WO2019020108A1 - Outil électrique et adaptateur de foret associé - Google Patents

Outil électrique et adaptateur de foret associé Download PDF

Info

Publication number
WO2019020108A1
WO2019020108A1 PCT/CN2018/097408 CN2018097408W WO2019020108A1 WO 2019020108 A1 WO2019020108 A1 WO 2019020108A1 CN 2018097408 W CN2018097408 W CN 2018097408W WO 2019020108 A1 WO2019020108 A1 WO 2019020108A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill
adapter
drill adapter
receiving
power tool
Prior art date
Application number
PCT/CN2018/097408
Other languages
English (en)
Chinese (zh)
Inventor
郑祥格
李毅
Original Assignee
博世电动工具（中国）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 博世电动工具（中国）有限公司 filed Critical 博世电动工具（中国）有限公司
Priority to BR112020001341-2A priority Critical patent/BR112020001341A2/pt
Priority to DE112018003832.7T priority patent/DE112018003832T5/de
Publication of WO2019020108A1 publication Critical patent/WO2019020108A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/005—Attachments or adapters placed between tool and hammer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/301—Torque transmission means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/321—Use of balls

Definitions

  • the present application relates to power tools, particularly electric hammer drills, and drill adapters therefor.
  • a drill adapter is usually provided to achieve the corresponding function by installing the drill bit through the drill adapter when only the drill mode is required.
  • the drill adapter In order to avoid contact with the hammer drill ram that linearly reciprocates the electric hammer drill, the drill adapter needs to be designed to be separated from the hammer drill ram at all times after insertion of the hammer drill.
  • the drill adapter of the prior art has a structure for preventing the impact hammer from hitting the rod, the structure is relatively simple, and may be invalid after being repeatedly disassembled and used by the site personnel.
  • the present application is directed to an improved drill adapter, whereby the safety of the disassembly operation can be significantly improved, and the drill can be prevented from accidentally falling out of the adapter due to accidental contact during normal operation of the power tool. It can reduce the difficulty of installation relative to power tools.
  • a drill adapter for a power tool comprising:
  • a body having a mounting end for insertion into a power tool and a receiving end for detachably receiving a drill bit, wherein the body is provided to limit insertion of the drill adapter into the power tool First, second and third limit features of the depth, the first, second and third limit features acting in sequence when the drill adapter is located within the power tool, the first limit The bit feature is defined by a flange formed from a periphery of the body, the second stop feature being defined by a keyway formed in an outer circumference of the body that leads axially to an end face of the mounting end, and A third limit feature is defined by a receiving blind hole in the outer circumference of the body adjacent the mounting end and circumferentially spaced from the keyway.
  • the first, second, and third limit features function independently in turn, meaning that when the first limit feature is active, the second and third limit features are inactive; the first limit When the feature fails, the second limit feature works, but the third limit feature does not work; when the first and second limit features fail, only the third limit feature acts.
  • the flange has a locating surface facing the mounting end to define the first stop feature and contact the power tool.
  • the positioning surface is a slope surface or a step surface.
  • the keyway has a locating surface facing the mounting end to define the second stop feature and contact the power tool.
  • the positioning surface is a slope surface or a step surface.
  • the receiving blind hole has a partially spherical recess to define the third limiting feature.
  • an outer diameter of a portion of the body that is located on a side toward the receiving end with respect to the flange is slightly larger than a side of the body that is located toward a side of the mounting end with respect to the flange. Part of the outer diameter.
  • the drill adapter further includes an outer sleeve, the outer sleeve being axially slidably mounted around the body at the receiving end, between the outer sleeve and the receiving end a locking structure for axially limiting a bit received within the receiving end, wherein the locking structure has a structure that is incapable of axially limiting the bit when the outer sleeve moves away from the mounting end .
  • the outer sleeve is non-rotatable relative to the body.
  • the outer wall of the receiving end has a flat section
  • the inner wall of the outer sleeve has a flat section
  • the two flat sections are in contact with each other.
  • the receiving end portion includes a receiving cavity
  • the locking structure includes a ball that can partially protrude into the receiving cavity, the ball is moved when the outer sleeve moves away from the mounting end It is movable radially away from the receiving volume.
  • the receiving end has an axial extension, the outer surface of the axial extension having a shape that can cooperate with other parts.
  • a power tool in accordance with another aspect of the present application, includes a rotatable mounting shaft tube, wherein the aforementioned bit adapter is mounted within the mounting shaft tube.
  • the power tool is an electric hammer drill and further includes a hammer drill ram, the drill adapter installed within the hammer drill always maintaining a safe distance from the hammer drill ram.
