baber/WOPTO huggingface dataset:
Patent KR-20220150160-A (KR)
Inventor: GANG SEUNG GU
IPC: G01W1/02
Filed: 2021-05-03
Abstract: The present invention relates to a road system including a heat exchanging apparatus and a construction method thereof. The road system including the heat exchanging apparatus according to one embodiment of the present invention comprises: a buried structure unit including the heat exchanging apparatus; and a road wherein a stepped unit corresponding to the buried structure unit is formed. An objective of the present invention is to provide the road system including the heat exchanging apparatus capable of forming the heat exchanging apparatus on the road through simple construction, and the construction method thereof.
Patent KR-20220153307-A (KR)
Inventor: CHO JEONG HOON
IPC: A01K61/17
Filed: 2021-05-11
Abstract: An apparatus for automatically collecting fish eggs and fries according to one aspect comprises: a collection unit which collects eggs or fries laid by fish disposed inside a fish tank; a moving pipe which is connected to the collection unit, and moves the collected eggs or fry together with water; a storage unit which stores the eggs or fries that have passed through the moving pipe together with water; a pump which sucks the water stored in the storage unit, and discharges the water to the outside of the storage unit; and a spawning and delivery induction unit which induces spawning or delivery of the fish by radiating light to an upper portion of the collection unit.
Patent KR-20220162484-A (KR)
Title: Artificial intelligence dialogue providing service method and apparatus for a sense of reality
Inventor: KWON EUN KYEONG
IPC: G06N3/00
Filed: 2021-06-01
Abstract: The present invention relates to a method and device technology for providing an artificial intelligence conversation for sense of reality. Provided is a method for providing artificial intelligence conversation service for a sense of reality of a virtual friend, which includes the steps of: dividing conversation into an initial stage, an intermediate stage, an active stage, and a relationship maintenance stage, and determining a conversation technique for each of the divided conversation stages; processing the conversation examples according to the conversation technique into contextual conversation contents according to situations; and providing a voice conversation with a sense of reality by uttering and processing the contextual conversation content according to a conversation technique determined according to the stage in a process of conversation with a user.
Patent KR-20220163717-A (KR)
Inventor: PARK JUNG IN
IPC: G08G1/01
Filed: 2021-06-03
Abstract: The present invention relates to an object-responsive vehicle flow control method in which a model of the deep learning algorithm for detecting an object from an input image is optimized to be suitable for a road environment, and at the same time, when the image is captured and acquired by a camera, the image is analyzed using deep-learning to analyze the object (vehicle and pedestrians), it is possible to increase the reliability of signal control by significantly increasing the accuracy of object detection and tracking through image analysis by establishing a signal system based on the detected object information, as well as increasing vehicle waiting time at intersections, and thus real-time image processing is possible in the field.
Patent KR-20220165861-A (KR)
Title: Inkjet printing apparatus
Inventor: CHO BYEONG HOON
IPC: B41J2/045
Filed: 2021-06-08
Abstract: The present invention is to provide an inkjet printing apparatus capable of varying the jetting pitch. An inkjet printing apparatus includes a stage; and an inkjet head located above the stage and including a plurality of nozzles through which ink including bipolar elements having regions partially doped with different polarities is ejected, wherein the plurality of nozzles are simultaneously deflected in one direction.
Patent KR-20220166048-A (KR)
Title: Method for analysing crack rate of electrode active material for secondary battery
Inventor: HONG SEUNG TAE
IPC: H01M4/02
Filed: 2021-06-09
Abstract: The present invention provides a method for analyzing the breakage rate of an electrode active material for a secondary battery, including the steps of: a) measuring the X-ray diffraction pattern of an electrode; b) obtaining a peak full width at half maximum (FWHM) value of the electrode active material in the electrode by data processing on the pattern; and c) calculating the breakage rate of the electrode active material according to equation 1.
Patent KR-20210154107-A (KR)
Inventor: LEE JEONG HOON
IPC: G01N1/28
Filed: 2021-06-11
Abstract: The present embodiments provide a sample solution enrichment separation apparatus and a manufacturing method thereof. The separation apparatus forms a containing space between a first channel and a second channel, connects a first ion exchange membrane with the first channel, connects a second ion exchange membrane with the second channel, applies electric field on the first ion exchange membrane and the second ion exchange membrane, and locates an interface between the containing space and the second channel in a middle of an electric field path between the first ion exchange membrane and the second ion exchange membrane. Therefore, the apparatus injects a target solution through the containing space and extracts the enriched target solution in a liquid, sol, or gel state.
