baber/WOPTO huggingface dataset:
Patent KR-20100110931-A (KR)
Title: Method of hardening stability, brightness maintenance and color fastness improvement to laundering by multiplex pressure control heating of stamping foil article
Inventor: KIM HO NYOUN
IPC: D06C15/00
Filed: 2009-04-06
Abstract: PURPOSE: A method for improving the hardening stability, the glossiness, and the color fastness to washing by a multi-stage pressure-control heating operation in an stamping foil product coloring process is provided to prevent a patterning layer from being escaped in a washing process by performing five times multi-stage heating operations and pressure-control heating operations. CONSTITUTION: The temperature of a boiler is increased to 245 degrees Celsius in order to prepare an adhesive heating operation. The temperature of a drying furnace is multi-heated at 90 degrees Celsius, 120 degrees Celsius, 185 degrees Celsius, 185 degrees Celsius, and 130 degrees Celsius. The wind-speed of hot air is regulated to 10m/sec, 15m/sec, 15m/sec, 15m/sec, and 15m/sec successively according to a multi-heating stage. Pressure-control heating operations are performed successively with the pressure of -0.4psi, -0.2psi, -0.2psi, -0.2psi, and -0.4psi.
Patent KR-20100112382-A (KR)
Title: 의자 분리형 휠체어
Inventor: CHOI DONG GEUN
IPC: A61G5/14
Filed: 2009-04-09
Abstract: 본 발명은 거동이 불편한 환자나 노인을 위한 의자 분리형 휠체어에 관한 것으로, 방바닥이나 침대에 누운 환자나 노인을 휠체어에 태워 다른 장소로 이동하고자 할 때 기존의 휠체어는 의자가 휠체어 본체와 일체로 이루어져 있어 방 또는 침대 바닥과 휠체어의 의자 높이와의 단차가 심해 환자를 옮기는데 매우 어려웠던 문제점이 있었던 바, 본 발명은 휠체어 본체(100)로부터 의자(200)를 분리하고 휠체어 본체(100)에는 상기 의자(200)를 들어올림과 동시에 분리가능하도록 승강팔(370)을 갖는 승강수단(300)이 구비된 것으로, 휠체어에서 의자를 분리하여 환자가 있는 바닥에 놓고 의자 뒤에서 양손을 환자 겨드랑이에 넣고 의자 쪽으로 끌어당기면 환자를 의자에 앉힐 수 있고, 환자를 의자에 앉힌 상태로 휠체어를 의자 뒤에 대고 승강팔을 의자에 끼워 들어올림으로써 이동을 용이하게 할 수 있도록 한 것으로, 특히 하반신 마비나 중풍환자를 이동시키거나 배뇨 또는 배변시 편리하게 사용할 수 있다. 
     
     휠체어, 의자, 분리, 승강팔, 나선축
Patent KR-20090045179-A (KR)
Inventor: MIURA NAOTO
IPC: G06V40/12
Filed: 2009-04-13
Abstract: 본 발명의 목적은, 비접촉성이 요구되는 환경하에서의 개인 인증에 관한 것으로, 선명하지 않고 위치 어긋남이 있는 손가락 정맥 패턴 화상을 이용하면서도, 고정밀도의 개인 인증을 실현하는 것이다. 
     상기한 목적을 달성하기 위해서, 비접촉으로 손가락 정맥 패턴 화상을 획득하는 수단과, 획득된 화상에 포함되는 정맥 패턴을 추출하는 수법으로서 손가락의 윤곽을 이용하여 회전 보정을 행하는 수단과, 손끝을 기준으로 하여 손가락 화상의 위치를 정규화하는 수단과, 화상의 임의의 위치에서 임의의 길이만큼 휘도 지점이 어두운 부분을 찾아가는 것을 반복함으로써 통계적으로 전체의 정맥 패턴을 획득하는 수단과, 혈관 패턴에 강한 특징이 나타나 있는 부분만을 비교하는 매칭 수단과, 화상을 소영역으로 분할하고, 각 소영역마다 독립적으로 매칭을 행하여, 매칭되었을 때의 위치 어긋남량을 평가하는 수단을 설치한다. 
