Vacuum cleaner nozzle

Abstract

A nozzle for connection with a hose of a vacuum cleaner. The suction nozzle is not only provided with an elbow and a shell unit, but also provided with an extension unit which can be in contact with a suction area such as the ground. The shell and the extension unit on the suction nozzle are connected flexibly, so that the suction nozzle is easier to operate. And a thin and flat narrow space is formed in the extension unit. The space is partially closed and can contain a certain amount of air. The extension unit becomes narrower closer to the elbow and the housing unit. The face, making contact with the ground, of the extension unit is a bottom plate, and an air suction opening with the front face facing the suction area is formed in the bottom plate. According to the distance from the suction source, suction ports with different diameters and different sizes are provided, so that the suction effect is improved, and suction in all directions is achieved.

Description

Technical Field

[0001] The present invention relates to embodiments of a suction hose attachment and a nozzle for use with a vacuum cleaner. The present invention discloses a nozzle specifically designed for use on hard surfaces and in confined spaces. Background

[0002] There are many solutions related to vacuum cleaners and hose attachments (or so-called nozzles). Vacuum cleaners are mainly used to remove dust from carpets and floors. For nozzles used on the floor, the most popular one is to design the nozzle body into an elongated box-like shape perpendicular to the direction of the hose, which is moved when in use. This allows to cover as much area on the floor as possible. For examples, see US 2214725-Ross, US2933753-Woodhull and US 3069716-Smith. US 2021 / 0085140-Santrizos is a typical example of this design. For nozzles for narrow spaces, US 4638527-Fleischhauer discloses a V-shaped attachment and nozzle for a vacuum cleaner. US5440782-Yamashita discloses an embodiment of a nozzle that allows entry into narrow spaces (but not vertically).

[0003] The disadvantage of the prior art is that the suction nozzle is designed to be too spacious, so that the inhaled air is spread over a large area in the "large" "box-shaped" suction nozzle. This makes the suction effect less than ideal, consumes a lot of power, and easily damages the motor. Many prior arts also allow the inhaled air to "escape" from the suction nozzle, so the required amount of dust cannot be effectively captured. SUMMARY OF THE INVENTION

[0004] The present invention aims to overcome the limitations of the prior art by designing a nozzle that is flexible, can enter narrow spaces, and has efficient suction capabilities. The present invention includes a nozzle for connecting to a hose of a vacuum cleaner. The nozzle has not only an elbow and a housing unit, but also an extension unit that can contact a suction area such as the ground. The housing and the extension unit on the nozzle are connected in a more flexible manner, making the nozzle easier to operate. A thin and flat narrow space is formed inside the extension unit. This space is partially closed and can accommodate a certain amount of air volume. The closer to the elbow and the housing unit, the narrower the extension unit becomes. The side of the extension unit that touches the ground, i.e. the bottom plate, is provided with an air inlet facing the suction area. Depending on the distance from the suction source, the air inlets of different diameters and sizes are provided in order to improve and optimize the suction effect and achieve suction from all directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The foregoing content of the present invention and many other advantages of the present invention may be better understood by referring to the following detailed description in conjunction with the accompanying drawings, in which: Figure 1

[0006] [Figure 1] 1a and 1b show perspective views of the present invention.

[0007] Figure 2 Shown is an exploded view of the present invention for the purpose of illustrating the present invention in more detail.

[0008] Figure 3a , 3b 3c, and 3d show embodiments of air intake ports on the base plate with different designs. Example Description

[0009] Figure 1a and 1b The present invention is fully demonstrated. Figure 1a The nozzle is shown in its normal position. The top side of the extension unit (2) is also shown. The elbow and housing unit (1) are already connected and have a tube end for connecting to a vacuum cleaner. Figure 1b What is shown is the bottom side of the suction nozzle, and the bottom plate (4) on the bottom side faces the suction area such as the ground.

