baber/WOPTO huggingface dataset:
Patent KR-20020047985-A (KR)
Inventor: SEO JIN BEOM
IPC: F16H3/08
Filed: 2000-12-15
Abstract: PURPOSE: A speed drive gear for a manual transmission is provided to reduce parts and simplify assembling process by integrally forming a gear part and a flange part of the speed drive gear, and to prevent noise and breakage by restricting clearance after assembling. CONSTITUTION: A speed drive gear of a manual transmission is composed of a gear part(10) combined with a main shaft(6) to receive rotational force of the main shaft, and engaged with the speed gear; and a flange part(12) integrally extended in the end of the gear part, and connected to a propeller shaft. A fixing nut(18) is inserted to the side of the flange part, and combined with the main shaft. The gear part is spline-combined with the main shaft, and the fixing nut is assembled with the flange part. The speed drive gear is fixed in the main shaft, and the flange part is assembled with the propeller shaft by the bolt. Driving force is transmitted through the main shaft to the propeller shaft in driving the engine. Parts and expenses are reduced with integrally forming the gear part and the flange part of the speed drive gear. Noise and breakage are prevented with assembling without clearance.
Patent KR-20010087148-A (KR)
Inventor: INOUE YOSHINORI
IPC: F04B27/10
Filed: 2000-12-19
Abstract: PURPOSE: To provide a compressor capable of increasing degree of design freedom by improving layout of a spring chamber storing a coil spring energizing a main shaft. CONSTITUTION: This compressor is provided with a main shaft 16, a front housing 11 having a shaft hole rotatably supporting a front side of the main shaft, a cylinder block 12 disposed behind the front housing provided with a shaft hole rotatably support the rear side of the main shaft and a cylinder on an outer periphery of the shaft hole, a rear housing 13 disposed behind the cylinder block and provided with a suction chamber and a discharge chamber communicating with the inside of the cylinder, and the coil spring 32 energizing the main shaft forward from the rear. The rear housing has a recessed part 13c or a seat part partitioning at least a part of the spring chamber storing the coil spring.
Patent KR-20010025360-A (KR)
Title: Liquid manure injecting system
Inventor: OH IN HWAN
IPC: A01C23/02
Filed: 2000-12-19
Abstract: PURPOSE: A system for injecting liquid fertilizer is provided, which minimizes loss of the fertilizer and can prevent generation of bad smell by injecting livestock excretions in a slurry state to soil. CONSTITUTION: The system for injecting liquid fertilizer comprises: an upper link(31) and a lower link(33) which control the vertical movement of the system; a hose(35) carrying the fertilizer from a tank(20) to a central distributing device(30) for spraying the fertilizer evenly; a valve(37) for controlling the discharged amount at a side of the central distributing device(30); a plurality of injecting hoses(39) connected to the central distributing device(30); a device for fixing the hoses(39); a colter(43) cutting the soil; a plowing device(45) digging up the cut soil; a soil covering device(46) filling up the gap of the soil; and a safety device(47) for the plowing device(45).
Patent KR-20010082595-A (KR)
Title: Positive photoresist composition
Inventor: SATO KENICHIRO
IPC: C08K5/00
Filed: 2000-12-21
Abstract: PURPOSE: Provided are a positive photoresist composition which is less liable to a sensitivity change with the lapse of time in the production of a semiconductor device and has a improved density dependency, a positive photoresist composition which has a satisfactory sensitivity and resolving power in the formation of a contact hole pattern and which is less liable to generate particles in a resist solution, and a positive type photoresist composition ensuring improved edge roughness of a resist pattern and excellent in shelf stability. CONSTITUTION: The positive type photoresist compositions comprise (A) a compound which generates an acid by radiation of active ray or radiation, (B) a resin, a structure of which is partially represented by general formula(1), (C) organic basic compound, and (D) at least one selected from fluorine-based and/or silicon-based surfactants and nonionic surfactant. In the formula(1), m denotes an integer of 1-6, each of R and R2 is alkyl group or cyclic alkyl group, R1 and R2 together may form cyclic alkyl group. Each of R3 and R4 is hydrogen atom, alkyl group or cyclic alkyl group, or R3 and R4 together may form cyclic alkyl group. Each of R5-R7 is alkyl group, cyclic alkyl group, aryl group, trialkylsilyl group or trialkylsilyloxy group.
