WO2020119239A1 - 扬声器 - Google Patents

扬声器 Download PDF

Info

Publication number
WO2020119239A1
WO2020119239A1 PCT/CN2019/111093 CN2019111093W WO2020119239A1 WO 2020119239 A1 WO2020119239 A1 WO 2020119239A1 CN 2019111093 W CN2019111093 W CN 2019111093W WO 2020119239 A1 WO2020119239 A1 WO 2020119239A1
Authority
WO
WIPO (PCT)
Prior art keywords
dome
loudspeaker
ring
diaphragm
folding ring
Prior art date
Application number
PCT/CN2019/111093
Other languages
English (en)
French (fr)
Inventor
章统
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020119239A1 publication Critical patent/WO2020119239A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/127—Non-planar diaphragms or cones dome-shaped
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the utility model relates to the field of electroacoustics, in particular to a speaker.
  • electro-acoustic devices As a component in the electronic field, electro-acoustic devices, with the development of the electronics industry, electro-acoustic systems need to continuously meet the higher requirements of consumers on product performance, and need to more perfectly present the essence of sound.
  • the diaphragm directly affects the acoustic performance of the speaker.
  • the diaphragm usually includes a dome in the center and a folding ring around the dome.
  • the vibration of the diaphragm is dominated by the vibration of the dome.
  • the amplitude of the dome is larger than that of the folded ring, and the frequency is high. It is an important part of the acoustic effect of the sound-emitting device.
  • the ideal state is that the dome can be up and down at all positions when vibrating. It is a complete rigid body without dividing the vibration.
  • the dome in the prior art is a flat plate structure of equal thickness.
  • the dome may be There is distortion and distortion, and it is impossible to obtain good acoustic performance, especially when the size of the speaker is large, the voice coil is difficult to support the dome well, and the dome will produce split vibration due to insufficient strength, which affects the height of the product. Frequency sensitivity and speaker sound quality.
  • the present invention provides a loudspeaker including a basin frame, a diaphragm fixed to the basin frame, and a voice coil located under the diaphragm and used to drive the diaphragm to vibrate and sound, wherein the vibration
  • the film includes a dome in the central area and a fold ring surrounding the dome, the dome includes a flat plate-shaped boss portion in the central area and a peripheral portion provided around the boss portion.
  • the boss portion protrudes from the peripheral portion away from the voice coil.
  • the boss portion protrudes from the peripheral portion toward the voice coil.
  • the convex portion has the same convex direction as the folding ring.
  • the protrusions of the boss and the fold ring are not in the same direction.
  • the boss portion is square, rounded rectangle, or ellipse.
  • the folding ring is a ring-shaped hollow structure.
  • the dome is coupled to the hollow portion of the folded ring.
  • the dome and the folding ring are in a split structure.
  • the folding ring includes a connecting portion near the dome, and the connecting portion is fixedly connected to the peripheral portion.
  • the dome and the folding ring are integrally formed.
  • the speaker of the utility model is provided with a convex part through the central area of the dome, and has a concave structure.
  • the dome strengthens the dome, suppresses the split vibration at high frequency, improves the high-frequency performance of the product, and improves the sense of hearing. Improve the acoustic performance of the product, effectively improve the product reliability.
  • FIG. 1 is an exploded schematic view of the stereo structure of the speaker of the present invention
  • FIG. 2 is a schematic cross-sectional structure diagram of a speaker of the present invention.
  • FIG. 3 is a schematic view of the three-dimensional structure of the dome in the speaker of the present invention.
  • the horizontal direction of the drawing paper is the horizontal direction
  • the vertical direction of the drawing paper is the vertical direction.
  • the purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the content of the present invention, rather than to limit the present invention.
  • the utility model improves the structure of the dome.
  • the specific scheme is as follows.
  • the present invention provides a loudspeaker with a new structure dome.
  • the loudspeaker includes a basin frame 11, a diaphragm 13 fixed to the basin frame 11, and is located under the diaphragm 13 for driving
  • the diaphragm 13 vibrates and sounds the voice coil 15 and the magnetic circuit system 12 located below the diaphragm 13 and fixed to the basin frame 11, wherein the diaphragm 13 includes a dome 131 located in the central area and a folded ring surrounding the dome 131 133.
  • the dome 131 includes a boss portion 135 located in the central region and a peripheral portion 137 provided around the boss portion 135. As shown in FIGS. 2 and 3, the boss portion 135 is upward from the peripheral portion 137 (ie Projecting away from the voice coil 15). Further, the boss portion 135 and the peripheral portion 137 are connected by a smooth transition surface or an inclined surface, and can also be connected by a right angle connection, but it is not limited to this. In other embodiments, the convex The stage 135 protrudes downward (towards the voice coil 15). Therefore, the dome 131 has a concave-convex structure, which can enhance the strength of the dome 131, effectively suppress the division vibration at high frequency, and improve the high-frequency performance of the product.
  • the diaphragm 13 is rectangular
  • the folding ring 133 is a ring-shaped hollow structure
  • the dome 131 is coupled to the hollow portion of the folding ring 133
  • the dome 131 and the folding ring 133 are split structures
  • the folding ring 133 includes
  • the connecting portion 136 near the dome 131 is fixedly connected to the peripheral portion 137, see FIG. 1 for details.
  • the folding ring 133 and the dome 131 may also be an integrally formed integral structure.
  • the dome 131 has a rounded rectangle
  • the folding ring 133 has a ring shape
  • the dome 131 can also have an elliptical shape, a polygonal shape, or other shapes
  • the boss portion 135 has a rounded rectangle shape, and can also have a square shape, an oval shape, or other shapes. shape.
  • the protruding direction of the protruding portion 135 is different from the protruding direction of the folding ring 133, but it is not limited thereto, and the protruding direction of the folding ring 133 is the same as the protruding direction of the protruding portion 135.
  • the speaker of the present invention is provided with a boss portion through the central area of the dome, and has a concave structure.
  • the dome enhances the strength of the dome, suppresses split vibration at high frequencies, and improves the high frequency of the product Performance, improve the sense of hearing, improve the acoustic performance of the product, and effectively improve the reliability of the product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本实用新型提供一种扬声器，所述扬声器包括盆架、固定于盆架的振膜、位于振膜下方且用于驱动振膜振动发声的音圈，其中，所述振膜包括包括球顶和自该球顶弯折延伸的折环，所述球顶包括位于中央区域的凸台部及围绕该凸台部设置的周边部。本实用新型的扬声器通过球顶的中央区域设置凸台部，具有凹部结构球顶增强了球顶的强度，抑制了高频时的分割振动，提升了产品的高频性能，提升了听感，提高了产品的声学性能，有效改善了产品使用可靠性。

