baber/WOPTO huggingface dataset:
Patent WO-2021142935-A1 (WO)
Title: Front sealing door of laundry treatment device and laundry treatment device
Inventor: LIU CHUNYI
IPC: D06F37/26
Filed: 2020-03-24
Abstract: A front sealing door of a laundry treatment device and a laundry treatment device. A front sealing door (10) comprises a laundry access opening and a detergent box insertion opening (103). A first mounting concave portion (141) used for assembling a door body for opening and closing the laundry access opening is provided on the front side surface of the front sealing door (10). The detergent box insertion opening (103) is provided in the first mounting concave portion (141). At least one part of the edge of the detergent box insertion opening (103) gets close to a part of the edge of the first mounting concave portion (141), and corresponds to a part of the edge of the first mounting concave portion (141) in shape.
Patent WO-2021217611-A1 (WO)
Title: Procédé et appareil de synchronisation d'informations
Inventor: WANG CHUNBO
IPC: H04L29/12
Filed: 2020-04-30
Abstract: La présente invention porte, selon certains modes de réalisation, sur des procédés et sur un appareil de synchronisation d'informations. Un procédé au niveau d'un nœud de gestion de données consiste à recevoir un premier message comprenant une identité d'une première passerelle à partir de la première passerelle. La première passerelle dessert une session d'un dispositif terminal. Le dispositif terminal accède à un réseau à partir d'une seconde passerelle. Le procédé consiste en outre à envoyer un second message comprenant l'identité de la première passerelle à un serveur d'authentification, d'autorisation et de comptabilité (AAA). Le premier message comprend en outre une première indication selon laquelle le dispositif terminal accède au réseau à partir de la seconde passerelle.
Patent WO-2020228630-A1 (WO)
Inventor: WANG RUI
IPC: H04W24/08
Filed: 2020-05-09
Abstract: A communication method and a communication apparatus. The method comprises: a terminal device receives measurement configuration information from a network device, the measurement configuration information indicating at least one measurement area, and each measurement area being associated with at least one target to be measured; when in an idle state or a third state, the terminal device measures the target to be measured according to a camped cell and the measurement configuration information. The terminal device can measure, when in an idle state or a third state, a target to be measured that requires measurement, thereby avoiding waste of resources caused by measurement of all targets to be measured.
Patent WO-2021088344-A1 (WO)
Inventor: CHENG WEIMING
IPC: G01S5/02
Filed: 2020-05-14
Abstract: 一种多点定位系统仿真测试方法，其包括可以控制模拟仿真环境的监控软件；获取相应发射参数，并转化为实际模拟信号的信号发生器；提供高精度时钟频率信号的时钟源；根据高精度时钟信号和配置参数对发射信号延时的延时器，通过将模拟信号通过不同的延时，可以根据监控软件进行调整，发送给多个多点定位系统的接收站，比对模拟信号位置与中心站计算结果的偏差，评估系统的定位误差，解决了无法在建设安装前对多点定位系统的性能进行全面的分析和测试的问题。通过在实验室建立多点定位系统的实物仿真测试平台，可以不受空间和时间等因素的限制，同时最大程度的模拟真实的系统运行环境。
Patent WO-2021232179-A1 (WO)
Inventor: LI CHUNXIA
IPC: H04W4/40
Filed: 2020-05-18
Abstract: D'une manière générale, divers aspects de la présente divulgation concernent la communication sans fil. Selon certains aspects, un équipement utilisateur (UE) peut transmettre une indication d'intérêt de véhicule à tout (V2X) qui indique que l'UE est intéressé par la communication sur une fréquence qui prend en charge un service V2X. L'UE peut passer à une fréquence qui prend en charge le service V2X. La divulgation concerne également de nombreux autres aspects.
