Vacuum cleaner

Abstract

Provided is a vacuum cleaner that has an improved roller structure mounted in a suction nozzle, and thus can prevent accumulation of hair or foreign substances. The vacuum cleaner comprises: a suction nozzle provided with a suction flow path for cleaning a surface-to-be-cleaned by suction force; and a roller device rotatably provided inside the suction nozzle, wherein the roller device comprises: a roller having an inclined surface; and a rotary shaft that rotatably supports the roller and is provided at a second angle equal to a first angle of the inclined surface.

Description

vacuum cleaner

[0001] The present disclosure relates to a vacuum cleaner, and more particularly, to a vacuum cleaner having an improved structure to prevent hair or foreign matter from getting caught in a roller.

[0002] A vacuum cleaner is generally a device used to remove rubbish from an indoor space, thus cleaning it. Vacuum cleaners are widely used in homes. Vacuum cleaners utilize the suction power of a fan motor unit to suck in air, then separate the debris from the air using a filter or other device to clean the interior.

[0003] These vacuum cleaners are of the canister type and upright type, and recently, robot vacuum cleaners that move around the cleaning area on their own without user intervention and perform cleaning work by sucking up dust and other debris from the surface to be cleaned have become popular.

[0004] A canister vacuum cleaner includes a main body in which a blower and a dust collector are built in, a suction nozzle that is installed separately from the main body to suck up dust from the floor, and a connecting pipe that connects the main body and the suction nozzle.

[0005] Therefore, the user cleans by holding the handle installed on the connecting pipe and moving the suction nozzle in the direction of cleaning.

[0006] An upright vacuum cleaner comprises a vertical body and a suction nozzle integrated into the lower portion of the body. The user holds the handle located on the upper side of the body and moves the entire upright vacuum body to clean.

[0007] Upright vacuum cleaners incorporate drum brushes within the suction nozzle to enhance cleaning efficiency. These drum brushes rotate at high speed and, by contacting the surface being cleaned, detach foreign matter attached to the upper surface. These detached foreign matter is then sucked into the suction nozzle and collected by the dust collector built into the main unit.

[0008] The suction nozzle of such vacuum cleaners may be equipped with rollers to facilitate smooth movement.

[0009] One aspect of the present disclosure provides a vacuum cleaner capable of preventing hair or foreign matter from accumulating by improving a roller structure mounted on a suction nozzle.

[0010] One aspect of the present disclosure provides a vacuum cleaner that can facilitate discharge of foreign substances by improving the mounting structure of the roller.

[0011] One aspect of the present disclosure provides a vacuum cleaner having an improved roller structure to facilitate attachment and detachment of the roller.

[0012] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0013] A vacuum cleaner according to the invention includes a suction nozzle having a suction path for cleaning a surface to be cleaned (B) by suction force, and a roller device rotatably provided on the suction nozzle, wherein the roller device includes a roller having an inclined surface, and a rotation shaft that rotatably supports the roller and is provided at a second angle that is the same as the first angle of the inclined surface.

[0014] A vacuum cleaner according to the invention includes a cleaner body, a suction nozzle connected to the cleaner body and having a suction path for cleaning a surface to be cleaned (B) by suction force, and the suction nozzle includes a roller installation portion provided on a bottom surface of the suction nozzle, a rotary shaft installed on the roller installation portion and inclined with respect to the bottom surface, and a roller rotatably mounted on the rotary shaft and having an inclined surface having the same inclination angle as the inclination angle of the rotary shaft.

[0015] For example, the mounting structure of the roller can be improved to facilitate the discharge of foreign substances.

[0016] For example, the roller structure can be improved to facilitate attachment and detachment of the roller.

[0017] Figure 1 is a perspective view showing a vacuum cleaner according to one embodiment;

[0018] Fig. 2 is a perspective view showing a suction nozzle of the vacuum cleaner illustrated in Fig. 1;

[0019] Figure 3 is a bottom view showing the suction nozzle illustrated in Figure 2;

[0020] Figure 4 is an enlarged view of part B of Figure 3, showing a roller mounted on a suction nozzle according to one embodiment.