       
     손가락 정맥 패턴 입력 인터페이스, 광원, 광학 필터, CCD 카메라, 화상 캡쳐 보드, 손가락 삽입구, 인증 청구자, 자동 도어, 비밀 번호 입력 키, 지문 입력 인터페이스, 홍채 촬상 카메라
Patent KR-20100114657-A (KR)
Title: Wafer transferring robot arm
Inventor: RYU JEE HWAN
IPC: H01L21/677
Filed: 2009-04-16
Abstract: PURPOSE: A wafer transferring robot-arm is provided to minimize impacts applied to a wafer by supporting the wafer while the wafer is loaded on a robot-arm. CONSTITUTION: A wafer transferring robot-arm includes a loading stand(110), a block(120), and a guiding unit(130). The loading stand is expanded from one end of the robot-arm, and a wafer is loaded on the loading stand. The block is installed on one upper side of the loading stand and is curved into the same shape as the external edge of the wafer. The guiding unit is installed on the curved position of the block and supports the wafer. The wafer is arranged on the loading stand by the guiding unit.
Patent KR-20100115195-A (KR)
Title: Apparatus sensing shade and breaking down of solar photovaltaic power generation cell line/module/group and monitoring solar photovaltaic power generation amount and method thereof
Inventor: LEE YONG HAE
IPC: H02S50/00
Filed: 2009-04-17
Abstract: PURPOSE: An apparatus sensing shade and breaking down of a solar photovoltaic power generation cell line/module/group and monitoring solar photovoltaic power generation amount and method thereof are provided to allow a manager to monitor the operation state of a photovoltaic power generation system through USN(Ubiquitous Sensor Network). CONSTITUTION: In an apparatus sensing shade and breaking down of solar photovoltaic power generation cell line/module/group and monitoring solar photovoltaic power generation amount and method thereof, an USN(Ubiquitous Sensor Network) module is installed a cell line directly connected to a plurality of solar cells and is installed on a solar cell module comprised of a by-pass diode and a blocking diode. The USN module includes a measuring and correcting unit, an ADC unit, and a data processor.
Patent KR-20100116911-A (KR)
Title: Atomizer
Inventor: LEE SEONG JIN
IPC: A61L9/015
Filed: 2009-04-23
Abstract: PURPOSE: A spray for removing hazardous materials is provided which facilitates the attaching/detaching of a cover and the replacement of a container. CONSTITUTION: A spray for removing hazardous materials comprises: a receiving part in which a liquor container containing phytoncide is accepted and liquor flows from a container; an ultrasonic oscillator which is connected to the receiving part and atomizes the liquor; a base(10) which is arranged at the upper part of the ultrasonic oscillator and is equipped with a guide unit having an particle outlet; a supporter(20) which is combined with the rear end of the base and has a base aperture; and a cover(30) covering the guide unit and container accepted in the base receiving part.
Patent KR-20100117364-A (KR)
Title: Power source control system for street lamp
Inventor: NAM KEE YOUNG
IPC: H05B37/02
Filed: 2009-04-24
Abstract: PURPOSE: A power controlling system for a street lamp is provided to reduce time for fixing a broken street lamp by applying power to normal street lamps excluding the broken street lamp. CONSTITUTION: A plurality of street lamps is divided into a plurality of groups. Each group is composed of a first sub-group and a second sub-group. Cabinet panels are installed between the divided groups. The cabinet panels include a plurality of power switching parts. One power switching part controls the power of one sub-group. The abnormality of a street lamp is detected by the cabinet panels. Power is supplied to street lamps excluding a broken street lamp.
Patent KR-20100118007-A (KR)
Title: Apparatus for monitoring temperature of molten steel
Inventor: HAN JEONG WOOK
IPC: G01K13/02
Filed: 2009-04-27
Abstract: PURPOSE: An apparatus for monitoring the temperature of molten steel is provided to easily monitor whether the temperature of molten steel is maintained at the fixed temperature by automatically switching two thermometers. CONSTITUTION: An apparatus for monitoring the temperature of molten steel comprises a first thermometer(1), a second thermometer(2), a selective switching unit(3), and a controller(4). The first and the second thermometer measure the temperatures of molten steel in a first and a second tundish, respectively. The selective switching unit comprising a changeover switch(31), a first relay(32), and a second relay(33) selects one of the first and the second thermometer according to a switching signal. The controller displays the molten steel temperature which is input from the first or second thermometer selected by the selective switching unit.
