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, 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 a certain 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. [Background technology]

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

[0003] A conventional vacuum cleaner used to clean floors in homes, offices, or shops is composed of a head unit that sucks in foreign objects, a motor that generates a suction force, a dust collector that collects dust and dirt in one place, and a connector that connects the head unit and the dust collector.

[0004] The head parts that can be interchangeably attached to the suction port of the vacuum cleaner are equipped with a general head that can easily clean a wide area, a gap head that can clean narrow gaps such as those in window frames and door frames, and a brush head that is suitable for various usage environments such as the gaps between the top of a dresser and furniture.

[0005] A standard head with a long width has the advantage of being able to clean a large area easily. Therefore, standard heads are used when cleaning large floor surfaces such as living rooms, back rooms, and concert halls. However, the suction power generated by the motor is distributed over a wide area of ​​the standard head, so the suction power is not enough to suck up dust and heavy foreign objects stuck on the floor, resulting in reduced cleaning effectiveness.

[0006] Gap heads, which can easily clean gaps in window frames and furniture, have a smaller suction port area than regular heads. The advantage is that the suction force generated by the motor is concentrated in a small area, resulting in higher suction power. However, when cleaning a large space with a narrow gap head, the user must move the suction port of the vacuum cleaner more than with a regular head, and the weight of the vacuum cleaner can cause fatigue and discomfort to the body, such as the arms and waist, when cleaning for a long time.

[0007] In terms of the air flow inside the vacuum cleaner, in conventional vacuum cleaners, foreign objects reach the dust collector via the vacuum cleaner head and the connection part, and the dust in the air is removed by a filter installed in the dust collector. The motor that sucks in the air is located at the rear of the dust collector. Therefore, foreign objects such as dust and hair accumulate in the filter inside the dust collector while cleaning, clogging the suction hole of the motor and causing a decrease in the suction power of the vacuum cleaner. If the rotation speed of the motor is increased to raise the reduced suction power to a certain level, the power consumption of the vacuum cleaner increases and a loud noise is generated.

[0008] For this reason, in wireless vacuum cleaners and robot vacuum cleaners that use batteries to drive motors, the battery capacity must be increased to match the increased power consumption. Wireless vacuum cleaners, which are used for easy cleaning, have the disadvantage that the heavy battery weight causes inconvenience to users and the increased power consumption shortens the usage time, requiring frequent charging.

[0009] Therefore, there is a need for the development of a vacuum cleaner head that can remove dust and foreign matter from large floor surfaces with strong suction power, yet maintain a constant suction power and reduce power consumption without putting strain on the body even when cleaning for long periods of time. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Korean Registered Utility Model No. 20-0243532 [Patent Document 2] Korean Patent Publication No. 10-2020-0117358 Summary of the Invention [Problem to be solved by the invention]

[0011] In order to solve the above problems, the present invention provides a vacuum cleaner head in which a slit for sucking in foreign objects is formed on the bottom surface of a drum casing, a rotor having an opening and a blocking portion is inserted into the drum casing, and part of the area of ​​the slit is closed by the blocking portion, thereby preventing the suction force generated by the motor from being dispersed 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 in foreign objects with a strong suction force.

[0012] Another object of the present invention is to provide a vacuum cleaner head that can clean a large area with a strong suction force even when using a small-sized motor when cleaning a large floor surface such as a living room, by changing the open surface where the spiral opening and the slit overlap to cover the entire area of ​​the slit as the rotor rotates due to the rotation of the rotary motor.

[0013] Another object of the present invention is to provide a vacuum cleaner head that can clean a wide area by restricting suction to only the floor surface on which foreign objects are present and changing the position of the rotor opening while restricting concentrated suction to the point where the open slit of the drum casing and the rotor opening meet at the same time on the floor surface.

[0014] Another object of the present invention is to provide a vacuum cleaner head which minimizes the hollow space inside the rotor by forming a body surface so that the blocking part of the rotor is filled to the center inside, and foreign matter that enters the inside of the rotor through the open side does not remain inside the rotor but is guided by the blocking part to the opening on the opposite side in the shortest possible distance, thereby preventing clogging of the inside of the rotor with foreign matter, increasing suction efficiency and reducing noise.

[0015] Another object 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 motor with a small capacity, thereby reducing noise and power requirements. [Means for solving the problem]

[0016] In order to achieve the above object, the present invention provides a rotor (110) into which foreign matter is sucked through an opening (111) having a spiral outer periphery; and a hollow interior into which the rotor (110) is inserted and a slit (121) at the bottom that is open so that foreign matter from a surface to be cleaned can flow in. Axial The slit (121) exposes an open surface (121a) formed by the opening (111) of the rotor (110) and a blocking surface (121b) formed by a blocking portion (113) that blocks foreign matter, and the open surface (121a) and the blocking surface (121b) are Axial The open surface (121a) of the slit (121) is rotated by the rotor (110). Axial Variable.

[0017] In addition, the rotor (110) of the present invention is formed such that the openings (111) through which foreign matter is sucked and the blocking portions (113) through which foreign matter is blocked are intersecting with each other, and the openings (111) are formed continuously.

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

[0019] In addition, a discharge hole (128) is formed at the top of the drum casing (120) of the present invention, through which foreign matter entering through an open surface (121a) where the opening (111) of the rotor (110) and the slit (121) are simultaneously formed is discharged.

[0020] In addition, the open surface (121a) exposed to the slit (121) by the rotation of the rotor (110) of the present invention moves horizontally and is perpendicular 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 through which foreign matter flowing in from an open surface (121a) where the opening (111) of the rotor (110) and the slit (121) are simultaneously formed is guided to an intake pipe (134) via the drum casing (120).

