baber/WOPTO huggingface dataset:
Patent WO-2020000366-A1 (WO)
Inventor: ZOU YINGQUAN
IPC: B01J19/02
Filed: 2018-06-29
Abstract: The present invention relates to a method for preparing compounds of the following formulae (I) and (II), wherein X is a halogen, and R is hydrocarbyl, and a reactor specifically used for performing the method. The method comprises reacting yellow phosphorus with a compound of formula (III) in the reactor in the absence of a catalyst, characterized in that, in the reactor, the material of the surface in contact with the reaction space is a nickel-based alloy as a corrosion resistant alloy, or the reactor is entirely made of the nickel-based alloy as a corrosion resistant alloy in the thickness direction of the wall of the whole reactor. Since the present invention uses the nickel-based alloy, which is used as a corrosion resistant alloy, as the material for the reactor and accessories thereof, an improved corrosion prevention effect, compared to existing reactors and accessories thereof, can be achieved, and moreover, the cost is acceptable, and thus the method can be achieved in on industrial scale.
Patent WO-2019042058-A1 (WO)
Title: Three-dimensional memory devices and fabricating methods thereof
Inventor: CHEN ZIQI
IPC: H01L27/11578
Filed: 2018-07-30
Abstract: A method for forming a 3D memory device is disclosed. The method includes: forming an alternating dielectric stack including multiple first dielectric layers and second dielectric layers on a substrate; forming a channel hole penetrating the alternating dielectric stack, a first diameter of a lower portion of the channel hole being smaller than a second diameter of an upper portion of the channel hole; forming a channel structure including a functional layer in the channel hole, the functional layer including a storage layer; forming an electrode plug in the upper portion of the channel hole; replacing the storage layer in the functional layer in the upper portion of the channel hole with a second insulating layer; and replacing the second dielectric layers in the alternating dielectric stack with conductive layers.
Patent WO-2020029024-A1 (WO)
Inventor: HONG WEI
IPC: H04W76/12
Filed: 2018-08-06
Abstract: 本公开的实施例涉及飞行路径配置方法，包括：获取无人飞行器的飞行路径信息，其中，所述无人飞行器处于连接态；确定与所述无人飞行器存在通信连接的基站；向所述基站发送第一信令，其中，所述第一信令包含所述飞行路径信息，所述第一信令用于指示所述基站通过第二信令将所述飞行路径信息发送至所述无人飞行器。根据本公开的实施例，相对于相关技术而言，可以基于运营商的网络完成飞行路径的配置，无需建立专有链路，配置过程较为简单。
Patent WO-2019029505-A1 (WO)
Title: Implanted material capable of forming built-in electric field and preparation method therefor
Inventor: DENG XULIANG
IPC: A61L27/10
Filed: 2018-08-07
Abstract: An implanted material capable of forming a built-in electric field and a preparation method therefor, consisting of piezoelectric ceramic material having a multi-layer structure. The surface of the implanted material has sufficient osteoinductive activity and may improve bone bonding rate, significantly improve the repair of bone defects and improve early-stage osseointegration.
Patent WO-2020029068-A1 (WO)
Inventor: CHEN JIANTING
IPC: B01F15/02
Filed: 2018-08-07
Abstract: 一种化工反应釜投料装置，包括漏斗本体（1）；下料管（2），与漏斗本体（1）底部端口固定连接，用于与反应釜（200）上的进料管连接；气动马达（4），固定设置在漏斗本体（1）或下料管（2）上；转子（5），设置在下料管（2）内，由气动马达（4）驱动，下料管（2）截面呈矩形，与转子（5）相适配；疏通机构，设置在漏斗本体（1）内，由气动马达（4）驱动；气动马达（4）驱动转子（5）转动使物料由下料管（2）转出，疏通机构同步做上下往复移动，疏通漏斗本体（1）内的物料。
Patent WO-2019095744-A1 (WO)
Inventor: CHEN HAOHANG
IPC: A47L15/42
Filed: 2018-08-10
Abstract: L'invention concerne un dispositif de filtration continue pour un lave-vaisselle comprenant : un réservoir d'entrée d'eau, une entrée d'eau du réservoir d'entrée d'eau étant raccordée à un tuyau d'entrée d'eau, le réservoir d'entrée d'eau étant doté en interne d'une unité de filtration ; un réservoir de sortie d'eau, raccordé à une sortie du réservoir d'entrée d'eau, le réservoir de sortie d'eau étant raccordé à un tuyau de sortie d'eau ; et une pompe à eau, la pompe à eau étant disposée au niveau du tuyau d'entrée d'eau du réservoir d'entrée d'eau ou au niveau du tuyau de sortie d'eau du réservoir de sortie d'eau. Le dispositif filtre, au moyen de l'unité de filtration, le liquide de lavage contenant des résidus provenant du lave-vaisselle, ce qui permet de résoudre le problème selon lequel une partie du résidu flottant se fixe à la vaisselle et provoque une contamination secondaire de la vaisselle en raison du fait que le résidu alimentaire amené sur la vaisselle dans le processus de lavage d'un lave-vaisselle du type à immersion dans l'eau n'est pas totalement évacué dans le processus d'évacuation ; le dispositif peut améliorer l'effet de nettoyage de vaisselle et réduire le coût de fonctionnement du lave-vaisselle.
