Sweeping machine

Abstract

The application discloses a sweeper, which comprises a chassis, a driving wheel assembly movably connected with the chassis, one side of the driving wheel assembly movably abutting against a supporting surface, the driving wheel assembly being provided with a sensing part, and a sensor device corresponding to the sensing part, the driving wheel assembly being movable relative to the chassis to abut against the supporting surface, the sensing part being spaced apart from the sensor device, or the driving wheel assembly being movable relative to the chassis to a suspended position to be away from the supporting surface, the sensing part triggering a sensing signal of the sensor device. The technical scheme of the application aims to sense the state of the roller in real time and improve the cleaning stability of the sweeper.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a sweeping robot. Background Technology

[0002] With the advancement of technology, people's demands for quality of life are gradually increasing. When the environment needs cleaning, sweeping machines are generally used. In exemplary technology, sweeping machines have rollers, which are driven by a drive device to move and thus enable the sweeping machine to clean. However, when the sweeping machine moves to certain areas and the rollers become suspended in the air, the rollers cannot drive the sweeping machine to move, affecting the stability of the sweeping machine's cleaning work. Summary of the Invention

[0003] The main objective of this invention is to provide a sweeping machine that can sense the status of the rollers in real time, thereby improving the stability of the sweeping machine's cleaning operation.

[0004] To achieve the above objectives, the present invention provides a sweeping machine comprising:

[0005] Chassis;

[0006] A drive wheel assembly, movably connected to the chassis, with one side of the drive wheel assembly movably abutting a support surface, and the drive wheel assembly equipped with a sensing unit; and

[0007] A sensor is provided corresponding to the sensing unit. The drive wheel assembly is movable relative to the chassis so that the drive wheel assembly abuts against the support surface. The sensing unit is spaced apart from the sensor. Alternatively, the drive wheel assembly is movable relative to the chassis to a suspended position so that the drive wheel assembly moves away from the support surface. The sensing unit triggers the sensing signal of the sensor.

[0008] In some embodiments of the present invention, the sensor is disposed on the chassis, the sensor is a micro switch, the sensing surface of the micro switch is located on the rotation path of the sensing part and is disposed toward the sensing part, and the sensing part protrudes from the side of the drive wheel assembly away from the support surface.

[0009] In some embodiments of the present invention, the sensor is a photoelectric switch. The photoelectric switch further includes a transmitter and a receiver disposed opposite to each other, and a sensing gap is formed between the transmitter and the receiver. The sensing gap is located in the movement path of the sensing part, and the sensing part is movably inserted into the sensing gap.

[0010] In some embodiments of the present invention, the drive wheel assembly includes a mounting housing and a wheel rotatably connected to the mounting housing, the mounting housing being rotatably connected to the chassis, the wheel being movably abutting against a support surface, and the sensing unit being disposed on the outside of the mounting housing;

[0011] The sweeper is defined to have mutually perpendicular length, width, and height directions. The mounting shell is defined to rotate relative to the chassis along a rotation axis. The wheels are spaced apart from the rotation axis in the length direction. The sensing unit is located between the wheels and the rotation axis.

[0012] In some embodiments of the present invention, the sensing part is arranged in a rod shape and extends from the mounting shell in a direction away from the support surface.

[0013] In some embodiments of the present invention, the chassis is provided with a mounting cavity, the mounting cavity having a mounting opening and a clearance opening, the housing being rotatably disposed within the mounting cavity, at least a portion of the wheels extending out of the mounting opening, the sensing element passing through the clearance opening, the sensor being disposed adjacent to the clearance opening, and the sweeper also being provided with an elastic traction member, the elastic traction member connecting the chassis and the mounting housing.

[0014] In some embodiments of the present invention, the mounting housing is provided with a first hook adjacent to the sensing part, the cavity wall of the mounting cavity is provided with a second hook, and the elastic traction member is elastically connected to the first hook and the second hook.

[0015] In some embodiments of the present invention, the second hook is provided corresponding to the wheel;

[0016] And / or, the chassis is further provided with an operating port that communicates with the mounting cavity, and the operating port is located adjacent to the second hook.

[0017] In some embodiments of the present invention, the chassis is provided with a snap-fit ​​position, and the sensor is snap-fitted into the snap-fit ​​position;

[0018] And / or, the number of drive wheel assemblies and the number of sensor devices are both multiple, the multiple drive wheel assemblies are spaced apart on the chassis, each drive wheel assembly is provided with a sensing part, and one sensing part corresponds to one sensor device.

[0019] In some embodiments of the present invention, both the sensing unit and the sensor element are distance sensors;

[0020] And / or, the sweeper also includes an alarm device, which is electrically connected to the sensor.

[0021] In some embodiments of the present invention, the sweeping machine includes a drive structure, the drive structure comprising:

[0022] The housing is provided with a connecting part for connecting to an external mechanism, and the connecting part can drive the housing to move;

[0023] A power unit, which is mounted on the housing, has a wiring portion for connecting to an external circuit;

[0024] A wire, one end of which is electrically connected to the wiring portion;

[0025] A wire harness is provided adjacent to the connection portion, and the wires away from the connection portion are detachably fixed to the wire harness.