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

[0023] In addition, the rotor (110) of the present invention has a hollow interior, and foreign matter moves into a through hole (112) formed in the side surface.

[0024] In addition, in the rotor (110) of the present invention, the blocking portion (113) that blocks foreign matter is formed with a body surface (115) that is filled inside, and 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 surface of the center. Effect of the Invention

[0025] The vacuum cleaner head according to the present invention has a slit formed in the bottom surface of a drum casing through which foreign objects are sucked in, and a rotor having an opening and a blocking portion is inserted into the drum casing, and part of the area of ​​the slit is blocked by the blocking portion. This prevents the suction force generated by the motor from being dispersed over the entire area of ​​the slit, and instead concentrates the suction force at the open surface where the slit and the opening overlap, providing an advantage in that foreign objects can be sucked in with a strong suction force.

[0026] In addition, the present invention has an advantage that, as the rotor rotates due to the rotary motor, the open surface where the spiral opening and the slit overlap can be changed to cover the entire area of ​​the slit, so that when cleaning a large floor surface such as a living room, a large area can be cleaned with a strong suction force even using a small-sized motor.

[0027] In addition, the present invention has the advantage that it can clean a wide area by restricting the suction to only the floor surface where foreign objects are present, and by changing the position of the rotor opening while restricting the suction to the point where the open slit of the drum casing and the rotor opening meet at the same time on the floor surface.

[0028] In addition, the present invention minimizes the hollow space inside the rotor by forming the body surface so that the blocking part of the rotor is filled to the center inside, and foreign matter that enters the inside of the rotor through the open side does not remain inside the rotor but is guided by the blocking part to the opening on the opposite side in the shortest distance, so there is no clogging of the inside of the rotor, suction efficiency is increased, and noise is suppressed.

[0029] Furthermore, the present invention provides a large suction force with the same rotational force, and allows the use of a motor with a small capacity, which has the advantages of reducing noise and power requirements. [Brief description of the drawings]

[0030] [Figure 1] FIG. 1 is a perspective view showing a vacuum cleaner head according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a rotor in which a spiral opening rotates in one direction according to the vacuum cleaner head of the first embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view of a rotor with symmetrically rotated spiral openings according to the vacuum cleaner head of the first embodiment of the present invention. [Figure 4] 1A and 1B are perspective views showing the slits in the drum casing of the vacuum cleaner head of the first embodiment of the present invention, where (a) shows how the rotary motor is connected to the timing belt, and (b) shows how the rotary motor is connected to the gear. [Diagram 5] 5(a) is an oblique view showing how the rotor of the vacuum cleaner head of Example 1 of the present invention is connected to the drum casing, (b) is a bottom view showing how the rotor is connected to the drum casing, and (c) is a bottom view showing how the rotor rotates in (b) of Figure 5 and the open surface moves horizontally. [Figure 6] FIG. 2 is a perspective view showing a roller neck of the vacuum cleaner head according to the first embodiment of the present invention. [Figure 7] FIG. 2 is a side view showing a roller neck of the vacuum cleaner head according to the first embodiment of the present invention. [Figure 8] FIG. 1(a) is a perspective view showing the rotor, drum casing, and roller neck of the vacuum cleaner head of the first embodiment of the present invention when they are combined together, and FIG. 1(b) is a perspective view showing the rotor, drum casing, roller neck, and barrier film when they are combined together. [Figure 9] 1(a) is a flow chart showing an automatic control method for the rotor rotation speed of the vacuum cleaner head of Example 1 of the present invention, and FIG. 1(b) is a flow chart showing a manual control method for the rotor rotation speed. [Figure 10] FIG. 2 is a state diagram showing a state in which a rotor and a drum casing according to the vacuum cleaner head of the first embodiment of the present invention are coupled together. [Figure 11] FIG. 11 is a perspective view showing a rotor in a vacuum cleaner head according to a second embodiment of the present invention. [Figure 12] FIG. 2 shows an embodiment in which the body surface of the rotor blocking part of the vacuum cleaner head according to the present invention has a square cross-section, where (a) is an oblique view of a part of the body surface with a cut-out, and (b) is a front view of a part of the body surface with a cut-out. [Figure 13] FIG. 2 shows an embodiment in which the body surface of the rotor blocking part of the vacuum cleaner head according to the present invention has a triangular cross-section, where (a) is an oblique view of a part of the body surface with a cut-out, and (b) is a front view of a part of the body surface with a cut-out. [Figure 14]11A and 11B are diagrams showing a drum casing for a vacuum cleaner head according to a second embodiment of the present invention, in which (a) is a perspective view showing a configuration for transmitting rotation to a rotor via a gear, and (b) is a perspective view showing a configuration for transmitting rotation to a rotor via a timing belt. [Figure 15] FIG. 10 is a perspective view showing a suction flow in a state where a rotor and a drum casing according to a vacuum cleaner head of a second embodiment of the present invention are coupled together. [Figure 16] FIG. 11 is a perspective view showing a roller neck of a vacuum cleaner head according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. EXAMPLES

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

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

[0034] The drum casing 120 is inserted into the roller neck 130, and foreign matter entering through an open surface 121a where the opening 111 of the rotor 110 and the slit 121 are formed at the same time is guided to an intake pipe 134 via the drum casing 120.

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

[0036] During cleaning, the head is moved vertically back and forth by the user while in contact with the floor surface to be cleaned, and the suction force generated by a motor (not shown) spaced apart from the suction pipe 134 is transmitted to the head, sucking foreign objects into the head. Foreign objects are sucked into the head by the suction force acting on the head, and reach the dust collector through the connection part along with the air flow.

