Suction head for dust collector and dust collector

Abstract

The utility model belongs to the field of dust collectors, and particularly provides a dust collector and a suction head for the dust collector. In order to solve the problem that the conventional dust collector is easy to be blocked and cannot operate normally, the utility model provides the suction head for the dust collector, which comprises a connecting part and a connecting part, a dust suction opening is formed in one end, far away from the connecting part, of the suction nozzle part, at least one air inlet is formed in the position, between the dust suction opening and the connecting part, of the suction nozzle part, and the distance L between the dust suction opening and the air inlet is larger than or equal to 50 mm, so that when the dust suction opening is blocked by foreign matter, the dust suction opening is blocked by the foreign matter. And external air enters the suction head for air supplement through the air inlet. According to the utility model, the technical problems are solved.

Description

Technical Field

[0001] This utility model belongs to the field of vacuum cleaners, specifically providing a vacuum cleaner and a vacuum cleaner head. Background Technology

[0002] Vacuum cleaners bring convenience to home cleaning, but when cleaning soft fabric items (such as near curtains, sofa cushions, and mattresses), the fabric can easily get stuck in the suction port, completely clogging it. Existing technology addresses this by placing an air inlet near the suction port. This allows air to enter through the air inlet when the fabric blocks the suction port, balancing the internal and external air pressure and preventing blockage.

[0003] However, because the air inlet and the dust inlet are close together, foreign objects can block both the dust inlet and the air inlet. This prevents the nozzle from effectively replenishing air from the air inlet, and the dust inlet becomes completely blocked, causing the vacuum cleaner to stop working. Utility Model Content

[0004] One objective of this invention is to solve the problem that existing vacuum cleaners are prone to malfunctioning due to clogged suction heads.

[0005] In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a vacuum cleaner head that can stably and effectively replenish air from the air inlet when the suction port is blocked by foreign objects, thereby clearing the suction port and improving the user's vacuum cleaner experience.

[0006] To achieve the above objectives, the present invention provides, in a first aspect, a vacuum cleaner nozzle, comprising:

[0007] Connecting part, used to connect the vacuum cleaner;

[0008] The nozzle has a suction port at one end away from the connecting part. The nozzle has at least one air inlet between the suction port and the connecting part, and the distance L between the suction port and the air inlet is greater than or equal to 50 mm, so that when the suction port is blocked by foreign objects, outside air can enter the nozzle through the air inlet to replenish the air.

[0009] Optionally, the distance L between the dust suction port and the air inlet is greater than or equal to 80 mm.

[0010] Optionally, the nozzle portion is a flat tube, and the air inlet is located at the root of the nozzle portion near the connecting portion.

[0011] Optionally, the end face of the nozzle portion where the suction port is formed is configured as an inclined surface.

[0012] Optionally, the nozzle portion has at least one air supply notch at one end with the dust suction port, and the air supply notch is connected to the dust suction port.

[0013] Optionally, the ratio of the distance L between the dust suction port and the air inlet to the length of the air inlet is greater than or equal to 1.8. Optionally, the ratio of the distance L between the dust suction port and the air inlet to the length of the air inlet is greater than or equal to 2.7.

[0014] Optionally, the air inlet is a strip-shaped opening.

[0015] Optionally, the angle between the length direction of the opening and the extension direction of the nozzle is selected from any value between 30° and 90°. In a second aspect, this invention provides a vacuum cleaner including the suction head described in any of the preceding claims.

[0016] Based on the foregoing description, those skilled in the art will understand that in the aforementioned technical solution of this utility model, by providing at least one air inlet between the suction port and the connecting part, and ensuring that the distance L between the suction port and the air inlet is greater than or equal to 50mm, when the suction port is blocked by foreign objects, outside air is allowed to enter the suction head through the air inlet to replenish air, thereby balancing the air pressure inside and outside the suction head and preventing the formation of a large negative pressure inside the suction head, which would prevent it from moving. Therefore, this invention ensures the normal operation of the vacuum cleaner.

[0017] Other beneficial effects of this utility model will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improvement purpose, features and advantages of this utility model. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, some embodiments of this utility model will be described below with reference to the accompanying drawings. Those skilled in the art should understand that the same reference numerals may indicate the same or similar components or parts in different drawings; the drawings of this utility model are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 A perspective view of the suction head of some embodiments of this utility model;

[0020] Figure 2 yes Figure 1 Front view of the suction head;

[0021] Figure 3 yes Figure 2 A bottom view of the suction head;

[0022] Figure 4 This is a schematic diagram of a vacuum cleaner.

