baber/WOPTO huggingface dataset:
Patent KR-20160129290-A (KR)
Title: Liquid crystal display device
Inventor: PARK JEONG HWAN
IPC: G02F1/1339
Filed: 2015-04-30
Abstract: In the preset specification, a display device is disclosed. The display device comprises: a TFT array substrate; a column spacer arranged on the TFT array substrate; and an opaque material layer positioned under the column spacer, being in contact with a lower surface of the column spacer, and composed of an opaque material having a refractive index different from that of the column spacer.
Patent KR-20150120891-A (KR)
Inventor: JOO CHUL MIN
IPC: G01N21/25
Filed: 2015-05-06
Abstract: The present invention relates to a high throughput label-free cell assay system capable of observing the structural variation of cells by scanning the lower part of a medium formed of a glass with an objective lens and a Galvano mirror using a wideband laser as a light source, assaying and projecting the light returned by being reflected in the lower part of the medium using a spectrometer, measuring interference spectrum formed of the light returned by being reflected in each interference of the medium glass in the spectrometer, and then measuring a phase in the data formed by Fourier-transforming the measured interference spectrum. The label-free cell assay system comprises: a transparent medium on which a sample is placed having a transparent bottom; an objective lens positioned under the transparent medium; a Galvano mirror positioned under the objective lens, having two mirrors to emit light introduced from a wideband light source through an optical fiber coupler in accordance to the rotation of the two mirrors, and emitting the light returned from the transparent medium through the objective lens to the optical fiber coupler; the optical fiber coupler to transmit the light introduced from the wideband light source to the Galvano mirror and then to transmit the light introduced from the Galvano mirror to a spectrometer; and the spectrometer to output an image by detecting the spectrum of the light introduced from the optical fiber coupler and to output an image of the interference spectrum formed by causing interference with the sample and the transparent medium. The image of the interference spectrum is an image acquired by reflecting the light introduced into the transparent medium through the objective lens in the sample and then causing the interference using a boundary between the sample and the transparent medium.
Patent KR-20160135976-A (KR)
Inventor: PARK TAE HYUNG
IPC: G06Q50/30
Filed: 2015-05-19
Abstract: The present invention relates to a mobile communication terminal for providing a valet parking service and a method thereof. The present invention provides a mobile communication terminal for providing a valet parking service at a place that a driver selects without limitation of a place and a method thereof. The mobile communication terminal comprises: a memory unit configured to store access information of a valet parking service providing server; an information receiving unit configured to receive service registration information; a camera unit configured to generate vehicle appearance image data; a wireless communication unit configured to transmit the vehicle appearance image data to the valet parking service providing server; and a control unit.
Patent KR-20160137267-A (KR)
Inventor: PARK YONG WAN
IPC: B60Q9/00
Filed: 2015-05-22
Abstract: 본 발명은 장애물 인식 장치에 관한 것으로, 장애물 후보영역을 검출하고, 상기 후보영역에 대해서만 장애물 표면의 거리정보를 검출함으로써 데이터 처리량을 최소화하고, 응답시간을 감소시켜 실시간으로 장애물의 형태 및 종류를 인식할 수 있는 장애물 인식 장치를 제공할 수 있다.
Patent KR-20160139136-A (KR)
Title: Method for Controlling Bluetooth of Cigar Jack
Inventor: SHIN SUNG CHUL
IPC: H04W12/06
Filed: 2015-05-26
Abstract: The present invention relates to a Bluetooth control method for a cigar jack. According to the present invention, the Bluetooth control method, executed through a program of a terminal with a Bluetooth communication function, includes: a first step of performing Bluetooth communication with a Bluetooth module of a cigar jack paired through a Bluetooth-based pairing procedure; a second step of generating beacon setting information to control the transmission of a specific beacon signal through the Bluetooth module of the connected cigar jack; a third step of providing the beacon setting information to the Bluetooth module of the cigar jack through the communication connection; a fourth step of determining whether the beacon signal, corresponding to the beacon setting information, is being transmitted or not through the Bluetooth module of the cigar jack; and a fifth step of outputting information in response to the transmission or suspension of the specific beacon signal.