[0021] Figure 5 is a partially exploded perspective view showing a roller mounted on a suction nozzle according to one embodiment;

[0022] Fig. 6 is a cross-sectional view of the AA' portion of Fig. 2, showing a roller mounted on a suction nozzle.

[0023] Fig. 7 is an enlarged view of part C of Fig. 6, a cross-sectional view of a roller according to one embodiment;

[0024] Figure 8 is a drawing showing a roller installation part of a suction nozzle and a bypass hole formed in the roller installation part according to one embodiment.

[0025] Figure 9 is a drawing showing air flow through a bypass hole formed in a roller installation portion of a suction nozzle according to one embodiment;

[0026] Fig. 10 is a drawing showing a bypass hole formed in a roller installation part of a suction nozzle according to one embodiment;

[0027] Figure 11 is a drawing showing the air flow through the bypass hole of the suction nozzle illustrated in Figure 10.

[0028] Fig. 12 is a drawing showing a bypass hole formed in a roller installation part of a suction nozzle according to one embodiment;

[0029] Figure 13 is a drawing showing the air flow through the bypass hole of the suction nozzle illustrated in Figure 12.

[0030] It should be understood that the various embodiments of the document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

[0031] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0032] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0033] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0034] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0035] Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0036] When a component (e.g., a first component) is referred to as being “coupled” or “connected” to another component (e.g., a second component), with or without the terms “functionally” or “communicatively,” it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0037] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0038] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0039] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where another component exists between the two components.

[0040] Meanwhile, the terms “front,” “rear,” “left,” and “right” used in the description below are defined based on the drawing, and the shape and position of each component are not limited by these terms.

[0041] Hereinafter, the embodiments described in this specification will be described in detail with reference to the attached drawings.

[0042] FIG. 1 is a perspective view showing a vacuum cleaner according to one embodiment.

[0043] As illustrated in FIG. 1, a vacuum cleaner (1) includes a suction nozzle (10) provided to suck up foreign substances from a surface to be cleaned (not shown, floor (B)) by the suction force of air, a cleaner body (20) provided to capture foreign substances sucked through the suction nozzle (10), and a connecting member (30) provided to connect between the suction nozzle (10) and the cleaner body (20).

[0044] The vacuum cleaner body (20) may include a motor (not shown) that generates suction force required to suck up foreign substances from the surface to be cleaned and a dust bin (21) that receives foreign substances sucked up from the surface to be cleaned. The motor may generate power to generate suction force inside the vacuum cleaner body (20). The dust bin (21) may be provided so as to be detachable from the vacuum cleaner body (20). The dust bin (21) may be provided so as to filter and collect dust or dirt, etc., that enters through the suction nozzle (10).

[0045] The vacuum cleaner body (20) may include a filter housing (21a) configured to accommodate a filter (not shown). The filter housing (21a) may be configured in a roughly donut shape. There is no limitation on the type of filter, but as an example, a Hepa filter may be configured. The filter is configured to filter ultrafine dust and the like that are not filtered out in the dust bin (21).

[0046] The vacuum cleaner body (20) may include a handle (23) so that a user can hold and operate the vacuum cleaner. The user can clean by holding the handle (23) and moving the suction nozzle (10) of the vacuum cleaner (1) in the forward and backward directions.

[0047] The vacuum cleaner body (20) may further include a control unit (22). The user can turn the vacuum cleaner on / off or adjust the suction strength, etc. by operating the power button, etc. provided on the control unit (22).

[0048] The vacuum cleaner body (20) may further include a battery (24). The battery (24) may be detachably mounted on the vacuum cleaner body (20). Although not shown, the battery (24) may be electrically connected to a charging terminal provided on a vacuum cleaner stand or docking station. The battery (24) may be charged by receiving power from a charging terminal provided on the vacuum cleaner stand or docking station.

[0049] The suction nozzle (10) may be configured to come into contact with the surface to be cleaned. The suction nozzle (10) may be provided to come into contact with the surface to be cleaned and suck up foreign substances such as dust present on the surface to be cleaned. A detailed description of the suction nozzle (10) will be described later.