Patent WO-2020233561-A1 (WO)
Inventor: WANG JINHU
IPC: A62B1/10
Filed: 2020-05-19
Abstract: 本发明提供一种高楼逃生器，包括外壳，外壳内设有供绳索穿过的通道，在外壳内设有压绳装置，压绳装置包括压轮，顶压压轮压紧绳索的压轮装置，所述的压绳装置为至少一组，每组压绳装置均包括相对设置的压轮，绳索从每组相邻两压轮之间穿过。本发明的有益效果：本发明将高楼逃生器设计为与预设的绳索配合的装置，逃生器本身没有存储绳索，导致产品体积小，重量轻，适用人群广。
Patent WO-2021031637-A1 (WO)
Inventor: TAN TIANLONG
IPC: G06Q10/02
Filed: 2020-05-20
Abstract: 一种基于空闲行程车辆的预约出行订单的派单方法和装置，该方法和装置应用于出行打车系统的服务器，具体为获取预约出行订单(S1)，并获取每个预约出行订单的预约出发位置和预约出发时间；根据预约出发位置获取预设范围内的多个空闲行程车辆(S2)；判断确定预约出行订单是长时预约单还是短时预约单，将长时预约单通过广播形式发送到多个空闲行程车辆和非空闲行程车辆(S3)；对于短时预约单，则通过贪心算法对短时预约单和空闲行程车辆的车辆信息进行计算，得到目标车辆(S4)；将短时预约单发送给目标车辆(S5)。针对相应的预约出行订单通过贪心算法选择相应目标车辆，实现了约束条件下的最大派单匹配，从而避免了基于距离的派单模式和抢单模式中全局效率问题。
Patent WO-2021237459-A1 (WO)
Title: Industrial object model-based data processing method, apparatus and device
Inventor: GUO CHENGBIN
IPC: G06F16/20
Filed: 2020-05-26
Abstract: An industrial object model-based data processing method, applicable to the field of the industrial Internet of things and comprising: constructing an object model according to industrial field scene requirements, screening, according to the object model, industrial data collected by a sensor, and determining model data corresponding to the object model (S101); constructing object data of the object model according to the model data of the object model at multiple time points (S102); and performing matrix transformation processing on the object data according to a preset processing rule to obtain a processing result (S103). According to the method, the object model is constructed in advance, the object data corresponding to the object model is obtained, and the object data is processed according to the preset processing rule to obtain the processing result. The object model construction and matrix transformation method makes the industrial data processing process simpler and more unified, so that the processing efficiency of industrial data is improved and resources are saved.
Patent WO-2020253537-A1 (WO)
Inventor: WU YAO
IPC: C12Q1/68
Filed: 2020-06-03
Abstract: Provided in the present invention is a method for rapidly detecting African swine fever virus on the basis of a CRISPR-Cas13a nucleic acid protein complex: on the basis of Cas13a and under the guidance of crRNA, corresponding gene DNA of ASFV is specifically cleaved while a feature of non-specific ssRNA cleavage activity is produced for detecting nucleic acid.
Patent WO-2021031697-A1 (WO)
Title: Axle box structure allowing turnery without unmounting wheels
Inventor: ZHOU GUANYING
IPC: B23Q3/06
Filed: 2020-06-28
Abstract: An axle box structure allowing turnery without unmounting wheels, comprising an axle box (1) and a supporting surface provided at the bottom of the axle box (1). One side of the axle box (1) is provided with a pressing plate (2), and the upper surface of the pressing plate (2) is parallel to the supporting surface, so that an installation plane is provided without providing a hole on the axle box (1) to stably clamp the axle box (1), thus effectively avoiding the reduction of the strength of the axle box (1). There is no necessary to use additional auxiliary structures, such that the structure of the axle box is simplified, the production cost and manufacturing difficulty of the axle box are lowered.
Patent WO-2021217903-A1 (WO)
Inventor: CHANG JIANG
IPC: F21S10/04
Filed: 2020-07-17
Abstract: A wick and an electronic candle. The wick comprises a first body (11) and a light-transmissive second body (12). The second body (12) is hollow, the second body (12) is mounted on the first body (11), and two light-emitting elements (21) are provided in a cavity formed by the first body (11) and the second body (12). The wick is designed to be hollow, and the light-emitting elements (21) are disposed inside, so that the wick can emit light stably, and the candlelight effect created is stable. The present application can be widely applied in the technical field of lighting decoration products.
