Pre-filter for cleaner

Abstract

The present invention relates to a pre-filter for a cleaner, the pre-filter comprising: a cylindrical filter body; a filter part coupled to the inner side of the filter body and filtering foreign substances; and a filter frame extending radially inward from the upper end of the filter body and supporting the filter part, such that, if a user does not install the pre-filter, a dust separation part cannot be coupled.

Description

Pre-filter for vacuum cleaner

[0001] The present invention relates to a pre-filter for a vacuum cleaner, and more specifically, to a pre-filter for a vacuum cleaner that can be easily detached from the vacuum cleaner for cleaning and can be immediately recognized by the user when not attached to the vacuum cleaner.

[0002]

[0003] Generally, a vacuum cleaner is a home appliance that uses electricity to suck up air to collect small debris or dust and fill it into a dust bin inside the product, and it is commonly referred to as a vacuum cleaner.

[0004] These vacuum cleaners can be classified into manual vacuum cleaners, which are used for cleaning while the user moves the vacuum cleaner directly, and automatic vacuum cleaners, which are used for cleaning while driving on their own. Manual vacuum cleaners can be classified into canister-type vacuum cleaners, upright vacuum cleaners, handheld vacuum cleaners, and stick-type vacuum cleaners depending on the form of the vacuum cleaner.

[0005] In the past, canister-type vacuum cleaners were widely used for household use, but recently, handheld and stick vacuum cleaners, which offer improved convenience by providing the dust bin and the main body as a single unit, are becoming increasingly popular.

[0006] Canister-type vacuum cleaners have the main body and the suction nozzle connected by a rubber hose or pipe, and depending on the situation, a brush can be attached to the nozzle for use.

[0007] Hand vacuum cleaners maximize portability; however, because they are lightweight but short, the cleaning area may be limited when cleaning while sitting. Therefore, they are used to clean localized areas such as desks, sofas, or inside cars.

[0008] Stick vacuums can be used while standing, allowing for cleaning without bending over. This makes them advantageous for cleaning large areas. While handheld vacuums are used for cleaning narrow spaces, stick vacuums can clean larger areas and reach high places that are out of reach. Recently, stick vacuums are also being offered in modular types, allowing users to actively switch between different types of vacuums for various tasks.

[0009] The main body of the stick vacuum cleaner is equipped with a suction motor that generates suction force against air containing dust and a dust separation unit utilizing centrifugal separation. Additionally, a pre-filter is provided at the front of the suction motor (at the front of the air flow path) to prevent the sucked-in dust from entering the suction motor. The reason the pre-filter is provided at the front of the suction motor is to protect the suction motor from dust or foreign substances. This is because, although dust is separated by the dust separation unit, so-called fine dust or ultrafine dust is not 100% separated.

[0010] Meanwhile, as the operating time of the vacuum cleaner increases, the amount of fine or ultrafine dust accumulated in the pre-filter gradually increases. Furthermore, due to the high temperature resulting from its proximity to the suction motor, an environment is created where bacteria can easily multiply in the pre-filter, thereby requiring easy replacement of the pre-filter.

[0011] In this regard, Korean Registered Patent No. 2072009 discloses a vacuum cleaner with a replaceable pre-filter.

[0012] The above pre-filter is positioned between the cyclone section and the intake motor to filter out foreign substances that have passed through the cyclone section, thereby preventing foreign substances from entering the intake motor.

[0013] However, in the above vacuum cleaner, the pre-filter is connected to the motor housing and the cyclone unit is connected to the dust bin, and the pre-filter and the cyclone unit are not connected to each other.

[0014] Accordingly, there is a limitation in that the user cannot perceive the cyclone unit and dustbin being attached to the vacuum cleaner body housing while the pre-filter is disassembled.

[0015] In addition, there is a problem where foreign matter can enter the suction motor because the user is unaware that the vacuum cleaner is being used without a pre-filter.

[0016] Consequently, the above vacuum cleaner has a problem in that it can cause damage to the suction motor because the user can continue to use it without attaching the pre-filter.

[0017]

[0018] The present invention was created to improve upon the problems of conventional vacuum cleaner pre-filters as described above, and aims to provide a vacuum cleaner pre-filter that allows the user to easily detach, combine, and clean the filter.

[0019] In addition, the purpose is to provide a pre-filter for a vacuum cleaner that allows the user to immediately recognize that the pre-filter has come off when it is not attached to the vacuum cleaner.

[0020] In addition, the purpose is to provide a vacuum cleaner pre-filter that allows the user to immediately recognize that the pre-filter has come loose when using the vacuum cleaner without attaching the pre-filter.

[0021] In addition, the purpose is to provide a pre-filter for a vacuum cleaner that can prevent misassembly.

[0022]

[0023] To achieve the above-mentioned purpose, a vacuum cleaner according to the present invention comprises: a main body housing; a suction part having a passage through which air can flow; a dust separation part for separating dust from air sucked in through the suction part; a suction motor for providing air flow force; and a pre-filter detachably coupled inside the main body housing, disposed between the suction motor and the dust separation part, and detachably coupled to the dust separation part.

[0024] At this time, the pre-filter may include a cylindrical filter body; and a filter part coupled to the inside of the filter body and filtering foreign substances.

[0025] Additionally, the pre-filter may further include a filter frame that is extended from the inner circumferential surface of the filter body and supports the filter portion.

[0026] Specifically, the filter frame is formed to extend radially inward from the top of the filter body and can support the filter portion.

[0027] At this time, the filter frame may include a filter receiving portion that is extended from the inner surface of the filter body and accommodates the filter portion between itself and the inner surface of the filter body.

[0028] Specifically, the filter receiving portion is formed extending from the top of the filter body, is formed in a cylindrical shape facing the filter body, and can accommodate the filter portion between itself and the inner surface of the filter body.

[0029] In addition, the filter frame may include a bridge portion extending from the filter receiving portion toward the dust separation portion.

[0030] At this time, the bridge portion may be formed with multiple extensions extending downward from the bottom of the filter receiving portion, and may extend toward the radial center as it goes downward.

[0031] That is, the bridge portion may be extended along a direction intersecting the axial direction of the filter body.

[0032] At this time, the bridge portion may have reinforcing ribs formed protruding from its inner surface.

[0033] Meanwhile, the filter frame may include a filter support portion formed to be positioned closer to the dust separation portion than the filter receiving portion and having an inner diameter smaller than the inner diameter of the filter receiving portion.

[0034] Meanwhile, the filter body may include a housing coupling part provided on the outer surface and detachably coupled to the main body housing.

[0035] At this time, the housing coupling portion may include a guide rib formed to protrude along the circumferential direction from the outer surface of the filter body.