[0026] In some embodiments of the present invention, a wire harness space is formed between the wire harness portion and the housing, and the wire passes through the wire harness space.

[0027] In some embodiments of the present invention, the wire harness includes a connecting segment and a bent segment connected to the connecting segment. The connecting segment is connected to the housing, and the bent segment extends toward the connecting portion. The connecting segment, the bent segment, and the housing together enclose the wire harness space.

[0028] In some embodiments of the present invention, the connecting portion is used to rotatably connect the housing to an external mechanism, and the wiring port of the wiring portion is disposed facing the connecting portion.

[0029] In some embodiments of the present invention, the housing is provided with a wire guide groove, the wire guide groove is disposed adjacent to the connecting portion, one end of the wire guide groove is connected to the wiring port, the wire harness portion is disposed corresponding to the wire guide groove, and the wire harness portion and the wire guide groove together enclose the wire harness space.

[0030] The technical solution of this invention involves setting a chassis and a drive wheel assembly movably connected to the chassis, allowing one side of the drive wheel assembly to movably abut against a support surface. A sensing unit is further installed on the drive wheel assembly, and a sensor is positioned corresponding to the sensing unit. When the drive wheel assembly moves relative to the chassis and the drive wheel abuts against the support surface, the sensing unit and the sensor are spaced apart, preventing the sensing unit from triggering the sensor's signal. When the drive wheel assembly moves to a suspended position relative to the chassis, the drive assembly separates from the support surface, at which point the sensing unit triggers the sensor's signal. The robot vacuum can then perform the next action based on the sensing signal, causing the drive wheel assembly to re-establish contact with the support surface, thus improving the robot vacuum's operational stability. In this way, the technical solution of this invention can sense the state of the rollers in real time, improving the cleaning stability of the robot vacuum. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of the sweeper of the present invention;

[0033] Figure 2 for Figure 1 A partial schematic diagram at point A in the middle;

[0034] Figure 3 for Figure 1 A partial schematic diagram at point B in the middle;

[0035] Figure 4 This is an exploded view of an embodiment of the sweeper of the present invention;

[0036] Figure 5 This is a schematic diagram of the drive wheel assembly of the sweeper of the present invention according to one embodiment;

[0037] Figure 6 This is an exploded view of an embodiment of the sweeping machine of the present invention from a low angle;

[0038] Figure 7 This is an exploded view of an embodiment of the sweeping machine of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of a sensor component of the sweeper of the present invention;

[0040] Figure 9 This is an exploded view of an embodiment of the sweeper of the present invention;

[0041] Figure 10 This is a schematic diagram of one embodiment of the driving structure of the present invention;

[0042] Figure 11 for Figure 10 A partial schematic diagram of point A in the middle;

[0043] Figure 12 This is a schematic diagram of the structure of an embodiment of the wire harness of the present invention;

[0044] Figure 13 This is a schematic diagram of the structure of another embodiment of the wire harness of the present invention.

[0045] Explanation of icon numbers:

[0046] label name label name 100 sweeper 211 Sensing unit 10 chassis 212 First hook 11 Mounting cavity 213 Rotation axis 111 Installation port 22 wheel 112 Avoidance 30 Sensor devices 113 Second hook 31 Sensing surface 12 Operation port 32 transmitter 13 Snap-fit ​​rib 33 receiver 131 Card slot 34 Induction gap 20 Drive wheel assembly 40 Elastic traction element 21 Mounting Case a42 Connecting segment a100 Drive structure a43 Bend section a10 case a44 Harness body a11 Connection part a441 cable tray a12 Through groove a4411 Gaps in the line a20 Power unit a442 Mounting slot a21 Wiring section a45 Flexible components a211 Wiring port a451 Plug gap a30 wire a2011 Installation position a40 harness section a202 wheel a41 Bundle space

[0047] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0050] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0051] This invention proposes a sweeping machine 100.

[0052] Reference Figures 1 to 8 The sweeper 100 proposed in this invention includes:

[0053] Chassis 10;

[0054] A drive wheel assembly 20 is movably connected to the chassis 10, with one side of the drive wheel assembly 20 movably abutting against a support surface. The drive wheel assembly 20 is equipped with a sensing unit 211.

[0055] The sensor 30 is disposed corresponding to the sensing unit 211. The drive wheel assembly 20 is movable relative to the chassis 10 so that the drive wheel assembly 20 abuts against the support surface. The sensing unit 211 is disposed at a distance from the sensor 30. Alternatively, the drive wheel assembly 20 is movable relative to the chassis 10 to a suspended position so that the drive wheel assembly 20 is away from the support surface. The sensing unit 211 triggers the sensing signal of the sensor 30.

[0056] In some embodiments of the present invention, the chassis 10 is further equipped with a drive assembly, an electronic control assembly, a water tank, and a dustbin assembly, and the bottom is also equipped with casters, side brushes, a roller brush, and a mopping structure, so that the sweeper 100 can mop and sweep the ground during movement. The cross-sectional outline of the chassis 10 can be roughly circular or polygonal. This embodiment adopts a circular design. This design ensures that the area of ​​the chassis 10 is large within a limited space, making it easy to install the sweeper 100. On the other hand, it also allows the outer periphery of the sweeper 100 to transition smoothly, avoiding collisions with obstacles during movement.

