Lg Electronics Inc.

Samsung Display Co., Ltd.

Seoul National University

Sangik Lee

Byungmu Huh

Yooseok Kim

Minji Seo

Jeongyun Kim

Jeongrok Lee

Nari Lee

Woosuk Park

Seungjin Lee

Chulhee Lim

Woo Hong

Sunha Park

Yoonkyeong Lee

Jongho Park

Seaunglok Ham

Hyojin Won

Yongseok Kim

Donghyun Kim

Yongju Lee

Bumsang Lee

Youngwon Jeong

Jaeneung Jung

Hyunwoo Noh

Youngkook Seo

Hyojin Ko

Sangjo Kim

Hyemin Kang

Taeho Kim

Joon-Chul Goh

Jongchul Kim

Chulmin Lim

Jongyoun Shin

Youngjoo Lee

Hyoungwon Kim

Hwang Kim

Hyunsup Song

Young-soo Yoon

Yongjin Choi

Seungphyo Ahn

Suhyeong Park

Shinwoo Han

Soo Yeon Lee

Jaechul Lee

Woohee Kang

Yongho Shin

Taegyu Jin

Jaeheon Chung

Kyeong Soo Kang

Kyungmun Jung

Unggyu Min

Yookseok Kim

Beomsang Lee

A robot cleaner having a shielding module provided under a cleaner body is provided. The shielding module includes a cam and a hiding plate which rotate with the same phase angle about a same rotating shaft. The distance between the center of the hiding plate and the center of the rotating shaft is longer than the distance between a contact point on a cam surface of the cam and the center of the rotating shaft. A guide protrusion of a bumper is in contact with the cam surface at the contact point. Therefore, the rotation movement speed of the hiding plate which rotates to hide a cliff sensor is much faster than the inner movement speed of the bumper, thereby improving sensitivity to the detection of a collision between the bumper and an obstacle by using the cliff sensor.

Robot cleaner

The present invention relates to a robot cleaner and, more particularly, to a robot cleaner comprising: a main body forming the outer appearance; a suction unit provided in the main body; a dust collecting unit which is provided in the main body and collects dust introduced through the suction unit; a driving motor which provides rotating power to move the main body, and includes a driving shaft and a driving gear coupled to one end portion of the driving shaft; a driving wheel rotating according to driving of the driving motor; a deceleration gear unit which connects the driving motor to the driving wheel and transmits the rotating power generated by the driving motor to the driving wheel; a first housing which is coupled to the driving motor and covers at least a part of the driving wheel; and a second housing which is provided between the driving wheel and the first housing to be respectively coupled to the driving wheel and the first housing, and has a wheel accommodation unit provided at one side thereof for accommodating the driving wheel, and a gear accommodation unit provided at the other side for accommodating the deceleration gear unit. The first housing may be fixed by being coupled to the driving motor, and the second housing and the driving wheel coupled to the second housing may be provided to pivotably rotate together by using, as a rotary shaft, a gear shaft of a deceleration gear included in the deceleration gear unit.

Disclosed is a robot cleaner including a main body for forming an exterior of the robot cleaner, each wheel cover detachably disposed in the main body, each driving module movably coupled to each wheel cover, and each wheel coupled to each driving module and rotated by receiving a driving force from each driving module, wherein each wheel includes a wheel body coupled to each driving module and forming an appearance of each wheel, a plurality of treads arranged to be spaced apart from each other along a circumferential face of the wheel body, and a plurality of ribs respectively disposed between the treads and protruding radially outward of each wheel.

Disclosed is a cleaning unit comprising a variable brush portion. The cleaning unit according to an embodiment of the present invention comprises a shaft capable of reciprocating along an axial direction, wherein a first cam protrudes from the outer circumferential surface of the shaft. In addition, the brush portion is arranged on the outer circumferential surface of a body member surrounding the shaft, and the brush portion includes a second cam engaged with the first cam. When the shaft is moved in the axial direction, the first cam pushes the second cam in a radial direction, whereby the brush portion may protrude in the radial direction. That is, as the shaft reciprocates in the axial direction, the length of the brush portion protruding from the outer circumferential surface of the body member may vary.

Cleaning unit comprising agitator

The present invention relates to a robot cleaner. The robot cleaner comprises: a cleaner body equipped with a driving wheel; and a cleaning nozzle mounted inside a downwardly open opening portion in a lower portion of the cleaner body so as to be able to ascend and descend. The cleaning nozzle can be supported by a plurality of ascending/descending guides and a plurality of auxiliary ascending/descending guides so that the cleaning nozzle can ascend and descend relative to the cleaner body according to changes in the height of a cleaning surface on which the cleaner body travels. Accordingly, the cleaning to nozzle rises upon being pressed by a compressible floor such as a carpet, thus solving the problem of the cleaning nozzle catching on the cleaning surface. Therefore, travel performance can be improved, and the load on a brush driving part can be reduced.