[0036] In addition, the housing coupling portion may further include a stopper formed to protrude radially outward from the longitudinal end of the guide rib.

[0037] Meanwhile, the filter body may include a cyclone coupling part provided on the outer surface and detachably coupled to the dust separation part.

[0038] Consequently, the filter frame is disposed in the internal space of the filter body, and the filter part can cover the lower part of the filter frame.

[0039] Meanwhile, the filter body may further include a stopping rib formed along the circumferential direction on the outer surface of the filter body, which is disposed between the housing coupling part and the cyclone coupling part.

[0040] Meanwhile, the main body housing may include a motor housing in which at least a portion of the suction motor is accommodated inside and the pre-filter is detachably coupled to the outer surface.

[0041] At this time, the motor housing may have an air inlet formed therein through which air that has passed through the dust separation unit is introduced.

[0042] Meanwhile, the dust separation unit may include a cyclone unit in which foreign substances in the air are separated by cyclone flow; and a filter coupling unit disposed downstream of the cyclone unit and detachably coupled to the pre-filter.

[0043] Accordingly, the above pre-filter can be coupled to the main body housing while coupled to the dust separation unit.

[0044] In addition, the dust separation unit may be coupled to the pre-filter when the pre-filter is coupled to the main body housing.

[0045] Meanwhile, the vacuum cleaner of the present invention further comprises a dust bin in which dust separated from the dust separation unit is stored; wherein the dust bin comprises a dust bin body; and a discharge cover that opens and closes the internal space of the dust bin body; and wherein the discharge cover may come into contact with the lower end of the dust separation unit when the pre-filter is coupled to the main body housing and the dust separation unit is coupled to the pre-filter.

[0046] At this time, the dustbin can be detachably coupled to the main body housing.

[0047]

[0048] As described above, according to the pre-filter for a vacuum cleaner of the present invention, the dust bin, the dust separator, and the pre-filter are detachably coupled to the main body housing of the vacuum cleaner, thereby enabling the user to easily detach and attach the pre-filter for cleaning.

[0049] In addition, a pre-filter is coupled to the motor housing, and a dust separator is coupled to the pre-filter, so that if the user does not combine the pre-filter, the dust separator cannot be combined.

[0050] Accordingly, this has the effect of allowing the user to immediately realize that the pre-filter combination has been omitted.

[0051] In addition, if the user uses the vacuum cleaner without attaching the pre-filter, air flows in while the dust separator is not supported between the motor housing and the dust bin's discharge cover, causing the dust separator to shake and hit the dust bin.

[0052] Accordingly, this has the effect of allowing the user to immediately realize that the pre-filter has been omitted and stop using the vacuum cleaner.

[0053] In addition, the pre-filter is equipped with a guide structure coupled to the motor housing and a guide structure coupled to the dust separator, which has the effect of preventing incorrect assembly when the user assembles the pre-filter.

[0054]

[0055] FIG. 1 is a perspective view for explaining a vacuum cleaner according to the present invention.

[0056] Figure 2 is a cross-sectional view of Figure 1.

[0057] FIG. 3 is a perspective view illustrating a pre-filter in a vacuum cleaner according to a first embodiment of the present invention.

[0058] Figure 4 is a cross-sectional view of Figure 3.

[0059] Figure 5 is a plan view of Figure 3.

[0060] Fig. 6 is a perspective view of Fig. 3 seen from a different direction.

[0061] FIG. 7 is a diagram illustrating the process of combining a pre-filter and a dust separation unit in a vacuum cleaner according to the first embodiment of the present invention.

[0062] FIG. 8 is a drawing illustrating the state in which a pre-filter and a dust separation unit are combined in a vacuum cleaner according to the first embodiment of the present invention.

[0063] FIG. 9 is a drawing for explaining the process of combining a pre-filter and a dust separation unit with a main body housing in a vacuum cleaner according to the first embodiment of the present invention.

[0064] FIG. 10 is a perspective view illustrating a pre-filter in a vacuum cleaner according to a second embodiment of the present invention.

[0065] FIG. 11 is a perspective view illustrating a pre-filter in a vacuum cleaner according to a third embodiment of the present invention.

[0066]

[0067] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0068] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. This is not intended to limit the present invention to specific embodiments, and should be interpreted to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0069] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0070] Unless otherwise defined, all terms used herein, including technical or scientific terms, may have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries may be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and may not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0071]

[0072] FIG. 1 discloses a perspective view for explaining a vacuum cleaner according to the present invention, and FIG. 2 discloses a cross-sectional view of FIG. 1.

[0073] In this specification, "floor surface" can be understood to mean not only the floor surface of a living room or room, but also a clean surface such as a carpet.

[0074] Referring to Figures 1 and 2, the structure of the vacuum cleaner (1) is described as follows.

[0075] The vacuum cleaner (1) may refer to a vacuum cleaner that is manually operated by the user. For example, the vacuum cleaner (1) may refer to a handheld vacuum cleaner or a stick vacuum cleaner.

[0076] Meanwhile, in one embodiment of the present invention, the direction of the vacuum cleaner (1) can be defined based on when the bottom surface (lower side) of the dust bin (170) and the battery housing (180) are placed on the ground.

[0077] At this time, the front may refer to the direction in which the suction part (120) is positioned relative to the suction motor (140), and the rear may refer to the direction in which the handle (160) is positioned relative to the suction motor (140). Also, when looking at the suction part (120) from the suction motor (140), the direction positioned to the right may be called the right, and the direction positioned to the left may be called the left. Furthermore, in one embodiment of the present invention, the upper and lower sides may be defined along a direction perpendicular to the ground when the bottom surface (lower side) of the dust bin (170) and the battery housing (180) are placed on the ground.

[0078] The vacuum cleaner (1) may include a vacuum cleaner body (100). The vacuum cleaner body (100) may include a body housing (110), a suction part (120), a dust separation part (130), a suction motor (140), an air discharge cover (150), and a handle (160).

[0079] The main body housing (110) can form the exterior of the vacuum cleaner (1). Specifically, the main body housing (110) includes an outer housing (111). The outer housing (111) can provide a space to accommodate a suction motor (140) and a filter unit (200, 300) inside. The outer housing (111) can be configured in a shape similar to a cylinder.

[0080] The main body housing (110) includes a motor housing (112). The motor housing (112) may be placed inside the outer housing (111). The motor housing (112) may accommodate at least a portion of the suction motor (140) inside. For example, the motor housing (112) may be formed in a cylindrical shape overall, with the diameter narrowing towards the bottom. The motor housing (112) may have a passage formed inside through which air can flow. For example, the bottom of the motor housing (112) may have an air inlet formed at the radial center through which air can be introduced.