Patent KR-20100121165-A (KR)
Inventor: CHOI MAN YONG
IPC: H04N5/64
Filed: 2009-05-08
Abstract: PURPOSE: A display device preventing the damage of a display module according to impact by a shock-absorbing unit is provided to minimize the deformation of the display module by reducing the impact about the display module. CONSTITUTION: A display device(1) includes a display module(30), a back cover and a shock-absorbing unit(50). The back cover is installed in the back side of the display module. The shock-absorbing unit is installed between the display module and the back cover. The shock-absorbing unit reduces the impact about the display module. One side of the shock-absorbing unit is fixed to the display module. The other side of the shock-absorbing unit is selectively touched with the inner surface of the back cover.
Patent KR-20100123357-A (KR)
Title: Method for manufacturing a tube plate of movable weir
Inventor: LEE CHOONG HWAN
IPC: B29C70/12
Filed: 2009-05-15
Abstract: PURPOSE: A method for manufacturing tube panels for a movable weir is provided to enable a tube panel for a large underwater weir to be easily manufactured in a small work workplace through a simple process using first and second rollers. CONSTITUTION: A method for manufacturing tube panels for a movable weir is as follows. A first polyurea resin is cured on a reinforcing fabric to manufacture a first panel and the first panel is wound on a first roller(102a). The first panel is fold in a width direction, is backstitched along a folded line, a bookend-type reinforcement(138) is formed and a second roller(102b) is wound. A adhering polyurea resin is sprayed to a adhering panel(140) and the panel is wound on the first roller again. A second polyurea resin(172) is applied on the top of the adhering panel and the panel is wound on the second roller(170). The second panel, which has been on the second roller, overturns and a third polyurea resin(192) is applied on the top of the second panel and the panel is wound on the first roller(190). The second panel is cut and a deflector(205) is formed(200).
Patent KR-20100126000-A (KR)
Title: Pusher of lcd glass carrier
Inventor: BYUN CHI YOUNG
IPC: G02F1/13
Filed: 2009-05-22
Abstract: PURPOSE: A pusher of an LCD glass is provided to prevent the damage of an LCD glass when closing a clamp by controlling the opening and closing operation of the clamp by partitioning a stroke in multiple steps. CONSTITUTION: A groove(13) is formed on the side of a clamp(20). A channel(103) is formed on a mainframe(101) along the longitudinal direction. A bolt(111) moves along the channel. A fixing plate(110) is fixed to the mainframe. A screw nut(113) is fixed and coupled to the bolt passing through the fixing plate.
Patent KR-20090064357-A (KR)
Title: Anisotropic conductive film and circuit board using the same
Inventor: MATSUDA KAZUYA
IPC: C09J7/02
Filed: 2009-06-02
Abstract: An anisotropic conductive film and a circuit board using the same are provided to show high insulating property in a narrow space and to improve contacting reliability in a minute contacting pitch. An anisotropic conductive film and a circuit board using the same comprise a first circuit member and a second circuit member. The first circuit member has a first contacting terminal. The second circuit member has a second contacting terminal. The first contacting terminal and the second contacting terminal face each other. The anisotropic conductive film is inserted between the first contacting terminal and the second contacting terminal. The first contacting terminal and the second contacting terminal are heated and pressurized to contact them electrically. The anisotropic conductive film consists of a first adhesive film layer and a second adhesive film layer containing thermosetting resin and a hardener thereof.
Patent KR-20100131800-A (KR)
Title: Organci light emitting display device and manufacturing method of the same
Inventor: PANG HEE SUK
IPC: H01L51/52
Filed: 2009-06-08
Abstract: PURPOSE: An organic electroluminescent display device and a manufacturing method thereof are provided to reduce a driving voltage by improving the roughness of first electrodes by forming a base layer of the first electrodes with an organic coating layer. CONSTITUTION: A transistor(T) is formed on a substrate(100a). A protection layer(140) is formed on the transistors. A color conversion filter(145) is formed on the protection layer. An inorganic layer(150) is formed on the protection layer. An organic coating layer(155) is formed on the inorganic layer.
Patent KR-20100132675-A (KR)
IPC: G01B3/20
Filed: 2009-06-10
Abstract: 본 발명은 압착형배관의 압착 상태를 검사하기 위한 검사게이지에 관한 것으로, 보다 상세하게는 압착형배관의 다양한 호칭에 대응하는 복수의 치수표시부를 통합하여 구비함으로써 압착형배관의 각 호칭에 대응하여 그 압착 상태를 보다 간편하게 검사할 수 있는 압착형배관용 검사게이지에 관한 것이다. 