Patent KR-20220168796-A (KR)
Title: Condensation improvement lighting fixtures
Inventor: SONG SUNG GEUN
IPC: F21Y113/00
Filed: 2021-06-17
Abstract: The present invention relates to a lighting fixture improving condensation, comprising: a lighting fixture body whose lower surface and peripheral surface are sealed and whose upper surface is open; an LED module installed on the inner bottom surface of the lighting fixture body and emitting light through the upper part which is open; a cover mounted on the upper part of the lighting fixture body to seal the opening of the lighting fixture body; and a condensation prevention unit mounted on the upper part of the LED module, supporting the cover while minimizing the space between the LED module and the cover, and preventing condensation from occurring on one surface of the cover adjacent to the LED module. Therefore, condensation occurring on the inner surface of the cover, which is a diffusion plate, can be improved by minimizing the area of the space where condensation occurs due to the temperature difference between a PCB and the cover, which is the diffusion plate, by the condensation prevention unit disposed at the top of the LED module and also, lighting efficiency can be enhanced by increasing the light distribution area of the light emitted from the LED module due to the shape of the plurality of lenses constituting the condensation prevention unit.
Patent KR-20220064887-A (KR)
Title: Sorting apparatus for combine
Inventor: KIM SE KYEONG
IPC: A01F12/18
Filed: 2021-06-22
Abstract: The present invention relates to a sorting and discharging apparatus for a combine. More specifically, the present invention relates to the sorting and discharging apparatus for the combine, which separates and discharges dry grass and rice plants mixed therewith by cutting the rice plants and the dry grass mixed in and discharged through a threshing process. The sorting and discharging apparatus for the combine of the present invention comprises: a cylindrical sorting screen unit; a conveying screw unit; a fixation cutting blade unit; and a movement cutting blade unit.
Patent KR-20230000524-A (KR)
Inventor: HAN WONSUK
IPC: H01L51/50
Filed: 2021-06-24
Abstract: Embodiments relate to a light emitting device with reduced leakage current, and a display device including the same and having improved display quality. The light emitting device according to one embodiment comprises: a first electrode; a second electrode overlapping the first electrode; m light emitting units located between the first electrode and the second electrode; and m-1 charge generation layers located between adjacent light emitting units. The charge generation layer includes n-type charge generation layers and p-type charge generation layers, wherein at least one of the n-type charge generation layers includes a dopant containing an alkali metal, and at least one of the n-type charge generation layers includes a dopant containing lanthanum metal, wherein the alkali metal and the lanthanum metal doped on the n-type charge generation layers are doped in different amounts, and m is a natural number of 3 or more.
Patent KR-20230005030-A (KR)
Title: Lignan inclusion liposome and method for preparing the same
Inventor: JUNG YU JIN
IPC: A61K8/33
Filed: 2021-06-30
Abstract: The present invention relates to: a lignin inclusion liposome which comprises a phospholipid bilayer comprising cholesterol and phosphatidylcholine, and a lignan supported inside the phospholipid bilayer; and a method for manufacturing the same. The present invention can provide a liposome with high lignan inclusion efficiency, thereby being able to be used as a pharmaceutical composition and a cosmetic composition for preventing, treating, or alleviating acne.
Patent KR-20230004144-A (KR)
Inventor: LEE HYOUN SUNG
IPC: C23C14/24
Filed: 2021-06-30
Abstract: A substrate supporting apparatus according to an embodiment of the present invention includes an electrostatic chuck configured to adsorb and fix the upper surface of a substrate; and a pressing unit configured to press the lower surface of the substrate when the substrate is fixed by the electrostatic chuck. The pressing unit may comprise a pressing member installed to be movable between a first position corresponding to an inner area of the substrate and a second position corresponding to an outer area of the substrate, and the pressing member may include a contact portion extending in the width direction of the substrate and making line contact with the lower surface of the substrate.