Patent KR-20020051697-A (KR)
Title: Forward transmission channel selecting apparatus and method
Inventor: KIM JEONG HWAN
IPC: H04B7/26
Filed: 2000-12-23
Abstract: PURPOSE: An apparatus and a method for selecting forward transmit channels are provided to transmit a large amount of data more rapidly by granting priority for a channel transmitting a large amount of data. CONSTITUTION: An apparatus for selecting forward transmit channels is composed of a buffer management part(110), a DRC extraction part(120), and a channel selection part(130). If forward data for each channel are transmitted from a BSC(Base Station Controller), the buffer management part(110) measures the buffering amount of each channel's forward data. The DRC extraction part(120) extracts each forward channel's DRC value transmitted from a reverse channel. The channel selection part(130) divides each buffering amount by each extracted DRC value, obtains a time division size necessary for the transmission of each channel data, selects a channel having the largest size as a data transmit channel, and limits data transmission frequency to N times. If the data transmission of the selected channel is executed N times, the channel selection part(130) selects the next channel so that data can be transmitted sequentially for all the other channels.
Patent KR-20020051734-A (KR)
Title: The direct operational type open/close device for a sliding door of bus
Inventor: KIM JONG IN
IPC: E05F15/56
Filed: 2000-12-23
Abstract: PURPOSE: Provided is an opening/closing apparatus of sliding door useable in a direct active mode bus to open/close the door without alteration of operational directions created by flow pressure to accomplish reduced weight of the door and production cost of the same. CONSTITUTION: The apparatus comprises an operational component(10) to produce pulling/pushing force for a door by reciprocal movement through inflow/outflow of oil; and a linkage component(20) to move the door by angular movement through a fixture portion of hinge in a flow-frame(F) when operating with the operational component(10). The operational component(10) has a hollowed cylinder(11) to flow compressed oil into or from by solenoid valve; a movement rod(12) provided with a linkage component(20) exposed outside the cylinder(11); and a piston(13) at one end of the cylinder(11). Around the cylinder(11), a flexible bellows tube(T) is mounted to prevent impurities from inflowing.
Patent KR-20020052350-A (KR)
Title: The structure and producing methode of delta cover and glass run
Inventor: CHO UI CHAN
IPC: B60J5/04
Filed: 2000-12-26
Abstract: PURPOSE: Structure of a delta cover and a glass run and a manufacturing method thereof are provided to improve appearance, and to reduce noise by restricting the step between the delta cover and the glass run and by excluding difference of color. CONSTITUTION: A delta channel(112) and a run channel(114) are formed by a press, and combined with welding. A delta cover(1-1) and a glass run(1-2) are integrally formed in the outside of the combination structure of the delta channel and the run channel. The delta channel is assembled with the run channel, and the glass run is formed with extrusion-molding. The combination structure of the delta channel and the run channel and the extrusion-molded glass run are placed in an injection mold. EPDM(Ethylene Propylene Diene terpolymers) rubber is injection-molded in the exposed part of the delta cover and the run channel. Appearance is improved with excluding difference of color, and noise is reduced with restricting the step between the delta cover and the glass run.
Patent KR-20010025429-A (KR)
Title: Method for inputting english using the compact key-pad
Inventor: KIM SANG GEUN
IPC: G06F3/02
Filed: 2000-12-27
Abstract: PURPOSE: An alphabet inputting method is provided to arrange 2 or 3 alphabets on keys of a keypad by considering a usage frequency, and enable a user to input arranged alphabets by simultaneously pushing the corresponding key and a function key so that it can enhance an input speed. CONSTITUTION: The method comprises steps of inputting some alphabets by pushing only a corresponding character input key, and inputting other alphabets by pushing both a corresponding character key and one function key. In the small sized keyboard, 8 keys are arranged with 3 alphabets, 1 key arranged with 2 alphabets, and 2 keys arranged with specific functions. The function keys can be pushed simultaneously with the corresponding character input key or sequentially after the corresponding key gets pushed.