[0081] The motor housing (112) can be positioned on the side where air is introduced (upstream side) based on the airflow. A bracket of the suction motor (140) can be attached to the motor housing (112). An impeller of the suction motor (140) can be accommodated inside the motor housing (112).

[0082] Therefore, when the suction motor (140) is operated, air that has passed through the dust separation unit (130) can flow into the interior of the motor housing (112) and flow to the suction motor (140).

[0083] Additionally, a pre-filter (200) may be attached to the outside of the motor housing (112). Specifically, the pre-filter (200) may come into contact with at least a portion of the outer surface of the motor housing (112). At this time, the pre-filter (200) may be equipped with a sealer (240) to seal the space between it and the motor housing (112).

[0084] Meanwhile, the main body housing (110) may further include a filter coupling portion (113). The filter coupling portion (113) may be positioned between the outer housing (111) and the motor housing (112). The filter coupling portion (113) may be detachably coupled to a pre-filter (200).

[0085] For example, the filter coupling portion (113) may be formed in a cylindrical shape, and its upper end may be connected to the motor housing (112). At this time, a pre-filter (200) may be coupled to the inner circumference of the filter coupling portion (113). That is, the pre-filter (200) may be coupled between the motor housing (112) and the filter coupling portion (113).

[0086] At this time, a guide groove (not shown) may be formed on the inner surface of the filter coupling part (113) to be detachably coupled with the pre-filter (200). The guide groove may be formed corresponding to the shape of the guide rib (211a) and stopper (211b) formed on the pre-filter (200). For example, the guide groove may be a groove formed along the circumferential direction on the inner surface of the filter coupling part (113). At this time, the width of the guide groove may be formed as a recess with the same size as the guide rib (211a) and stopper (211b).

[0087] With this configuration, the user can combine the main body housing (110) and the pre-filter (200) with just a simple motion of aligning the guide rib (211a) with the guide groove, pushing the pre-filter (200) in, and then rotating it.

[0088] The suction part (120) may protrude outward from the main body housing (110). For example, the suction part (120) may be formed in a cylindrical shape with an open interior. The suction part (120) may be coupled with an extension tube (not shown). Thus, the suction part (120) may provide a passage (hereinafter referred to as a ‘suction passage’) through which air containing dust can flow.

[0089] The dust separation unit (130) can be connected to the suction unit (120). The dust separation unit (130) can separate dust sucked into the interior through the suction unit (120). The space inside the dust separation unit (130) can be connected to the space inside the dust bin (170).

[0090] For example, the dust separation unit (130) may be equipped with at least one cyclone unit (131) capable of separating dust by cyclone flow. Additionally, the space inside the dust separation unit (130) may be in communication with the suction path. Accordingly, air and dust sucked in through the suction unit (120) flow spirally along the inner surface of the dust separation unit (130). Thus, cyclone flow can occur in the space inside the dust separation unit (130).

[0091] The dust separation unit (130) is connected to the suction unit (120) and is configured to apply the principle of a dust collector using centrifugal force to separate dust sucked into the interior of the vacuum cleaner body (100) through the suction unit (120).

[0092] The dust separation unit (130) may further include a secondary cyclone that separates dust again from the air discharged from the cyclone. At this time, the secondary cyclone may be located inside the cyclone unit (131) so that the size of the dust separation unit is minimized. The secondary cyclone may include a plurality of cyclone bodies (131a) arranged in parallel. The air discharged from the cyclone unit (131) may be divided and pass through the plurality of cyclone bodies.

[0093] At this time, the axis of the cyclone flow of the secondary cyclone can also be extended in the vertical direction, and the axis of the cyclone flow of the cyclone section (131) and the axis of the cyclone flow of the secondary cyclone can form a coaxial axis in the vertical direction, which can be collectively referred to as the axis of the cyclone flow of the dust separation section (130).

[0094] Meanwhile, a cyclone exhaust section (131b) may be disposed on the upper side of the cyclone body (131a). The cyclone exhaust section (131b) may be coupled to the upper side of the cyclone body (131a) to support the cyclone body (131a). For example, the cyclone exhaust section (131b) may be formed in the shape of a disc having a predetermined thickness to form a flow path on the lower side of the suction motor (140). Additionally, a mesh net (132) may be coupled to the cyclone exhaust section (131b).

[0095] A passageway may be formed in the cyclone exhaust section (131b) through which air passing through the cyclone body (131a) can flow. For example, a plurality of exhaust holes may be formed in the cyclone exhaust section (131b) at positions facing the plurality of cyclone bodies (131a). Thus, air passing through the cyclone body (131a) can flow through the exhaust holes toward the intake motor (140).

[0096] Meanwhile, the dust separation unit (130) may be surrounded by a mesh net (132). The mesh net (132) may serve to prevent relatively large foreign substances among the foreign substances contained in the air passing through the suction unit (120) from entering the dust separation unit (130). That is, the mesh net (132) may be formed in a cylindrical shape, and a plurality of holes may be formed along the outer surface.

[0097] Meanwhile, the dust separation unit (130) in the present invention may further include a filter coupling unit (133). The filter coupling unit (133) is positioned downstream of the cyclone unit (131) and can be detachably coupled to the pre-filter (200).

[0098] For example, the filter coupling portion (133) is formed in a cylindrical shape, a cyclone exhaust portion (131b) is positioned on the axial lower side, and a pre-filter (200) can be coupled on the axial upper side.

[0099] At this time, a guide groove (not shown) may be formed on the inner surface of the filter coupling part (133) to be detachably coupled with the pre-filter (200). The guide groove may be formed corresponding to the shape of the guide protrusion (212a) and stopper (212b) formed on the pre-filter (200). For example, the guide groove may be a groove formed along the axial direction on the inner surface of the filter coupling part (133). At this time, the width of the guide groove may be formed as a recess with the same size as the guide protrusion (212a) and stopper (212b).

[0100] With this configuration, the dust separation part (130) and the pre-filter (200) can be combined with just a simple action of the user pushing the pre-filter (200) into the inner circumference of the filter coupling part (133).

[0101] In addition, the dust separation unit (130) and the pre-filter (200) can be separated by a simple action in which the user pulls the pre-filter (200) and the dust separation unit (130) in opposite directions.

[0102] Meanwhile, the dust separation unit (130) may include a dust collection guide unit (134). The dust collection guide unit (134) is positioned between the cyclone unit (131) and the bottom surface of the dust container (170) and can guide the movement of dust separated through the cyclone unit (131).