[0037] The head may be provided in various shapes depending on the environment to be cleaned and the purpose of use, including a wide-shaped general head for easily cleaning a wide floor surface, a gap head for sucking up foreign matter accumulated in the gaps of doors or furniture, a brush head with a brush formed thereon for scattering and sucking up accumulated dust, etc. In the present invention, a wide-shaped general head for easily cleaning a wide floor surface will be described as an example, but the present invention is not limited thereto and various modifications can be made within the scope of the same technical concept.

[0038] The vacuum cleaner head 100 of the present invention is detachably connected to a connection part that communicates the head part with the dust collector, and is replaceable. Therefore, when dust accumulates and needs to be cleaned, the head can be separated and cleaned, and when it is damaged and loses its suction function, it can be replaced with another head. The structure 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 structure, so a description thereof will be omitted.

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

[0040] 2 and 3, the rotor 110 is formed as a hollow cylinder, and has through holes 112 formed in the axial direction (longitudinal direction) at both ends, and a certain area of ​​the outer periphery is formed with an opening 111 that allows the inside and outside of the rotor 110 to communicate, and a certain area is formed with a blocking part 113 that is closed. The opening 111 through which foreign matter is sucked and the blocking part 113 that blocks foreign matter are formed to intersect, and the opening 111 is formed continuously.

[0041] Here, as shown in FIG. 2, the through hole 112 may be formed to protrude outward in the axial direction and inserted and supported in a casing hole 122 of the drum casing 120. The through hole 112 may be formed to have a flat shape (not shown) that does not protrude outward, or to protrude inward (not shown). When the through hole 112 is flat or protrudes inward, a shaft (not shown) protrudes from the drum casing 120 and is inserted into the through hole 112. A typical engineer can easily change the shape of the through hole 112, such as protruding outward, protruding inward, or formed flat, and the embodiment in which the through hole 112 protrudes outward will be illustrated and described here. The present invention may include a shape in which the through hole 112 protrudes inward or outward, and a shape in which the through hole 112 does not protrude inward or outward, and the configuration for rotating the rotor 110 can be easily changed by adding a shaft to the drum casing 120 according to the change in the shape of the through hole 112, so a description thereof will be omitted.

[0042] Also, the diameter of the through hole 112 is preferably smaller than the diameter of the hollow portion of the rotor 110, but is not limited thereto, and may be the same as or larger than the diameter of the hollow portion.

[0043] In the present 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 opening shape in one direction throughout the rotor 110, while the spiral shape in Figure 3 is a symmetrical V shape that continues in both directions around the center of the rotor 110.

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

[0045] The rotor 110 is located inside the hollow of the drum casing 120 and coupled to be rotatable. That is, a cover surface 127 of the drum casing 120 covers a blocking portion 113 of the rotor 110. In order to prevent the blocking portion 113 of the rotor 110 and the cover surface 127 of the drum casing 120 from coming into contact with each other and causing friction to generate rotation resistance, the outer diameter of the rotor 110 is formed smaller than the inner diameter of the drum casing 120.

[0046] 10(a) and (b), the cover surface 127 of the drum casing 120 (here, the cover surface 127 except for the position where the slit 121 is formed) has a small gap with the outer circumferential 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 set to be equal to or smaller than the distance b between the cover surface 127 and the rotor 110.

[0047] Foreign matter outside the drum casing 120 passes through the slits 121 and is sucked into the rotor 110 via the opening 111, as shown in Figures 10(a) and 10(b). An air flow is formed toward the inside of the rotor 110, and the foreign matter moves along with the formed air flow.

[0048] An opening 111 and a blocking portion 113 are formed on the outer peripheral edge of rotor 110, and as long as cylindrical rotor 110 rotates and at any moment opening 111 and blocking portion 113 are partially exposed in slit 121, various modifications are possible without being limited to the shape shown in Figures 2 and 3.

[0049] 2, the openings 111 of the rotor 110 may be formed in a unidirectional spiral shape having a constant lead angle along the outer periphery of the rotor 110. Between the openings 111, a blocking portion 113 is formed. A part of the rotating rotor 110 that contacts the floor surface is exposed to foreign matter through the opened slits 121 of the drum casing 120. At this time, the opening 111 and the blocking part 113 must be exposed by the slits 121 at the same time. That is, if only the opening 111 is exposed by the slits 121, the suction force is dispersed throughout the slits 121, making it difficult to generate a large suction force, so the opening 111 must not be entirely exposed by the slits 121 at any moment. Also, to prevent strain on the motor, the blocking part 113 must not be entirely exposed by the slits 121 at any moment. The opening 111 and the blocking part 113 must always coexist in the slits 121.

[0050] 3, the opening 111 of the rotor 110 is formed in a spiral shape along the outer periphery of the rotor 110, but may be formed in a symmetrical shape in the left and right directions around the center of the rotor 110. The structure, function, and coupling relationship are the same as those of the rotor having the unidirectional opening 111 shown in FIG.

[0051] In this rotor 110, the openings 111 and the blocking portion 113 are formed continuously, so that the openings 111 and the blocking portion 113 are simultaneously formed over the entire axial surface at all moments in the rotating rotor 110. Therefore, the openings 111 are formed on the side of the blocking portion 113, and the blocking portion 113 is formed on the side of the openings 111.

[0052] As rotor 110 rotates, opening 111 and blocking portion 113 are simultaneously exposed to slit 121 on the bottom surface (floor surface), so that the suction force is blocked at blocking portion 113 and the suction force of the motor is concentrated at opening 111. Since opening 111 exposed to slit 121 is smaller than slit 121, the suction force is not distributed across slit 121 but is concentrated at open opening 111, so that the suction force becomes very large when a motor of the same capacity is used.

