window wiper

Abstract

The utility model provides a window cleaning machine for removing the particle on the plate. The window cleaning machine comprises: a base; at least one cleaning device arranged on the base; and a driving module comprising at least one rotating shaft and at least one rotating wheel, wherein the rotating wheel is defined with a fixed groove, the shape of the rotating shaft is matched with the shape of the fixed groove, the rotating shaft is inserted into the fixed groove, and the shape of the rotating shaft and the fixed groove is a polygon with more than four sides. The window cleaning machine of the utility model can reduce the damage of the rotating shaft and the fixed groove through the improved design of the driving module.

Description

Technical Field

[0001] This utility model belongs to the field of window cleaning machines, specifically relating to a window cleaning machine, and more particularly to a window cleaning machine that includes a water channel. Background Technology

[0002] Figure 1 This shows an exploded view of an existing window cleaning machine, specifically the one described in Chinese Patent Publication No. CN112075872A. (The image is missing from the original text.) Figure 1 As shown, a conventional window cleaning machine 100 is used to remove particles from a panel and includes a first cleaning device 110, a second cleaning device 120, a drive module 400, a spraying module 200, and a control system 495. The first cleaning device 110 rotates on the panel, and the second cleaning device 120 rotates on the panel. The first cleaning device 110 includes a cleaning ring 112 and a cleaning material 111 sleeved on the bottom surface of the cleaning ring 112. The second cleaning device 120 includes a cleaning ring 122 and a cleaning material 121 sleeved on the bottom surface of the cleaning ring 122. The drive module 400 is connected to the first cleaning device 110 and the second cleaning device 120 to drive the first cleaning device 110 and the second cleaning device 120, causing at least one of them to rotate. More specifically, the drive module 400 includes a connecting device 410 connected between the first cleaning device 110 and the second cleaning device 120. The drive module 400 drives the first cleaning device 110 and the second cleaning device 120, thereby causing the second cleaning device 120 to rotate in a first rotation direction during a first period, so as to generate a first torque in the connecting device 410 of the drive module 400, and through the first torque, causing the connecting device 410 to swing in a second rotation direction opposite to the first rotation direction.

[0003] In one embodiment, the window cleaning machine 100 further includes a compressor module 496. A first cleaning device 110 defines a first space for the panel, and a second cleaning device 120 defines a second space for the panel. The compressor module 496 is located in the pump housing space 431 defined by the connecting device 410, and the compressor module 496 is connected to the first space and the second space to draw air from the first space and the second space, creating a negative pressure in the first space and the second space, thereby causing the window cleaning machine 100 to be adsorbed onto the panel.

[0004] The spray module 200 sprays a liquid onto the panel to wet the cleaning materials 111 and 121, thereby facilitating the removal of dirt from the panel. The control system 495 is coupled to the spray module 200 and the drive module 400, and controls the operation of both. The window cleaning machine 100 also includes a housing 493. The housing 493 houses the drive module 400 and the control system 495. The housing 493 is connected to the first cleaning device 110 and the second cleaning device 120 via a connection device 410 of the drive module 400, and is also connected to the spray module 200. The housing 493 houses the spray module 200. A receiving space is defined between the housing 493 and the drive module 400 for housing the spray module 200 and the control system 495. In one embodiment, the shape of the top surface of the housing 493 and the shape of the cover 211 of the spray module 200 are matched to each other, so that the window cleaning machine 100 has a complete top surface and the protrusion 214 of the spray module 200 protrudes from the housing 493.