[0023] Explanation of reference numerals in the attached figures:

[0024] 01. Vacuum cleaner;

[0025] 100. Suction head; 200. Main body;

[0026] 110. Connecting part;

[0027] 111. Suction port; 112. Root; 113. End face; 114. Button; 115. Locking hook;

[0028] 120. Suction mouth part;

[0029] 121. Air intake; 122. Air replenishment gap; 123. Side wall. Detailed Implementation

[0030] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0031] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the suction head 100 may include a connecting portion 110 and a suction nozzle portion 120. The connecting portion 110 is used to connect to the vacuum cleaner 01. A suction port 111 is formed at the end of the suction nozzle portion 120 away from the connecting portion 110. At least one air inlet 121 is provided between the suction port 111 and the connecting portion 110, and the distance L between the suction port 111 and the air inlet 121 is greater than or equal to 50 mm, so that when the suction port 111 is blocked by foreign objects, outside air can enter the suction head 100 through the air inlet 121 to replenish air.

[0033] Foreign objects mainly refer to soft fabric items, such as curtains, sofa cushions, and mattresses. When a user uses vacuum cleaner 01 to clean these fabric items, some of the foreign objects may be sucked into the suction port 111, potentially clogging it.

[0034] This invention provides at least one air inlet 121 between the suction port 111 and the connecting part 110, and the distance L between the suction port 111 and the air inlet 121 is greater than or equal to 50mm. When the suction port 111 is blocked by foreign objects, outside air enters the suction head 100 through the air inlet 121 to replenish the air, thereby enabling the suction head 100 to stably and effectively replenish air from the air inlet 121, and thus clearing the suction port 111.

[0035] In this embodiment, when the suction port 111 is accidentally blocked by foreign objects, the 50mm distance is sufficient to ensure that the air inlet 121 is not blocked by foreign objects at the suction port 111, and can quickly and effectively draw in air from the outside to provide the necessary air supply to the vacuum cleaner 01, thereby balancing the air pressure inside and outside the suction head 100, causing the foreign objects at the suction port 111 to fall off, clearing the suction port 111, and ensuring the normal operation of the vacuum cleaner 01.

[0036] Because fabric items are mostly soft and generally have a certain length, if the air inlet 121 is close to the dust suction port 111, the fabric item may also block the air inlet 121 near the dust suction port 111 when it blocks the dust suction port 111.

[0037] At the same time, the 50mm distance ensures the air replenishment effect while also taking into account the overall compactness of the nozzle 100.

[0038] Furthermore, the distance L between the suction port 111 and the air inlet 121 is greater than or equal to 80mm.

[0039] In this embodiment, as the distance L between the suction port 111 and the air inlet 121 increases, the space between the air inlet 121 and the suction port 111 becomes larger. This means that when the suction port 111 is blocked, it is more difficult for foreign objects at the suction port 111 to continue blocking the air inlet 121. The air inlet 121 is farther from the suction port 111, meaning it is farther from the item to be cleaned. Therefore, it is difficult for the air inlet 121 to directly suck up the item to be cleaned, avoiding the possibility of the item directly blocking the air inlet 121.

[0040] Meanwhile, maintaining a distance L greater than or equal to 80mm between the suction port 111 and the air inlet 121 reduces frequent shutdowns for cleaning due to clogging of the suction port 111, improving cleaning efficiency and reducing the user's workload, thus enhancing the overall user experience. For cleaning tasks requiring the handling of large amounts of dust, hair, or fine debris, an 80mm spacing better accommodates these needs, ensuring that the vacuum cleaner 01 maintains efficient and stable performance during long-term continuous operation.

[0041] like Figure 1 As shown, in some embodiments of this utility model, the nozzle 120 is a flat tube, and the air inlet 121 is located at the root 112 of the nozzle 120 near the connecting part 110. The flat tube structure increases the rigidity of the nozzle 120, making the vacuum cleaner 01 more stable during use. Positioning the air inlet 121 near the root 112 of the connecting part 110 reduces the risk of the air inlet 121 directly sucking in large foreign objects.