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

[0054] Foreign objects (objects to be cleaned) are sucked into the hollow interior of the rotor 110 through the opening 111 formed in a spiral shape, and are discharged from the through hole 112 formed at the end of the rotor 110. The through hole 112 is an extension of the hollow and has an open interior, allowing the sucked foreign objects to move. At this time, the suction force generated by the motor of the main body 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 on the opening 111 of the rotor 110 through the through hole 112, so that the foreign objects can be sucked into the rotor 110.

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

[0056] As shown in Fig. 4, the drum casing 120 is formed of a hollow tube, and has casing holes 122 at both ends to support the through holes 112, and a slit 121 formed at the bottom to form an open passage leading to the hollow interior of the rotor 110. A cover surface 127 consisting of the portion other than the slit 121 is formed at the outer periphery of the drum casing 120. As described above, if the through holes 112 formed in the rotor 110 are formed only at one end rather than at both ends, the casing hole 122 may also be formed only at one end of the drum casing 120. In addition, the through holes 112 may protrude outside the casing hole 122 and be rotated by a rotary motor 123 described later.

[0057] The drum casing 120 is hollow, and the rotor 110 is inserted therein to rotate. In this case, the drum casing 120 and the rotor 110 may be spaced apart such that a constant gap b is formed between the cover surface 127 and the outer periphery of the rotor 110 as a whole, as shown in Fig. 10(a), or the gap between the cover surface 127 and the outer periphery of the rotor 110 may be non-constant, as shown in Fig. 10(b). When the gap between the cover surface 127 and the outer periphery of the rotor 110 is non-constant, the gap between the rotor 110 and the inner wall surface of the slit 121 is smallest, and there are large gaps at other positions.

[0058] The casing hole 122 must have a shape capable of supporting the through hole 112 of the rotor 110. That is, the through hole 112 may be formed to protrude outward and inserted into the casing hole 122, the through hole 112 may be formed to have a flat shape (not shown) that does not protrude outward, or may be formed to protrude inward (not shown) and the casing hole may protrude in a shaft shape and be inserted into the through hole 112. As described above, the shape of the through hole 112 can be easily changed by ordinary engineers, and therefore the shape of the casing hole 122 supporting 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 is illustrated and described.

[0059] FIG. 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 connected, and FIG. 10(b) is a cross-sectional view showing the suction flow when the rotor and drum casing are eccentrically connected.

[0060] 10(a) and 10(b), the rotor 110 is located inside the drum casing 120, and foreign matter is sucked into the opening 111 of the rotor 110 inside through the slit 121 on the bottom surface of the drum casing 120 on the outside. That is, the cover surface 127 of the drum casing 120 surrounds the outside of the rotor 110, and the rotor 110 cannot communicate with the outside inside the cover surface 127 except for the slit 121, and foreign matter can be sucked into the inside through the opening 111 of the rotor 110 through 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 into the inside through the opening 111 of the rotor 110.

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

[0062] At this time, the cover surface 127 of the drum casing 120 is disposed very close to the outer periphery of the rotor 110 as shown in Fig. 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 equal to the distance b between the cover surface 127 and the rotor 110. Even if there is a gap between the cover surface 127 and the rotor 110, the opening 111 of the rotor 110 is surrounded by the cover surface 127, so that foreign matter cannot be sucked in through the opening 111 blocked by the cover surface 127, and can be sucked into the inside of the rotor 110 through the open surface 121a of the slit 121.

[0063] If the foreign object sucked into the opening 111 of the rotor is too long to be sucked into the open surface 121a of the slit 121, the foreign object is sucked into the opening 111 while passing through the cover surface 127 that has left the slit 121, or while passing through the cover surface 127 and moving back to the position of the slit 121. At this time, if the gap between the rotor 110 and the cover surface 127 is very narrow like the gap between the inner wall surface of the slit 121 and the rotor 110 (FIG. 10(a)), the foreign object on the inner wall surface may adhere from the opening 111 to the blocking portion 113, hindering the sucking of the foreign object or the rotation of the rotor 110. In such a case, it is preferable to make the gap b between the rotor 110 and the cover surface 127 larger than the gap a between the inner wall surface of the slit 121 and the rotor, as shown in FIG. 10(b).

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

[0065] Cover surface 127 surrounds opening 111 and blocking portion 113 that form the outer periphery of rotor 110, and opening 111 that is covered by cover surface 127 does not generate a suction force toward the outside of cover surface 127. Therefore, slit 121 can act in a concentrated manner on open surface 121a that is opened by opening 111, so that the suction force can be strengthened.

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

[0067] The openings 111 of the rotor 110 are formed along the outer periphery and are entirely open in the longitudinal direction (axial direction), so that foreign matter that has been sucked in through the slits 121 and entered the inside of the rotor 110 is prevented from being discharged to the openings 111 of the rotor 110 in other directions, and the foreign matter that has been sucked in is discharged through the through holes 112 instead of the openings 111, so that the cover surface 127 of the drum casing 120 covers the outer periphery of the rotor 110 and closes the parts other than the slits 121. Then, the foreign matter is sucked in from the open surface 121a where the slits 121 of the drum casing 120 and the openings 111 of the rotor 110 overlap. The 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 openings 111 of the rotor 110 are blocked 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] In addition, the suction force generated by the motor inside the vacuum cleaner body is transmitted to the head and acts on the slits 121. Because the drum casing 120 is closed by the cover surface 127, the suction force can be concentrated on the open surface 121a of the slits 121, and foreign objects can be powerfully sucked in without any leakage of suction force. The suction force stored without leakage acts on the open surface 121a of the slits 121, and does not act on the blocking surface 121b blocked by the blocking part 113 of the rotor 110. Therefore, because the strong suction force is concentrated on a small area, the suction force is further strengthened, and foreign objects that do not easily come off the floor surface can be sucked in with a strong suction force.