[0050] The suction nozzle (10) and the vacuum cleaner body (20) can be connected by a connecting member (30). The connecting member (30) can be provided so that one end is pivotally connected to the suction nozzle (10) so that the suction nozzle (10) can move articulately with respect to the connecting member (30).

[0051] The connecting member (30) may include a first connecting portion (31) and a second connecting portion (32).

[0052] The first connecting portion (31) is provided so that the connecting member (30) can be separated or connected to the cleaner body (20). The first connecting portion (31) may include a separation button (31a) provided to separate it from the cleaner body (20). After separating the connecting member (30) from the cleaner body (20), the suction nozzle (10) may be directly connected to the cleaner body (20).

[0053] The second connecting portion (32) is provided so that the suction nozzle (10) can be separated or combined. The second connecting portion (32) is provided so that it can be separated or combined from the suction nozzle (10).

[0054] Fig. 2 is a perspective view showing the suction nozzle of the vacuum cleaner shown in Fig. 1, and Fig. 3 is a bottom view showing the suction nozzle shown in Fig. 2.

[0055] As shown in FIGS. 2 and 3, the suction nozzle (10) of the vacuum cleaner (1) can be connected to a connecting member (30) or the cleaner body (20) through a connecting bracket (40).

[0056] The suction nozzle (10) can be connected to the second connection portion (32) of the connection member (30). The connection bracket (40) of the suction nozzle (10) can be connected to the second connection portion (32) of the connection member (30).

[0057] The connecting bracket (40) may be pivotally connected to the suction nozzle (10) so that the suction nozzle (10) can articulate with respect to the connecting member (30).

[0058] The suction nozzle (10) may include a base (11) provided to form a bottom surface, and a cover (12) combined with the base (11) to form a suction path (50) for cleaning the surface to be cleaned by suction force.

[0059] The suction nozzle (10) may include a suction port (11a). The suction nozzle (10) may be formed by a base (11) and a cover (12). The suction port (11a) may be formed in at least a portion of the base (11). The suction port (11a) may be formed in the front center of the base (11). It is preferable that the suction port (11a) be formed in the front center of the base (11). The suction port (11a) may be formed in at least a portion of the cover (12). It is preferable that the suction port (11a) be formed in the front center of the cover (12).

[0060] The suction port (11a) can be formed by combining the base (11) and the cover (12). Air and foreign substances sucked from the cleaning surface (B) (see Fig. 6) through the suction port (11a) can be transferred to the cleaner body (20) through the suction path (50) and collected.

[0061] The cover (12) is provided to be coupled to the upper side of the base (11) to form the upper outer surface of the suction nozzle (10). The base (11) is provided to be coupled to the lower side of the cover (12) to form the lower outer surface of the suction nozzle (10).

[0062] *The cover (12) may be arranged to be combined with the base (11) to form a suction passage (50) inside. The suction passage (50) may be arranged to be connected to the suction port (11a).

[0063] The suction nozzle (10) may include a drum brush (15). The suction port (11a) of the suction nozzle (10) may be provided with a drum brush (15) to facilitate cleaning. The drum brush (15) may be provided on the suction path (50) of the suction nozzle (10). The drum brush (15) may be provided rotatably inside the suction nozzle (10). The drum brush (15) may be provided rotatably on the suction path (50) of the suction nozzle (10). The drum brush (15) may be provided rotatably inside the suction nozzle (10) to facilitate cleaning of a floor or carpet, etc.

[0064] The suction nozzle (10) may include a roller device (100) provided to facilitate smooth movement. The roller device (100) may be provided on the base (11) to move the suction nozzle (10).

[0065] A roller installation portion (150) for installing a roller device (100) may be provided on the base (11) of the suction nozzle (10). The roller installation portion (150) may be provided on at least a portion of the base (11). The roller installation portion (150) may be provided on the inside of the bottom surface (17) of the base (11). A detailed description of the roller installation portion (150) will be provided later.

[0066] The roller device (100) may be installed on the base (11) of the suction nozzle (10). The roller device (100) may be installed rotatably. In the present embodiment, the roller devices (100) are shown as being arranged on the left and right sides of the base (11), but this is not limited thereto. For example, at least one roller device may be arranged depending on the shape or size of the suction nozzle.