Patent KR-20010062771-A (KR)
Inventor: ABE HIDEO
IPC: G02F1/1335
Filed: 2000-12-27
Abstract: PURPOSE: To develop a liquid crystal display device for reflection as well as transmission which is easily made thin and light-weight and is superior in display quality. CONSTITUTION: In this liquid crystal display device for reflection as well as transmission, a luminaire 91 switched to lighting and extinction is provided on one or more side faces of a transmission liquid crystal panel having at least liquid crystal cells, and an optical path conversion sheet 11 is provided which is adhered to the visible rear side of the liquid crystal display panel with an adhesive layer 12, of which the refractive index difference from the nearest liquid crystal cell substrate 31 is > 0.2, between them and of which the refractive index difference from the nearest liquid crystal cell substrate is > 0.15, and a reflection layer 81 is provided on the rear side of the optical path conversion sheet, and the optical path conversion sheet has an optical path conversion slope A1, which is inclined at 30 to 48deg. to the sheet surface and faces a luminaire and reflects incident light from the luminaire to the visible side of the liquid crystal display panel, and a flat face A3 which is inclined at > 10deg. to the sheet surface and of which the projection area to the sheet surface is >= 10 times as large as that of the optical path conversion slope.
Patent KR-20020054889-A (KR)
Title: Apparatus for controlling pin of a holder
Inventor: LEE JEONG GYU
IPC: H01L21/68
Filed: 2000-12-28
Abstract: PURPOSE: An apparatus for controlling a holder pin is provided to perform an unloading process while a wafer is not separated from a fixed position, by removing a pin for fixing the wafer when a holder reaches a precise unloading position. CONSTITUTION: A plurality of fixing holes(26) are formed in a main body plate(20). A stick-type bar(22) fastens or removes the pin of the holder for fixing the wafer. One end of the bar is curved by a predetermined slope, and the other end has a convex protrusion. A connection unit(24) connects the main body plate with the bar. The bar has such a predetermined length to remove the holder pin when the holder comes to the unloading position.
Patent KR-20010031021-A (KR)
Title: 촉매 평가용 촉매 라이브러리의 방사선 활성화와 스크리닝및 그 반응장치
IPC: C40B30/08
Filed: 1998-10-08
Abstract: 주소지정가능한 테스트 사이트를가지는 촉매 라이브러리의 활동성과 선택성을 위한 신속한 스크리닝은 주소지정가능한 테스트 사이트에서 생성물 플룸을 형성하는 반응물 스트림과 테스트 사이트에서의 포텐셜 촉매를 접촉시킴으로써 성취된다.    생성물 플룸은 개별적으로 주소지정가능한 테스트 사이트에 근접하여 본래 미소전극 수집에 의해 검출되는 특정 광이온과 광전자의 형성을 증진시키도록 하는 에너지 레벨의 방사선 빔을 통과시킴으로써 성취된다.    생성물 플룸은 열 대 열 단위로 스크리닝될 수 있거나, 전체 촉매 라이브러리로부터 촉진되는 모든 생성물 플룸이 동시에 스크리닝될 수 있다.    방사선 스크리닝을 위한 적절한 반응장치와 미소반응장치가 개시된다.
Patent KR-20010031084-A (KR)
Title: 액정표시장치
IPC: G02F1/1335
Filed: 1999-09-10
Abstract: 본 발명은 액정표시장치에 관한 것으로서, 액정표시장치(10)는 광원장치(12)에서의 무편광광을 직선편광분리층(14)을 통해 액정셀(16)에 입사시키고, 액정셀(16)은 전계의 인가에 따라 방향자의 방향을 변화시키고, 입사직선편광광의 전장진동 벡터의 방향을 실질적으로 0∼90도까지 변화시키고, 표면의 2색성 직선편광층(18)에 입사하여 그 편광투과축과 일치하는 성분만 외측으로 출사할 수 있도록 하고, 2색성 직선편광층(18)은 이것에 입사하는 외광 중 50%를 투과하고 나머지를 흡수하는 것을 특징으로 한다.
Patent KR-20010031585-A (KR)
Title: 액체내 용해되는 기체량을 증가시키고 사용시까지 이증가된 양을 유지하기 위한 방법 및 시스템
IPC: C02F1/78
Filed: 1998-10-27
Abstract: 초순수 탈이온수와 같은 액체내에 용해되는 오존과 같은 기체량을 증가시키기 위한 방법 및 시스템이 제공된다. 용존 기체(10)는 가압하에서 액체(31)에 투입되고 생성된 혼합물은 가압(40)하에서 원하는 사용 단계로 운반된다. 원하는 사용 단계에서, 액체 및 용존 기체를 포함하는 혼합물은 조절되어 분배된다. 따라서 본 발명의 방법 및 시스템은 오존수와 같은 것을 제공할 수 있고, 계속하여 효율적으로 냉각 단계 없이도 높은 농도의 오존수를 제조하는 단순하고 경제적으로 효율적인 방법을 제공한다.