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

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

[0071] The slit 121 formed on the bottom surface of the drum casing 120 is a portion that comes into contact with the floor surface to be cleaned, and is open along the longitudinal direction of the entire axis with a certain width so that the inside and outside can communicate with each other. In the embodiment of FIG. 5(a) and FIG. 5(b), the rotor 110 inserted inside has a spiral opening 111 on the outer periphery. While the rotor 110 is installed inside the drum casing 120, the slit 121 formed on the bottom surface of the drum casing 120 has a blocking surface 121b that is partially blocked by the blocking portion 113 of the rotor 110, and an open surface 121a that is opened when the opening 111 of the rotor 110 and the slit 121 of the drum casing 120 overlap each other. Foreign matter is sucked in from the open surface 121a of the slit 121, and is not sucked in from the blocking surface 121b where the slit 121 is blocked by the blocking portion 113 of the rotor 110. The sucked foreign matter is discharged from the through hole 112.

[0072] The rotor 110 rotates inside the drum casing 120, and the position of the open surface 121a, which is the surface where the slit 121 and the opening 111 overlap and are opened, changes. When the rotor 110 stops rotating, the open surface 121a of the slit 121 is open so that the inside and the outside communicate with each other, and the blocking surface 121b is blocked by the blocking part 113 of the rotor 110. However, as the rotor 110 rotates, the positions of the open surface 121a and the blocking surface 121b of the slit 121 move horizontally and change, so that foreign matter can be sucked in through the entire slit 121.

[0073] Since blocking portion 113 formed on the outer periphery of rotor 110 closes a portion of slit 121, the suction force generated by the motor and transmitted to the head acts on open surface 121a where slit 121 is opened by opening 111. Therefore, the suction force is concentrated on open surface 121a without being distributed over the entire area of ​​opening 111 or 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 to quickly move the position of the open surface 121a horizontally and vary it, 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 Fig. 1 and Fig. 5(c). The blocking surface 121b is blocked by the blocking portion 113, and the open surface 121a is opened by the opening 111, but as the rotor 110 rotates, the positions of the open surface 121a and the blocking surface 121b change and move in a horizontal direction. Since the open surface 121a of the slit 121 moves horizontally, the entire area of ​​the slit 121 can be opened.

[0076] In this way, the open surface 121a of the slit 121 is only partially open at any one moment, but as the rotor 110 rotates faster, the slit 121 is entirely opened.

[0077] By concentrating the suction force on the open surface 121a rather than on the entire area of ​​the slit 121, a sufficient force is generated to suck up heavy foreign objects that are difficult to suck up with conventional suction forces, or foreign objects that are tightly attached to the floor, with the same capacity motor. Even if the foreign object is at the position of blocking surface 121b where the slit is blocked by blocking portion 113, the position of open surface 121a quickly changes in the horizontal direction, and the position of blocking surface 121b soon reaches open surface 121a, allowing the foreign object to be sucked in.

[0078] 1, the vacuum cleaner head 100 moves back and forth in a vertical direction on the floor surface to be cleaned, and the open surface 121a of the slit 121 moves left and right horizontally in a width direction (axial direction) of the slit 121. Therefore, the moving direction of the vacuum cleaner head 100 and the moving direction of the open surface 121a of the slit 121 are perpendicular to each other. Even if the vacuum cleaner head 100 is twisted left and right while cleaning, the moving direction of the open surface 121a changes correspondingly, so that they can always be perpendicular to each other.

[0079] During cleaning, if rotor 110 rotates at a speed fast enough relative to the moving speed of the head, the time from when the entire area of ​​slit 121 is opened to when it is closed is shortened, and cleaning can be performed in the same way as if the entire slit 121 was open. Therefore, foreign objects distributed on the floor surface are prevented from being sucked in by the closure of slit 121, and the rotor 110 opens blocking surface 121b as it rotates to suck in the foreign objects, improving cleaning efficiency.

[0080] When a constant power is supplied to generate a suction force by the motor, the vacuum cleaner head according to the present invention increases the suction force and more effectively sucks up foreign objects. Therefore, the power supplied to the motor can be reduced while improving the suction efficiency, and the weight of the battery that supplies the power can be reduced accordingly, or the operating time of the vacuum cleaner can be extended. In addition, while wireless vacuum cleaners tend to be tired and inconvenient when cleaning for long periods of time due to the weight of the heavy battery, the vacuum cleaner head according to the present invention reduces the weight of the battery, allowing the user to clean more conveniently.

[0081] The motor of a conventional vacuum cleaner is located on the top or rear of the dust collector. When foreign objects accumulate in the dust collector as the user cleans, the foreign objects accumulate in the filter that filters dust from the intake air and clog the suction hole of the motor. This weakens the suction power of the vacuum cleaner and reduces cleaning efficiency.