  • the multi-level limit feature can ensure that the drill adapter always maintains a safe distance from the hammer drill ram in the electric hammer drill, thereby improving operational safety and reliability.
  • the sealing of the dust cap mounted on the body is improved.
  • the removal of the drill requires the outer casing to be pulled away from the mounting end, the possibility of mis-disassembly of the drill bit due to accidental pressing of the outer casing during construction is avoided.
  • the fact that the outer sleeve cannot rotate relative to the body also improves the ease of installation of the drill adapter.
  • FIG. 1 is a schematic longitudinal cross-sectional view of a drill adapter in accordance with an embodiment of the present application, wherein the drill adapter is equipped with a drill bit;
  • FIG. 2 is a schematic cross-sectional perspective view of the drill adapter shown in Figure 1;
  • Figure 3 is a schematic longitudinal sectional view showing the assembly of the drill adapter shown in Figures 1 and 2 in a hammer drill;
  • FIG. 4 is a longitudinal cross-sectional view schematically showing the assembly of the drill adapter as shown in FIGS. 1 and 2 in a hammer drill, wherein the longitudinal section of FIG. 3 is oriented about the longitudinal center axis with respect to the longitudinal section of FIG. Rotate 90 degrees;
  • Figure 5 shows schematically that a drill bit adapter according to the present application is fitted with another drill bit
  • FIG. 6 schematically shows a perspective view of a drill adapter in accordance with another embodiment of the present application.
  • FIG. 1 schematically shows a longitudinal cross-sectional view of a drill adapter in accordance with one embodiment of the present application.
  • the drill adapter includes a body 100.
  • the body 100 includes a mounting end for mounting in a power tool and a receiving end for receiving a drill bit along a longitudinal direction.
  • Two key grooves 110 that are diametrically opposite to each other are formed in the mounting end for contact with corresponding keys in the power tool to define a longitudinal position of the bit adapter in the power tool and/or to rotate the body 100 by the power tool .
  • the keyway 110 is opened in the body 100 in the longitudinal direction to the exposed end face of the mounting end.
  • Two receiving blind holes 120 which are diametrically opposite to each other, are also formed in the mounting end portion of the body 100, wherein each of the receiving blind holes 120 may be disposed in the circumferential direction of the two key grooves 110 by 90 degrees. After the drill adapter is inserted into the power tool, the receiving blind hole 120 can receive the ball of the power tool, thereby also defining the longitudinal position of the drill adapter in the power tool.
  • a receiving cavity 150 is formed in the receiving end of the body 100 for receiving the drill bit 500.
  • the longitudinal inner wall of the receiving cavity 150 is non-cylindrical so as to be complementary to the outer wall shape of the drill bit 500.
  • the inner wall of the receiving cavity 150 is hexagonal in shape to complement the shape of the hexagonal outer wall of the drill bit 500 such that upon insertion of the drill bit 500 into the receiving cavity 150, the body 100 is relied upon by such complementary shape.
  • the drill bit 500 can be driven to rotate.
  • An outer sleeve 200 is slidably sleeved outside the receiving end of the body 100.
  • a ring of protrusions 210 extends radially inwardly in the inner wall of the outer cover 200.
  • the inner diameter of the ring protrusion 210 is equal to or slightly larger than the outer diameter of the receiving end of the body 100.
  • a ring flange 160 is formed on the body 100 for blocking the outer sleeve 200 from moving further along the axial direction of the body 100 toward the mounting end of the body 100.
  • An inner wall section 220 is also formed in the inner wall of the outer sleeve 200 adjacent to the ring protrusion 210.
  • the inner diameter of the inner wall section 220 is substantially larger than the outer diameter of the receiving end of the body 100 such that when the outer sleeve 200 is mounted around the receiving end of the body 100, a space is defined between the inner wall section 220 and the outer circumference of the body 100. .
  • a coil spring 800 can be installed in this space.
  • a stop ring 300 can also be mounted in this space. One end of the coil spring 800 abuts against the ring protrusion 210 and the other end abuts against the stop ring 300.
  • the retaining ring 400 axially constraining the stop ring 300 is mounted in the annular groove 170 of the body 100.
  • the outer sleeve 200 when the outer sleeve 200 is mounted in position about the body 100, the outer sleeve 200 can be moved away from the mounting end of the body 100 under the application of a pulling force by the operator, and after the tension is released, at the coil spring 800. Under the action, it can be automatically reset.
  • a radial bore 140 (Fig. 2) is formed adjacent the flange 160 in the body 100, for example, two radially opposed radial bores are in communication with the receiving pocket 150.
  • a ball 133 is mounted in the radial bore 140.
  • the radial holes 140 can be formed to be slightly reduced in inner diameter toward the receiving cavity 150, so that the balls 133 located in the radial holes 140 can only partially extend into the receiving Inside the cavity 150. In the state shown in FIG.
