Suction nozzle of dust collector

Abstract

The present invention relates to a vacuum cleaner nozzle, and more particularly, to a vacuum cleaner nozzle in which a connecting pipe includes a locking part that selectively fixes a fixed steering part to a rotary steering part and has a button and a stopper, the button being actuated by a button actuation member when an angle between a ground surface and the connecting pipe is less than a predetermined angle, and the stopper being actuated by the button actuation member when the angle between the ground surface and the connecting pipe is less than the predetermined angle. The stopper is operated by the action of the button, at least a part of the stopper is inserted into a stopper accommodating part formed in the fixed steering part when the stopper is not operated, and the stopper is led out from the stopper accommodating part when the stopper is operated, so that the suction nozzle cover body does not shake, and the operability can be ensured.

Description

Technical Field

[0001] The present invention relates to a vacuum cleaner nozzle, and more particularly, to a vacuum cleaner nozzle that sucks dust from the ground by rotating two roller brushes. Background Art

[0002] A vacuum cleaner is a device that uses suction force generated by a suction motor installed inside a cleaner body to suck in dust and air, separate the dust from the air, and collect the dust.

[0003] The suction nozzle is the part that comes into contact with the ground and directly draws in dust and air. The suction force generated by the suction motor installed inside the vacuum cleaner body is transmitted to the suction motor, and dust and air are sucked into the suction nozzle through the suction force.

[0004] The suction nozzle is provided with a roller brush (agitator). The roller brush plays a role of scraping dust from the ground or carpet and improving cleaning performance while rotating.

[0005] The vacuum cleaner head can rotate around multiple axes to achieve steering. In the following, the forward direction of the vacuum cleaner head is assumed to be forward and multiple axes are defined. Rolling refers to the situation where the left and right ends of the vacuum cleaner head rotate up and down around the axis in the front-to-back direction as the center. Pitching refers to the situation where the front and rear ends of the vacuum cleaner head rotate up and down around the axis in the left-to-right direction as the center. Yawing refers to the situation where the left and right ends rotate back and forth around the axis in the up-down direction as the center.

[0006] Korean Patent Gazette No. 10-1814568 is proposed as prior art document 1. Prior art document 1 relates to a cleaner head for a vacuum cleaner. Prior art document 1 includes a first debris opening and a second debris opening disposed above the first debris opening. Dust swept by the roller brush is thereby sucked into the cleaner body through the first debris opening or the second debris opening. According to prior art document 1, a pitch axis and a yaw axis are disposed between the cleaner head and the extension tube. The cleaner body can rotate about the pitch axis to change its height, and can rotate about the yaw axis to change its left-right position.

[0007] Typically, to achieve left-right steering, the cleaner head performs either a roll or a tilt rotation. Existing document 1 performs a tilt rotation instead of a roll rotation. While tilting the cleaner head has the advantage of excellent operability, it has the disadvantage of reduced linear performance.

[0008] The cleaner head of the prior art document 1 lacks a mechanism to prevent movement along the tilt axis. Consequently, on uneven surfaces, the cleaner head frequently wobbles. As the cleaner head wobbles, the cleaner loses its ability to move linearly and instead swivels to the left or right. Consequently, the user must perform unnecessary operations to move the cleaner linearly.

[0009] The problem becomes even more severe when the main body of the vacuum cleaner of prior art 1 is laid as flat as possible. When the main body of the vacuum cleaner is upright and the angle between the tilt axis and the ground surface is small, the vacuum cleaner can move forward a certain distance even if the vacuum cleaner head sways due to the weight of the main body. However, as the main body of the vacuum cleaner is laid flat, the angle between the tilt axis and the ground surface increases, and even a slight movement of the vacuum cleaner head will cause the vacuum cleaner head to sway violently around the tilt axis, causing significant inconvenience when cleaning narrow and low gaps.

[0010] U.S. Patent Publication No. 2007-0174994 is cited as Prior Art 2. Prior Art 2 relates to an invention for a barrel-type vacuum cleaner head, disclosing a vacuum cleaner head with pan and tilt functions. Based on Prior Art 2, the invention relates to a vacuum cleaner head that can be folded and fixed about a tilt axis and placed within the main body of the vacuum cleaner, and then unfolded for cleaning.

[0011] However, the prior art 2 is a structure in which the vacuum cleaner head is folded and fixed when the vacuum cleaner is placed after cleaning, and is unfolded and fixed when cleaning is needed. There is no disclosure of a structure for selectively limiting the horizontal or vertical swing of the vacuum cleaner during use. The vacuum cleaner head can only be swung horizontally but not vertically. Even though it has the advantage of excellent straight-line forward performance, it has the disadvantage of poor operability. Summary of the Invention

[0012] Problems to be solved by the invention

[0013] The present invention is made to improve the problems of the conventional vacuum cleaner nozzle as described above, and its object is to provide a vacuum cleaner nozzle that can lay a vacuum cleaner body and a tube connecting the vacuum cleaner body and the vacuum cleaner nozzle close to the ground surface.

[0014] Another object of the present invention is to provide a vacuum cleaner nozzle that can rotate two roller brushes while reducing the required motor output.

[0015] Another object of the present invention is to provide a vacuum cleaner nozzle that can prevent a large load on the motor from being generated due to friction between the roller brush and the floor surface even when the vacuum cleaner nozzle is pressed downward during cleaning.

[0016] In addition, a vacuum cleaner nozzle having an extension tube capable of panning, pitching, and yaw is provided, which can prevent the nozzle cover from unnecessary left and right shaking around the yaw axis when moving straight forward.

[0017] The problems to be solved by the present invention are not limited to the problems described above, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

[0018] Technical solutions to the problem

[0019] In order to achieve the above-mentioned purpose, the vacuum cleaner nozzle of the present invention includes: a nozzle cover body, which is formed with a suction port for air containing dust to flow in; a button action member, which is formed on one side of the nozzle cover body; and a connecting pipe, which is formed with a flow path connected to the suction port. The connecting pipe includes: a rotating steering part, which is rotatably arranged with a rotating axis as the center; a fixed steering part, which is rotatably coupled to the rotating steering part; and a locking part, which selectively fixes the fixed steering part to the rotating steering part. The locking part includes: a button, which is arranged on the rotating steering part and is actuated by the button action member when the angle between the ground surface and the connecting pipe is less than a specified angle; and a stopper, which is actuated by the action of the button, and when not in action, at least a portion of the stopper is inserted into a stopper accommodating part formed in the fixed steering part, and when in action, the stopper is drawn out from the stopper accommodating part.

[0020] The vacuum cleaner nozzle may include: a first roller brush rotatably coupled to the nozzle cover; and a second roller brush rotatably coupled to the nozzle cover. In this case, the suction port may be formed between the first roller brush and the second roller brush. The diameter of the first roller brush may be different from the diameter of the second roller brush. The upper side of the nozzle cover may be inclined at a predetermined angle to the ground surface, based on the contact state of the first and second roller brushes with the ground surface.

[0021] According to the first embodiment, the button can be actuated by applying pressure in a direction intersecting the direction of movement. In this case, the locking portion can be formed with a hole in the button. Furthermore, the locking portion can further include a release hook disposed on the button actuating member and inserted into the hole in the button to cause the button to move.

[0022] According to the second embodiment, the stopper may include: a hinge, which is combined with the rotating steering part and serves as the center axis of rotation; a button-fitting part, which extends radially outward from the hinge of the stopper and is in close contact with the button, and which rotates about the hinge center of the stopper when the button is actuated; and an insertion part, which extends from the hinge of the stopper in a direction different from the direction in which the button-fitting part extends, and is inserted into a groove formed in the fixed steering part when the button is not actuated.

[0023] According to the third embodiment, the locking portion may include a small gear coupled to a gear of at least one of the button and the stopper and transmitting the power of the button to the stopper.

[0024] According to a fourth embodiment, the locking portion may include: a transmission gear that transmits power from the button to the stopper; and a first guide member that protrudes from one side of the transmission gear, is connected to the button, and rotates the transmission gear when the button is actuated. In this case, the locking portion may include a second guide member that protrudes from another side of the transmission gear, is connected to the stopper, and moves the stopper when the transmission gear rotates.