[0057] It should be noted that the active connection in this embodiment includes an active connection in a shock-absorbing state after connection via a shock absorber, or a rotational connection, or a sliding connection, etc. Any movement of the drive wheel assembly 20 relative to the chassis 10 away from the supporting surface can be understood as an active connection. Furthermore, when the sweeper 100 is placed on the ground, the supporting surface is the ground itself; it can be understood that this supporting surface is the surface that provides support for the sweeper 100. The suspended position can be understood as the relative position of the drive wheel assembly 20 to the chassis 10 when it leaves the supporting surface. In the implementation scenario of a shock absorber connection, it can be understood as the retracted state of the shock absorber; in the case of a rotational or sliding connection, it can be understood as a position moving away from the supporting surface.

[0058] In some embodiments, there are multiple drive wheel assemblies 20, which are spaced apart on the chassis 10. Each drive wheel assembly 20 is equipped with a sensing unit 211, and each sensing unit 211 is equipped with a sensor element 30, thereby determining the suspension state of each drive wheel assembly 20. It is understood that each sensor element 30 independently emits a sensing signal; it will emit a signal whenever the sensing unit of its corresponding drive wheel assembly 20 is triggered. Using multiple drive wheel assemblies 20 makes the sweeping robot 100 move more smoothly and improves the efficiency of cleaning.

[0059] The technical solution of this invention involves setting a chassis 10 and a drive wheel assembly 20 movably connected to the chassis 10, allowing one side of the drive wheel assembly 20 to movably abut against a support surface. A sensing unit 211 is further provided on the drive wheel assembly 20, and a sensor element 30 is positioned corresponding to the sensing unit 211. When the drive wheel assembly 20 moves relative to the chassis 10 and abuts against the support surface, the sensing unit 211 and the sensor element 30 are spaced apart, and the sensing unit 211 cannot trigger the sensing signal of the sensor element 30. When the drive wheel assembly 20 moves relative to the chassis 10 to a suspended position, the drive assembly separates from the support surface, and at this time, the sensing unit 211 triggers the sensing signal of the sensor element 30. The sweeping robot 100 can then perform the next action based on the sensing signal, allowing the drive wheel assembly 20 of the sweeping robot 100 to re-contact the support surface, thus improving the working stability of the sweeping robot 100. In this way, the technical solution of this invention can sense the state of the rollers in real time, improving the cleaning stability of the sweeping robot 100.

[0060] In some embodiments of the present invention, the drive wheel assembly 20 is movably connected to the chassis 10, and the sensor 30 is disposed on the chassis 10. The sensor 30 is a micro switch, and the sensing surface 31 of the micro switch is located along the movement path of the sensing part 211 and is positioned towards the sensing part 211. The sensing part 211 protrudes from the side of the drive wheel assembly 20 away from the support surface. Disposing the sensor 30 on the chassis 10 ensures that the position of the sensing part 211 is relatively fixed, thus improving sensing efficiency. A micro switch is a contact mechanism with a small contact gap and a quick-acting mechanism, which performs switching action with a specified stroke and a specified force. It is covered by a housing, and its exterior has a drive rod (the sensing surface 31 is disposed on the drive rod). Because its contact gap is relatively small, it is called a micro switch, also known as a sensitive switch. When the drive wheel assembly 20 contacts the support surface, the sensing unit 211 and the micro switch are spaced apart. In some implementation scenarios, the support surface is an incline, and the position of the drive wheel assembly 20 in contact with the support surface may change (uphill or downhill). As a result, the sensing unit 211 may move away from or towards the sensor 30. In this case, since the drive wheel assembly 20 is always in contact with the support surface, the micro switch will not be triggered. When the drive assembly separates from the support surface (for example, one wheel 22 is located in a recess or on the edge of a staircase, causing it to be suspended), the sensing unit 211 moves towards the micro switch and touches the drive rod (sensing surface 31), thereby causing the micro switch to emit a touch signal.

[0061] It is understandable that the sweeper 100 can also be equipped with an alarm device, which is electrically connected to the sensor 30. When a touch signal is received, the alarm device emits an alarm signal, allowing the user to manually restart the sweeper 100. Alternatively, the sweeper 100 may also include a robotic arm structure. When a touch signal is received, the robotic arm structure abuts against the support surface, thereby driving the sweeper 100 to move, causing the drive wheel assembly 20 to re-abut against the support surface and resume operation.

[0062] Reference Figure 8 In some embodiments of the present invention, the sensor 30 is a photoelectric switch. The photoelectric switch further includes a transmitter 32 and a receiver 33 disposed opposite to each other, with a sensing gap 34 formed between the transmitter 32 and the receiver 33. The sensing gap 34 is located in the movement path of the sensing part 211, and the sensing part 211 is movably inserted into the sensing gap 34. It is understood that during operation, the transmitter 32 of the photoelectric switch continuously emits light signals to the receiver 33. When the sensing part 211 moves toward the sensing gap 34 of the photoelectric switch and blocks the light signal emitted by the transmitter 32, causing the receiver 33 to be unable to receive the light signal, the photoelectric switch emits a triggered signal.

