WO2021029012A1 - Machine de travail portative - Google Patents

Machine de travail portative Download PDF

Info

Publication number
WO2021029012A1
WO2021029012A1 PCT/JP2019/031846 JP2019031846W WO2021029012A1 WO 2021029012 A1 WO2021029012 A1 WO 2021029012A1 JP 2019031846 W JP2019031846 W JP 2019031846W WO 2021029012 A1 WO2021029012 A1 WO 2021029012A1
Authority
WO
WIPO (PCT)
Prior art keywords
main pipe
elastic member
subframe
working machine
brush cutter
Prior art date
Application number
PCT/JP2019/031846
Other languages
English (en)
Japanese (ja)
Inventor
茅原　則明
貴之 佐野
Original Assignee
株式会社ニッカリ
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 株式会社ニッカリ filed Critical 株式会社ニッカリ
Priority to PCT/JP2019/031846 priority Critical patent/WO2021029012A1/fr
Publication of WO2021029012A1 publication Critical patent/WO2021029012A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/90—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for carrying by the operator

Definitions

  • the present invention relates to a handheld working machine.
  • Non-Patent Document 1 describes a brush cutter, which is a kind of handheld working machine.
  • the brush cutter described in Non-Patent Document 1 has an engine, a drive shaft, a gearbox, a cutting blade, a main pipe, a frame, and an operation handle.
  • the engine rotates the drive shaft.
  • the rotation of the drive shaft is transmitted to the gearbox.
  • the rotation of the drive shaft transmitted to the gearbox is decelerated in the gearbox and output in a different direction from the output shaft of the gearbox.
  • the cutting blade is rotationally driven by being fixed to the output shaft of the gearbox.
  • the drive shaft is located inside the main pipe.
  • the vibration during driving of the brush cutter of Non-Patent Document 1 is transmitted to the user through the frame and the operation handle, but the propagation of the vibration is attenuated by the deformation of the rubber member embedded inside the frame. There is.
  • Non-Patent Document 1 when vibration occurs along the extending direction of the main pipe, the rubber member embedded inside the frame is compressed and deformed to attenuate the vibration. become. However, since the amount of deformation of the rubber member due to compression is small, the brush cutter described in Non-Patent Document 1 has room for improvement in the vibration damping ability against vibration along the extending direction of the main pipe.
  • the present invention has been made in view of the above-mentioned problems of the prior art. More specifically, the present invention provides a handheld working machine with improved vibration damping capability.
  • the handheld working machine has a main pipe extending along the first direction and a second pipe extending along the first direction and orthogonal to the first direction. It includes a subframe arranged apart from the main pipe in the direction, and a vibration isolator having an elastic member.
  • the subframe suspends the main pipe via an elastic member.
  • the elastic member is configured to bend and deform due to the relative movement of the main pipe along the first and second directions with respect to the subframe.
  • the elastic member may be a rubber member.
  • the rubber member may be arranged so as to be along a third direction in which the longitudinal direction of the rubber member is orthogonal to the first direction and the second direction.
  • the rubber member may have a first shaft portion and a second shaft portion and a third shaft portion that sandwich the first shaft portion along the third direction.
  • the cross-sectional area of the second shaft portion and the third shaft portion in the cross section orthogonal to the third direction may be smaller than the cross-sectional area of the first shaft portion in the cross section orthogonal to the third direction.
  • the vibration isolator includes a first portion attached to the subframe, a second portion attached to the main pipe and suspended from the first portion by an elastic member, and the like. It may further have a drop-out prevention member that prevents the second portion from falling off from the first portion when the elastic member is torn.
  • the elastic member may be a coil spring.
  • the coil spring may be arranged so as to be along a third direction in which the axial direction of the coil spring is orthogonal to the first direction and the second direction.
  • the elastic member may be located between the main pipe and the subframe in the second direction.
  • the subframe may be configured so that the position with respect to the main pipe in the first direction can be changed.