[0005] Figure 2 This shows an exploded view of the drive module of an existing cleaning machine. (Example:) Figure 2 As shown, the drive module 400 includes a connecting device 410, two transmission devices 420, two motors 440, two rotating wheels 411, and an air guide cover 430. The connecting device 410 can be a base 413. The first cleaning device 110 and the second cleaning device 120 are respectively connected to or fixed to the two rotating wheels 411. An exhaust space is defined between the base 413 and the air guide cover 430, and the two transmission devices 420 and the two motors 440 are disposed between the base 413 and the air guide cover 430. The motors 440 are respectively connected to the rotating wheels 411 through the transmission devices 420 to drive the rotating wheels 411 to rotate, thereby causing the first cleaning device 110 or the second cleaning device 120 to rotate. In one embodiment, each transmission device 420 includes a geared wheel 421, a shaft 422, a plurality of gears 423, a turbine 424, and a worm gear 425. Motor 440 connects to and drives worm gear 425 to rotate. The long axis of worm gear 425 is parallel to the bottom surface of window cleaning machine 100. Worm gear 425 drives turbine 424 to rotate and changes its rotation direction. The rotation axis of turbine 424 is perpendicular to the bottom surface of window cleaning machine 100. Multiple gears 423 are connected to turbine 424 and placed inside gear fixing wheel 421. Multiple gears 423 are sleeved on multiple support shafts 439 protruding from the top side of shaft 422. Rotating wheel 411 is sleeved on rotating shaft 429 protruding from the bottom side of shaft 422.

[0006] The existing window cleaning machine 100 has a housing 493 with an accommodating opening, and the housing 493 and the base 413 form an accommodating space. The spraying module 200 is a modular unit and is located in this accommodating space. The position of the spray nozzle is restricted.

[0007] Chinese patent publications CN116746829A and CN117179613A disclose a spray module structure for a window cleaning machine, in which a liquid tank is placed on the base and covered by a casing. However, the drawback of this design is that when the liquid tank leaks, the leak cannot be detected immediately because the base and casing are sealed, potentially causing damage to the internal circuitry or electronic components of the window cleaning machine. Utility Model Content

[0008] The purpose of this utility model is to provide a window cleaning machine with an improved drive module design, which can reduce damage to the rotating shaft and fixing groove.

[0009] This utility model provides a window cleaning machine for removing particles from a panel. The window cleaning machine includes: a base; at least one cleaning device disposed on the bottom side of the base for defining at least one space with the panel; a compressor module connected to the at least one space for drawing air from the at least one space to create a negative pressure in the at least one space, thereby causing the cleaning device to be adsorbed onto the panel; and a drive module including at least one rotating shaft and at least one rotating wheel, wherein the at least one rotating wheel is connected to the at least one cleaning device and defines a fixing groove, the shape of the rotating shaft matches the shape of the fixing groove, the rotating shaft is inserted into the fixing groove, and the drive module drives the rotating wheel to rotate by rotating the rotating shaft, wherein the shape of the rotating shaft and the fixing groove is a polygon with more than four sides.

[0010] In one embodiment, the drive module drives the rotating wheel to rotate by rotating the rotating shaft, and the rotating shaft and the fixing groove are made of plastic.

[0011] In one embodiment, no metal reinforcing ring is provided between the rotating shaft and the fixed groove.

[0012] In one embodiment, the rotating shaft is shaped to have multiple teeth and to distribute the magnitude of the torque.

[0013] In one embodiment, the rotating shaft is located on the drive module and exposed on the bottom side of the base.

[0014] In one embodiment, the rotating shaft is shaped like a gear with at least five teeth.

[0015] In one embodiment, when the rotating shaft is inserted into the fixing groove, the contact area between the rotating shaft and the fixing groove is greater than the contact area between the quadrilateral rotating shaft and its corresponding fixing groove.

[0016] In one embodiment, at least one of the cleaning devices includes a first cleaning device and a second cleaning device, and the two rotating shafts included in the drive module are respectively connected to the first cleaning device and the second cleaning device.

[0017] In one embodiment, the window cleaning machine further includes a housing covering the base to form an accommodating space, in which the drive module is disposed.

[0018] Through the above design, the window cleaning machine of this utility model has an improved drive module structure. The shape of the rotating shaft is a polygon with more than four sides, preferably a gear shape containing at least five teeth, and this shape matches the fixing groove of the rotating wheel. Therefore, the multiple teeth can distribute the torque without the need for an additional metal reinforcing ring, which can still reduce damage between the rotating shaft and the fixing groove, thereby improving the durability of the product. Attached Figure Description

[0019] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0020] Figure 1 An exploded view of an existing window cleaning machine.

[0021] Figure 2 This is an exploded view of the drive module of an existing cleaning machine.

[0022] Figure 3 This is a perspective view of a window cleaning machine according to an embodiment of the present invention.

[0023] Figure 4A for Figure 3 A perspective view of the window cleaning machine from another angle in the embodiment.