[0067] FIG. 4 is an enlarged view of part B of FIG. 3, which is a drawing showing a roller mounted on a suction nozzle according to one embodiment, FIG. 5 is a partially exploded perspective view showing a roller mounted on a suction nozzle according to one embodiment, FIG. 6 is a cross-sectional view of part AA' of FIG. 2, which is a cross-sectional view showing a roller mounted on a suction nozzle, and FIG. 7 is an enlarged view of part C of FIG. 6, which is a cross-sectional view of a roller according to one embodiment.

[0068] As shown in FIGS. 4 to 7, a roller device (100) rotatably provided on a suction nozzle (10) may include a roller (110) and a rotational shaft (120) that rotatably supports the roller (110).

[0069] The roller device (100) may be provided on at least a part of the base (11). The roller device (100) may be provided on the roller installation part (150) of the base (11). The roller installation part (150) may be provided on the bottom surface (17) of the base (11). The roller installation part (150) may be provided on the inner side of the bottom surface (17) of the base (11). The roller installation part (150) may be provided near the suction port (11a). The roller installation part (150) may be provided on the suction path (50) of the base (11). The roller installation part (150) may be arranged on the suction path (50) in which the drum brush (15) is installed.

[0070] The roller installation part (150) may be provided on one side and the other side of the base (11). The roller installation part (150) may be provided on a part of the base (11) that forms the suction port (11a). The roller installation part (150) may be provided on each of the left and right sides of the suction port (11a) of the base (11). The roller installation part (150) may be provided on each of the left and right side walls (11c, 11d) that form the suction port (11a) of the base (11).

[0071] The base (11) may include a base body (11b). The base body (11b) may be provided to form an inlet (11a) and a suction path (50). The base body (11b) may include a left wall (11c) and a right wall (11d). The left wall (11c) and the right wall (11d) of the base body (11b) may be provided to form a portion of the inlet (11a) and the suction path (50). The base body (11b) may have a suction path (50) provided therein. The base body (11b) may have a connecting bracket (40) connected to the rear end thereof.

[0072] The roller installation part (150) may be provided on a part of the base (11) forming the suction path (50). The roller installation part (150) may be provided on the left wall (11c) and the right wall (11d) of the base (11). The roller installation part (150) may be provided on the left wall (11c) of the base (11) in a direction toward the suction port (11a). The roller installation part (150) may be provided on the right wall (11d) of the base (11) in a direction toward the suction port (11a). The roller installation parts (150) provided on the left wall (11c) and the right wall (11d) of the base (11) may be arranged to face each other toward the center of the base (11).

[0073] The roller installation part (150) may include a roller installation bracket (151). The roller installation bracket (151) may be provided to cover the roller (110). The roller installation bracket (151) may be provided to surround the outer side of the roller (110). The roller installation bracket (151) may include a first bracket (151a) provided to cover one side of the roller (110), a second bracket (151b) corresponding to the first bracket (151a) to cover the other side of the roller (110), and a third bracket (151c) connecting the first bracket (151a) and the second bracket (151b) and corresponding to the cleaning surface (B).

[0074] The first bracket (151a), the second bracket (151b), and the third bracket (151c) of the roller installation bracket (151) may be provided in a plate shape so as to cover at least a portion of the roller (110). In the present embodiment, the roller installation bracket is illustrated as having a plate shape so as to cover the outer side of the roller, but is not limited thereto. For example, the roller installation bracket may also be formed in a curved shape so as to be able to wrap around the outer side of the roller.

[0075] A roller device (100) can be mounted on the roller installation bracket (151). The roller device (100) can be rotatably mounted on the inside of the roller installation bracket (151).

[0076] The roller installation bracket (151) may be provided so that the roller (110) of the roller device (100) can be mounted or detached. The roller installation bracket (151) may include a first opening (152a) so that the roller (110) of the roller device (100) can be mounted or detached. The first opening (152a) may be formed to face the center of the base (11). The first opening (152a) may be formed to face the suction passage (50) of the base body (11b). The first opening (152a) may be connected to the suction passage (50).

