Vacuum cleaner head

Abstract

The present invention relates to a vacuum cleaner head, which includes a rotor into which foreign objects are sucked in through openings formed on the outer periphery, and a drum casing having a bottom surface formed with slits through which foreign objects flow and surrounding the outside of the rotor, and which sucks in foreign objects through the entire area of ​​the open bottom slits, while at any one moment concentrating suction on an open surface where the openings of the rotor and the slits of the drum casing meet at the same time, thereby providing a larger suction force with a motor of the same capacity.

Description

Technical Field

[0001] The present invention relates to a vacuum cleaner head, including a rotor through which foreign matter is sucked through an opening formed on the outer peripheral edge; and a drum casing having a slit formed on the bottom surface through which foreign matter flows in and surrounding the outside of the rotor. The present invention relates to a vacuum cleaner head that sucks foreign matter through the entire area of the slit on the open bottom surface, but concentrates the suction on the open surface where the opening of the rotor and the slit of the drum casing meet at a certain moment, and provides a greater suction force with the same capacity motor.

Background Art

[0002] Generally, a vacuum cleaner is a device that sweeps or scatters foreign matter such as dust and hair existing in a cleaning space, sucks the scattered foreign matter such as dust and hair by suction force, and cleans the area to be cleaned.

[0003] Conventional vacuum cleaners used to clean floors in homes, offices or stores are composed of a head part for sucking foreign matter, a motor for generating suction force, a dust collector for collecting dust and dirt in one place, and a connecting part connecting the head part and the dust collector.

[0004] The head part that can be detachably attached to the suction inlet of the vacuum cleaner includes a general head that can easily clean a wide range, a gap head that can clean narrow gaps such as window frames and door frames, and a brush head suitable for various usage environments such as the space above a wardrobe and the gap between furniture.

[0005] The general head formed with a long width has the advantage of being able to easily clean a large area. Therefore, the general head is used when cleaning a wide floor surface such as a living room, a back room, or a concert hall. However, the suction force generated by the motor is dispersed over the wide area of the general head, and there is a disadvantage that the suction force is insufficient to suck dust and heavy foreign matter sticking to the floor, resulting in a decrease in the cleaning effect.

[0006] Crevice heads, which can easily clean window frames and furniture gaps, have a smaller suction opening area compared to standard heads. Because the suction power generated by the motor is concentrated on a small area, they have the advantage of potentially having higher suction power. However, when cleaning a large space with a narrow crevice head, the user has to move the vacuum cleaner's suction opening more than with a standard head, and when cleaning for a long time, the weight of the vacuum cleaner can cause fatigue and inconvenience to the arms and waist.

[0007] Furthermore, considering the airflow within a vacuum cleaner, in conventional vacuum cleaners, foreign objects reach the dust collector via the vacuum head and connecting parts, where a filter in the dust collector removes dust from the air. The motor that draws in air is located behind the dust collector. Therefore, as you clean, dust, hair, and other foreign objects accumulate in the filter inside the dust collector, clogging the motor's intake port and reducing the vacuum cleaner's suction power. Increasing the motor's rotation speed to raise the reduced suction power to a certain level increases the vacuum cleaner's power consumption and has the disadvantage of generating loud noise.

[0008] Therefore, wireless vacuum cleaners and robotic vacuum cleaners that use batteries to power their motors must increase their battery capacity to match the increased power consumption. Wireless vacuum cleaners, which are used for easy cleaning, can become inconvenient for users due to the heavy weight of the battery, and they also have the disadvantage of requiring frequent charging due to the reduced operating time caused by the increased power consumption.

[0009] Therefore, there is a need for the development of a vacuum cleaner head that can remove dust and foreign objects adhering to large floor surfaces with strong suction power, while also being comfortable to use even during prolonged cleaning, and that can maintain a constant suction power to reduce power consumption. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Korean Registered Utility Model No. 20-0243532 [Patent Document 2] Korean Published Patent No. 10-2020-0117358 [Overview of the project] [Problems that the invention aims to solve]

[0011] To solve the above-mentioned problems, the present invention provides a vacuum cleaner head in which a slit into which foreign matter is sucked is formed on the bottom surface of the drum casing, a rotor with an opening and a blocking portion is inserted into the drum casing, and a portion of the area of ​​the slit is closed by the blocking portion, thereby preventing the suction force generated by the motor from being distributed over the entire area of ​​the slit, and concentrating the suction force at the open surface where the slit and the opening overlap, thereby enabling the vacuum cleaner head to suck up foreign matter with strong suction power.

[0012] Another object of the present invention is to provide a vacuum cleaner head that can clean a large area with strong suction power while using a small motor, because the rotor rotates with a rotary motor, and the open surface where the spiral opening and the slit overlap is varied so as to cover the entire area of ​​the slit.

[0013] Another object of the present invention is to provide a vacuum cleaner head that can clean a wide area by changing the position of the rotor opening, while limiting the suction to only floor surfaces containing foreign matter, and concentrating the suction at the point where the open slit of the drum casing and the opening of the rotor meet simultaneously on the floor surface.

[0014] Another object of the present invention is to provide a vacuum cleaner head that minimizes the hollow portion inside the rotor by forming the body surface so that the rotor's blocking portion is filled all the way to the center, and foreign matter that flows into the rotor through the open surface does not remain inside the rotor but is guided by the blocking portion to the opening on the opposite side by the shortest distance, thereby preventing clogging of foreign matter inside the rotor, increasing suction efficiency, and suppressing noise.

[0015] Another objective of the present invention is to provide a vacuum cleaner head that can provide a large suction force with the same rotational force, and can use a small-capacity motor, thereby reducing noise and power consumption. [Means for solving the problem]

[0016] To achieve the above objective, the present invention provides a rotor (110) through which foreign matter is sucked in via an opening (111) having a spiral outer edge; and a hollow interior into which the rotor (110) is inserted, with a slit (121) at the bottom surface that is open to allow foreign matter from the surface to be cleaned to flow in. In the axial direction The drum casing (120) is formed and has a cover surface (127) surrounding the rotor (110), and the slit (121) exposes an open surface (121a) formed by the opening (111) of the rotor (110) and a closed surface (121b) formed by a closed portion (113) that blocks foreign matter, and the open surface (121a) and the closed surface (121b) In the axial direction The opening surface (121a) of the slit (121) is simultaneously positioned by the rotating rotor (110). In the axial direction It is variable.

[0017] Furthermore, the rotor (110) of the present invention is formed such that an opening (111) into which foreign matter is sucked in and a blocking section (113) into which foreign matter is blocked intersect, and the opening (111) is formed continuously.

[0018] Furthermore, the slit (121) of the drum casing (120) of the present invention sucks in foreign matter only at the open surface (121a).

[0019] Furthermore, the upper part of the drum casing (120) of the present invention has a discharge hole (128) through which foreign matter that has flowed in from the open surface (121a) where the opening (111) and slit (121) of the rotor (110) are simultaneously formed is discharged.

[0020] Further, the open surface (121a) exposed to the slit (121) by the rotation of the rotor (110) of the present invention moves in the horizontal direction and is orthogonal to the moving direction of the head.