  • the above handheld work machine may further include a handle attached to the subframe.
  • the handle may be configured to be repositionable with respect to the subframe in the first direction.
  • the vibration damping ability can be improved.
  • brush cutter 10 The brush cutter (hereinafter referred to as "brush cutter 10") according to the first embodiment will be described below.
  • FIG. 1 is a side view of the brush cutter 10.
  • FIG. 2 is a perspective view of the brush cutter 10.
  • the brush cutter 10 includes an engine 1, a drive shaft 2 (not shown in FIGS. 1 and 2, see FIGS. 4 and 5), a centrifugal clutch 3, and a gearbox. It has 4, a main pipe 5, a subframe 6, a vibration isolator 7, a handle 8, and a cutting blade 9.
  • Engine 1 is, for example, a gasoline engine.
  • the drive shaft 2 is attached to the engine 1 via a centrifugal clutch 3.
  • the centrifugal clutch 3 When the rotation speed of the engine 1 is less than a predetermined threshold value, the centrifugal clutch 3 is in the closed state. That is, when the rotation speed of the engine 1 is less than a predetermined threshold value, the power of the engine 1 is not transmitted to the drive shaft 2, and the drive shaft 2 is not rotationally driven.
  • the centrifugal clutch 3 is opened by the centrifugal force accompanying the rotation of the engine 1, and the power of the engine 1 is transmitted to the drive shaft 2 ( The drive shaft 2 will rotate around its central axis).
  • the gearbox 4 slows down the rotation of the drive shaft 2 and transmits it to the output shaft of the gearbox 4.
  • the rotation direction of the output shaft of the gearbox 4 is different from the rotation direction of the drive shaft 2. That is, the gearbox 4 also plays a role of changing the rotation direction of the drive shaft 2.
  • the gearbox 4 is configured by, for example, combining bevel gears.
  • the main pipe 5 is a pipe-shaped (cylindrical) member. That is, the inside of the main pipe 5 is hollow.
  • the main pipe 5 extends along the first direction DR1.
  • the drive shaft 2 is housed inside the main pipe 5. That is, the main pipe 5 is a pipe-shaped member in which the drive shaft 2 rotationally driven by the engine 1 is housed. As long as the main pipe 5 extends along the first direction, the drive shaft 2 also extends along the first direction DR1. Although not shown, the drive shaft 2 is rotatably supported by bearings inside the main pipe 5.
  • the subframe 6 is a rod-shaped member extending along the first direction DR1.
  • the subframe 6 is arranged so as to be separated from the main pipe 5 in the second direction DR2.
  • the second direction DR2 is a direction orthogonal to the first direction DR1. The position of the subframe 6 relative to the main pipe 5 in the first direction DR1 can be changed.
  • the vibration isolator 7 has a structure for suppressing the vibration generated in the brush cutter 10 from being transmitted to the subframe 6 and suspending the main pipe 5 from the subframe 6.
  • the number of anti-vibration portions 7 is, for example, 2, and they are located at both ends of the subframe 6 in the first direction DR1. The detailed configuration of the vibration isolator 7 will be described later.
  • the handle 8 is a part for the user to hold the brush cutter 10.
  • the handle 8 has a grip portion 8a and a grip portion 8b, and the user holds the brush cutter 10 by grasping the grip portion 8a and the grip portion 8b.
  • the handle 8 is attached to the subframe 6 by, for example, a fixing bracket 8c. By loosening the fixing bracket 8c, the position of the handle 8 with respect to the subframe 6 in the first direction DR1 can be changed.
  • the cutting blade 9 is attached to the output shaft of the gearbox 4.
  • the cutting blade 9 is attached to the output shaft of the gearbox 4 by using, for example, a cutting blade mounting bracket. Therefore, by driving the engine 1, the cutting blade 9 is rotationally driven.
  • a shatterproof member 9a is attached in the vicinity of the cutting blade 9. As a result, the object in contact with the rotating cutting blade 9 is suppressed from scattering toward the user.
  • FIG. 3 is an enlarged view of region III of FIG.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG.
  • FIG. 5 is a cross-sectional view taken along the line VV of FIG.
  • the vibration isolator 7 has a first portion 71, a second portion 72, an elastic member 73, and a fall-out prevention member 74.
  • the first portion 71 has a first member 71a, a second member 71b, a third member 71c, and a fourth member 71d.
  • the first member 71a has a first side wall portion 71aa, a second side wall portion 71ab, and an upper wall portion 71ac.
