.e., in the front - rear direction) and width (perpendicular to the front - rear direction) of the fixed conductive member 111.
[0044] In one embodiment, the resistance of the fixed conductive member 111 is uniformly arranged in the front - rear direction, avoiding uneven resistance setting of the fixed conductive member 111 that may cause uneven resistance change when the conductive contact piece 121 slides relative to the fuselage 120, and further avoiding obvious fluctuations in the measured voltage or current due to uneven resistance change. Optionally, the fixed conductive member 111 is made of a material with a fixed resistance, and the thickness of the fixed conductive member 111 in the front - rear direction is uniform, so that the resistance of the fixed conductive member 111 is uniformly arranged in the front - rear direction. The resistance value of the entire fixed conductive member 111 is determined according to its size and the doping ratio of the conductive material. Exemplarily, in this embodiment, the resistance value of the fixed conductive member 111 is 10K.
[0045] Combined Figure 4 shown Figure 4 As shown, a three - dimensional structural schematic diagram of a partial position of the cleaning device 100 in an embodiment of the present application is shown. The cleaning device 100 further includes a detection component 130. The detection component 130 includes a circuit component and a detection piece. Except for the wires connecting the components in the circuit component and the detection piece, the rest are arranged on the circuit board 131 as Figure 4 shown, and it can be understood that Figure 4The position of the middle circuit board 131 is only for illustration and not for limitation. The circuit component is used to connect the conductive contact piece 121 and the fixed conductive piece 111. Both the conductive contact piece 121 and the fixed conductive piece 111 are connected to the circuit board 131 through wires, and a conductive path is formed when the fixed conductive piece 111 contacts the conductive contact piece 121, and different electrical signals are output according to different connection positions of the fixed conductive piece 111 and the conductive contact piece 121. The detecting piece is used to detect the electrical signal (such as voltage or current) of the circuit component and judge the moving direction of the cleaning device 100. Specifically, the resistance change of the conductive contact piece 121 and the fixed conductive piece 111 is deduced by the voltage or current change in the circuit where it is located, and then the sliding direction of the conductive contact piece 121 relative to the fixed conductive piece 111 is known, so as to obtain the moving state of the fuselage 120 advancing or retreating relative to the ground brush assembly 110.
[0046] Combined with Figure 8 as shown, Figure 8 FIG. shows the circuit diagram for the cleaning device 100 to identify the traveling direction in an embodiment of the present application. In one embodiment, the circuit component includes a power supply and a voltage dividing resistor R4 located on the circuit board 131. The power supply is connected to one end of the conductive contact piece 121, and the other end of the conductive contact piece 121 is slidably connected to the fixed conductive piece 111, which is functionally equivalent to Figure 8 the sliding rheostat R1 in Figure 8 wherein the energized part of the conductive contact piece 121 and the fixed conductive piece 111 is equivalent to Figure 8 the energized resistance R2 of the dotted part in
[0047] As Figure 8 shown, in one embodiment, the circuit component further includes a capacitor C1 and a current limiting resistor R3. C1 is a filtering capacitor, which mainly processes the signal to ensure the stability of the electrical signal collected by the chip. The fixed conductive piece 111 is connected to the first end of the current limiting resistor R3, the second end of the current limiting resistor R3 is connected to the first end of the capacitor C1, and the second end of the capacitor C1 is grounded. The detecting piece is arranged between the current limiting resistor R3 and the capacitor C1 and is used to detect the voltage at Vo as Figure 8 shown.
[0048] The cleaning device 100 provided in the above solution:
[0049] As Figures 1 to 3As shown, when the body 120 is in the upright state, the cleaning device 100 is in a non-operating state. At this time, the conductive contact piece 121 connected to the body 120 and the fixed conductive piece 111 located in the floor brush assembly 110 are not in contact, and the conductive contact piece 121 and the fixed conductive piece 111 are in an open circuit, which is equivalent to that K in the circuit diagram shown in Figure 8 is in an open circuit, there is no current flowing in the circuit, and Vo measured by the detection component 130 is zero.
[0050] As Figures 5 to 7 shown, when the body 120 is in an inclined state, the cleaning device 100 is in an operating state. At this time, the conductive contact piece 121 connected to the body 120 and the fixed conductive piece 111 located in the floor brush assembly 110 are in contact, and the conductive contact piece 121 and the fixed conductive piece 111 that can slide relative to each other form a sliding rheostat R1 as shown in Figure 8 At this time, the Vo voltage is the 5V voltage division of the energized resistance R2 after R1 and R2 are connected in series.
[0051] When there is no thrust or pull force on the body, the electrical signal detected by the detection component is set as the preset value. When the electrical signal (illustrated by voltage in this embodiment) measured by the detection component is greater than the preset value, the cleaning device 100 moves forward. When the electrical signal measured by the detection component is less than the preset value, the cleaning device 100 moves backward. The specific analysis is as follows:
[0052] When the cleaning device 100 needs to move forward, the body 120 is subjected to a forward thrust force, so that the body 120 drives the rotating shaft 123 to move forward in the rotating hole 112, and drives the conductive contact piece 121 connected to the body 120 to slide relative to the fixed conductive piece 111 located in the floor brush assembly 110, thereby reducing (or increasing) the energized area in the fixed conductive piece 111 to adjust the resistance value of the energized part (such as the energized resistance R2 in Figure 8 ) in the sliding rheostat R1 formed by the two, and further reducing (or increasing) the resistance value in the circuit. According to Ohm's law, the current flowing through R2 and R4 will increase (or decrease), and then the voltage Vo corresponding to R4 will increase (or decrease). When the body 120 drives the rotating shaft 123 to abut against the rotating hole 112 forward, the body 120 will drive the floor brush assembly 110 to move forward, so as to realize the forward movement of the cleaning device 100.