[0063] In some embodiments, an angle sensor may be provided at the rotational connection between the drive wheel assembly 20 and the chassis 10 to determine whether the drive wheel is suspended by collecting the relative angle between the drive wheel assembly 20 and the chassis 10, and then to send a sensing signal.

[0064] In some embodiments, both the sensing unit 211 and the sensor element 30 are distance sensors, also known as displacement sensors. A distance sensor is a type of sensor used to sense the distance between itself and an object to perform a preset function. Distance sensors can be categorized into various types based on their working principles, such as optical distance sensors, infrared distance sensors, and ultrasonic distance sensors. An infrared distance sensor has an infrared emitter and an infrared receiver. When the infrared light emitted by the emitter is received by the receiver, it indicates a close distance, requiring the screen to be turned off to prevent accidental operation. Conversely, when the receiver does not receive the infrared light emitted by the emitter, it indicates a greater distance. Other types of distance sensors operate on similar principles, determining distance through the emission and reception of certain substances. These substances can be ultrasonic waves, light pulses, etc. Therefore, by determining the distance between the sensing unit 211 and the sensor element 30, it is determined whether the drive wheel assembly 20 is suspended in the air.

[0065] In some embodiments of the present invention, the chassis 10 is provided with a snap-fit ​​position 131, and the sensor element 30 is snap-fitted into the snap-fit ​​position 131. In this embodiment, the snap-fit ​​position 131 can be formed by the chassis 10 being surrounded by opposing snap-fit ​​ribs 13, thereby placing the sensor element 30 within the gaps of the snap-fit ​​ribs 13. This arrangement facilitates the installation of the sensor element 30 and makes it easier for the sensor element 30 to interact with the sensing unit 211 and emit a sensing signal.

[0066] Reference Figures 5 to 7 In some embodiments of the present invention, the drive wheel assembly 20 includes a mounting housing 21 and a wheel 22 rotatably connected to the mounting housing 21. The mounting housing 21 is rotatably connected to the chassis 10. The wheel 22 is movably abutted against a support surface. The sensing unit 211 is disposed on the outside of the mounting housing 21. The sweeper 100 is defined to have mutually perpendicular length, width, and height directions. The mounting housing 21 is defined to rotate relative to the chassis 10 along a rotation axis. The wheel 22 and the rotation axis are spaced apart in the length direction. The sensing unit 211 is located between the wheel 22 and the rotation axis.

[0067] In this embodiment, the mounting shell 21 allows the wheel 22 to rotate relative to it, thereby driving the sweeper 100 to move through friction with the supporting surface. The mounting shell 21 is rotatably connected to the chassis 10, allowing the wheel 22 to adjust appropriately according to the angle of the supporting surface, ensuring that the wheel 22 supports the supporting surface in most situations. A spring can also be installed at the rotatable connection between the mounting shell 21 and the chassis 10, driving the mounting shell 21 towards the supporting surface to ensure the wheel 22 is always supported. The sensing unit 211 is positioned between the rotation axis and the wheel 22, i.e., between the rotation center and the support point. This prevents the movement trajectory of the sensing unit 211 from being too large when the mounting shell 21 rotates relative to the chassis 10, ensuring the sensing effectiveness of the sensing unit 211 and saving internal space in the sweeper 100.

[0068] Reference Figures 4 to 7 In some embodiments of the present invention, the sensing unit 211 is rod-shaped and extends from the mounting shell 21 in a direction away from the support surface. In this embodiment, the sensing unit 211 can also be understood as being located on the side of the mounting shell 21 away from the wheel 22. This arrangement ensures that the force direction of the mounting shell 21 is different when the wheel 22 contacts the support surface at different positions, thereby allowing the sensing unit 211 to respond promptly. Furthermore, by setting the sensing unit 211 to a rod shape, it is ensured that the sensing unit 211 still has sufficient length when the wheel 22 is suspended in the air, thereby activating the sensor 30 and ensuring real-time detection of the suspension state of the wheel 22.

[0069] Reference Figure 6 In some embodiments of the present invention, the chassis 10 is provided with a mounting cavity 11, the mounting cavity 11 having a mounting opening 111 and a clearance opening 112, the outer shell being rotatably disposed within the mounting cavity 11, at least a portion of the wheels 22 extending out of the mounting opening 111, the sensing part 211 passing through the clearance opening 112, the sensor element 30 being disposed adjacent to the clearance opening 112, and the sweeper 100 further being provided with an elastic traction member 40, the elastic traction member 40 connecting the chassis 10 and the mounting shell 21. By providing the mounting cavity 11, the drive wheel assembly 20 can be protected, ensuring the working stability of the drive wheel assembly 20. It is understood that one of the mounting shell 21 and the cavity wall of the mounting cavity 11 can be provided with a rotating shaft 213, and the other of the outer shell and the cavity wall of the mounting cavity 11 can be provided with a rotating hole, achieving a rotatable connection between the two through a shaft-hole fit.

