KR20240038377A - Nozzle for cleaner - Google Patents

Abstract

The present invention relates to a vacuum cleaner nozzle, and includes a nozzle housing, a first agitator rotatably coupled to the nozzle housing, a second agitator rotatably coupled to the nozzle housing, the first agitator and the first agitator. It is formed between two agitators and includes an intake port through which air containing dust flows, and a connection pipe formed with a flow path communicating with the intake port, wherein the diameter of the first agitator is different from the diameter of the second agitator, and the The upper surface of the nozzle housing is inclined at a predetermined angle with the ground, so that the overall height of the cleaner nozzle can be lowered by laying the connecting pipe in the direction of the agitator with a smaller diameter.

Description

Cleaner nozzle {NOZZLE FOR CLEANER}

The present invention relates to a vacuum cleaner nozzle, and more specifically, to a vacuum cleaner nozzle that sucks dust from a floor by rotating two agitators.

A vacuum cleaner refers to a device that uses suction force generated by a suction motor mounted inside the cleaner body to suck in dust and air, and separates dust from the air to collect dust.

The suction nozzle refers to the part that touches the floor and directly sucks in dust and air. The suction force generated by the suction motor mounted inside the vacuum cleaner body is transmitted to the suction motor, and dust and air are sucked into the suction nozzle by this suction force.

An agitator is installed in the suction nozzle. The agitator rotates to scrape away dust from the floor or carpet to improve cleaning performance.

Meanwhile, Korean Patent Publication KR2022-0073810A discloses a vacuum cleaner head equipped with a front agitator and a rear agitator.

The cleaner head has a suction chamber between the front agitator and the rear agitator, and the front agitator and the rear agitator can rotate in opposite directions to guide dust into the suction chamber.

However, the cleaner head as described above has a front agitator and a rear agitator of the same size, so the cleaner body and pipe cannot be laid close to the ground. Therefore, there is a limit to deep cleaning of the lower space of low-height furniture such as a sofa or bed, where the vacuum cleaner head can fit.

In addition, since the above-described cleaner head must rotate two agitators of the same diameter, power is evenly distributed to the two agitators, so it requires relatively high motor output and has the limitation of high power consumption.

In addition, during the cleaning process, when the cleaner head is pressurized by the load of the cleaner body or the user's operating force, the two agitators with the same output and rotating in opposite directions come into contact with the floor, increasing friction, and the rotation of the agitator stops. It can be. In this case, there is a problem that a large load is generated on the motor and damage to the motor occurs.

The present invention was created to improve the problems of the conventional vacuum cleaner nozzle as described above, and its purpose is to provide a vacuum cleaner nozzle that allows the vacuum cleaner body and the pipe connecting the vacuum cleaner body and the vacuum cleaner nozzle to lie close to the ground.

Additionally, the purpose is to provide a cleaner nozzle that can lower the required motor output while rotating two agitators.

In addition, the purpose is to provide a cleaner nozzle that can prevent a large load from being generated on the motor due to friction between the agitator and the ground even if the cleaner nozzle is pressed downward during the cleaning process.

In order to achieve the above-described object, a vacuum cleaner nozzle according to the present invention includes a nozzle housing; a first agitator rotatably coupled to the nozzle housing; a second agitator rotatably coupled to the nozzle housing; an intake port formed between the first agitator and the second agitator, through which air containing dust flows; And it may include a connection pipe formed with a flow path communicating with the intake port.

At this time, the diameter of the first agitator is different from the diameter of the second agitator, and based on the state in which the first agitator and the second agitator are in contact with the ground, the upper surface of the nozzle housing is in contact with the ground. It may be formed to be inclined at a predetermined angle.

At this time, the diameter of the first agitator disposed at the front may be larger than the diameter of the second agitator disposed at the rear. Accordingly, the cleaner main body and the pipe connecting the cleaner main body and the cleaner nozzle can be laid backward.

Meanwhile, an intake port may be formed between the first agitator and the second agitator. At this time, casters may be placed at predetermined intervals at both ends of the suction port in the longitudinal direction. That is, the caster may be disposed between the first agitator and the second agitator.

Meanwhile, the vacuum cleaner nozzle according to the present invention further includes a caster accommodating portion rotatably coupled to the caster, and the caster accommodating portion may be rotated relative to the lower surface of the nozzle housing. Therefore, as the caster accommodating part rotates, it can help the cleaner nozzle move in various directions as well as the forward and backward directions.

Meanwhile, the vacuum cleaner nozzle according to the present invention includes a virtual caster passing surface that passes through the rotation center of the pair of casters in a vertical direction; A virtual agitator passing surface passing along the rotation axis of the second agitator in a vertical direction; And a virtual connector connection surface passing in a vertical direction through a hinge axis that hinge couples the connector and the nozzle housing; wherein the connector connection surface is disposed between the wheel passing surface and the agitator passing surface. It can be.

The vacuum cleaner nozzle according to the present invention is formed to protrude from the upper surface of the nozzle housing in a direction perpendicular to the ground, based on the state in which the first agitator and the second agitator are in contact with the ground, and the connection pipe and It may include a connector coupling part that is hinged.

Meanwhile, the connection pipe may include: a pipe having a flow path formed therein that communicates with the suction port; a first steering unit that accommodates at least a portion of the pipe therein and is hinged to the nozzle housing; a second steering unit hingedly coupled to the first steering unit; and a third steering unit rotatably coupled to the second steering unit.

At this time, the second steering unit may include a locking unit that is coupled to the third steering unit and limits rotation of the third steering unit.

In addition, the vacuum cleaner nozzle according to the present invention may further include a connector fastening part formed on the rear side of the nozzle housing and fastened to the locking part to release the coupling between the locking part and the third steering part.

Therefore, when the locking part and the connector fastening part are coupled, based on the state in which the first agitator and the second agitator are in contact with the ground, at least a portion of the connector is connected to the upper end of the first agitator. It can be placed closer to the ground.

As described above, according to the vacuum cleaner nozzle according to the present invention, the diameters of the two agitators are configured differently to enable an inclined surface to be formed on the upper surface of the nozzle housing, so that the pipe can be laid in the direction of the agitator with a smaller diameter, The overall height of the cleaner nozzle can be lowered, and the pipe can be kept close to the ground. Therefore, it is possible to clean furniture with a low height in the lower space by pushing the cleaner nozzle deeply.

Additionally, the output required for the motor can be lowered by varying the diameter of the two agitators and reducing the torque applied to the agitator with a smaller diameter. Therefore, there is an effect of reducing the amount of power consumed by the vacuum cleaner nozzle.

When the cleaner nozzle is pressed downward, the caster and the second agitator are strongly pressed against the ground, and the increase in friction between the first agitator and the ground can be reduced. Therefore, there is an effect of preventing a large load from being generated on the motor due to friction between the first agitator and the ground.

Figure 1 is a perspective view for explaining a vacuum cleaner according to an embodiment of the present invention.
Figure 2 is a perspective view for explaining a vacuum cleaner nozzle according to an embodiment of the present invention.
Figure 3 is a bottom view of Figure 1.
Figure 4 is a cross-sectional view for explaining the position of the connector coupling part in Figure 3.
FIG. 5 is a cross-sectional view for explaining the caster accommodating part in FIG. 3.
Figure 6 is a diagram for explaining the positional relationship between a virtual caster passage surface, a virtual agitator passage surface, and a virtual connector connection surface in a vacuum cleaner nozzle according to an embodiment of the present invention.
Figure 7 is a diagram for explaining the steering direction of a connector in a vacuum cleaner nozzle according to an embodiment of the present invention.
Figure 8 is a bottom view for explaining a connection pipe in a vacuum cleaner nozzle according to an embodiment of the present invention.
Figure 9 is a partial enlarged view for explaining the locking part and the connection pipe fastening part in the vacuum cleaner nozzle according to an embodiment of the present invention.
Figure 10 is a side view for explaining a state in which the locking part and the connection pipe fastening part are combined in the cleaner nozzle according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

Since the present invention can make various changes and have various embodiments, specific embodiments will be 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 as including all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Figure 1 is a perspective view for explaining a vacuum cleaner according to an embodiment of the present invention, Figure 2 is a perspective view for explaining a cleaner nozzle according to an embodiment of the present invention, and Figure 3 is a perspective view for explaining the cleaner nozzle according to an embodiment of the present invention. A bottom view is shown, and Figure 4 is a cross-sectional view for explaining the position of the connector coupling part in the vacuum cleaner nozzle according to an embodiment of the present invention, and Figure 5 shows a caster accommodation in the vacuum cleaner nozzle according to an embodiment of the present invention. A cross-sectional view to explain the swelling is shown.

With reference to FIGS. 1 to 5, the vacuum cleaner nozzle 1 of the present invention will be described as follows.

The vacuum cleaner nozzle 1 of this embodiment can be used in connection with, for example, a hand-held vacuum cleaner or a canister-type vacuum cleaner.

Additionally, in this specification, “floor surface” may be understood to mean not only the floor surface of a living room or room, but also a cleaning surface such as a carpet.

That is, the cleaner nozzle 1 can be detachably connected to the cleaner main body 2 or the extension tube 3. As the cleaner nozzle 1 is connected to the cleaner main body 2 or the extension tube 3, the user can clean the floor using the cleaner nozzle 1. At this time, the cleaner body (2) to which the cleaner nozzle (1) is connected can separate dust in the air using a multi-cyclone method.

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

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

Accordingly, in this embodiment, the cleaner nozzle 1 may serve to suck in foreign substances and air from the floor and guide them to the cleaner main body 2.

A vacuum cleaner nozzle 1 according to an embodiment of the present invention includes a nozzle housing 100, a first agitator 200, a second agitator 300, and a connection pipe 400.

For reference, the directions used in the present invention are described as follows.

In the present invention, the direction of the cleaner nozzle 1 can be defined based on the suction port 121. Specifically, the direction in which the first agitator 200 is disposed based on the suction port 121 can be called the front of the cleaner nozzle 1, and the second agitator 200 is disposed relative to the suction port 121. The directed direction can be called the rear of the cleaner nozzle (1). In addition, based on the state in which the vacuum cleaner nozzle 1 is placed on the floor (ground) (the state in which the first agitator 200 and the second agitator 300 are in contact with the floor), the direction away from the floor can be called upward (upper side), and the direction approaching the floor can be called downward (lower side).

The nozzle housing 100 is equipped with the first agitator 200 and the second agitator 300 and can have the external shape of the vacuum cleaner nozzle 1. Additionally, a connector 400 may be coupled to the nozzle housing 100.

The nozzle housing 100 may include an upper surface 110 of the nozzle housing 100 to which the connector 400 is coupled. A connector coupling portion 130 may be formed to protrude on the upper surface 110. Additionally, the connector coupling portion 130 may be hingedly coupled to the connector 400.

Based on the state in which the first agitator 200 and the second agitator 300 are in contact with the bottom surface (ground), the upper surface 110 of the nozzle housing 100 may be formed to be inclined at a predetermined angle with the ground. there is.

Specifically, based on the state in which the first agitator 200 and the second agitator 300 are in contact with the floor surface (ground), the upper surface 110 is one side where the first agitator 200 is disposed. The second agitator 300 may be formed farther from the ground than the other side where it is disposed.

Therefore, according to this embodiment, there is an advantage in that the rear height of the nozzle housing 100 can be reduced among the total height. When the rear height is lowered, the connector 400 hinged to the nozzle housing 100 may be rotated at a larger angle toward the rear of the cleaner nozzle 1. In this case, the height from the ground to the top of the connector 400 can be lowered. As described above, the lower the height from the ground to the top of the connector 400, the cleaner nozzle can be inserted into narrow spaces below furniture or chairs, and the area that can be cleaned becomes wider.

The nozzle housing 100 may include a lower surface 120 on which the first agitator 200 and the second agitator 300 are disposed.

At this time, the lower surface 120 may be arranged to face the floor when the nozzle housing 100 is placed on the floor (ground).

An inlet 121 may be formed in the nozzle housing 100. Specifically, an intake port 121 may be formed on the lower surface 120 of the nozzle housing 100. The inlet 121 refers to a space into which air containing dust can flow. With this configuration, when the suction motor (not shown) of the cleaner main body 2 operates, dust and air existing around the floor can be sucked into the flow path of the cleaner nozzle 1 through the suction port 121.

Inside the nozzle housing 100, a printed circuit board (not shown) may be installed to control an agitator motor (not shown).

Additionally, a flow path may be formed in the nozzle housing 100 to communicate with the suction port 121 and guide air flowing in from the suction port 121 to the cleaner main body 2.

The flow path may be disposed inside the nozzle housing 100, the lower end of the flow path may communicate with the suction port 121, and the upper end of the flow path may be connected to the connector 400.

At this time, the flow path connecting the suction port 121 and the connection pipe 400 may be formed approximately along the vertical direction. With this configuration, there is an advantage in that the path through which air containing dust is sucked can be minimized and flow loss can be minimized.

A caster receiving hole 122 may be formed in the nozzle housing 100. Specifically, a caster receiving hole 122 may be formed in the lower surface 120 of the nozzle housing 100. The caster receiving hole 122 may refer to a space where at least a portion of the caster 124 can be exposed to the outside.

The caster receiving hole 122 may be disposed between the first agitator 200 and the second agitator 300. Additionally, a pair of caster receiving holes 122 may be arranged at a predetermined distance from both ends of the suction port 121 in the left and right directions. That is, the pair of caster receiving holes 122 may be disposed on both sides of the lower surface 120 in the left and right directions with the intake port 121 as the center.

With this configuration, the caster receiving hole 122 can place the caster 124 between the first agitator 200 and the second agitator 300. Therefore, when an external force is applied during a cleaning operation, the caster 124 can support the nozzle housing 100 and excessive external force is applied to the first agitator 200 and/or the second agitator 300, thereby causing the agitator to be damaged. This has the effect of preventing the load applied to the data motor (not shown) from increasing.

In addition, there is an advantage in that dust flowing toward the suction inlet 121 can be prevented from flowing into the caster accommodating hole 122 by maintaining a distance between the inlet 121 and the caster accommodating hole 122.

The caster receiving hole 122 may be formed so that the caster 124 can be relatively rotated. For example, the caster receiving hole 122 may be formed in a circular or oval hole shape. Accordingly, even if the caster receiving portion 123 and the caster 124 rotate about a rotation axis perpendicular to the ground, they can be prevented from interfering with the lower surface 120.

The caster receiving portion 123 is rotatably coupled to the caster 124 and may be rotatable relative to the lower surface 120 of the nozzle housing 100.

The caster receiving portion 123 may be disposed in the inner space of the nozzle housing 100. That is, the caster accommodating portion 123 may be disposed in the space formed between the lower surface 120 and the upper surface 110 of the nozzle housing 100. At this time, the shaft 123a provided in the caster receiving portion 123 may be rotatably coupled to the nozzle housing 100. The shaft 123a of the caster receiving portion 123 may be formed along a direction perpendicular to the lower surface 120. Accordingly, based on when the vacuum cleaner nozzle 1 is placed on the floor, the caster accommodating portion 123 can rotate around a rotation axis perpendicular to the floor.

Additionally, the caster receiving portion 123 may be formed in a shape that can accommodate at least a portion of the caster 124. For example, the caster receiving portion 123 may have a cover surface 123b formed along a direction perpendicular to the shaft 123a (direction parallel to the lower surface 120). Additionally, the caster receiving portion 123 may have a side wall surface 123c extending vertically downward from the cover surface 123b. Additionally, a caster shaft 123d, which becomes the rotation axis of the caster 124, may be coupled to the side wall surface 123c. At this time, the caster shaft 123d may be formed along a direction parallel to the extension direction of the lower surface 120 (direction parallel to the bottom surface).

Therefore, according to the present invention, the caster receiving portion 123 can rotate based on a rotation axis perpendicular to the floor surface. With this configuration, there is an effect that there are no restrictions on the direction in which the caster 124 can move.

Therefore, according to the present invention, the caster 124 can roll as the caster accommodating portion 123 rotates even when the user moves the cleaner nozzle 1 not only in the forward and backward directions, but also in the left and right directions or diagonally. You can change the direction.

As a result, in the present invention, even if the user pushes and pulls the cleaner nozzle 1 in various directions, the caster 124 can change direction and roll along the floor, which has the effect of improving the user's operating power.

The caster 124 is rotatably coupled to the caster receiving portion 123 and is disposed on the lower surface 120 so that it can roll along the floor (ground).

A plurality of casters 124 may be provided on the lower surface 120. For example, a pair of casters 124 may be arranged to be spaced apart in the left and right directions on the lower surface 120. At this time, an intake port 121 may be disposed between the pair of shafts.

Each caster 124 may be rotatably coupled to the caster receiving portion 123 by a caster shaft 123d.

At least a portion of the caster 124 may be combined with the caster receiving portion 123 and disposed inside the nozzle housing 100. Additionally, at least a portion of the caster 124 may pass through the caster receiving hole 122 and be exposed to the outside of the nozzle housing 100.

With this configuration, when the cleaner nozzle 1 is placed on the floor, the caster 124 may be in contact with the floor. Therefore, when the cleaner nozzle 1 is moved by a user's manipulation, friction between the nozzle housing 100 and the floor can be reduced and the mobility of the cleaner nozzle 100 can be improved.

Meanwhile, a virtual caster passing surface C may be formed that passes through the rotation center of the pair of casters and extends along a direction perpendicular to the floor surface.

Meanwhile, in this embodiment, a foreign matter blocking portion 125 may be further disposed outside the caster receiving hole 122.

The foreign matter blocking portion 125 may be formed of a shape or material that increases friction. As an example, the foreign matter blocking portion 125 may be formed in a form in which a plurality of fine protrusions are formed to protrude. As another example, the foreign matter blocking portion 125 may be formed of a rubber material. Accordingly, the foreign matter blocking unit 125 may block foreign substances from passing through the surface of the foreign matter blocking unit 125 .

The foreign matter blocking portion 125 may be disposed on the lower surface 120 and may be disposed to surround at least a portion of the caster receiving hole 122. For example, the foreign matter blocking portion 125 may be formed in a horseshoe shape that protrudes toward the intake port 121. With this configuration, there is an effect of blocking dust moved by the rotation of the first agitator 200 and the second agitator 300 from flowing into the caster receiving hole 122.

Meanwhile, the connector coupling portion 130 may be formed to protrude and extend from the upper surface 110. Specifically, based on the state in which the first agitator 200 and the second agitator 300 are in contact with the floor (ground) (the state in which the vacuum cleaner nozzle 1 is placed on the floor), the connector coupling part ( 130) may be formed to protrude and extend from the upper surface 110 along a direction perpendicular to the bottom surface (direction perpendicular to the lower surface 120).

In particular, the connector coupling portion 130 may be formed to protrude and extend from the inclined surface 113 along a direction perpendicular to the floor surface (direction perpendicular to the lower surface 120).

A pair of connector coupling parts 130 may be formed in a symmetrical form on the upper surface 110. Additionally, the connector 400 may be rotatably coupled between the pair of connector coupling portions 130. Specifically, the pair of connector coupling portions 130 may be hinge-coupled with the connector 400. That is, each pair of connector coupling portions 130 may be provided with a hinge axis coupled to the connector 400, and the connector 400 may rotate (pivot) around the hinge axis.

At this time, the upper end of the connector coupling portion 130 may be disposed farther from the ground than the upper surface of the nozzle housing 100. That is, when the cleaner nozzle 1 is placed on the floor, the connector coupling portion 130 may be disposed farther from the ground than the upper end of the upper surface.

With this configuration, a sufficient angle at which the connector 400 can rotate can be secured. In addition, since the upper surface 110 is formed to be inclined downward in the direction of the second agitator 300, when the connector 400 rotates toward the second agitator 300, the connector 400 is close to the bottom surface. It can be placed (approximately parallel to the floor surface). Accordingly, the overall height of the vacuum cleaner nozzle 1 can be lowered, and there is an advantage in being able to clean low-height accessible spaces such as beds and sofas.

Meanwhile, a virtual connector connection surface P passing through a hinge axis that connects the connector 400 and the nozzle housing 100 in a direction perpendicular to the ground may be formed.

The connector fixing part 140 is formed on the rear side of the nozzle housing 100 and can be detachably coupled to the connector 400. Specifically, the connector fixing portion 140 protrudes from the rear end of the upper surface 110 and may be fastened to the locking portion 432 provided on the connector 400.

For example, the connector fixing part 140 may be protruding in the shape of a hook and inserted into and fastened to the locking part 432.

With this configuration, the connector fixing part 140 can couple the nozzle housing 100 and the connector 400. Accordingly, the connector 400 coupled to the connector coupling portion 130 and the connector fixing portion 140 may be restricted from rotating (pivoting) in the left and right directions.

At the same time, as the connector fixing part 140 is coupled to the locking part 432, the second steering part 430 and the third steering part 440, which will be described later, can be released. Specifically, the connector fixing part 140 is fastened to the locking part 432 to release the coupling between the locking part 432 and the third steering part. Fixing and releasing the second steering unit 430 and the third steering unit 440 by the locking unit 432 will be described later.

The first agitator 200 is installed in the nozzle housing 100 and serves to separate foreign substances from the cleaning object. The first agitator 200 may be disposed in front of the cleaner nozzle 1. The first agitator 200 may be rotatably coupled to the nozzle housing 100.

The first agitator 200 is formed in a cylindrical shape and may be arranged along the left and right directions of the nozzle housing 100. That is, the longitudinal direction (axial direction) of the first agitator 200 may be arranged in a direction that intersects the front-to-back direction of the cleaner nozzle 1.

A brush or a member capable of increasing friction may be provided on the outer peripheral surface of the first agitator 200.

The first agitator 200 is equipped with at least one gear and can receive rotational power from an agitator motor (not shown).

The first agitator 200 may guide external dust and air to the intake port 121 by rotation. The first agitator 200 may be rotated in a direction in which the outer peripheral surface facing the floor moves toward the suction port 121. In other words, the first agitator 200 may be rotated counterclockwise when looking at the cleaner nozzle 1 from the left side of the cleaner nozzle 1. With this configuration, external dust and air can be guided toward the intake port 121 while rubbing against the first agitator 200.

Meanwhile, the first agitator 200 may be replaceably coupled to the nozzle housing 100. Therefore, the first agitator 200 can be replaced and cleaned depending on the cleaning environment.

The second agitator 300 is installed in the nozzle housing 100 and serves to separate foreign substances from the cleaning object. The second agitator 300 may be disposed rearward from the cleaner nozzle 1. The second agitator 300 may be rotatably coupled to the nozzle housing 100.

The second agitator 300 is formed in a cylindrical shape and may be arranged along the left and right directions of the nozzle housing 100. That is, the longitudinal direction (axial direction) of the second agitator 300 may be arranged in a direction that intersects the front-to-back direction of the cleaner nozzle 1.

A brush or a member capable of increasing friction may be provided on the outer peripheral surface of the second agitator 300.

The second agitator 300 is equipped with at least one gear and can receive rotational power from an agitator motor (not shown). At this time, the first agitator 200 and the second agitator 300 may receive power from one agitator motor. For example, the first agitator 200 and the second agitator 300 may be connected by a belt to receive power from the agitator motor. As another example, the first agitator 200 and the second agitator 300 may be connected to each other through at least one gear and receive power from the agitator motor.

The second agitator 300 may guide external dust and air to the intake port 121 by rotation. At this time, the second agitator 300 may be rotated in the opposite direction to the first agitator 200.

That is, the second agitator 300 may be rotated in a direction in which the outer peripheral surface facing the floor moves toward the suction port 121. In other words, the second agitator 300 may be rotated clockwise based on the view from the left side of the cleaner nozzle 1. With this configuration, external dust and air can be guided toward the intake port 121 while rubbing against the first agitator 200.

With this configuration, dust around the suction port 121 can be collected in the direction of the suction port 121 by the first agitator 200 and the second agitator 300, and is suctioned by the suction force of the cleaner main body 2. and can be removed from the floor.

Meanwhile, the second agitator 300 may be replaceably coupled to the nozzle housing 100. Therefore, the second agitator 300 can be replaced and cleaned depending on the cleaning environment.

Moreover, since the vacuum cleaner nozzle 1 of the present invention can replace both the first agitator 200 and the second agitator 300, various agitator combinations can be made depending on the condition of the floor or the cleaning environment to improve cleaning efficiency. There is an effect that can be maximized.

Meanwhile, in the vacuum cleaner nozzle 1 according to an embodiment of the present invention, the diameter of the first agitator 200 and the diameter of the second agitator 300 are different. Specifically, the diameter of the first agitator 200 is larger than the diameter of the second agitator 300.

When the diameter of the first agitator 200 is larger than the diameter of the second agitator 300, the torque of the second agitator 300, which has a smaller diameter, is smaller than the torque of the first agitator 200. That is, the rotational power required for rotation of the second agitator 300 is less than the power for rotation of the first agitator 200.

Therefore, compared to rotating two agitators with the same diameter, when the diameter of the second agitator 300 is smaller than the diameter of the first agitator 200 as in the present invention, rotating the two agitators The motor output required to do this is low.

Therefore, according to the present invention, the output required for the motor can be lowered while rotating two agitators with one agitator motor (not shown). Therefore, the amount of power consumed by the cleaner nozzle can be reduced, and the load applied to the motor can also be reduced.

In addition, the nozzle housing 100 has a diameter of the first agitator 200 larger than that of the second agitator 300 and covers the upper portions of the first agitator 200 and the second agitator 300. A slope may be formed on the upper surface 110 of . That is, when the first agitator 200 and the second agitator 300 are placed on the floor (ground), the height of the top of the first agitator 200 is equal to the height of the top of the second agitator 300. A height difference may also occur in the nozzle housing 100 that is higher than the height and covers the nozzle housing 100, and a slope connecting them may be formed. That is, the upper surface 110 of the nozzle housing 100 of the present invention has a first agitator cover 111 covering the vertical upper side of the first agitator 200, and a vertical upper side of the second agitator 300. A second agitator cover 112 covering the cover and an inclined surface 113 connecting the first agitator cover 111 and the second agitator cover 112 may be formed.

Through this configuration, when the connector 400 is rotated in the direction of the second agitator 300, the position where the connector 400 contacts the nozzle housing 100 can be lowered. Therefore, according to the present invention, the connection pipe 400 can be laid close to the ground and the overall height of the cleaner nozzle 1 can be lowered.

Meanwhile, Figure 6 shows a diagram for explaining the positional relationship between a virtual caster passage surface, a virtual agitator passage surface, and a virtual connector connection surface in a vacuum cleaner nozzle according to an embodiment of the present invention.

Referring to FIG. 6, in this embodiment, a virtual agitator passing surface A is formed that passes through the rotation axis (center of rotation) of the second agitator 300 along a direction perpendicular to the floor surface (ground). You can.

Below, the arrangement relationship between the agitator passing surface (A), the connector connecting surface (P), and the caster passing surface (C) and their effects will be described.

In the cleaner nozzle (1) according to an embodiment of the present invention, the connector connection surface (P) is disposed between the caster passage surface (C) and the agitator passage surface (A).

Here, the connector connection surface P may be a point where the connector coupling portion 130 and the connector 400 are coupled to each other and a virtual surface extending from this point in a direction perpendicular to the ground. In other words, based on the state in which the vacuum cleaner nozzle (1) is placed on the ground (floor surface), the connector connection surface (P) is a virtual shape extending along the direction perpendicular to the ground through the first steering axis (X). It could be cotton.

When the user manipulates the cleaner main body 2, the extension tube 3 and the connector 400 may press or lift the nozzle housing 100 while the user pushes or pulls the cleaner main body 2. At this time, the operating force applied by the user is transmitted to the nozzle housing 100 through the extension pipe 3 and the connecting pipe 400, and the nozzle housing 100 is moved on the floor (ground) by the user's operating force.

At this time, the user's operating force may be applied through the point where the connector coupling portion 130 and the connector 400 are coupled to each other, and may be applied downward in a direction perpendicular to the ground along the connector coupling portion 130 to form a nozzle. It may be delivered to the housing 100. In other words, the connector connection surface (P) may mean the location and direction where the user's manipulation force is applied.

Meanwhile, the caster passing surface C may be a virtual surface formed along a direction perpendicular to the ground and passing through the rotation center of the pair of casters 124. This caster passing surface C may be a virtual surface formed along a direction perpendicular to the ground through a point where the pair of casters 124 contact the floor surface (ground).

Accordingly, the caster passing surface C may mean the position and direction in which the vacuum cleaner nozzle 1 presses the floor surface due to the load of the vacuum cleaner nozzle 1 and the user's operating force.

Meanwhile, the agitator passing surface A may be a virtual surface that passes through the rotation axis of the second agitator and extends along a direction perpendicular to the ground. This agitator passing surface A may be a virtual surface formed along a direction perpendicular to the ground by passing a line where the second agitator 300 is in contact with the floor surface (ground).

Accordingly, the agitator passing surface A may mean the position and direction in which the vacuum cleaner nozzle 1 presses the floor surface due to the load of the vacuum cleaner nozzle 1 and the user's operating force.

Therefore, since the connector connecting surface (P) is disposed between the caster passing surface (C) and the agitator passing surface (A), the force (manipulating force) pressed by the user is applied to the caster 124 and the second agitator 300. may be approved.

With this configuration, when the vacuum cleaner nozzle 1 is pressed downward by the user's operating force, the caster 124 and the second agitator 300 are pressed toward the ground, and the first agitator 200 and the It can reduce the increase in friction on the ground. Therefore, there is an effect of preventing a large load from being generated on the agitator motor due to friction between the first agitator 200 and the ground.

Meanwhile, when the caster 124 and the second agitator 300 are pressed toward the ground, the second agitator 300 may receive less frictional resistance between the caster 124 and the second agitator 300 with the ground compared to the first agitator 200. there is.

Specifically, the first agitator 200 and the second agitator 300 receive the same torque from one agitator motor. At this time, when the diameter of the first agitator 200 is larger than the diameter of the second agitator 300, the torque due to friction between the first agitator 200 and the ground is greater than the diameter of the second agitator 300 and the ground. It can be greater than the torque caused by friction between them.

For example, when the friction force (F1) between the first agitator 200 and the ground and the friction force (F2) between the second agitator 300 and the ground are the same (F1 = F2), the first agitator ( Since the distance (r1) between the rotation center of the second agitator 300 and the ground (r1) is greater than the distance between the rotation center (r2) of the second agitator 300 and the ground (r1>r2), the first agitator 200 and the ground The torque (r1ⅹF1) due to friction is greater than the torque (r2ⅹF2) due to friction between the second agitator 300 and the ground.

Therefore, the second agitator 300 can rotate even under conditions where rotation would have stopped if the first agitator 200 had friction with the ground.

Therefore, according to the present invention, the diameter of the second agitator 300 is made smaller than the diameter of the first agitator 200, and the user's manipulation force presses the second agitator 300, creating a friction force like a mat or carpet. The second agitator 300 can be rotated even when cleaning a large floor surface. Therefore, the vacuum cleaner nozzle 1 of the present invention can easily move forward or backward even on floor surfaces such as mats or carpets, and has the effect of preventing overload on the agitator motor.

Figure 7 is a diagram for explaining the steering direction of the connector in the cleaner nozzle according to an embodiment of the present invention, and Figure 8 is a diagram for explaining the connector in the cleaner nozzle according to an embodiment of the present invention. A bottom view is shown, and Figure 9 shows a partially enlarged view to explain the locking part and the connector fastening part in the cleaner nozzle according to an embodiment of the present invention, and Figure 10 shows a partial enlarged view according to an embodiment of the present invention. A side view is shown to explain the state in which the locking part and the connector fastening part of the vacuum cleaner nozzle are combined.

With reference to FIGS. 7 to 10, the connector 400 according to an embodiment of the present invention is described as follows.

The connection pipe 400 forms a flow path that communicates with the suction port 121, and connects the nozzle housing 100 and the extension pipe 3 or the nozzle housing 100 and the cleaner body 2.

The connection pipe 400 includes a pipe 410, a first steering unit 420, a second steering unit 430, and a third steering unit 440.

The pipe 410 may have a flow path in communication with the suction port 121 formed therein. The pipe 410 may be coupled to the nozzle housing 100 and communicate with a flow path inside the nozzle housing 100.

The pipe 410 may be formed of a deformable material. Specifically, the pipe 410 may be formed of a bendable material. Accordingly, the pipe 410 may be bent and deformed according to the rotation of each of the first steering unit 420, the second steering unit 430, and the third steering unit 440 of the connection pipe 400.

The first steering unit 420 accommodates at least a portion of the pipe 410 therein and is hinge-coupled with the nozzle housing 100.

The first steering part 420 is formed in a hollow shape so that the pipe 410 penetrates the inside, one side is hinged with the connector coupling part 130, and the other side is hinged with the second steering part 430. .

At this time, the axis along which the first steering unit 420 rotates with respect to the connector coupling unit 130 may be arranged along a direction parallel to the floor surface (ground).

With this configuration, when the user places the cleaner nozzle 1 on the floor and lifts or lowers the cleaner main body 2, the cleaner main body 2 and the connector 400 can be rotated around the hinge axis. .

In addition, the direction of the hinge axis (hereinafter referred to as 'first steering axis (X)') where the first steering unit 420 and the connector coupling unit 130 are coupled and the first steering unit 420 and The directions of the hinge axes to which the second steering unit 430 is coupled (hereinafter referred to as 'second steering axis Y') may be perpendicular to each other.

With this configuration, when the user places the cleaner nozzle 1 on the floor and moves the cleaner main body 2 in the left and right directions, the cleaner main body 2 and the connector 400 rotate around the second steering axis. It can be.

The direction in which the first steering unit 420 rotates (pivots) with respect to the nozzle housing 100 may intersect with the direction in which the second steering unit 430 rotates with respect to the first steering unit 420. Therefore, in the vacuum cleaner nozzle 1 of the present invention, the connection pipe 400 has the advantage of being bent at various angles by combining the rotation direction of the first steering unit 420 and the rotation direction of the second steering unit 430. .

The second steering unit 430 is hingedly coupled to the first steering unit 420 and is coupled to the third steering unit 430 to enable relative rotation.

Specifically, the second steering unit 430 is formed in a hollow shape so that the pipe 410 penetrates therein, one side is hinged to the first steering unit 420, and the other side is connected to the third steering unit 440. Combined to allow relative rotation.

A locking unit 431 may be disposed in the second steering unit 430. The locking unit 431 is fixedly coupled to the second steering unit 430, and can be inserted and coupled to the third steering unit 440 as it moves in a straight line. For example, the locking unit 431 may be provided with a plate-shaped stopper 431a that is inserted into the third steering unit 440 through linear movement. The stopper 431a is disposed at a position where it can be combined with the connector fixing part 140.

The stopper 431a may be disconnected from the third steering unit 430 depending on the position of the connector 400. When the connector 400 is not rotated to a specific position, the stopper 431a is arranged to protrude in the direction of the third steering unit 430. Then, when the stopper 431a is coupled with the connector fixing part 140 according to the rotation of the connector 400, the stopper 431a is pulled in the direction of the nozzle housing 100 and coupled with the third steering unit 430. This is released. Meanwhile, the stopper 431a is connected to a spring (not shown), and can be returned to the direction of the third steering unit 430 when the connection between the connector fixing part 140 and the stopper 431a is released.

The third steering unit 440 is rotatably coupled to the second steering unit 430. For example, the third steering unit 440 is formed similarly to a tube shape, and one inner peripheral surface of the third steering unit 440 may receive and be coupled to the other end of the second steering unit 430. At this time, a protrusion is formed on the other end of the second steering unit 430 to prevent separation of the second steering unit 430 and the third steering unit 440.