[0010] Figure 2 The invention is shown in an exploded view for the purpose of disclosing the invention in more detail. The elbow and housing unit (1) on the suction nozzle is used to connect to a vacuum cleaner, while the extension unit (2) is used to contact the suction area such as the ground. The housing (1) and the extension unit (2) are swivel-connected at T and 2', and the position of the swivel connection is transverse to the direction of the length of the hose (20) and the direction of the suction air. The numeral 21 represents a pipe joint and / or a hose adapter pipe unit.

[0011] The extension unit (2) is connected to two channels (6, 7) from both sides of the housing unit (1), and air flows through these two channels. The two channels (6, 7) meet in the extension unit (2) to form a thin and flat space (8). The space is partially closed and can accommodate a certain amount of air. The closer to the elbow and the end of the housing unit (1), the narrower the extension unit (2) and the base plate (4) become. Numbers 22 and 24 represent parts for sealing and covering the housing (1) and the extension unit (2), namely a seal and a cover.

[0012] When designing the nozzle, it is recommended that the dimensions of the extension unit end on the nozzle be 40mm (width), 600mm (length) and 12mm (height), while the width of the extension unit near the elbow and housing unit (1) on the nozzle is increased to 55mm. This can improve the suction from the end to the housing (1) and from the housing (1) to the end. The vertical distance between the elbow and the housing unit (1) and the ground is only 52mm, so that it can reach under low furniture when cleaning private or public rooms and spaces indoors. The extension unit (2) is only 12mm high and adopts a flat design, which can better reach under low equipment.

[0013] The joints T and 2' allow the extension unit (2) to be rotated relative to the housing (1) by an amplitude of 2 to 200 degrees. There is also a sliding button (16) for locking the rotational movement, for example in a straight parallel position relative to the pipe (20) on the housing (1), and in the 45 and 90 degree positions. The rotational movement is a stepless movement, because the button (16) has an edge 16' that engages with a groove on the linkage part (3) of the housing (1).

[0014] The extension unit (2) has a flat bottom plate (4). The bottom plate is provided with air inlets 10, 11, 12, and 13 facing only the inhalation area. The air inlets 10, 11, 12, and 13 on the bottom plate (4) are arranged according to the distance from the inhalation source. The diameters and sizes of 11, 12, and 13 are different. It is best to design two rows of suction holes, such as Figure 1b and Figure 2 Among them, the suction hole (10) closest to the bottom plate (4) has the largest size, which is 8 mm, the suction holes (11) and (12) are both 7 mm, and the suction hole (13) closest to the suction end is 6 mm. The distance from the end of the bottom plate of the extension unit (2) to the first group of air suction holes is 10 mm, and the distance between the air suction holes is preferably 65 mm.

[0015] However, it is recommended to design the size of each suction hole and each suction port and the distance between them according to the length, width and height of the suction nozzle and the degree of narrowing of the extension unit, so as to calculate the total volume of the suction area of ​​the suction nozzle and the final suction force of the vacuum cleaner motor. Specifically, it is recommended to determine the total size of the area and the suction port according to the total volume and suction force in the suction nozzle. An important factor is that the suction port farthest from the suction force has the largest size. In addition, in order to capture dust and fibers, the size and narrowness of the suction port are also limited. The size of the suction holes and suction ports suggested in the present invention does not limit the scope of the claims of the present invention.

[0016] After adopting the dimensions provided by the present invention, the air suction volume generated through the elbow and the shell (1) is greater than the total air suction volume of the 8 air suction holes shown as the preferred embodiment of the base plate (4), and the air suction volume entering the hose (20) is greater than the air suction volume through the elbow and the shell.

[0017] The base plate (4) of the extension unit (2) is provided with a protruding knob (14) for adjusting the distance from the suction area and the ground. The preferred distance is 1 mm, which is particularly important when preventing the base plate from sticking to the hard and slippery suction area made of wood, laminate or stone due to suction.

[0018] An important aspect of the present invention is that the base plate (4-4"") used in the nozzle extension unit (2) is detachable and replaceable.

[0019] The plastic (polymer) used to make the housing (1) and the extension unit (2) is much harder than the material used to make the base plate (4), so that the base plate (4) can be inserted and snapped into the extension unit (2).

