baber/WOPTO huggingface dataset:
Patent KR-20100095219-A (KR)
Title: 화물적재용 팔레트
Inventor: KIM SOEUNG KEE
IPC: B65D19/38
Filed: 2009-02-20
Abstract: 본 발명은 팔레트에 있어서, 복수의 판재가 서로 평행하게 배열되는 상부판넬; 및 상기 상부판넬의 밑면에 설치되어 지면으로부터 상기 상부판넬을 이격시키기 위한 지지부;를 포함하며, 상기 지지부는, 상기 상부판넬과 직교한 밑면에 복수의 지지부재가 나란하게 설치되고, 상기 상부판넬과 맞닿는 상기 지지부재의 일면에 상기 상부판넬의 절단면과 상면 일부를 함께 감싸는 앵글형태의 상부커버가 더 마련된 것을 특징으로 하는 화물적재용 팔레트를 개시한다. 
     이러한 본 발명은 상부판넬의 양측 절단면을 감싸는 상부커버가 지지부에 일체로 형성되어, 각 절단면에 커버를 설치해야 하는 작업 공정이 제거됨에 따라, 작업시 투입되는 인원의 감소와 함께 제작시간을 단축함으로써, 제품의 생산력 증가는 물론 제품의 제작비용을 절감할 수 있는 효과가 있다. 
     또한, 본 발명은 상부판넬에 적재되는 화물에 의해 각 지지부재 사이가 휘어져 상부판넬의 양측 단부가 들뜨게 될 경우, 상부판넬의 양단을 감싸듯 고정하는 한 쌍의 상부커버에 의해 들림현상을 방지하여 상부판넬이 훼손되는 것을 최소화하여 상부판넬에 적재된 화물이 손상되는 것을 방지할 수 있는 효과가 있다.  
     그리고, 본 발명은 조립된 팔레트의 각 모서리에 보호캡이 각각 설치되어 날카로운 모서리에 의해 작업자가 다치거나 혹은 의복이 손상되는 안전사고를 방지할 수 있으며, 또한, 날카로운 모서리에 의해 다른 물체가 손상되는 것을 방지할 수 있는 효과가 있으며, 또한, 각 모서리에 설치되는 보호캡에 의해 상부판넬과 지지 부의 결속력을 향상시킬 수 있는 효과가 있다.  
       
     팔레트, 상/하부판넬, 지지부, 상/하부커버, 차입구, 상/하부 보호캡
Patent KR-20100099358-A (KR)
Title: 자동차 변속기의 오일쿨러
Inventor: KIM IN KAB
IPC: F16H57/04
Filed: 2009-03-03
Abstract: 본 발명에 자동차 변속기의 오일쿨러는 방열기 탱크내로의 높은 조립성 향상을 유지한 채 원가절감과 제품의 관리성, 그리고 높은 생산성을 얻을 수 있다. 
     본 발명의 자동차 변속기의 오일쿨러가 제공하는 높은 조립성과 관리성, 그리고 높은 생산성은 오일쿨러의 오일 유입.출구 결합구조를 혁신시킨 플랜지 방식의 피팅을 제공함으로써 달성되게 되는데, 이는 종래 오일쿨러의 선단에서 그 오일쿨러의 두께방향(적층방향)으로 돌출 설치되는 관형의 볼트와 너트로 이루는 결합구조를 개선하여 오일쿨러의 주벽을 중앙에 두고 내.외측으로 설치되는 플랜지형으로 이루는 한 쌍의 가동 및 고정결속자들로 이루고, 이들 결속자들 중에서 오일쿨러의 선단에 고정 설치되는 고정결속자에 그 오일쿨러의 단부를 벗어나 두께 내로 일정길이 연장 설치되어 가동결속자를 결합시키는 결속요소가 나사결합하는 암나산이 구비되는 수용부를 갖추어 오일쿨러의 두께가 증대되지 않는 결합구조를 갖게 되어 조립성 향상과 원가절감을 얻게 된다. 
     그리고 본 발명 오일쿨러는 기구적인 결합으로 피팅의 표준화를 통한 개발비 감소와 관리성 향상을 얻게 된다.