Patent WO-2021023060-A1 (WO)
Inventor: SHI DONGYANG
IPC: H01M2/14
Filed: 2020-07-28
Abstract: The present application relates to a secondary battery and a battery pack. The second battery comprises: a housing comprising a shell and a top cover component connected to each other, wherein the shell is provided with an opening, the top cover component comprises a top cover plate and an electrode terminal connected to the top cover plate, and the top cover plate covers the opening; an electrode component accommodated in the shell, wherein the electrode component comprises a main body and a tab extending out of the main body, and the tab is electrically connected to the electrode terminal; an explosion-proof valve connected to the housing; and an insulation part at least partially arranged between the electrode component and the explosion-proof valve, wherein a projection, on the main body, of the explosion-proof valve is at least partially covered by the insulation part. The secondary battery and the battery pack provided in the embodiments of the present application can lengthen the path of the diffusion of free lithium ions inside an electrode component to an explosion-proof valve in case of a short circuit, thus extending the time it takes for the explosion-proof valve to corrode and prolonging the service life of the secondary battery.
Patent WO-2022021072-A1 (WO)
Inventor: CHI CHONGWEI
IPC: C07D209/60
Filed: 2020-07-28
Abstract: A preparation method for indocyanine green acid triethylamine salt, comprising the following steps: reacting 2, 3, 3-trimethyl-1-(4-sulfobutyl)-4, 5-benzindole betaine, 2-[6-(N-acetylanilino)-1, 3, 5-hexatriene-1-yl]-3, 3-dimethyl-1-(4-sulfobutyl)-4, 5-benzindole betaine and triethylamine in an organic solvent at the temperature of 0℃-40℃; and after the reaction is finished, adding the obtained product into methyl tertiary butyl ether or isopropyl ether to obtain a powdery indocyanine green acid triethylamine salt. The obtained powdery indocyanine green acid triethylamine salt solves the problem that the oily matter of indocyanine green acid triethylamine salt is difficult to industrially produce.
Patent WO-2020259718-A1 (WO)
Inventor: CHENG YONG
IPC: G01S5/02
Filed: 2020-08-06
Abstract: A federated learning-based indoor positioning method, apparatus, and terminal device, and a computer-readable storage medium. Establishing an indoor positioning training data set for terminal devices (S100); the terminal devices perform model training on the basis of the indoor positioning training data set so as to obtain a model parameter update (S200); transforming the model parameter update to an overall model parameter for terminal devices to undergo indoor positioning (S300).
Patent WO-2021243844-A1 (WO)
Title: 一种热饮机
Inventor: JIN WEN
IPC: A47J31/00
Filed: 2020-08-10
Abstract: 一种热饮机，包括冲泡组件（1）和主机（2）；冲泡组件（1）包括加工斗（11）和中空的过滤组件（12），加工斗（11）设有流体入口（111）和流体出口（112）；过滤组件（12）可拆卸地设置在加工斗（11）内且过滤组件（12）的一端与流体出口（112）连通，过滤组件（12）位于流体入口（111）和流体出口（112）之间；主机（2）包括用于向加工斗（11）内间歇性供应带微压热水的供水机构（23）、用于向加工斗（11）内供应气体的供气加压装置（24）；供水机构（23）、供气加压装置（24）均可与流体入口（111）密封连通。热饮机，能够方便、灵活地控制热饮的排出。
Patent WO-2021032176-A1 (WO)
Title: Self-locking anchorage device with low stress loss and low retraction
Inventor: HUO BINGXU
IPC: E01D22/00
Filed: 2020-08-20
Abstract: Disclosed is a self-locking anchorage device with a low stress loss and a low retraction, comprising an anchor plate (2), wherein the anchor plate (2) is provided with inner cone holes (21), a split-type cone-shaped clamping piece (10) is provided in each inner cone hole (21), and the split-type cone-shaped clamping piece (10) at least comprises two claw-type lock pieces; on one side of the split-type cone-shaped clamping piece (10), the claw-type lock pieces are synchronously locked or released by means of a synchronous adjustment structure (6), so as to lock or release the locking of same on a steel strand (11); and the other side of the synchronous adjustment structure (6) is provided with a follow-up spring (4) and a limiting assembly that compresses or releases the follow-up spring (4), the limiting assembly compresses the follow-up spring (4) to push the split-type cone-shaped clamping piece (10) to enter the inner cone hole (21) so as to lock the steel strand (11), and the limiting assembly releases the follow-up spring (4) to release the clamping of the steel strand (11) by the split-type cone-shaped clamping piece (10). The anchorage device has a simple structure, the steel strands can be conveniently mounted and adjusted in two directions, and the construction efficiency is greatly improved.