[0024] Figure 4B This is an exploded view of the base and cleaning device according to an embodiment of the present invention.

[0025] Figure 5 This is a perspective view of the bottom side of the window cleaning machine's casing.

[0026] Figure 6 This is a 3D view of the spray module and its cap.

[0027] Figure 7 This is a schematic diagram of a liquid-collecting unit according to an embodiment of the present invention.

[0028] Figure 8 This is an exploded view of a spraying unit according to an embodiment of the present invention.

[0029] Figure 9 This is a cross-sectional view of a spraying unit in the form of a machine base according to an embodiment of the present invention.

[0030] Figure 10A This is a perspective view of the rotation axis of the drive module according to an embodiment of the present invention.

[0031] Figure 10B This is a perspective view of the rotating wheel of the drive module according to an embodiment of the present invention.

[0032] Figure 11 This shows a bottom view of the rotation axis of the drive module according to an embodiment of the present invention.

[0033] Explanation of icon numbers:

[0034] 100: Window cleaning machine

[0035] 110: First cleaning device

[0036] 111: Cleaning materials

[0037] 112: Cleaning ring

[0038] 120: Second cleaning device

[0039] 121: Cleaning materials

[0040] 122: Cleaning ring

[0041] 200: Spraying Module

[0042] 211: Capping

[0043] 214: Protrusion

[0044] 400: Driver Module

[0045] 410: Connecting device

[0046] 411: Rotating wheel

[0047] 413: Base

[0048] 420: Transmission device

[0049] 421: Gear fixed wheel

[0050] 422: Axis

[0051] 423: Gear

[0052] 424: Turbo

[0053] 425: Wormstock

[0054] 429: Rotation axis

[0055] 430: Air vent cap

[0056] 431: Pump housing space

[0057] 439: Support axis

[0058] 440: Motor

[0059] 493: Shell

[0060] 495: Control System

[0061] 496: Compressor Module

[0062] 500: Window cleaning machine

[0063] 511: First Cleaning Unit

[0064] 512: Second Cleaning Device

[0065] 520: Spraying Module

[0066] 530: Base

[0067] 532: Opening

[0068] 540: Outer shell

[0069] 541: Shell Body

[0070] 542: Liquid storage tank

[0071] 543: Capping

[0072] 543a: Liquid reservoir cap

[0073] 545: Opening

[0074] 550: Spraying Module

[0075] 551: Delivery pipe

[0076] 552: Spraying Unit

[0077] 553: Connecting pipe

[0078] 590: Driver Module

[0079] 591: Rotating Wheel

[0080] 592: Rotation axis

[0081] 593: Fixing slot

[0082] 608: Liquid suction unit

[0083] 610: Liquid outlet

[0084] 612: Substrate

[0085] 613: Vibrating plate

[0086] 618: Wire

[0087] 621: Auxiliary tank

[0088] 622: Liquid tank cap

[0089] 622a: Opening

[0090] 622b: Open

[0091] 623: Sealing assembly

[0092] 624: Waterproof components Detailed Implementation

[0093] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0094] Figure 3 This image shows a perspective view of a window cleaning machine according to an embodiment of the present invention. Figure 4A show Figure 3 A perspective view of the window cleaning machine from another angle in the embodiment. Figure 4B This is an exploded view of the base and cleaning device according to an embodiment of the present invention. Figure 3 , Figure 4A and Figure 4B As shown, according to an embodiment of the present invention, a window cleaning machine 500 is provided for removing particles from a panel, and includes a first cleaning device 511, a second cleaning device 512, a drive module 590, a spraying module 550, and a control system (not shown). In some embodiments, these components may employ, for example, components from the prior art. The differences between the structure of the present invention and the prior art will be described in more detail below. Figure 3 As shown, in the window cleaning machine 500, the outer casing 540 is mounted on the base 530, forming an accommodating space for accommodating the drive module and control system (not shown). The first cleaning device 511 and the second cleaning device 512 are located on the bottom side of the base 530, and the drive module causes the first cleaning device 511 and the second cleaning device 512 to rotate, thereby removing particles from the cleaning plates.