Patent KR-20100102807-A (KR)
Title: Semi active steering apparatus
Inventor: SONG JOON KYU
IPC: B62D7/20
Filed: 2009-03-12
Abstract: PURPOSE: A semi-active steering apparatus is provided to enhance the steering convenience of a driver and the running stability of a vehicle by the operation of a steering wheel according to a running speed and to reduce the cost. CONSTITUTION: A semi-active steering apparatus comprises a rack bar, a steering knuckle(330), a lower arm(320), a scrub radius regulator(360), an electronic control unit, and a motor. The rack bar changes the rotational movement of a steering wheel(202) into the linear movement. One side of the steering knuckle is connected to a tie rod(115) connected to the rack bar and the other side is connected to a shock absorber(310) and steers a wheel. One side of the lower arm is connected to the steering knuckle and the other side is fixed to the body of a vehicle. The scrub radius regulator comprises a supporting member and an eccentric rotator. The supporting member is fixed to the lower arm. The eccentric rotator is inserted into the supporting member, makes eccentricity with the steering knuckle and is connected to be rotatable. The electronic control unit(430) receives the value measured by a vehicle speed sensor or a gear position sensor and determines a scrub radius regulating value. The motor receives the scrub radius regulating value from the electronic control unit and rotates the eccentric rotator.
Patent KR-20100104848-A (KR)
Title: A truncheon for demonstration repression
Inventor: JIN YOUN CHANG
IPC: F41B15/04
Filed: 2009-03-19
Abstract: PURPOSE: A demonstration repression rod is provided to prevent demonstrators from robbing the repression rod because electric current flows on the exterior of the rod. CONSTITUTION: A demonstration repression rod comprises a handle part(10), a beating part(20), a power supply control part, a + electric wire(34), a - electric wire(35), an electric stimulating part(40), and an electric coil part(50). A wiring groove(21) is formed lengthwise on both ends of the beating part. A heat insulator(22) is attached to the exterior of the beating part. The power supply control part controls the supply and on/off of the power. The + electric wire and the - electric wire are wired through the wiring groove of the beating part. The electric stimulating part applies an electric shock with the power provided from the power supply control part. The electric coil part is wound in a dual spiral form around the exterior of the leading end of the beating part so as to apply an electric shock to demonstrators grasping the beating part.
Patent KR-20100107291-A (KR)
Title: Nonvolatile memory devie and generating program voltage thereof
Inventor: YUN SUNG WON
IPC: G11C16/12
Filed: 2009-03-25
Abstract: PURPOSE: A nonvolatile memory device and a program voltage generation method thereof are provided to save program time by reducing program disturbance by skipping the program voltage process of a particular state. CONSTITUTION: A memory cell array(110) comprises a plurality of memory cells. A VCC generator generates a voltage for programming the plurality of memory cells. A control logic controls the VCC generator in order to provide one or more of program voltages to the plurality of memory cells. The control logic controls the VCC generator in order to provide one or more program voltage to the plurality of memory cells.
Patent KR-20100107798-A (KR)
Inventor: SHIN HYUN SEUNG
IPC: E06B3/92
Filed: 2009-03-26
Abstract: 본 발명은 오버헤드 폴딩 도어에 관한 것으로, 더욱 상세하게는 고유한 성능을 발휘하도록 규격화된 도어패널의 기능이 최대한 발휘될 수 있도록 도어패널을 가공하지 않고서도 다양한 높이로 건축된 건축물의 도어로 사용할 수 있는 규격화된 도어패널을 사용한 오버헤드 폴딩 도어시스템에 관한 것이다. 
     본 발명은 쌍을 이루어 수평으로 적층되거나 펼쳐질 수 있도록 연결된 다수개의 겹침도어패널쌍과, 상기 겹침도어패널쌍이 상하로 이동되기 위한 이동트랙과, 상기 겹침도어패널쌍이 수평상태로 이동시키기 위한 가이드트랙을 포함하는 오버헤드 폴딩 도어에 있어서, 상기 겹침도어패널쌍(150 ~ 152)은, 각각 방음 내지 보온 등의 고유한 기능을 발휘하도록 규격화되어 제작된 도어패널로 상부겹침패널(81, 83, 85)과 하부겹침패널(80, 82, 84)이 각각 중간힌지(130)로 연결되어 각각 쌍을 이루고, 각각의 쌍은 중간 롤러힌지(124)로 연결되어 구성되고, 상기 겹침도어패널쌍(150 ~ 152)의 최상단에 위치한 상부겹침패널(85)과 중간 롤러힌지(124)로 연결되는 높이조절패널(86)과, 상기 높이조절패널(86)이 이동되는 높이조절패널 이동트랙(31)을 더 포함하여 구성되는 것을 특징으로 한다. 