[0103] The dust collection guide section (134) can be formed in a shape capable of collecting fine dust falling through the cyclone section (131). Specifically, the dust collection guide section (134) can be formed with a larger diameter at the top and a smaller diameter at the bottom, and the inner surface can be formed to be curved. For example, the dust collection guide section (134) can be formed in the shape of a funnel or a horn.

[0104] With this configuration, the dust collection guide section (134) can collect dust that has passed through the cyclone section (131) to the lower side of the dust container (170).

[0105] Meanwhile, the lower end of the dust collection guide (134) may come into contact with the discharge cover (172) of the dust container (170). Therefore, when the discharge cover (172) is closed, dust collected downward along the dust collection guide (134) cannot exit to the outside of the dust collection guide (134).

[0106] At this time, according to the embodiment, a sealer is provided at the bottom of the dust collection guide (134) to block dust from going out to the outside of the dust collection guide (134).

[0107] The suction motor (140) can generate a suction force to draw in air. The suction motor (140) may include a motor shaft and an impeller that rotates according to the rotation of the motor shaft. Thus, air flow force can be generated according to the rotation of the impeller. As a result, the suction motor (140) can generate a suction force by rotation.

[0108] The suction motor (140) can be accommodated within the main body housing (110). Specifically, the suction motor (140) can be accommodated in a motor housing (112) formed within the main body housing (110). For example, the suction motor (140) can be provided in a shape similar to a cylinder and accommodated within the motor housing (112).

[0109] Meanwhile, in this embodiment, a virtual suction motor axis line can be formed by extending the rotation axis of the suction motor (140).

[0110] An air exhaust cover (150) may be positioned on one side in the axial direction of the main body housing (110). The air exhaust cover (150) may be provided to open and close the internal space of the main body housing (110). For example, the air exhaust cover (150) may be hinge-coupled to the main body housing (110).

[0111] A display unit (not shown) may be placed on the air exhaust cover (150). For example, a display unit (not shown) may be placed on the upper surface of the air exhaust cover (150).

[0112] A printed circuit board (not shown) for controlling a display unit (not shown) may be provided inside the air exhaust cover (150).

[0113] An air outlet (151) may be formed in the air discharge cover (150) to discharge air sucked in by the suction force of the suction motor (140).

[0114] A flow guide may be placed in the air discharge cover (150). The flow guide may guide the flow of air discharged through the air outlet (151).

[0115] Meanwhile, a passageway may be formed within the main body housing (110) through which air flowing inside the dust bin (170) is discharged. Specifically, it may include a passageway that guides air to flow from the dust separation unit (130) to the suction motor (140), and a passageway that guides air passing through the suction motor (140) to flow to the air outlet (151).

[0116] Additionally, a pre-filter (200) may be placed in the path connecting the dust separation unit (130) to the suction motor (140), and a HEPA filter (300) may be placed in the path connecting the suction motor (140) to the air outlet (151). The pre-filter (200) may refer to a filter that filters out relatively large foreign substances (dust), such as hair, lint, and fur. The HEPA filter (300) may refer to a filter that purifies relatively small fine dust.

[0117] Meanwhile, in a vacuum cleaner (1) according to one embodiment of the present invention, the pre-filter (200) may be positioned to cover the upper side of the cyclone section (131). With such a configuration, the path of air flow can be minimized. Additionally, the surface area through which air passes through the pre-filter (200) can be increased during the process of air flow. Therefore, according to the present invention, there is an advantage of maximizing the effect of filtering foreign substances while minimizing flow loss.

[0118] The structure and arrangement of the pre-filter (200) will be described later.

[0119] The handle (160) can be grasped by a user. The handle (160) can be positioned behind the suction motor (140). For example, the handle (160) can be formed in a shape similar to a cylinder. Alternatively, the handle (160) can be formed in a curved cylinder shape. The handle (160) can be positioned at a predetermined angle with respect to the main body housing (110), the suction motor (140), or the dust separator (130).

[0120] The handle (160) may include a gripping portion formed in a column shape for the user to grip, a first extension portion connected to one end in the longitudinal direction (axial direction) of the gripping portion and extended toward the suction motor (140), and a second extension portion connected to the other end in the longitudinal direction (axial direction) of the gripping portion and extended toward the dust bin (170).

[0121] The upper surface of the handle (160) can form part of the upper surface of the vacuum cleaner (1). This prevents a component of the vacuum cleaner (1) from coming into contact with the user's arm when the user grips the handle (160).

[0122] The first extension may extend from the gripping portion toward the main body housing (110) or the suction motor (140). At least a portion of the first extension may extend in a horizontal direction.

[0123] The second extension may extend from the gripping portion toward the dustbin (170). At least a portion of the second extension may extend in a horizontal direction.

[0124] An operating unit may be positioned on the handle (160). The operating unit may be positioned on an inclined surface formed in the upper area of ​​the handle (160). The user can input a command to operate or stop the vacuum cleaner (1) through the operating unit.

[0125] The vacuum cleaner (1) may include a dust bin (170). The dust bin (170) may be connected to a dust separation unit (130). The dust bin (170) may store dust separated from the dust separation unit (130).

[0126] The dustbin (170) may include a dustbin body (171), a discharge cover (172), a dustbin compression lever (173), and a compressor (not shown).

[0127] The dustbin body (171) can provide a space to store dust separated from the dust separation unit (130). For example, the dustbin body (171) can be formed in a shape similar to a cylinder.

[0128] The lower surface (bottom surface) of the dustbin body (171) may be partially open. Additionally, a lower surface extension may be formed on the lower surface (bottom surface) of the dustbin body (171). The lower surface extension may be formed to block a portion of the lower surface of the dustbin body (171).

[0129] The dustbin (170) may include a discharge cover (172). The discharge cover (172) may be placed on the lower side of the dustbin (170).

[0130] The discharge cover (172) may be provided to open and close one end in the longitudinal direction of the dust bin body (171). Specifically, the discharge cover (172) may selectively open and close the lower part of the dust bin (170) that opens downward.

[0131] The discharge cover (172) may include a cover body and a hinge portion. The cover body may be formed to block a portion of the lower surface of the dustbin body. The cover body may rotate downward with respect to the hinge portion. The hinge portion may be positioned adjacent to the battery housing (180). A torsion spring may be provided in the hinge portion. Accordingly, when the discharge cover (172) is separated from the dustbin body (171), the cover body may be supported in a state rotated beyond a predetermined angle with respect to the hinge portion as an axis by the elastic force of the torsion spring.