Description

扬声器 技术领域
本实用新型涉及电声领域，特别地涉及扬声器。
 背景技术
电声器件作为电子领域中的一个部件，随着电子行业的发展，电声系统需要不断的满足消费者对产品性能提出的更高要求，需要更完美的呈现出声音的本质。
 技术问题
振膜作为扬声器的核心发声部件，其设计的好坏直接影响着扬声器的声学性能，振膜通常包括位于中央位置的球顶和围绕球顶的折环。振膜的振动以球顶的振动为主，球顶的振幅相对折环的振动幅度大、频率高，是体现发声器件声学效果的重要组成部分。理想的状态是球顶在振动时所有位置能直上直下，是一个完整的刚体，没有分割振动，但是现有技术中的球顶为等厚度的平板结构，在高频振动时，球顶可能会存在扭曲变形，无法获得较好的声学性能，尤其是当扬声器尺寸较大时，音圈难以对球顶起到很好的支撑作用，球顶会因强度不足产生分割震动，从而影响产品的高频灵敏度及扬声器的音质。
因此，有必要提供一种改进了球顶结构的新的扬声器。
 技术解决方案
为了解决上述问题，本实用新型提供了一种扬声器，所述扬声器包括盆架、固定于盆架的振膜、位于振膜下方且用于驱动振膜振动发声的音圈，其中，所述振膜包括包括位于中央区域的球顶和围绕所述球顶的折环，所述球顶包括位于中央区域的平板状凸台部及围绕该凸台部设置的周边部。
作为一种改进，所述凸台部自所述周边部向远离所述音圈方向凸起。
作为一种改进，所述凸台部自所述周边部向靠近所述音圈方向凸起。
作为一种改进，所述凸台部与所述折环的凸起方向相同。
作为一种改进，所述凸台部与所述折环的凸起方向不相同。
作为一种改进，所述凸台部为方形、圆角矩形或者椭圆形。
作为一种改进，所述折环为环形的中空结构。
作为一种改进，所述球顶结合在折环的中空部分上。
作为一种改进，所述球顶与所述折环为分体式结构，所述折环包括靠近所述球顶的连接部，所述连接部与所述周边部固定连接。
作为一种改进，所述球顶与所述折环一体成型。
 有益效果
实用新型的有益效果是：
本实用新型的扬声器通过球顶的中央区域设置凸台部，具有凹部结构球顶增强了球顶的强度，抑制了高频时的分割振动，提升了产品的高频性能，提升了听感，提高了产品的声学性能，有效改善了产品使用可靠性。
 附图说明
图1为本实用新型的扬声器的立体结构分解示意图；
图2为本实用新型的扬声器的剖面结构示意图；
图3为本实用新型的扬声器中的球顶的立体结构示意图。
 本发明的实施方式
下面通过具体实施方式结合附图对本实用新型作进一步详细说明，以便能够更好地理解本实用新型的方案以及其各方面的优点。在以下的实施例中，以附图纸面的左右方向为水平方向，以附图纸面的上下方向为竖直方向。另外，提供以下具体实施方式的目的是便于对本实用新型的内容更清楚透彻的理解，而不是对本实用新型的限制。
为了解决因球顶会因为强度不足产生分割震动的问题，本实用新型对球顶的结构进行了改进，具体方案如下。
如图1和图2所示，本实用新型提供了一种具有新结构球顶的扬声器，该扬声器包括盆架11、固定于盆架11的振膜13、位于振膜13下方且用于驱动该振膜13振动发声的音圈15、以及位于振膜13下方且固定于盆架11的磁路系统12，其中，振膜13包括位于中央区域的球顶131及围绕球顶131的折环133。
在本实施方式中，球顶131包括位于中央区域的凸台部135及围绕凸台部135设置的周边部137，如图2和图3所示，凸台部135自周边部137向上（即向远离音圈15方向）凸出，进一步地，凸台部135与周边部137通过圆滑过渡面或斜面连接，还可以通过直角连接的方式相连，但不限于此，在其它实施方式中，凸台部135向下（向靠近音圈15方向）凸出。由此，球顶131具有凹凸结构，可以增强球顶131的强度，有效抑制了高频时的分割振动，提升了产品的高频性能。
在本实施方式中，振膜13为矩形，折环133为环形的中空结构，球顶131结合在折环133的中空部分上，球顶131与折环133为分体式结构，折环133包括靠近球顶131的连接部136，该连接部136与周边部137固定连接，具体参见图1。需要说明的是，折环133与球顶131还可以是一体成型的一体结构。进一步地，球顶131呈圆角矩形，折环133呈环状，球顶131还可以为椭圆形、多边形等其它形状；凸台部135为圆角矩形，还可以为方形、椭圆形或者其它形状。
另外，凸出部135的凸出方向与折环133的凸出方向不相同，但是不限于此，折环133的凸出方向与凸出部135的凸出方向相同。
与现有技术相比，本实用新型的扬声器通过球顶的中央区域设置凸台部，具有凹部结构球顶增强了球顶的强度，抑制了高频时的分割振动，提升了产品的高频性能，提升了听感，提高了产品的声学性能，有效改善了产品使用可靠性。
在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，可以做出各种更改和变化，但这些均属于实用新型的保护范围。