Patent KR-20160139572-A (KR)
Title: 전기 통전 방식의 지그 장치 및 자동차용 판재 성형 방법
Inventor: KIM DONG OK
IPC: B21D22/02
Filed: 2015-05-28
Abstract: 본 발명은 가열로 인한 판재의 열팽창량을 보상할 수 있는 전기 통전 방식의 지그 장치 및 자동차용 판재 성형 방법에 관한 것으로서, 자동차용 판재의 일부분을 지지할 수 있는 제 1 클램프; 상기 자동차용 판재의 타부분을 지지할 수 있는 제 2 클램프; 상기 자동차용 판재에 전류가 흐를 수 있도록 상기 제 1 클램프 및 상기 제 2 클램프 사이에 전위차를 발생시키는 제 1 전기공급부; 상기 자동차용 판재의 열팽창에 따라 상기 제 1 클램프 또는 상기 제 2 클램프를 이동시키는 이동장치; 및 상기 자동차용 판재의 팽창 정도에 따라 상기 이동장치에 이동 제어 신호를 인가하는 제어부;를 포함할 수 있다.
Patent KR-20160141128-A (KR)
Inventor: MOON IN HYUK
IPC: A61H1/02
Filed: 2015-05-28
Abstract: The present invention relates to a wrist joint rehabilitation robot for continuously performing rehabilitation to prevent contraction of a wrist joint when upper limb hemiparalysis occurs due to an accident or cerebral apoplexy. The wrist joint rehabilitation robot comprises: a pair of supports (110) disposed to be separated with a predetermined interval therebetween; a guiderail (120) disposed to be separated at a predetermined interval between the supports (110); a support table (130) sliding-coupled with the guiderail (120); a support table (130) sliding-coupled with the guiderail (120); and a wrist exercising device (140) installed in the top of the support table (130), supporting the wrist, and operating to enable wrist folding/spreading exercise or wrist inner rotation or outer rotation exercise to be performed. Accordingly, upper limb hemiparalysis is alleviated.
Patent KR-20160139642-A (KR)
Title: Plasma Apparatus Comprising Magnetic Flux Confinement Part
Inventor: UHM SAE HOON
IPC: H05H1/46
Filed: 2015-05-28
Abstract: The present invention provides a plasma generation device and a plasma generation method. The plasma device comprises: a dielectric discharge tube in a cylindrical shape; an induction coil arranged to surround the dielectric discharge tube and configured to generate an induction electric field to generate plasma inside the dielectric discharge tube; a flux confinement part arranged around the induction coil to confine a magnetic field generated by the induction coil; and an alternating current power supply unit configured to supply power to the induction coil.
Patent KR-20160141347-A (KR)
Inventor: CHOI HANG SEOK
IPC: C10L1/02
Filed: 2015-05-31
Abstract: 본 발명은 바이오매스 급속열분해를 위한 순환유동층 열분해 장치 및 이를 이용한 바이오오일 제조방법에 관한 것으로서, 순환유동층은 기포유동층에 비해 높은 유속에서 운전되는 유동층으로 다양한 원료(큰 입자크기, 불규칙한 형상)에 대하여 적용할 수 있고, 반응기 내 생성되는 char를 유동매질과 함께 순환시켜 반응기 내에서 신속하게 제거하여 촤로 인하여 생기는 2차 반응을 억제할 수 있는 장점이 있고, 유동매질 재순환부에 촤 연소기를 결합함으로써 급속열분해 시 생성되는 부산물인 촤를 연소하여 발생되는 열을 보조열원으로 사용하며, 발생되는 연소가스를 순환유동층으로 공급하여 운전비용 절감을 달성할 수 있고, 다양한 원료에 대해 적용이 가능하기 때문에 다양한 산업현장에서 활용도가 클 것으로 보인다.
Patent KR-20160143162-A (KR)
Title: Retractor block wearable devices
Inventor: LEE JIN WOO
IPC: H04M1/02
Filed: 2015-06-04
Abstract: The present invention relates to a retractable wearable device which allows a user to conveniently talk on the phone with the other person by using a retractable earphone unit, which comes in contact with an earhole of the user by being worn on a finger of the user and being separated from a wearable device, which is wirelessly linked with a portable terminal such as a smartphone or a tablet PC by being worn on a body part of the user such as a wrist or the neck. Thus, the user does not need to frequently take the portable terminal out from a bag or the like in order to talk on the phone with the other person, or to always wear the retractable earphone unit on an earhole since the user can carry around the wearable device by conveniently inserting the retractable earphone unit into the wearable device after finishing the conversation on the phone with the other person. The retractable wearable device of the present invention comprises: a wearable device; a retractable earphone unit; and a connecting line.