[0021] The present invention further includes a roller neck (130) into which the drum casing (120) is inserted, and foreign matter flowing in from an open surface (121a) where an opening (111) of the rotor (110) and a slit (121) are simultaneously formed is guided to an intake pipe (134) via the drum casing (120).

[0022] Further, the roller neck (130) of the present invention is formed to be longer than the drum casing (120) and includes a side passage (132) through which foreign matter passes.

[0023] Further, the rotor (110) of the present invention has a hollow interior, and foreign matter moves to a through hole (112) formed on the side surface.

[0024] Further, in the rotor (110) of the present invention, the blocking portion (113) where foreign matter is blocked has a body surface (115) with a blocked interior formed therein. The foreign matter that has flowed in passes through the open surface (121a) and penetrates through the opening (111) on the opposite side of the center through the space between the body surfaces (115).

Advantages of the Invention

[0025] The vacuum cleaner head according to the present invention has a slit for sucking foreign matter formed on the bottom surface of the drum casing, and a rotor having an opening and a blocking portion is inserted into the drum casing, and a part of the area of the slit is closed by the blocking portion. Therefore, it is possible to prevent the suction force generated by the motor from being dispersed over the entire area of the slit, and the suction force is concentrated on the open surface where the slit and the opening overlap, so that foreign matter can be sucked with a strong suction force.

[0026] Furthermore, the present invention has the advantage of being able to clean a large area with strong suction power even when using a small motor, because the rotor rotates with a rotary motor, and the open surface where the spiral opening and the slit overlap is variable so that it covers the entire area of ​​the slit.

[0027] Furthermore, the present invention has the advantage of being able to clean a wide area by changing the position of the rotor opening while limiting the suction to only the floor surface containing foreign matter, and concentrating the suction at the point where the open slit of the drum casing and the opening of the rotor meet simultaneously on the floor surface.

[0028] Furthermore, the present invention minimizes the hollow portion inside the rotor by forming the body surface so that the rotor's blocking portion is filled all the way to the center. As a result, foreign matter that flows into the rotor through the open surface does not remain inside the rotor but is guided by the blocking portion to the opening on the opposite side via the shortest distance. This eliminates blockage of foreign matter inside the rotor, increases suction efficiency, and suppresses noise.

[0029] Furthermore, the present invention has the advantage of providing a large suction force with the same rotational force, allowing the use of a small-capacity motor, resulting in lower noise and reduced power consumption. [Brief explanation of the drawing]

[0030] [Figure 1] This is a perspective view showing the vacuum cleaner head of Embodiment 1 of the present invention. [Figure 2] This is a perspective view showing a rotor with a spiral opening that rotates in one direction, relating to the vacuum cleaner head of Embodiment 1 of the present invention. [Figure 3] This is a perspective view of a rotor with a spiral opening that rotates symmetrically, relating to a vacuum cleaner head of Embodiment 1 of the present invention. [Figure 4] This is a perspective view showing the slits in the drum casing of the vacuum cleaner head of Embodiment 1 of the present invention, where (a) shows the rotary motor coupled to the timing belt, and (b) shows the rotary motor coupled to the gear. [Figure 5] (a) is a perspective view showing the rotor of the vacuum cleaner head of Embodiment 1 of the present invention coupled to the drum casing, (b) is a bottom view showing the rotor coupled to the drum casing, and (c) is a bottom view showing the rotor rotating and the open surface moving horizontally in Figure 5(b). [Figure 6] This is a perspective view showing the roller neck of a vacuum cleaner head according to Embodiment 1 of the present invention. [Figure 7] This is a side view showing the roller neck of a vacuum cleaner head according to Embodiment 1 of the present invention. [Figure 8] (a) is a perspective view showing the rotor, drum casing, and roller neck of the vacuum cleaner head of Embodiment 1 of the present invention coupled together, and (b) is a perspective view showing the rotor, drum casing, roller neck, and shielding membrane coupled together. [Figure 9] (a) is a flowchart showing an automatic control method for the rotational speed of the rotor of a vacuum cleaner head according to Embodiment 1 of the present invention, and (b) is a flowchart showing a manual control method for the rotational speed of the rotor. [Figure 10] This is a diagram showing the rotor and drum casing of the vacuum cleaner head according to Embodiment 1 of the present invention, in a coupled state. [Figure 11] This is a perspective view showing the rotor related to the vacuum cleaner head of Embodiment 2 of the present invention. [Figure 12] Embodiment 2 of the present invention shows a vacuum cleaner head in which the body surface of the rotor's shut-off portion has a square cross-section, where (a) is a perspective view showing a portion of the body surface cross-sectioned, and (b) is a front view showing a portion of the body surface cross-sectioned. [Figure 13] Embodiment 2 of the present invention relates to a vacuum cleaner head in which the body surface of the rotor's shut-off portion has a triangular cross-section, where (a) is a perspective view showing a portion of the body surface cross-sectioned, and (b) is a front view showing a portion of the body surface cross-sectioned. [Figure 14]This figure shows a drum casing relating to a vacuum cleaner head of Embodiment 2 of the present invention, where (a) is a perspective view showing a configuration in which rotation is transmitted to the rotor via gears, and (b) is a perspective view showing a configuration in which rotation is transmitted to the rotor via a timing belt. [Figure 15] This is a perspective view showing the suction flow in the state in which the rotor and drum casing of the vacuum cleaner head of Embodiment 2 of the present invention are coupled. [Figure 16] This is a perspective view showing the roller neck of a vacuum cleaner head according to Embodiment 2 of the present invention. [Modes for carrying out the invention]

[0031] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings, so that they can be easily implemented by a person with ordinary skill in the art. [Examples]

[0032] Figure 1 is a perspective view showing the vacuum cleaner head according to the present invention.

[0033] As shown in Figure 1, the vacuum cleaner head of the present invention includes a rotor 110 through an opening 111 having a spiral outer edge into which foreign matter is sucked; a drum casing 120 into which the rotor 110 is inserted, with a slit 121 formed at the bottom surface that is open to allow foreign matter from the surface to be cleaned to flow in, and a cover surface 127 surrounding the rotor 110.

[0034] The drum casing 120 is inserted into a roller neck 130 into which foreign matter flowing in from an open surface 121a where the opening 111 and slit 121 of the rotor 110 are simultaneously formed is guided to the intake pipe 134 via the drum casing 120;

[0035] The vacuum cleaner head 100 of the present invention has a slit 121 formed on its bottom surface that is open to suck foreign matter from the outside into the vacuum cleaner, and a suction pipe 134 formed on its top or rear surface, which is a hollow tube that guides the foreign matter sucked in from the slit 121 to a dust collector.

[0036] During cleaning, the head moves vertically back and forth by the user while in contact with the floor surface to be cleaned. The suction force generated by a motor (not shown) located away from the suction pipe 134 is transmitted to the head, drawing foreign matter into the head. The foreign matter, receiving the suction force acting on the head, is drawn into the head and, following the airflow, reaches the dust collector via the connecting part.

