Suction nozzle for hard surface cleaning device and hard surface cleaning device

Abstract

The application discloses a suction nozzle for hard surface cleaning equipment, which comprises a hard air duct plate (100) and a flexible scraping strip (200), the scraping strip is connected with the air duct plate, the air duct plate is provided with a suction port (101), the scraping strip is provided with a cleaning surface (201) facing the hard surface to be cleaned, a plurality of convex parts (202) are formed on the cleaning surface, the upper surface (2021) of the convex part is used for abutting against the hard surface to be cleaned, and gaps (203) are formed between the adjacent convex parts, a plurality of flow guide grooves (204) are further formed on the cleaning surface and are concave relative to the upper surface of the convex part, the flow guide grooves are communicated with each other, and at least two flow guide grooves are connected with each gap.

Description

Technical Field

[0001] This application relates to a suction nozzle for a suction device, and more particularly to a suction nozzle for a suction device used for cleaning hard surfaces. Background Technology

[0002] With the increasing popularity of smart homes and cleaning equipment, various hard surface cleaning devices have become indispensable tools in modern home and commercial cleaning. These devices typically utilize the principle of negative pressure, using a suction nozzle to suck up and collect stains from hard surfaces for efficient cleaning.

[0003] In these devices, the suction nozzle, as a key component that comes into direct contact with the surface being cleaned, directly affects the cleaning effect through its structural design. Common suction nozzles typically consist of a flexible scraper and a matching air duct plate. The scraper is used to remove liquids from hard surfaces, while the channel formed between the air duct plate and the scraper serves as an inlet for airflow and liquid. Under the negative pressure generated by the fan inside the device, the scraped-off dirt is sucked into a dust or water collection device.

[0004] However, in practical applications, especially when applying high pressure to clean, the existing nozzle structure causes the scraper to adhere tightly to the cleaning surface due to pressure. This can easily lead to complete or partial blockage of the air inlet at the bottom of the nozzle. Once the air inlet is blocked, the negative pressure generated inside the device cannot effectively act on the area to be cleaned, causing the airflow to be interrupted or weakened. Consequently, the scraped-off wastewater or dirt cannot be smoothly sucked in, resulting in reduced cleaning effectiveness and even leaving obvious watermarks or stains on the cleaning surface. Summary of the Invention

[0005] One of the purposes of this application is to provide a suction nozzle for a hard surface cleaning device, which increases the airflow channel by designing the scraper, effectively avoiding channel blockage and thus ensuring cleaning effect.

[0006] To achieve the above objectives, this application provides a suction nozzle for a hard surface cleaning device, comprising an air duct plate and a flexible scraper, wherein the scraper is connected to the air duct plate, and a suction port is formed on the air duct plate; wherein: The scraper has a cleaning surface facing the hard surface to be cleaned. A plurality of protrusions are formed on the cleaning surface. The upper surface of the protrusions is used to fit against the hard surface to be cleaned. A notch is formed between adjacent protrusions. A plurality of guide grooves are also formed on the cleaning surface, which are concave relative to the upper surface of the protrusions. The guide grooves are interconnected. Each notch is connected to at least two guide grooves.

[0007] Furthermore, in the nozzle described in this application, the flow channel includes a first flow channel, which is arc-shaped in its extending direction and is arranged circumferentially beside the protrusion.

[0008] Furthermore, in the nozzle described in this application, the flow channel includes a second flow channel, which is linear in its extending direction.

[0009] Furthermore, in the nozzle described in this application, the bottom of the guide groove has an arc-shaped chamfer between it and the sidewall.

[0010] Furthermore, in the nozzle described in this application, the notch has a bottom end connected to the flow guide groove and a top end opposite to the bottom end, the width of the bottom end being smaller than the width of the top end.

[0011] Furthermore, in the suction nozzle described in this application, the upper surface of the protrusion protrudes beyond the surface of the cleaning surface of the scraper.

[0012] Furthermore, in the suction nozzle described in this application, the scraper includes at least a first scraper and a second scraper, the protrusion and the guide groove are formed on the cleaning surface of the second scraper; the first scraper is disposed on the opposite side from the cleaning surface of the second scraper.

[0013] Furthermore, in the suction nozzle described in this application, the first scraper protrudes beyond the second scraper along the length of the air duct plate.

[0014] Another objective of this application is to provide a hard surface cleaning device that is easy to use and provides better cleaning results.

[0015] For the purposes described above, this application also provides a hard surface cleaning device, which includes the nozzle as described above.

[0016] Furthermore, the hard surface cleaning equipment described in this application includes a handheld window cleaner.

[0017] The suction nozzle for hard surface cleaning equipment described in this application increases the airflow channel through the arrangement of multiple interconnected guide channels, thereby greatly reducing the risk of channel blockage.