Patent KR-20230012892-A (KR)
Title: Game provider device, method and computer program for attacking player with one more effect item of one more probability type item
Inventor: KIM KANG AN
IPC: A63F13/46
Filed: 2021-07-16
Abstract: The present invention provides a method for providing a game for attacking an opponent player with an effect item, capable of attacking an opponent character with an effect item, wherein probability type items are combined, provided depending on a probability and deciding victory and defeat. According to an embodiment of the present invention, the method for providing a game attacking an opponent player with an effect item in which the appearance and a function value of the probability type item are combined includes: a step of generating a signal starting a first game by a game providing device; a step of allocating one or more first probability type items based on a predetermined probability within a predefined item group, in a retained point of a first player; a step of generating a first effect item corresponding to the one or more first probability type items by considering the appearance and the function value of the one or more first probability type items; a step of calculating a score of a second player by considering the first effect item; a step of calculating the score of the first player by considering a second effect item of the second player; a step of generating the signal finishing the first game while deciding the victory and defeat of the first game by comparing the score of the first player with the score of the second player; and a step of restarting the second game when the victory and defeat of the first game are not decided.
Patent KR-20230013555-A (KR)
Inventor: PARK BAE EOK
IPC: H02K17/42
Filed: 2021-07-19
Abstract: An electric energy conversion device according to one aspect of the present invention, where first direct current (DC) power obtained by performing half wave rectification of first alternating current (AC) power is applied comprises: an electromagnetic circuit unit including a first solenoid containing first output winding and a second solenoid containing first input winding and second output winding, wherein the iron core included in each solenoid is connected to form a closed circuit of an electron flux; and a first permanent magnet generating a first permanent magnetic flux and sharing the iron cores of the electromagnetic circuit unit as a moving path of the first permanent magnetic flux to configure closed circuits of the electromagnetic circuit unit and the first permanent magnetic flux, wherein the electromagnetic circuit unit generates an induced current in the first and second output windings by means of the electron flux generated and controlled by application of the first DC power to the first input winding and the first permanent magnetic flux whose flow is changed by the electron flux. Accordingly, the one-step conversion process where the magnetic energy of a permanent magnet is directly converted into electric energy reduces unnecessary energy loss to increase energy efficiency.
Patent KR-20210097659-A (KR)
Title: Laundry treating apparatus
Inventor: Jayoen KIM
IPC: D06F34/05
Filed: 2021-07-26
Abstract: The present invention relates to a laundry treating apparatus. The laundry treating apparatus comprises a cabinet forming an outer appearance, a drum rotatably installed in the cabinet and accommodating an object to be treated, a display unit provided in the cabinet to display information related to a laundry treatment course, a first communications module provided in the cabinet, and an optical sensor for detecting the fiber type of the object to be treated and a turbidity sensor for measuring contamination levels of wash water and rinsing water, which are accommodated in the drum together with the object to be treated. In accordance with the present invention, information on a recommended course, a required amount of detergent, and an expected number of rinses is displayed on the display unit of the laundry treating apparatus based on data detected by the optical sensor and the turbidity sensor. Therefore, a user may easily operate the laundry treating apparatus based on such information.
Patent KR-20230016432-A (KR)
Title: Pet essence built-in brush showerhead
Inventor: CHOI KYU JIN
IPC: A47K3/28
Filed: 2021-07-26
Abstract: The present invention relates to a brush showerhead containing essence for pets. The brush showerhead containing essence for pets, according to the present invention, comprises: a main body (10); a top cover (30); an essence holder (40); an intermediate cover (60); a bottom plate (80); and a ring cover (90). Therefore, the present invention can supply essence without supplying the essence from the outside.
Patent KR-20230018568-A (KR)
Title: Method for streaming content video and user terminal implementing the same method
Inventor: YANG SEUNG JOON
IPC: H04N21/24
Filed: 2021-07-30
Abstract: A method performed by a user terminal, according to an embodiment of the present invention, comprises the steps of: receiving a content image comprising video data and audio data in units of a plurality of frames from a server providing a streaming service; detecting some frames in which at least one of the video data and the audio data is missing among the plurality of frames of the received content image; and skipping image processing for some of the missing frames and performing image processing for frames subsequent to the missing frames, wherein the video data and audio data comprised in each of the plurality of frames are synchronized in real time. According to the present invention, even if data of some frames of the content video are lost due to limitations in the network environment and video processing capabilities of the device, displaying has no problems with the video on the screen stopping or being delayed.