[0037] Depending on the environment to be cleaned and the purpose of use, the head may be provided in various shapes. Examples include a wide general-purpose head for easily cleaning large floor surfaces, a crevice head for sucking up foreign objects accumulated in gaps in doors or furniture, and a brush head with a brush that scatters and sucks up accumulated dust. In this invention, a wide general-purpose head for easily cleaning large floor surfaces is described as an example, but the invention is not limited to this, and can be modified in various ways within the scope of the same technical idea.

[0038] The vacuum cleaner head 100 of the present invention is detachably connected to a connecting part that connects the head and the dust collector, and is replaceable. Therefore, when dust accumulates and cleaning is necessary, only the head can be separated and cleaned separately, and when damage occurs and the suction function is lost, it can be replaced with another head. The configuration of the upper part of the suction pipe 134, including the motor, can be that of a general vacuum cleaner and is a well-known configuration, so its explanation will be omitted.

[0039] Figures 2 and 3 are perspective views showing the rotor related to the vacuum cleaner head of the present invention.

[0040] As shown in Figures 2 and 3, the rotor 110 is formed as a hollow cylinder, but is provided with through holes 112 at both ends, with holes formed in the axial direction (longitudinal direction). A certain area of ​​the outer edge is formed as an opening 111 that allows communication between the inside and outside of the rotor 110, and a certain area is formed as a closed section 113. The opening 111 into which foreign matter is sucked in and the closed section 113 that blocks foreign matter are formed to intersect, and the opening 111 is formed continuously.

[0041] Here, as shown in Figure 2, the through-hole 112 may be formed to protrude outward in the axial direction and be inserted into and supported by a casing hole 122 of the drum casing 120. The through-hole 112 may be a flat shape that does not protrude outward (not shown) or may be formed to protrude inward (not shown). In the case of a flat shape or a shape that protrudes inward, a shaft (not shown) protrudes from the drum casing 120 and is inserted into the through-hole 112. The shape of the through-hole 112, such as protruding outward, protruding inward, or being formed flat, can be easily changed by an ordinary engineer, and here, the shape of the through-hole 112 that protrudes outward will be illustrated and explained. The present invention may include any shape in which the through-hole 112 protrudes inward or outward, or a shape that does not protrude inward or outward. Depending on such changes in the shape of the through-hole 112, the configuration for rotating the rotor 110 can also be easily changed by adding a shaft to the drum casing 120, so that will not be explained.

[0042] Furthermore, while it is preferable that the diameter of the through-hole 112 be smaller than the diameter of the hollow portion of the rotor 110, it is not limited to this, and it can be formed to be the same as or larger than the diameter of the hollow portion.

[0043] In this invention, the shape of the opening 111 in Figures 2 and 3 is referred to as a spiral shape. The spiral shape in Figure 2 is a continuous unidirectional opening shape throughout the entire rotor 110, while the spiral shape in Figure 3 is a symmetrical V-shape that is continuous in both directions around the center of the rotor 110.

[0044] In the embodiment of the present invention, the suction force generated by the motor is transmitted to the head, and external foreign matter is sucked into the hollow interior of the rotor 110 through the open slit 121 and the opening 111 of the rotor 110. The sucked-in foreign matter is discharged through through holes 112 formed at both ends or one end of the rotor 110, transmitted to the side passages 132 formed at both ends or one end of the roller neck 130, and moves to the upper dust collection section (not shown).

[0045] The rotor 110 is positioned inside the hollow drum casing 120 and coupled to it so that it can rotate. That is, the cover surface 127 of the drum casing 120 covers the shut-off portion 113 of the rotor 110. In order to prevent rotational resistance from being generated by friction caused by contact between the shut-off portion 113 of the rotor 110 and the cover surface 127 of the drum casing 120, the outer diameter of the rotor 110 is formed to be smaller than the inner diameter of the drum casing 120.

[0046] Alternatively, as shown in Figures 10(a) and (b), the cover surface 127 of the drum casing 120 (where the cover surface is not the location where the slit 121 is formed) has a small gap between it and the outer edge of the rotor 110. In this case, the distance a between the inner wall surface of the slit 121 and the rotor 110 is formed to be the same as or smaller than the distance b between the cover surface 127 and the rotor 110.

[0047] Foreign matter outside the drum casing 120 is drawn into the rotor 110 through the slit 121 and opening 111, as shown in Figures 10(a) and (b). An airflow is formed so that it is directed towards the inside of the rotor 110, and the foreign matter moves along the formed airflow.

[0048] Although an opening 111 and a blocking portion 113 are formed on the outer periphery of the rotor 110, it is sufficient that the cylindrical rotor 110 rotates such that, at some point in time, a portion of the opening 111 and the blocking portion 113 are exposed in the slit 121. The shape is not limited to that shown in Figures 2 and 3, and various modifications are possible.

[0049] First, as shown in Figure 2, the openings 111 of the rotor 110 may be formed in a unidirectional spiral shape with a constant lead angle along the outer edge of the rotor 110. A barrier portion 113 is formed between the openings 111. The rotating rotor 110 is partially exposed to foreign matter through the open slit 121 of the drum casing 120 that contacts the floor surface. At this time, both the opening 111 and the shut-off section 113 must be exposed by the slit 121 simultaneously. That is, if only the opening 111 is exposed by the slit 121, the suction force will be dispersed throughout the entire slit 121, making it difficult to generate a large suction force. Therefore, the opening 111 must never be completely exposed to the slit 121 at any moment. Also, to avoid putting undue strain on the motor, the shut-off section 113 must never be completely exposed to the entire slit 121 at any moment. The opening 111 and the shut-off section 113 must always coexist within the slit 121.

[0050] Next, as shown in Figure 3, the opening 111 of the rotor 110 is formed in a spiral shape along the outer edge of the rotor 110, but it may be formed in a symmetrical shape in the left-right direction with respect to the center of the rotor 110. The configuration, function, and coupling relationship are the same as those of the rotor having the unidirectional opening 111 shown in Figure 2.

[0051] In such a rotor 110, the opening 111 and the blocking portion 113 are formed in a continuous manner so that at every moment in the rotating rotor 110, the opening 111 and the blocking portion 113 are simultaneously formed across the entire axial surface. Therefore, the opening 111 is formed on the side of the blocking portion 113, and the blocking portion 113 is formed on the side of the opening 111.

[0052] As the rotor 110 rotates, the opening 111 and the shut-off section 113 are simultaneously exposed to the slit 121 in the bottom surface (floor surface). As a result, the suction force is blocked at the shut-off section 113, and the motor's suction force is concentrated at the opening 111. Since the opening 111 exposed to the slit 121 is smaller than the slit 121, the suction force does not act distributed across the entire slit 121, but rather concentrates on the open opening 111. Therefore, the suction force becomes very large when using a motor of the same capacity.

[0053] The opening 111 exposed by the slit 121 has a smaller area than the blocking section 113, which can reduce the loss of suction power and is therefore suitable for long battery life and low noise, but it may be provided in various ways depending on the object to be cleaned and the area to be cleaned.