Robot cleaner with ascending/descending guides

Television receiver

The present invention relates to a robotic cleaner comprising: a cleaner body which has a plurality of guide holders provided therein and performs self-driving; and a suction nozzle which receives an agitator therein, has guide protrusions longitudinally protruding from both sidewalls thereof toward the plurality of guide holders and received in the plurality of guide holders, respectively, and is up-and-down movably and back-and-forth swingably mounted to the cleaner body, whereby the driving performance and cleaning performance of the cleaner can be improved.

Robotic cleaner

A cleaner capable of adjusting tension of a belt to connect or disconnect power between a motor and a wheel in the cleaner including the belt transmitting a driving force of the motor to the wheel is provided. A cleaner according to the present disclosure includes a cleaner body, a wheel which movably supports the cleaner body with respect to a floor, a traveling drive motor which is disposed in the cleaner body, a first pulley which is rotated by a driving force of the traveling drive motor, a second pulley which is rotated when the first pulley rotates and rotates the wheel, a belt which connects the first pulley and the second pulley, and a clutch which adjusts tension of the belt to connect or disconnect power between the first pulley and the second pulley.

Cleaner with clutch for motor engagement

The present invention relates to a dishwasher. The dishwasher according to the present invention includes a tub for providing a washing space, a rack for accommodating dishes in the tub, a spray nozzle for spraying wash water toward the dishes accommodated in the rack, a sump for supplying the wash water to the spray nozzle, a pump for pumping the wash water stored in the sump to the spray nozzle, a supply pipe connecting the sump and the spray nozzle, and an air jet generator disposed in a supply flow path formed by the supply pipe to suck outside air to the wash water flowing along the supply pipe and crush the air to thereby form air bubbles.

Dishwasher

A cleaner including: a main body having a first connection flow path which is formed in an outside thereof; and a nozzle having a suction port through which air is introduced: wherein the nozzle comprises: a case in which the suction port and a second connection flow path are formed, the second connection flow path which is hooked to the first connection flow path, a push button able to linearly move through one surface of the case in a predetermined pressing direction; and a detachment unit mounted in the case to be rotated about a rotating shaft positioned in a direction parallel to the pressing direction, and interlocked with the push button to release hook coupling of the first connection flow path and the second connection flow path when rotating.

Cleaner

A robot cleaner includes a main body that autonomously travels, a suction nozzle configured to move up and down or swing with respect to the main body, and a support to support the suction nozzle. The robot cleaner may respond to a change in a height of a floor to improve travel performance and may respond better to obstacles. Even when a height difference of the floor is large, cleaning performance may be improved by maintaining contact and increasing a suction pressure of the suction nozzle.

A display device includes a display panel, a scan driver, a data driver, a sensing circuit, and a controller configured to select a pixel row from a plurality of pixel rows in a vertical blank period of each frame period. The vertical blank period includes a sensing time in which the sensing circuit performs a sensing operation for the selected pixel row. The sensing circuit measures a first source voltage of a driving transistor of each pixel in the selected pixel row at a first time point of the sensing time, and measures a second source voltage of the driving transistor at a second time point of the sensing time. The controller predicts a current saturated source voltage of the driving transistor based on the first and second source voltages, and determines a threshold voltage change amount of the driving transistor based on a difference between a previous saturated source voltage and the current saturated source voltage.

Display device and method of sensing a threshold voltage

The present invention provides a cleaning unit, comprising: a columnar body part having a rotation guide opening formed on the outer circumferential surface thereof; a shaft installed to reciprocate a predetermined distance in the longitudinal direction thereof in a hollow formed in the body part; a drive part that protrudes from the shaft in the radial direction thereof; a brush part that has one side installed on the outer circumferential surface of the body part along the longitudinal direction thereof and rotates on the basis of the one side as a rotation axis; and a driven part that extends from the brush part toward the drive part, passes through the rotation guide opening, and is inserted into a rotation guide groove formed in the drive part. The rotation guide groove extends at a predetermined angle with respect to the longitudinal direction of the shaft, and as the shaft reciprocates, the driven part is guided to rotate by means of the rotation guide groove, and the brush is rotated by means of the rotation of the driven part. The cleaning unit may include a robot cleaner or a cleaner operated by means of a user's operation.

Cleaning unit having agitator

Growing community of inventors

Seoul, South Korea

Sangik Lee