[0070] In this embodiment, the wheel 22 extends out of the mounting opening 111, facilitating support for the sweeper 100. The sensor 211 passes through the clearance opening 112, which, on the one hand, restricts the rotation angle of the wheel 22 to a certain extent, improving the working stability of the sweeper 100; on the other hand, the clearance opening 112 guides the sensor 211, allowing it to move along a predetermined path, improving the triggering efficiency of the sensor 30. Furthermore, by providing an elastic traction member 40 connecting the chassis 10 and the outer shell, the extent to which the wheel 22 extends out of the mounting opening 111 is controlled, ensuring effective support of the wheel 22 on the horizontal support surface.

[0071] In some embodiments of the present invention, the mounting shell 21 is provided with a first hook 212 adjacent to the sensing part 211, and the cavity wall of the mounting cavity 11 is provided with a second hook 113. The elastic traction member 40 is elastically connected to the first hook 212 and the second hook 113. In this embodiment, the elastic traction member 40 can be a spring, one end of which is arranged in a ring shape or a hook shape, and the two ends of the spring are respectively fastened to the first hook 212 and the second hook 113, thereby limiting the relative position of the mounting shell 21 and the chassis 10 by the elastic traction member 40. Furthermore, the first hook 212 can be integrally formed with the mounting shell 21, and the second hook 113 can be integrally formed with the cavity wall (chassis 10) of the mounting cavity 11, thereby improving structural stability. In some embodiments of the present invention, the second hook 113 is provided corresponding to the wheel 22; this arrangement ensures that the length of the elastic traction member 40 is not too long, thus preventing the lever arm from becoming too long and guaranteeing the traction effect on the mounting shell 21. Furthermore, the chassis 10 is also provided with an operation port 12 communicating with the mounting cavity 11, and the operation port 12 is disposed adjacent to the second hook 113. Since the second hook 113 is disposed inside the mounting cavity 11, in order to facilitate the installation of the elastic traction member 40 on the second hook 113, the operation port 12 adjacent to the second hook 113 is provided so that the user can pass through the operation port 12 to fix it in a fixed state, and can also install the elastic traction member 40 on the second hook 113 through the operation port 12.

[0072] This invention proposes a driving structure a100.

[0073] Reference Figures 9 to 13 The driving structure a100 proposed in this invention includes:

[0074] The housing a10 is provided with a connecting part a11 for connecting to an external mechanism, and the connecting part a11 can drive the housing a10 to move.

[0075] A power unit a20 is mounted on the housing a10 and has a wiring portion a21 for connecting to an external circuit.

[0076] A wire a30, one end of which is electrically connected to the wiring part a21;

[0077] A wire harness portion a40 is provided adjacent to the connecting portion a11, and the wire a30, which is away from the wiring portion a21, is detachably fixed to the wire harness portion a40.

[0078] In this embodiment, the housing a10 facilitates the installation of the power unit a20 and ensures the transmission and operational stability of the power unit a20. It is understood that the housing a10 can be made of metal (such as stainless steel, aluminum, aluminum alloy, copper, copper alloy, iron, or iron alloy), plastic (such as hard plastics like ABS, POM, PS, PMMA, PC, PET, PBT, or PPO), or other alloy materials. Alternatively, a mixture of metal and plastic can be used, as long as it effectively improves the stability of the housing a10. This further enhances the stability of the housing a10, thereby effectively improving its practicality, reliability, and durability.

[0079] The power unit a20 can be a motor or other device used to generate power. When the power unit a20 is energized, it can act as a power source to drive the movement of other components.

[0080] It should be noted that in one implementation scenario, the connecting part a11 can be a shock-absorbing mechanism. The power unit a20 is connected to the external mechanism through the shock-absorbing mechanism. During operation, due to the shock-absorbing function of the shock-absorbing mechanism, the power unit a20 moves while the external mechanism does not. In this case, the movement of the power unit may easily cause the wire a30 to become entangled or affect the work of other departments. Therefore, the wire harness a40 can be provided to restrain the wire a30. By placing the wire harness a40 adjacent to the connecting part a11, the wire harness a40 can restrain the wire a30 immediately, ensuring the connection effect between the wire a30 and the power unit a20 and preventing the wire a30 from falling off due to movement.

[0081] In a real-time scenario, the connecting part a11 can be a connecting rod, which can drive the housing a10 to move. Similarly, during the movement, the power unit a20 moves while the external mechanism does not move. The wire harness a40 can also ensure the fixation of the wire a30 and improve the working stability of the drive structure a100.

[0082] The technical solution of this invention involves setting up a housing a10, with a connecting part a11 for connecting to an external mechanism within the housing a10, and then mounting a power unit a20 on the housing a10. A wiring part a21 for connecting to an external circuit is provided on the power unit a20, and one end of a wire a30 is electrically connected to the wiring part a21. The free end of the wire a30 is detachably fixed to a wire harness a40. When the connecting part a11 drives the housing a10 to move, the power unit a20, the wire a30, and the wire harness a40 all move simultaneously. However, because the free end of the wire a30 is fixed to the wire harness a40, the wire a30 is secured and cannot affect other components, preventing the wire a30 from tangling or falling off relative to the power unit a20, thus ensuring the stability of the drive structure a100. In this way, the technical solution of this invention can effectively secure the wire a30, prevent the wire a30 from affecting other components, prevent the wire a30 from falling off, and facilitate user operation.