[0042] In some embodiments of this invention, the number of air inlets 121 is an integer multiple of 2, and they are symmetrically arranged on the side wall 123 of the flat tube. The symmetrical arrangement of multiple air inlets 121 allows airflow to enter evenly from both sides of the flat tube, ensuring that the air pressure inside the nozzle 120 is evenly distributed when the suction port 111 is blocked.

[0043] Furthermore, the symmetrically arranged air inlets 121 help optimize the airflow path within the nozzle section 120, allowing the airflow to flow more orderly after entering the suction head 100, reducing the generation of turbulence and eddies. This not only improves air replenishment efficiency but also reduces airflow noise, enhancing the user experience. Moreover, the even number and symmetrical arrangement of the air inlets 121 facilitates mold design and manufacturing during the production process, reducing production difficulty and costs.

[0044] Continue reading Figure 1 and Figure 2 In some embodiments of this utility model, there are two air inlets 121. One air inlet 121 is located on the side wall 123 of the flat tube, and the other air inlet (not shown in the figure) can be located on the side wall 123 on the other side of the flat tube.

[0045] In some embodiments of this invention, the end face 113 of the nozzle 120 with the suction port 111 is set as an angle. When a person holds the vacuum cleaner 01 for cleaning, the nozzle 120 often forms a certain natural angle with the ground according to the user's operating habits. The angled design of the end face 113 of the suction port 111 allows for a closer fit to the ground, ensuring no gaps in the suction path and effectively removing dust, debris, and other impurities from the ground, thereby significantly improving suction efficiency. The angled design not only improves suction efficiency but also makes operation more convenient and comfortable. Users can easily complete cleaning tasks without frequently adjusting the angle of the vacuum cleaner 01.

[0046] Furthermore, the angled design allows the suction port 111 to cover a larger area of ​​the floor when it comes into contact with the ground, compared to a flat suction port 111. This increases the coverage area of ​​a single cleaning cycle, improving cleaning efficiency. In large-area cleaning scenarios, such as living rooms and hallways, this expanded coverage area reduces the number of back-and-forth cleaning passes, saving cleaning time.

[0047] During cleaning, if the suction port 111 does not fit tightly against the ground, some dust may leak out from the edges with the airflow, causing secondary pollution. The angled design, through better fit, creates a relatively sealed space around the suction port 111, making it easier for dust to be sucked into the nozzle, preventing dust from overflowing and ensuring a clean and tidy cleaning environment.

[0048] like Figure 1 As shown, in some embodiments of this utility model, the suction nozzle 120 has at least one air supply notch 122 at one end with a suction port 111, and the air supply notch 122 is connected to the suction port 111. The air supply notch 122 is formed by recessing from the end face 113 of the suction port 111 toward the connecting portion 110, and the shape of the air supply notch 122 is semi-circular.

[0049] When the suction port 111 is blocked by foreign objects, the additional air supply gap 122 provides more air entry channels, allowing outside air to flow more smoothly into the suction head 100, effectively increasing the air supply volume, maintaining the air pressure balance inside the suction head 100, ensuring the vacuum cleaner 01 has stable suction power, and avoiding a significant drop in suction power due to the blockage of the suction port 111, thereby better clearing the suction port 111.

[0050] Those skilled in the art will understand that the air supply notch 122 is connected to the suction port 111, allowing the incoming air to act more directly on the vicinity of the foreign object clogging the suction port 111, thus improving the airflow distribution inside the suction head 100. The airflow can impact the blockage from multiple directions, more effectively blowing the blockage away from the suction port 111 and improving unblocking efficiency.

[0051] The semi-circular arc structure is relatively smooth, forming a more uniform stress distribution on the wall of the nozzle 120. Compared with shapes with sharp inner angles such as squares or triangles, the semi-circular arc notch is less likely to cause stress concentration on the wall of the nozzle 120 when subjected to airflow pressure and external impact, thereby enhancing the overall structural strength of the nozzle 120 and extending its service life.

[0052] In addition, the semi-circular edges have no sharp corners, making it less likely to snag or get stuck on items on the floor, such as carpet fibers or wires, during the cleaning process. This reduces the occurrence of accidents during cleaning and makes the cleaning operation smoother.

[0053] like Figure 1 As shown, in some embodiments of this utility model, there are two air filling gaps 122, which are symmetrically distributed on the wall of the flat tube. The number of air filling gaps 122 can also be other than two.