[0025] According to a fifth embodiment, the locking portion may include: a wire connected to the stopper; and a wire reel wound with the wire and applying an external force to the stopper in a direction in which the stopper is drawn out.

[0026] The fixed steering portion may be the third steering portion, and the rotating steering portion may be the second steering portion.

[0027] When the button is actuated, it can be pressed by the button actuating member while being inserted into the rotating steering portion. When the button is actuated, the stopper can be inserted into the rotating steering portion while being drawn out from the groove formed in the fixed steering portion. At this time, the button insertion direction and the stopper insertion direction can be opposite to each other.

[0028] Effects of the Invention

[0029] As described above, the vacuum cleaner nozzle of the present invention can form an inclined surface on the upper side of the nozzle cover by configuring the two roller brushes to have different diameters. This allows the tube to be leveled in the direction of the roller brush with the smaller diameter, thereby lowering the overall height of the vacuum cleaner nozzle and keeping the tube close to the ground surface. Therefore, even if there is low furniture in the space below, the vacuum cleaner nozzle can be pushed deep into the space for cleaning.

[0030] Furthermore, by setting the diameters of the two roller brushes to be different, the torque applied to the roller brush with the smaller diameter can be reduced, thereby reducing the output required by the motor. This has the effect of reducing the amount of power consumed by the vacuum cleaner nozzle.

[0031] When the vacuum cleaner nozzle is pressed downward, the caster and the second roller brush clean the ground surface, thereby reducing the increase in friction between the first roller brush and the ground surface. This has the effect of preventing the motor from generating a large load due to the friction between the first roller brush and the ground surface.

[0032] In addition, there is an advantage in that the straight-line performance of the vacuum cleaner nozzle can be prevented from being reduced by preventing the vacuum cleaner nozzle from shaking freely when the vacuum cleaner nozzle is tilted and swung. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a perspective view for explaining a vacuum cleaner according to an embodiment of the present invention.

[0034] Figure 2 It is a perspective view of a vacuum cleaner nozzle for explaining an embodiment of the present invention.

[0035] Figure 3 yes Figure 1 Bottom view of .

[0036] Figure 4 Is used to illustrate Figure 3 A cross-sectional view showing the location of the connecting pipe joint.

[0037] Figure 5 Is used to illustrate Figure 3 Cross-section of the castor receptacle.

[0038] Figure 6 This figure is used to illustrate the positional relationship between a virtual caster penetration surface, a virtual roller brush penetration surface, and a virtual connection surface of a connection pipe in a vacuum cleaner nozzle according to an embodiment of the present invention.

[0039] Figure 7 This figure is used to illustrate the turning direction of the connecting pipe in the vacuum cleaner nozzle according to one embodiment of the present invention.

[0040] Figure 8 It is a bottom view of a connecting pipe in a vacuum cleaner nozzle for illustrating an embodiment of the present invention.

[0041] Figure 9 It is a partial enlarged view of a locking portion and a connecting pipe fastening portion in a vacuum cleaner nozzle for illustrating an embodiment of the present invention.

[0042] Figure 10 It is a side view for explaining a state in which a locking portion and a connecting pipe fastening portion are combined in a vacuum cleaner nozzle according to an embodiment of the present invention.

[0043] Figure 11a and Figure 11b It is a partial cross-sectional view for illustrating a locking portion and a connecting pipe fastening portion in a vacuum cleaner nozzle according to one embodiment of the present invention.

[0044] Figure 12 It is a partially enlarged view showing the locking portion and the connecting pipe fastening portion of the vacuum cleaner nozzle according to the first embodiment of the present invention.

[0045] Figure 13a and Figure 13b This is a schematic diagram for explaining a locking portion and a connecting pipe fastening portion in a vacuum cleaner nozzle according to a first embodiment of the present invention.

[0046] Figure 14a and Figure 14bThis is a bottom view of a locking portion of a vacuum cleaner nozzle according to a second embodiment of the present invention.

[0047] Figure 15a and Figure 15b This is a bottom view of a locking portion of a vacuum cleaner nozzle according to a third embodiment of the present invention.

[0048] Figure 16a and Figure 16b This is a schematic diagram for explaining a locking portion of a vacuum cleaner nozzle according to a third embodiment of the present invention.

[0049] Figure 17a and Figure 17b This is a bottom view of a locking portion of a vacuum cleaner nozzle according to a fourth embodiment of the present invention.

[0050] Figure 18a and Figure 18b This is a schematic diagram for explaining a locking portion of a vacuum cleaner nozzle according to a fourth embodiment of the present invention.

[0051] Figure 19a and Figure 19b This is a schematic diagram for explaining a locking portion of a vacuum cleaner nozzle according to a fifth embodiment of the present invention. DETAILED DESCRIPTION

[0052] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0053] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the accompanying drawings and described in detail. This does not limit the present invention to any specific embodiment, but rather should be construed as encompassing all modifications, equivalents, and even alternatives within the spirit and technical scope of the present invention.

[0054] Figure 1 : A perspective view of a vacuum cleaner for explaining an embodiment of the present invention is shown in FIG. Figure 2 : A three-dimensional diagram of a vacuum cleaner nozzle for illustrating an embodiment of the present invention is shown in FIG. Figure 3 Shown in Figure 2 Bottom view of Figure 4 : is a cross-sectional view for explaining the position of the connecting pipe joint in the vacuum cleaner nozzle according to one embodiment of the present invention, Figure 5 1 is a cross-sectional view of a caster accommodating portion in a vacuum cleaner nozzle for illustrating an embodiment of the present invention.

[0055] Reference Figures 1 to 5 The vacuum cleaner nozzle 1 of the present invention is described as follows.

[0056] As an example, the vacuum cleaner nozzle 1 of this embodiment can be connected to a handheld vacuum cleaner or a barrel vacuum cleaner for use.

[0057] In addition, the "floor" in this specification can refer not only to the floor of a living room or a room, but also to clean surfaces such as carpets.

[0058] Specifically, the vacuum cleaner nozzle 1 can be detachably connected to the vacuum cleaner body 2 or the extension tube 3. Since the vacuum cleaner nozzle 1 is connected to the vacuum cleaner body 2 or the extension tube 3, the user can use the vacuum cleaner nozzle 1 to clean the floor. In this case, the vacuum cleaner body 2 with the vacuum cleaner nozzle 1 connected can separate dust from the air in a multi-cyclonic manner.

[0059] The vacuum cleaner nozzle 1 can be operated by receiving power from the vacuum cleaner body 2 . Specifically, the vacuum cleaner nozzle 1 can be operated by receiving power from a battery (not shown) provided in the vacuum cleaner body 2 .

[0060] Since the vacuum cleaner main body 2 to which the vacuum cleaner nozzle 1 is connected includes a suction motor (not shown), a suction force generated by the suction motor (not shown) can be applied to the vacuum cleaner nozzle 1 .

[0061] Therefore, in this embodiment, the vacuum cleaner nozzle 1 can suck in foreign matter and air on the ground and guide them into the vacuum cleaner body 2 .

[0062] A vacuum cleaner nozzle 1 according to an embodiment of the present invention includes a nozzle cover 100 , a first roller brush 200 , a second roller brush 300 , and a connecting tube 400 .

[0063] For reference, description of directions used in the present invention is as follows.

[0064] In the present invention, the direction of the vacuum cleaner nozzle 1 can be defined with respect to the suction port 121. Specifically, with respect to the suction port 121, the direction in which the first roller brush 200 is disposed can be referred to as the front of the vacuum cleaner nozzle 1, and with respect to the suction port 121, the direction in which the second roller brush 200 is disposed can be referred to as the rear of the vacuum cleaner nozzle 1. Furthermore, with respect to the state in which the vacuum cleaner nozzle 1 is placed on the ground (surface) (the state in which the first roller brush 200 and the second roller brush 300 are in contact with the ground) as a reference, the direction away from the ground can be referred to as the upper side (upper side), and the direction close to the ground can be referred to as the lower side (lower side).

[0065] The nozzle cover 100 may be mounted with the first roller brush 200 and the second roller brush 300 and may form the appearance of the vacuum cleaner nozzle 1. In addition, a connecting pipe 400 may be connected to the nozzle cover 100.