[0054] Foreign matter (objects to be cleaned) is sucked into the hollow interior of the rotor 110 through the spirally shaped opening 111 and discharged through a through-hole 112 formed at the end of the rotor 110. The through-hole 112 is an extension of the hollow interior and is open inside, allowing the sucked-in foreign matter to move. At this time, the suction force generated by the motor of the main unit is transmitted through the suction pipe 134 connecting the head unit and the dust collector, and the suction force transmitted to the head unit acts at the opening 111 of the rotor 110 via the through-hole 112, allowing the foreign matter to be sucked into the interior of the rotor 110.

[0055] Figure 4 is a perspective view showing the slits in the drum casing of the vacuum cleaner head of the present invention, where (a) shows the configuration in which the rotary motor is coupled to a timing belt, and (b) shows the configuration in which the rotary motor is coupled to a gear.

[0056] As shown in Figure 4, the drum casing 120 is formed from a hollow tube, but casing holes 122 supporting the through holes 112 are formed at both ends, and a slit 121 is formed on the bottom surface to form an open passage that extends to the hollow interior of the rotor 110. A cover surface 127, consisting of the parts other than the slit 121, is formed on the outer periphery of the drum casing 120. As described above, if the through holes 112 formed in the rotor 110 are formed at only one end instead of both ends, the casing holes 122 may also be formed at only one end of the drum casing 120. Furthermore, the through holes 112 may protrude outside the casing holes 122 and be rotated by a rotary motor 123, which will be described later.

[0057] The drum casing 120 is hollow inside, and the rotor 110 is inserted inside and rotates. At this time, the drum casing 120 and the rotor 110 may be separated such that there is a constant gap b between the cover surface 127 and the outer edge of the rotor 110, as shown in Figure 10(a), or the distance between the cover surface 127 and the outer edge of the rotor 110 may be inconsistent, as shown in Figure 10(b). When the distance between the cover surface 127 and the outer edge of the rotor 110 is inconsistent, the gap between the rotor 110 and the cover surface 127 is smallest at the inner wall surface of the slit 121, and larger at other locations.

[0058] The casing hole 122 must be shaped to support the through hole 112 of the rotor 110. That is, the through hole 112 may be formed to protrude outward and be inserted into the casing hole 122, or it may be a flat shape (not shown) that does not protrude outward, or it may be formed to protrude inward (not shown), with the casing hole protruding in a shaft shape and being inserted into the through hole 112. As described above, the shape of the through hole 112 can be easily changed by an ordinary engineer, and therefore the shape of the casing hole 122 that supports the through hole 112 can also be changed to various shapes corresponding to the shape of the through hole 112. In this embodiment, a shape in which the through hole 112 protrudes outward and is inserted into the casing hole 122 will be illustrated and explained.

[0059] Figure 10(a) is a cross-sectional view showing the suction flow when the rotor and drum casing of the vacuum cleaner head of the present invention are coupled, and Figure 10(b) is a cross-sectional view showing the suction flow when the rotor and drum casing are coupled eccentrically.

[0060] As shown in Figures 10(a) and (b), the rotor 110 is located inside the drum casing 120, so foreign matter is drawn in through the slit 121 on the bottom surface of the drum casing 120 to the opening 111 of the rotor 110 inside. That is, the cover surface 127 of the drum casing 120 surrounds the outside of the rotor 110, and except for the slit 121, the rotor 110 cannot communicate with the outside inside the cover surface 127, and foreign matter can be sucked inside through the opening 111 of the rotor 110 via the slit 121 formed on the bottom surface of the drum casing 120. The foreign matter first passes through the slit 121 of the drum casing 120 and then is sucked inside through the opening 111 of the rotor 110.

[0061] The surface of the drum casing 120 where the slit 121 is opened by the opening 111 of the rotor 110 is referred to as the open surface 121a, and the surface where the slit 121 is closed by the blocking portion 113 of the rotor 110 is referred to as the blocking surface 121b.

[0062] In this case, the cover surface 127 of the drum casing 120 is positioned very close to the outer edge of the rotor 110, as shown in Figures 10(a) and (b), but there is a gap between them due to the rotation of the rotor 110. In this case, the distance a between the inner wall surface of the slit 121 and the rotor 110 is formed to be smaller than or the same as the distance b between the cover surface 127 and the rotor 110. Even though a gap exists between the cover surface 127 and the rotor 110, the opening 111 of the rotor 110 is surrounded by the cover surface 127, so foreign matter cannot be sucked in through the opening 111 which is blocked by the cover surface 127, but can be sucked into the interior of the rotor 110 through the open surface 121a of the slit 121.

[0063] If a foreign object sucked into the rotor opening 111 is long and cannot be completely sucked in by the open surface 121a inside the slit 121, the foreign object will be sucked into the opening 111 while passing through the cover surface 127 away from the slit 121, or while moving back to the position of the slit 121 after passing through the cover surface 127. In this case, if the distance between the rotor 110 and the cover surface 127 is very narrow, as is the distance between the inner wall surface of the slit 121 and the rotor 110 (Figure 10(a)), the foreign object on the inner wall surface may adhere from the opening 111 to the blocking portion 113, which may hinder the sucking of the foreign object or the rotation of the rotor 110. In such cases, as shown in Figure 10(b), it is preferable to make the distance b between the rotor 110 and the cover surface 127 larger than the distance a between the inner wall surface of the slit 121 and the rotor.

[0064] Since the airflow in the space b between the cover surface 127 and the rotor 110 is directed towards the inside of the rotor 110, foreign matter inside the rotor 110 is not discharged to the outside of the rotor 110 through the opening 111 against the airflow, but can be discharged through the through hole 112.

[0065] The cover surface 127 surrounds the opening 111 and the blocking portion 113 that constitute the outer edge of the rotor 110, and no suction force is generated outside the cover surface 127 at the opening 111 which is closed by the cover surface 127. Therefore, the slit 121 can concentrate its action on the open surface 121a opened by the opening 111, thereby strengthening the suction force.

[0066] In the drum casing 120, the parts other than the slit 121 and casing hole 122 are closed by the cover surface 127 so that the inside and outside do not communicate. Since the drum casing 120 is configured to transmit the suction force of the motor, if it were open, the suction force would be dispersed, and it would not be possible to provide a large suction force.

[0067] The opening 111 of the rotor 110 is formed along the outer edge and is open overall in the longitudinal direction (axial direction). To prevent foreign matter that is sucked in through the slit 121 and enters the interior of the rotor 110 from being discharged through the other opening 111 of the rotor 110, and to discharge the foreign matter that is sucked in through the through hole 112 instead of the opening 111, the cover surface 127 of the drum casing 120 covers the outer edge of the rotor 110 and closes off the parts other than the slit 121. This allows foreign matter to be sucked in through the open surface 121a where the slit 121 of the drum casing 120 and the opening 111 of the rotor 110 overlap. Foreign matter is sucked into the rotor 110 through the open surface 121a formed in the slit 121 of the drum casing 120, and since the other opening 111 of the rotor 110 is closed by the cover surface 127 of the drum casing 120, the foreign matter is discharged through the through hole 112 of the rotor 110 without being scattered.