  • the first side wall portion 71aa and the second side wall portion 71ab face each other in the third direction DR3.
  • the third direction DR3 is a direction orthogonal to both the first direction DR1 and the second direction DR2.
  • the upper wall portion 71ac connects the upper end of the first side wall portion 71aa and the upper end of the second side wall portion 71ab. That is, the first member 71a has a U-shape when viewed from the first direction DR1.
  • the second member 71b is fixed to the surface of the first side wall portion 71aa on the side facing the second side wall portion 71ab.
  • the third member 71c is fixed to the surface of the second side wall portion 71ab on the side facing the first side wall portion 71aa.
  • the second member 71b and the third member 71c are arranged to face each other in the third direction DR3.
  • the fourth member 71d is fixed to the upper wall portion 71ac.
  • the insertion hole 71da is defined by the fourth member 71d and the first member 71a (upper wall portion 71ac).
  • the end of the subframe 6 is inserted into the insertion hole 71da.
  • the first portion 71 is attached to the subframe 6.
  • the second portion 72 has a first member 72a, a second member 72b, and a third member 72c.
  • a first insertion hole 72d and a second insertion hole 72e are formed in the second portion 72.
  • the first member 72a has a first surface 72aa and a second surface 72ab.
  • the first surface 72aa is a surface facing the subframe 6 side.
  • the second surface 72ab is the opposite surface of the first surface 72aa in the second direction DR2. That is, the second surface 72ab is a surface facing the main pipe 5 side.
  • a groove 72ac is formed on the first surface 72aa.
  • the first surface 72aa is recessed on the second surface 72ab side in the groove 72ac.
  • the groove 72ac extends along the third direction DR3.
  • a convex portion 72ad is formed on the first surface 72aa located in the groove 72ac.
  • the convex portion 72ad protrudes from the first surface 72aa in the groove 72aa along the second direction DR2.
  • a groove 72ae is formed on the second surface 72ab.
  • the second surface 72ab is recessed on the first surface 72aa side in the groove 72ae.
  • the groove 72ae extends along the first direction DR1.
  • the first member 72a further has a first side surface 72af and a second side surface 72ag (see FIG. 6).
  • the first side surface 72af is the side surface of the first member 72a facing the first side wall portion 71aa side
  • the second side surface 72ag is the side surface of the first member 72a facing the second side wall portion 71ab side.
  • a groove 72ah is formed on the first side surface 72af
  • a groove 72ai is formed on the second side surface 72ag.
  • the groove 72ah and the groove 72ai extend from the first surface 72aa toward the second surface 72ab side.
  • the second member 72b has a curved portion 72ba, a first flat portion 72bb, and a second flat portion 72bc.
  • the first flat portion 72bb is connected to one end of the curved portion 72ba in the first direction DR1
  • the second flat portion 72bb is connected to the other end of the curved portion 72ba in the first direction DR1.
  • the second member 72b is fixed to the first surface 72aa at the first flat portion 72bb and the second flat portion 72bc.
  • the first insertion hole 72d is defined by the curved portion 72ba and the groove 72ac.
  • the first insertion hole 72d extends along the third direction DR3.
  • the upper end of the groove 72ah and the upper end of the groove 72ai are closed by the second member 72b.
  • the third member 72c has a curved portion 72ca, a first flat portion 72cc, and a second flat portion 72cc.
  • the first flat portion 72cc is connected to one end of the curved portion 72ca in the third direction DR3, and the second flat portion 72cc is connected to the other end of the curved portion 72ca in the third direction DR3.
  • the third member 72c is fixed to the second surface 72ab at the first flat portion 72cc and the second flat portion 72cc.
  • the second insertion hole 72e is defined by the curved portion 72ca and the groove 72ae. The second insertion hole 72e extends along the first direction DR1.
  • the main pipe 5 is inserted into the second insertion hole 72e.
  • the main pipe 5 cannot slide with respect to the second insertion hole 72e when the third member 72c is fixed to the second surface 72ab, but loosens the fixing of the third member 72c to the second surface 72ab. This makes it slidable with respect to the second insertion hole 72e. As a result, the position of the subframe 6 with respect to the main pipe 5 in the first direction DR1 can be changed.