Patent WO-2022032707-A1 (WO)
Inventor: YUAN ZHIZHOU
IPC: B02C25/00
Filed: 2020-08-21
Abstract: 一种智能立磨装置及其磨制方法，包括磨盘（5），其设置在中空的机壳壳体（1）内底部的机架（4）的上方；机架（4），其上设置有电机；中空管（11），电机的输出端与磨盘（5）下的行星齿轮减速箱传动连接，磨盘（5）和行星齿轮减速箱中的太阳轮传动连接；动鄂板（13），其固定连接并覆盖在磨盘（5）的外周向壁上。该装置和方法，有效避免了现有技术中立磨在加工粗骨料时的下列缺陷：破碎区域内的物料常常出现板结和堵塞，台时产量低，能耗高，产品大小单一；生产不同的产品对立磨的调整困难，要调整立磨来生产出不同的产品规格必须整机停产停机入内检修调整；机壳内工作环境差，劳动强度大而费时费力，使得立磨生产效率低和安全可靠性低。
Patent WO-2021057462-A1 (WO)
Inventor: HONJO KENICHI
IPC: H04N5/232
Filed: 2020-09-08
Abstract: An image jitter correction device and a control device thereof, a photographing device (100), a control method, and a program. The image jitter correction device comprises a first lens and a second lens that correct an image jitter in a direction crossing an optical axis. A control circuit comprises a circuit configured as follows: obtaining a first vibration signal displaying vibration from a vibrating sensor, and on the basis of the first vibration signal, enabling the first lens to vibrate at frequency of a first frequency band, and enabling the second lens to vibrate at frequency of a second frequency band which is higher than that of the first frequency band, thereby correcting the image jitter.
Patent WO-2021135377-A1 (WO)
Title: Graphene uv pressure-sensitive adhesive and preparation method therefor
Inventor: LUYAO JIANG
IPC: C09J183/07
Filed: 2020-09-11
Abstract: A graphene UV pressure-sensitive adhesive and a preparation method therefor. The graphene UV pressure-sensitive adhesive has a formula comprising the following raw materials: aromatic carbamate acrylate, aliphatic carbamate acrylate, polysiloxane acrylate, a reactive diluent, a tackifying resin, a photosensitive initiator, a stabilizer, graphene, a carbon nanotube, a carbon interface treating agent, a silane coupling agent, and a functional additive. The graphene UV pressure-sensitive adhesive is light in weight, viscoelastic, fine and uniform in cross-section foam pores, is firm in bonding with a base material due to the interaction between a graphene nanometer thin film and an organic silicon material base body, excellent in compression resistance, impact resistance and thermal stability, and applicable to lightweight application scenes such as sealing shock absorption, microwave absorption, electromagnetic shielding, and heat dissipation protection. Compared with the prior art, the graphene UV pressure-sensitive adhesive has the following physical properties: the electromagnetic and thermal simultaneous shielding performance is achieved, the weight ratio and volume ratio are properly controlled, the curing rate and curing degree are good, and the excellent mechanical strength and reliable stability are achieved by means of the synergistic effect of the components.
Patent WO-2022067563-A1 (WO)
Inventor: WANG QINGHUI
IPC: H04W4/80
Filed: 2020-09-29
Abstract: The present application relates to the field of Bluetooth communications, and disclosed therein are Bluetooth chips, a signal receiving method and a Bluetooth communication apparatus, which are used to improve the signal strength of a received signal when an object is shielded, and to select a Bluetooth radio frequency (RF) channel corresponding to an antenna having better directivity. A Bluetooth chip comprises: a first Bluetooth RF channel, which is coupled to a first antenna; a second Bluetooth RF channel, which is coupled to a second antenna; and a Bluetooth baseband, which is respectively coupled to the first Bluetooth RF channel and the second Bluetooth RF channel, and which is used to selectively receive, by means of at least one among the first Bluetooth RF channel or the second Bluetooth RF channel, a signal transmitted by a transmitting device.
Patent WO-2021238008-A1 (WO)
Title: Hydraulic compound bushing, and sealing method for same
Inventor: DING XINGWU
IPC: B62D7/22
Filed: 2020-09-30
Abstract: A hydraulic compound bushing (100, 200) and a sealing method for same. The hydraulic compound bushing (100, 200) comprises: a core shaft (10, 210), provided with a continuous helical fluid channel (11, 211) at an outer surface thereof; a rubber member (20, 220) sleeved onto the core shaft (10, 210) and having two recesses provided at a radial-direction outer side thereof, said recesses being radially opposite to each other and corresponding to the fluid channel (11, 211); a support ring (30, 230) sleeved on the rubber member (20, 220) and covering the fluid channel (11, 211) and forming hydraulic cavities (40, 240) used to accommodate a hydraulic fluid; an outer cover (50, 250) provided at and pressing against a radial-direction outer side of the support ring (30, 230); and a sealing device (80) provided at an end portion of a fluid channel tube (60, 260), wherein the fluid channel tube (60, 260) is provided within the fluid channel (11, 211), and has two ends that respectively pass through the rubber member (20, 220) in the radial direction and extend into the two hydraulic cavities (40, 240), such that the two hydraulic cavities (40, 240) mutually communicate via the fluid channel tube (60, 260). The sealing device (80) is provided at two ends of the fluid channel tube (60, 260). One end of the sealing device (80) is provided in the fluid channel (11, 211), and another end passes through the rubber member (20, 220) and extends into the hydraulic cavities (40, 240), thereby forming a seal between the fluid channel tube (60, 260) and the fluid channel (11, 211).
Patent WO-2021068957-A1 (WO)
Title: Treatment and prevention of nephrotoxin-induced kidney injuries
Inventor: PEEL MICHAEL
IPC: A61K38/13
Filed: 2020-10-12
Abstract: Provided herein is Compound I or a pharmaceutically acceptable salt thereof for use in the prevention and/or treatment of a kidney condition or disease in a subject exposed to a nephrotoxin capable of inducing said kidney condition or disease.
Patent WO-2021082940-A1 (WO)
Inventor: DONG MINGZHU
IPC: D06F29/00
Filed: 2020-10-15
Abstract: A combined household appliance structure, comprising a first laundry treating tub (1) and a second laundry treating tub (2). The first laundry treating tub (1) and the second laundry treating tub (2) are fixedly connected together by means of a connecting frame (4). A relief space is further formed between a first end and a second of the connecting frame (4). The relief space is used for accommodating a functional structure (3). After the two tubs are connected by means of a connecting structure, a middle part therebetween provides enough structural space for the integration of multiple functions, and "multiple purposes" can be achieved. Because the first and second laundry treating tubs (1, 2) are connected together, weight is increased, and vibration can be significantly reduced; moreover, the two are consistent in vibration, and perform treatment together. The first and second laundry treating tubs (1, 2) can be counterweights for each other, or the counterweights can be eliminated. The height from the ground of the functional structure (3) disposed in the middle is much lower than that of said structure disposed on the second laundry treating tub (2), and therefore, operations are facilitated. Using the space formed by the connecting frame (4) to dispose the functional structure (3) facilitates operations.
Patent WO-2021073618-A1 (WO)
Title: Capacitive intelligent workstation detection system
Inventor: XIONG YU
IPC: G01V3/08
Filed: 2020-10-16
Abstract: A capacitive intelligent workstation detection system, comprising a capacitance detection sensor (1), a capacitive sensing module (201), a microprocessor module (202), a remote management platform (3) and a mobile APP, the capacitance detection sensor (1) detecting a capacitance change when a human body approaches, and after being processed by the capacitive sensing module (201), the capacitance change being sent to the microprocessor module (202) to form workstation state data, the workstation state data being sent to the remote management platform (3), and the remote management platform (3) processing the workstation state data, so as to obtain user habit data. A user uses the mobile APP to obtain relevant data by means of the remote management platform (3), and sends debugging and control information to a workstation detection device (2). The system uses the capacitive sensing module (201), has a small volume, a good concealment, a beautiful appearance and a flexible design, does not require complex optical and microwave devices and has no mechanical device, is less vulnerable to aging and abrasion, and has a long service life and good consistency. The remote management platform (3) serves as a data management and control center, and the mobile APP provides man-machine bidirectional interaction, so as to implement office electric appliance linkage energy-saving management and personnel management.