Claims (10)

  1. 一种扬声器，其特征在于，所述扬声器包括盆架、固定于盆架的振膜、位于振膜下方且用于驱动振膜振动发声的音圈，其中，所述振膜包括包括位于中央区域的球顶和围绕所述球顶的折环，所述球顶包括位于中央区域的平板状凸台部及围绕该凸台部设置的周边部。
  2. 根据权利要求1所述的扬声器，其特征在于，所述凸台部自所述周边部向远离所述音圈方向凸起。
  3. 根据权利要求1所述的扬声器，其特征在于，所述凸台部自所述周边部向靠近所述音圈方向凸起。
  4. 根据权利要求2或3所述的扬声器，其特征在于，所述凸台部与所述折环的凸起方向相同。
  5. 根据权利要求2或3所述的扬声器，其特征在于，所述凸台部与所述折环的凸起方向不相同。
  6. 根据权利要求2或3所述的扬声器，其特征在于，所述凸台部为方形、圆角矩形或者椭圆形。
  7. 根据权利要求1所述的扬声器，其特征在于，所述折环为环形的中空结构。
  8. 根据权利要求7所述的扬声器，其特征在于，所述球顶结合在折环的中空部分上。
  9. 根据权利要求1所述的扬声器，其特征在于，所述球顶与所述折环为分体式结构，所述折环包括靠近所述球顶的连接部，所述连接部与所述周边部固定连接。
  10. 根据权利要求1所述的扬声器，其特征在于，所述球顶与所述折环一体成型。
PCT/CN2019/111093 2018-12-12 2019-10-14 扬声器 WO2020119239A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201822091381.5 2018-12-12
CN201822091381.5U CN209201336U (zh) 2018-12-12 2018-12-12 一种扬声器

Publications (1)

Publication Number Publication Date
WO2020119239A1 true WO2020119239A1 (zh) 2020-06-18

Family

ID=67429024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/111093 WO2020119239A1 (zh) 2018-12-12 2019-10-14 扬声器

Country Status (3)