  • the elastic member 73 is a rubber member in the brush cutter 10.
  • the rubber member is a member formed of a rubber material.
  • the elastic member 73 is inserted into the first insertion hole 72d.
  • the longitudinal direction of the elastic member 73 is along the third direction DR3. Both ends of the elastic member 73 in the longitudinal direction are fixed to the second member 71b and the third member 71c by adhesion or the like, respectively. As a result, the second portion 72 is suspended from the first portion 71.
  • the elastic member 73 is located between the main pipe 5 and the subframe 6 in the second direction DR2. In a state where the second member 72b is fixed to the first surface 72aa, the elastic member 73 cannot slide with respect to the first insertion hole 72d.
  • the elastic member 73 has a first shaft portion 73a, a second shaft portion 73b, and a third shaft portion 73c along the longitudinal direction thereof (along the third direction DR3).
  • the first shaft portion 73a is sandwiched between the second shaft portion 73b and the third shaft portion 73c in the third direction DR3.
  • a groove 73aa is formed on the outer peripheral surface of the first shaft portion 73a.
  • a convex portion 72ad is inserted into the groove 73aa.
  • the cross-sectional area of the second shaft portion 73b and the third shaft portion 73c in the cross section orthogonal to the third direction DR3 is preferably smaller than the cross-sectional area of the first shaft portion 73a in the cross section orthogonal to the third direction DR3. .. It is preferable that the outer peripheral surface of the first shaft portion 73a is smoothly connected to the outer peripheral surface of the second shaft portion 73b and the outer peripheral surface of the third shaft portion 73c.
  • FIG. 6 is a side view of the vibration isolator portion 7 in which the display of the first portion 71 is omitted.
  • the dropout prevention member 74 is inserted into a through hole formed in the first side wall portion 71aa so that the tip reaches the groove 72ah.
  • the other dropout prevention member 74 is inserted into a through hole formed in the second side wall portion 71ab so that the tip reaches the groove 72ai.
  • the tip of the dropout prevention member 74 is indicated by a dotted line.
  • the main pipe 5 is suspended from the subframe 6 via the elastic member 73, and the longitudinal direction of the elastic member 73 (rubber member) is the third direction DR3 (extending direction of the main pipe 5).
  • the vibration bends and deforms the elastic member 73.
  • the rubber member is more easily deformed when it is subjected to bending deformation than when it is subjected to compression deformation, and the larger the amount of deformation, the greater the damping effect of vibration. Therefore, according to the brush cutter 10, the vibration damping effect against vibration such that the main pipe 5 moves along the first direction DR1 is improved.
  • the vibration damping effect against vibration such that the main pipe 5 moves along the second direction DR2 is also improved.
  • the elastic member 73 When the elastic member 73 is located between the main pipe 5 and the subframe 6 in the second direction DR2, the elastic member 73 is bent and deformed by vibration such that the main pipe 5 moves along the third direction DR3. It will be easier to do. Therefore, in this case, the vibration damping effect on the vibration such that the main pipe 5 moves along the second direction DR2 is also improved.
  • the vibration of the main pipe 5 varies depending on the position in the first direction DR1. Therefore, when the position of the subframe 6 with respect to the main pipe 5 in the first direction DR1 can be changed, the vibration transmitted to the user can be further reduced.
  • the position of the handle 8 with respect to the subframe 6 in the first direction DR1 can be changed, the mounting position of the handle 8 can be changed according to the physique of the user.
  • brush cutter 10A The brush cutter according to the second embodiment (hereinafter referred to as "brush cutter 10A") will be described below.
  • brush cutter 10 the differences from the brush cutter 10 will be mainly described, and the overlapping description will not be repeated.
  • the brush cutter 10A includes an engine 1, a drive shaft 2, a centrifugal clutch 3, a gearbox 4, a main pipe 5, a subframe 6, a vibration isolator 7, a handle 8, and a cutting blade 9. doing.
  • the configuration of the brush cutter 10A is common to the configuration of the brush cutter 10.