[0077] A second opening (152b) may be formed in the third bracket (151c) of the roller installation bracket (151). The second opening (152b) may be formed to face the lower side of the base (11). The second opening (152b) may be formed so that at least a portion of the sloped surface (112) of the roller (110) described below comes into contact with the cleaning surface (B). The second opening (152b) may be formed to be connected to the first opening (152a). The second opening (152b) may be formed to be connected to the lower end of the first opening (152a).

[0078] The roller device (100) may include a roller (110) and a rotation shaft (120).

[0079] The roller (110) may have a coupling groove (111) formed in the center to couple the rotation shaft (120). At least a portion of the rotation shaft (120) may be coupled to the coupling groove (111) of the roller (110). At least a portion of the rotation shaft (120) may be press-fitted into the coupling groove (111) of the roller (110) to be coupled. The roller (110) may have a trapezoidal cross-section. The roller (110) may include an inclined surface (112) having a first angle (θ1). The roller (110) may have an inclined angle (θ) of the first angle (θ1). The inclined surface (112) of the roller (110) may be formed toward the center of the base (11). The cross-section of the roller (110) may have a trapezoidal shape whose width becomes narrower toward the center of the base (11). At least a portion of the inclined surface (112) of the roller (110) may be provided to contact the surface to be cleaned (B). The first angle (θ1) of the roller (110) may be formed as an acute angle. The inclined surface (112) of the roller (110) causes foreign substances such as hair that have entered the roller (110) or the rotating shaft (120) to move toward the suction path (50) along the incline of the first angle (θ1) and be sucked in by the suction force.

[0080] The inclined surface (112) of the roller (110) is formed to be inclined toward the center of the base (11), i.e., toward the suction path (50), so that hair or foreign matter entering through the first opening (152a) and the second opening (152b) of the roller installation bracket (151) can be guided to move directly along the inclined surface (112) toward the suction path (50) without staying on the roller (110) or the rotation shaft (120).

[0081] The roller (110) can be mounted or detached from the rotation shaft (120) through the first opening (152a) of the roller installation bracket (151). The first opening (152a) of the roller installation bracket (151) is formed toward the suction path (50) of the base (11), so that hair or foreign substances moving along the inclined surface (112) of the roller (110) can be introduced into the suction path (50).

[0082] The rotation shaft (120) may be provided at an angle with respect to the bottom surface (17) of the suction nozzle (10), i.e., the bottom surface (17) of the base (11). The rotation shaft (120) may be formed in a cylindrical shape. One end of the rotation shaft (120) may be provided on the roller installation bracket (151).

[0083] The rotational axis (120) may be provided to be inclined at a second angle (θ2). The rotational axis (120) may have an inclination angle (θ) of the second angle (θ2). The second angle (θ2) of the rotational axis (120) may be formed as an acute angle. The second angle (θ2) of the rotational axis (120) may be the same as the first angle (θ1). The rotational axis (120) may be provided to be inclined at a second angle (θ2) that is the same as the first angle (θ1) of the roller (110). The inclined surface (112) of the roller (110) may be provided to be parallel to the second angle (θ2) of the rotational axis (120).

[0084] The roller device (100) may include a bearing (130) that rotatably supports a rotation shaft (120). The bearing (130) may be provided between the rotation shaft (120) and the roller installation bracket (151) to rotatably support the rotation shaft (120).

[0085] The roller installation bracket (151) may include a rotation shaft coupling groove (153) for coupling the bearing (130) and the rotation shaft (120). The rotation shaft coupling groove (153) may be provided on the inner side of the roller installation bracket (151). The rotation shaft coupling groove (153) may be formed to be inclined at a second angle (θ2) on the inner surface of the roller installation bracket (151). The rotation shaft coupling groove (153) may be provided to support the base (11) at the second angle (θ2) so that the rotation shaft (120) may be inclined at the second angle (θ2) from the bottom surface (17) of the base (11).

[0086] The rotation shaft (120) and the roller (110) can be coupled to the roller installation bracket (151) at a second angle (θ2). The roller (110) is installed at a second angle (θ2) to the base (11) so that the inclined surface (112) at the first angle (θ1) comes into contact with the surface to be cleaned (B) and rotates. The inclined surface (112) of the roller (110) comes into contact with the surface to be cleaned (B) and rotates so that the suction nozzle (10) can move stably.