[0068] Furthermore, the suction force generated by the motor inside the vacuum cleaner body is transmitted to the head and acts on the slit 121. Since the drum casing 120 is closed by the cover surface 127, the suction force can be concentrated and act on the open surface 121a of the slit 121, allowing for powerful suction of foreign objects without any leakage of suction force. The suction force, which is stored without leakage, acts on the open surface 121a of the slit 121 and does not act on the closed surface 121b which is closed by the shut-off part 113 of the rotor 110. Therefore, since the powerful suction force is concentrated on a small area, the suction force is further enhanced, and foreign objects that do not easily lift off the floor surface can be sucked up with strong suction force.

[0069] Figure 5(a) is a perspective view showing the rotor of the vacuum cleaner head of the present invention coupled to the drum casing; Figure 5(b) is a bottom view showing the rotor coupled to the drum casing; and Figure 5(c) is a bottom view showing the rotor rotating in Figure 5(b) and the open surface moving horizontally.

[0070] As shown in Figures 5(a) to 5(c), the rotor 110 is inserted inside the drum casing 120.

[0071] The slit 121 formed on the bottom surface of the drum casing 120 is the part that comes into contact with the floor surface to be cleaned, and is open along the longitudinal direction of the overall axis with a certain width so that the inside and outside can communicate. In the embodiments of Figure 5(a) and Figure 5(b), the rotor 110 inserted inside has a spiral opening 111 on its outer circumference. While the rotor 110 is provided inside the drum casing 120, the slit 121 formed on the bottom surface of the drum casing 120 has a closed surface 121b where part is blocked by the blocking part 113 of the rotor 110, and an open surface 121a where the opening 111 of the rotor 110 and the slit 121 of the drum casing 120 overlap and are open. Foreign matter is sucked in from the open surface 121a of the slit 121, but not from the closed surface 121b where the slit 121 is blocked by the blocking part 113 of the rotor 110. The foreign object that is sucked in is discharged from the through-hole 112.

[0072] As the rotor 110 rotates inside the drum casing 120, the position of the open surface 121a, which is the surface where the slit 121 and the opening 111 overlap and open, is variable. When the rotor 110 stops rotating, the open surface 121a of the slit 121 is open so that the inside and outside are in communication, and the closed surface 121b is closed by the closing part 113 of the rotor 110. However, as the rotor 110 rotates, the positions of the open surface 121a and the closed surface 121b of the slit 121 move horizontally and vary, so foreign matter can be sucked in through the entire slit 121.

[0073] Since the blocking portion 113 formed on the outer edge of the rotor 110 closes a portion of the slit 121, the suction force generated by the motor and transmitted to the head acts on the open surface 121a where the slit 121 is opened by the opening 111. Therefore, the suction force is concentrated on the open surface 121a without being distributed over the entire area of ​​the opening 111 or the entire area of ​​the slit 121, resulting in a very large suction pressure.

[0074] The enhanced suction force acts only on the open surface 121a of the slit 121. The vacuum cleaner head of the present invention has a limited suction area relative to the entire area of ​​the slit 121, but by rotating the rotor 110 and rapidly moving the position of the open surface 121a horizontally, the enhanced suction force can be applied to the entire area of ​​the slit 121.

[0075] As the rotor 110 rotates, the open surface 121a of the slit 121 moves horizontally, as shown in Figures 1 and 5(c). The closed surface 121b is closed by the closing part 113, and the open surface 121a is opened by the opening 111. However, as the rotor 110 rotates, the positions of the open surface 121a and the closed surface 121b move variably, and the direction of this movement is horizontal. Since the open surface 121a of the slit 121 moves horizontally, the entire area of ​​the slit 121 can be opened.

[0076] Thus, the open surface 121a of the slit 121 is open at only a portion of its position at any given moment, but as the rotor 110 rotates rapidly, the entire slit 121 is opened.

[0077] By concentrating the suction force on the open surface 121a rather than applying it to the entire surface of the slit 121, sufficient force is generated to suck up heavy foreign objects that are difficult to suck up with conventional suction forces, as well as foreign objects that are stuck tightly to the floor surface, using a motor of the same capacity. Even if a foreign object is located at the position of the blocking surface 121b where the slit is blocked by the blocking part 113, the position of the open surface 121a changes rapidly in the horizontal direction, and the position of the blocking surface 121b soon moves to the open surface 121a, allowing the foreign object to be sucked up.

[0078] As shown in Figure 1, the vacuum cleaner head 100 moves back and forth vertically on the floor surface to be cleaned, while the open surface 121a of the slit 121 moves left and right horizontally in the width direction (axial direction) of the slit 121. Therefore, the direction of movement of the vacuum cleaner head 100 and the direction of movement of the open surface 121a of the slit 121 are orthogonal. Even if the vacuum cleaner head 100 is twisted from side to side while cleaning, the direction of movement of the open surface 121a changes accordingly, so they can always be orthogonal.

[0079] When cleaning, if the rotor 110 rotates at a speed sufficiently faster than the head's movement speed, the time between the opening and closing of the entire surface of the slit 121 is shortened, allowing for cleaning as if the entire slit 121 were open. Therefore, foreign matter distributed on the floor surface is prevented from being sucked in by the closing of the slit 121, and the rotor 110 opens the sealing surface 121b while rotating to suck in the foreign matter, thus improving cleaning efficiency.

[0080] When a constant power is supplied to generate suction force with a motor, the vacuum cleaner head according to the present invention amplifies the suction force and more effectively sucks up foreign objects. Therefore, while improving suction efficiency, the power supplied to the motor can be reduced, which in turn reduces the weight of the battery supplying the power, or extends the operating time of the vacuum cleaner. Furthermore, with wireless vacuum cleaners, the weight of the heavy battery causes users to feel fatigued and inconvenienced during long cleaning sessions, but the vacuum cleaner head of the present invention reduces the battery weight, allowing users to clean more conveniently.

[0081] In conventional vacuum cleaners, the motor is located on the top or rear of the dust collector. As cleaning progresses, if foreign matter accumulates in the dust collector above a certain level, it can build up in the filter that filters dust from the intake air, clogging the motor's intake port. As a result, the vacuum cleaner's suction power weakens, reducing cleaning efficiency.

[0082] Because battery-powered robotic vacuum cleaners need to clean in confined spaces, it is difficult to increase their size beyond a certain level. The batteries installed in robotic vacuum cleaners are also limited, restricting suction power and operating time. The vacuum cleaner head of the present invention is applicable to robotic vacuum cleaners. A robotic vacuum cleaner equipped with the head of the present invention can generate greater suction power even with limited battery capacity, increasing operating time. This overcomes the disadvantages of robotic vacuum cleaners—low suction power and short operating time—and improves cleaning efficiency.

[0083] A rotary motor 123 for driving the rotor 110 is mounted on the drum casing 120. The rotary motor 123 may be mounted on the outside of the drum casing 120 or on the inside of the drum casing, as shown in Figures 4(a) and 4(b). The through-hole 112 of the rotor 110 is inserted into the casing hole 122 of the drum casing 120 and protrudes to the outside. The rotational force of the rotary motor 123 may be transmitted by a power transmission means such as a timing belt 124 or a gear 126, and the rotation shaft of the rotary motor 123 and the through-hole 112 of the rotor 110 are coupled by the timing belt 124 or gear 126. Therefore, the rotor 110 can be driven by transmitting the rotational force of the rotary motor 123 to the through-hole 112. If the through-hole 112 protrudes inward or is flat, the drum casing 120 is further equipped with a shaft, which is inserted into the through-hole, and then the shaft is rotated to rotate the rotor. This is a simple modification depending on the shape of the through-hole 112, so a detailed explanation is omitted.