       
     오버헤드, 폴딩도어, 겹침도어패널쌍, 가이드트랙, 이동트랙, 도어패널
Patent KR-20100108898-A (KR)
Title: Sensor networks middleware system for integrating heterogeneous sensor network data
Inventor: JEONG HEE JIN
IPC: H04W84/18
Filed: 2009-03-31
Abstract: PURPOSE: A sensor network middleware system for integrating data of heterogeneous sensor networks is provided to supply an integrated data service to a server by communication with a heterogeneous sensor network. CONSTITUTION: At least one sensing server collects sensor data from at least one sensor network made of at least one sensor. A main server(110) receives sensor data collected from the sensing server to integrally manage data. The sensing server transmits collected sensor data into XML data and transmits it to a main server. The main server integrates the XML data in response to a request of at least one user application.
Patent KR-20100116834-A (KR)
Title: Upright type vacuum cleaner
Inventor: YOO DONG HUN
IPC: A47L9/26
Filed: 2009-04-23
Abstract: PURPOSE: An upright type vacuum cleaner whose centroid is stably located to prevent the vacuum cleaner from falling down is provided to improve the stability of an upright type vacuum cleaner by arranging a code reel unit to lower the centroid. CONSTITUTION: An upright type vacuum cleaner comprises a code reel unit(160) located between a fan motor unit(140) and a prefilter unit(130) installed at the lower part of a detachable dust collector. The upright type vacuum cleaner comprises a prefilter unit protrusion and the detachable dust collector. A combining hole, in which the prefilter unit protrusion is inserted, is formed on the lower part of the dust collector. The prefilter unit protrusion is projected to the top of the dust collector seating surface in which the dust collector is settled.
Patent KR-20100117752-A (KR)
Title: Method and system for performing handover to achieve load-balancing in wireless communication system
Inventor: HAN JUNG HEE
IPC: H04W16/08
Filed: 2009-04-27
Abstract: PURPOSE: A method and a system for performing handover to achieve load balancing in a wireless communication system are provided to effectively perform the load balancing between the base stations. CONSTITUTION: ENB(Evolved Node B)(120,122,124,126,128) selects a target cell depending on the kind of overload. The ENB filters terminals which have reverse handover possibility located in the handover possible area. The ENB decides the handover priority of the terminals which are not filtered among terminals located in the handover possible area. The ENB performs handover the terminals which are not filtered as described above to the selected target cell according to the priority.
Patent KR-20100117979-A (KR)
Title: Composition containing extract of black onion for prevention and treatment of gout or hyperuricemia
Inventor: CHUN HYO KON
IPC: A61P19/06
Filed: 2009-04-27
Abstract: PURPOSE: A composition containing black Allium cepa L. extract for preventing and treating gout and hyperuricemia. CONSTITUTION: A composition for preventing and treating gout or hyperuricemia contains black Allium cepa L. extract as an active ingredient. The extract is isolated using water, alcohol, or mixture thereof. The alcohol is a low alcohol of C1-C4, ethanol or methanol. A functional food for preventing and treating gout or hyperuricemia contains black Allium cepa L. extract as an active ingredient.
Patent KR-20100120427-A (KR)
Title: The navigation of motorbike and bicycle with vibrator and direction indicatior
Inventor: LEE SUK JAE
IPC: G08G1/0968
Filed: 2009-05-06
Abstract: PURPOSE: A navigation system for a bicycle and a motorbike with a vibrator and a direction indicator is provided to easily guide a user by connecting a main body to a motorbike handle or a bicycle handle. CONSTITUTION: A navigation system(1) for a bicycle and a motorbike with a vibrator and a direction indicator comprises a user input part, a signal input part, a calculation processing part, a single processing part, a power supply part, a data managing part, and an output part. The output part has a direction indicator(3). The navigation system is installed in the handle of a bicycle or a motorbike. A direction change is displayed on a direction conversion lamp, a vibrator, or a display screen.