[0083] Reference Figure 11 In some embodiments of the present invention, a wire-binding space a41 is formed between the wire-binding portion a40 and the housing a10, and the wire a30 passes through the wire-binding space a41. By forming the wire-binding space a41 between the wire-binding portion a40 and the housing a10, the relative position of the wire a30 and the housing a10 is fixed, thereby ensuring that the relative position of the wire a30 and the connector a21 is fixed, resulting in a good connection between the wire a30 and the connector a21. Furthermore, it facilitates reducing the stress on the wire-binding portion a40 (which can be borne by the housing a10), improving the wire-binding stability of the wire-binding portion a40.

[0084] In some embodiments of the present invention, the wire harness portion a40 includes a connecting segment a42 and a bent segment a43 connected to the connecting segment a42. The connecting segment a42 is connected to the housing a10, and the bent segment a43 extends toward the connecting portion a11. The connecting segment a42, the bent segment a43, and the housing a10 together enclose the wire harness space a41. In this embodiment, connecting the wire harness portion a40 to the housing a10 improves the production efficiency of the wire harness portion a40 and ensures a better wire harnessing effect. By setting the bent segment a43, the structural strength of the wire harness portion a40 is reduced to produce a certain deformation, thereby facilitating the user to place the wire a30 in the wire harness space a41 and facilitating an interference fit with the wire a30, improving the fixing effect of the wire a30. It is understood that the cross-sectional profile of the bent segment a43 can be V-shaped, N-shaped, M-shaped, U-shaped, S-shaped, L-shaped, W-shaped, etc. In the above embodiments, the bent segment a43 can have a certain degree of extensibility, thereby ensuring an interference fit with the conductor a30 and improving the fixing effect of the conductor a30. The end of the bent segment a43 away from the connecting segment a42 extends towards the connecting part a11, so that the conductor a30 is fixed near the vibration source, improving the fixing efficiency.

[0085] In some embodiments of the present invention, the end of the bent section a43 facing away from the connecting section a42 is spaced apart from the housing a10, forming an installation notch. That is, in addition to directly passing the wire a30 through the wire bundle space a41, the wire a30 can also be assembled into the wire bundle space a41 through the installation notch, improving the installation efficiency of the wire a30. Furthermore, this arrangement further improves the deformability of the bent section a43, making it easier for the user to place the wire a30 in the wire bundle space a41, and facilitating an interference fit with the wire a30, thus improving the fixing effect of the wire a30.

[0086] Reference Figure 10 , Figure 11 In some embodiments of the present invention, the connecting portion a11 is used to rotatably connect the housing a10 to the external mechanism, and the wiring port a211 of the wiring portion a21 is disposed facing the connecting portion a11. Since the housing a10 and the external mechanism are rotatably connected through the connecting portion a11, it can be understood that the closer to the rotatable connection, the shorter the movement distance of the mechanism. That is, the amplitude of movement of the wire a30 near the connecting portion a11 will be relatively small. At this time, distributing the wiring port a211 towards the connecting portion a11 can further shorten the extension distance of the wire a30, ensuring that the amplitude of movement of the wire a30 is small and reducing the probability of the wire a30 getting tangled. Furthermore, in this embodiment, the wire harness portion a40 being disposed near the connecting portion a11 can also fix the wire a30 at a position with a small amplitude of movement, reducing the probability of the wire a30 getting tangled and the probability of connection failure.

[0087] Reference Figure 11 In some embodiments of the present invention, the housing a10 is provided with a wire passage groove a12, which is disposed adjacent to the connecting portion a11. One end of the wire passage groove a12 is connected to the wiring port a211. The wire binding portion a40 is disposed corresponding to the wire passage groove a12, and the wire binding portion a40 and the wire passage groove a12 together enclose the wire binding space a41. In this embodiment, by providing the wire passage groove a12 to guide the wire a30 extending out of the wiring port a211, the wire a30 can be initially positioned by the wire passage groove a12 after connecting to the connecting portion a21 and extending out of the wiring port a211, thereby improving the binding effect on the wire a30. Furthermore, it is understood that the wire harness space a41 is a portion of the wire passage groove a12. At this time, the wire a30 is guided within the wire passage groove a12 and fixed at the location where the wire harness part a40 is set. The wire a30 extending out of the wire harness space a41 is further guided by the wire passage groove a12, effectively achieving the limiting of the wire a30 on the housing a10 and ensuring the working stability of the drive structure a100.

[0088] Reference Figure 12 , Figure 13 In some embodiments of the present invention, the wire harness portion a40 includes:

[0089] The cable bundle body a44, wherein the cable bundle body a44 is provided with a cable passage a441 penetrating the two opposite surfaces of the cable bundle body a44; and

[0090] A flexible member a45 is connected to the wire harness body a44. The flexible member a45 extends toward the wire passage a441 and blocks the wire passage a441. The flexible member a45 forms a plug-in gap a451 in the wire passage a441. The plug-in gap a451 is used to guide the wire a30 to the wire passage a441. The flexible member a45 is used to abut against the outer surface of the wire a30.