     본 발명의 압착형배관용 검사게이지는, 길이방향으로 연장된 복수의 슬라이딩홈이 원주방향으로 배치되고, 각 슬라이딩홈에는 복수의 측정홈이 형성되는 검사본체; 상기 각 슬라이딩홈에 인접하여 형성되고, 상기 슬라이딩홈의 측정홈들에 대응하는 호칭이 표시된 치수표시부; 상기 검사본체의 일단에 회전가능하게 설치되고, 상기 검사본체의 일단에 회전가능하게 설치된 회전몸체 및 상기 회전몸체의 일측에서 연장되는 기준척을 가진 제1척유닛; 상기 검사본체의 타단에 원주방향으로 형성된 회전안내홈; 및 상기 회전안내홈을 통해 회전한 후에 복수의 슬라이딩홈 중에서 선택된 일측의 슬라이딩홈을 따라 슬라이딩이동하는 이동몸체 및 상기 이동몸체의 일측에서 연장되는 측정척을 가지는 제2척유닛;을 포함한다.  
       
     압착형배관, 압착, 검사게이지, 호칭, 척유닛
Patent KR-20090133085-A (KR)
Title: Resist composition for immersion exposure, method of forming resist pattern, and fluorine-containing polymeric compound
Inventor: SHIONO DAIJU
IPC: G03F7/004
Filed: 2009-06-19
Abstract: PURPOSE: A resist composition for immersion exposure, and a method for forming a resist pattern by using it are provided to prevent the deterioration of sensitivity, to improve a resist pattern shape and an aging stability in atmosphere, and to reduce the defect of a resist film. CONSTITUTION: A resist composition for immersion exposure comprises a [fluorine-containing polymer compound] having a unit having a base-dissociable group and a unit represented by the formula f2-1; a base component whose solubility in an alkali developer changes by the action of an acid; and an acid generator component which generates an acid by exposure, wherein R is H, a low molecular weight alkyl group, or a halogenated low molecular weight alkyl group.
Patent KR-20100137166-A (KR)
Title: Method of detecting the most suitable attachment place of rfid tag
Inventor: YUN JUNG MEE
IPC: G06K19/04
Filed: 2009-06-22
Abstract: PURPOSE: A method for detecting the most suitable attachment place of an RFID(Radio Frequency IDentification) tag is provided to detect the most suitable attachment place of an RFID tag on the surface of a product case moving on a conveyor. CONSTITUTION: A test is repeated as many as fixed times by changing an environment factor influencing a recognition rate of a tag(S130). A successful recognition rate of the tag is calculated(S140). An RFID reader calculates average times for recognizing the tag to calculate an average recognition rate of the RFID reader(S150). An optimized attachment location of a product case surface is selected using the successful recognition rate and the average recognition rate(S170).
Patent KR-20100137956-A (KR)
Title: Apparatus and method for alarming burglar of electronic shelf label
Inventor: CHOI JAE YEON
IPC: G08B13/00
Filed: 2009-06-24
Abstract: PURPOSE: An interrupt alarming apparatus of an electronic shelf label and a method of the same are provided to attach the electronic shelf label to accurate positions and rapidly respond occurred interruption. CONSTITUTION: A sensor unit(100) verifies whether an electronic shelf label is interrupted. When the electronic shelf label is interrupted, an interrupt generator(110) generates an interrupt signal. When the interrupt generator generates the interrupt signal, a communication module(120) generates an interrupt alarm. A controller(130) controls the generation of the alarm. A display unit(140) displays information with respect to products and displays the message of the alarm.
Patent KR-20100137969-A (KR)
Title: Removable ball for inside duct of ventilation unit
Inventor: HONG HYUN SUNG
IPC: B08B9/04
Filed: 2009-06-24
Abstract: PURPOSE: A dust removing ball of a cleaning apparatus for the inside of a ventilation duct and a cleaning method using the same are provided to remove hardened foreign matters, since projections or hitting pieces are formed at the leading end of multiple fiber brushes of a dust-removal ball. CONSTITUTION: A dust removing ball(320) of a cleaning apparatus for the inside of a ventilation duct cleans the inside duct with being transferred to a ball collector by a ball feeder. The dust-removal ball absorbs dust inside a connection pipe by static electric generated by friction. Synthetic resin fiber bristles(321) are implanted in a fixing sphere(322) of the dust-removal ball. Multiple protrusions(321-1) are attached on the leading end of the fiber brush.