Patent WO-2019029700-A1 (WO)
Title: Synchronization method, submission method, and corresponding device
Inventor: SU LI
IPC: H04B17/309
Filed: 2018-08-10
Abstract: Provided are a synchronization method, a submission method, and a corresponding device capable of solving a problem in the prior art of high overheads incurred by a synchronization method implemented upon beam switching. The method comprises: a terminal apparatus receiving control signaling transmitted by a network apparatus, the control signaling comprising an indication parameter indicating a target beam to be switched to; and in response to the control signaling, the terminal apparatus performing beam switching according to the indication parameter, and adjusting a synchronization time according to a synchronization time adjustment amount.
Patent WO-2019095770-A1 (WO)
Inventor: Peng huai
IPC: H01Q1/42
Filed: 2018-08-27
Abstract: L'invention concerne un dispositif d'antenne, et un dispositif de commande à distance et un ensemble véhicule aérien sans pilote ayant le dispositif d'antenne. Le dispositif d'antenne comprend une antenne, une carte de circuit imprimé, un boîtier d'antenne et un manchon rotatif relié rotatif au boîtier d'antenne. L'antenne et la carte de circuit imprimé sont toutes deux logées dans le boîtier d'antenne, et le manchon rotatif est relié au boîtier d'antenne et peut tourner par rapport au boîtier d'antenne. Une extrémité de l'antenne est située dans le boîtier d'antenne et est électroconnectée à la carte de circuit imprimé, et l'autre extrémité de l'antenne passe à partir du boîtier d'antenne dans le manchon rotatif. Par le présent moyen, la présente invention peut éviter une exposition d'antenne.
Patent WO-2019020127-A1 (WO)
Title: Sit assist device
Inventor: KUNG CHI HUNG
IPC: A47C7/00
Filed: 2018-09-03
Abstract: A sit assist device (1) comprising a base (2) adapted to be supported by a seating surface, and a sitting platform (3) hingedly connected to the base (2) and movable between a raised position and a lowered position to assist a user to sit down onto and to stand up from the sitting platform (3). A primary biasing means (4) provides a primary resilient bias to resiliently bias the sitting platform (3) from the lowered position to the raised position over an operating range, thereby moving the sitting platform (3) from the lowered position to the raised position over the operating range as the user stands up from the sitting platform (3) and slowing the movement of the sitting platform (3) from the raised position to the lowered position over the operating range as the user sits down onto the sitting platform (3). A secondary biasing means (5) provides a secondary resilient bias to supplement the primary resilient bias over a portion of the operating range adjacent the lowered position.
Patent WO-2020047770-A1 (WO)
Title: Optical fingerprint sensor module and method for operating optical fingerprint sensor module
Inventor: LIU JUN
IPC: G06F3/044
Filed: 2018-09-05
Abstract: There is an optical biometric imaging device (102) configured to capture an image of an object (104) in contact with an outer surface (106) of the biometric imaging device (102), the biometric imaging device (102) comprising: an image sensor (200) comprising a photodetector pixel array (202) and image sensor circuitry configured to capture an image of the object (104) in contact with the outer surface of the imaging device (102); the image sensor (200) comprising a first electrically conductive structure (206) arranged adjacent to an active sensing area (208) of the photodetector pixel array (202); a display panel (210) arranged on top of and at a distance from the image sensor (200), the display panel (210) comprising a second electrically conductive structure (212) on a bottom side (214) of the display panel (210) and arranged to face the first electrically conductive structure (206) of the image sensor (200); and capacitive readout circuitry arranged and configured to detect a capacitance between the first electrically conductive structure (206) and the second electrically conductive structure (212).