[0066] The nozzle cover 100 may include an upper side 110 of the nozzle cover 100 coupled to the connecting pipe 400. A connecting pipe coupling portion 130 may be protrudingly formed on the upper side 110. The connecting pipe coupling portion 130 may be hingedly coupled to the connecting pipe 400.

[0067] The upper side surface 110 of the nozzle cover 100 may be formed to be inclined at a predetermined angle to the ground surface, based on the state in which the first and second roller brushes 200 and 300 are in contact with the ground (ground surface).

[0068] Specifically, with the first and second roller brushes 200 and 300 in contact with the ground (ground surface), the upper side 110 may be formed so that the side where the first roller brush 200 is disposed is farther from the ground surface than the other side where the second roller brush 300 is disposed.

[0069] Therefore, according to this embodiment, there is an advantage in that the height of the rear side of the overall height of the nozzle cover body 100 can be shortened. When the height of the rear side is reduced, the connecting pipe 400 hingedly coupled to the nozzle cover body 100 can be rotated toward the rear side of the vacuum cleaner nozzle 1 at a larger angle. In this case, the height from the ground surface to the uppermost end of the connecting pipe 400 can be reduced. As described above, the lower the height from the ground surface to the uppermost end of the connecting pipe 400, the more the vacuum cleaner nozzle can be inserted into a narrow space under furniture or chairs, and the wider the area that can be cleaned.

[0070] The nozzle cover 100 may include a lower side 120 on which a first roller brush 200 and a second roller brush 300 are disposed.

[0071] In this case, the lower side surface 120 may be arranged to face the ground when the nozzle cover 100 is placed on the ground (ground surface).

[0072] The nozzle cover 100 may be formed with a suction port 121. Specifically, the suction port 121 may be formed on the lower side 120 of the nozzle cover 100. The suction port 121 is a space through which air containing dust can flow in. With the above-described configuration, when the suction motor (not shown) of the vacuum cleaner body 2 is activated, dust and air present around the ground surface can be sucked into the flow path of the vacuum cleaner nozzle 1 through the suction port 121.

[0073] A printed circuit board (not shown) for controlling a roller brush motor (not shown) may be provided inside the nozzle cover 100 .

[0074] Furthermore, the nozzle cover 100 may be formed with a flow path that communicates with the suction port 121 and guides the air flowing in from the suction port 121 to the cleaner body 2 .

[0075] The flow path may be disposed inside the nozzle cover 100 , a lower end portion of the flow path may be communicated with the suction port 121 , and an upper end portion of the flow path may be connected to the connecting pipe 400 .

[0076] In this case, the flow path connecting the suction port 121 and the connection pipe 400 can be formed substantially in the vertical direction. With the above configuration, there are advantages in that the path for sucking in air containing dust can be minimized and flow loss can be minimized.

[0077] A caster receiving hole 122 may be formed in the nozzle cover 100. Specifically, the caster receiving hole 122 may be formed in the lower side 120 of the nozzle cover 100. The caster receiving hole 122 may refer to a space that allows at least a portion of the caster 124 to be exposed to the outside.

[0078] The caster receiving hole 122 can be disposed between the first roller brush 200 and the second roller brush 300. Alternatively, the caster receiving holes 122 can be disposed as a pair at a predetermined distance from the left and right ends of the suction port 121. Specifically, the caster receiving holes 122 can be disposed on both left and right sides of the lower side surface 120, centered around the suction port 121.

[0079] With the above-described configuration, the caster receiving hole 122 can dispose the caster 124 between the first roller brush 200 and the second roller brush 300. Therefore, if an external force is applied during cleaning, the caster 124 can support the nozzle cover 100 and apply an excessive external force to the first roller brush 200 and / or the second roller brush 300, thereby having the effect of preventing an increase in the load applied to the roller brush motor (not shown).

[0080] In addition, since there is a distance between the suction port 121 and the caster receiving hole 122 , there is an advantage in that dust flowing toward the suction port 121 can be prevented from flowing into the caster receiving hole 122 .

[0081] The caster receiving hole 122 can be formed to allow the caster 124 to rotate relative to the caster. For example, the caster receiving hole 122 can be formed into a circular or oval hole shape. Therefore, even if the caster receiving portion 123 and the caster 124 rotate about the rotation axis perpendicular to the ground surface, interference with the lower side surface 120 can be prevented.

[0082] The caster accommodating portion 123 may be configured to be rotatably coupled to the caster 124 and rotatable relative to the lower side surface 120 of the nozzle cover 100 .

[0083] The caster accommodating portion 123 can be arranged in the internal space of the nozzle cover 100. That is, the caster accommodating portion 123 can be arranged in the space formed between the lower side surface 120 and the upper side surface 110 of the nozzle cover 100. In this case, the shaft 123 provided in the caster accommodating portion 123 can be rotatably coupled to the nozzle cover 100. The shaft 123a of the caster accommodating portion 123 can be formed in a direction perpendicular to the lower side surface 120. Therefore, based on the situation where the vacuum cleaner nozzle 1 is placed on the ground, the caster accommodating portion 123 can rotate around the rotation axis perpendicular to the ground.

[0084] In addition, the caster accommodating portion 123 can be formed into a shape that can accommodate at least a portion of the caster 124. For example, the caster accommodating portion 123 can be formed with a covering surface 123b formed in a direction perpendicular to the axis 123a (a direction parallel to the lower side surface 120). In addition, the caster accommodating portion 123 can be formed with a side wall surface 123c extending vertically downward from the covering surface 123b. In addition, a caster shaft 123d serving as the rotation axis of the caster 124 can be coupled to the side wall surface 123c. In this case, the caster shaft 123d can be formed in a direction parallel to the extension direction of the lower side surface 120 (a direction parallel to the ground).

[0085] Therefore, according to the present invention, caster accommodating portion 123 can be rotated with the rotation axis perpendicular to the ground as a reference. By this structure, there is an effect that the rolling movement of caster 124 is not restricted in direction.

[0086] Therefore, according to the present invention, not only when the user moves the cleaner nozzle 1 in the front-rear direction, but also when the user moves it in the left-right direction or the diagonal direction, the caster receiving portion 123 can rotate while changing the direction in which the caster 124 can roll.

[0087] As a result, in the present invention, even if the user pushes or pulls the vacuum cleaner nozzle 1 in various directions, the casters 124 can change directions and roll along the ground, thereby having the effect of improving the user's operating force.

[0088] The caster 124 may be rotatably coupled to the caster receiving portion 123 , and may be disposed on the lower side surface 120 and roll along the ground (ground surface).

[0089] The casters 124 may be provided on the lower side 120 and may be provided in a plurality. For example, the casters 124 may be provided as a pair spaced apart in the left-right direction on the lower side 120. In this case, the suction port 121 may be provided between the pair of shafts.

[0090] Each caster 124 may be rotatably coupled to the caster receiving portion 123 via a caster shaft 123 d .

[0091] At least a portion of the caster 124 can be combined with the caster receiving portion 123 and disposed inside the nozzle cover 100 . In addition, at least a portion of the caster 124 can pass through the caster receiving hole 122 and be exposed to the outside of the nozzle cover 100 .

[0092] By the above-mentioned structure, when the vacuum cleaner nozzle 1 is placed on the ground, the casters 124 can contact the ground. Therefore, when the vacuum cleaner nozzle 1 is moved by the user's operation, the friction between the nozzle cover 100 and the ground can be reduced and the mobility of the vacuum cleaner nozzle 1 can be improved.

[0093] On the other hand, a virtual caster penetration surface C may be formed which passes through the rotation centers of the pair of casters and extends in a direction perpendicular to the ground.

[0094] On the other hand, in this embodiment, a foreign matter isolation portion 125 may be further disposed on the periphery of the caster receiving hole 122 .

[0095] The foreign matter barrier 125 can be formed in a shape or material that increases friction. As one example, the foreign matter barrier 125 can be formed into a shape formed by a plurality of small protrusions. As another example, the foreign matter barrier 125 can be formed from a rubber material. Thus, the foreign matter barrier 125 can prevent foreign matter from passing through its surface.

[0096] The foreign matter blocking portion 125 can be disposed on the lower side 120 and can be configured to surround at least a portion of the caster receiving hole 122. For example, the foreign matter blocking portion 125 can be formed in a horseshoe shape that protrudes toward the suction port 121. This configuration can effectively prevent dust that is moved by the rotation of the first and second roller brushes 200 and 300 from flowing into the caster receiving hole 122.

[0097] On the other hand, the connecting pipe joint 130 can be formed to protrude and extend from the upper side surface 110. Specifically, based on the state in which the first and second rolling brushes 200 and 300 are in contact with the ground (ground surface) (the state in which the vacuum cleaner nozzle 1 is placed on the ground), the connecting pipe joint 130 can be formed to protrude and extend from the upper side surface 110 in a direction perpendicular to the ground (perpendicular to the lower side surface 120).

[0098] In particular, the connection pipe coupling portion 130 may be formed to protrude and extend from the inclined surface 113 in a direction perpendicular to the ground (a direction perpendicular to the lower side surface 120 ).

[0099] The connecting pipe coupling portions 130 may be formed in a pair on the upper side surface 110 in a symmetrical shape. Furthermore, the connecting pipe 400 may be rotatably coupled between the pair of connecting pipe coupling portions 130. Specifically, the pair of connecting pipe coupling portions 130 may be hingedly coupled to the connecting pipe 400. That is, each of the pair of connecting pipe coupling portions 130 may be provided with a hinge axis coupled to the connecting pipe 400, and the connecting pipe 400 may rotate (pivot) about the hinge axis.

[0100] At this time, the upper end of the connecting pipe joint 130 can be configured to be farther from the ground surface than the upper side of the nozzle cover 100. That is, when the vacuum cleaner nozzle 1 is placed on the ground, the connecting pipe joint 130 can be configured to be farther from the ground surface than the upper end of the upper side.

[0101] The above-described configuration ensures a sufficient rotation angle for the connecting tube 400. Furthermore, because the upper side 110 is tilted downward toward the second roller brush 300, the connecting tube 400 can be positioned relatively close to the ground (approximately parallel to the ground) when rotating toward the second roller brush 300. This reduces the overall height of the vacuum cleaner nozzle 1, offering the advantage of being able to clean low-profile spaces such as beds and sofas.

[0102] On the other hand, a virtual connecting pipe connection surface P may be formed through which the hinge axis of the hinged connecting pipe 400 and the nozzle cover 100 passes in a direction perpendicular to the ground surface.

[0103] The button action member 140 may be formed on the rear side of the nozzle cover 100 and may contact one side of the connecting pipe 400. Specifically, the button action member 140 is formed to protrude from the rear end of the upper side 110 and may contact and actuate the locking portion 431 provided on the connecting pipe 400.

[0104] The connecting pipe 400 may be provided with a plurality of turning parts and rotate in a plurality of directions. However, with the above-described configuration, the button operation member 140 may restrict the connecting pipe 400 from rotating in a specific direction.

[0105] The first roller brush 200 is provided on the nozzle cover 100 and plays the role of separating foreign matter from the cleaning object. The first roller brush 200 can be arranged in front of the vacuum cleaner nozzle 1. The first roller brush 200 can be rotatably coupled to the nozzle cover 100.

[0106] The first roller brush 200 may be formed in a cylindrical shape and may be arranged along the left-right direction of the nozzle cover 100. That is, the longitudinal direction (axial direction) of the first roller brush 200 may be arranged to intersect the front-back direction of the vacuum cleaner nozzle 1.

[0107] A brush or a member for increasing friction may be provided on the outer circumferential surface of the first roller brush 200 .

[0108] At least one gear may be provided at the first roller brush 200 to receive rotational power from a roller brush motor (not shown).

[0109] The first roller brush 200 rotates to guide external dust and air toward the suction port 121. The first roller brush 200 rotates in a direction such that the outer peripheral surface facing the ground moves toward the suction port 121. In other words, the first roller brush 200 rotates counterclockwise when viewed from the left side of the vacuum cleaner nozzle 1. This configuration allows external dust and air to be guided toward the suction port 121 while rubbing against the first roller brush 200.

[0110] On the other hand, the first roller brush 200 can be replaceably combined with the nozzle cover 100. Therefore, the first roller brush 200 can be replaced for cleaning according to the cleaning environment.

[0111] The second roller brush 300 is provided on the nozzle cover 100 to separate foreign matter from the cleaning object. The second roller brush 300 can be arranged at the rear of the vacuum cleaner nozzle 1. The second roller brush 300 can be rotatably coupled to the nozzle cover 100.

[0112] The second roller brush 300 may be formed in a cylindrical shape and may be arranged along the left-right direction of the nozzle cover 100. That is, the longitudinal direction (axial direction) of the second roller brush 300 may be arranged along a direction intersecting the front-back direction of the vacuum cleaner nozzle 1.

[0113] A brush or a member for increasing friction may be provided on the outer circumferential surface of the second roller brush 300 .

[0114] The second roller brush 300 may be provided with at least one gear to receive rotational power from a roller brush motor (not shown). In this case, the first roller brush 200 and the second roller brush 300 may receive power from a single roller brush motor. As one example, the first roller brush 200 and the second roller brush 300 may be connected by a belt and receive power from the roller brush motor. As another example, the first roller brush 200 and the second roller brush 300 may be connected to each other by at least one gear and receive power from the roller brush motor.

[0115] The second roller brush 300 may rotate to guide external dust and air to the suction port 121. At this time, the second roller brush 300 may rotate in the opposite direction to the first roller brush 200.

[0116] Specifically, the second roller brush 300 can rotate in a direction such that its outer peripheral surface facing the ground moves toward the suction port 121. In other words, when viewing the vacuum cleaner nozzle 1 from the left, the second roller brush 300 can rotate clockwise. This configuration allows external dust and air to rub against the first roller brush 200 while being guided toward the suction port 121.

[0117] With the above-described structure, dust around the suction port 121 can be gathered toward the suction port 121 by the first and second roller brushes 200 and 300 , and can be sucked in by the suction force of the cleaner body 2 , thereby being removed from the floor.

[0118] On the other hand, the second roller brush 300 can be replaceably combined with the nozzle cover 100. Therefore, the second roller brush 300 can be replaced for cleaning according to the cleaning environment.

[0119] In particular, since the first roller brush 200 and the second roller brush 300 of the vacuum cleaner nozzle 1 of the present invention can be replaced, various roller brush combinations can be achieved according to the state of the ground or the cleaning environment, thereby maximizing the cleaning efficiency.

[0120] On the other hand, in the vacuum cleaner nozzle 1 according to the embodiment of the present invention, the diameter of the first roller brush 200 is different from the diameter of the second roller brush 300. Specifically, the diameter of the first roller brush 200 may be greater than the diameter of the second roller brush 300.

[0121] When the diameter of the first roller brush 200 is larger than that of the second roller brush 300, the torque of the second roller brush 300 with a smaller diameter is smaller than that of the first roller brush 200. That is, the rotational power required to rotate the second roller brush 300 may be smaller than the power required to rotate the first roller brush 200.

[0122] Therefore, compared with the case of rotating two roller brushes of the same diameter, when the diameter of the second roller brush 300 is smaller than the diameter of the first roller brush 200 as in the present invention, the motor output required for rotating the two roller brushes is lower.

[0123] Therefore, according to the present invention, the output required by the motor can be reduced while rotating two roller brushes by a roller brush motor (not shown). Therefore, it has the effect of reducing the power consumption of the vacuum cleaner nozzle and also reducing the load of the motor.

[0124] In addition, the diameter of the first roller brush 200 is set to be larger than the diameter of the second roller brush 300, so that the upper side 110 of the nozzle cover 100 covering the upper portions of the first and second roller brushes 200, 300 can be formed with an inclination. That is, when the first and second roller brushes 200, 300 are placed on the ground (the surface), the upper end of the first roller brush 200 is higher than the upper end of the second roller brush 300, creating a height difference in the nozzle cover 100 covering them, and forming an inclination connecting them. That is, the upper side 110 of the nozzle cover 100 of the present invention can be formed with a first roller brush cover portion 111 covering the vertical upper side of the first roller brush 200, a second roller brush cover portion 112 covering the vertical upper side of the second roller brush 300, and an inclined surface 113 connecting the first and second roller brush cover portions 111, 112.

[0125] With this structure, when the connecting pipe 400 is rotated toward the second roller brush 300, the position where the connecting pipe 400 contacts the nozzle cover 100 can be lowered. Therefore, according to the present invention, the connecting pipe 400 can be laid flat close to the ground surface, thereby having the effect of reducing the overall height of the vacuum cleaner nozzle 1.

[0126] on the other hand, Figure 6 2 is a diagram for explaining the positional relationship between a virtual caster penetration surface, a virtual roller brush penetration surface, and a virtual connecting pipe connection surface in a vacuum cleaner nozzle according to an embodiment of the present invention.

[0127] Reference Figure 6 In this embodiment, a virtual roller brush penetrating surface A may be formed through which the rotation axis (rotation center) of the second roller brush 300 passes in a direction perpendicular to the ground (ground surface).

[0128] Hereinafter, the arrangement relationship among the roller brush penetration surface A, the connection pipe connection surface P, and the caster penetration surface C, that is, their effects will be described.

[0129] In the vacuum cleaner nozzle 1 according to an embodiment of the present invention, the connecting pipe connection surface P is disposed between the caster penetration surface C and the roller brush penetration surface A.

[0130] Here, the connecting pipe connection surface P may be a virtual surface extending perpendicularly to the ground surface and at which the connecting pipe joint 130 and the connecting pipe 400 are connected. In other words, with the vacuum cleaner nozzle 1 placed on the ground (floor) as a reference, the connecting pipe connection surface P may be a virtual surface passing through the first steering axis X and extending perpendicularly to the ground surface.

[0131] If the user operates the vacuum cleaner body 2, the user can push or pull the vacuum cleaner body 2 while the extension tube 3 and the connecting tube 400 press or lift the nozzle cover 100. At this time, the user's pressing operation force is transmitted to the nozzle cover 100 through the extension tube 3 and the connecting tube 400, and the nozzle cover 100 can be moved to the ground (ground surface) by the user's operating force.

[0132] At this time, the user's operating force can be applied through the location where the connecting pipe joint 130 and the connecting pipe 400 are connected to each other, and can be applied and transmitted to the nozzle cover 100 in a direction perpendicular to the ground surface along the connecting pipe joint 130. In other words, the connecting pipe connection surface P can refer to the location and direction where the user's operating force is applied.

[0133] On the other hand, the caster through-plane C may be a virtual plane formed perpendicular to the ground surface and passing through the rotation centers of the pair of casters 124. This caster through-plane C may be a virtual plane formed perpendicular to the ground surface and passing through the position where the pair of casters 124 contact the ground (ground surface).

[0134] Therefore, the caster penetration surface C may refer to a position and direction in which the vacuum cleaner nozzle 1 is pressed against the ground by the load of the vacuum cleaner nozzle 1 and the operating force of the user.

[0135] On the other hand, the roller brush penetration surface A may be a virtual surface that passes through the rotation axis of the second roller brush and extends perpendicular to the ground surface. This roller brush penetration surface A may be a virtual surface that passes through the line of contact between the second roller brush 300 and the ground (ground surface) and extends perpendicular to the ground surface.

[0136] Therefore, the roller brush penetration surface A may refer to a position and direction in which the vacuum cleaner nozzle 1 is pressed against the ground by the load of the vacuum cleaner nozzle 1 and the operating force of the user.

[0137] Therefore, since the connection pipe connection surface P is disposed between the caster penetration surface C and the roller brush penetration surface A, a pressing force (operation force) by a user can be applied to the caster 124 and the second roller brush 300 .

[0138] With the above-described configuration, when the vacuum cleaner nozzle 1 is pressed downward by the user's operating force, the caster 124 and the second roller brush 300 can be pressed against the ground surface, thereby relatively reducing the increase in friction between the first roller brush 200 and the ground surface. Therefore, it is possible to prevent the roller brush motor from generating a large load due to friction between the first roller brush 200 and the ground surface.

[0139] On the other hand, when the caster 124 and the second roller brush 300 are pressed toward the ground surface, the second roller brush 300 may receive smaller frictional resistance with the ground surface than the first roller brush 200 .

[0140] Specifically, the first roller brush 200 and the second roller brush 300 receive the same torque from the same roller brush motor. In this case, if the diameter of the first roller brush 200 is larger than the diameter of the second roller brush 300, the torque generated by the friction between the first roller brush 200 and the ground surface can be greater than the torque generated by the friction between the second roller brush 300 and the ground surface.

[0141] For example, when the friction force (F1) between the first roller brush 200 and the ground surface and the friction force (F2) between the second roller brush 300 and the ground surface are the same (F1=F2), since the distance (r1) between the rotation center of the first roller brush 200 and the ground surface is greater than the distance between the rotation center (r2) of the second roller brush 300 and the ground surface (r1>r2), the torque (r1*?*) generated by the friction between the first roller brush 200 and the ground surface is greater than the torque (r2*?*) generated by the friction between the second roller brush 300 and the ground surface.

[0142] Therefore, even under the condition that the first roller brush 200 should stop rotating due to friction with the ground surface, the second roller brush 300 can rotate.

[0143] Therefore, according to the present invention, the diameter of the second roller brush 300 can be made smaller than the diameter of the first roller brush 200, so that the user's operating force can be pressed against the second roller brush 300, thereby rotating the second roller brush 300 even when cleaning a floor with a large friction force such as a mat or carpet. Therefore, the vacuum cleaner nozzle 1 of the present invention can easily move forward or backward even on a floor such as a mat or carpet, and can prevent the roller brush motor from being overloaded.

[0144] Figure 7 FIG2 is a diagram for explaining the turning direction of the connecting pipe in the vacuum cleaner nozzle according to an embodiment of the present invention. Figure 8 FIG. 2 shows a bottom view of a connecting pipe in a vacuum cleaner nozzle for illustrating an embodiment of the present invention. Figure 9 FIG. 2 shows a partial enlarged view of the locking portion and the connecting pipe fastening portion of the vacuum cleaner nozzle for illustrating an embodiment of the present invention. Figure 10 1 is a side view illustrating a state in which a locking portion and a connecting pipe fastening portion of a vacuum cleaner nozzle are coupled together according to an embodiment of the present invention.

[0145] Reference Figures 7 to 10 The connecting pipe 400 according to an embodiment of the present invention is described as follows.

[0146] The connecting pipe 400 forms a flow path communicating with the suction port 121 , and connects the nozzle cover 100 and the extension pipe 3 or connects the nozzle cover 100 and the cleaner body 2 .

[0147] The connecting pipe 400 includes a pipe 410 , a first turning portion 420 , a second turning portion 430 , and a third turning portion 440 .

[0148] The connecting tube 400 has a first turning portion 420, a second turning portion 430, and a third turning portion 440, enabling rolling, pitching, and yawing. Specifically, the connecting tube 400 can pitch about the rotation axis disposed at the front end of the first turning portion 420, can yaw about the rotation axis disposed at the front end of the second turning portion 430, and can yaw about the rotation axis disposed along the length of the third turning portion 440.

[0149] The tube 410 may have a flow path formed therein that communicates with the suction port 121. The tube 410 may be coupled to the nozzle cover 100 and communicate with the flow path inside the nozzle cover 100.

[0150] The tube 410 may be formed of a deformable material. Specifically, the tube 410 may be formed of a bendable material. Therefore, the tube 410 may be bent and deformed according to the rotation of the first turning portion 420, the second turning portion 430, and the third turning portion 440 of the connecting tube 400.

[0151] The first turning portion 420 accommodates at least a portion of the tube 410 therein and is hingedly coupled to the nozzle cover 100 .

[0152] The interior of the first turning portion 420 is formed into a hollow shape for the pipe 410 to pass through. One side of the first turning portion 420 is hingedly connected to the connecting pipe connecting portion 130 , and the other side of the first turning portion 420 is hingedly connected to the second turning portion 430 .

[0153] At this time, the axis about which the first turning portion 420 rotates relative to the connecting pipe coupling portion 130 may be arranged in a direction parallel to the ground (ground surface).

[0154] With the above-described configuration, when the user places the vacuum cleaner nozzle 1 on the ground and lifts or lowers the vacuum cleaner body 2 , the vacuum cleaner body 2 and the connecting pipe 400 can rotate around the hinge axis.

[0155] In addition, the direction of the hinge axis (hereinafter referred to as the 'first steering axis X') of the first steering portion 420 and the connecting pipe coupling portion 130 and the direction of the hinge axis (hereinafter referred to as the 'second steering axis Y') of the first steering portion 420 and the second steering portion 430 can be perpendicular to each other.

[0156] With the above configuration, when the user places the vacuum cleaner nozzle 1 on the ground and moves the vacuum cleaner body 2 in the left-right direction, the vacuum cleaner body 2 connection pipe 400 can rotate (pitching) around the second steering axis.

[0157] The direction in which the first turning portion 420 rotates (pivots) relative to the nozzle cover 100 and the direction in which the second turning portion 430 rotates relative to the first turning portion 420 may intersect with each other. Therefore, in the vacuum cleaner nozzle 1 of the present invention, there is an advantage that the connecting pipe 400 can be bent to various angles by combining the rotation direction of the first turning portion 420 and the rotation direction of the second turning portion 430.

[0158] The second steering portion 430 is hinge-coupled to the first steering portion 420 and rotatably coupled (yawing) to the third steering portion 430 .

[0159] Specifically, the interior of the second turning portion 430 is formed into a hollow shape for the pipe 410 to pass through, one side of the second turning portion 430 is hingedly coupled to the first turning portion 420 , and the other side is rotatably coupled to the third turning portion 440 .

[0160] The second turning portion 430 may be provided with a locking portion 431. The locking portion 431 may be fixedly coupled to the second turning portion 430 and may be inserted into the third turning portion 440 by linear movement. For example, the locking portion 431 may be provided with a plate-shaped stopper 4312 that is inserted into the third turning portion 440 by linear movement.

[0161] The third turning portion 440 is rotatably coupled to the second turning portion 430. For example, the third turning portion 440 may be formed in a tube-like shape, with one inner circumferential surface of the third turning portion 440 receiving and coupling the other end of the second turning portion 430. In this case, a step is formed at the other end of the second turning portion 430 to prevent the second and third turning portions 430 from separating.

[0162] The third steering portion 440 can rotate the other end of the second steering portion 430. The rotation axis of the third steering portion 440 (hereinafter referred to as the 'third steering axis Z') can be perpendicular to the directions of the first steering axis X and the second steering axis Y.

[0163] With the above configuration, when the user places the vacuum cleaner nozzle 1 on the ground and rotates the vacuum cleaner body 2, the third steering portion 440 can rotate (roll). This allows the user to clean the ground by laying the vacuum cleaner body 2 flat while crawling, when cleaning a narrow space where the vacuum cleaner nozzle can enter, such as under a bed or furniture.

[0164] As a result, the connection pipe 400 of the present invention can be rotated along three rotation axes and can be bent at various angles, thereby having the advantage of facilitating user operation.

[0165] The other side of the third deflection portion 440 is detachably coupled to the extension tube 3 or the cleaner body 2 .

[0166] A flow path for air flow is formed inside the third turning portion 440. As an example, the third turning portion 440 may accommodate the tube 410 therein. As another example, a space communicating with the tube 410 may be formed inside the third turning portion 440.

[0167] The third turning portion 440 may include a stopper receiving portion 440 a into which the stopper 4312 is inserted. For example, the stopper receiving portion 440 a may be formed in a square groove shape to receive the plate-shaped stopper 4312 .

[0168] If the stopper 4312 is coupled to the stopper receiving portion 440a, the rotation of the third turning portion 440 relative to the second turning portion 430 is restricted. Thus, the rolling of the extension tube is restricted.

[0169] With the above configuration, even if the user turns the cleaner body 2 at a position where the third steering portion 440 does not need to rotate, the third steering portion 440 does not rotate, and the entire cleaner nozzle 1 rotates.

[0170] Figure 11a and Figure 11b It is a partial cross-sectional view for illustrating a locking portion and a connecting pipe fastening portion in a vacuum cleaner nozzle according to one embodiment of the present invention.

[0171] Reference Figure 9 、 Figure 10 、 Figure 11a and Figure 11b The selective fixing structure of the present invention will be described.

[0172] The vacuum cleaner nozzle includes a locking portion 431 . The locking portion 431 can selectively fix the fixed steering portion 440 to the rotating steering portion 430 .

[0173] The locking portion 431 is a component that selectively secures or releases a portion of the connecting pipe's multiple rotations. Specifically, the connecting pipe can roll, pitch, and yaw. The locking portion 431 restricts roll when the angle between the connecting pipe and the ground is greater than a specified angle, and allows roll when the angle is less than the specified angle.

[0174] The locking portion 431 includes a button 4311 and a stopper 4312 .

[0175] The button 4311 is disposed on the rotation steering portion 430 and is actuated by the button actuating member 140 when the angle between the ground surface and the connecting pipe is equal to or smaller than a predetermined angle.

[0176] For example, the specified angle may be 10 to 15 degrees. In the case where the angle between the ground surface and the connecting pipe is a large angle of more than 15 degrees, the connecting pipe 400 is more operable when it is shaken than when it is shaken. On the contrary, in the case where the angle between the ground surface and the connecting pipe is a small angle of less than 10 degrees, the connecting pipe 400 is more operable when it is shaken than when it is shaken. In addition, if it is assumed that shaking is always possible, there is also the disadvantage that the vacuum cleaner nozzle will shake and sway arbitrarily at a small angle, making it difficult to operate. Therefore, the locking portion 431 limits the shaking of the connecting pipe 400 at a large angle and only makes the connecting pipe 400 shake, and allows the shaking of the connecting pipe 400 at a small angle and improves operability.

[0177] The button 4311 is disposed on the rotation steering portion 430 . At least a portion of the button 4311 protrudes forward of the rotation steering portion 430 .

[0178] Although not shown, an elastic member may be disposed on one side of button 4311. Once the external force is removed from the elastic member after button 4311 is actuated, button 4311 returns to its original position. For example, if the angle between the ground surface and the connecting pipe exceeds a predetermined angle, the external force is removed, and button 4311 re-protrudes forward of the rotational steering unit 430 via the elastic member.

[0179] The stopper 4312 is actuated by the action of the button 4311. When not in action, at least a portion of the stopper 4312 is inserted into the stopper accommodating portion 440a formed in the fixed steering portion 440. When in action, the stopper 4312 is drawn out from the stopper accommodating portion 440a.

[0180] If the stopper 4312 is inserted into the stopper receiving portion 440a, the fixed steering portion 440 is locked to the stopper 4312 and does not rotate relative to the rotating steering portion 430. If the stopper 4312 is pulled out of the stopper receiving portion 440a, the fixed steering portion 440 can rotate relative to the rotating steering portion 430.

[0181] The stopper 4312 is disposed on the rotation steering portion 430 . At least a portion of the stopper 4312 may protrude rearward of the rotation steering portion 430 .

[0182] Although not shown, an elastic member may be disposed on one side of stopper 4312. When the external force is removed from the elastic member after button 4311 is actuated, stopper 4312 returns to its original position. For example, if the angle between the ground surface and the connecting pipe exceeds a predetermined angle, the external force is removed, and due to the elastic member, stopper 4312 protrudes rearward of the rotational steering portion 430 and is re-inserted into stopper receiving portion 440a.

[0183] The vacuum cleaner nozzle includes a button action member 140. The button action member 140 is formed on one side of the nozzle cover.

[0184] The button actuating member 140 is a component that actuates the button 4311. According to the first and fifth embodiments, the button actuating member 140 is actuated by pulling the button 4311 forward. According to the second to fourth embodiments, the button actuating member 140 is actuated by pushing the button 4311 backward.

[0185] When the button 4311 is actuated, the button actuating member 140 is in close contact with the button 4311. When the button 4311 is not actuated, the button actuating member 140 is spaced apart from the button 4311 by a predetermined distance.

[0186] The fixed steering portion 440 may be a third steering portion 440. The third steering portion 440 is selectively fixed, and the connecting pipe 400 can roll or be restricted from rolling according to an angle with the ground surface.

[0187] The rotating steering portion 430 may be a second steering portion 430. Specifically, the nozzle cover is coupled to a first steering portion 420 capable of tilting, a second steering portion 430 capable of vertical rotation is coupled to the first steering portion 420, and a third steering portion 440 capable of panning is coupled to the second steering portion 430. With this configuration, when panning is restricted, tilting and pitching are achieved through the first and second steering portions 430, and when panning is enabled, both are achieved through the first and third steering portions.

[0188] When the button 4311 is actuated, it can be pressed by the button actuating member 140 and inserted into the rotating steering portion 430. When the stopper 4312 is actuated, it can be inserted into the rotating steering portion 430 and drawn out from the groove formed in the fixed steering portion 440.

[0189] The direction in which the button 4311 is inserted and the direction in which the stopper 4312 is inserted may be opposite to each other.

[0190] Reference Figure 11a and Figure 11b , the button 4311 moves backward and is inserted into the interior of the rotating steering portion 430 , and the stopper 4312 moves forward and is inserted into the interior of the rotating steering portion 430 .

[0191] With this configuration, it is possible to minimize the size of the locking portion 431 and to operate the locking portion 431 at a small angle.

[0192] Figure 12 FIG. 1 shows a partial enlarged view of the locking portion and the connecting pipe fastening portion of the vacuum cleaner nozzle according to the first embodiment of the present invention. Figure 13a and Figure 13b 1 is a schematic diagram showing a locking portion and a connecting pipe fastening portion in a vacuum cleaner nozzle for explaining a first embodiment of the present invention.

[0193] Below, refer to Figure 12 、 Figure 13a as well as Figure 13b The locking portion 1431 of the first embodiment will be described.

[0194] The button 14311 is actuated by being pressed in a direction intersecting the moving direction.

[0195] The locking portion 1431 has a hole 14311 a formed in the button 14311 and includes a release hook 14313 .

[0196] The release hook 14313 is disposed on the button actuation member 140 , and is inserted into the hole 14311 a of the button 14311 to move the button 14311 .

[0197] According to the first embodiment, the button 14311 and the stopper 14312 can be formed as one body. Specifically, the stopper 14312 can be arranged behind the button 14311 and can be formed as one body with the button 14311.

[0198] Reference Figure 12 , the hole 14311a of the button 14311 is formed to pass through the button 14311 from top to bottom. Or, Figure 12 Different from that shown in FIG, the button 14311 may also be formed with a groove that is recessed upward from the lower portion and into which the release hook 14313 is inserted.

[0199] The release hook 14313 may be formed to protrude upward on the upper surface of the button actuation member 140. Figure 12 The back of the release hook 14313 can be formed as a vertical surface, and the front can be formed as a forward-downward inclined surface. By forming it into such a shape, the front end of the hole 14311a of the button 14311 can move along the inclined surface of the release hook 14313 and be led out toward the front of the rotation steering portion 430.

[0200] If the connection pipe 400 is displaced from a small angle to a large angle, the button 14311 and the stopper 14312 are reset rearward by the elastic member and inserted into the stopper receiving portion 440 a.

[0201] Figure 14a and Figure 14b 3 is a bottom view of a locking portion of a vacuum cleaner nozzle according to a second embodiment of the present invention.

[0202] Below, refer to Figure 14a and Figure 14b The locking portion 2431 of the second embodiment will be described.

[0203] The stopper 24312 may be composed of a hinge 24312a, a button-fitting portion 24312b, and an inserting portion 24312c.

[0204] The stopper hinge 24312a is coupled to the rotation steering portion 430 and becomes the central axis of rotation.

[0205] The button contact portion 24312b extends radially outward from the stopper hinge 24312a and is in close contact with the button 24311. When the button 24311 is actuated, the button 24312b rotates around the stopper hinge 24312a.

[0206] For example, refer to Figure 14a and Figure 14b The button abutment portion 24312b can be formed by extending from the stopper hinge 24312a downward. When the button 24311 is actuated, the button 24311 pushes the button abutment portion 24312b backward, and the button abutment portion 24312b is Figure 14a and Figure 14b As a reference, rotate counterclockwise.

[0207] The stopper insertion portion 24312c extends from the stopper hinge 24312a in a direction different from the direction in which the button contact portion 24312b extends, and is inserted into a groove formed in the fixed steering portion 440 when the button 24311 is not in operation.

[0208] For example, refer to Figure 14a and Figure 14b The stopper inserting portion 24312c may be formed by extending upward from the stopper hinge 24312a. When the button 24311 is actuated, as the button contacting portion 24312b rotates counterclockwise, the stopper inserting portion 24312c also rotates counterclockwise, and the stopper inserting portion 24312c is drawn out from the stopper accommodating portion 440a.

[0209] If the connecting pipe 400 is displaced from a small angle to a large angle, Figure 14a and Figure 14b As a reference, the stopper 24312 is rotated in the clockwise direction by the elastic member and inserted into the stopper receiving portion 440a.

[0210] Figure 15a and Figure 15b : FIG shows a bottom view of the locking portion of the vacuum cleaner nozzle according to the third embodiment of the present invention. Figure 16a and Figure 16b Detailed description of the locking portion of a vacuum cleaner nozzle according to the third embodiment of the present invention is shown in FIG.

[0211] Below, refer to Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b The locking portion 3431 of the third embodiment will be described.

[0212] The locking portion 3431 includes racks 34311 a and 34312 b and a pinion 34313 .

[0213] The small gear 34313 is coupled to at least one of the button 34311 and the stopper 34312 , and transmits the power of the button 34311 to the stopper 34312 .

[0214] The first pinion 34313a is arranged on one side of the pinion 34313. Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b , the first pinion 34313a can be disposed at the lower portion of the pinion 34313. The first pinion 34313a is engaged with a first rack 34311a formed on the button 34311.

[0215] The first pinion gear insertion groove 34311 c is recessed inward on one side of the button 34311 and is used for inserting the first pinion gear 34313 a .

[0216] Reference Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b The first pinion gear insertion groove 34311c is formed to be recessed forward on the back surface of the button 34311. The rear of the first pinion gear insertion groove 34311c may be formed in an open U-shape.

[0217] The first rack 34311 a is formed on an inner side surface of the button 34311 facing the first pinion 34313 a and is formed on only one of the two surfaces.

[0218] Reference Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b , the first rack 34311a can be formed only on the right inner side surface.

[0219] Alternatively, different from that shown in the accompanying drawings, the first rack 34311a may also be formed only on the inner side surface on the left side. In this case, the pinion 34313 will rotate clockwise.

[0220] The second pinion 34313b is disposed on the other side of the pinion 34313. Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b The second pinion 34313b may be disposed on an upper portion of the pinion 34313. The second pinion 34313b is engaged with a second rack 34312b formed on the stopper 34312.

[0221] The second pinion gear insertion groove 34312c is recessed inward on one side of the stopper 34312 and is for the second pinion gear 34313b to be inserted into.

[0222] Reference Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b The second pinion gear insertion groove 34312c is formed to be recessed rearward on the front side of the stopper 34312. The front side of the second pinion gear insertion groove 34312c may be formed in an open U-shape.

[0223] The second rack 34312 b is formed on an inner side surface of the stopper 34312 facing the second pinion 34313 b , and is formed only on a surface of the two surfaces that does not correspond to the first rack 34311 a .

[0224] Reference Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b , the second rack 34312b can be formed only on the left inner side surface.

[0225] Alternatively, unlike what is shown in the drawings, the second rack 34312b may be formed only on the right inner side surface.

[0226] Reference Figure 15a 、 Figure 15b 、 Figure 16a as well as Figure 16b , describing the operation of the locking portion 3431 of the third embodiment.

[0227] If the connecting tube 400 is displaced to a small angle, the button 34311 is actuated by the button actuating member 140 and moves rearward. If the button 34311 moves rearward, the pinion 34313 rotates counterclockwise via the first rack 34311a and the first pinion 34313a. If the pinion 34313 rotates counterclockwise, the stopper 34312 moves forward via the second pinion 34313b and the second rack 34312b. As the stopper 34312 moves forward, it is drawn out of the stopper accommodating portion 440a, allowing the fixed steering portion 440 to rotate.

[0228] Figure 17a and Figure 17b A diagram showing a locking portion of a vacuum cleaner nozzle according to a fourth embodiment of the present invention as viewed from the bottom, Figure 18a and Figure 18b A schematic diagram illustrating a locking portion of a vacuum cleaner nozzle according to a fourth embodiment of the present invention is shown.

[0229] Below, refer to Figure 17a 、 Figure 17b 、 Figure 18a as well as Figure 18b The locking portion 4431 of the fourth embodiment will be described.

[0230] The locking portion 4431 may include a transmission gear 44313 .

[0231] The transmission gear 44313 can transmit the power of the button 44311 to the stopper 44312.

[0232] The transmission gear 44313 may include a first guide member 44313a and / or a second guide member 44313b.

[0233] The first guide member 44313 a protrudes from one side of the transmission gear 44313 and is connected to the button 44311 , and causes the transmission gear 44313 to rotate when the button 44311 is actuated.

[0234] Reference Figure 17a 、 Figure 17b 、 Figure 18a as well as Figure 18b The first guide member 44313a protrudes downward from the lower surface of the transmission gear 44313. A first slit 44311a is formed in the button 44311. The first guide member 44313a can be inserted into the first slit 44311a and slide.

[0235] The second guide 44313 b protrudes from the other surface of the transmission gear 44313 and is connected to the stopper 44312 , and moves the stopper 44312 if the transmission gear 44313 rotates.

[0236] Reference Figure 17a 、 Figure 17b 、 Figure 18a as well as Figure 18b The second guide member 44313b protrudes upward from the upper surface of the transmission gear 44313. A second slit 44312b is formed in the stopper 44312. The second guide member 44313b can be inserted into the second slit 44312b and slide.

[0237] Reference Figure 17a 、 Figure 17b 、 Figure 18a as well as Figure 18b The operation of the locking portion 4431 of the fourth embodiment will be described.

[0238] If the connecting tube 400 is positioned at a shallow angle, the button 44311 is actuated by the button actuating member 140 and moves rearward. If the button 44311 moves rearward, the first guide member 44313a slides within the first slit 44311a and moves rearward. If the first guide member 44313a moves rearward, the transmission gear 44313 rotates counterclockwise. If the transmission gear 44313 rotates counterclockwise, the second guide member 44313b moves forward. If the second guide member 44313b moves forward, it slides within the second slit 44312b, causing the stop member 44312 to move forward. The stop member 44312 can be drawn out of the stop member accommodating portion 440a while moving forward, allowing the fixed steering portion 440 to rotate.

[0239] Figure 19a and Figure 19b Detailed description of the locking portion of a vacuum cleaner nozzle according to the fifth embodiment of the present invention is shown in FIG.

[0240] Figure 19a and Figure 19b Detailed description of the locking portion of a vacuum cleaner nozzle according to the fifth embodiment of the present invention is shown in FIG.

[0241] Below, refer to Figure 19a and Figure 19b The locking portion 5431 of the fifth embodiment will be described.

[0242] The locking portion 5431 may include a wire 54313 and a wire reel 54314 .

[0243] Wire 54313 is connected to stopper 54312 .

[0244] The wire reel 54314 is wound with the wire 54313 and applies an external force to the stopper 54312 in a direction in which the stopper 54312 is led out.

[0245] The wire reel 54314 can be arranged in front of the stop member 54312.

[0246] The button 54311 secures the stopper 54312 at a large angle and releases the stopper 54312 at a small angle. At a large angle, the button 54311 secures the stopper 54312, which is inserted into the stopper receiving portion 440a, preventing rotation of the fixed steering portion 440. At a small angle, the button 54311 releases the stopper 54312, and under the tension of the wire 54313, the stopper 54312 moves forward and is drawn out of the stopper receiving portion 440a, allowing the fixed steering portion 440 to rotate.

[0247] The present invention has been described in detail above through specific embodiments, but this is only for the purpose of illustrating the present invention in detail and the present invention is not limited thereto. It is obvious that a person skilled in the art can modify or improve the present invention within the technical concept of the present invention.

[0248] Simple modifications and variations of the present invention all fall within the scope of the present invention, and the specific protection scope of the present invention is defined by the appended claims.

Claims

1. A vacuum cleaner nozzle, wherein: include: The nozzle cover is formed with a suction port for the air containing dust to flow in; A button action component is formed on one side of the nozzle cover; as well as a connecting pipe forming a flow path communicating with the suction port; The connecting pipe comprises: The rotary steering portion is rotatably arranged around a rotation axis; a fixed steering portion rotatably coupled to the rotating steering portion; and a locking portion, for selectively fixing the fixed steering portion to the rotating steering portion; The locking portion includes: a button disposed on the rotary steering portion and actuated by the button actuating member when the angle between the ground surface and the connecting pipe is equal to or smaller than a predetermined angle; and The stopper is actuated by the action of the button, and when not in action, at least a portion of the stopper is inserted into a stopper accommodating portion formed in the fixed steering portion, and when in action, the stopper is drawn out from the stopper accommodating portion.

2. The vacuum cleaner nozzle according to claim 1, wherein: include: A first roller brush is rotatably coupled to the nozzle cover; as well as A second roller brush is rotatably coupled to the nozzle cover; The suction port is formed between the first roller brush and the second roller brush. The diameter of the first roller brush is different from the diameter of the second roller brush. The upper side surface of the nozzle cover is formed to be inclined at a predetermined angle to the ground surface, based on a state in which the first roller brush and the second roller brush are in contact with the ground surface.

3. The vacuum cleaner nozzle according to claim 1, wherein: The button is actuated by being pressed in a direction intersecting the moving direction.

4. The vacuum cleaner nozzle according to claim 3, wherein: The locking portion has a hole formed in the button and further includes a release hook disposed on the button actuating member and inserted into the hole of the button to move the button.

5. The vacuum cleaner nozzle according to claim 1, wherein: The stopper comprises: A hinge, coupled to the rotating steering portion and serving as a central axis of rotation; a button-contacting portion extending radially outward from the hinge of the stopper and in close contact with the button, and rotating about the hinge of the stopper when the button is actuated; and The insertion portion extends from the hinge of the stopper in a direction different from the direction in which the button contact portion extends, and is inserted into the groove formed in the fixed deflection portion when the button is not in operation.

6. The vacuum cleaner nozzle according to claim 1, wherein: The locking portion includes a pinion gear coupled to at least one of the button and the stopper and transmitting power of the button to the stopper.

7. The vacuum cleaner nozzle according to claim 6, wherein: The locking portion includes: a first pinion gear, disposed on one side of the pinion gear; A first pinion gear insertion slot is recessed inwardly on one side of the button and is for inserting the first pinion gear; a first rack formed on an inner side surface of the button facing the first pinion gear and formed on only one of the two surfaces; a second pinion gear, disposed on the other side of the pinion gear; a second pinion gear insertion groove, recessed inwardly on one side of the stopper, and for inserting the second pinion gear; and The second rack is formed on an inner side surface of the stopper facing the second pinion gear, and is formed only on a surface of the two surfaces that does not correspond to the first rack.

8. The vacuum cleaner nozzle according to claim 1, wherein: The locking portion includes: a transmission gear for transmitting power of the button to the stopper; and The first guide protrudes from one side of the transmission gear and is connected to the button. When the button is actuated, the transmission gear is rotated.

9. The vacuum cleaner nozzle according to claim 1, wherein: The locking portion includes: a transmission gear for transmitting power of the button to the stopper; and The second guide member protrudes from the other side of the transmission gear and is connected to the stopper, and moves the stopper when the transmission gear rotates.

10. The vacuum cleaner nozzle according to claim 1, wherein: The locking portion includes: a line connected to the stopper; and The wire reel is wound with the wire and applies an external force to the stopper in a direction in which the stopper is drawn out.

11. The vacuum cleaner nozzle according to claim 1, wherein: The connecting pipe comprises: A first turning portion is hingedly connected to the nozzle cover and causes the connecting pipe to swing vertically; a second steering portion hingedly coupled to the first steering portion and configured to cause the connecting tube to pitch; and a third steering portion hingedly connected to the second steering portion and causing the connecting tube to roll; The fixed steering portion is a third steering portion.

12. The vacuum cleaner nozzle according to claim 11, wherein: The rotary steering portion is a second steering portion.

13. The vacuum cleaner nozzle according to claim 1, wherein: When in operation, the button is pressed by the button actuating member and inserted into the interior of the rotary steering portion. During operation, the stopper is inserted into the interior of the rotating steering portion and simultaneously drawn out from the groove formed in the fixed steering portion.

14. The vacuum cleaner nozzle according to claim 13, wherein: The button is inserted in a direction opposite to the stopper.

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