[0084] Foreign matter is discharged through the through-hole 112 of the rotor 110. The timing belt 124 or gear 126 is exposed to foreign matter, and a protective band 125 may be fitted to prevent foreign matter from getting stuck between the timing belt 124 or gear 126 or from being damaged by foreign matter. The protective band 125 is formed to cover the outer surface of the timing belt 124 or gear 126 and is coupled to the end of the drum casing 120. In addition, a barrier film 140 can prevent foreign matter from getting stuck on the inner surface of the timing belt 124 or gear 126.

[0085] The rotor 110 according to the present invention rotates when driving force is transmitted from the rotary motor 123. In this invention, the rotational speed of the rotor 110, which is rotated by the rotary motor 123, is much faster than the moving speed of the vacuum cleaner head, which is moved by the user, so the effects of the present invention can be achieved.

[0086] Figure 9(a) is a flowchart showing an automatic control method for the rotor rotation speed related to the vacuum cleaner head of the present invention, and Figure 9(b) is a flowchart showing a manual control method for the rotor rotation speed.

[0087] The rotational speed of the rotor 110 may be controlled by either an automatic control method that senses the movement speed of the vacuum cleaner head and automatically determines the rotational speed of the rotor 110 to achieve the optimal suction power, or a manual control method in which the user directly determines the speed.

[0088] The automatic control method, as shown in Figure 9(a), detects the speed at which the vacuum cleaner head moves, that is, the speed (and possibly direction) at which the user can move the vacuum cleaner head. In this case, already developed sensors such as infrared, laser, or acceleration sensors are used. A sensor (not shown) is attached to one side of the vacuum cleaner head, and a control unit (not shown), which receives speed information of the vacuum cleaner head from the sensor, appropriately adjusts the rotation speed of the rotary motor 123 to provide sufficient suction power. At this time, the actual speed of the rotor 110 can be detected, and the rotation speed of the rotary motor 123 can be reflected in the control.

[0089] The manual control system, as shown in Figure 9(b), includes a switch that adjusts the rotation speed of the rotary motor 123 using voltage, current, or pulses. When the user selects a switch, the rotary motor 123 is driven at the selected rotation speed. The switch can be any type that allows the user to directly determine the speed, such as a button type where the user directly presses each step, a touch type where the speed changes depending on the number of presses, or a slide type where the position is moved.

[0090] Figure 6 is a perspective view showing the roller neck of the vacuum cleaner head of the present invention, and Figure 7 is a side view showing the roller neck of the vacuum cleaner head of the present invention.

[0091] As shown in Figures 6 and 7, the roller neck 130 has circular fixing portions 135 formed at both ends for supporting the drum casing 120, and an exposed portion 136 between the fixing portions 135 is open so that the drum casing 120 can be exposed to the outside. The exposed portion 136 exposes the drum casing 120 that is inserted inside, and the slit 121, which is the bottom surface of the drum casing 120, is exposed to the outside. A hollow cylindrical suction pipe 134 is formed at the upper end to guide foreign matter to a dust collector.

[0092] A partition wall 131 is formed inside the roller neck 130, separating the upper and lower spaces. The drum casing 120 is positioned in the open lower space, coupled with the roller neck 130. The space formed in the upper section, separated from the space where the drum casing 120 is located by the partition wall 131, is formed as an upper passage 133 through which foreign matter is guided to the suction pipe 134.

[0093] Furthermore, as shown in Figure 1, the roller neck 130 may have side walls 150 attached to both sides, thereby sealing the side passage 132.

[0094] Figure 8(a) is a perspective view showing the rotor, drum casing, and roller neck of the vacuum cleaner head of the present invention coupled together, and Figure 8(b) is a perspective view showing the rotor, drum casing, roller neck, and shielding membrane coupled together.

[0095] As shown in Figure 8(a), the width of the roller neck 130 is a length that extends a certain distance from both ends of the drum casing 120. The roller neck 130 forms a space at both ends by the length of the extension. Part of the formed space is formed as a fixing part for supporting the drum casing 120, and part of it is formed as a side passage 132 for guiding foreign matter discharged from the through hole 112 to the upper passage 133.

[0096] As shown in Figure 8(b), a barrier membrane 140 is provided to prevent foreign matter that is sucked into the rotor 110 through the open surface 121a and discharged from the through hole 112 from getting stuck between the timing belt 124 or the gear 126. Foreign matter discharged from the through hole 112 of the rotor 110 is not sucked into the inner surface of the timing belt 124 or the gear 126 by the barrier membrane 140, but moves to the upper passage 133 through the side passages 132 formed at both ends of the roller neck 130. That is, the side passages 132 are formed by the fixed part of the roller neck 130, the barrier membrane 140, and the side walls 150, and guide the foreign matter to the upper passage 133.

[0097] The upper passage 133 is formed by the inner surface of the roller neck 130 and the partition wall 131, and receives foreign matter from the side passage 132 and guides it to the suction pipe 134 formed in the center.

[0098] The vacuum cleaner head according to the present invention will be described with reference to one embodiment.

[0099] When power is supplied to the motor and it is started, the fan attached to the motor generates an airflow force that attempts to send air to the outside of the vacuum cleaner. This airflow force is converted into a suction force inside the vacuum cleaner. The suction force generated by the motor is transmitted to the head via the connecting part, and in the head, it acts sequentially on the suction pipe 134, the upper passage 133, the side passage 132, the through hole 112, the inside of the rotor 110, and the open surface 121a of the slit 121. Foreign objects are sucked in through the open surface 121a.

[0100] Foreign matter first flows in through a slit 121 formed on the bottom surface of the drum casing 120, but is sucked in through the open surface 121a which overlaps with the opening 111 of the rotor 110. Suction is impossible at the closed surface 121b where the slit 121 is closed by the shut-off part 113 of the rotor 110. Therefore, the rotary motor 123 attached to the drum casing 120 rotates the rotor 110, and the position of the open surface 121a of the slit 121 can be varied, allowing it to be opened to the entire area. The position of the open surface 121a moves horizontally along the slit 121. Foreign matter located at the closed surface 121b of the slit 121 can also be sucked in as the slit 121 opens as the rotor 110 rotates. Foreign matter that is sucked in and inside the rotor 110 exits through the through hole 112. At this time, the through hole 112 may be formed at one end or both ends depending on the various embodiment. Foreign matter discharged from the through-hole 112 is sucked into the upper passage 133 via the side passage 132 and guided to the dust collector by the suction pipe 134 formed in the center of the upper passage 133. [Examples]

[0101] The vacuum cleaner head according to Embodiment 2 of the present invention will be described in detail below. The configuration described in Embodiment 1 will not be described in detail in Embodiment 2.