Patent WO-2019196338-A1 (WO)
Title: Metal mesh touch control display structure and manufacturing method therefor
Inventor: FENG XIAOLIANG
IPC: G06F3/044
Filed: 2018-09-18
Abstract: A metal mesh touch control display structure and a manufacturing method therefor. The metal mesh touch control display structure comprises: a display assembly (700) and a metal mesh structure; the metal mesh structure comprises a bridge point (300), a first protective layer (800), a first metal circuit (100) and a second metal circuit (200), and a second protective layer (900); the first metal circuit (100) is isolated from the second metal circuit (200), the first metal circuit (100) forming a mesh pattern corresponding to the shape of a mutual capacitance first direction electrode, and the second metal circuit (200) forming a mesh pattern corresponding to the shape of a mutual capacitance second direction electrode; the first protective layer (800) is provided with a through-hole (310) corresponding to the bridge point (300), the second metal circuit (200) being in communication with the bridge point (300) by means of the through-hole (310); and the mesh circuit in a mesh pattern is manufactured on a light-shielding layer (610) between sub-pixels (600) of the display assembly (700). Also provided is a corresponding manufacturing method. The present metal mesh touch control display structure and manufacturing method therefor make the materials for touch control circuits widely available, and common metal materials meet requirements.
Patent WO-2020029383-A1 (WO)
Title: Pagination processing method and system, computer device and storage medium
Inventor: LI QI
IPC: G06F16/838
Filed: 2018-09-20
Abstract: A pagination processing method and system, a computer device, and a storage medium. The method comprises: acquiring a page configuration file from a back-end server, wherein the page configuration file contains several page templates; receiving a pagination request at a front-end page, wherein the pagination request contains a target data path and a unique code, with data information being acquired via the target data path and a page template being acquired via the unique code; computing the length of the data information, and obtaining the number of pages; invoking a pagination script to generate pagination, assigning a value of a header and a footer in the page template to a header variable and a footer variable, splitting the data information, and assigning a value to a data variable so as to obtain pagination information; and determining the number of buttons according to the number of pages, and returning the number of buttons and the pagination information to a user. Pagination is generated by means of a pagination script for invoking by a front-end developer, such that front-end access is more simple, and the workload of the front-end developer is greatly reduced.
Patent WO-2020062049-A1 (WO)
Title: 上行资源的配置与指示方法、装置和系统
Inventor: YANG XIANJUN
IPC: H04W72/04
Filed: 2018-09-28
Abstract: 本发明提供了一种高层信令的资源配置方法、装置和系统，所述方法包括：网络设备向终端设备发送第一配置信息，所述第一配置信息配置用于发送第一业务的混合自动重传请求的反馈信息(HARQ-ACK)的时频资源，和/或，所述第一配置信息配置不发送所述第一业务的HARQ-ACK；其中，所述第一业务的优先级高于第二业务的优先级。通过本实施例的方法，降低了第一业务传输的时延，并提高了其传输的可靠性。
Patent WO-2019076339-A1 (WO)
Title: Array substrate and manufacturing method therefor, and display device
Inventor: LONG CHUNPING
IPC: G02F1/1362
Filed: 2018-10-18
Abstract: A display substrate and a manufacturing method therefor, and a display device, relating to the technical field of display. The array substrate comprises multiple pixel units (1) arranged in a matrix; each pixel unit (1) comprises multiple pixel regions (11), and a display electrode (10) having a slit (101) is provided in each pixel region (11); the array substrate further comprises multiple data lines (2); each data line (2) comprises multiple data line segments (21), and any two adjacent data line segments (21) are electrically connected to each other, wherein in each pixel unit (1), the slits (101) of the display electrodes (10) in some pixel regions (11) are provided in parallel with the data line segments (21) adjacent to the display electrodes (10) in the data lines (2), and the slits (101) of the display electrodes in the remaining pixel regions (11) are not provided in parallel with the data line segments (21) adjacent to the display electrodes in the data lines (2).