Patent KR-20010024574-A (KR)
Title: 주화수납기
IPC: G07D5/00
Filed: 1998-10-29
Abstract: 주화수납기는, 다른 금속적인 영역들(21,22)을 갖는 두 가지 금속으로 된 주화, 예를 들면 새로운 영국 ￡2.00 주화(8)와 같이 각각 독특한 유도특성들을 나타내는 영역들을 구비한 주어진 화폐단위금액의 주화를 검출하도록 구성된다. 이 수납기는  주화(8)가 통과하여 지나는 코일면(30)을 갖는 감지코일유닛(C3a,b)을 구비한 주화검출부(4)를 구비하여 실질적으로 주화의 바깥영역(22)과 선택적으로 유도결합을 형성시킨다. 코일면(30)의 면적은 72 mm 2 미만이다.
Patent KR-20010033497-A (KR)
IPC: A61K/
Filed: 1998-12-16
Abstract: A new crystalline form of 1-methyl-5-p-toluoylpyrrole-2-acetamidoacetic acid guaiacyl ester, a process for its preparation and pharmaceutical compositions endowed of anti-inflammatory, analgesic and antipyretic activity containing same are disclosed.
Patent KR-20010040381-A (KR)
Title: 고 명도의 소립자 적색 방사 인광체의 제조 방법
IPC: C09K11/77
Filed: 1999-01-22
Abstract: 본 발명은 이트륨 공급원, 가돌리늄 공급원, 유로퓸 공급원, 및 붕소 공급원을 제공하는 유기 전구체를 포함하는 희석액으로부터 형성된 겔을 고상 반응 온도 미만의 온도에서 열 분해시켜 인광체를 얻는 단계를 포함하는, 하기 화학식 1의 유로퓸 활성화된 이트륨, 가돌리늄 붕산염 인광체의 형성 방법에 관한 것이다. 
     〈화학식 1〉 
     (Y 1-x-y-z Eu x Gd y M z )BO 3   
     상기 식에서, 
     0.01≤x≤0.1이고, 0≤y≤0.5이고, M은 Mg, Ca, Sr 또는 Ba이고, 0≤z≤0.1이다.
Patent KR-20010043305-A (KR)
Title: 열전사 프린트헤드의 제조
IPC: B41J2/16
Filed: 1999-05-07
Abstract: 열전사 히터 칩(1)은 TAB회로 테이프(5)의 개구부내에 위치하고 TAB 리드선(3)은 칩에 접합된다. 이 조립체는 리드선의 아래쪽이 위로 향하도록 돌려져 있고, 경화성의 전기적으로 절연체인 액체가 가해져서 경화되어 고형체(11)를 형성한다. 칩의 바닥은 그 후 열 전도성 접착제를 사용하여 열 방사 지지대(7)에 부착된다. 리드선에서 경화된 고형체는 리드선에 도달하는 여하한의 접착제가 전기적 분로(shunt)의 원인이 되는 것을 방지해 준다. 결과적인 프린트헤드는 지지대뿐만아니라 칩에서의 과잉 열을 발산시킨다.
Patent KR-20010052707-A (KR)
Title: 광기계 편향기용 장치
IPC: G02B27/02
Filed: 1999-05-26
Abstract: 라인 디스플레이 유닛(3)용 광기계 편향기는 접안 및 대물 기능부(1,6,6a)와 스위프 신호 발생용 구성요소(2) 또는 이미지 반전용 구성요소를 구비한다. 각각의 개별적인 스위프 신호 발생 구성요소(2)는 한쪽 또는 양쪽 눈(7)에서 상향 거리(B) 및/또는 측부로 거리를 두고 배치될 수 있다. 하나 이상의 거울면(5a)에 의해, 스위프 신호 발생 구성요소는 라인 디스플레이 유닛(3)으로부터 하나 이상의 제2 거울면(5a)으로 인입하는 복사선(4)을 반사하며, 거울면은 회전하게 고정된 방식으로 배치된 구성요소상에서 대물 기능부를 형성한다. 각각의 개별적인 제2 거울면은 거울면(6a) 또는 접안 기능부를 형성하는 거울면을 향해 복사선(4b)을 반사하여, 눈의 동공(7a)을 위한 각각의 제1 거울면을 재생한다. 다른 실시예에 있어서, 스위프 신호 발생 구성요소와 회전하게 고정된 구성요소는 위치가 교체된다.