[0091] In one embodiment of this application, the cable bundle body a44 is generally configured as an arched straight column with an arc-shaped side and at least one straight side. It is understood that the arc-shaped side extends to form an arc surface, facilitating its use in conjunction with other mounting structures to fix the drive structure a100. The cable passage a441 penetrates the side of the cable bundle body a44, and its shape can be circular or polygonal. Optionally, the shape of the cable passage a441 is approximately the same as the side shape of the cable bundle body a44, thereby ensuring the structural stability of the cable bundle body a44.

[0092] The flexible component a45 can be integrally connected to the cable bundle body a44 or detachably connected, as long as it can extend to and seal the cable passage a441. The flexible component a45 can be made of rubber (natural or synthetic rubber can be selected). Rubber is a completely amorphous polymer, elastic at room temperature, capable of large deformation under small external forces, and returning to its original shape after the force is removed. This allows the flexible component a45 to effectively contact the outer surface of the wire a30, thus providing good fixation for the wire a30. Alternatively, the flip cover can be made of silicone (organic or inorganic silicone can be selected). Silicone has good chemical stability and flexibility, similarly allowing the flexible component a45 to effectively contact the outer surface of the wire a30, thus providing good fixation for the wire a30. In one embodiment of this application, the flexible member a45 can form a plug-in gap a451 together with the wire passage a441 of the wire body a44. At this time, since the flexible member a45 can clamp and seal the wire a30 from one side, the clamping and sealing effect of the wire a30 with a small radial length is better, and the production cost can be greatly reduced.

[0093] It should be noted that, in this embodiment, the cable passage a441 can be a closed-loop cable passage a441. When it is necessary to insert the wire a30, the wire a30 can be inserted into the cable passage a441 and fixed along the insertion gap a451 in the axial direction of the cable passage a441. In one embodiment, the drive structure a100 can be used to fix the wire a30 of the sweeper 100.

[0094] Reference Figure 12 and Figure 13 In one embodiment of this application, the number of flexible members a45 is at least two, and the two flexible members a45 are arranged opposite to each other to form the insertion gap a451; the wire passage a441 penetrates one side wall of the wire bundle body a44 and forms an inlet notch a4411, which connects to the insertion gap a451. By providing flexible members a45 on opposite sides of the wire passage a441, the wire a30 inserted in the wire passage a441 can be abutted by the flexible members a45 on both sides, thus allowing the drive structure a100 to better clamp and seal the wire a30 with a larger radial length, facilitating user operation. In this embodiment, the wire passage a441 is notched, allowing the wire a30 to extend into the wire passage a441 from the radial direction along the depth direction of the notch, thereby facilitating the installation of the wire a30. Placing the flexible element a45 within the notch helps save material on the flexible element a45 and achieves the best sealing effect. The flexible element a45 can be plate-shaped, thus facilitating the sealing of the cable passage a441.

[0095] In an embodiment of the present application, the number of the flexible members a45 is at least four. Two of the flexible members a45 and the other two flexible members a45 are oppositely arranged within the wire passing port a441, and the flexible members a45 on the same side of the wire passing port a441 are arranged adjacent to each other. In this embodiment, when the number of the flexible members a45 is at least four, the arrangement of the flexible members a45 within the wire passing port a441 is generally in a "field" shape, thereby forming an insertion gap a451 that is generally in a "cross" shape. The guiding nozzle can be connected to the end portion in the transverse or longitudinal direction of the insertion gap a451, and both can guide the wire a30 well. The insertion gap a451 formed by setting at least four flexible members a45 can enable the flexible members a45 to abut against the outer surface of the wire a30 from at least four directions, so as to better fix the wire a30.

[0096] Referring to Figure 12 and Figure 13 , in an embodiment of the present application, the number of the flexible members a45 is at least six. Three of the flexible members a45 and the other three flexible members a45 are oppositely arranged within the wire passing port a441, and the flexible members a45 on the same side of the wire passing port a441 are arranged adjacent to each other. In this embodiment, when the number of the flexible members a45 is at least four, an insertion gap a451 that is generally in a "well" shape is formed. The guiding nozzle can be connected to the end portion in the transverse or longitudinal direction of the insertion gap a451, and both can guide the wire a30 well. The insertion gap a451 formed by setting at least four flexible members a45 can enable the flexible members a45 to abut against the outer surface of the wire a30 from at least six directions, and the space for accommodating the wire a30 is increased. When the wire passing port a441 accommodates a wire a30 with a larger diameter, it still has a good accommodation effect. Thus, the wire a30 can be better fixed.

[0097] In some embodiments of the present invention, referring to Figure 13 , in an embodiment of the present application, an installation groove a442 is formed on the outer peripheral surface of the wire bundling body a44背离 the wire passing port a441. The installation groove a442 extends along the outer circumference of the wire bundling body a44. The housing a10 is provided with a hook, and the wire bundling body a44 is fixed within the hook. With such a setting, the structure is simple and it is convenient for molding. Setting the installation groove a442 also facilitates increasing the contact area between the hook and the installation groove a442, improving the fixing effect on the wire bundling body a44, and further improving the fixing effect on the wire a30.