Patent KR-20160144056-A (KR)
Title: 선단 보강형 융합말뚝
Inventor: WIE JOON SOO
IPC: E02D5/44
Filed: 2015-06-08
Abstract: 본 발명은 외주면에 날개부재가 경사지게 보강·부착된 강관파이프를 지지력에 따라 일반 또는 PHC 말뚝이나 강관말뚝에 결합한 선단 보강형 융합말뚝에 대한 것으로, 더욱 상세하게는 돌출된 날개부재로 인하여 말뚝 선단 면적이 증가하여 회전 구속 효과와 인발 저항 효과가 추가적인 저항력으로 작용하여 지지력과 침하 방지, 동하중에 대한 저항 효과가 우수한 선단 보강형 융합말뚝에 대한 것이다. 
본 발명의 선단 보강형 융합말뚝은 하단부에 좌판이 결합된 말뚝 및 상기 말뚝의 좌판 하단에 결합되는 강관선단부로 구성되되, 상기 강관선단부는 말뚝의 좌판 하부에 결합되는 강관파이프; 및 상기 강관파이프 외주면에 일정 각도 경사지게 결합되는 날개부재로 구성되는 것을 특징으로 한다.
Patent KR-20160147105-A (KR)
Inventor: RYU HYUNG KYU
IPC: G02B3/00
Filed: 2015-06-11
Abstract: 본 발명은 잉크젯 프린터를 이용한 유색 렌즈의 제조 방법에 관한 것이다. 
본 발명에 의한 잉크 도료의 제조 방법 및 이를 이용한 유색 렌즈의 제조 방법은 수지와 염료를 포함하는 잉크 도료를 준비하는 단계와 잉크젯 프린터를 사용하여 광학 렌즈 기판에 잉크 도료를 도포하는 단계와 도포 되어진 잉크 도료를 건조하는 단계를 포함하는 것을 특징으로 한다.
Patent KR-20160149744-A (KR)
Inventor: LEE HEE MIN
IPC: F21W101/10
Filed: 2015-06-19
Abstract: The present invention relates to an automotive lamp and, more specifically, relates to an automotive lamp, which provides an additional visual effect by enabling light to be penetrated through a bezel. According to an embodiment of the present invention, the automotive lamp comprises: a light source unit irradiating light; a first light penetration unit emitting first penetration light by enabling light to be penetrated; and a second light penetration unit arranged to be adjacent to the first light penetration unit to emit second penetration light by enabling the light to be penetrated.
Patent KR-20170000111-A (KR)
Inventor: LEE JAE HYUK
IPC: H04W4/02
Filed: 2015-06-23
Abstract: The present invention relates to a parking control system for interworking with a smartphone using a QR code (quick response code). The QR code installed in a parking lot is photographed by using a smart phone. The position of a vehicle, the state of the vehicle, and the like can be checked in real time. The parking control system includes a license plate recognition camera, a server computer, a parking lot camera, a breaker, a management operation computer, and a parking guide display board.
Patent KR-20170008102-A (KR)
Inventor: KIM JIN GYUN
IPC: A23F5/24
Filed: 2015-07-13
Abstract: 본 발명은 차가버섯을 주재료로 해서 건강식품을 조성 및 제조한 차가버섯을 이용한 건강식품 및 그 제조방법을 제공코자 하는 것으로서, 상기 본 발명은 차가버섯을 상온 또는 저온에서 숙성 발효시켜서 차가발효수를 조성 및 제조하고, 차가발효수에 건강에 유익한 각종 기능성물질을 투입하여 건강증진액을 조성 및 제조하며, 상기 차가발효수나 이를 이용한 건강증진액을 이용하여 볶은 원두분말을 드립해서 더치커피를 제조할 수 있도록 함을 특징으로 하며, 이에 의하면 차가버섯에 포함된 각종 효능과 더불어서 숙성 발효에 의해서 생성되는 효능을 동시에 제공하여 보다 향상된 건강증진효과를 발휘하며, 더불어서 발효에 의해서 변질이 잘 일어나지 않아서 보관성이 우수하며, 상기 차가발효수에 단풍마, 그라비올라, 인진쑥, 가시오가피, 음양곽, 생두, 모닝가 등의 건강 기능성물질을 첨가하여 건강증진액을 조성 및 제조할 수 있어서 각 기능성물질이 갖는 효능을 더할 수도 있으므로 건강증진효과를 보다 극대화시킬 수 있으며, 건강에 좋은 커피를 제공할 수 있는 등 다수의 효과를 기대할 수 있는 것이다.