Patent WO-2019237621-A1 (WO)
Inventor: CHEN YAOWU
IPC: G01S15/89
Filed: 2018-10-22
Abstract: 一种十字型的三维成像声纳阵列的稀疏优化方法，包括以下步骤：首先，基于十字型阵列，构建同时适用于近场和远场的波束方向图；然后，根据波束方向图构建稀疏优化所需的能量函数；接下来，在模拟退火算法中引入阵元位置扰动，并利用增加阵元位置扰动的模拟退火算法对能量函数进行稀疏优化，以增大稀疏优化的自由度，提高阵列的稀疏率；最后，经过上述优化后，获得稀疏优化后的十字型阵列。
Patent WO-2019080845-A1 (WO)
Title: Method for preparing propofol medium/long chain fat emulsion injection
Inventor: Fan Luyun
IPC: A61K31/05
Filed: 2018-10-23
Abstract: Disclosed is a method for preparing a propofol medium/long chain fat emulsion injection, the preparation method comprising: under the protection of nitrogen, dissolving glycerin and sodium hydroxide in water for injection, and controlling the aqueous phase temperature at 50ºC-80ºC; and under the protection of nitrogen, dissolving propofol, oleic acid and egg yolk lecithin in an soybean oil and a medium chain triglyceride, heating the oil phase to 50ºC-80ºC, shearing and stirring, and mixing the aqueous phase and the oil phase, shearing same to prepare a primary emulsion, and homogenizing the primary emulsion to obtain a final emulsion. A propofol medium/long chain fat emulsion injection prepared by the method is also disclosed.
Patent WO-2019080937-A1 (WO)
Title: Method and device for transmitting and receiving uplink control information
Inventor: ZHANG XINGWEI
IPC: H04W72/12
Filed: 2018-10-26
Abstract: Provided by the present application are a method and device for transmitting and receiving uplink control information, the transmitting method comprising: determining a mapping influencing factor, the mapping influencing factor being used to indicate a physical uplink shared channel (PUSCH) or the uplink control information; mapping the uplink control information to the PUSCH according to the mapping influencing factor; and transmitting the PUSCH to a base station. With the method and device for transmitting the uplink control information provided by the present application, a terminal may reasonably map uplink control information to a PUSCH and may reasonably transmit the uplink control information by means of the PUSCH.
Patent WO-2019105167-A1 (WO)
Inventor: FAN HUIMING
IPC: D21H25/18
Filed: 2018-10-31
Abstract: 一种新型的古籍增强加固方法，该处理方法为：首先将待处理的古籍放入密闭增强加固装置中，密封好后先后对系统进行抽湿操作和抽真空操作，使体系维持干燥，并且在负压下保持稳定后，开启风扇组（4），通过气体管道（15）直接将纳米级增强加固粉体送至增强加固装置中，或先通过超声雾化器（14）将增强加固剂溶液雾化，然后再通过气体管道（15）送至增强加固装置中，使待处理的古籍充分均匀地吸收增强加固剂，同时对古籍pH及湿度进行监测，实现对古籍的增强加固。
Patent WO-2019214196-A1 (WO)
Title: Spray-drying method for pogostemon cablin granular formulation
Inventor: ZHANG BAOXIAN
IPC: A61K9/16
Filed: 2018-11-09
Abstract: A spray-drying method for Pogostemon cablin granular formulation, comprising the following steps: taking a concentrated Pogostemon cablin extractum, adding 2% to 5% of beta-cyclodextrin, mixing uniformly, performing filtration, performing spray drying under conditions of an inlet air temperature of 175 °C to 180 °C and an outlet air temperature of 90 °C to 95 °C and collecting dry powders. The concentrated extractum has a relative density of 1.02 to 1.10 at 60 °C.