Patent KR-20100123539-A (KR)
Title: Mobile terminal and control method thereof
Inventor: LEE MOON JU
IPC: H04M1/17
Filed: 2009-05-15
Abstract: PURPOSE: A mobile terminal and a control method thereof are provided to detect bacteria or sterilize to prevent an infectious disease. CONSTITUTION: A bacteria detection unit is automatically operated according to the predetermined condition(S402). The bacteria detection unit detects the bacteria(S403). If the detection of bacteria is completed, the result is outputted(S405). A sterilizer is automatically operated when the detected bacteria exceeds a standard value(S407).
Patent KR-20100126991-A (KR)
Title: A flexible pcb embedding active elements and passive elements and a manufacturing method ofthere
Inventor: PARK SE HOON
IPC: H05K1/18
Filed: 2009-05-25
Abstract: PURPOSE: A flexible PCB embedding active elements and passive elements and a manufacturing method thereof are provided to perform a flexible packaging process in even state by using a metal support layer. CONSTITUTION: A first circuit pattern(115) is formed on a support layer. The support layer is arranged of one of aluminum, gold, and silver. An active circuit element(120) and/or a passive device, and a semiconductor chip(130) are mounted in the first circuit pattern. The flexible layer is formed on the support layer in order to surround the first circuit pattern, the active circuit element and/or the passive device, and semiconductor chip. A second circuit pattern(150) is formed on the flexible layer. A heat plate(111) is formed by selectively eliminating a part of the support layer.
Patent KR-20100127350-A (KR)
Title: Lifesaving utensil and flying plaything
Inventor: KANG IN SUG
IPC: B63C9/08
Filed: 2009-05-26
Abstract: PURPOSE: A lifesaving utensil and flying plaything are provided to enjoy an aviation playing in general by an aviation ring with a body including the air inside of and save the people in danger in occasion. CONSTITUTION: A lifesaving utensil and flying plaything include a body(20) and an aviation ring(40). The body is formed to be swollen as a ball shape or round and flat ball shape as inflating the air. The outside center circumference of the body is formed as circular or ellipse. The aviation ring is formed and installed along the outside center circumference of the body. The aviation ring is formed and installed as round and flat ring shape.
Patent KR-20100128119-A (KR)
Title: Multi-optical tunable band rejection filter based on encoded porous silicon and chemical sensor using them
Inventor: SOHN HONG LAE
IPC: G02B6/12
Filed: 2009-05-27
Abstract: PURPOSE: A multi channel optical variable filter and a chemical sensor using the same are provided to detect various analyzing materials in short time. CONSTITUTION: A porous silicon film layer separates the porous silicon manufactured by electrochemical etching from a semiconductor silicon wafer. A polymer layer coats the surface of porous silicon film with polymer. The porous silicon comprises the rugate structure which electrochemically etching using the sinusoidal mixed current.
Patent KR-20100130801-A (KR)
Title: Spacer patterning technology using positive-negative photoresist
Inventor: LIM HEE YOUL
IPC: H01L21/308
Filed: 2009-06-04
Abstract: PURPOSE: A spacer patterning process using a positive-negative photoresist is provided to implement a pattern below 40 nm in one etching process by using a hard mask and a single process. CONSTITUTION: An oxide film(202) is formed on the upper side of a substrate(200). A poly silicon layer(207) is formed on the oxide layer. A first photoresist pattern is formed on the upper side of the poly silicon layer. A second photoresist pattern(220a) is formed on the sidewall of the first photoresist pattern. A second photoresist spacer is formed by removing the first photoresist pattern through an exposing process.
Patent KR-20100131190-A (KR)
Title: Connectable solenoid valve assembly
Inventor: LEE JO HYOUNG
IPC: F15B11/00
Filed: 2009-06-05
Abstract: PURPOSE: Connectable solenoid valve assembly is provided to enhance compatibility and to simplify the structure of a wire by the size unification of a pneumatic solenoid valve. CONSTITUTION: Connectable solenoid valve assembly comprises valve blocks(1). A pneumatic flow space is formed on the sidewall of the body(33) of the valve block. Coupling holes(36) are formed on the upper and lower parts of the body. Connecting holes(35) are formed on the upper and lower parts of the sidewall of the body. A connecting pin is inserted into the connecting hole and a coupling unit is coupled to the upper and lower parts of the body through the coupling hole to connect the valve blocks. The coupling unit includes a stripper bolt(21), which is assembled with a wrench.