  • FIG. 7 is a cross-sectional view of the vibration isolator 7 of the brush cutter 10A in a cross-sectional view orthogonal to the first direction DR1.
  • the vibration isolator 7 has a first portion 71, a second portion 72, and an elastic member 73.
  • the configuration of the vibration isolator 7 of the brush cutter 10A is common to the configuration of the vibration isolation unit 7 of the brush cutter 10.
  • the vibration isolator 7 of the brush cutter 10A is different from the vibration isolator 7 of the brush cutter 10 with respect to the detailed configuration of the first portion 71, the detailed configuration of the second portion 72, and the detailed configuration of the elastic member 73.
  • the first part 71 has a first member 71a and a fourth member 71d, but does not have a second member 71b and a third member 71c.
  • a groove 72ah and a groove 72ai are not formed in the second portion 72 (first member 72a).
  • the elastic member 73 is a coil spring.
  • the coil spring is arranged so that its axial direction is along the third direction DR3. Both ends of the coil spring are fixed to the first side wall portion 71aa and the second side wall portion 71ab by screws or the like, respectively.
  • the second portion 72 is suspended from the first portion 71 by an elastic member 73 (coil spring).
  • the elastic member 73 (coil spring) is bent and deformed by the relative movement of the main pipe 5 with respect to the subframe 6 along the first direction DR1 and the second direction DR2, so that the brush cutter 10A is the same as the brush cutter 10.
  • the vibration damping capacity can be improved.
  • the brush cutter according to the third embodiment (hereinafter referred to as "brush cutter 10B") will be described below.
  • the differences from the brush cutter 10 will be mainly described, and the overlapping description will not be repeated.
  • the brush cutter 10B includes an engine 1, a drive shaft 2, a centrifugal clutch 3, a gearbox 4, a main pipe 5, a subframe 6, a vibration isolator 7, a handle 8, and a cutting blade 9. doing.
  • the configuration of the brush cutter 10B is common to the configuration of the brush cutter 10.
  • FIG. 8 is a cross-sectional view of the vibration isolator 7 of the brush cutter 10B in a cross-sectional view orthogonal to the first direction DR1.
  • the anti-vibration portion 7 has a first portion 71, a second portion 72, an elastic member 73, and a fall-out prevention member 74.
  • the configuration of the vibration isolator 7 of the brush cutter 10B is common to the configuration of the vibration isolation unit 7 of the brush cutter 10.
  • the vibration isolator 7 of the brush cutter 10B is different from the vibration isolator 7 of the brush cutter 10.
  • the second portion 72 has a fourth member 72f and a fifth member 72g in addition to the first member 72a, the second member 72b, and the third member 72c.
  • the fourth member 72f and the fifth member 72g extend along the second direction DR2, respectively, and are sandwiched between the first member 72a and the second member 72b.
  • the convex portion 72ad is not formed on the first member 72a.
  • the number of elastic members 73 is two (the two elastic members 73 are referred to as elastic members 73d and elastic members 73e, respectively).
  • the elastic member 73d and the elastic member 73e are rubber members.
  • the longitudinal direction of the elastic member 73d and the longitudinal direction of the elastic member 73e are along the third direction DR3.
  • One end of the elastic member 73d is fixed to the second member 71b, and the other end of the elastic member 73d is fixed to the fifth member 72g.
  • One end of the elastic member 73e is fixed to the third member 71c, and the other end of the elastic member 73e is fixed to the fourth member 72f.
  • the second portion 72 is suspended from the first portion 71 by the elastic member 73d and the elastic member 73e.
  • the elastic member 73d and the elastic member 73e which are rubber members, are bent and deformed due to the relative movement of the main pipe 5 with respect to the subframe 6 along the first direction DR1 and the second direction DR2. Similar to the brush cutter 10, the vibration damping ability can be improved.
  • the above contents can be applied not only to brush cutters but also to handheld work machines other than brush cutters (for example, handheld work machines that can be used as brush cutters, hedge trimmers, pole saws, etc. by exchanging attachments). ..
  • the above embodiment is particularly advantageous for brush cutters.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