[0087] In addition, foreign substances such as hair on the cleaning surface (B) move toward the center of the base (11), i.e., toward the suction path (50), through the inclined surface (112) of the roller (110), so that foreign substances can be prevented from accumulating in the roller device (100).

[0088] Fig. 8 is a drawing showing a roller installation portion of a suction nozzle and a bypass hole formed in the roller installation portion according to one embodiment, and Fig. 9 is a drawing showing air flow through a bypass hole formed in the roller installation portion of a suction nozzle according to one embodiment. Hereinafter, descriptions of parts overlapping with the above description are omitted.

[0089] As illustrated in FIGS. 8 and 9, the roller installation portion (150) of the suction nozzle (10) may include a bypass hole (200). The roller installation portion (150) may include a bypass hole (200) provided to suppress eddies around the roller (110) and stabilize the flow. The bypass hole (200) may be formed to allow air to flow into the roller installation portion (150).

[0090] The bypass hole (200) is provided to allow air to flow into the roller installation portion (150). The air flowing in through the bypass hole (200) allows foreign substances, including hair, from the roller (110) to move toward the suction path (50).

[0091] A bypass hole (200) may be provided in the roller installation part (150). The bypass hole (200) may be formed in at least a portion of the roller installation bracket (151). The bypass hole (200) may be formed to face the first opening (152a) of the roller installation bracket (151). The bypass hole (200) may be formed to face the second opening (152b) of the roller installation bracket (151). Air flowing into the suction nozzle (10) may be discharged through the bypass hole (200) formed to face the second opening (152b) of the roller installation bracket (151). This may be caused by a pressure difference between the suction nozzle (10) and the suction path (50). Specifically, the area around the suction path (50) of the suction nozzle (10) is at low pressure due to the suction force of the cleaner body (20), and both ends of the base (11) where the roller device (100) of the suction nozzle (10) is located are at relatively high pressure. The bypass hole (200) formed in the roller installation part (150) where the roller device (100) is installed is located in the high pressure area. Therefore, air is discharged through the bypass hole (200) in the high pressure area, and the air discharged through the bypass hole (200) moves foreign substances including hair of the roller (110) to the low pressure side, i.e., the suction path (50) side.

[0092] Fig. 10 is a drawing showing a bypass hole formed in a roller installation portion of a suction nozzle according to one embodiment, and Fig. 11 is a drawing showing air flow through the bypass hole of the suction nozzle illustrated in Fig. 10. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0093] As shown in FIGS. 10 and 11, the suction nozzle (10A) may include a bypass hole (200A) provided to suppress vortex around the roller device (100A) and stabilize the flow.

[0094] The bypass hole (200A) may be formed to allow air to flow into the roller installation portion (150A). The bypass hole (200A) may be formed to allow air to flow into the roller installation portion (150A) where the roller device (100A) is installed.

[0095] The bypass hole (200A) may include a first bypass hole (210A) formed in the cover (12A) of the suction nozzle (10A) and a second bypass hole (220A) formed in the roller installation part (150A).

[0096] The first bypass hole (210A) may be formed in at least a portion of the cover (12A) of the suction nozzle (10A). The first bypass hole (210A) may be formed in the cover (12A) at a position connected to the roller installation part (150A) provided on the base (11A).

[0097] A second bypass hole (220A) may be provided in the roller installation portion (150A). The second bypass hole (220A) may be formed in at least a portion of the roller installation bracket (151A). The second bypass hole (220A) may be formed in the upper portion of the roller installation bracket (151A).

[0098] The first bypass hole (210A) and the second bypass hole (220A) can be connected to each other. Outside air flowing into the suction nozzle (10A) through the first bypass hole (210A) can be discharged through the second bypass hole (220A).

[0099] The air discharged through the second bypass hole (220A) moves hair or foreign substances wrapped around the roller (110A) to the low pressure side, i.e., the suction path (50A).

[0100] Air flowing into the suction nozzle (10A) through the first bypass hole (210A) is discharged through the second bypass hole (220A), so that hair or foreign substances are discharged from the roller (110A) or the rotating shaft (120A) mounted on the roller installation part (150A) and moved toward the suction path (50A).