Patent KR-20100134191-A (KR)
Title: Equipment of a promotional material using a bicycle or motorcycle
Inventor: JUNG DA HYE
IPC: B62J11/00
Filed: 2009-06-15
Abstract: PURPOSE: The advertisement apparatus using bicycle posts a notice the public information in the publicity booklet notice board. The PR effect is maximized. CONSTITUTION: The adhesion bend(111) is combined in the saddle pillar(A) of bicycle. The publicity booklet notice board comprises the extension part. The extension part is the anchored in one side of the adhesion bend. It is rearwards expanded of the saddle pillar as the regular length. The hanger(121) of the horizontal state is rearwards expanded.
Patent KR-20100134313-A (KR)
Title: Resin composition for printed circuit board and printed circuit board using the same
Inventor: LEE HWA YOUNG
IPC: C08L63/04
Filed: 2009-06-15
Abstract: PURPOSE: A resin composition for a printed circuit board is provided to prevent delamination or crack in a high temperature thermal shock test due to excellent reliability. CONSTITUTION: A resin composition for a printed circuit board comprises a composite epoxy resin, a bisphenol A type hardener, a curing accelerator and an inorganic filler. The composite epoxy resin comprises 1~8 weight% triglycidyl isocianurate resin, 1~20 weight% diglycidyl ether of bisphenol A type epoxy resin, 30~70 weight% cresol novolak epoxy resin, 20~30 weight% phosphorous-based epoxy resin and 1~20 weight% rubber-modified epoxy resin.
Patent KR-20100006115-A (KR)
Title: Gas distributing plate and apparatus for treating substrate including the same
Inventor: CHOI JAE WOOK
IPC: H01L21/205
Filed: 2009-06-16
Abstract: PURPOSE: A gas distributing plate and a substrate processing apparatus with the same are provided to supply uniform progress gas to a substrate and increase plasma density by compensating for thermal expansion in a thin film etching process or a thin film deposition process. CONSTITUTION: A gas distributing plate comprises a board and a jet hole. The board is composed of a first surface supplied with process gas and a second surface with a concave portion which faces to a substrate mounting part. The jet hole comprises an inflow part(214), an orifice part, and a diffusion part(216). The inflow part is extended from the first surface to the second surface. The orifice part is positioned on the lower part of the inflow part. The diffusion part is positioned on the lower part of the orifice part and is extended to the second surface. A plurality of inflow parts have a fluid flow path which gets shorter from a peripheral part of the board toward a central part. A plurality of diffusion parts have the same fluid flow path.
Patent KR-20100002127-A (KR)
Title: Fuel injection device for diesel engine and manufacturing method thereof and valve device
Inventor: KUWAHARA TAKAAKI
IPC: F02M61/18
Filed: 2009-06-19
Abstract: PURPOSE: A fuel injection system for a diesel engine and a manufacturing method thereof, and a valve device are provided to improve durability by making a nozzle body and a needle valve with nitride alloy steel. CONSTITUTION: A fuel injection system for a diesel engine comprises a nozzle body(1), a needle valve(2) and a seat portion(11). The seat portion of the needle valve and nozzle body is made of nitride alloy steel. A first layer of a diffusion layer and a compound layer are removed from the seat portion surface of the nozzle body. A second layer of the diffusion layer can be another seat portion surface of the nozzle body. A second layer of the diffusion layer has roughness under Ra 0.4.
Patent KR-20100136759-A (KR)
Title: Touch panel and electronic device including the touch panel
Inventor: LIM SEONG TAEK
IPC: G06F3/044
Filed: 2009-06-19
Abstract: PURPOSE: A touch panel and an electronic device equipping the same in order to divide an input button area and a peripheral area according to the touch of a user are provided to recognize the input button through the touch of the user. CONSTITUTION: A plurality of driving electrodes(140) is formed in a first substrate and a second substrate. The electro-rheological fluid is filled with a gap between the second substrate and the first substrate. If the driving voltage is applied to a plurality of driving electrodes, the input button area having the predetermined pattern is limited with the viscous change of the electro rheological fluid.