Patent KR-20170008429-A (KR)
Title: 독립형 태양광패널 육상 구조물
Inventor: KIM CHANG HYUN
IPC: H02S20/10
Filed: 2015-07-14
Abstract: 본 발명은 독립형 태양광패널 육상 구조물에 관한 것으로, 지형이 일정치 않은 사면 비탈길 및 협소한 장소에 독립적으로 설치가능하고, 내부공간부를 형성하여 무게는 가벼우면서 설치 시 현지에서 손쉽게 구할 수 있는 물이나 모래 자갈로 자체 중량을 증가시켜 안정적인 설치를 가능케 하는 것은 물론, 서로 다른 높이 차를 갖는 연장부와 돌출지지부를 통해 태양광패널의 기본 경사각도를 결정하고, 더불어 상호 간 뒤집어 최소의 부피로 적층 가능하도록 하여 물류비를 최소화할 수 있는 것을 특징으로 한다.
Patent KR-20170013681-A (KR)
Title: 휴대 용기용 포장장치
Inventor: JO SOO HYUN
IPC: B65B7/16
Filed: 2015-07-28
Abstract: 본 발명은, 휴대 용기가 거치되는 안착홀부가 구비되고 상기 안착홀부를 커버하도록 펼쳐지는 커버부재가 수납되는 본체; 상기 안착홀부에 착탈 가능하게 설치되고 휴대 용기의 테두리가 거치되는 지지부재; 상기 본체의 힌지부에 회전 가능하게 설치되고 커버부재를 휴대 용기의 테두리 측으로 가압하는 가압부; 상기 가압부에 설치되고 커버부재를 가열하여 휴대 용기 테두리에 융착시키는 가열패널; 및 상기 지지부재가 상기 안착홀부로부터 분리되는 것을 방지하는 이탈방지부를 포함하는 것을 특징으로 한다.
Patent KR-20170014192-A (KR)
Title: Device for tightening string of shoes
Inventor: KIM SIN
IPC: A43C7/08
Filed: 2015-07-29
Abstract: The present invention relates to a device for tightening strings of shoes, in which an inclination angle is formed in a body of the device such that the device is placed at the angle on a tongue portion of the shoes, thereby preventing the strings of the shoes from being released by external force. To this end, according to the present invention, a device for tightening strings of shoes includes a body, a moving tooth member, and a manipulation member. The body includes a front surface and a rear surface which face to be spaced apart from each other. The front surface is formed therein with an elastic bar, a coupling hole, a moving groove, and left and right grooves. The rear surface has a protrusion. The body includes a pair of sidewalls formed at left and right sides while facing each other. The body has a lower portion and an upper portion. In the lower portion, provided is an inlet having an open shape allowing the strings from being introduced into the body. In the upper portion, provided is an outlet having an open shape allowing the strings, which are introduced into the body, to be withdrawn out. The moving tooth member is received in the body, coupled to an inner part of the body to vertically be movable, formed on an outer surface thereof with a tooth part, and formed in the central portion thereof with a coupling hole. The manipulation member includes a protrusion rod and a protrusion to be coupled to a coupling hole of the moving tooth member. An inclined surface having a predetermined angle is formed on a bottom surface of the body.
Patent KR-20170015685-A (KR)
Title: Bacillus subtilis SCM146 strain from traditional soy sauce having antimicrobial activity against pathogenic microorganism of soy sauce, antioxidant activity and enzyme secretion activity, and not producing biogenic amine and uses thereof
Inventor: JEONG SU JI
IPC: A23L29/00
Filed: 2015-07-30
Abstract: The present invention relates to a traditional fermented paste-derived Bacillus subtilis SCM146 strain (KACC81005BP) which has an excellent antibacterial activity, antioxidant activity, and an extracellular enzyme secreting function with respect to harmful microorganisms and does not generate biogenic amine; to an antibacterial microbial formulation with respect to fermented paste harmful microorganisms, wherein the antibacterial microbial formulation comprises the Bacillus subtilis SCM146 strain or a culture medium thereof as an active ingredient; to food including the Bacillus subtilis SCM146 strain; and to a method for controlling fermented paste harmful microorganisms, wherein the method comprises a step of treating the Bacillus subtilis SCM146 strain or the culture medium thereof in fermented paste.