[0101] Fig. 12 is a drawing showing a bypass hole formed in a roller installation portion of a suction nozzle according to one embodiment, and Fig. 13 is a drawing showing air flow through the bypass hole of the suction nozzle illustrated in Fig. 12. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0102] As shown in FIGS. 12 and 13, the suction nozzle (10B) may include a bypass hole (200B) provided to suppress vortex around the roller device (100B) and stabilize the flow.

[0103] The bypass hole (200B) may be formed to allow air to flow into the roller installation portion (150B). The bypass hole (200B) may be formed to allow air to flow into the roller installation portion (150B) where the roller device (100B) is installed.

[0104] A bypass hole (200B) may be provided in the roller installation part (150B). The roller installation part (150B) may include a roller installation bracket (151B) configured to surround the roller (110B). The bypass hole (220B) may be formed in at least a portion of the roller installation bracket (151B). The bypass hole (220A) may be formed at the rear of the roller installation bracket (151A).

[0105] The bypass hole (200B) may be formed from the rear to the front of the roller installation bracket (151B). The bypass hole (200B) may be formed at a position facing the first opening (152Aa) of the roller installation bracket (151B). The air discharged through the bypass hole (200B) may move toward the suction path (50B) along the inclined surface of the roller (110B) without hair or foreign substances accumulating on the roller device (100B) rotatably mounted on the roller installation bracket (151B).

[0106] Hair wrapped around the roller (110B) or foreign substances accumulated on the rotating shaft (120B) can be moved to the suction path (50B) by the air discharged through the bypass hole (200B).

[0107] A vacuum cleaner according to one embodiment includes a suction nozzle having a suction path for cleaning a surface to be cleaned (B) by suction force, and a roller device rotatably provided on the suction nozzle, wherein the roller device includes a roller having an inclined surface, and a rotation shaft that rotatably supports the roller and is provided at a second angle that is the same as a first angle of the inclined surface.

[0108] According to the present disclosure, the roller structure mounted on the suction nozzle can be improved to prevent hair or foreign substances from accumulating.

[0109] According to the present disclosure, the mounting structure of the roller can be improved to facilitate discharge of foreign substances.

[0110] According to the present disclosure, the roller structure can be improved to facilitate attachment and detachment of the roller.

[0111] The first angle (θ1) or the second angle (θ2) is formed as an acute angle. The inclined surface (112) is arranged parallel to the rotation axis (120).

[0112] The above suction nozzle (10) includes a base (11) in which a suction port (11a) is formed, and a cover (12) that is coupled to the base (11) and in which the suction path (50) is formed inside, and the base (11) includes a roller installation part (150) in which the roller device (100) is installed. The rotational shaft (120) is arranged to face the center of the base (11).

[0113] The roller installation part (150) includes a roller installation bracket (151) formed to cover the roller (110), and the roller installation bracket (151) includes a first opening (152a) formed to allow the roller to be coupled or separated, and a second opening (152b) formed to allow at least a portion of the inclined surface (112) of the roller (110) to come into contact with the cleaning surface (B).

[0114] The first opening (152a) is formed to face the center of the base (11), and the second opening (152b) is formed to face the lower side of the base (11).

[0115] According to the present disclosure, the roller mounting structure can be improved to prevent hair or foreign matter from accumulating on the roller or roller mounting portion.

[0116] The above roller device (100) includes a bearing (130) provided to rotatably support the rotation shaft (120).

[0117] The first opening (152a) is connected to the suction passage (50). The roller installation part (150) includes a bypass hole (200) formed by opening at least a portion thereof. The bypass hole (200) is arranged to face the first opening (152a). The bypass hole (200) is arranged to face the second opening (152b). At least one bypass hole (200) is formed.

[0118] According to the present disclosure, the roller mounting structure can be improved to facilitate the discharge of hair or foreign substances.

[0119] The cross-section of the roller (110) is a trapezoidal shape that becomes narrower toward the center of the base (11). According to the present disclosure, hair or foreign matter can move toward the suction path along the inclined surface of the roller, thereby facilitating discharge of the hair or foreign matter.