Patent KR-20100138380-A (KR)
Title: A safety socket enabling to prevent medicine accident and an infusion bag kit including the socket
Inventor: KIM DONG SHIN
IPC: A61M5/14
Filed: 2009-06-25
Abstract: PURPOSE: A safety socket enabling to prevent medicine accident and an infusion bag kit including the socket is provided to prevent a nurse from being pricked by an injection needle. CONSTITUTION: A safety socket is comprised of a port connector(110), a connector(120). The port connector is combined with the inlet of a port of a solution of salt. The connector is combined with the inlet of the medicine bottle. The port connection comprises a planar section(112), a puncture needle(111), and a peripheral wall(113).
Patent KR-20100122038-A (KR)
Title: Leg of sink
Inventor: KIM JONG WON
IPC: A47B91/12
Filed: 2009-06-26
Abstract: PURPOSE: Legs of a sink are provided, which prevent legs from being easily damaged by a external force while transporting and loading a sink. CONSTITUTION: Legs of a sink comprise: an adhesion member(100) in which a plurality of cutting lines are formed in the circumference and a hollow insertion projection is perpendicularly projected in the upper face; a supporting member(200) in which a male screw part inserted into the hollow of the insertion projection is perpendicularly projected; and a female screw member(300) of a reverse cone cylindrical form which is inserted into the insertion projection of the adhesion member and expands the insertion projection.
Patent KR-20110002752-A (KR)
Title: 무게중심 이동이 자유로운 모빌
Inventor: HUH YUN
IPC: A63H29/08
Filed: 2009-07-02
Abstract: 본 발명은 아이들의 지능 개발을 위한 모빌에 관한 것이며, 
     여러 가지 모양의 장식에 자석이 부착되어 모빌에 탈부착이 용이하여 다양한 형상의 모빌을 연출할 수 있어 유아에게 흥미와 창작성을 유발시킬 수 있는 무게 중심 이동이 자유로운 모빌에 관한 것이다. 
     또한, 상기의 여러 가지 모양에 있어서 무게가 다르게 구성되고, 
     상기의 여러 가지 모양의 장식이 모빌에 부착이 되면 무게차를 중심에 맞추어 흥미를 느끼는 효과를 지니는 무게 중심 이동이 자유로운 모빌에 관한 것이다. 
     본 발명은 기존 유아용 모빌의 기능은 물론이거니와 아동용 완구, 악세사리, 인형 등을 자유롭게 교환하여 장식용 벽걸이와 광고 전시용 모빌로 활용할 수 있는 효과가 있다. 
       
     완구, 모빌, 무게중심, 자석, 스탠드
Patent KR-20110008723-A (KR)
Title: Novel organic electroluminescent compounds and organic electroluminescent device using the same
Inventor: KIM CHI SIK
IPC: C09K11/06
Filed: 2009-07-21
Abstract: PURPOSE: An organic electroluminescent compound is provided to ensure excellent luminous efficiency and lifetime property of materials and to prepare an OLED device with excellent driving durability of a device. CONSTITUTION: An organic electroluminescent compound is represented by chemical formula 1. In chemical formula 1, R1 - R10 are independently hydrogen, deuterium, halogen, substituted or unsubstituted (C1-C30) alkyl, substituted or unsubstituted (C6-C30) aryl, and one or more substituted or unsubstituted (C6-C30) aryl fused with substituted or unsubstituted (C3-C30) cycloalkyl; W is -(CR51R52)m-, -(R51)C=C(R52)-, -N(R53)-, -S-, -O-, -Si(R54)(R55)-, -P(R56)-, -P(=O)(R57)-, -C(=O)- or -B(R58)-; and m is 1 or 2.
Patent KR-20100011928-A (KR)
Title: System and method for enabling legacy medium access control to do energy efficient ethernet
Inventor: DIAB WAEL WILLIAM
IPC: H04L12/56
Filed: 2009-07-23
Abstract: PURPOSE: A system and a method for enabling legacy medium access control to perform energy efficient ethernet are provided to perform an EEE(Energy Efficient Ethernet) PHY function together with legacy MAC devices, thereby providing an EEE merit to existing legacy devices without overhaul of all devices. CONSTITUTION: A need for conversion of a physical layer is detected between different power consumption modes. A pause frame is generated in a physical layer device(406). The pause frame is transmitted from the physical layer device to a medium access control device(408). The pause frame indicates to reduce the amount of transmission traffics about the physical layer device to be suitable for the conversion of the physical layer device.