[0082] Since a battery-powered robot vacuum cleaner needs to clean while passing through narrow spaces, it is difficult to increase its size beyond a certain level. The number of batteries installed in the robot vacuum cleaner is also limited, so the suction force and usage time are limited. The vacuum cleaner head of the present invention can also be applied to a robot vacuum cleaner. A robot vacuum cleaner equipped with the head of the present invention can generate a larger suction force even with a limited battery capacity, and can increase the operating time. This overcomes the disadvantages of a robot vacuum cleaner, such as low suction force and short usage time, and can improve 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 as shown in FIG. 4(a) and FIG. 4(b) or may be mounted on the inside of the drum casing. 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 rotary shaft of the rotary motor 123 and the through hole 112 of the rotor 110 are coupled by the timing belt 124 or the gear 126. Therefore, the rotor 110 can be driven by transmitting the rotational force of the rotary motor 123 to the through hole 112. In the case where the through hole 112 protrudes inward or has a flat shape, a shaft is further provided in the drum casing 120, which is inserted into the through hole and then rotated to rotate the rotor. This is a simple modification according to the shape of the through hole 112, so a detailed description will be omitted.

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

[0085] The rotor 110 according to the present invention is rotated by a driving force transmitted from the rotary motor 123. The effect of the present invention can be achieved because the rotation speed of the rotor 110 rotated by the rotary motor 123 is much faster than the moving speed of the cleaner head moved by the user.

[0086] FIG. 9(a) is a flow chart showing a method for automatically controlling the rotor rotation speed of the vacuum cleaner head of the present invention, and FIG. 9(b) is a flow chart showing a method for manually controlling the rotor rotation speed.

[0087] The rotation speed of the rotor 110 may be controlled either by an automatic control method in which the rotation speed of the rotor 110 is automatically determined by sensing the moving speed of the vacuum cleaner head to achieve an optimal suction force, or by a manual control method in which the user directly determines the speed.

[0088] The automatic control method detects the moving speed of the vacuum cleaner head, i.e., the speed (and may include the direction) at which the user moves the vacuum cleaner head, as shown in Fig. 9(a). In this case, a previously developed sensor such as an infrared, laser, or acceleration sensor is used. A sensor (not shown) is attached to one side of the vacuum cleaner head, and a control unit (not shown) receiving speed information of the vacuum cleaner head from the sensor appropriately adjusts the rotation speed of the rotary motor 123 so that sufficient suction force is provided. 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] 9(b), the manual control method includes a switch for adjusting the rotation speed of the rotary motor 123 by voltage, current, or pulse, and when the switch is selected by the user, the rotary motor 123 is driven at the selected rotation speed. The switch may be any type that allows the user to directly determine the speed, such as a button type for directly pressing a step, a touch type for changing the speed depending on the number of times it is pressed, or a slide type for moving a position.

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

[0091] 6 and 7, the roller neck 130 has circular fixing parts 135 at both ends for supporting the drum casing 120, and an exposed part 136 between the fixing parts 135 at both ends is open so that the drum casing 120 can be exposed to the outside. The exposed part 136 exposes the drum casing 120 to be inserted inside, and a 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 the dust collector.

[0092] A partition wall 131 is formed inside the roller neck 130 to separate an upper space from a lower space. The drum casing 120 is connected to the roller neck 130 and positioned in the open lower space, and the space formed in the upper space separated from the space in which the drum casing 120 is installed by the partition wall 131 is formed as an upper passage 133 through which foreign matter is guided to a suction pipe 134.

[0093] As shown in FIG. 1, the roller neck 130 may have side walls 150 coupled to both sides thereof, and the side passages 132 may be sealed.

[0094] FIG. 8(a) is a perspective view showing the rotor, drum casing, and roller neck of the vacuum cleaner head of the present invention when they are combined, and FIG. 8(b) is a perspective view showing the rotor, drum casing, roller neck, and barrier film when they are combined.

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

[0096] 8(b), a barrier film 140 is provided to prevent foreign matter, which is sucked into the rotor 110 through the open surface 121a and discharged from the through hole 112, from being caught between the timing belt 124 or the gear 126. The barrier film 140 prevents the foreign matter discharged from the through hole 112 of the rotor 110 from being sucked into the inner surface of the timing belt 124 or the gear 126, and moves to the upper passage 133 through the side passages 132 formed at both ends of the roller neck 130. That is, the side passage 132 is formed by the fixed portion of the roller neck 130, the barrier film 140, and the side wall 150, and guides 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, receives foreign matter from the side passage 132, and guides it to a suction pipe 134 formed in the center.

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

[0099] When the motor is started by supplying power, the fan attached to the motor generates a blowing force that tries to send air outside the vacuum cleaner. The blowing 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 connection part, and in the head, it acts in order from the suction pipe 134 to 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 from the open surface 121a.

[0100] Foreign matter first enters through the slit 121 formed on the bottom surface of the drum casing 120, and is sucked in through the open surface 121a that overlaps with the opening 111 of the rotor 110 and opens. Suction is not possible at the blocking surface 121b where the slit 121 is closed by the blocking part 113 of the rotor 110. Therefore, the rotary motor 123 mounted on the drum casing 120 rotates the rotor 110, and the position of the open surface 121a of the slit 121 can be changed and opened to the entire area. The position of the open surface 121a moves horizontally along the slit 121. Foreign matter located at the blocking surface 121b of the slit 121 can also be sucked in because the slit 121 opens as the rotor 110 rotates. The sucked foreign matter inside the rotor 110 exits through the through hole 112. In this case, the through hole 112 may be formed at one end or both ends according to various embodiments. The foreign matter discharged from the through-hole 112 passes through the side passage 132 and is sucked into the upper passage 133, and is guided to the dust collector by a suction pipe 134 formed in the center of the upper passage 133. EXAMPLES

[0101] Hereinafter, a detailed description will be given of a vacuum cleaner head according to a second embodiment of the present invention. Detailed description of the configuration described in the first embodiment will be omitted in the second embodiment.