Patent KR-20010053085-A (KR)
Title: 칼슘계 배설물 개질제를 포함하는 흡수 제품
IPC: A61F13/49
Filed: 1999-06-29
Abstract: 본 발명은 액체 투과성 상면시이트; 이러한 상면시이트의 적어도 일부에 연결된 액체 불투과성 배면시이트; 이들 상면시이트의 적어도 일부와 배면시이트 사이에 배치된 흡수 코어; 및 제품내에 침적된 배설물의 적어도 일부와 접촉될 수 있도록 유효량의 칼슘계 배설물 개질제를 포함하며, 제 1 허리 영역, 이러한 제 1 허리 영역에 대향된 제 2 허리 영역, 및 이들 제 1 허리 영역과 제 2 허리 영역 사이에 배치된 가랑이 영역을 갖는, 배설물을 수용하기 위한 흡수 제품에 관한 것이다.
Patent KR-20010025555-A (KR)
Title: The Method and devices of the Road Marking for the Pavement
Inventor: CHOI YEONG HO
IPC: E01C23/22
Filed: 2001-01-04
Abstract: PURPOSE: A traffic lane painting method and an apparatus are provided to prevent a traffic lane from evaporating unevenly according to landform and time, and to reduce the quantity of wastes by substituting a paint storage tank of a large capacity for a container of a small capacity. CONSTITUTION: A traffic lane is painted by spraying paints evenly in an intersectional method and spreading glass beads evenly in a natural drop method to settle on the applied traffic lane, wherein the latter traffic lane painting method of a paved road comprises the steps of applying paints to the opposite direction of moving vehicles, spreading crushed stones and glass beads, applying paints to the direction of moving vehicles, and spreading glass beads. A traffic lane painting apparatus of a paved road comprises a guide bar(1) used to measure the exact location of a traffic lane, a storage box of thick glass beads(2), a storage box of thin glass beads(3), a control box(4) controlling the pressure of an airless spray, a paint pressure chamber(5) pressurizing the paint flew out from a paint storage tank partially, an airless pump(6) for pressurizing, a heater(7) making painting work easily by preventing paints from freezing and increasing viscosity, a paint filter tank(8) for preventing a spray from being clogged, a paint storage tank(9), a compressor(10) supplying air to the entire system, an indicating light used for preventing the impact of vehicles during painting work, a 2-way spray(12), and a free-fall type glass beads spreader(13).
Patent KR-20020060018-A (KR)
Title: Brass alloy for cutting tool with high speed performance
Inventor: SON IN GUK
IPC: C22C9/04
Filed: 2001-01-09
Abstract: PURPOSE: Provided is a brass alloy for free cutting tool with improved machinability by reducing Pb content in the brass alloy while uniformly diffusing bismuth and selenium(Se) through the grain boundary of the brass alloy. Further, cerium(Ce) is added in the brass alloy so that grain size of the brass alloy is reduced and uniformly diffused in the alloy matrix. CONSTITUTION: The brass alloy of Cu-Zn for free cutting tool comprises Cu 56 to 62 wt.%, Pb 0.10 wt.% or less, Fe+Sn 1.0 wt.% or less, Bi 0.5 to 3.0 wt.%, Se 0.5 to 2.0 wt.%, Ce 0.25 wt.% or less, unavoidable impurities 0.5 wt.% or less and a balance of Zn.
Patent KR-20010044209-A (KR)
Inventor: LEE HYO KYONG
IPC: H04W4/00
Filed: 2001-01-12
Abstract: PURPOSE: An advertisement reproducible mobile phone and an advertising method using the same are provided for the advertiser to enable a target advertisement marketing according to user information and for a user to remove a boredom during a response standby time period and benefit a substantial communication charge reduction by receiving a compensation cost for viewing an advertisement. CONSTITUTION: A mobile phone has a function of storing and reproducing an advertisement data of MPEG4 or JPEG/GIF format(i.e., a mobile advertisement or a banner advertisement, etc.), so that it is connected to an advertisement provider server(200) to download advertisement data and store the in a memory at late at night or during a voice call response standby time period. When a user requests a voice call(he or she depresses a call button) or requests information of a radio Internet, the advertisement data stored in the memory is displayed on an LCD screen. And then the advertisement of the LCD screen disappears instantly when the called party answers the phone or when it is switched to a voice mail box in the case of the voice call, or when the request information is completely received in the case of a radio Internet call, so that the user can recognize the call connection (the voice or the Internet call).