Patent KR-20230018691-A (KR)
Inventor: SON MUN TAK
IPC: G01N35/00
Filed: 2021-07-30
Abstract: The present invention relates to a pipetting device. According to one aspect of the present invention, the pipetting device comprises: a main body; a pipette tip which is disposed on one side of the main body; a syringe unit which is connected to the pipette tip, to provide suction force to the pipette tip; a pipette tip separation unit which separates the pipette tip from the main body; and a manifold which is provided in the main body, to guide a movement path of the syringe unit and the pipette tip separation unit.
Patent KR-20230025234-A (KR)
Inventor: BAEK SEUNG DAE
IPC: B05B13/04
Filed: 2021-08-13
Abstract: Disclosed is a treatment liquid spray apparatus. The treatment liquid spray apparatus of the present invention includes: a swing head part swingably installed about a first axis; a tilting arm part connected to the swing head to be tilted and rotated around a second axis; a treatment liquid supply part installed in the swing head part and the tilting arm part; a spray nozzle part connected to the treatment liquid supply part and installed in the swing head part to spray the treatment liquid supplied from the treatment liquid supply part; and a tilting driving part connected to the tilting arm part to tilt and rotate the tilting arm part. Therefore, it is possible to improve the removal efficiency of foreign substances in a wafer part
Patent KR-20230025734-A (KR)
Inventor: SHIN DONG JUN
IPC: B27K5/00
Filed: 2021-08-16
Abstract: 본 발명의 기술적 요지는 수출입 장비나 설비 등의 해양 운송 중 발생하는 녹 현상에 대하여 방청 효과를 증진시킨 목재 포장 박스에 관한 것
Patent KR-20220027771-A (KR)
Title: Exhaust pipe device
Inventor: MATSUBA HIROSHI
IPC: H01J37/32
Filed: 2021-08-23
Abstract: An exhaust pipe device according to one embodiment comprises: a dielectric pipe; a wireless frequency electrode; a ground electrode; and plasma generating circuit. The wireless frequency electrode is disposed on the outer periphery side of the dielectric pipe and a wireless frequency voltage is applied to the wireless frequency electrode. The ground electrode is disposed on an end part side of the dielectric pipe so that a distance from the wireless frequency electrode is smaller on the inner-side than that of on the outer-side, and a ground potential is applied to the ground electrode. The plasma generating circuit generates plasma inside the dielectric pipe. The exhaust pipe device functions as one part of an exhaust pipe disposed between a film forming chamber and a vacuum pump that exhausts a gas inside the film forming chamber.
Patent KR-20230029419-A (KR)
Title: 룰투롤 유리 라미네이션 시스템 및 이를 사용한 유리의 라미네이션 방법
Inventor: KIM EUI HO
IPC: B32B38/00
Filed: 2021-08-24
Abstract: 롤투롤 유리 라미네이션 시스템이 제공된다. 롤투롤 유리 라미네이션 시스템은 유리 롤로부터 제1 면과 제2 면을 갖는 유리 리본을 풀도록 구성된 유리 언와인딩 유닛; 필름 롤로부터 필름을 풀도록 구성된 필름 피딩 유닛; 상기 유리 리본의 상기 제1 면 상에 상기 필름을 라미네이션하여 라미네이트를 생성하도록 구성되는 라미네이션 유닛으로서, 상기 라미네이션 유닛은 상기 필름과 상기 유리 리본의 상기 제1 면이 접촉하도록 라미네이션 공간 내에서 상기 유리 리본의 상기 제2 면 상으로 에어를 배출하도록 구성되는 에어 분사 장치를 포함하는, 라미네이션 유닛; 및 상기 라미네이트를 라미네이트 롤로 감도록 구성되는 라미네이트 와인딩 유닛을 포함한다.
Patent KR-20230031069-A (KR)
Title: 안전벨트반자동체결장치
Inventor: PARK DONG HAN
IPC: B60R22/18
Filed: 2021-08-26
Abstract: 본 발명은, 앵커리지부에 마련된 안전벨트반자동체결장치로서, 주행방향에서 전후로 선회되어 선택적으로 착좌자의 시야를 가리는 위치와 시야을 가리지 않는 위치에 위치결정될 수 있는 ㄱ자 형상의 시야가림바; 및 상기 시야가림바를 따라 전후진 가능하게 장착되어 상기 텅플레이트에 장착된 걸쇠를 포함하는 안전벨트반자동체결장치에 관한 것이다.