[0102] The vacuum cleaner head according to the second embodiment of the present invention includes a rotor 110 into which foreign objects are sucked through an opening 111 having a spiral outer periphery; the rotor 110 is inserted into a hollow interior, and a slit 121 is formed on the bottom thereof so that foreign objects on a surface to be cleaned can flow in. Axial a drum casing 120 having a cover surface 127 formed thereon and surrounding the rotor 110;

[0103] Like the first embodiment, the vacuum cleaner head 100 according to the second embodiment of the present invention aims to reduce the suction area into which foreign objects are sucked in, thereby strengthening the suction power, and to vary the suction area so that foreign objects can be sucked in over the entire area, while at the same time simplifying the air flow caused by the suction force in the head portion, thereby improving the cleaning efficiency by suction.

[0104] In order to achieve the object of the present invention, a rotor 110 having an opening 111 is provided and inserted into a drum casing 120 having a slit 121 formed in the bottom surface.

[0105] The suction force generated by the motor is concentrated at the open surface 121a, which is the area where the opening 111 and the slit 121 overlap, and foreign objects are sucked in with strong force. As the open surface 121a moves inside the slit 121 due to the rotation of the rotor 110, the enhanced suction force acts on the entire area of ​​the slit 121, and a wide area can be cleaned with a strong suction force.

[0106] Unlike the first embodiment in which the foreign matter flowing in from the open surface 121a moves to the dust collector through both ends of the rotor 110, the foreign matter moves to the upper surface (opposite side of the slit 121) of the drum casing 120 through the opening 111 of the rotor 110. To this end, both ends of the rotor 110 are closed, and the foreign matter that flows into the inside of the rotor 110 through the open surface 121a of the slit 121 and the opening 111 of the rotor 110 is discharged again from the opening 111 of the rotor 110, and moves in and out of the inside and outside of the rotor 110, and the foreign matter discharged from the opening 111 of the rotor 110 is discharged from the discharge hole 128 at the top of 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 as one or more separate holes on the upper surface of the drum casing 120, or may be formed as 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 an open surface 121a, which is an overlapping portion of the slit 121 and the opening 111. The foreign matter that has flowed into the inside of the rotor 110 flows along the suction force and then exits through a discharge hole 128 formed in the drum casing 120 and moves to the dust collector.

[0109] Therefore, the foreign matter flows into the opening 111 on the bottom surface of the rotor 110 and exits from the opening 111 located on the opposite side, that is, the top surface, of the opening 111 into which the foreign matter flowed, that is, flows while penetrating the rotor 110.

[0110] In Example 2, the flow path of foreign matter is smaller than that in Example 1, so that the inhalation time and the inhalation efficiency can be improved.

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

[0112] Both ends of the rotor 110 are closed and formed so that the rotating shaft protrudes, and an opening 111 through which foreign objects can enter and exit and a blocking portion 113 through which foreign objects cannot enter and exit are formed in the body. The opening 111 and the blocking portion 113 forming the body of the rotor 110 may be hollow as shown in Fig. 11, or may be shaped so that the body surface 115 in which the inside of the blocking portion 113 is filled extends to the inside and only the opening 111 is open as shown in Figs. 12 and 13.

[0113] Foreign matter present on the surface to be cleaned may enter the inside of the rotor 110 through the opening 111 and then be discharged to the outside, but cannot enter or exit through the blocking portion 113.

[0114] The opening 111 and the cutoff portion 113, which are the body of the rotor 110, are formed continuously, and may be provided in a spiral shape with a certain lead angle. Although the opening 111 and the cutoff portion 113 of the rotor 110 are described as being spiral-shaped, the cylindrical rotor 110 rotates and at any given moment, the opening 111 and the cutoff portion 113 are partially exposed at the slit 121 at the same time, and the shape changes depending on the rotation. A non-spiral shape is also included in the concept of the present invention.

[0115] In the second embodiment, opening 111 of rotor 110 is configured to suck foreign matter into the interior and simultaneously expel it to the exterior. Blocking portion 113 is configured to close a part of the area of ​​slit 121, thereby reducing the area of ​​slit 121 and concentrating the suction force generated by the motor only on open surface 121a.

[0116] The blocking portion 113 of the rotor 110 according to the second embodiment of the present invention may be extended into the rotor 110 and filled to the center. In this shape, the opening 111 is a hollow surface 114 that is open continuously to the inside, and the blocking portion 113 is a body surface 115 that is filled to the inside, so that foreign matter that has flowed into the rotor 110 through the opening 111 moves to the hollow surface 114 with the body surface 115 of the blocking portion 113 as a boundary, minimizing the flow path and preventing it from remaining inside the rotor 110. In this case, the body surface 115 may not be completely filled to the center of the rotor 110, but may form a boundary surface (surface) by the body surface 115 at the edge of the hollow surface 114, and may include a state in which the center is partially excluded. In the present invention, the body surface 115 filled to the inside of the rotor 110 includes such a shape.

[0117] When the blocking portion 113 is filled to the inside of the rotor 110 to form the body surface 115, the cross section of the body surface 115 may be formed as a square cross section as shown in Fig. 12, or as a triangular or semicircular cross section (not shown) as shown in Fig. 13. The cross section of the blocking portion 113 is not limited thereto, and is within the spirit of the present invention as long as it is configured to form a flow path through which foreign matter flows in from the opening 111 on one side, passes through 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 blocking part 113 in the shortest distance to the discharge opening 111 and discharged, so that the body surface 115 of the blocking part 113 provides smooth intake and discharge performance for foreign objects. In addition, the body surface 115 of the blocking part 113 prevents foreign objects from getting stuck inside the rotor 110, so noise generated by the trapped foreign objects as they rotate can be reduced.