[0053] When the cleaning device 100 needs to move backward, the body 120 is subjected to a backward thrust force, so that the body 120 drives the rotating shaft 123 to move backward in the rotating hole 112, and drives the conductive contact piece 121 connected to the body 120 to slide relative to the fixed conductive piece 111 located in the floor brush assembly 110, thereby increasing (or reducing) the energized area in the fixed conductive piece 111 to adjust the resistance value of the energized part (such as the energized resistance R2 in Figure 8The resistance value of the energized resistor R2) therein is changed, thereby increasing (or decreasing) the resistance value in the circuit. According to Ohm's law, the current flowing through R2 and R4 will decrease (or increase), and then the voltage Vo corresponding to R4 will decrease (or increase). When the body 120 drives the rotating shaft 123 to abut against the rotating hole 112 backward, the body 120 will drive the floor brush assembly 110 to move backward, thereby realizing the backward movement of the cleaning device 100.
[0054] For the cleaning device 100 provided by the above solution, by respectively providing the conductive contact 121 and the fixed conductive member 111 on the body 120 and the floor brush assembly 110, the conductive contact 121 and the fixed conductive member 111 can slide relative to each other and form a sliding rheostat when the body 120 moves relative to the floor brush assembly 110. Thus, by reversing the resistance change of the conductive contact 121 and the fixed conductive member 111 through the voltage or current change in the circuit where they are located, the sliding direction of the conductive contact 121 relative to the fixed conductive member 111 can be known, and then the forward or backward movement state of the body 120 relative to the floor brush assembly 110 can be obtained. Moreover, the conductive contact 121, the fixed conductive member 111 and the detection component 130 are all located inside the cleaning device 100 and are not in direct contact with the ground, so there will be no problems such as slipping and hair entanglement. In addition, by the way that the relative movement of the body 120 and the floor brush assembly 110 drives the conductive contact 121 and the fixed conductive member 111 to slide, when the machine is pushed or pulled, the body 120 moves relative to the floor brush assembly 110 first and the Vo voltage changes. At this time, the floor brush assembly 110 has not yet had an actual displacement, and it can be sensed in advance whether the cleaning device 100 will move forward or backward, and the assisting force and the water output can be adjusted in advance, which has predictability.
[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification is covered.
[0056] The above-described embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.
Claims
1. A cleaning device, characterized in that, The cleaning device includes: A floor brush assembly including a fixed conductive member; A body including a conductive contact. The body is configured to be able to move back and forth relative to the floor brush assembly. During the movement, the conductive contact slides synchronously with the body relative to the fixed conductive member to connect to different positions of the fixed conductive member respectively; A detection assembly including a circuit assembly and a detector. The circuit assembly is used to connect the conductive contact and the fixed conductive member and output different electrical signals according to different connection positions of the two. The detector is used to detect the electrical signals and judge the movement direction of the cleaning device.
2. The cleaning device according to claim 1, wherein When the electrical signal is greater than a preset value, the cleaning device moves forward; When the electrical signal is less than the preset value, the cleaning device moves backward.
3. The cleaning device according to claim 1, characterized in that, The body is rotatably connected to the floor brush assembly, and the body rotates relative to the floor brush assembly to switch the cleaning device between a non-working state and a working state. When the cleaning device is in the non-working state, the conductive contact does not contact the fixed conductive member. When the cleaning device is in the working state, the conductive contact contacts the fixed conductive member.
4. The cleaning device according to claim 3, characterized in that, The conductive contact is connected to one end of the body close to the floor brush assembly, and the conductive contact rotates synchronously with the body. When the cleaning device switches from the non-working state to the working state, the fixed conductive member is arranged on the rotation path of the conductive contact.
5. The cleaning device according to claim 3, characterized in that, One end of the conductive contact is fixedly connected to the body, and the other end extends towards the conductive contact. The conductive contact is configured to be able to deform axially under force.
6. The cleaning device according to claim 5, wherein An elastic member is provided on the circumferential surface of the conductive contact, and both ends of the elastic member respectively abut against both ends of the conductive contact. The elastic member is configured to have a tendency to maintain the initial axial length of the conductive contact.
7. The cleaning device according to claim 1, wherein The body includes a rotating shaft, and the floor brush assembly is provided with a rotating hole. The rotating shaft passes through the rotating hole, and at least in the front-back direction, there is a gap between the outer circumferential surface of the rotating shaft and the inner wall of the rotating hole so that the rotating shaft can move back and forth in the rotating hole.
8. The cleaning device according to claim 7, characterized in that In the front-back direction, the length of the gap is not greater than the length of the fixed conductive member.
9. The cleaning device according to claim 1, characterized in that, The circuit assembly includes a power supply and a voltage-dividing resistor; the power supply is connected to one end of the conductive contact, and the other end of the conductive contact is slidably connected to the fixed conductive member. The fixed conductive member is connected to the first end of the voltage-dividing resistor, and the second end of the voltage-dividing resistor is grounded. The detector is used to detect the voltage of the voltage-dividing resistor.
10. The cleaning device according to claim 9, characterized in that, The circuit assembly further includes a capacitor and a current-limiting resistor. The fixed conductive member is connected to the first end of the current-limiting resistor, the second end of the current-limiting resistor is connected to the first end of the capacitor, the second end of the capacitor is grounded, and the detector is arranged between the current-limiting resistor and the capacitor.