Patent KR-20230038926-A (KR)
Title: 염 매개의 핵산 고정화 방법, 상기 방법에 따라 고정화된 포획 핵산을 포함하는 고형 지지체, 상기 고형 지지체를 포함하는 측방 유동 분석 스트립, 및 표적 핵산 검출 방법
Inventor: PARK KI SOO
IPC: C12Q1/6834
Filed: 2021-09-13
Abstract: 본 발명은 염 매개의 핵산 고정화 방법, 상기 방법에 따른 고정화된 핵산 프로브를 포함하는 고형 지지체, 상기 고형 지지체를 포함하는 측방 유동 분석 스트립 및 표적 핵산 검출 방법 에 관한 것이다.   
본 발명의 염 매개의 핵산 고정화 방법에 따르면, 스트렙타비딘-비오틴, 자외선 조사, 및 열처리 등이 요구되는 종래의 방법에 비해 원심분리기, 자외선 조사 장치, 및 가열장치와 같은 값비싼 시약 또는 장비가 필요하지 않아 자원이 제한된 환경에서도 적용이 가능하고 생산 비용을 줄일 수 있다. 또한, 본 발명의 염 매개의 핵산 고정화 방법은 공정이 간소화되어 단시간 내에 공정을 완료될 수 있다. 또한, 본 발명에 따르면, 신호 강도가 현저히 개선되고, 장기 보관 안정성이 우수한, 고정화된 포획 핵산을 포함하는 고형 지지체를 제조할 수 있다.  
본 발명에 따라 제조된 고정화된 포획 핵산을 포함하는 고형 지지체는 측방 유동 분석 스트립을 포함한 다양한 진단 키트 또는 검출 키트에 적용이 가능하므로, 국내외 진단 키트 분야 및 산업의 발전에 큰 기여를 할 수 있을 것으로 기대된다. 
또한, 본 발명의 표적 핵산 검출 방법에 따르면 표적 핵산을 높은 민감도 및 특이도로 검출할 수 있다.
Patent KR-20230038946-A (KR)
Title: 강관 파일 연결구
Inventor: MOON JONG HOON
IPC: E02D5/28
Filed: 2021-09-13
Abstract: 본 발명은 인발 강도가 우수하고, 강관 파일의 회전 관입시 충분한 토크 저항 성능을 확보할 수 있으며, 작업자의 도움 없이 회전 근입 장비의 탈착이 용이한 강관 파일 연결구에 대한 것이다. 
본 발명은 상부 강관 파일과 하부 강관 파일의 연결 단부에 각각 구비되는 것으로, 외주면에 걸림부가 각각 돌출 형성되고, 서로 접하는 연결 단부에는 상호 대응되는 위치에 복수의 제1삽입홈부와 제2삽입홈부가 각각 형성된 제1연결링과 제2연결링; 원호 형상인 적어도 2 이상의 밴드유니트로 분할 구성되어 상기 제1연결링과 제2연결링의 외주면을 감싸는 것으로, 상기 밴드유니트의 내주면에는 상기 제1, 2연결링의 걸림부가 삽입되어 걸리는 걸림홈부가 형성되고, 상기 제1, 2연결링의 삽입홈부와 대응되는 위치에 관통공이 형성된 결합밴드; 및 상기 관통공을 관통하는 볼트 몸체와, 일측으로 길게 형성되어 상기 볼트 몸체의 전단에 구비되는 것으로 제1삽입홈부와 제2삽입홈부에 의해 형성된 삽입홈부에 삽입된 상태에서 회전하여 제1, 2연결링의 내측면에 걸리는 걸림헤드로 구성되어, 상기 밴드유니트의 외측에서 볼트 몸체의 후단에 체결되는 너트에 의해 밴드유니트를 제1, 2연결링에 고정하는 T형 고정볼트; 로 구성된다.