[0119] As shown in Figures 14 and 15, the drum casing 120 according to the second embodiment of the present invention is configured to house the rotor 110 therein 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, have shapes corresponding to the shapes of both ends of the rotor 110, and receive the protruding ends of the rotor 110 inserted therein.

[0121] 14(a) shows a configuration in which a rotary motor 123 rotates the rotor 110 via a gear 126, and FIG 14(b) shows a configuration in which the rotary motor 123 rotates the rotor 110 via a timing belt 124. This has been described in the first embodiment, so a detailed description will be omitted.

[0122] A discharge hole 128 is formed on the upper surface of the drum casing 120. The foreign matter that has entered the inside through the slits 121 is discharged from the discharge hole 128 and moves 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 thereto, and any shape that allows foreign objects to escape to the outside of the drum casing 120 will suffice.

[0124] The outer periphery excluding the slits 121 and the discharge holes 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 from the surface of the drum casing 120 excluding the slits 121 and the discharge holes 128.

[0125] Since the cover surface 127 surrounds the outer periphery of the rotor 110, a suction force is applied to the slit 121, and foreign matter can be sucked in only at the overlapping portion between the slit 121 and the opening 111.

[0126] 15, when the rotor 110 is inserted into the drum casing 120, the slits 121 in contact with the surface to be cleaned simultaneously expose the openings 111 and blocking parts 113 of the rotor 110 to the outside. The suction pressure generated by the motor is transferred to the inside of the drum casing 120 and the rotor 110 through the exhaust hole 128, and an air flow from the outside to the inside of the vacuum cleaner head 100 is formed.

[0127] The slit 121 is opened only by the opening 111 of the rotor 110 and closed at the blocking portion 113, so that the intake pressure of the motor 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 acts concentratedly on the open surface 121a, the intake force can be strengthened.

[0128] Foreign matter that has flowed into the rotor 110 from the open surface 121a rises to the top of the vacuum cleaner head 100 along with the air flow caused by the suction force, and is discharged from the discharge hole 128 through the opening 111. 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 portion 113 also rotate, and the positions of the opening 111 and the blocking portion 113 exposed through the slit 121 change.

[0130] At any given moment, a portion of slit 121 becomes open surface 121a and sucks in foreign matter, but as rotor 110 rotates, the position that was open surface 121a changes to blocking surface 121b, and the portion of slit 121 that was blocking surface 121b changes to open surface 121a and can suck in foreign matter.

[0131] The open surface 121a changes along the slit 121, so that the entire area of ​​the slit 121 allows the foreign matter to be sucked in.

[0132] 16, the roller neck 130 according to the second embodiment is configured to support the drum casing 120, and has fixing parts 135 at both ends into which the drum casing 120 is inserted, and an exposed part 136 between the fixing parts 135 is open so that the drum casing 120 can be exposed to the outside. The exposed part 136 allows the slit 121 of the drum casing 120 to come into contact with the surface to be cleaned.

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

[0134] The roller neck 130 according to the second embodiment of the present invention is a configuration that supports the drum casing 120 and defines its outer shape. However, the roller neck 130 in the second embodiment is a configuration that can be selectively adopted, and the drum casing 120 may also function as the roller neck 130 by sufficiently modifying the structure and shape so that the drum casing 120 defines the outer shape and the discharge hole 128 is formed of a tube and can be guided to the dust collector.

[0135] The operation of the vacuum cleaner head 100 according to the second embodiment of the present invention will now be described.

[0136] When the motor is started by supplying power, an intake pressure is generated in the motor, and foreign matter is moved sequentially through the open surface 121a, the inside of the rotor 110, the discharge hole 128, and the intake pipe 134 to the dust collector.

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

[0138] 100: Vacuum cleaner head 110: Rotor 111: Opening 112: Through hole 113: Breaking section 114:Hollow surface 115: Body surface 120: Drum casing 121: Slit 121a: Open surface 121b: Blocking surface 122: Casing hole 123: Rotary motor 124: Timing belt 125: Protective belt 126: Gear 127: Cover side 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 by an opening (111) having a helical outer periphery; a drum casing (120) into which the rotor (110) is inserted, the bottom surface of which is formed with a slit (121) that is open so that foreign matter on the surface to be cleaned can flow in, and a cover surface (127) surrounding the rotor (110); The slit (121) exposes an open surface (121a) formed by the opening (111) of the rotor (110) and a blocking surface (121b) formed by the blocking portion (113) that blocks foreign matter, and the open surface (121a) and the blocking surface (121b) are arranged simultaneously; A vacuum cleaner head, wherein an open surface (121a) of the slit (121) is variable by the rotating rotor (110).

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

3. 2. The vacuum cleaner head of claim 1, wherein the slits (121) in the drum casing (120) suck in foreign matter only at the open face (121a).

4. The upper part of the drum casing (120) is provided with:

2. The vacuum cleaner head of claim 1, wherein an exhaust hole (128) is formed through which foreign matter entering from an open surface (121a) where the opening (111) and the slit (121) of the rotor (110) are simultaneously formed is exhausted.

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

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

7. 7. The vacuum cleaner head of claim 6, wherein the roller neck (130) is longer than the drum casing (120) and includes a side passage (132) through which foreign objects pass.

8. The vacuum cleaner head of claim 1, wherein the rotor (110) is hollow and has a through hole (112) formed in a side thereof through which foreign matter moves.

9. In the rotor (110), The blocking portion (113) that blocks foreign matter is a body surface (115) that is filled with air. is formed, 2. A vacuum cleaner head as claimed in claim 1, wherein incoming foreign matter passes through the open face (121a), passes between the body faces (115) and penetrates through an opening (111) on the central opposite face.

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