Patent WO-2019153814-A1 (WO)
Inventor: WANG DEPING
IPC: F24F110/10
Filed: 2018-11-09
Abstract: 一种遥控器控制方法及装置，属于空调技术领域，该方法包括：获取环境温度信号；转换环境温度信号为数字信号；判断数字信号是否与设定温度参数相等；若否，控制空调以第一运行温度参数运行，直至数字信号等于设定温度参数；其中，第一运行温度参数与设定温度参数的差值为设定值。
Patent WO-2019100978-A1 (WO)
Inventor: GAO YULONG
IPC: B44C5/04
Filed: 2018-11-14
Abstract: 一种装饰片，包括：承载体（20），该承载体（20）包括第一表面以及与第一表面相对设置的第二表面；固态薄膜（10），该固态薄膜（10）位于承载体（20）第一表面，其中，该固态薄膜（10）厚度不大于1μm。另外还公开了一种包括该装饰片的电子设备盖板。
Patent WO-2019096267-A1 (WO)
Title: Configuration et gestion de zones de notification de réseau d'accès radio
Inventor: TSENG YUNGLAN
IPC: H04W48/10
Filed: 2018-11-16
Abstract: L'invention concerne un procédé de gestion de zones de notification (RNA) de réseau d'accès radio (RAN) pour un équipement d'utilisateur (UE). Le procédé comprend les étapes consistant à recevoir, par l'UE, un premier message de gestion des ressources radioélectriques (RRC) comprenant une première configuration de zones de notification (RNA) de réseau d'accès radio (RAN); stocker, par l'UE, la première configuration de RNA, lorsque l'UE est dans un état RRC connecté, un état RRC inactif, ou une transition entre l'état RRC inactif et l'état RRC connecté; et appliquer, par l'UE, une procédure de mise à jour de RNA, selon la première configuration de RNA, lorsque l'UE est dans l'état RRC inactif.
Patent WO-2020107340-A1 (WO)
Inventor: LU QIANXI
IPC: H04W36/00
Filed: 2018-11-29
Abstract: 一种数据处理方法、第一网络设备、第二网络设备、终端设备及存储介质。该方法包括：第二网络设备确定是否将数据包前转至第一网络设备（S201）；第一网络设备确定是否等待接收第二网络设备前转的数据包（S301）；终端设备接收第一网络设备发送的第一类型数据包（S401）。
Patent WO-2020093545-A1 (WO)
Title: Brightness adjusting method for display system, brightness adjusting system and display system
Inventor: KANG CHIH TSUNG
IPC: G09G3/34
Filed: 2018-12-20
Abstract: A brightness adjusting method for a display system comprises the following steps: writing a first drive signal to a display panel (S1); controlling simultaneous turning on of a first lens and a backlight module, wherein multiple light-emitting elements of the backlight module are simultaneously turned on, and the first lens and the multiple light-emitting elements of the backlight module are simultaneously turned on (S2); adjusting a first drive current of each light-emitting element (S3); writing a second drive signal to the display panel (S4); controlling simultaneous turning on of a second lens and the backlight module, wherein the multiple light-emitting elements of the backlight module are simultaneously turned on, and the second lens and the multiple light-emitting elements of the backlight module are simultaneously turned on (S5); and adjusting a second drive current of each light-emitting element (S6).
Patent WO-2019218680-A1 (WO)
Title: Single-layer inner ring-free intersecting cable support structure
Inventor: XUE SUDUO
IPC: E04B1/342
Filed: 2018-12-26
Abstract: A single-layer inner ring-free intersecting cable support structure, belonging to the field of spatial single-layer cable support structures, and consisting of two components, a saddle-shaped outer ring (3) not arranged in a same plane, and a single-layer spatial cable net system consisting of a plurality of intersecting cables. The outer ring of the structure is a saddle-shaped curve, a portion of the cables within the saddle-shaped curved surface protrude downwards to form load-bearing cables (1) used for resisting downward loads such as weight and rain/snow, and the other portion of the cables protrude upwards to form stabilising cables (2) used for resisting upward loads such as wind suction forces. The structure has advantages such as a reasonable arrangement, significant continuous collapse resistance, a lightweight model and good structural aesthetics, is easy to manufacture and construct, and has good engineering practice feasibility.
Patent WO-2020000978-A1 (WO)
Title: 一种三维结构超材料
Inventor: LIU RUOPENG
IPC: H05K9/00
Filed: 2018-12-29
Abstract: 本发明公开了一种三维结构超材料，该三维结构超材料包括：由多个导电几何单元组成的多面体结构，多面体结构的数量为多个并呈周期排布，且多面体结构的任意导电几何单元上均设有电子元件，导电几何单元包括有导电几何结构，导电几何结构与导电几何单元上的电子元件电性连接。本发明的上述技术方案，提供了一种具有三维结构的超材料，通过采用超材料微结构与电子元件的结合，并通过利用这种全新设计的三维结构超材料，使其有低频吸波性能，且吸波效果比较理想。
Patent WO-2019144798-A1 (WO)
Inventor: CHEN YANG
IPC: C12Q1/68
Filed: 2019-01-08
Abstract: L'invention concerne un procédé d'analyse d'une différence d'interaction de chromatine dans des échantillons dans différents états, en particulier, se rapportant à un procédé d'analyse d'interaction de chromatine différentielle par combinaison d'informations d'interaction voisine.