Patent KR-20230040572-A (KR)
Title: 치료영역 별 임상시험 데이터의 표준화 처리 시스템
Inventor: YOON BYUNG SUN
IPC: G16H70/20
Filed: 2021-09-16
Abstract: 본 발명은 치료영역 별 임상시험 데이터의 표준화 처리 시스템에 관한 것으로, 치료영역 별로 임상시험항목을 정의하고, 정의된 임상시험항목에 대한 메타데이터를 저장하는 데이터 저장부; 상기 데이터 저장부의 임상시험항목에 대하여 수집표준, 제출표준 및 분석표준에 따른 메타데이터를 제공하고, 임상시험항목에 대한 라이프사이클을 관리하는 데이터 자원부; 상기 데이터 저장부의 임상시험항목에 대한 메타데이터를 기초로 CRF(Case report form)를 생성하고, CRF에 임상시험데이터를 입력하고, 해당 CRF를 상기 데이터 자원부의 수집표준, 제출표준 및 분석표준에 맞게 변환하여 임상시험 설계 및 활동계획을 설정하는 임상시험데이터 자동화 처리부; 논문 데이터베이스 및 임상시험 데이터베이스에 저장된 자료를 치료영역 별로 분석하고, 분석 정보를 상기 데이터 저장부로 제공하여 상기 데이터 저장부의 임상시험항목에 대한 라이프사이클을 관리하는 학술 데이터베이스부; 상기 임상시험데이터 자동화 처리부의 임상시험 설계 및 활동계획 설정정보를 기초로 사용자가 원하는 코호트를 생성하고, 생성된 코호트에 대한 기초 분석, 가설 설정 및 가설 테스트를 수행하여 가설 테스트 결과를 제공하는 임상시험데이터 분석부; 및 상기 학술 데이터베이스부를 통한 자료 검색, 상기 임상시험데이터 분석부의 가설 테스트 결과, 및 상기 임상시험데이터 자동화 처리부의 임상시험 설계 및 활동계획 설정정보를 기반으로 임상시험 계획서 및 보고서 작성을 지원하는 임상시험 계획서 및 보고서 작성 지원부를 포함하는 치료영역 별 임상시험 데이터의 표준화 처리 시스템을 개시한다.
Patent KR-20230041163-A (KR)
Inventor: LEE JUNKYU
IPC: H04N1/00
Filed: 2021-09-17
Abstract: 스캐너를 사용하기 위해서는 카드리더기에 사원증으로 인증을 해야하며, 스캔한 문서와 데이터에 워터마크(사용자의 이름, 날짜, 시간등의 정보)를 표시하여, 스캔 작업에 대한 보안을 강화할 수 있다.
Patent KR-20230042968-A (KR)
Inventor: OH CHANG EUN
IPC: F21V5/00
Filed: 2021-09-23
Abstract: 본 발명은 바닥신호등에 관한 것으로, 더욱 상세하게는 바닥신호등을 설치할 때 바닥면이 고르지 않더라도 수평을 맞추면서 설치할 수 있어서 작업시간을 현저히 줄일 수 있을 뿐만 아니라, 하나의 바닥신호등 각각을 쉽게 교체할 수 있어서 관리가 용이한 바닥신호등에 관한 것이다. 
본 발명의 바람직한 실시예로 형성된 바닥신호등에 의하면 몸체에 다리부가 형성되고, 몸체를 수용할 수 있는 바닥지지부가 형성되며, 상기 바닥지지부에는 전원선요입부가 형성되어 있어서, 몸체가 바닥지지부에 의해서 완전히 수평을 맞출 수 있어서 설치가 간단하고, 비로 인해서 바닥이 일부 침하되더라도, 바닥지지부에 의해서 전체적으로 균형을 잡고 있기 때문에 설치된 상태가 잘 변형되지 않으며, 커넥터를 이용하여 이웃하는 바닥신호등간에 전원선을 서로 연결 및 분리할 수 있어서 유지보수가 편리한 등의 효과가 발생한다.
Patent KR-20220046469-A (KR)
Inventor: YAMANAKA SATOSHI
IPC: B23Q1/25
Filed: 2021-09-24
Abstract: In accordance with the present invention, provided is a fine-adjustment apparatus capable of shortening time for inclination adjustment. In accordance with the present invention, the fine-adjustment apparatus, which is interposed between a table base supporting a chuck table holding a workpiece to a holding surface to be rotatable, and a support frame supporting the table base to adjust a distance between the table base and the support frame, includes: a support member having upper, middle and lower parts, wherein the upper part is fixed to the table base, and the middle part is fixed to the support frame; a housing chamber formed on the support member; a piezoelectric actuator housed in the housing chamber and extendable in a vertical direction; and an elastic structure part enabling the housing chamber to be extended in a vertical direction by alternately forming a plurality of first slits partially cutting the middle part from a first side, and a plurality of slits partially cutting the middle part from a side opposite to the first side.