US-20260123799-A1 - VACUUM CLEANER NOZZLE

US20260123799A1US 20260123799 A1US20260123799 A1US 20260123799A1US-20260123799-A1

Abstract

Proposed is a cleaner nozzle. A connection tube includes a locking part configured to selectively secure a fixed steering part to a rotating steering part and having a button and the stopper. The button is operated by a button operating member when an angle between a ground and the connection tube is a predetermined angle or less, and the stopper is operated by the operation of the button. At least a portion of the stopper is inserted into a stopper receiving part formed in the fixed steering part when the button is not operated and is pulled out from the stopper receiving part when the button is operated, so that a nozzle housing does not wobble and operability is secured.

Inventors

Kyoungho RYOU
Moohyun Ko
Sungjun Kim
Kookhaeng LEE

Assignees

LG ELECTRONICS INC.

Dates

Publication Date: 20260507
Application Date: 20230927
Priority Date: 20221011

Claims (14)

1 . A cleaner nozzle comprising: a nozzle housing having a suction port through which air containing dust is introduced; a button operating member formed on one side of the nozzle housing; and a connection tube having a flow path formed to communicate with the suction port, wherein the connection tube comprises: a rotating steering part arranged to be rotatable about a rotation axis thereof; a fixed steering part rotatably coupled to the rotating steering part; and a locking part configured to selectively secure the fixed steering part to the rotating steering part, wherein the locking part comprises: a button arranged on the rotating steering part and operated by the button operating member when an angle between a ground and the connection tube is equal to or less than a predetermined angle; and a stopper operated by the operation of the button, with at least a portion of the stopper inserted into a stopper receiving part formed in the fixed steering part when the button is not operated and pulled out from the stopper receiving part when the button is operated.
2 . The cleaner nozzle of claim 1 , further comprising: a first agitator rotatably coupled to the nozzle housing; and a second agitator rotatably coupled to the nozzle housing, wherein the suction port is formed between the first agitator and the second agitator, a diameter of the first agitator is different from a diameter of the second agitator, and an upper surface of the nozzle housing is formed to be inclined at a predetermined angle to the ground on the basis of a state in which the first agitator and the second agitator are in contact with the ground.
3 . The cleaner nozzle of claim 1 , wherein the button is operated by being pressed in a direction intersecting a moving direction thereof.
4 . The cleaner nozzle of claim 3 , wherein the locking part has a hole formed in the button, and further comprises a release hook arranged on the button operating member and configured to move the button when the release hook is inserted into the hole of the button.
5 . The cleaner nozzle of claim 1 , wherein the stopper comprises: a hinge coupled to the rotating steering part and configured to serve as a center shaft of rotation; a button close-contact part extending radially outward from the hinge of the stopper, being in close contact with the button, and configured to rotate about the hinge of the stopper when the button is operated; and an insertion part extending from the hinge of the stopper in a direction different from a direction in which the button close-contact part extends, and configured to be inserted into a recess formed in the fixed steering part when the button is not operated.
6 . The cleaner nozzle of claim 1 , wherein the locking part comprises: a pinion gear-engaged with at least one of the button and the stopper, and configured to transmit power of the button to the stopper.
7 . The cleaner nozzle of claim 6 , wherein the locking part comprises: a first pinion arranged at a first side of the pinion; a first pinion insertion recess recessed inward from one surface of the button and into which the first pinion is inserted; a first rack formed on only one surface of two inner surfaces of the button facing the first pinion; a second pinion arranged at a second side of the pinion; a second pinion insertion recess recessed inward from one surface of the stopper and into which the second pinion is inserted; and a second rack formed on only one surface which does not correspond to the first rack among two inner surfaces of the stopper facing the second pinion.
8 . The cleaner nozzle of claim 1 , wherein the locking part comprises: a transmission gear configured to transmit power of the button to the stopper; and a first guide protruding from a first surface of the transmission gear, connected to the button, and configured to rotate the transmission gear when the button is operated.
9 . The cleaner nozzle of claim 1 , wherein the locking part comprises: a transmission gear configured to transmit power of the button to the stopper; a second guide protruding from a second surface of the transmission gear, connected to the stopper, and configured to move the stopper when the transmission gear rotates.
10 . The cleaner nozzle of claim 1 , wherein the locking part comprises: a wire connected to the stopper; and a wire drum on which the wire is wound and which applies an external force to the stopper in a direction in which the stopper is pulled out.
11 . The cleaner nozzle of claim 1 , wherein the connection tube comprises: a first steering part hingedly coupled to the nozzle housing and configured to yaw the connection tube; a second steering part hingedly coupled to the first steering part and configured to pitch the connection tube; and a third steering part hingedly coupled to the second steering part and configured to roll the connection tube, wherein the fixed steering part is the third steering part.
12 . The cleaner nozzle of claim 11 , wherein the rotating steering part is the second steering part.
13 . The cleaner nozzle of claim 1 , wherein the button is inserted into the rotating steering part while being pressed by the button operating member during the operation of the button, and the stopper is pulled out from a recess formed in the fixed steering part while being inserted into the rotating steering part during the operation of the button.
14 . The cleaner nozzle of claim 13 , wherein a direction in which the button is inserted and a direction in which the stopper is inserted are opposite to each other.