[0054] Continue reading Figure 1 Two air inlets 122 are symmetrically distributed on the wall of the flat tube, allowing air to enter the suction head 100 evenly from both sides, ensuring uniform air pressure inside the suction head 100 when the suction port 111 is blocked. This helps maintain the overall suction stability of the suction head 100, avoiding uneven suction caused by air supply from one side, and ensuring that foreign objects blocking the suction port 111 are impacted by a uniform airflow and more effectively cleared.

[0055] In some embodiments of this utility model, the ratio of the distance L between the dust suction port 111 and the air inlet 121 to the length of the air inlet 121 is greater than or equal to 1.8.

[0056] This ratio ensures an appropriate spatial distance between the air inlet 121 and the suction port 111. When the suction port 111 is blocked, the distance between the air inlet 121 and the suction port allows sufficient space for airflow to diffuse and buffer, acting evenly inside the suction head 100. This prevents the airflow from being too concentrated and impacting a single point due to the close proximity of the air inlet 121 to the suction port 111, thus avoiding uneven suction distribution. Sufficient distance also allows the airflow entering through the air inlet 121 to mix better with the existing airflow inside the suction head 100 as it flows towards the blocked area of ​​the suction port 111, forming a relatively stable and orderly airflow organization. This reduces turbulence and eddies, lowers airflow noise, and improves the airflow's ability to carry dust and debris, enabling the suction head 100 to operate efficiently even when blocked.

[0057] Furthermore, the ratio of the distance L between the suction port 111 and the air inlet 121 to the length of the air inlet 121 can be greater than or equal to 2.7.

[0058] This helps ensure sufficient airflow even in extreme blockage situations, such as when the suction port 111 is completely blocked by a large amount of foreign objects, and effectively acts on the blocked area, significantly enhancing the air supply effect, more powerfully impacting the blockage, and improving the success rate of unblocking.

[0059] The longer spacing helps to create a more stable air pressure field inside the suction head 100. Even when the suction port 111 is severely clogged and the suction power fluctuates significantly, the air continuously supplied by the air inlet 121 can gradually balance the air pressure within a larger space, making the overall suction power of the suction head 100 more stable. This is crucial for maintaining the efficient cleaning performance of the vacuum cleaner 01, especially in scenarios where prolonged cleaning or handling large amounts of debris leads to frequent clogging of the suction port 111, reducing the impact of sudden drops in suction power on cleaning effectiveness.

[0060] A larger distance between the air intake and the suction port 111 can, to some extent, prevent blockages from moving from the suction port 111 towards the air intake port 121, reducing the risk of the air intake port 121 becoming clogged. Because the longer distance allows the airflow to travel from the air intake port 121 to the suction port 111, it provides more opportunities for the airflow to disperse or carry away the blockages, rather than pushing them towards the air intake port 121. This ensures the air intake port 121 remains unobstructed, guaranteeing the air replenishment function remains effective.

[0061] like Figure 2 As shown, in some embodiments of this utility model, the air inlet 121 is a strip-shaped opening. Compared to some smaller circular or square openings, the elongated design of the strip-shaped opening makes it more difficult for foreign objects to completely block the air inlet 121. Even if some foreign objects approach the air inlet 121, due to the longer opening, there is still ample space for air to enter. Simultaneously, under the action of airflow, the elongated shape of the opening is more conducive to blowing away foreign objects, keeping the air inlet 121 unobstructed, and ensuring the reliability of the air replenishment function. Further, as... Figure 2 As shown, the angle between the length direction of the opening and the extension direction of the nozzle portion 120 is selected from any value between 30° and 90°, so as to minimize the pressure difference between the two ends in the length direction of the opening. For example, the angle between the length direction of the opening and the extension direction of the nozzle portion 120 can be 30°, 45°, 60°, 90°, etc.

[0062] In some other embodiments of this utility model, the air inlet 121 may also be an opening of other shapes.

[0063] In some embodiments of this utility model, the connecting part 110 includes a button 114 and a locking hook 115. Pressing the button 114 unlocks the locking hook 115, allowing the nozzle 100 and the vacuum cleaner 01 to be detachably connected. Those skilled in the art will understand that by pressing the button 114, the locking hook 115 will tilt towards the button 114, thereby unlocking the connection between the nozzle 100 and the vacuum cleaner 01, facilitating user maintenance and cleaning of the nozzle 100 of the vacuum cleaner 01.