Patent KR-20170014913-A (KR)
Inventor: YU YOUNG UK
IPC: H04N7/18
Filed: 2015-07-31
Abstract: 본원 발명의 주차장 차량 출입 관리시스템은, 주차장으로 진입하는 차량의 출입을 물리적으로 제어하는 차단바의 일부분에 일정한 간격을 두고 설치되며, 전방에 위치한 상기 차량을 감지하는 센서를 내장하고 있는 차단바 장착센서부; 상기 장착 센서부에 장착된 센서로부터 입력받은 센싱 신호를 기초로 차량의 진입여부를 판단하는 센서 신호처리부, 상기 센서 신호 처리부의 신호에 기초하여 출입노면 영역으로 출입하는 상기 차량의 형상 및 차량번호판을 촬영하는 출입차량 촬영부; 및 센서의 동작 조건 설정신호를 입력받는 통신부를 포함하는 다중센서 차량번호판 입력제어부; 상기 출입차량 촬영부에서 획득한 차량영상을 전송받아 저장하고, 차량번호 인식엔진을 통해 저장된 차량영상으로부터 차량번호를 추출하는 차량번호 인식 및 저장부를 포함하는 기술을 제공함에 기술적 특징이 있다.
Patent KR-20170019892-A (KR)
Inventor: KIM DO HYUNG
IPC: H04L27/227
Filed: 2015-08-13
Abstract: Provided are a semiconductor device and a communication system including the same. The semiconductor device includes: a reference clock generating unit generating a reference clock; a phase-locked loop (PLL) provided with the reference clock and generating a first clock different in frequency from the reference clock; an integer divider generating a second clock by delaying, from a rising edge of the reference clock, the value that is obtained by multiplying a phase interval by an integer value determined in advance and included in transmission data; and a processing unit generating a first transmission signal phase-shifted from an initial rising edge of the second clock. The phase interval is determined by the use of the ratio between the frequency of the first clock and the frequency of the reference clock.
Patent KR-20160037069-A (KR)
Inventor: MOON SUNG HYUN
IPC: H04B7/04
Filed: 2015-08-13
Abstract: The present invention relates to a method and an apparatus for transmitting a channel state information reference signal. A base station includes multiple first resource elements (REs) corresponding to at least two of second, third, and fourth orthogonal frequency division multiplexing (OFDM) symbols of a first time slot into a first CSI-RS resource pool that is set in a first sub-frame including the first time slot and a second time slot subsequent to the first time slot. The base station performs CSI-RS transmission by using at least one of the REs included in the first CSI-RS resource pool.
Patent KR-20170021639-A (KR)
Title: Hierarchical Network-On-Chip Device
Inventor: CHANG JUNE YOUNG
IPC: G06N3/06
Filed: 2015-08-18
Abstract: Embodiments of the present invention relate to a network-on-chip device. A hierarchical network-on-chip device according to an embodiment of the present invention includes a plurality of core clusters which includes a highest router for determining a data transmission path; an intermediate router for relaying data transmission according to the determined data transmission path; and a lowest router connected to the plurality of cores. The highest router, the intermediate router, and the lowest router may be connected in a tree structure. According to embodiments of the present invention, a network-on-chip device having a high data transfer rate, small area, and low power consumption can be realized.