Patent KR-20100137751-A (KR)
Title: Apparatus and method of clarifying and reclamating organic waste with prolonged stay procedure
Inventor: PARK KIE MOO
IPC: C05F9/02
Filed: 2009-06-23
Abstract: PURPOSE: A multistage prolonged stay-type prolonged stay-type elimination apparatus and a method thereof are provided to automatically perform a decomposition process. CONSTITUTION: A multistage prolonged stay-type prolonged stay-type elimination apparatus comprises the following: an agitation tank(100) with an inlet(110); a reaction tank(200) including a valve(220) for discharging gas collected on the upper side, absorbing organic waste from the agitation tank; a liquid-fertilizer generating tank(300) including an inspection window(31) and a sediment drop outlet(320); and a sediment storing tank(400).
Patent KR-20100138476-A (KR)
Title: A cap having emergency call signal transmitting apparatus
Inventor: JI HEE KWAN
IPC: A42B1/24
Filed: 2009-06-25
Abstract: PURPOSE: A cap having an emergency call signal transmitting apparatus is provided to generate the position signal of a user or an emergency signal by installing a signal transmitting unit in the cap. CONSTITUTION: A cap having an emergency call signal transmitting apparatus is comprised of a GPS receiver(210), a transmitter(220), a battery(240), an on / off switch. The GPS receiver receives the position signal of a user. The transmitter transmits the location information and ID which are received from the receiver. The battery supplies power to the GPS receiver and transmitter. The on/off switch is selected by the user to operate the GPS receiver and transmitter.
Patent KR-20110006255-A (KR)
Title: Fishing lamp device built into the boat sides of fishing boat
Inventor: BAE BONG SEONG
IPC: A01K85/01
Filed: 2009-07-14
Abstract: PURPOSE: A fishing lamp apparatus mounted on the edge of a ship is provided, which can improve illuminant and photonic efficiency. CONSTITUTION: A fishing lamp apparatus mounted on the edge of a ship comprises: a top cover in which an optical transmission part is formed in at least a part; a CCFL module irradiating light outside through an optical transmission part; a reflector which reflects the light irradiated from a cold cathode fluorescent lamp and supplies the light to the optical transmission part; a lighting member(100) including a bottom cover combined with the top cover; a combining member(200) which fixes the lighting member to the edge of a ship; and a power supply member(300).
Patent KR-20110009504-A (KR)
Title: Stereoscopic image display and driving method thereof
Inventor: KIM SEONG GYUN
IPC: H04N13/04
Filed: 2009-07-22
Abstract: PURPOSE: A dimensional image display device and a driving method of the same are provided to control back light unit to be turned on/off when embodying a 3D image by time dividing an liquid crystal shutter glass, thereby resolving a crosstalk problem of a right-eye image and a left-eye image. CONSTITUTION: A display device displays left-eye image data and right-eye image by time dividing. A shutter glass(18) is synchronized to a display element and turns on/off a left-eye shutter and a right-eye shutter in turns. A back light unit(16) irradiates the light o the display element. The back light unit periodically repeats turning the light on/off. A control unit(11) supplies left-eye image data and right-eye image data to a data driving circuit of display element.
Patent KR-20110009826-A (KR)
Title: Integrated incase for kimchi refrigerator
Inventor: LEE YOUNG GIL
IPC: F25D23/00
Filed: 2009-07-23
Abstract: PURPOSE: An integrated inner casing of a kimchi refrigerator is provided to simplify the manufacturing process of a direct-cooling type inner casing of the kimchi refrigerator. CONSTITUTION: An integrated inner casing of a kimchi refrigerator comprises the following: an indirect cooling-type inner casing(10) forming an indirect cooling-type storage space; and a direct cooling-type inner casing(20) forming a direct cooling-type storage space. The inner casings are formed in one body by a vacuum formation method.
Patent KR-20110010254-A (KR)
Title: Apparatus for coupling cover to room controller in wall mounting type boiler
Inventor: JOO DONG HO
IPC: F24H9/00
Filed: 2009-07-24
Abstract: PURPOSE: A cover combining apparatus of a room controller for a wall-type boiler is provided to prevent damage to a nail hanger groove or an elastic hook. CONSTITUTION: A cover combining apparatus of a room controller for a wall-type boiler comprises an elastic piece(24), a steel plate placing groove(25), and multiple locking projections(26). The elastic piece is integrated between both sides of the rear panel(2) of the room controller on both sides of the elastic hook(23). The steel plate placing groove is horizontally formed on the upper and lower parts of the rear panel. The multiple locking projections are formed on the upper and lower peripheral parts of the steel plate placing groove.