Country Link
US (1) US20200196062A1 (zh)
CN (1) CN209201336U (zh)
WO (1) WO2020119239A1 (zh)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209201336U (zh) * 2018-12-12 2019-08-02 瑞声科技(新加坡)有限公司 一种扬声器
WO2021114277A1 (zh) * 2019-12-13 2021-06-17 瑞声声学科技(深圳)有限公司 发声器件
CN212812013U (zh) * 2020-06-30 2021-03-26 瑞声科技(新加坡)有限公司 发声器件
CN212812011U (zh) * 2020-06-30 2021-03-26 瑞声科技(新加坡)有限公司 发声器件
WO2024088223A1 (zh) 2022-10-28 2024-05-02 深圳市韶音科技有限公司 一种耳机
CN220254651U (zh) 2022-10-28 2023-12-26 深圳市韶音科技有限公司 一种开放式耳机
US11895454B1 (en) 2022-10-28 2024-02-06 Shenzhen Shokz Co., Ltd. Earphones
CN118266233A (zh) 2022-10-28 2024-06-28 深圳市韶音科技有限公司 一种耳机
WO2024087495A1 (zh) 2022-10-28 2024-05-02 深圳市韶音科技有限公司 一种耳机
US11871171B1 (en) 2022-10-28 2024-01-09 Shenzhen Shokz Co., Ltd. Open earphones
US11902733B1 (en) 2022-10-28 2024-02-13 Shenzhen Shokz Co., Ltd. Earphones
CN220368782U (zh) 2022-10-28 2024-01-19 深圳市韶音科技有限公司 一种耳机
US11877111B1 (en) 2022-10-28 2024-01-16 Shenzhen Shokz Co., Ltd. Earphones
CN118266232A (zh) 2022-10-28 2024-06-28 深圳市韶音科技有限公司 一种耳机
US11902734B1 (en) 2022-10-28 2024-02-13 Shenzhen Shokz Co., Ltd. Open earphones
CN117956364A (zh) 2022-10-28 2024-04-30 深圳市韶音科技有限公司 一种耳机
WO2024087907A1 (zh) 2022-10-28 2024-05-02 深圳市韶音科技有限公司 一种耳机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009147414A (ja) * 2007-12-11 2009-07-02 Pioneer Electronic Corp スピーカ装置
CN203492192U (zh) * 2013-07-15 2014-03-19 富祐鸿科技股份有限公司 薄型喇叭结构
CN104301845A (zh) * 2013-07-15 2015-01-21 富祐鸿科技股份有限公司 薄型喇叭结构
CN104540078A (zh) * 2014-12-16 2015-04-22 歌尔声学股份有限公司 微型扬声器
CN204733375U (zh) * 2015-06-29 2015-10-28 歌尔声学股份有限公司 扬声器
CN209201336U (zh) * 2018-12-12 2019-08-02 瑞声科技(新加坡)有限公司 一种扬声器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009147414A (ja) * 2007-12-11 2009-07-02 Pioneer Electronic Corp スピーカ装置
CN203492192U (zh) * 2013-07-15 2014-03-19 富祐鸿科技股份有限公司 薄型喇叭结构
CN104301845A (zh) * 2013-07-15 2015-01-21 富祐鸿科技股份有限公司 薄型喇叭结构
CN104540078A (zh) * 2014-12-16 2015-04-22 歌尔声学股份有限公司 微型扬声器
CN204733375U (zh) * 2015-06-29 2015-10-28 歌尔声学股份有限公司 扬声器
CN209201336U (zh) * 2018-12-12 2019-08-02 瑞声科技(新加坡)有限公司 一种扬声器

Also Published As

Publication number Publication date
US20200196062A1 (en) 2020-06-18
CN209201336U (zh) 2019-08-02

Similar Documents

Publication Publication Date Title
WO2020119239A1 (zh) 扬声器
WO2020125171A1 (zh) 一种扬声器
WO2022007174A1 (zh) 发声器件
WO2020140544A1 (zh) 发声器件
CN107249163A (zh) 一种发声装置
CN208353599U (zh) 振膜及扬声器
WO2020125169A1 (zh) 发声器件
WO2020134309A1 (zh) 一种扬声器
WO2024000693A1 (zh) 同轴扬声器
WO2024000686A1 (zh) 同轴扬声器
WO2020029640A1 (zh) 扬声器
CN208353598U (zh) 振膜及扬声器
WO2024044922A1 (zh) 同轴扬声器
WO2024044923A1 (zh) 同轴扬声器
WO2022000780A1 (zh) 发声器件
WO2020125170A1 (zh) 一种扬声器
KR101564216B1 (ko) 보이스코일 및 이를 사용한 스피커
CN208353572U (zh) 振膜及扬声器
WO2022067986A1 (zh) 发声器件
WO2021035870A1 (zh) 发声装置及电子设备
WO2022007170A1 (zh) 发声器件
WO2018103190A1 (zh) 锥盆式的扬声器膜片和扬声器
TWI819514B (zh) 高音增強型被動幅射器及被動幅射器音箱
CN218570453U (zh) 同轴扬声器
WO2022000654A1 (zh) 发声器件

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19895825

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19895825

Country of ref document: EP

Kind code of ref document: A1