[0018] Furthermore, because this application employs a multi-channel arrangement with multiple guide channels, the depth of the guide channels can be reduced, thereby improving the retention of dirt within the guide channels. Additionally, since the depth of the guide channels does not need to be excessive, the strength of the scraper can be guaranteed.

[0019] In addition, the interconnected design of the guide channels makes the suction effect of each guide channel more uniform, thereby improving the cleaning effect. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of the suction nozzle described in this application in one embodiment is shown from one perspective.

[0021] Figure 2 Showing Figure 1 A magnified view of a portion of point A in the middle.

[0022] Figure 3 The illustration shows the flow channel of the suction nozzle described in this application in another embodiment.

[0023] Figure 4 The diagram schematically shows the flow channel of the suction nozzle described in this application in another embodiment.

[0024] Figure 5 The illustration schematically shows the flow channel of the suction nozzle described in this application in another embodiment.

[0025] Figure 6 This paper schematically illustrates the structure of the suction nozzle described in this application in one embodiment from another perspective.

[0026] Figure 7 A schematic diagram of the hard surface cleaning device described in this application is shown in one embodiment. Detailed Implementation

[0027] The following description, in conjunction with the accompanying drawings and specific embodiments, will further explain and illustrate the suction nozzle for hard surface cleaning equipment and the hard surface cleaning equipment described in this application. However, such explanation and illustration do not constitute an undue limitation on the technical solution of this application.

[0028] With the increasing popularity of smart homes and cleaning equipment, various hard surface cleaning devices, such as window cleaners, floor scrubbers, and robotic vacuum cleaners, have become indispensable tools in modern home and commercial cleaning. These devices typically utilize the principle of negative pressure, using a suction nozzle to draw in and collect liquid or solid stains from hard surfaces such as glass, tiles, and wooden floors, achieving efficient cleaning.

[0029] In these devices, the suction nozzle, as a key component that comes into direct contact with the surface being cleaned, directly affects the cleaning effect through its structural design. Common suction nozzles typically consist of a flexible scraper and a matching air duct plate. The scraper is used to remove liquids from hard surfaces, while the channel formed between the air duct plate and the scraper serves as an inlet for airflow and liquid. Under the negative pressure generated by the fan inside the device, the scraped-off dirt is sucked into a dust or water collection device.

[0030] However, in practical applications, especially when applying high pressure to clean, the existing nozzle structure causes the scraper to adhere tightly to the cleaning surface due to pressure. This can easily lead to complete or partial blockage of the air inlet at the bottom of the nozzle. Once the air inlet is blocked, the negative pressure generated inside the device cannot effectively act on the area to be cleaned, causing the airflow to be interrupted or weakened. Consequently, the scraped-off wastewater or dirt cannot be smoothly sucked in, resulting in reduced cleaning effectiveness and even leaving obvious watermarks or stains on the cleaning surface.

[0031] To address the issue of easily clogged air inlets, some improvements have been made by creating grooves on the back of the wiper blade to form additional air intake channels. However, these solutions still have several shortcomings: for example, if the grooves are too deep, they weaken the structural strength of the wiper blade, making it prone to deformation or breakage, and may also lead to dirt residue; if the grooves are too shallow, they cannot effectively improve air intake, and the suction effect remains poor.

[0032] To address the aforementioned issues, this application provides a suction nozzle for a hard surface cleaning device in some embodiments, which can ensure effective air intake under high pressure while also taking into account structural strength and cleaning uniformity.

[0033] Figure 1 The diagram schematically illustrates the structure of the suction nozzle described in this application in one embodiment.

[0034] Figure 2 Showing Figure 1 A magnified view of a portion of point A in the middle.

[0035] like Figure 1 As shown, in some embodiments, the suction nozzle for a hard surface cleaning device includes a rigid air duct plate 100 and a flexible scraper 200 connected to the air duct plate. In some specific embodiments, the scraper 200 can be connected to the air duct plate 100 by screws or rivets.

[0036] like Figure 1 As shown, a suction port 101 is formed on the air duct plate. When it is necessary to clean hard surfaces, such as glass, when the centrifugal fan of the hard surface cleaning equipment rotates to create negative pressure, the dirty water on the hard surface can enter the suction port of the nozzle through the suction channel formed on the scraper and connected to the suction port through the airflow, and finally be sucked into the water collection tank of the hard surface cleaning equipment. The air is then discharged to the outside of the main unit of the hard surface cleaning equipment through the fan.

[0037] like Figure 1 and Figure 2As shown, the scraper 200 has a cleaning surface 201 facing the hard surface to be cleaned, and a plurality of protrusions 202 are formed on the cleaning surface. The upper surface 2021 of the protrusions 202 is in contact with the hard surface to be cleaned during cleaning. A notch 203 is formed between adjacent protrusions 202.

[0038] In addition, such as Figure 1 and Figure 2 As shown, the cleaning surface 201 also has a plurality of guide grooves 204 recessed relative to the upper surface 2021 of the protrusion 202. These guide grooves are interconnected, and each notch is connected to at least two guide grooves. These guide grooves and notches are all connected to the suction port as part of the suction channel. It can be seen that each notch 203 of the scraper in this embodiment is connected to multiple guide grooves 204. Since the notch 203 forms an inlet for dirt on the hard surface to enter the suction nozzle, the structure of multiple guide grooves greatly increases the airflow area. This can effectively increase the air volume during suction compared to the setting of a single guide groove, thereby effectively improving the air intake and enhancing the suction effect. In addition, this structure in which each notch is connected to multiple guide grooves also avoids the easy clogging that may occur with a single guide groove. Furthermore, compared to the uneven suction between channels that may be caused by using multiple independent guide grooves, the embodiment of this application, by setting interconnected guide grooves, can make the suction distribution between each guide groove uniform, thereby improving the cleaning effect. Furthermore, since this application has multiple guide channels, the depth of the guide channels can be increased without increasing the air intake volume, thereby not weakening the overall structural strength of the scraper and preventing it from deforming or breaking under high pressure or long-term service.

[0039] In some specific implementation methods, such as Figure 2 As shown, the guide channel 204 includes an arc-shaped first guide channel 205, which is arc-shaped in its extending direction and is arranged around the side of the protrusion 202. With this arrangement, liquid on the hard surface, such as sewage, is drawn into the first guide channel in the direction indicated by arrow W in the figure. Compared to a single straight groove, the path for liquid to flow into the multi-channel arc-shaped guide channel is shorter, thus facilitating the removal of liquid from the hard surface.

[0040] like Figure 3 As shown, in some other specific embodiments, the flow channel may include a straight second flow channel 206, which is straight in its extension direction.

[0041] In some different specific implementations, such as Figure 4 As shown, the flow channel may include both an arc-shaped first flow channel 205 and a straight second flow channel 206.

[0042] It should also be noted that this application aims to illustrate that multiple guide channels are provided connected to each notch, and these multiple guide channels are interconnected. Regardless of the specific shape of the guide channel, such as whether it is arc-shaped or straight, and regardless of the specific number of arc-shaped and straight guide channels, they are all within the protection scope of this application. For example, Figure 5 This shows another specific implementation method that is different from the one described above, in which each notch is connected to four arc-shaped guide grooves.

[0043] In other feasible implementations, the guide channel can also be of the zigzag shape.

[0044] In some specific implementation methods, such as Figure 2 As shown, the bottom of the flow channel 204 has an arc-shaped chamfer 2041 between it and the side wall. In this embodiment, the arc-shaped chamfer further prevents dirt from accumulating in the flow channel, thereby further improving the anti-clogging effect of the suction nozzle.

[0045] In some specific implementation methods, such as Figure 2 As shown, the notch 203 has a bottom end connected to the guide channel and a top end opposite to the bottom end, wherein the width d1 of the bottom end is smaller than the width d2 of the top end. With this configuration, the notch gradually narrows along the path of the airflow being drawn in, which can further improve the suction effect.

[0046] In some specific implementation methods, such as Figure 2 As shown, the upper surface 2021 of the protrusion 202 protrudes from the surface of the cleaning surface 201 of the scraper. This arrangement is equivalent to further increasing the depth of the guide channel, thereby further increasing the cross-sectional area of ​​the guide channel air duct to further improve the air intake effect.

[0047] In some specific implementation methods, such as Figure 1 , Figure 2 and Figure 6 As shown, the scraper may include at least a first scraper 210 and a second scraper 220, with a suction channel formed between the first scraper 210 and the second scraper 220. The protrusion 202 and the guide groove 204 are both formed on the cleaning surface 201 of the second scraper 220. The first scraper 210 is located on the side opposite to the cleaning surface of the second scraper 220. That is, in Figure 6In the view shown, the first scraper 210 is positioned closer to the viewer, while the second scraper is positioned below it and thus obscured. When cleaning of the hard surface is required, the centrifugal fan of the hard surface cleaning device rotates to create negative pressure. Dirty water on the hard surface enters the suction port of the nozzle through the suction channel between the first scraper 210 and the second scraper 220, which is connected to the suction port, and is finally sucked into the water collection tank or dust collection tank of the hard surface cleaning device.

[0048] In other feasible embodiments, the guide groove may also be provided on the first scraper.