[0132] The discharge cover (172) can be connected to the dust bin (170) via a hook connection. Meanwhile, the discharge cover (172) can be separated from the dust bin (170) via a connection lever. The connection lever can be positioned at the front of the dust bin. Specifically, the connection lever can be positioned on the outer front side of the dust bin (170). When an external force is applied, the connection lever can elastically deform a hook extending from the cover body to release the hook connection between the cover body and the dust bin body (171).

[0133] When the discharge cover (172) is closed, the lower side of the dust bin (170) can be blocked (sealed) by the discharge cover (172) and the lower extension.

[0134] The dustbin (170) may include a dustbin compression lever (173). The dustbin compression lever (173) may be positioned outside the dustbin (170) or the dust separator (130). The dustbin compression lever (173) may be positioned to move up and down outside the dustbin (170) or the dust separator (130). The dustbin compression lever (173) may be connected to a compressor. When the dustbin compression lever (173) moves downward due to an external force, the compressor may also move downward together.

[0135] This allows for user convenience. The compressor and the dustbin compression lever (173) can be returned to their original positions by means of an elastic member (not shown). Specifically, when an external force applied to the dustbin compression lever (173) is removed, the elastic member can move the dustbin compression lever (173) and the compressor upward.

[0136] The compressor can be placed inside the dustbin body (171). The compressor can move within the internal space of the dustbin body (171). Specifically, the compressor can move up and down within the dustbin body (171).

[0137] Through this, the compressor can compress the dust inside the dust container body (171) downward. Additionally, when the discharge cover (172) is separated from the dust container body (171) and the bottom of the dust container (170) is opened, the compressor can move from the top to the bottom of the dust container (170) to remove foreign substances such as residual dust inside the dust container (170).

[0138] By doing so, the suction power of the vacuum cleaner can be improved by ensuring that no residual dust remains in the dust container (170). In addition, by ensuring that no residual dust remains in the dust container (170), the unpleasant odor caused by the residue can be eliminated.

[0139] The vacuum cleaner (1) may include a battery housing (180). A battery (190) may be accommodated in the battery housing (180). The battery housing (180) may be positioned below the handle (160). For example, the battery housing (180) may have a cuboid shape with an open bottom. The rear of the battery housing (180) may be connected to the handle (160).

[0140] The battery housing (180) may include a receiving portion that opens downward. The battery (190) can be detached through the receiving portion of the battery housing (180).

[0141] The vacuum cleaner (1) may include a battery (190).

[0142] For example, the battery (190) can be detachably coupled to the vacuum cleaner (1). The battery (190) can be detachably coupled to the battery housing (180). For example, the battery (190) can be inserted into the interior of the battery housing (180) from the bottom of the battery housing (180). With such a configuration, the portability of the vacuum cleaner (1) can be improved.

[0143] Alternatively, the battery (190) may be integrally provided inside the battery housing (180). In this case, the lower surface of the battery (190) is not exposed to the outside.

[0144] The battery (190) can supply power to the suction motor (140) of the vacuum cleaner (1). The battery (190) can be placed at the bottom of the handle (160). The battery (190) can be placed at the rear of the dustbin (170).

[0145] According to the embodiment, when the battery (190) is coupled to the battery housing (180), the lower surface of the battery (190) may be exposed to the outside. Since the battery (190) may be placed on the floor when the vacuum cleaner (1) is placed on the floor, the battery (190) can be immediately detached from the battery housing (180). Additionally, since the lower surface of the battery (190) is exposed to the outside and comes into direct contact with the outside air of the battery (190), the cooling performance of the battery (190) may be improved.

[0146] Meanwhile, if the battery (190) is fixed integrally to the battery housing (180), the structure for attaching and detaching the battery (190) and the battery housing (180) can be reduced, so the overall size of the vacuum cleaner (1) can be reduced and it can be made lighter.

[0147] Although not illustrated, the vacuum cleaner (1) may include an extension tube (not illustrated). The extension tube (not illustrated) may be in communication with the vacuum cleaner nozzle. The extension tube (not illustrated) may be in communication with the vacuum cleaner body (100). The extension tube (not illustrated) may be in communication with the suction part (120) of the vacuum cleaner body (100). The extension tube (not illustrated) may be formed in a long cylindrical shape.

[0148] The vacuum cleaner body (100) can be connected to an extension tube (not shown). The vacuum cleaner body (100) can be connected to a vacuum cleaner nozzle through the extension tube (not shown). The vacuum cleaner body (100) can generate suction power through a suction motor (140) and provide suction power to the vacuum cleaner nozzle through the extension tube (not shown). External dust can be introduced into the vacuum cleaner body (100) through the vacuum cleaner nozzle and the extension tube (not shown).

[0149] Additionally, although not illustrated, the vacuum cleaner (1) may include a vacuum cleaner nozzle. The vacuum cleaner nozzle may be connected to an extension tube. Thus, external air can be drawn into the vacuum cleaner body (1) of the vacuum cleaner (1) by passing through the vacuum cleaner nozzle and the extension tube by the suction force generated in the vacuum cleaner body (100) of the vacuum cleaner (1).

[0150]

[0151] Meanwhile, referring to FIG. 2, the airflow in the vacuum cleaner (1) of the present invention is described as follows.

[0152] When the suction motor (140) is operated and air containing dust is sucked into the vacuum cleaner body (100), it passes through the air passage (suction passage) inside the suction section (120) and flows into the dust bin (170). Then, the air flowing into the dust bin (170) flows through a cyclone at least once in the dust separation section (130), causing the dust in the air to collect at the bottom of the dust bin (170), and the air with the separated dust flows toward the suction motor (140).

[0153] At this time, the air flowing through the dust separation unit (130) to the suction motor (140) may contain relatively large foreign substances such as hair, and these can be filtered in the pre-filter (200). Meanwhile, relatively small foreign substances remaining in the air passing through the suction motor (140) can be filtered in the HEPA filter (300). Through this, dust and foreign substances introduced into the vacuum cleaner body (100) can be prevented from being discharged out of the vacuum cleaner body (100).

[0154]

[0155] FIGS. 3 to 6 illustrate drawings for explaining a pre-filter in a vacuum cleaner according to a first embodiment of the present invention.

[0156] Referring to FIGS. 3 to 6, a pre-filter (200) according to the first embodiment of the present invention is described as follows.

[0157] The pre-filter (200) of the present invention may be detachably coupled inside the main body housing (110). Specifically, the pre-filter (200) may be detachably coupled to the motor housing (112) and / or the filter coupling part (113). At this time, the pre-filter (200) may be positioned between the motor housing (112) and the filter coupling part (113).