Patent KR-20110009961-A (KR)
Title: Lgiht emitting device
Inventor: JANG KEE YOUN
IPC: H01L33/60
Filed: 2009-07-23
Abstract: PURPOSE: A light emitting device is provided to control the directional angle of light by including a reflection projection part inside a reflection side. CONSTITUTION: A frame(110) has an opening. A light emitting diode(120) is arranged on the frame. A reflection plate(130) emits light by reflecting irradiated light from the light emitting diode. A reflection projection part determines the directional angle of light through the opening. The reflection projection part has a con shape. The bottom side of the cone is contacted with the inner side of the reflection plate.
Patent KR-20110011219-A (KR)
Inventor: IM CHANG MIN
IPC: F28D15/02
Filed: 2009-07-28
Abstract: 본 발명은 CPU, 반도체 등 발열부품의 열을 냉각하기 위한 히트싱크에 관한 것으로서, 더욱 상세하게는 발열부품으로부터 효과적으로 방열하여 성능을 지속시키기 위한 것을 목적으로 한다. 
     이러한 목적을 달성하기 위하여 본 발명은, 일측면 평면으로 형성되어 열원과 접촉하여 열을 빼앗는 베이스블럭과 상기 베이스블럭의 타측면에 형성되어 전달받은 열을 공기중으로 방출하기 위한 다수의 방열핀을 포함하는 히트싱크에 있어서, 상기 베이스블럭은, 유체로 된 냉매를 일시 수용하기 위해 상기 베이스블럭 내부에 형성된 냉매 홀 및 냉매의 유입 유출을 위해 상기 베이스블럭의 측면에 형성된 냉매 출입관이 구비된 것을 특징으로 한다. 
       
     발열부품, 방열, 히트싱크
Patent KR-20110018622-A (KR)
Title: Environmentally friendly folding humidifier
Inventor: LIM CHE RIN
IPC: F24F6/02
Filed: 2009-08-18
Abstract: PURPOSE: An environment-friendly humidifier is provided to prevent bacteria from propagating and to easily control a sprayed amount of moisture. CONSTITUTION: An environment-friendly humidifier performs humidification using a foldable frame(1) in a natural evaporation way. The foldable frame uses a rotary frame, and a towel or cloth is laid on the foldable frame. The environment-friendly humidifier comprises a water supply vessel. The moisture is provided from the water supply vessel to the towel or the cloth. The flow rate of the water, which is provided from the water supply vessel to the towel or the cloth, is controlled using a valve.
Patent KR-20090096677-A (KR)
Title: Wafer level package and manufacturing method thereof
Inventor: PARK SEUNG WOOK
IPC: H01L23/02
Filed: 2009-08-24
Abstract: A wafer level package and a manufacturing method thereof are provided to realize a thin package by manufacturing the package without a substrate. In a wafer level package and a manufacturing method thereof, a mold(150) protects a chip(130). A conductive adhesive is formed in a lower part of the chip, and an external connection member(170) is electrically connected to the lower part of the conductive adhesive. A re-distribution layer(160) is formed between the conductive adhesive, and the redistribution layer is made of a single layer or multi-layer. An under fill is formed at both side of the chip, and the external connection member is a solder ball.
Patent KR-20110021423-A (KR)
Inventor: YOON YEO JUNE
IPC: E06C1/04
Filed: 2009-08-26
Abstract: PURPOSE: A safety ladder stair is provided to improve spatial utilization by reduction in installation area of a ladder and to prevent accidents, since users move up and down on buildings, vehicles, and various structures. CONSTITUTION: A safety ladder stair comprises a rear body(10), a front body(20), a rear rotating unit(10a), a front rotating unit(20a), a footboard(30), a side footboard fixing unit(30a), a body gap fixing unit(40), and an automatic front body-folding unit(50). The front body is rotated and unfolded in the rear body. The rear rotating unit and the front rotating unit induce the rotation and unfolding of the front body. The footboard is unfolded with the front body unfolded the circulation in the stairs. The side footboard fixing unit fixes the footboard and rotates the front body in the rear body. The body gap fixing unit adjusts the rotation gap of the front body and the rear body. The automatic front body-folding unit controls front body to be automatically folded.