[0064] In some other embodiments of this invention, the end of the nozzle 120 that forms the suction port 111 can be configured as a variable diameter structure, with the diameter of the suction port 111 gradually decreasing from the outside to the inside, for example, in the shape of an inverted cone. This design allows for more concentrated airflow during suction, enhancing the suction force of the suction port 111 on foreign objects, and even in the case of partial blockage, it helps to better clean foreign objects.

[0065] In some other embodiments of this invention, the edge of the end face 113 of the nozzle portion 120 forming the suction port 111 is made of an elastic material, such as rubber. This elastic edge can better conform to the ground or other clean surfaces, reducing air leakage and improving suction efficiency. Simultaneously, when encountering a large foreign object blocking the suction port 111, the elastic edge can deform slightly, facilitating the removal of the foreign object or the entry of air.

[0066] In some other embodiments of this utility model, the suction nozzle 120 adopts a multi-layer structure design. The outer layer is a wear-resistant hard material, such as high-strength plastic, to ensure the overall strength and durability of the suction nozzle 120. The inner layer is a flexible material, such as silicone, which is located near the dust suction port 111 and the air inlet 121. It can buffer the airflow to a certain extent, reduce the noise caused by the airflow impact, and when blocked, the flexible inner layer can better adapt to the shape of foreign objects, which is conducive to replenishing air and clearing blockages.

[0067] In some other embodiments of this utility model, a filter screen is provided at the air inlet 121. The filter screen can prevent larger particles of debris from entering the vacuum head 100 through the air inlet 121, thus avoiding damage to the inside of the vacuum cleaner 01. The filter screen can be designed to be detachable, making it convenient for users to clean or replace it regularly.

[0068] In some other embodiments of this invention, a guide structure, such as a guide groove or a guide plate, is provided on the inner wall of the air inlet 121. When air enters from the air inlet 121, the guide structure can guide the airflow direction, allowing the airflow to flow more smoothly to the blockage of the dust suction port 111, enhancing the air replenishment effect and improving the unblocking efficiency.

[0069] In some other embodiments of this utility model, the connecting part 110 can adopt a magnetic design, with magnetic materials respectively provided at the corresponding connection positions of the connecting part 110 of the suction head 100 and the vacuum cleaner 01. This connection method not only facilitates quick connection and disassembly of the suction head 100 and the vacuum cleaner 01, but also allows for automatic alignment during connection, ensuring a good seal. Simultaneously, the magnetic force can be rationally designed according to the suction power of the vacuum cleaner 01, ensuring that the suction head 100 will not easily detach during operation.

[0070] In some other embodiments of this utility model, a locking indicator light can be provided near the button 114 of the connecting part 110. When the nozzle 100 is successfully connected and locked to the vacuum cleaner 01, the indicator light shows green; when the button 114 is pressed to unlock or the connection becomes loose, the indicator light shows red. In this way, the user can intuitively understand the connection status between the nozzle 100 and the vacuum cleaner 01, and promptly detect and handle any problems.

[0071] In some other embodiments of this utility model, a buffer structure, such as a rubber pad or a spring, can be provided at the connection point between the connecting part 110 and the vacuum cleaner 01. When the vacuum cleaner 01 vibrates during operation, the buffer structure can reduce the vibration transmitted to the suction head 100, reduce the wear of the suction head 100 caused by vibration, and also help improve the stability of the connection between the suction head 100 and the vacuum cleaner 01, and extend the service life of the connecting part 110.

[0072] In some other embodiments of this invention, bristles can be provided at the edge of the air supply notch 122. The bristles are made of a soft and wear-resistant material, such as nylon bristles. When the suction head 100 is cleaning, the bristles can gently wipe the ground to assist in cleaning. At the same time, when the suction port 111 is clogged, the bristles can also help to prevent further blockage by foreign objects and help guide the airflow in.

[0073] In some embodiments of this invention, a sensor device can be provided in the nozzle 120 to monitor the blockage of the suction port 111 in real time. When a change in the degree of blockage of the suction port 111 is detected, the sensor can feed back a signal to the control system of the vacuum cleaner 01, thereby automatically adjusting the motor speed to optimize suction power and energy consumption. For example, if the blockage is minor, the motor speed can be appropriately reduced to save energy while ensuring cleaning effect; if the blockage is severe, the motor speed can be increased to enhance suction power and attempt to clear the blockage.

[0074] In some embodiments of this utility model, the air inlet 121, in addition to a strip-shaped opening, can also be designed as an adjustable opening structure. By setting an adjustment lever or knob at the air inlet 121, the user can flexibly adjust the opening size of the air inlet 121 according to the actual cleaning scenario and blockage situation. When cleaning areas with more dust, the opening size of the air inlet 121 can be increased to ensure sufficient air supply; when cleaning delicate items, the opening size can be decreased to prevent excessive air supply from affecting the suction accuracy.

[0075] In some embodiments of this invention, the nozzle 120 can be made of a multi-layered material or a material with antibacterial properties. Especially when cleaning the home environment, the antibacterial material can inhibit bacterial growth in the nozzle 120, prevent odors during cleaning, ensure indoor air quality, and provide users with a healthier cleaning experience.

[0076] Furthermore, a flexible transition section can be provided between the connecting part 110 and the nozzle part 120. This transition section is made of a flexible material, such as high-strength rubber, allowing the nozzle 100 to more flexibly adapt to cleaning areas of different angles and shapes during the cleaning process, such as the bottom of furniture and corners. This not only improves the convenience of cleaning but also reduces the risk of structural damage caused by forcibly bending the nozzle 100.

[0077] In some embodiments of this utility model, a storage function can be added to the overall design of the vacuum cleaner 01. For example, a special storage slot can be provided on the main body of the vacuum cleaner 01 to store small parts such as spare filters and cleaning brushes, making it convenient for users to access them when needed, while also preventing the loss of small parts and improving the overall practicality of the product.

[0078] Furthermore, this utility model also provides a vacuum cleaner 01, including any of the above-mentioned suction head 100 and main body 200, wherein the suction head 100 is mounted on the main body 200.

[0079] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. For example, unless otherwise specified, the terms "installation," "connection," "joining," and "fixing" can specifically refer to any feasible connection form such as bolt connection, screw connection, welding, insertion, riveting, fusion welding, or snap-fit.

[0080] The technical solution of this utility model has been described in conjunction with several embodiments above. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is not limited to these specific embodiments. Without departing from the technical principles of this utility model, those skilled in the art can disassemble and combine the technical solutions in the above embodiments, and can also make equivalent changes or substitutions to the relevant technical features. Any changes, equivalent substitutions, improvements, etc., made within the technical concept and / or technical principles of this utility model will fall within the protection scope of this utility model.

Claims

1. A vacuum cleaner nozzle, characterized in that, include: Connecting part, used to connect the vacuum cleaner; The nozzle has a suction port at one end away from the connecting part. The nozzle has at least one air inlet between the suction port and the connecting part, and the distance L between the suction port and the air inlet is greater than or equal to 50 mm, so that when the suction port is blocked by foreign objects, outside air can enter the nozzle through the air inlet to replenish the air.

2. The vacuum cleaner head according to claim 1, characterized in that, The distance L between the dust suction port and the air inlet is greater than or equal to 80mm.

3. The vacuum cleaner head according to claim 1, characterized in that, The nozzle is a flat tube, and the air inlet is located at the root of the nozzle near the connector.

4. The vacuum cleaner head according to claim 3, characterized in that, The end face of the nozzle portion where the suction port is formed is set as an angled surface.

5. The vacuum cleaner head according to claim 3, characterized in that, The nozzle portion has at least one air supply notch at one end with the dust suction port, and the air supply notch is connected to the dust suction port.

6. The vacuum cleaner head according to claim 3, characterized in that, The ratio of the distance L between the dust extraction port and the air inlet to the length of the air inlet is greater than or equal to 1.

8.

7. The vacuum cleaner head according to claim 3, characterized in that, The ratio of the distance L between the dust extraction port and the air inlet to the length of the air inlet is greater than or equal to 2.

7.

8. The vacuum cleaner head according to claim 3, characterized in that, The air inlet is a strip-shaped opening.

9. The vacuum cleaner head according to claim 8, characterized in that, The angle between the length direction of the opening and the extension direction of the nozzle is selected from any value between 30° and 90°.

10. A vacuum cleaner, characterized in that, The suction head includes any one of claims 1 to 9.

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