Patent KR-20020062490-A (KR)
Title: Synthesis method of siloxane-functionalized high 1,4-cis polybutadiene
Inventor: KIM A JU
IPC: C08C19/25
Filed: 2001-01-22
Abstract: PURPOSE: Provided is high 1,4-cis polybutadiene of which the terminal is modified by a siloxane compound, which can be applied efficiently to a silica blend for a high-performance tire. CONSTITUTION: The high 1,4-cis polybutadiene of which the terminal is modified by the siloxane compound is produced by polymerizing 1,3-butadiene or derivatives thereof in a non-polar solvent in the presence of a catalyst comprising a rare earth compound, a halogen contained compound, and an organic aluminum compound to produce high 1,4-cis polybutadiene, followed by reacting the high 1,4-cis polybutadiene with the siloxane compound represented by the formula 1, wherein R1-R5 are identically or differently C1-C7 alkyl or aryl or halogen. The rare earth compound is selected from neodymium versatate, neodymium octoate, and neodymium naphthenate. The halogen contained compound is t-alkyl halide. And the organic aluminum compound is at least one selected from the group consisting of trimethyl aluminum, triethyl aluminum, tripropyl aluminum, tributyl aluminum, and etc.
Patent KR-20010078079-A (KR)
Inventor: CHENG ALAN T
IPC: A23L2/00
Filed: 2001-01-26
Abstract: PURPOSE: A process and apparatus for producing carbonated beverages are provided, which when they are packaged, exhibit reduced losses of carbonation, beverage, and containers. CONSTITUTION: The process for producing a carbonated beverage having a reduced tendency to undesired foaming, comprises: (a) providing water which contains dissolved therein air or oxygen, and maintaining a pressure greater than atmospheric on the water; (b) saturating the water with carbon dioxide while maintaining sufficient pressure thereon that no gas evolves therefrom, and feeding the resultant mixture to step (c) while maintaining sufficient pressure thereon that no gas evolves therefrom; and (c) removing dissolved air or oxygen from the mixture formed in step (b) while dissolving additional carbon dioxide into the mixture and maintaining over the mixture a gas space having a pressure greater than atmospheric.
Patent KR-20010082041-A (KR)
Title: Heat exchanger tube weaving apparatus and method
Inventor: RHODES RICHARD O
IPC: F28F1/00
Filed: 2001-02-02
Abstract: PURPOSE: To provide an organizing device used for improving thermal efficiency by separating tubes of a heat exchanger and inserting a spacer for spacingly supporting the tubes between the tubes. CONSTITUTION: The organizing device comprises a frame assembled body and an organizing mechanism included in the frame assembled body. The organizing mechanism comprises an aligning plate for aligning the tubes and a separating plate for separating the tubes after aligning them. The organizing device can thereby automate a process of separating the tubes of the heat exchanger, and the spacer can be immediately inserted between the tubes.
Patent KR-20020065232-A (KR)
Title: Adapter with rotary plug
Inventor: SEO JEONG IN
IPC: H01R35/04
Filed: 2001-02-06
Abstract: PURPOSE: An adaptor having a rotative plug is provided to rotate the plug on the left and the right, to exclude an interference with a neighboring plug, and to maintain an electrical connection in the rotative plug, thereby preventing connection inferiority. CONSTITUTION: A plug unit is composed of a front unit and a rotative unit for fixing a plug. The rotative unit is cylinder-typed to form a groove on an external circumference. A restricting projector(18) is inserted on an opposite point. The cylinder-typed rotative unit forms many slits cutting the external circumference. A plug housing is composed of one pair of cases(50a). On one case, a circular opening(52) is perforated to insert and rotate the plug unit. A groove(54a) is inserted on a peak of a vertical direction around the opening. Grooves(54a, 54b, 54c, 54d) are inserted at 45 degrees on the left and the right. Projectors(56a, 56b) are projected toward an inner side of a case as stoppers on the upper part of the grooves(54b, 54d).