Patent KR-20170022471-A (KR)
Title: Manufacturing method of functional food made from shellfish
Inventor: HWANG MAN JAE
IPC: A23L17/40
Filed: 2015-08-20
Abstract: The present invention relates to a method for producing a functional food by using shellfish having benefits to a human body and having various effects. The method of the present invention comprises: a raw ingredients preparing step of obtaining fresh shellfish raw ingredients, and storing the same at a low temperature; a washing step including a first washing process of firstly washing the raw ingredients prepared by the raw ingredient preparing step in salt water, a second washing process of secondly washing the raw ingredients from the first washing process in an aeration tank, and a third washing process of thirdly washing the ingredients by using refined water for 3-5 times; a steaming step of steaming the raw ingredients washed through the washing step at 100-110C for 20-40 minutes; a homogenizing step of homogenizing the raw ingredients steamed in the steaming step by using a homogenizer for 10-25 minutes; an extracting step of extracting the raw ingredients by hydrating the homogenized raw ingredients at a weight ratio of 1:80-100 at 85-110C for 6-10 hours; an aging step of aging an extracted extract at 75-85C for 4 hours; a concentrating step of concentrating the aged extract at 90-110C for 4-8 hours; and a drying step of performing freezing drying or spraying drying at -80 to 45C for 4-12 hours. According to the present invention, the original effects and nutrients of shellfish are provided, and the functional food of the present invention can be very easily consumed or eaten. Thus, repulsion or a feeling or irritation is minimized, so men and women at all ages can easily consume the functional food. Accordingly, the palatability and the base expansion of the functional food using shellfish can be improved, and multiple other effects can be expected.
Patent KR-20170022741-A (KR)
Title: Battery module
Inventor: LEE JUNG HOON
IPC: H01M2/10
Filed: 2015-08-21
Abstract: The present invention discloses a battery module having improved cooling performance and improved volume ratio and capable of reducing the weight and cost. The battery module according to the present invention comprises: a plurality of pouch-type secondary batteries which are configured that boundaries of a left pouch and a right pouch respectively having a concave-shaped accommodating unit are sealed with each other, accommodate an electrode assembly and an electrolyte in the accommodating unit, and arranged to each other in the horizontal direction, while standing in the vertical direction; and a cooling member consisting of thermally plate-shaped conductive materials, disposed on an upper portion of a secondary battery, and coming into contact with an upper surface of the left pouch and an upper surface of the right pouch, respectively.
Patent KR-20170026755-A (KR)
Title: Display apparatus
Inventor: LEE SANG CHUL
IPC: G02F1/1345
Filed: 2015-08-27
Abstract: A display apparatus includes: a display panel which includes a switching element, a first substrate including a pixel electrode electrically connected to the switching element, and a second substrate facing the first substrate; and a display panel driving unit which includes a data driving chip which is extended along a first direction and applies a data signal to a data line of the display panel electrically connected to the switching element and a gate driving chip which is stacked on the data driving chip, is extended in a second direction across the first direction, and applies a gate signal to a gate line of the display panel electrically connected to the switching element. Accordingly, the present invention can reduce processing time and obtain a narrow bezel width.
Patent KR-20160027928-A (KR)
Inventor: MIURA SHIGEHIRO
IPC: H01L21/311
Filed: 2015-08-28
Abstract: The present invention relates to a substrate processing method. A substrate is placed on a turntable installed in a process chamber. The process chamber comprises a process area to which an etching gas is supplied and a purge area to which a purge gas, not an etching gas, is supplied. The process area and the purge area are arranged along a rotational direction of the turntable and divided from each other. The etching gas is supplied into the process area. The purge gas is supplied into the purge area. The turntable rotates to cause the substrate to pass the process area and the purge area once per a revolution, respectively. A film formed on a surface of the substrate is etched when the substrate passes the process area. An etching rate of etching the film or surface roughness of the film after etching is controlled by changing a rotational speed of the turntable.
Patent KR-20150110446-A (KR)
Inventor: KANG SOO MIN
IPC: B02C18/16
Filed: 2015-09-11
Abstract: The present invention relates to an installation structure of rotation shaft bearing of a food pulverizer, regarding a an installation structure of a rotation shaft bearing of a food pulverizer, which comprises: a pulverizing device unit (3) installed on a frame (2) installed on a support plate (1); the crushing device unit (10) installed to be rotated and supported a rotation shaft (7) by front and rear shaft support units (8,9) with a impeller casing (5) and a pulverizer container (6); and an impeller (10) and a plurality of pulverizing cutters (11) on the rotation shaft (7). The structure comprises: a front bearing (15) inserted and installed on the outer circumferential surface of the rotation shaft (7); a rear bearing (16) inserted and installed on the outer circumferential surface of the rotation shaft (7); a rear bearing case (31) installed by an installation member (30) on the outside of the rear bearing (16); a fixed gap (t) installed between the rotation shaft (7) and the inner circumferential surface of the front side of a bearing installation groove (32); and a rear bearing cover (33) protruded with an outer wheel support unit (33) for supporting the rear surface of the outer wheel of the rear bearing (16) installed by a coupling bolt (35).