[0102] The vacuum cleaner head of the present invention according to Embodiment 2 of the present invention comprises a rotor 110 through an opening 111 having a spiral outer edge into which foreign matter is sucked; the rotor 110 is inserted into a hollow interior, and a slit 121 is provided on the bottom surface to allow foreign matter from the surface to be cleaned to flow in. In the axial direction Includes a drum casing 120 formed and having a cover surface 127 surrounding the rotor 110.

[0103] The vacuum cleaner head 100 according to Embodiment 2 of the present invention, like Embodiment 1, aims to improve cleaning efficiency by suction by reducing the suction area into which foreign matter is sucked in, thereby strengthening the suction force, and by making the suction area variable so that foreign matter can be sucked in over the entire area, while simultaneously simplifying the airflow due to the suction force in the head.

[0104] To achieve the objectives of the present invention, a rotor 110 having an opening 111 is provided and is inserted into the drum casing 120 having a slit 121 formed on its bottom surface.

[0105] The suction force generated by the motor is concentrated at the open surface 121a, which is the region where the opening 111 and the slit 121 overlap, allowing for strong suction of foreign matter. As the rotor 110 rotates, the open surface 121a changes within the slit 121, and the enhanced suction force acts on the entire surface of the slit 121, enabling cleaning of a wide area with strong suction power.

[0106] Unlike Embodiment 1, in which foreign matter flowing in from the open surface 121a moves to the dust collector via both ends of the rotor 110, in this embodiment, foreign matter moves to the upper surface of the drum casing 120 (opposite side of the slit 121) via the opening 111 of the rotor 110. For this reason, both ends of the rotor 110 are closed, and foreign matter that flows into the interior of the rotor 110 through the open surface 121a of the slit 121 and the opening 111 of the rotor 110 moves in and out of the inside and outside of the rotor 110 while being discharged again from the opening 111 of the rotor 110. The foreign matter discharged from the opening 111 of the rotor 110 is then discharged from the discharge hole 128 above the drum casing 120 surrounding the rotor 110 and moves to the dust collector (not shown).

[0107] Here, the discharge hole 128 may be a circular, elliptical, or polygonal hole, and may be formed individually or in multiple separate locations on the upper surface of the drum casing 120, or it may be formed on a continuous surface.

[0108] Foreign matter present on the surface to be cleaned is sucked in by the suction force of a motor (not shown) through the open surface 121a, which is the part where the slit 121 and the opening 111 overlap. The foreign matter that flows into the rotor 110 flows along the suction force and then exits through the discharge hole 128 formed in the drum casing 120 and moves to the dust collector.

[0109] Therefore, foreign matter flows into the opening 111 on the lower surface of the rotor 110 and exits through the opening 111 on the opposite side, which is the upper surface of the opening 111 into which it entered; in other words, it flows while penetrating the rotor 110.

[0110] In Example 2, the flow path of foreign matter is smaller compared to Example 1, which allows for improvements in inhalation time and inhalation efficiency.

[0111] As shown in Figures 11 to 13, the rotor 110 according to Embodiment 2 of the present invention is configured to concentrate the suction force on the open surface 121a by adjusting the opening area of ​​the slit 121 formed in the drum casing 120 to a small size, and is formed of a cylindrical body and is arranged horizontally.

[0112] Both ends of the rotor 110 are formed so that the rotating shaft protrudes and are closed, and an opening 111 into which foreign matter can enter and exit, and a blocking section 113 into which foreign matter cannot enter and exit are formed in the body. The opening 111 and the blocking section 113 that form the body of the rotor 110 may be hollow inside as shown in Figure 11, or as shown in Figures 12 and 13, the body surface 115 into which the inside of the blocking section 113 is filled may extend to the inside, and only the opening 111 may be open.

[0113] Foreign matter present on the surface to be cleaned may enter the rotor 110 through the opening 111 and then be discharged to the outside, but it is impossible for it to enter or exit through the blocking section 113.

[0114] The opening 111 and the blocking portion 113, which constitute the body of the rotor 110, are formed continuously, but may be arranged in a helical shape with a constant lead angle. Although the opening 111 and the blocking portion 113 of the rotor 110 are described as helical in shape, the present invention is also included in the concept of the present invention if the cylindrical rotor 110 rotates and at some instant, a portion of the opening 111 and the blocking portion 113 are simultaneously exposed in the slit 121, and their positions are variable by rotation, even if they are not helical.

[0115] In Embodiment 2, the opening 111 of the rotor 110 is configured to simultaneously draw foreign matter into the interior and discharge it to the outside. The blocking section 113 is configured to close off a portion of the area of ​​the slit 121, thereby reducing the area of ​​the slit 121 and concentrating the suction force generated by the motor only on the open surface 121a.

[0116] In Embodiment 2 of the present invention, the blocking portion 113 of the rotor 110 may extend into the interior of the rotor 110 and be filled to the center. In this shape, the opening 111 is a hollow surface 114 that is continuously open to the interior, and the blocking portion 113 is a body surface 115 that is filled to the interior. Foreign matter that flows into the interior of the rotor 110 through the opening 111 moves to the hollow surface 114 with the body surface 115 of the blocking portion 113 as the boundary, minimizing the flow path and preventing it from remaining inside the rotor 110. In this case, the body surface 115 is not completely filled to the center of the rotor 110, and an interface surface (surface) can be formed by the body surface 115 at the edge of the hollow surface 114, including a state in which the center is partially excluded. In the present invention, the body surface 115 that is filled to the interior of the rotor 110 includes such shapes.

[0117] When the blocking portion 113 is filled into the interior of the rotor 110 and the body surface 115 is formed, the cross-section of the body surface 115 may be a square cross-section as shown in Figure 12, or a triangular or semicircular (not shown) cross-section as shown in Figure 13. The cross-section of the blocking portion 113 is not limited to these, and the present invention is included in any configuration that forms a flow path through which foreign matter flows in from the opening 111 on one side, penetrates the hollow surface 114 between the body surfaces 115, and is discharged from the opening 111 on the other side.

[0118] Long foreign objects, such as hair, do not get stuck inside the rotor 110, but are guided by the body surface 115 inside the shut-off section 113 to the discharge opening 111 via the shortest distance and discharged. Thus, the body surface 115 of the shut-off section 113 provides smooth intake and discharge performance for foreign objects. In addition, since the body surface 115 of the shut-off section 113 prevents foreign objects from remaining inside the rotor 110, the noise generated by the rotation of the foreign objects that remain inside can be reduced.

[0119] As shown in Figures 14 and 15, the drum casing 120 according to Embodiment 2 of the present invention is configured to house the rotor 110 inside and is formed of a hollow tube, with casing holes 122 formed at both ends to support both ends of the rotor 110.

[0120] The casing holes 122 support both ends of the rotor 110 and have a shape corresponding to the shape of both ends of the rotor 110, into which the protruding ends of the rotor 110 are inserted.

[0121] Figure 14(a) shows a configuration in which the rotary motor 123 rotates the rotor 110 via the gear 126, and Figure 14(b) shows a configuration in which the rotary motor 123 rotates the rotor 110 via the timing belt 124. This was explained in Example 1, so a detailed explanation will be omitted.

[0122] A discharge hole 128 is formed on the upper surface of the drum casing 120. Foreign matter that flows into the interior through the slit 121 is discharged through the discharge hole 128 and moved to the dust collector.