[0020] like Figure 3a , 3b , 3c, and 3d, the shapes of the air inlets on the replaceable bottom plate (4) are different. Available in different sizes, they can be used to handle small particles, fine fibers, short hair, long hair, and various types of light dirt and dust such as fibers. This is achieved by designing suction ports in different forms and shapes, such as: Rows of round holes; round holes arranged in a square pattern in a diagonal manner; slits arranged longitudinally; slits arranged vertically and slits arranged diagonally, etc. Figure 3a Shown is a design of a bottom plate (4') having three groups of air intake holes arranged diagonally in a square (30) or diamond shape. Figure 3b Shown is a design of a base plate (4") having diagonal slits or longitudinal openings (31) therein. Figure 3c A design of a base plate (4'') is shown having two slits or longitudinal openings (32) running parallel to the length of the base plate. Figure 3d Shown is a design of a base plate (4'') having two parallel slits or longitudinal openings (33) running the length of the base plate. The size of the protruding knob (14) is the same in all figures.

[0021] The invention can be modified and changed within the scope of the inventive concept disclosed in the drawings and further stated in the claims. If some functional elements can be replaced with other elements having the same functions performed by the various disclosed embodiments, such technical equivalents are also included in the scope of the present invention.

Claims

1. A nozzle for use with a vacuum cleaner, comprising: - an elbow and housing unit (1) for connection to a hose - an extension unit (2) for contacting a suction area such as the ground, and the housing and the extension unit are rotatably connected, characterized in that; - The swivel connection is perpendicular to the length of the hose, - the extension unit is connected to two channels (6, 7) from both sides of the housing unit (1) and air flows through these two channels, - The two channels (6, 7) meet in the extension unit (2) to form a thin and flat space (8). This space is partially closed and can accommodate a certain amount of air. - The extension unit (2) becomes narrower towards the elbow and the end of the housing unit (1).

2. A nozzle for use with a vacuum cleaner according to claim 1, wherein the extension unit (2) has a uniform thickness over most of the length of the nozzle.

3. A nozzle for use with a vacuum cleaner according to claim 1, wherein the extension unit (2) has a flat bottom plate (4-4""), on which a plurality of suction openings are arranged facing the suction area.

4. A nozzle for use with a vacuum cleaner according to claims 1 and 3, wherein the suction openings (10, 11, 12, 13) on the base plate have different diameters and sizes depending on the distance from the suction source.

5. A nozzle for use with a vacuum cleaner according to claims 1 and 3, wherein the extension unit (2) has the option of using a removable and replaceable base plate (4-4"").

6. A nozzle for use with a vacuum cleaner according to claim 4, wherein the diameter or size of the air inlet on the base plate near the extension unit is much larger than the diameter or size of the air inlet near the elbow and the housing unit (1).

7. A nozzle for use with a vacuum cleaner according to claim 1, wherein the space and volume (8) within the extension unit (2) is curved between different flat surfaces.

8. The nozzle for use with a vacuum cleaner according to claim 1, wherein the extension unit (2) can rotate 200 degrees relative to the housing (1).

9. A nozzle for use with a vacuum cleaner according to claims 1 and 8, wherein the extension unit (2) has means for locking in a plurality of positions, for example, in a position in line parallel to the pipe and hose (20), and in positions at 90 degrees and 45 degrees.

10. A nozzle for use with a vacuum cleaner according to claims 1 and 3, wherein the extension unit (2) has the option of using a removable and replaceable base plate (4-4"").

11. A nozzle for use with a vacuum cleaner according to claims 1 and 10, wherein the suction openings on the replaceable base plate (4-4") are of different shapes and sizes and can be used to handle a variety of light dirt and dust, including: - Particles -fiber -Short hair -Long hair 12. A nozzle for use with a vacuum cleaner according to claims 1 and 10, wherein the replaceable base plate (4-4"") is provided with suction ports of various forms and shapes, including: -Rows of round holes; - Round holes arranged in a diagonal square pattern - Longitudinally arranged slits - Vertically arranged slits -Diagonal slits

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