[0158] Additionally, the pre-filter (200) can be detachably coupled to the dust separation unit (130). Specifically, the pre-filter (200) can be coupled to the filter coupling part (133) of the dust separation unit (130). At this time, the pre-filter (200) can be positioned between the suction motor (140) and the dust separation unit (130) based on the vertical direction of the vacuum cleaner body (100). That is, the pre-filter (200) can be positioned below the suction motor (140), and the dust separation unit (130) can be positioned below the pre-filter (200).

[0159] With this configuration, when the user separates the pre-filter (200) and does not reattach the pre-filter (200), the dust separation unit (130) can be prevented from being attached to the main body housing (110).

[0160] Therefore, according to the present invention, there is an effect that allows the user to immediately recognize that the pre-filter (200) is missing.

[0161] Meanwhile, the pre-filter (200) includes a filter body (210), a filter section (220), a filter frame (230), and a sealer (240). Specifically, the filter frame (230) may be formed to extend inwardly into the filter body (210), and the filter section (220) may be arranged to cover one side of the filter frame (230). Additionally, the sealer (240) may be placed at the other end of the filter frame (230).

[0162] Here, the pre-filter (200) can be defined based on the direction in which it is coupled to the vacuum cleaner body (100). Accordingly, a sealer (240) can be placed on the top of the filter frame (230), and a filter section (220) can be placed on the lower side of the filter frame (230).

[0163] The filter body (210) can form the exterior of the pre-filter (200). For example, the filter body (210) can be formed in a cylindrical shape, and a filter section (220) and a filter frame (230) can be disposed inside. Additionally, when the suction motor (140) is operated while the filter body (210) is coupled to the main body housing (110), air can pass through the internal space of the filter body (210).

[0164] The filter body (210) includes a housing coupling portion (211) and a cyclone coupling portion (212). The housing coupling portion (211) and the cyclone coupling portion (212) may be provided on the outer surface of the filter body (210). At this time, the housing coupling portion (211) may be positioned above the cyclone coupling portion (212).

[0165] The housing coupling portion (211) can be detachably coupled to the main body housing (110). Specifically, the housing coupling portion (211) can be detachably coupled to the inner circumference of the filter coupling portion (113).

[0166] The housing joint (211) includes a guide rib (211a) and a stopper (211b).

[0167] The guide rib (211a) may be formed to protrude along the circumferential direction from the outer surface of the filter body (210). At this time, the guide rib (211a) may be formed in a shape in which the width gradually increases from one end in the longitudinal direction. Through this, there is an advantage that the user can easily attach the pre-filter (200) to the main body housing (110) with only a simple motion of gripping and rotating the filter body (210).

[0168] Additionally, the guide rib (211a) may have an uneven height protruding from the outer surface of the filter body (210). For example, the guide rib (211a) may be formed such that the height on one side in the longitudinal direction is higher than the height on the other side.

[0169] The stopper (211b) may be formed to protrude radially outward from the other end in the longitudinal direction of the guide rib (211a). At this time, the stopper (211b) may be formed to protrude from a lower portion of the guide rib (211a). Through this, the stopper (211b) can form a large height difference with the guide rib (211a). Therefore, when the user rotates the pre-filter (200), there is an effect of being able to sense by touch that the stopper (211b) has reached the correct position.

[0170] The cyclone coupling part (212) can be detachably coupled to the dust separation part (130). Specifically, the cyclone coupling part (212) can be detachably coupled to the inner circumference of the filter coupling part (133).

[0171] The cyclone coupling part (212) includes a guide protrusion (212a) and a stopper (212b).

[0172] The guide protrusion (212a) may be formed to protrude from the outer surface of the filter body (210). For example, the guide protrusion (212a) may be formed to protrude in a rib shape along the circumferential direction. In this case, the guide protrusion (212a) may be formed in a shape in which the width gradually increases from one end in the longitudinal direction. Through this, there is an advantage that the user can easily attach the pre-filter (200) to the dust separation unit (130) with only a simple motion of gripping and rotating the filter body (210).

[0173] Additionally, the guide protrusion (212a) may have an uneven height protruding from the outer surface of the filter body (210). For example, the guide protrusion (212a) may be formed such that the height on one side in the longitudinal direction is higher than the height on the other side.

[0174] The stopper (212b) may be formed to protrude radially outward from the other end in the longitudinal direction of the guide protrusion (212a). At this time, the stopper (212b) may be formed to protrude from a lower portion of the guide protrusion (212a). Through this, the stopper (212b) can be formed with a greater height difference from the guide protrusion (212a). Therefore, when the user rotates the pre-filter (200), there is an effect of being able to sense by touch that the stopper (212b) has reached the correct position.

[0175] Meanwhile, the filter body (210) of the present invention may further include a stopping rib (213). The stopping rib (213) may be formed to protrude along the circumferential direction on the outer surface of the filter body (210).

[0176] The outer diameter of the stopping rib (213) may be larger than the inner diameter of the filter coupling portion (133) of the dust separation portion. Additionally, the outer diameter of the stopping rib (213) may be larger than the inner diameter of the filter coupling portion (113) of the main body housing.

[0177] Accordingly, the stopping rib (213) can form a boundary between the housing coupling portion (211) and the cyclone coupling portion (212). That is, when the pre-filter (200) is coupled with the main body housing (110) or the dust separation portion (130), the lower end of the filter coupling portion (113) of the main body housing or the upper end of the filter coupling portion (133) of the dust separation portion can be caught and supported by the stopping rib (213).

[0178] In addition, when the user attaches the pre-filter (200), the pre-filter (200) can be pushed into the main body housing (110) or dust separation part (130) by aligning it with the position of the stopping rib (213), thus providing convenience.

[0179] The filter section (220) can be coupled to the inside of the filter body (210). Specifically, the filter section (220) is coupled to the inside of the filter body (210) and is positioned to cover the lower side of the filter frame (230) so as to be spread out over the internal space of the filter body (210). For example, the filter section (220) may have a radial shape, and may have a shape in which the diameter decreases from the top to the bottom.

[0180] The filter section (220) may be composed of a material capable of filtering foreign substances from flowing air. Accordingly, the filter section (220) can filter foreign substances from the air passing through the internal space of the filter body (210) from the dust separation section (130).

[0181] Consequently, a filter frame (230) is placed in the internal space of the filter body (210), and a filter section (220) can cover the lower part of the filter frame (230).

[0182] The filter frame (230) is formed to extend from the inner circumference of the filter body (210) and can support the filter portion (220). Specifically, the filter frame (230) is formed to extend radially inward from the top of the filter body (210) and can support the filter portion (220) by being coupled thereto.