The third steering unit 440 can rotate using the other end of the second steering unit 430 as a rotation axis. At this time, the rotation axis of the third steering unit 440 (hereinafter referred to as 'third steering axis (Z)') is the direction of the first steering axis (X) and the direction of the second steering axis (Y). can be perpendicular to each other.

With this configuration, when the user places the vacuum cleaner nozzle 1 on the floor and rotates the vacuum cleaner body 2, the third steering unit 440 can be rotated. This makes it possible to clean the floor surface by lying down the cleaner body 2 while the user is lying face down, when cleaning a place where the space where the cleaner nozzle can enter is narrow, such as the bottom of a bed or furniture.

As a result, the connector 400 of the present invention can be rotated through three rotation axes and bent at various angles, which has the advantage of facilitating user operation.

The other side of the third steering unit 440 is detachably coupled to the extension pipe 3 or the cleaner main body 2.

The third steering unit 440 is formed with a flow path through which air can flow. As an example, the third steering unit 440 may accommodate a pipe 410 therein. As another example, a space communicating with the pipe 410 may be formed inside the third steering unit 440.

A stopper receiving portion (not shown) into which the stopper 431a can be inserted may be formed in the third steering unit 440. For example, although not shown, the stopper receiving portion (not shown) may be formed in a square groove shape to accommodate the plate-shaped stopper 431a.

When the stopper 431a is coupled to the stopper accommodating part (not shown), the relative rotation of the third steering unit 440 with respect to the second steering unit 430 is limited.

With this configuration, in a position where rotation of the third steering unit 440 is not required, the third steering unit 440 does not rotate even if the user turns the vacuum cleaner body 2, and the entire vacuum cleaner nozzle 1 can be rotated. there is.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of the present invention, and the present invention is not limited thereto, and the present invention is intended to be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modification or improvement is possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

1: Vacuum cleaner nozzle
2: Vacuum cleaner body
100: nozzle housing
110: upper side
113: slope
120: lower side
121: intake port
123: Caster receiving portion
124: Caster
130: Connector joint
140: Connector fixture
200: 1st agitator
300: Second agitator
400: connector
410: pipe
420: First steering unit
430: Second steering unit
431: Locking unit
440: Third steering unit

Claims (11)

nozzle housing;
a first agitator rotatably coupled to the nozzle housing;
a second agitator rotatably coupled to the nozzle housing;
an intake port formed between the first agitator and the second agitator, through which air containing dust flows; and
A connection pipe formed with a flow path communicating with the intake port;
Including,
The diameter of the first agitator is different from the diameter of the second agitator,
A cleaner nozzle, wherein the upper surface of the nozzle housing is inclined at a predetermined angle with the ground, based on the state in which the first agitator and the second agitator are in contact with the ground.
According to paragraph 1,
A vacuum cleaner nozzle, characterized in that the diameter of the first agitator is larger than the diameter of the second agitator.
According to paragraph 1,
Casters disposed between the first agitator and the second agitator and disposed at predetermined intervals at both ends of the suction port in the longitudinal direction;
A cleaner nozzle further comprising:
According to paragraph 3,
a caster receiving portion rotatably coupled to the caster;
It further includes,
The caster receiving part is,
A vacuum cleaner nozzle, characterized in that it is rotated relative to the lower surface of the nozzle housing.
According to paragraph 3,
A virtual caster passing plane passing through the rotation center of the pair of casters in a vertical direction;
A virtual agitator passing surface passing along the rotation axis of the second agitator in a vertical direction; and
A virtual connector connection surface passing in a vertical direction through a hinge axis that hinge-couples the connector and the nozzle housing;
Including,
A cleaner nozzle, characterized in that the connector connection surface is disposed between the caster passage surface and the agitator passage surface.
According to paragraph 1,
A vacuum cleaner nozzle, characterized in that the first agitator rotates in the opposite direction to the second agitator.
According to paragraph 1,
a connector coupling portion that protrudes from the upper surface of the nozzle housing in a direction perpendicular to the ground based on the state in which the first agitator and the second agitator are in contact with the ground, and is hinged to the connector;
A cleaner nozzle containing a.
In clause 7,
Based on the state in which the first agitator and the second agitator are in contact with the ground, the upper end of the connector coupling portion is disposed farther from the ground than the upper surface of the nozzle housing.
In clause 7,
The connector is,
a pipe formed inside a flow path communicating with the intake port;
a first steering unit that accommodates at least a portion of the pipe therein and is hinged to the nozzle housing;
a second steering unit hingedly coupled to the first steering unit; and
a third steering unit rotatably coupled to the second steering unit;
Including,
The second steering unit,
a locking unit coupled to the third steering unit to limit rotation of the third steering unit;
A cleaner nozzle containing a.
According to clause 9,
A connector fixing part formed on the rear side of the nozzle housing and engaged with the locking part to release the coupling between the locking part and the third steering part;
A cleaner nozzle further comprising:
According to clause 10,
When the locking part and the connector fixing part are coupled, based on the state in which the first agitator and the second agitator are in contact with the ground, at least a portion of the connector is lower than the upper end of the first agitator. A cleaner nozzle, characterized in that it is arranged close to.