Description

TECHNICAL FIELD The present disclosure relates to a cleaner nozzle and, more particularly, to a cleaner nozzle that sucks in dust from a floor surface by rotating two agitators. BACKGROUND ART A vacuum cleaner is a device that uses suction power generated from a suction motor mounted inside a cleaner body to suck in dust and air, and separates the dust from the air to collect the dust. A suction nozzle refers to a part that touches the floor and directly sucks in dust and air. The suction power generated from the suction motor mounted inside the cleaner body is transmitted to the suction motor, and the dust and air are sucked into the suction nozzle by this suction power. An agitator is installed in the suction nozzle. The agitator rotates to scrape away dust from the floor or carpet, improving cleaning performance. A cleaner head may rotate about a plurality of axes for steering. Hereinafter, the plurality of axes is defined assuming that a side to which the cleaner head moves forward is a front. Rolling refers to a state in which left and right ends of the cleaner head rotate up and down about a front-to-back axis thereof. Pitching refers to a state in which the front and rear ends of the cleaner head rotate up and down about a left-to-right axis thereof. Yawing refers to a state in which the left and right ends rotate forward and backward about a vertical axis. As prior art 1, Korean Patent No. 10-1814568 is presented. Prior art 1 relates to a cleaner head for a vacuum cleaner. According to prior art 1, the cleaner head is provided with a first debris opening, and a second debris opening arranged above the first debris opening. Accordingly, dust brushed off by the agitator is sucked into the cleaner body through the first debris opening or the second debris opening. According to prior art 1, a pitching axis and a yawing axis are arranged between the cleaner head and an extension tube. The cleaner body can rotate around the pitching axis to change height thereof and rotate around the yawing axis to change a lateral position thereof. In general, for left and right steering, the cleaner head performs either rolling or yawing. In prior art 1, the cleaner head performs yawing rather than rolling. When the cleaner head performs yawing, the cleaner head has the advantage of good maneuverability, but the disadvantage of poor straightness. The cleaner head according to prior art 1 has no configuration to resist movement about the yawing axis. Accordingly, when the floor surface is uneven, the cleaner head may often wobble, and as the cleaner head wobbles, the cleaner cannot move straight but turns to the left or right. Therefore, a user had to perform unnecessary operations to move the cleaner in a straight line. Even when the body of the cleaner according to prior art 1 is laid down as much as possible, the above problem becomes more severe. If the body of the cleaner is upright and an angle between the yawing axis and the ground is low, the cleaner can move forward to a certain extent due to the weight of the cleaner body even if the cleaner head wobbles. However, as the body of the cleaner is laid down and the angle between the yawing axis and the ground increases, the cleaner head wobbles violently about the yawing axis even if the cleaner head wobbles only slightly, and this is very inconvenient when narrow and low gaps are cleaned. Prior art 2 is disclosed in U.S. Patent Application Publication No. 2007-0174994.Prior art 2 is an invention relating to a cleaner head of a canister cleaner, and discloses the cleaner head having a rolling function and a pitching function. According to prior art 2, the invention relates to a cleaner in which the cleaner head can be fixed in a folded state centered on a pitching axis and mounted on the cleaner body, and the cleaner head is unfolded to perform cleaning. However, prior art 2 discloses a structure in which the cleaner head is folded and fixed when the cleaner is mounted after cleaning, and the cleaner head is unfolded and fixed when cleaning is intended to be done, but does not disclose a structure for selectively limiting the rolling or pitching of the cleaner in use, wherein the cleaner head performs only rolling, not yawing, so aside from the advantage of excellent straightness, the cleaner head has the disadvantage of poor operability. DISCLOSURE Technical Problem The present disclosure has been made keeping in mind the above problems occurring in the prior art, and an objective of the present disclosure is to provide a cleaner nozzle capable of laying a cleaner body and a pipe connecting the cleaner body and the cleaner nozzle close to the ground. In addition, an objective of the present disclosure is to provide a cleaner nozzle capable of reducing an output required for a motor while two agitators are rotated. In addition, an objective of the present disclosure is to provide a cleaner nozzle capable of preventing a large load from being applied to a motor due