[0183] The filter frame (230) includes a filter receiving portion (231), a bridge portion (232), and a filter support portion (233). At this time, the filter receiving portion (231) is formed as an extension from the filter body (210), the bridge portion (232) is formed as a plurality of extensions from the filter receiving portion (231), and the filter support portion (233) may be formed to connect the plurality of bridge portions (232).

[0184] The filter receiving portion (231) is formed extending from the inner surface of the filter body (210) and can accommodate a filter portion (220) between it and the inner surface of the filter body (210).

[0185] Specifically, the filter receiving portion (231) is formed extending from the top of the filter body (210) and is formed in a cylindrical shape facing the filter body (210), and can accommodate a filter portion (220) between it and the inner surface of the filter body (210). At this time, the axial height of the filter receiving portion (231) may be smaller than the axial height of the filter body (210).

[0186] With this configuration, the filter portion (220) can be supported by being sandwiched between the inner surface of the filter body (210) and the outer surface of the filter receiving portion (231).

[0187] The bridge portion (232) can connect the filter receiving portion (231) and the filter support portion (233). One end of the bridge portion (232) in the longitudinal direction is connected to the filter receiving portion (231), and the other end in the longitudinal direction is connected to the filter support portion (233).

[0188] The bridge portion (232) may be formed to extend downward from the filter receiving portion (231). That is, the bridge portion (232) may be formed to extend from the filter receiving portion (231) toward the dust separation portion (130).

[0189] Specifically, the bridge portion (232) is formed to extend downward from the bottom of the filter receiving portion (231), and may extend toward the radial center as it extends downward. That is, the bridge portion (232) may extend along a direction that intersects the axial direction of the filter body (210). Accordingly, the multiple bridge portions (232) may become closer to each other as they extend downward. At this time, the bridge portion (232) may be formed in a bent shape with a predetermined curvature.

[0190] Meanwhile, a reinforcing rib (232a) may be formed protruding from the inner surface of the bridge portion (232). The reinforcing rib (232a) can reinforce the thickness of the bridge portion (232) to absorb external shocks and strengthen the force supporting the filter portion (220).

[0191] The filter support (233) can support the filter section (220). The filter support (233) can support the lower part of the filter section (220).

[0192] The filter support (233) may be positioned closer to the dust separation section (130) than to the filter receiving section (231). The filter support (233) may be positioned lower than the filter receiving section (231).

[0193] The filter support portion (233) may be formed in an annular shape. In this case, the inner diameter of the filter support portion (233) may be smaller than the inner diameter of the filter receiving portion (231).

[0194] Accordingly, the filter frame (230) is formed with a larger diameter at the top and a smaller diameter at the bottom, and the bridge portion (232) can be formed in a curved shape. Thus, the filter frame (230) can be formed in a dome shape overall.

[0195] Through this, even if an impact is applied to the filter frame (230), the impact can be dispersed.

[0196] Meanwhile, a reinforcing rib (233a) may be formed protruding from the inner surface of the filter support member (233). The reinforcing rib (233a) can reinforce the thickness of the filter support member (233) to absorb external shocks and strengthen the force supporting the filter member (220). At this time, the reinforcing rib (233a) of the filter support member (233) may be connected to the reinforcing rib (232a) of the bridge member (232).

[0197] Therefore, the filter frame (230) of the present invention can stably support the filter portion (220).

[0198] In addition, there is an effect of minimizing the resistance of the filter section (220) while expanding the area of ​​the filter section (220) within the internal space of the limited filter body (210).

[0199] The sealer (240) can be placed on the top of the filter body (210) or on the top of the filter frame (230). That is, the sealer (240) can be placed at the very top of the pre-filter (200).

[0200] The sealer (240) may be arranged in an annular shape. In this case, the inner diameter of the sealer (240) may be equal to or larger than the inner diameter of the filter receiving portion (231). Accordingly, the sealer (240) may come into contact with the motor housing (112) and / or the filter coupling portion (113) of the main body housing (110).

[0201] Accordingly, the sealer (240) can seal the space between the main body housing (110) and the filter body (210) and / or the filter frame (230).

[0202]

[0203] Meanwhile, FIG. 7 is a drawing illustrating the process of combining a pre-filter and a dust separator in a vacuum cleaner according to the first embodiment of the present invention, FIG. 8 is a drawing illustrating the state of combining a pre-filter and a dust separator in a vacuum cleaner according to the first embodiment of the present invention, and FIG. 9 is a drawing illustrating the process of combining a pre-filter and a dust separator in a vacuum cleaner according to the first embodiment of the present invention to a main body housing.

[0204] Referring to FIGS. 7 to 9, the process of attaching a pre-filter (200) to a vacuum cleaner (1) according to the present invention is described as follows.

[0205] In the vacuum cleaner (1) according to the present invention, the user can combine the pre-filter (200) and the dust separation unit (130), and then combine the pre-filter (200) with the main body housing (110).

[0206] Specifically, the user can insert the cyclone coupling part (212) provided on the outer surface of the pre-filter (200) into the filter coupling part (133) of the dust separation part (130). At this time, the user can insert the guide protrusion (212a) and the stopper (212b) by aligning them with the position of the guide groove (not shown).

[0207] And, the user can push the pre-filter (200) along the axial direction until the stopping rib (213) touches the top of the filter coupling part (133).

[0208] Next, the user can rotate the pre-filter (200) along the circumferential direction so that the guide protrusion (212a) and the stopper (212b) are fitted into the guide groove.

[0209] Accordingly, the pre-filter (200) and the dust separation unit (130) can be combined.

[0210] At this time, the dust bin (170) may be connected to the main body housing (110). In this case, the discharge cover (172) of the dust bin (170) is opened first, and then the pre-filter (200) connected to the dust separator (130) can be pushed toward the main body housing (110).

[0211] The user can insert the housing coupling part (211) between the motor housing (112) and the filter coupling part (113). At this time, the user can insert the guide rib (211a) and the stopper (211b) by aligning them with the position of the guide groove (not shown) formed in the filter coupling part (113).

[0212] And, the user can push the pre-filter (200) along the axial direction until the stopping rib (213) touches the bottom of the filter coupling part (113).

[0213] Next, the user can rotate the pre-filter (200) along the circumferential direction so that the guide rib (211a) and stopper (211b) are fitted into the guide groove.

[0214] Therefore, according to the present invention, there is an effect of preventing misassembly when a user assembles a pre-filter.

[0215]

[0216] Meanwhile, when the dust bin (170) is separated from the main body housing (110), the user can first attach the pre-filter (200) with the dust separation part (130) attached to the main body housing (110), and then attach the dust bin (170). In this case as well, the method of attaching the pre-filter (200) to the main body housing (110) is the same.