Cette machine de travail portative (10) comprend : un tuyau principal (5) qui s'étend dans une première direction (DR1) ; un sous-cadre (6) qui s'étend dans la première direction et qui est positionné à distance du tuyau principal dans une seconde direction (DR2) orthogonale à la première direction ; et une partie anti-vibration (7) qui a un élément élastique (73). Le tuyau principal est suspendu à partir du sous-cadre avec l'élément élastique entre eux. L'élément élastique est conçu pour subir une déformation par flexion suite à un mouvement relatif du tuyau principal par rapport au sous-cadre dans la première direction et dans la seconde direction.
PCT/JP2019/031846 2019-08-13 2019-08-13 Machine de travail portative WO2021029012A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/031846 WO2021029012A1 (fr) 2019-08-13 2019-08-13 Machine de travail portative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/031846 WO2021029012A1 (fr) 2019-08-13 2019-08-13 Machine de travail portative

Publications (1)

Publication Number Publication Date
WO2021029012A1 true WO2021029012A1 (fr) 2021-02-18

Family

ID=74570949

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/031846 WO2021029012A1 (fr) 2019-08-13 2019-08-13 Machine de travail portative

Country Status (1)

Country Link
WO (1) WO2021029012A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3923759Y1 (fr) * 1961-09-30 1964-08-17
WO2019074424A1 (fr) * 2017-10-12 2019-04-18 Husqvarna Ab Dispositif de coupe de végétation à alimentation électrique
JP2019062880A (ja) * 2017-10-03 2019-04-25 義治 井坂 刈払機の防振装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3923759Y1 (fr) * 1961-09-30 1964-08-17
JP2019062880A (ja) * 2017-10-03 2019-04-25 義治 井坂 刈払機の防振装置
WO2019074424A1 (fr) * 2017-10-12 2019-04-18 Husqvarna Ab Dispositif de coupe de végétation à alimentation électrique

Similar Documents

Publication Publication Date Title
EP2644304B1 (fr) Scie à moteur portative
JP6681226B2 (ja) チェーンソー
US20090038818A1 (en) Auxiliary handle device
CN107676428B (zh) 内燃机的平衡装置
RU2009103228A (ru) Электрическая ручная машина
CN101720632A (zh) 动力工具
US9227290B2 (en) Power-driven hand tool
US3581832A (en) Free-cutting device
US20070056575A1 (en) Hand-Held Power Tool Device
EP2599592B1 (fr) Outils électriques
WO2021029012A1 (fr) Machine de travail portative
US20160207126A1 (en) Counterweight device
EP1530890A1 (fr) Outil portable à manette amortie pour usage jardinier et agricole
JP5265958B2 (ja) 振動吸収継手及びそれを備えた携帯型刈払機
JP6426830B2 (ja) 振動吸収体およびこれを有する作業機
JP5742089B2 (ja) 動力工具
JP2010148484A (ja) エンジン刈払機
JP2010011775A (ja) 振動吸収継手及びそれを備えた携帯型刈払機
JP5740917B2 (ja) 刈払機
JP4338469B2 (ja) 携帯型作業機
EP1971463A1 (fr) Outil électrique avec vibrations atténuées
JP2010004778A (ja) 携帯型作業機
JPH09233928A (ja) 刈払機におけるパイプケースの振動防止装置
JP7185472B2 (ja) 電動工具
JP2019122354A (ja) 刈払機のハンドル防振装置

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: 19941486

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: 19941486

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP