Nozzle assembly and surface cleaning device

Abstract

The utility model relates to the technical field of cleaning, and discloses a nozzle assembly and a surface cleaning device. According to the nozzle assembly, a nozzle body is provided with a water inlet part and a water outlet part which communicate with each other; the nozzle is arranged on the water outlet part and is used for spraying out the medium in the nozzle main body; and the cover plate is connected with the water outlet part and is provided with an opening for avoiding ejection of the medium. According to the surface cleaning device, a shell is arranged outside a surface cleaning device body, and a water outlet channel is formed in the shell; the nozzle assembly is detachably connected with the surface cleaning device body. The water inlet part of the nozzle assembly is connected with the water outlet channel; wherein the shell is provided with a mounting hole, and a step is formed in the mounting hole; and the cover plate is clamped with the step through the buckle and is matched with the surface of the shell. According to the technical scheme, the nozzle assembly is reasonable in structural design; the nozzle assembly is detachably connected, dismounting and mounting are convenient and fast, and generally, the structure of the nozzle assembly cannot be damaged or destroyed; and the nozzle assembly is convenient to maintain, easy to operate by a user and good in use experience.

Description

Technical Field

[0001] This utility model relates to the field of cleaning technology, specifically to a nozzle assembly and a surface cleaning device. Background Technology

[0002] Window cleaning robots, also known as glass cleaning robots, automatic window cleaning machines, intelligent window cleaners, and smart window cleaners, are a type of surface cleaning device and belong to the category of smart home appliances. Window cleaning robots work by adhering to the glass using an adhesive unit. Specifically, the robot uses a vacuum pump or fan at its base to firmly adhere to the glass, and then, with the help of artificial intelligence, automatically detects the corners and edges of the window, plans a cleaning path, and cleans the window. This solves the problems of dangerous high-altitude operations and the difficulty and danger of outdoor window cleaning.

[0003] When a window cleaning robot is working, it needs to spray an even mist of water onto the surface to wet both the surface and the cleaning cloth to achieve a good cleaning effect. Users typically add tap water to the machine. However, since the machine's water tank and water circuit lack a filter, the nozzles are easily clogged by impurities. Furthermore, the machine is generally used intermittently; after prolonged periods of inactivity, residual water on the nozzles dries and forms limescale, which also leads to nozzle clogging. Clogged nozzles reduce the machine's cleaning effectiveness.

[0004] Currently, there are two main nozzle solutions on the market:

[0005] (1) One type is a non-removable nozzle that is fixed inside the machine. When the nozzle becomes clogged, the machine needs to be disassembled to replace the nozzle; this results in high maintenance costs and low efficiency.

[0006] (2) Another type is the detachable nozzle, where the nozzle and nozzle seat are generally fitted with an interference fit to ensure a good seal and withstand water pressure. When replacing this type of nozzle, pliers are needed to hold the nozzle and a considerable amount of force is required to pull it out; the nozzle may be damaged during disassembly, which may cause leakage at the nozzle seat connection after replacement. In addition, this solution requires leaving space on the machine for tool operation, which will also affect the appearance of the machine.

[0007] It is evident that the design of the nozzle in the existing technology is not reasonable enough, which causes inconvenience to later maintenance and repair, and may even lead to other malfunctions during later maintenance. Utility Model Content

[0008] This invention provides a nozzle assembly and a surface cleaning device to solve the aforementioned technical problems caused by unreasonable nozzle design in the prior art.

[0009] According to a first aspect of the present invention, a nozzle assembly is provided, comprising:

[0010] The nozzle body has an inlet section and an outlet section that are connected to each other;

[0011] A nozzle, located at the water outlet section, is used to spray the medium within the nozzle body; and

[0012] A cover plate is connected to the water outlet section, and the cover plate is provided with an opening to prevent the medium from being sprayed out;

[0013] The cover plate is used to secure the nozzle assembly by means of a snap-fit ​​connection.

[0014] Preferably, the water inlet portion is configured as a water inlet pipe; the water inlet pipe is used to connect to the water outlet channel to introduce the medium into the nozzle body, and the water inlet pipe and the water outlet channel are sealed by a sealing ring.

[0015] Preferably, the water outlet portion located outside the nozzle extends towards the cover plate to form a flow-expanding structure, the flow-expanding structure corresponding to the opening; the medium ejected from the nozzle passes through the flow-expanding structure and is ejected outward from the opening; and / or

[0016] The spray direction of the nozzle intersects with the length direction of the water inlet section.

[0017] Preferably, the water outlet section is provided with a guide column, and the first end of the nozzle is provided with a mounting hole. The nozzle is sleeved on the first end of the guide column through the mounting hole. The outer periphery of the nozzle is sealed to the inner wall of the water outlet section. A water outlet channel is provided between the nozzle and the guide column, and the water outlet channel is connected to the spray hole at the second end of the nozzle.

[0018] Preferably, a mixing chamber is provided at the bottom of the mounting hole of the nozzle, the mixing chamber is connected to the spray hole, and the mixing chamber is connected to the water outlet channel.

[0019] Preferably, the cover plate is provided with a snap-fit ​​for engaging; or

[0020] The cover plate is provided with snap fasteners for locking; the snap fasteners are provided in pairs and are located on the edges of two opposite sides of the cover plate.

[0021] Preferably, a disassembly groove is provided on the cover plate at the corresponding snap-fit ​​location, and the disassembly groove is used to insert a tool to pry the cover plate.

[0022] According to a second aspect of the present invention, a surface cleaning device is provided, comprising:

[0023] The surface cleaning device has a main body, an outer casing, and an internal water outlet channel; and

[0024] The nozzle assembly as described in any of the above is detachably connected to the main body of the surface cleaning device; the water inlet portion of the nozzle assembly is connected to the water outlet channel;

[0025] The outer casing has mounting holes with steps; the cover plate engages with the steps via snap-fit, and the cover plate mates with the surface of the outer casing.

[0026] Preferably, the nozzle assembly is connected to the water outlet channel via a nozzle mounting seat; the shape of the nozzle mounting seat matches the nozzle assembly, the insertion port of the nozzle mounting seat corresponds to the mounting hole, the nozzle assembly is inserted into the nozzle mounting seat, and the water inlet portion is sealed to the nozzle mounting seat by a sealing ring.

[0027] Preferably, the mounting hole has a groove, and the edge of the cover plate of the nozzle assembly has a flange that covers the buckle. The flange matches the shape of the groove and is designed to snap into place. The flange matches the surface of the outer shell.

[0028] The technical solution of this utility model features a reasonably designed nozzle assembly. Its cover plate is fixed using a snap-fit ​​method, thus enabling the nozzle assembly to be detachably connected. The nozzle assembly is easy and quick to assemble and disassemble, generally without causing damage or destruction to its structure. Once reassembled, the nozzle assembly can be put back into normal use. This structural design makes maintenance and upkeep convenient, easy for users to operate, and provides a superior user experience.

[0029] In the surface cleaning device, the cover fits snugly with the outer casing; removing or installing the cover does not affect the appearance of the outer casing, nor does it affect the connection and sealing of the nozzle assembly. Similarly, the surface cleaning device is easy and simple to maintain, providing a superior user experience. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the planar structure of the nozzle assembly in one embodiment;

[0031] Figure 2 yes Figure 1 A schematic diagram of the structure of section AA;

[0032] Figure 3 yes Figure 1 A structural schematic diagram of section AB (view rotated);

[0033] Figure 4 yes Figure 1 A schematic diagram of the three-dimensional structure;

[0034] Figure 5 This is a front view schematic diagram of the nozzle in one embodiment;

[0035] Figure 6 This is a side view of the nozzle in one embodiment;

[0036] Figure 7This is a schematic diagram of a surface cleaning device with a nozzle assembly installed in one embodiment.

[0037] Figure 8 yes Figure 7 Cross-sectional view of the nozzle assembly mounting location;

[0038] Figure 9 This is a schematic diagram of a surface cleaning device for removing a nozzle assembly in one embodiment.

[0039] Figure 10 yes Figure 9 Cross-sectional view of the nozzle assembly mounting location;

[0040] Figure label:

[0041] 1- Nozzle assembly; 2- Main body of surface cleaning device;

[0042] 11- Nozzle body; 12- Snap-on; 13- Nozzle head; 14- Step; 15- Cover plate; 16- Disassembly groove; 17- Flanged edge; 18- Spray hole; 19- Water outlet channel; 110- Flow expansion structure; 111- Flow guide column; 112- Annular groove; 113- Annular protrusion; 114- Mixing chamber; 115- Flow guide groove;

[0043] 21-Outer casing; 22-Nozzle mounting base; 23-Water outlet channel;

[0044] 1101 - Inlet pipe; 1102 - Outlet pipe. Detailed Implementation

[0045] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the scope of protection of the present invention.

[0047] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Moreover, in this invention, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element via a third element.

[0049] Example 1

[0050] Please refer to Figures 1-6 This embodiment provides a nozzle assembly, including: a nozzle body 11, a nozzle head 13 connected to the nozzle body 11, and a cover plate 15 connected to the nozzle body 11; the nozzle body 11 has an inlet portion and an outlet portion that are interconnected; the inlet portion is used to introduce a medium into the interior of the nozzle body 11, and the medium flows into the outlet portion and can be sprayed out from the nozzle head 13; the nozzle head 13 is located in the outlet portion and is used to spray out the medium inside the nozzle body 11; the cover plate 15 is connected to the outlet portion and has an opening to prevent the medium from being sprayed out; wherein, the cover plate 15 is used to fix the nozzle assembly 1 by means of a snap-fit ​​12, for example, to a surface cleaning device or a component of the surface cleaning device (such as the housing 21). The nozzle assembly 1 of this utility model has its cover plate 15 fixed by means of a snap-fit ​​12, which is a detachable connection; disassembly and assembly are convenient and quick, and generally will not cause damage or destruction to the structure of the nozzle assembly 1; the nozzle assembly 1 can be reinstalled after subsequent maintenance and can continue to be used normally.

[0051] Please refer to Figure 2-4In one embodiment, the water inlet portion is configured as a water inlet pipe 1101; the water inlet pipe 1101 is used to connect to the water outlet channel 23 to introduce a medium (such as water or cleaning fluid) into the nozzle body 11, and the water inlet pipe 1101 and the water outlet channel 23 are sealed by a sealing ring. As an example, the water outlet channel 23 can be a flexible rubber tube that connects to a water source to supply water externally, and the water inlet pipe 1101 can be inserted into the water outlet channel 23, with a sealing ring provided between the water inlet pipe 1101 and the water outlet channel 23. Specifically, the water inlet pipe 1101 has a sealing ring groove on its exterior, and the sealing ring is fitted into the sealing ring groove; wherein, the sealing ring is preferably configured as an O-ring or other type of sealing ring.

[0052] Please refer to Figure 2 , 3 In one embodiment, the water outlet portion located outside the nozzle 13 extends towards the cover plate 15 to form a flow-expanding structure 110, which corresponds to the opening. The medium sprayed from the nozzle 13 passes through the flow-expanding structure 110 and is sprayed outward from the opening. The flow-expanding structure 110 is similar to a trumpet shape, preventing the water mist sprayed from the nozzle 13 from sticking to the nozzle body 11, causing contamination or affecting the normal operation of other components or equipment. At the same time, the flow-expanding structure 110 can also ensure that the sprayed water mist can cover a sufficient cleaning area.

[0053] Please refer to Figure 1 , 2 In one embodiment, the water outlet is preferably configured as a water outlet pipe 1102. The spray direction of the nozzle 13 intersects with the length direction of the water inlet, that is, the water inlet pipe 1101 and the water outlet pipe 1102 form a spatial angle. Figure 2 The included angle in the attached diagram is A. Figure 1 The included angle in the attached diagram is B; this allows the nozzle 13 to spray water mist outward at an angle, ensuring that the sprayed water mist can cover a sufficient cleaning area.

[0054] Please refer to Figure 2 , 35, 6, In one embodiment, a guide column 111 is provided in the water outlet section, a mounting hole is provided at the first end of the nozzle 13, and the second end of the nozzle 13 is connected to the water outlet pipe 1102; the guide column 111 is preferably integrally formed with the nozzle body 11. The nozzle 13 is sleeved on the first end of the guide column 111 through the mounting hole, preferably with an interference fit to achieve fixation and sealing of the nozzle 13; the outer periphery of the nozzle 13 is sealed to the inner wall of the water outlet section; a water outlet channel 19 is provided between the nozzle 13 and the guide column 111, and the water outlet channel 19 communicates with the spray hole 18 at the second end of the nozzle 13. The water outlet channel 19 is preferably provided as three channels, which can be evenly spaced (i.e., uniformly distributed) to draw out the medium in the nozzle body 11 to enter the nozzle 13. Furthermore, in one embodiment, in the sealed connection between the nozzle 13 and the water outlet, an annular groove 112 is provided in the nozzle body 11, and an annular protrusion 113 is provided on the nozzle 13. The annular protrusion 113 of the nozzle 13 is located further outward than the annular groove 112 of the nozzle body 11. After the nozzle 13 is installed in place, it forms an effective sealed connection structure with the nozzle body 11.

[0055] Please refer to Figure 2 , 3 5. In one embodiment, a mixing chamber 114 is provided at the bottom of the mounting hole of the nozzle 13. The mixing chamber 114 is connected to the spray hole 18 and the outlet channel 19. The nozzle 13 is provided with a guide groove 115, which is preferably three evenly distributed grooves. The guide groove 115 is used for guiding the medium and uniformly distributing the medium out of the spray. The water medium enters the mixing chamber 114 through the space between the nozzle 13 and the nozzle body 11, and is finally sprayed out from the spray hole 18 of the nozzle 13 to form a fine water mist. The cooperation between the outlet channel 19 and the guide groove 115 ensures that the water mist from the spray hole 18 can be evenly dispersed, and also ensures that the sprayed water mist can cover a sufficient cleaning area.

[0056] Please refer to Figure 1-4 In one embodiment, the cover plate 15 is provided with snap fasteners 12 for locking; the cover plate 15 can achieve locking by the deformation of the snap fasteners 12. Preferably, the snap fasteners 12 are arranged in pairs, and the snap fasteners 12 are located on the edges of two opposite sides of the cover plate 15. After the nozzle assembly is installed, the snap fasteners 12 at both ends of the cover plate 15 simultaneously form a locking connection, resulting in a better fixing effect of the nozzle assembly.

[0057] Please refer to Figure 1-4 In one embodiment, a disassembly groove 16 is provided on the cover plate 15 corresponding to the snap-fit ​​point. The disassembly groove 16 is used to insert a tool to pry the cover plate 15 and disengage the snap-fit ​​point. Specifically, the user can use a tool such as a flathead screwdriver to insert into the disassembly groove 16 and pry the nozzle assembly 1 off the device (such as a surface cleaning device). For easy disassembly, in one example, two disassembly grooves 16 are provided, corresponding one-to-one with the snaps 12 at both ends of the cover plate 15.

[0058] Example 2

[0059] Please refer to Figure 1-10 This embodiment provides a surface cleaning device, specifically a device for cleaning smooth surfaces, and more specifically a window cleaning robot or a glass cleaning robot.

[0060] The surface cleaning device includes: a surface cleaning device body 1 and a nozzle assembly 1 as described in Embodiment 1; the surface cleaning device body 1 is provided with an outer shell 21 and has a water outlet channel 23 inside; the nozzle assembly 1 is detachably connected to the surface cleaning device body 1; the water inlet portion of the nozzle assembly 1 is connected to the water outlet channel 23. The outer shell 21 has a mounting hole, and the mounting hole forms a step 14; the cover plate 15 is engaged with the step 14 by a snap fastener 12, the snap fastener 12 being an interference fit, and the cover plate 15 and the outer shell 21 having surface contact. Preferably, the snap fastener 12 is provided on the cover plate 15, and after the nozzle assembly 1 is connected to the water outlet channel 23, the snap fastener 12 of the cover plate 15 engages with the step 14 to fix the cover plate 15; the snap fastener 12 design is reversed. This ensures that the nozzle assembly 1 will not fall off the outer shell 21 after being installed on the surface cleaning device body 1. The water inlet portion can be inserted into the water outlet channel 23, and a sealing ring is provided between the water inlet portion and the water outlet channel 23, preferably an O-ring.

[0061] Please refer to Figure 8-10 In one embodiment, the nozzle assembly 1 is connected to the water outlet channel 23 via a nozzle mounting base 22. The nozzle mounting base 22 is shaped to fit the nozzle assembly 1, and the insertion port of the nozzle mounting base 22 corresponds to the mounting hole. The nozzle assembly 1 is inserted into the nozzle mounting base 22 and fixed in place, making the nozzle assembly 1 more stable. The water inlet portion is sealed to the nozzle mounting base 22 by a sealing ring, preferably an O-ring or other type of sealing ring. The water inlet end of the nozzle mounting base 22 is connected to the water outlet channel 23 (such as a flexible hose), preferably with the water inlet end inserted into the water outlet channel 23 to form a seal.

[0062] Please refer to Figure 8-10 In one embodiment, the mounting hole has a groove, and the edge of the cover plate 15 of the nozzle assembly 1 has a flange 17 at the blocking buckle 12. In this case, the flange 17 is larger than the step 14 on the mounting hole; the flange 17 matches the shape of the groove and is designed to snap together with an interference fit; the flange 17 matches the surface of the housing 21. The design of the flange 17 ensures that the nozzle assembly 1 will not sink into the interior of the housing 21 during installation, controls the fit between the flange 17 and the housing 21, resulting in a good appearance and avoiding mismatch in appearance between the housing 21 and the nozzle assembly 1.

[0063] The surface cleaning device of this utility model adopts the nozzle assembly 1 in Embodiment 1, which facilitates the easy removal and reinstallation of the nozzle assembly 1 from the equipment. The nozzle assembly 1 is easy and quick to install and remove, and generally will not cause damage or destruction to the structure of the nozzle assembly 1; after subsequent maintenance, the nozzle assembly 1 can be reinstalled and continue to be used normally.

[0064] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nozzle assembly, characterized in that, include: The nozzle body has an inlet section and an outlet section that are connected to each other; A nozzle is provided in the water outlet section, and the nozzle is used to spray the medium inside the nozzle body; and A cover plate is connected to the water outlet section, and the cover plate is provided with an opening to prevent the medium from being sprayed out; The cover plate is used to secure the nozzle assembly by means of a snap-fit ​​connection.

2. The nozzle assembly according to claim 1, characterized in that, The water inlet section is configured as a water inlet pipe; the water inlet pipe is used to connect to the water outlet channel to introduce the medium into the nozzle body, and the water inlet pipe and the water outlet channel are sealed by a sealing ring.

3. The nozzle assembly according to claim 1, characterized in that, The water outlet portion located outside the nozzle extends toward the cover plate to form a flow-expanding structure, and the flow-expanding structure corresponds to the opening; The medium ejected from the nozzle passes through the amplification structure and is ejected outward from the opening; and / or The spray direction of the nozzle intersects with the length direction of the water inlet section.

4. The nozzle assembly according to claim 1, characterized in that, The water outlet section is provided with a guide column, and the first end of the nozzle is provided with a mounting hole. The nozzle is sleeved on the first end of the guide column through the mounting hole. The outer periphery of the nozzle is sealed to the inner wall of the water outlet section. A water outlet channel is provided between the nozzle and the guide column, and the water outlet channel is connected to the spray hole at the second end of the nozzle.

5. The nozzle assembly according to claim 4, characterized in that, The nozzle has a mixing chamber at the bottom of its mounting hole, which is connected to the spray hole and the water outlet channel.

6. The nozzle assembly according to any one of claims 1-5, characterized in that, The cover plate is provided with snap-fit ​​fasteners for engaging; or The cover plate is provided with snap fasteners for locking; the snap fasteners are provided in pairs and are located on the edges of two opposite sides of the cover plate.

7. The nozzle assembly according to claim 6, characterized in that, The cover plate has a disassembly groove at the corresponding snap-fit ​​point, and the disassembly groove is used to insert a tool to pry the cover plate.

8. A surface cleaning device, characterized in that, include: The surface cleaning device has an outer shell and an internal water outlet channel. and The nozzle assembly according to any one of claims 1-7 is detachably connected to the main body of the surface cleaning device; the water inlet portion of the nozzle assembly is connected to the water outlet channel; The outer casing has mounting holes with steps; the cover plate engages with the steps via snap-fit, and the cover plate mates with the surface of the outer casing.

9. The surface cleaning device according to claim 8, characterized in that, The nozzle assembly is connected to the water outlet channel via a nozzle mounting base; the shape of the nozzle mounting base matches the nozzle assembly, the insertion port of the nozzle mounting base corresponds to the mounting hole, the nozzle assembly is inserted into the nozzle mounting base, and the water inlet part is sealed to the nozzle mounting base by a sealing ring.

10. The surface cleaning apparatus according to claim 8 or 9, characterized in that, The mounting hole has a groove, and the edge of the cover plate of the nozzle assembly has a flange that covers the buckle. The flange matches the shape of the groove and is designed to snap together. The flange matches the surface of the outer shell.

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