[0120] According to one embodiment, a vacuum cleaner comprises a cleaner body (20); a suction nozzle (10) connected to the cleaner body (20) and having a suction path (50) for cleaning a surface (B) to be cleaned by suction force; and the suction nozzle (10) comprises a roller installation part (150) provided on a bottom surface (17) of the suction nozzle (10), a rotation shaft (120) installed on the roller installation part (150) and inclined with respect to the bottom surface (17), and a roller (110) rotatably mounted on the rotation shaft (120) and having an inclined surface (112) having an inclined angle (θ) equal to an inclined angle (θ) of the rotation shaft (120).

[0121] According to the present disclosure, the roller structure mounted on the suction nozzle can be improved to prevent hair or foreign substances from accumulating and facilitate discharge of foreign substances.

[0122] According to the present disclosure, the roller structure can be improved to facilitate attachment and detachment of the roller.

[0123] The above inclination angle (θ) is formed as an acute angle.

[0124] The above suction nozzle (10) includes a base (11) in which a suction port (11a) is formed, and a cover (12) that is coupled to the base (11) and in which the suction path (50) is formed inside, and the roller installation part (150) is provided on the base (11). The rotational shaft (120) is arranged to face the center of the base (11).

[0125] The roller installation part (150) includes a first opening (152a) formed toward the center of the base (11) so that the roller (110) can be coupled or separated, and a second opening (152b) formed toward the lower side of the base (11) so that at least a portion of the roller (110) can come into contact with the cleaning surface (B). The roller installation part (150) includes a bypass hole (200) formed by opening at least a portion of the opening.

[0126] These vacuum cleaners can prevent hair or foreign matter from accumulating by improving the roller structure mounted on the suction nozzle.

[0127] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0128] In describing the vacuum cleaner with reference to the attached drawings above, specific shapes and directions have been mainly described, but it should be understood that various modifications and changes can be made by a person skilled in the art, and such modifications and changes should be interpreted as being included within the scope of the disclosed invention.

Claims

1. A suction nozzle having a suction path for cleaning the surface to be cleaned by suction force; Including a roller device that is rotatably provided on the above suction nozzle; The above roller device, A roller having a slope, A vacuum cleaner comprising a rotating shaft that rotatably supports the roller and is provided at a second angle that is the same as the first angle of the inclined surface.

2. In paragraph 1, A vacuum cleaner wherein the first angle or the second angle is formed as an acute angle.

3. In paragraph 1, A vacuum cleaner wherein the above inclined surface is arranged parallel to the above rotation axis.

4. In paragraph 1, The above suction nozzle, A base in which an inlet is formed, It includes a cover that is combined with the above base and has the suction path formed inside it, A vacuum cleaner wherein the base includes a roller installation part on which the roller device is installed.

5. In paragraph 4, A vacuum cleaner wherein the rotation axis is positioned toward the center of the base.

6. In paragraph 4, The above roller installation part, Including a roller installation bracket formed to cover the above roller, The above roller installation bracket has a first opening formed to allow the roller to be combined or separated, A vacuum cleaner including a second opening formed so that at least a portion of the inclined surface of the roller comes into contact with the surface to be cleaned.

7. In paragraph 6, The above first opening is formed so as to face the center of the base, A vacuum cleaner wherein the second opening is formed so as to face the lower side of the base.

8. In paragraph 6, The above roller device, A vacuum cleaner including a bearing provided to rotatably support the above-mentioned rotating shaft.

9. In paragraph 6, The above first opening is a vacuum cleaner connected to the suction passage.

10. In paragraph 6, The above roller installation part, A vacuum cleaner comprising a bypass hole formed by at least a portion being open.

11. In paragraph 10, The above bypass hole is, A vacuum cleaner positioned opposite the first opening.

12. In paragraph 10, The above bypass hole is, A vacuum cleaner positioned opposite the second opening.

13. In paragraph 10, A vacuum cleaner in which at least one bypass hole is formed.

14. In paragraph 1, A vacuum cleaner in which the cross-section of the roller is a trapezoidal shape that becomes narrower toward the center of the base.

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