Patent WO-2019144895-A1 (WO)
Title: Anti-cd47 antibodies that do not cause significant red blood cell agglutination
Inventor: ZHAO TAO
IPC: A61K39/395
Filed: 2019-01-24
Abstract: Provided are antibodies including monoclonal, human, primate, rodent, mammalian, chimeric, humanized and CDR-grafted antibodies, and antigen binding fragments and antigen binding derivatives thereof. These antibodies bind to CD47 protein, particularly human CD47, modulate, e.g., inhibit, block, antagonize, neutralize or otherwise interfere with CD47 expression, activity and/or signaling, including inhibiting CD47 and SIRPa interaction; do not cause a significant level of hemagglutination of human red blood cells. These antibodies may not enhance RBC phagocytosis.
Patent WO-2019157937-A1 (WO)
Inventor: KIMBA DIT ADAMOU BOUBACAR
IPC: H04W36/00
Filed: 2019-01-28
Abstract: 本公开实施例提供一种条件切换方法、相关设备及计算机可读存储介质。该方法用于源网络单元，包括：接收指示信息，指示信息指示终端执行条件切换CHO；发送终端对应的待迁移数据到终端执行的CHO对应的第一目标网络单元。
Patent WO-2019223362-A1 (WO)
Inventor: CHEN HUAJIE
IPC: G06F16/33
Filed: 2019-01-29
Abstract: 本发明提供的自动问答方法及装置，先获取用户问题语句与候选问题集，再利用通过问题语句训练样本对注意力神经网络进行训练得到的问题模型，从所述候选问题集中确定出与所述用户问题语句相匹配的问题语句，作为目标问题语句，最后采用所述目标问题语句对应的答案信息，对所述用户问题语句进行回应，利用注意力神经网络的特性，使利用所述问题模型实现的自动问答过程及结果更具有可解释性，提高了自动问答效果。
Patent WO-2019192302-A1 (WO)
Title: Battery pack and charging bank
Inventor: GENG ZHENG
IPC: H01M10/42
Filed: 2019-03-14
Abstract: The present disclosure discloses a battery pack detachably connected to an electrical tool or a charger. The battery pack comprises: a housing; a battery cell group comprising a plurality of electrically connected battery cells disposed in the housing; a first voltage monitoring module for monitoring the voltage of each battery cell and/or the total voltage of the battery cell group; a control module electrically connected to the first voltage monitoring module for controlling a charging process of the battery cell group; a second voltage monitoring module for monitoring the voltage of each battery cell to detect whether the battery cell is in an overvoltage state; and a protection module electrically connected to the second voltage monitoring module for cutting off the charging path of the battery pack when the second voltage monitoring module detects a battery cell in an overvoltage state. The present disclosure also discloses a charging bank comprising the above battery pack. The battery pack of the present disclosure has dual protection and can improve the safety of charging operations.
Patent WO-2020172949-A1 (WO)
Title: Turnout apparatus for overhead monorail
Inventor: KOU ZIMING
IPC: B61L5/04
Filed: 2019-04-03
Abstract: A turnout apparatus for an overhead monorail, comprising a frame (11), an input fixed rail (12) which docks an input rail, an output fixed rail which docks an output rail, and a movable rail which is provided between the input fixed rail (12) and the output fixed rail; the input fixed rail (12) is provided at one end of the frame (11); the output fixed rail comprises a first output fixed rail (131) and a second output fixed rail (132), and the first output fixed rail (131) and the second output fixed rail (132) are each provided at the other end of the frame (11); the movable rail comprises a first movable rail (141) which may simultaneously dock the input fixed rail (12) and the first output fixed rail (131), and a second movable rail (142) which may simultaneously dock the input fixed rail (12) and the second output fixed rail (132); the first movable rail (141) and the second movable rail (142) are fixed together and can both rotate by using the horizontal line as the axis; and the directions in which upper rail surfaces of the first movable rail (141) and the second movable rail (142) face in the circumferential direction differ by 180 degrees.