[0095] like Figure 4A and Figure 4B As shown, the drive module 590 is located in the base 530 of the window cleaning machine 500, and the rotating shaft 592 of the drive module 590 is exposed on the bottom side of the base 530 for connecting the first cleaning device 511 and the second cleaning device 512. The spraying module 550 is disposed in the base 530 and partially exposed on the bottom side of the base 530, and sprays cleaning liquid S1 onto the bottom side of the base 530. Figure 4BAs shown, the bottom surface of the base 530 defines at least two openings 532, and the spraying modules 550 are respectively disposed in these openings 532 for allowing the liquid tank cover 622 of these spraying units 552 (as shown) to be connected. Figure 8 (As shown) These openings 532 are exposed.

[0096] Figure 5 A perspective view showing the bottom side of the window cleaning machine's casing. (Example) Figure 5 As shown, the outer casing 540 includes a casing body 541 and a liquid storage tank 542. In one embodiment, the liquid storage tank 542 is directly fixed to the casing body 541 using a fixing component. The liquid storage tank 542 forms a sealed space with a water inlet for storing water and is located within the accommodating space defined by the outer casing 540 and the base 530. In this embodiment, water needs to be added through the through-hole of the outer casing 540 and the water inlet of the liquid storage tank 542.

[0097] In one embodiment, preferably, the liquid storage tank 542 does not form a sealed space, and the outer casing 540 also includes a cap 543 (e.g., Figure 3 As shown, the liquid storage tank 542 and the cover 543 form a receiving space for storing cleaning fluid. The liquid storage tank 542 is fixed to the housing body 541. In a preferred embodiment, the housing body 541 and the liquid storage tank 542 are integrally formed by injection molding. In the prior art, when it is necessary to disassemble the housing of the window cleaning machine, it is often necessary to remove the water inlet cap (corresponding to the liquid storage tank cap 543a of this utility model), which will result in the water tank inside the base being in a non-sealed state. Even if the water pipe is not removed, the water in the tank may still leak during disassembly, which may damage the internal circuit board. However, by fixing the liquid storage tank 542 to the housing body 541, it is not necessary to remove the liquid storage tank cap 543a or the water pipe, which makes it easier to prevent liquid leakage and entry into the interior of the window cleaning machine 500. Preferably, the shapes of the upper surfaces of the housing body 541 and the cover 543 are mutually compatible. Figure 6 Displays a 3D view of the spray module and its cap. (Example) Figure 3 and Figure 6As shown, the cover 543 has a water inlet and a liquid storage tank cover 543a, which covers the water inlet. When the liquid storage tank cover 543a is open, the cleaning liquid is poured into the liquid storage tank 542 through the water inlet. During normal operation of the window cleaning machine 500, the liquid storage tank cover 543a prevents the cleaning liquid from leaking out of the water inlet. This design, where the liquid tank is not located inside the housing 540 (i.e., not within the space defined by the housing 540 and the base 530), or where the liquid tank is not covered by the housing 540, allows the user to detect whether there is leakage in the liquid storage tank 542, thus preventing damage to electronic components. In one embodiment, the cover 543 is transparent or semi-transparent. In another embodiment, the cover 543 has a transparent or semi-transparent water level window to allow the user to observe the remaining water level in the liquid storage tank 542 and decide whether to add or stop injecting cleaning liquid. In one embodiment, the water level window is made of resin or glass.