[0217] Accordingly, according to the present invention, there is an advantage that the user can easily attach the pre-filter (200) to the dust separation unit (130) and the main body housing (110), respectively.

[0218]

[0219] Meanwhile, if the user attempts to assemble the dust separation unit (130) to the main body housing (110) while omitting the pre-filter (200), the dust separation unit (130) can be pushed between the motor housing (112) and the filter coupling unit (113), but it is not fixed and separates again.

[0220] Accordingly, according to the present invention, if the user does not attach the pre-filter (200), the dust separation unit (130) can be prevented from being attached.

[0221] In addition, it has the effect of allowing the user to immediately realize that the combination of the pre-filter (200) has been omitted.

[0222]

[0223] If the user removes the pre-filter (200), pushes the dust separator (130) into the main body housing (110), and then closes the discharge cover (172), the dust separator (130) is placed on top of the discharge cover (172). In this case, when the user operates the suction motor (140), air flows through the dust separator (130) without being supported between the motor housing (112) and the discharge cover (172), and the dust separator (130) shakes due to the airflow, and in severe cases, the dust separator (130) may hit the dust container (170).

[0224] Accordingly, according to the present invention, the user can immediately recognize that the pre-filter (200) has been omitted and stop using the vacuum cleaner.

[0225]

[0226] Meanwhile, FIGS. 10 and FIGS. 11 each show a perspective view for explaining a pre-filter in a vacuum cleaner according to a second embodiment and a third embodiment of the present invention.

[0227] To avoid repetitive explanations, except for the specific details described in this embodiment, the pre-filters (1200, 2200) of the second and third embodiments of the present invention have the same configuration and effect as the pre-filter (200) according to the first embodiment of the present invention, so they may be used by reference.

[0228] First, the cyclone coupling portion (1212) according to the second embodiment includes a guide protrusion (1212a). The guide protrusion (1212a) may be formed protruding from the outer surface of the filter body (1210). At this time, the guide protrusion (1212a) may be formed along the axial direction on the outer surface of the filter body (1210) and may be formed in a shape having a predetermined width along the circumferential direction. Also, the lower end of the guide protrusion (1212a) may be formed in the shape of an arrow. Furthermore, a groove with a reduced width may be formed near the middle of the axial direction. Accordingly, the guide protrusion (1212a) according to the second embodiment may be formed in a hook shape.

[0229] Accordingly, the guide protrusion (1212a) according to the second embodiment has the advantage that the user can combine the pre-filter (1200) and the dust separation part (130) simply by pushing the pre-filter (1200) into the dust separation part (130) during the combination process.

[0230]

[0231] Additionally, the housing coupling portion (2211) according to the third embodiment may include a guide rib (2211a), a stopper (2211b), and an insertion guide (2211c).

[0232] At this time, the guide rib (2211a) and stopper (2211b) are identical to the guide rib (211a) and stopper (211b) according to the first embodiment of the present invention, so a detailed description is omitted.

[0233] In this embodiment, the insertion guide (2211c) can guide the axial movement of the housing coupling part (2211). The insertion guide (2211c) can form a recessed or protruding area along the axial direction that includes the location where the guide rib (2211a) and the stopper (2211b) are formed on the outer surface of the filter body (2210).

[0234] In addition, a corresponding shape can be formed in the filter coupling portion (113) of the main body housing (110). Accordingly, according to the present embodiment, there is an advantage that the user can easily recognize the coupling position of the housing coupling portion (3211).

[0235]

[0236] Although the present invention has been described in detail through specific embodiments, this is for the purpose of specifically explaining the invention and is not limited thereto. It is evident that modifications or improvements to the present invention are possible by those skilled in the art within the technical scope of the invention.

[0237] All simple variations or modifications of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

Claims

1. Cylindrical filter body; A filter part coupled to the inner side of the filter body and filtering foreign substances; and A filter frame extending radially inward from the top of the filter body and supporting the filter portion; A pre-filter for a vacuum cleaner containing 2. In Paragraph 1, The filter frame above is, A filter receiving portion that extends from the top of the filter body, is formed in a cylindrical shape facing the filter body, and accommodates the filter portion between itself and the inner surface of the filter body; A pre-filter for a vacuum cleaner containing 3. In Paragraph 2, The filter frame above is, A bridge portion extending from the filter receiving portion toward the dust separation portion; A pre-filter for a vacuum cleaner containing 4. In Paragraph 3, The above bridge section is, A pre-filter for a vacuum cleaner characterized by being formed with multiple extensions extending downward from the bottom of the filter receiving portion, and extending toward the radial center as it goes downward.

5. In Paragraph 3, The above bridge section is, A pre-filter for a vacuum cleaner characterized by reinforcing ribs protruding from the inner surface.

6. In Paragraph 3, The above bridge section is, A pre-filter for a vacuum cleaner characterized by extending along a direction intersecting the axial direction of the filter body.

7. In Paragraph 3, The filter frame above is, A filter support portion positioned closer to the dust separation portion than the filter receiving portion and formed to have an inner diameter smaller than the inner diameter of the filter receiving portion; A pre-filter for a vacuum cleaner containing 8. In Paragraph 1, The above filter body is, A housing coupling part provided on the outer surface and coupled to the main body housing of the vacuum cleaner; A pre-filter for a vacuum cleaner containing 9. In Paragraph 8, The above housing coupling part is, Guide ribs formed to protrude along the circumferential direction from the outer surface of the filter body; A pre-filter for a vacuum cleaner containing 10. In Paragraph 9, The above housing coupling part is, A stopper formed to protrude radially outward from the longitudinal end of the above guide rib; A pre-filter for a vacuum cleaner that further includes 11. In Paragraph 1, The above filter body is, A cyclone coupling part provided on the outer surface and detachably coupled to a dust separation part of a vacuum cleaner that separates foreign substances in the air by cyclone flow; A pre-filter for a vacuum cleaner containing 12. In Paragraph 1, A sealer positioned at the top of the filter frame; A pre-filter for a vacuum cleaner that further includes 13. In Paragraph 1, A pre-filter for a vacuum cleaner characterized in that the filter frame is disposed in the internal space of the filter body, and the filter part covers the lower part of the filter frame.

14. In Paragraph 8, The above filter body is, A cyclone coupling part provided on the outer surface and detachably coupled to a dust separation part of a vacuum cleaner that separates foreign substances in the air by cyclone flow; and A stopping rib disposed between the housing coupling portion and the cyclone coupling portion, and formed along the circumferential direction on the outer surface of the filter body; A pre-filter for a vacuum cleaner containing 15. In Paragraph 3, The above bridge section is, A pre-filter for a vacuum cleaner characterized by reinforcing ribs protruding from the inner surface.

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