Patent WO-2022052227-A1 (WO)
Inventor: SHAN SHENGDAO
IPC: C02F11/04
Filed: 2020-10-23
Abstract: 一种沼液在厌氧发酵中高值回用的方法，属于厌氧发酵领域，解决了现有技术中利用猪粪等畜禽粪便进行厌氧发酵生产沼气时的产气效率不高的问题，解决该问题的技术方案主要是将猪粪经36℃±2℃恒温厌氧发酵后未经固液分离的沼液进行水热处理获得水热沼液，水热沼液的TS、VS、pH分别为2.2±10％、1.7±10％、8.0±5％，向猪粪中添加水热沼液、水和发酵液并搅拌均匀获得TS为8％～12％的发酵底物，水热沼液在水热沼液与水的总体积里占比为20％～100％，水热沼液与水的总体积和发酵液的体积比为4：1～5：1，发酵液的pH为7.2～7.8，以36±2℃恒温发酵。技术效果在于产气高峰提前出现，提高了产气效率。
Patent WO-2021212789-A1 (WO)
Title: 一种新型锻件氧化皮清洗机
Inventor: ZHANG QIAN
IPC: B08B3/14
Filed: 2020-10-28
Abstract: 公开了一种新型锻件氧化皮清洗机，包括工作架（1）、冲洗作业壳体（2）、连接板（3）和水箱（6），所述工作架（1）由一块顶板和两块立板构成，两块所述立板分别垂直设置在所述顶板底部两侧边并与所述顶板一体成型，所述顶板设有贯穿其的通槽（11），所述顶板固定连接有用于与所述冲洗作业壳体（2）连接的连接板（3），所述连接板（3）的数量为两个且位于所述通槽（11）两侧，所述冲洗作业壳体（2）由一块平板和两块竖板构成。该清洗机设计合理，锻件的表面形成一层氧化皮可以利用水流的冲击方式将氧化皮冲击下来，在装置工作完毕之后，需要对水泵机组或者活动托辊机构进行维修的时候，可以令水泵机组所处的部分与活动托辊所处的部分进行分离，方便维修人员进行维修和维护。
Patent WO-2021088850-A1 (WO)
Inventor: HAN JIREN
IPC: H04W36/00
Filed: 2020-11-04
Abstract: The present application provides a message sending method and apparatus, a message receiving method and apparatus, and a device and a storage medium. The message receiving method comprises: sending a request message to a second network element, the request message being used for instructing the second network element to send a request acknowledgement message; receiving the request acknowledgement message sent by the second network element, the request acknowledgement message carrying grid information of a target cell; and updating the grid information of a first network element according to the grid information of the target cell carried by the request acknowledgement message.
Patent WO-2021088938-A1 (WO)
Inventor: LV BINHUA
IPC: A61K45/06
Filed: 2020-11-05
Abstract: 涉及四氢吡啶并嘧啶类抑制剂及其制备方法和应用。具体地，化合物具有式(I)所示结构，其中各基团和取代基的定义如说明书中所述。还公开了所述化合物的制备方法及其作为KRAS G12C抑制剂的用途。
Patent WO-2022095062-A1 (WO)
Inventor: ZOU TING
IPC: G05D1/10
Filed: 2020-11-09
Abstract: 一种无人机的航线规划方法、装置、无人机、终端设备以及计算机可读存储介质，该方法包括：获取待喷洒的作业区域(S101)；根据作业区域确定第一飞行航线(S102)；确定位于作业区域的边缘的第一作业区域和其余的第二作业区域(S103)；根据第一作业区域确定第二飞行航线(S104)；根据第二作业区域从第一飞行航线中确定喷洒航线段和非喷洒航线段(S105)。该方法提高了喷洒效果。
Patent WO-2022067990-A1 (WO)
Title: Sound producing device
Inventor: SONG WEI
IPC: H04R7/18
Filed: 2020-11-12
Abstract: The present utility model provides a sound producing device, comprising a basket, and a vibration system and a magnetic circuit system respectively fixed to the basket. The magnetic circuit system drives the vibration system to vibrate to produce sound. The vibration system comprises a diaphragm and a voice coil used to drive the diaphragm to vibrate to produce sound. The diaphragm comprises an annular vibration portion, an outer surround bending and extending from an outer periphery of the vibration portion, and an inner surround bending and extending from an inner periphery of the vibration portion. A side of the outer surround located away from the vibration portion is fixed to the basket, and a side of the inner surround located away from the vibration portion is fixed to the magnetic circuit system. The outer surround and the inner surround are both recessed in a vibration direction of the diaphragm and are recessed in the same direction, or, the outer surround and the inner surround are both recessed in a vibration direction of the diaphragm but are recessed in opposite directions. Compared with the related art, the sound producing device of the present utility model has improved acoustic performance.