[0098] like Figure 6 As shown, in one embodiment, the spraying module 550 includes at least two delivery pipes 551, at least two spraying units 552, and at least one connecting pipe 553. In one embodiment, the spraying unit 552 is fixed to the housing 540, and after the housing 540 and the base 530 are combined, the outlet of the spraying unit 552 is exposed on the bottom side of the base 530. In this embodiment, the spraying unit 552 is fixed to the housing 540 using fixing components such as screws. With the housing 540 and the base 530 combined, the spraying unit 552 is located on the base 530 and its outlet is exposed on the bottom side of the base 530 to spray cleaning fluid S1 onto the bottom side of the base 530. The delivery pipes 551 connect the liquid storage tank 542 of the housing 540 and the spraying unit 552 to transport the cleaning fluid from the liquid storage tank 542 to the spraying unit 552. The connecting pipe 553 connects to the internal spaces of the two spraying units 552 to balance the air pressure inside the spraying units 552. Please also refer to... Figure 4A and Figure 5 The storage tank 542, the delivery pipes 551, the spraying units 552, and the connecting pipe 553 form an interconnected space. Therefore, when the cleaning fluid enters the auxiliary liquid tank 621 of a spraying unit 552 from one delivery pipe 551, the gas in the pipeline can be discharged from the auxiliary liquid tank 621 of another spraying unit 552 and another delivery pipe 551 back to the storage tank 542. This reduces the possibility of cleaning fluid obstruction due to internal or external pressure in the pipeline. Figure 6As shown, the spray module 550, the liquid storage tank 542, the delivery pipes 551, and at least one of the connecting pipes 553 are all disposed on, connected to, or fixed to the housing 540 (or housing body 541). Therefore, when disassembling the housing 540, the water pipes do not need to be disassembled, and the water circuit can still be kept sealed, thus reducing the possibility of leakage. Preferably, the delivery pipes 551 and at least one of the connecting pipes 553 are not fixed to or connected to the base 530. Therefore, when it is necessary to disassemble the housing 540 of the window cleaning machine, it is not necessary to remove the liquid storage tank cover 543a first, further reducing the possibility of leakage.

[0099] In other embodiments, the spraying module 550 has multiple spraying units 552, which can be set at different suitable positions on the window cleaning machine 500 according to product requirements, so that cleaning liquid can be sprayed in multiple directions through multiple spraying units 552. For example Figure 5 As shown, the liquid storage tank 542 has at least two openings 545, and the delivery pipe 551 is fitted onto the openings 545. The water source for at least two spraying units 552 comes from the same liquid storage tank 542, so only one liquid tank is needed to supply water to multiple spraying units 552, which increases the convenience of water addition and also solves the problem of large space occupation of each liquid tank when using a multi-liquid tank supply.

[0100] Figure 7 This is a schematic diagram of a liquid-collecting unit according to an embodiment of the present invention. Figure 7 As shown, the spraying unit 552 also includes a liquid-collecting unit 608. The liquid-collecting unit 608 includes a vibrating plate 613 located at the liquid outlet 610, capable of atomizing liquid droplets. In this embodiment, the vibrating plates 613 of the liquid-collecting units 608 of the two spraying units 552 are respectively inclined towards the side closer to the first cleaning device 511 and the second cleaning device 512. The vibrating plate 613 can adjust the spraying state of the cleaning liquid. After passing through the vibrating plate 613, the cleaning liquid is pre-sprayed in a mist form onto the areas to be cleaned by the first cleaning device 511 and the second cleaning device 512, further enhancing the cleaning effect of the window cleaning machine. More specifically, the liquid-collecting unit 608 is used to push the cleaning liquid out of the auxiliary liquid tank 621 through the liquid outlet 610 for spraying. The liquid-collecting unit 608 includes a vibrating component that generates a pushing effect through its own vibration to spray the cleaning liquid out of the auxiliary liquid tank 621 through the liquid outlet 610. Figure 7As shown, the spraying unit 552 may include an ultrasonic vibration assembly comprising a substrate 612 and a vibrating plate 613 attached to the substrate 612. In one embodiment, the substrate 612 is made of stainless steel. The vibrating plate 613 is electrically connected to a power source (not shown) via a wire 618 and configured to convert electrical energy into mechanical energy. In one embodiment, the vibrating plate 613 is made of a piezoelectric material with a thickness between 0.05 and 0.2 cm. The vibrating plate 613 is annular, and the liquid outlet 610 penetrates the substrate 612 and is located within the area enclosed by the vibrating plate 613.

[0101] Figure 8 This is an exploded view of a spraying unit according to an embodiment of the present invention. Figure 8 As shown, the spraying unit 552 includes a secondary liquid tank 621, a liquid tank cover 622, a liquid collection unit 608, and a sealing assembly 623. The secondary liquid tank 621 is used to hold cleaning liquid and to spray the cleaning liquid onto the surface of the panel, working in conjunction with the cleaning cloth of the window cleaning machine 500 to perform the cleaning action. The water-holding space of the spraying unit 552 is formed by the secondary liquid tank 621, the sealing assembly 623, and the liquid tank cover 622. The sealing assembly 623 is used to maintain the watertightness between the secondary liquid tank 621 and the liquid tank cover 622. In one embodiment, the secondary liquid tank 621 and the liquid tank cover 622 are made of rigid plastic, while the sealing assembly 623 is made of an elastic material. In one embodiment, the sealing assembly 623 is made of silicone. The liquid-collecting unit 608 is located between the opening 622a of the liquid tank cover 622 and the opening 622b of the auxiliary liquid tank 621, and is fixed between the auxiliary liquid tank 621 and the liquid tank cover 622. Preferably, the spraying unit 552 also includes a waterproof member 624, which is located on one side of the auxiliary liquid tank 621 and includes a waterproof opening. The wire 618 of the liquid-collecting unit 608 passes through the waterproof opening and connects to the control system, and the substrate 612 and the vibrating plate 613 are located within the internal space of the spraying unit 552. The waterproof member 624 is made of an elastic material, such as silicone, and the wire 618 (e.g., Figure 7 As shown, even when the waterproof opening passes through the waterproof component 624, the waterproof opening can still remain watertight.

[0102] In one embodiment, the area of ​​one surface of the sealing assembly 623 is larger than the area of ​​one surface of the tank cover 622. In another embodiment, the length L of the sealing assembly 623 is greater than the length l of the tank cover 622. In yet another embodiment, the width W of the sealing assembly 623 may also be greater than the width w of the tank cover 622. According to this design, the tank cover 622 can abut against only a first portion of the first surface of the sealing assembly 623, exposing a second portion of the first surface of the sealing assembly 623. Figure 9 A cross-sectional view showing the spraying unit mounted on the base. (Example) Figure 9 As shown. When the spraying unit 552 is located or abuts against the base 530, the base 530 abuts against the second portion of the first surface of the sealing assembly 623. Furthermore, the auxiliary liquid tank 621 abuts against the second surface of the sealing assembly 623. The first portion of the sealing assembly 623 is abutted between the liquid tank cover 622 and the auxiliary liquid tank 621, thus preventing liquid leakage from the auxiliary liquid tank 621. The second portion of the sealing assembly 623 is abutted between the base 530 and the auxiliary liquid tank 621, thus preventing ambient liquid or liquid sprayed from the liquid collection unit 608 from entering the interior of the window cleaning machine 500 through the gap between the base 530 and the auxiliary liquid tank 621, and causing damage to the electronic components.

[0103] According to one embodiment of the present invention, the outer casing 540 includes a casing body 541, a liquid storage tank 542, and a cover 543. The liquid storage tank 542 is not located inside the outer casing 540 (i.e., not within the accommodating space defined by the outer casing 540 and the base 530), or the liquid storage tank 542 and the cover 543 are located outside the outer casing 540 to prevent liquid leakage and entry into the window cleaning machine 500. Preferably, the casing body 541 and the liquid storage tank 542 are integrally formed. In one embodiment, the spraying module 550 includes at least two delivery pipes 551, at least two spraying units 552, and at least one connecting pipe 553, constituting a multi-spraying unit 552 design, which can spray cleaning liquid in multiple directions to increase the cleaning effect. In one embodiment, the liquid storage tank 542, delivery pipes 551, spraying units 552, and connecting pipe 553 form an interconnected space, thus balancing the internal air pressure of the spraying unit 552 and avoiding the problem of cleaning liquid not being able to flow.

[0104] Figure 10A This is a perspective view of the rotation axis of the drive module according to an embodiment of the present invention. Figure 10B This is a perspective view of the rotating wheel of the drive module according to an embodiment of the present invention. Figure 11 This shows a bottom view of the rotation axis of the drive module according to an embodiment of the present invention. (See figure) Figure 4A , Figure 4B , Figure 10A , Figure 10B and Figure 11As shown, the drive module 590 includes at least one rotating shaft 592 and at least one rotating wheel 591. More specifically, the two rotating wheels 591 are respectively connected to the first cleaning device 110 and the second cleaning device 120. Preferably, the first cleaning device 110 and the second cleaning device 120 are hollow ring shapes and are connected to the outer peripheral surface of the rotating wheel 591. The rotating wheel 591 defines a fixing groove 593, and the shape of the rotating shaft 592 matches the shape of the fixing groove 593, with the rotating shaft 592 inserted into the fixing groove 593. The drive module 590 drives the rotating wheel 591 to rotate by rotating the rotating shaft 592. The rotating shaft 592 is a polygon with more than four sides, preferably a gear shape containing at least five teeth.

[0105] Figure 2 The existing rotating shaft 429 is a quadrilateral prism. When the rotating shaft 429 or the rotating wheel 411 is made of plastic, the rotating shaft 429 requires a large torque to drive the rotating wheel 411, making the fixing groove of the quadrilateral rotating wheel 411 prone to damage. This is because during rotation, force is applied only through two sides of the quadrilateral, easily causing cracks to form at the boundary of the fixing groove of the rotating wheel 411. To overcome this problem, an additional metal reinforcing ring is needed, placed inside the fixing groove of the rotating wheel 411 to prevent cracks from forming at the boundary of the fixing groove. However, by making the rotating shaft 592 a polygon with more than four sides, preferably a gear shape containing at least five teeth, the contact area between the rotating shaft 592 and the fixing groove 593 is increased, distributing the magnitude of the torque. In one embodiment, the contact area can preferably be increased by multiple teeth, allowing the multiple teeth to distribute the magnitude of the torque. This design reduces the risk of damage to the rotating shaft 592 and the fixing groove 593, even without a metal reinforcing ring between the rotating shaft 429 and the fixing groove 593 of the rotating wheel 411.

[0106] According to this embodiment, the shape of the rotating shaft 592 is a polygon with more than four sides, preferably a gear shape containing at least five teeth, and this shape matches the shape of the fixing groove 593 of the rotating wheel 591. Therefore, the multiple teeth can distribute the torque, and without the need for an additional metal reinforcing ring between the rotating shaft 429 and the fixing groove 593 of the rotating wheel 411, damage to the rotating shaft 592 and the fixing groove 593 can still be reduced, thereby improving the durability of the product. More specifically, the shape of the rotating shaft 592 increases the contact area with the fixing groove 593 through multiple teeth, thereby reducing damage to the rotating shaft 592 and the fixing groove 593.

[0107] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A window cleaning machine for removing particles from a panel, characterized in that, The window cleaning machine includes: One base; At least one cleaning device is provided on the bottom side of the base to define at least one space with the plate; A compressor module, connected to at least one of the spaces, is used to draw air from at least one of the spaces, creating a negative pressure in the at least one space, thereby causing the cleaning device to be adsorbed onto the plate; and A drive module includes at least one rotating shaft and at least one rotating wheel. The at least one rotating wheel is connected to at least one cleaning device and defines a fixing groove. The shape of the rotating shaft matches the shape of the fixing groove, and the rotating shaft is inserted into the fixing groove. The drive module drives the rotating wheel to rotate by rotating the rotating shaft. The rotating shaft and the fixed groove are both polygons with more than four sides.

2. The window cleaning machine as described in claim 1, characterized in that, The rotating shaft and the fixing groove are made of plastic.

3. The window cleaning machine as described in claim 2, characterized in that, No metal reinforcing ring is provided between the rotating shaft and the fixed groove.

4. The window cleaning machine as described in any one of claims 1 to 3, characterized in that, The rotating shaft is shaped like a gear with at least 5 teeth.

5. The window cleaning machine as described in any one of claims 1 to 3, characterized in that, The rotating shaft is shaped with multiple teeth and capable of distributing the magnitude of torque.

6. The window cleaning machine as described in claim 4, characterized in that, The rotating shaft is located on the drive module and is exposed on the bottom side of the base.

7. The window cleaning machine as described in claim 1, characterized in that, When the rotating shaft is inserted into the fixed groove, the contact area between the rotating shaft and the fixed groove is greater than the contact area between the quadrilateral rotating shaft and its corresponding fixed groove.

8. The window cleaning machine as described in claim 1, characterized in that, At least one of the cleaning devices includes a first cleaning device and a second cleaning device, and the two rotating shafts included in the drive module are respectively connected to the first cleaning device and the second cleaning device.

9. The window cleaning machine as described in claim 1, characterized in that, The window cleaning machine also includes a housing that covers the base to form a receiving space, in which the drive module is located.

Images