[0049] In some more specific implementations, such as Figure 2 As shown, along the length L of the air duct plate, the first scraper 210 protrudes beyond the second scraper 220, meaning the outer edge of the first scraper protrudes beyond the outer edge of the second scraper. With this arrangement, when cleaning hard surfaces, the free end of the first scraper can scrape the surface, and in conjunction with the suction channel, it can suck up dirt, thereby further improving the cleaning effect.

[0050] This application also provides a hard surface cleaning device in some embodiments.

[0051] Figure 7 A schematic diagram of the hard surface cleaning device described in this application is shown in one embodiment.

[0052] like Figure 7 As shown, in some embodiments, the hard surface cleaning device includes a suction nozzle 1 as described above. Furthermore, similar to other common hard surface cleaning devices, it also includes a centrifugal fan and a waste tank housed within the main body. When cleaning a hard surface, the suction nozzle is placed against the hard surface, the scraper contacts and scrapes the hard surface, and simultaneously the centrifugal fan rotates to create negative pressure, drawing dirt, such as dirty water, from the hard surface into the waste tank through the airflow via a guide channel and suction port. Simultaneously, the drawn-in air is exhausted to the outside of the main body by the fan.

[0053] Since this application does not involve improvements to other components of the hard surface cleaning equipment, the structure and working process of other components of the hard surface cleaning equipment will not be described in detail here.

[0054] This hard surface cleaning device has better cleaning effect and is easy to use because it uses the above-mentioned nozzle.

[0055] In some specific embodiments, the hard surface cleaning device described in this application may include, for example: Figure 7 The handheld window cleaner shown.

[0056] It should be noted that the hard surface cleaning equipment described in this application is not limited to handheld devices or glass cleaning devices. In some other specific embodiments, it can also be a robotic vacuum cleaner with a negative pressure nozzle, a washer-mop combo, or similar equipment.

[0057] It should be noted that the prior art portion of the protection scope of this application is not limited to the embodiments given in this application. All prior art that does not contradict the solution of this application, including but not limited to prior patent documents, prior publications, prior public uses, etc., can be included in the protection scope of this application.

[0058] Furthermore, the combination of the technical features in this case is not limited to the combination methods described in the claims of this case or the combination methods described in the specific embodiments. All technical features described in this case can be freely combined or combined in any way, unless they contradict each other.

[0059] It should also be noted that the embodiments listed above are merely specific embodiments of this application. Obviously, this application is not limited to the above embodiments, and similar changes or modifications made thereto are those that can be directly derived or easily conceived by those skilled in the art from the content disclosed in this application, and should all fall within the protection scope of this application.

Claims

1. A suction nozzle for a hard surface cleaning device, comprising an air duct plate (100) and a flexible scraper (200), the scraper being connected to the air duct plate, the air duct plate having a suction port (101); characterized in that: The scraper has a cleaning surface (201) facing the hard surface to be cleaned. A plurality of protrusions (202) are formed on the cleaning surface. The upper surface (2021) of the protrusions is used to fit against the hard surface to be cleaned. A notch (203) is formed between adjacent protrusions. A plurality of guide grooves (204) are also formed on the cleaning surface that are concave relative to the upper surface of the protrusions. The plurality of guide grooves are interconnected with each other. Each notch is connected to at least two guide grooves.

2. The suction nozzle as described in claim 1, characterized in that, The guide channel includes a first guide channel (205), which is arc-shaped in its extending direction and is arranged around the side of the protrusion.

3. The suction nozzle as described in claim 1 or 2, characterized in that, The guide channel includes a second guide channel (206), which is linear in its extension direction.

4. The suction nozzle as described in claim 1, characterized in that, The bottom of the guide channel has an arc-shaped chamfer (2041) between it and the side wall.

5. The suction nozzle as described in claim 1, characterized in that, The notch has a bottom end connected to the guide channel and a top end opposite to the bottom end, the width (d1) of the bottom end being smaller than the width (d2) of the top end.

6. The suction nozzle as described in claim 1, characterized in that, The upper surface (2021) of the protrusion protrudes from the surface of the cleaning surface (201) of the scraper.

7. The suction nozzle as described in claim 1, characterized in that, The scraper includes at least a first scraper (210) and a second scraper (220), with the protrusion and guide groove formed on the cleaning surface of the second scraper; the first scraper is disposed on the opposite side from the cleaning surface of the second scraper.

8. The suction nozzle as described in claim 7, characterized in that, Along the length (L) of the air duct plate, the first scraper bar protrudes from the second scraper bar.

9. A hard surface cleaning device, characterized in that, It includes the suction nozzle (1) as described in any one of claims 1-8.

10. The hard surface cleaning device as described in claim 9, characterized in that, This includes handheld window cleaners.

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