[0123] The shape of the discharge hole 128 may be elongated in the axial direction of the drum casing 120, but is not limited to this; any shape that allows foreign matter to escape to the outside of the drum casing 120 is sufficient.

[0124] The outer periphery, excluding the slit 121 and the discharge hole 128, is formed as a cover surface 127 surrounding the rotor 110. The cover surface 127 is configured to block the entry and exit of foreign matter on the surface of the drum casing 120 excluding the slit 121 and the discharge hole 128.

[0125] Since the cover surface 127 surrounds the outer edge of the rotor 110, the suction force is applied to the slit 121, and foreign matter can only be drawn into the interior in the overlapping portion of the slit 121 and the opening 111.

[0126] Referring to Figure 15, when the rotor 110 is inserted into the drum casing 120, the slit 121 that contacts the surface to be cleaned simultaneously exposes the opening 111 and the blocking portion 113 of the rotor 110 to the outside. The suction pressure generated by the motor is transmitted through the discharge hole 128 to the inside of the drum casing 120 and rotor 110, forming an airflow from the outside to the inside of the vacuum cleaner head 100.

[0127] The slit 121 is opened only by the opening 111 of the rotor 110 and closed at the blocking section 113, so the motor's intake pressure does not act on the blocking surface 121b but only on the open surface 121a. Since the intake force does not act on the entire area of ​​the slit 121 but is concentrated on the open surface 121a, the intake force can be strengthened.

[0128] Foreign matter that flows into the rotor 110 from the open surface 121a rises to the top of the vacuum cleaner head 100 along with the airflow caused by the suction force, passes through the opening 111, and is discharged from the discharge hole 128. The foreign matter discharged from the discharge hole 128 moves to the dust collector.

[0129] As the rotor 110 rotates inside the drum casing 120, the opening 111 and the blocking section 113 also rotate together, causing the positions of the opening 111 and the blocking section 113 exposed through the slit 121 to be variable.

[0130] At any given moment, a portion of the slit 121 becomes an open surface 121a, allowing foreign matter to be drawn in. However, as the rotor 110 rotates, the position that was an open surface 121a changes to a closed surface 121b, and the portion of the slit 121 that was a closed surface 121b changes back to an open surface 121a, allowing foreign matter to be drawn in.

[0131] As the open surface 121a changes along the slit 121, it becomes possible to suction foreign matter across the entire surface area of ​​the slit 121.

[0132] As shown in Figure 16, the roller neck 130 according to Embodiment 2 is configured to support the drum casing 120, with fixing portions 135 formed at both ends into which the drum casing 120 is inserted, and an exposed portion 136 between the fixing portions 135 is open so that the drum casing 120 can be exposed to the outside. The exposed portion 136 allows the slit 121 of the drum casing 120 to come into contact with the surface to be cleaned.

[0133] An intake pipe 134 is formed at the top of the roller neck 130 to guide foreign matter that has escaped from the rotor 110 and drum casing 120 to move to the dust collector.

[0134] The roller neck 130 according to Embodiment 2 of the present invention supports the drum casing 120 and forms its outer shape. However, the roller neck 130 in Embodiment 2 is a configuration that can be selectively adopted, and the drum casing 120 may be made to form its outer shape, and the structure and shape may be sufficiently modified so that the discharge hole 128 is formed by a pipe and can be guided to a dust collector, so that the drum casing 120 also performs the function of the roller neck 130.

[0135] The operation of the vacuum cleaner head 100 according to Embodiment 2 of the present invention will be described.

[0136] When power is supplied to the motor and it is started, the motor generates suction pressure, and foreign matter is moved to the dust collector sequentially through the open surface 121a, the inside of the rotor 110, the discharge hole 128, and the suction pipe 134.

[0137] Foreign matter present on the surface to be cleaned passes through the slit 121 but is not sucked into the blocking surface 121b which is blocked by the blocking section 113. Instead, it flows into the interior of the rotor 110 through the open surface 121a, which is the area where the opening 111 and the slit 121 overlap. The foreign matter that has flowed into the interior of the rotor 110 passes through the hollow surface 114 between the body surfaces 115 and moves through the opening 111 to the space between the rotor and the drum casing 120. After that, it is guided through the discharge hole 128 to the suction pipe 134 and then to the dust collector. [Explanation of Symbols]

[0138] 100: Vacuum cleaner head 110: Rotor 111: Opening 112: Through Hole 113: Blocking section 114:Hollow surface 115: Body surface 120: Drum casing 121: Slit 121a: Open surface 121b: Shielding surface 122: Casing Hole 123: Rotating motor 124: Timing belt 125: Protective band 126: Gear 127: Cover surface 128: Discharge Hole 130: Roller neck 131: Bulkhead 132: Side passage 133: Upper aisle 134:Suction pipe 135:Fixed part 136:Exposed part 150: Side wall

Claims

1. A rotor (110) through which foreign matter is sucked in via an opening (111) having a spiral outer edge; The drum casing (120) includes a hollow interior into which the rotor (110) is inserted, a slit (121) formed axially on the bottom surface that is open to allow foreign matter from the surface to be cleaned to flow in, and a cover surface (127) that surrounds the rotor (110); The slit (121) has an open surface (121a) into which foreign matter flows through the opening (111) of the rotor (110), and a blocking surface (121b) formed by a blocking portion (113) that blocks the inflow of foreign matter, and the open surface (121a) and the blocking surface (121b) are simultaneously arranged in the axial direction. The open surface (121a) of the slit (121) is variable in the axial direction by the rotating rotor (110), in the vacuum cleaner head.

2. The vacuum cleaner head according to claim 1, wherein the rotor (110) is formed with an opening (111) into which foreign matter is sucked in and a blocking portion (113) into which foreign matter is blocked, and the opening (111) is formed continuously.

3. The upper part of the drum casing (120) is The vacuum cleaner head according to claim 1, wherein a discharge hole (128) is formed for foreign matter that flows in from the open surface (121a) of the rotor (110) through which the opening (111) and slit (121) are simultaneously formed, and the discharge hole (128) is discharged.

4. The vacuum cleaner head according to claim 1, wherein the open surface (121a) exposed to the slit (121) by the rotation of the rotor (110) moves horizontally and is perpendicular to the direction of movement of the head.

5. The vacuum cleaner head according to claim 1, further comprising: a roller neck (130) into which the drum casing (120) is inserted, and into which foreign matter flowing in from an open surface (121a) in which an opening (111) and a slit (121) of the rotor (110) are simultaneously formed is guided through the drum casing (120) to an intake pipe (134);

6. The vacuum cleaner head according to claim 5, wherein the roller neck (130) is formed to be longer than the drum casing (120) and includes a side passage (132) through which foreign matter passes.

7. The vacuum cleaner head according to claim 1, wherein the rotor (110) has a hollow interior and foreign matter moves into through holes (112) formed on its side.

8. In the rotor (110), The blocking portion (113) that blocks foreign matter has a body surface (115) that is solid inside. The vacuum cleaner head according to claim 1, wherein foreign matter that flows in passes through the open surface (121a), passes between the body surfaces (115), and penetrates the opening (111) on the opposite side of the center.

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