[0098] Referring to Figure 9 , Figure 10The present invention also proposes a sweeping machine 100, which includes a chassis 10, wheels a202, and a drive structure a100. The drive structure a100 includes: a housing a10, the housing a10 having a connecting part a11 for connecting to an external mechanism, the connecting part a11 being able to drive the housing a10 to move; a power device a20, the power device a20 being mounted on the housing a10, the power device a20 having a wiring part a21 for connecting to an external circuit; and a wire a30, the wire a30... One end of the wire is electrically connected to the wiring portion a21; a wire harness portion a40 is disposed adjacent to the connecting portion a11, and the wire a30 away from the wiring portion a21 is detachably fixed to the wire harness portion a40; the wheel a202 is drivenly connected to the power device a20; the chassis 10 is provided with a mounting position a2011, the wheel a202 and the drive structure a100 are disposed in the mounting position a2011, and the connecting portion a11 of the drive structure a100 is movably connected to the chassis 10. Since this sweeping machine 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0099] In some embodiments of the present invention, one of the chassis 10 and the connecting portion a11 is provided with a rotating shaft, and the other of the chassis 10 and the connecting portion a11 is provided with a rotating hole. The rotating shaft is inserted into the rotating hole so that the drive structure a100 is rotatably connected to the chassis 10. In this embodiment, the shaft hole allows the drive structure a100 to rotate relative to the chassis 10 (it can be understood that the axis of the rotating shaft and the rotating hole is the axis of rotation). At this time, an elastic traction member 40 can be further provided so that the elastic traction member 40 connects the housing a10 and the chassis 10, ensuring the working stability of the sweeper 100.

[0100] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sweeping machine, characterized in that, include: Chassis; A drive wheel assembly is movably connected to the chassis, one side of the drive wheel assembly is movably abutting against a support surface, and the drive wheel assembly is provided with a sensing unit; as well as A sensor is provided corresponding to the sensing unit. The drive wheel assembly is movable relative to the chassis so that the drive wheel assembly abuts against the support surface. The sensing unit is spaced apart from the sensor. Alternatively, the drive wheel assembly is movable relative to the chassis to a suspended position so that the drive wheel assembly moves away from the support surface. The sensing unit triggers the sensing signal of the sensor. The sensing element protrudes from the side of the drive wheel assembly opposite to the support surface; The drive wheel assembly includes a mounting housing and a wheel rotatably connected to the mounting housing. The mounting housing is rotatably connected to the chassis, and the mounting housing is defined to rotate relative to the chassis along a rotation axis. The sensing unit is located between the wheel and the rotation axis. The mounting housing has a connecting part for connecting to an external mechanism, and the connecting part can drive the mounting housing to move. A power unit is mounted on the mounting housing, and the power unit has a wiring part for connecting to an external circuit. One end of a wire is electrically connected to the wiring part. A wire harness is disposed adjacent to the connecting part, and the wire away from the wiring part is detachably fixed to the wire harness. The wire harness includes a wire harness body, which has a wire passage opening that passes through two opposite surfaces of the wire harness body. A flexible member is connected to the wire harness body, extends toward the wire passage opening and seals the wire passage opening, and forms a plug-in gap in the wire passage opening. The plug-in gap is used to guide the wire to the wire passage opening, and the flexible member is used to abut against the outer surface of the wire. The sensor is mounted on the chassis and is a micro switch. The sensing surface of the micro switch is located along the motion path of the sensing part.

2. The sweeper as described in claim 1, characterized in that, The wheel is movably abutting against the support surface, and the sensing unit is located on the outside of the mounting housing; The sweeper is defined to have mutually perpendicular length, width, and height directions, and the wheels and the axis of rotation are spaced apart in the length direction.

3. The sweeper as described in claim 2, characterized in that, The sensing element is rod-shaped and extends from the mounting housing in a direction away from the support surface.

4. The sweeper as described in claim 3, characterized in that, The chassis is provided with a mounting cavity, which has a mounting opening and a clearance opening. The mounting shell is rotatably disposed in the mounting cavity. At least part of the wheels extend out of the mounting opening. The sensing part passes through the clearance opening. The sensor is disposed adjacent to the clearance opening. The sweeper is also provided with an elastic traction member, which connects the chassis and the mounting shell.

5. The sweeper as described in claim 4, characterized in that, The mounting housing is provided with a first hook adjacent to the sensing part, and the cavity wall of the mounting cavity is provided with a second hook. The elastic traction member is elastically connected to the first hook and the second hook.

6. The sweeper as described in claim 5, characterized in that, The second hook is provided corresponding to the wheel; And / or, the chassis is further provided with an operating port that communicates with the mounting cavity, and the operating port is located adjacent to the second hook.

7. The sweeper as described in claim 1, characterized in that, The chassis is provided with a snap-fit ​​position, and the sensor is snap-fitted into the snap-fit ​​position; And / or, the number of drive wheel assemblies and the number of sensor devices are both multiple, the multiple drive wheel assemblies are spaced apart on the chassis, each drive wheel assembly is provided with a sensing part, and one sensing part corresponds to one sensor device.

8. The sweeper as described in claim 1, characterized in that, The sweeper also includes an alarm device, which is electrically connected to the sensor.

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