  • the protrusion 210 of the outer sleeve 200 can contact the ball 133 to prevent it from being radially withdrawn, so that the ball 133 is partially received in the positioning groove 520 of the drill bit 500, defining the drill bit 500 in the receiving cavity.
  • the ball 133, the coil spring 800 and the stop ring 300 generally form a locking structure between the outer sleeve 200 and the body 100 that is capable of restraining the drill bit 500, and such a locking structure is pulled away from the mounting end of the body 100.
  • the outer sleeve 200 is brought to release.
  • a ring stop flange 130 is formed on the outer circumference of the body 100 of the drill adapter adjacent to the flange 160.
  • the axial distance of the stop flange 130 from the exposed end surface of the mounting end of the body 100 is such that when the body 100 is mounted and fixed in position in the power tool, the exposed end surface of the mounting end of the body 100 is not associated with the power tool Any component is in contact.
  • the outer diameter of the body 100 of the stopper flange 130 near the side of the flange 160 in the axial direction is set to be slightly larger than the outer diameter of the body 100 near the side of the mounting flange on the side of the stopper flange 130.
  • the electric hammer drill includes a mounting shaft tube 610 inside its housing that is rotatable by a motor (not shown) mounted inside the housing of the electric hammer drill.
  • a hammer drill 620 is disposed coaxially with the mounting shaft tube 610 inside the housing of the electric hammer drill, which can be axially reciprocated by the motor.
  • Drive keys 640 extend radially inwardly of the inner wall of the mounting shaft tube 610, such as two drive keys 640 that are diametrically opposed to each other.
  • the positions of the two drive keys 640 are set corresponding to the two keyways 110 on the drill adapter, so that when the drill adapter is inserted into the mounting shaft tube 610, the two keyways 110 can receive two drive keys 640, respectively, so as to
  • the rotary drill adapter that mounts the shaft tube 610 is also driven to rotate.
  • the inner wall of the mounting shaft tube 610 is formed with a ramp that complements the ramp of the stop flange 130 of the bit adapter (as shown in Figure 2) toward the mounting end, thereby After the adapter is inserted into the mounting axle tube 610, the ramp of the stop flange 130 contacts the ramp of the inner wall of the mounting axle tube 610, causing the drill adapter to be spaced a safe distance from the hammer drill 620. Due to the safety distance of the section, even if the operator mistakenly operates to start the hammer drill 620, the hammer drill 620 will never touch the drill adapter installed in place.
  • a slope surface 641 is formed on the outward side of the drive key 640, which is complementary to the shape of the slope surface 111 of the key groove 110 (as shown in FIG. 2) so as to be in contact with the two slope surfaces. It is also possible to ensure that the drill adapter is separated from the hammer drill 620 by a safe distance.
  • a ball 630 capable of projecting toward the inner radial portion of the mounting shaft tube 610 is also mounted.
  • the ball 630 first retracts radially outwardly, and then when the receiving blind hole 120 of the bit adapter reaches the position where the ball 630 is located, the ball 630 projects radially inwardly and receives Within the receiving blind hole 120 to limit the bit adapter, it is ensured that the bit adapter is separated from the hammer drill 620 by a safe distance.
  • the receiving blind hole 120 is formed in a partially spherical manner, which reduces the processing difficulty of receiving the blind hole and also avoids the possibility of axial sway when the ball 630 is restrained.
  • the mounting end of the drill adapter Prior to inserting the drill adapter into the mounting shaft tube 610 of the electric hammer drill, the mounting end of the drill adapter first passes through the central bore of the dust cap 700.
  • the inner diameter of the center hole of the dust cap 700 is set to be slightly smaller than the outer diameter of the body 100 near the side of the mounting end on the side of the stopper flange 130.
  • the dust cap 700 passes over the stop flange 130 until it contacts the flange 160 of the drill adapter.
  • the outer diameter of the body of the stopper flange 130 near the side of the flange 160 is set to be slightly larger than the outer diameter of the body 100 of the stopper flange 130 near the side of the mounting end.
  • the interference fit between the portion of the body 100 in the axial direction of the stop flange 130 near the side of the flange 160 and the center hole of the dust cap 700 in the axial direction of the dust cap 700 further ensures the sealability of the drill adapter. Then, the drill adapter carries the dust cap 700 with its mounting end inserted into the mounting shaft tube 610.
  • the stop flange 130 forms a first limiting structure for axially limiting the drill adapter between the first limiting feature and the mounting shaft tube 610, and the slope 111 of the keyway 110 serves as a second limiting feature and a driving key.
  • a second limit structure for axially limiting the drill adapter is formed between the slopes 641 of the 640, and the ball adapter 630 and the receiving blind hole 120 are used as the third limit feature to form an axial limit on the drill adapter.
  • the third limit structure is used as the third limit structure.
  • the body 100 of the drill adapter is configured such that the first, second, and third limit structures function independently of each other after the bit adapter is inserted into place within the mounting shaft tube 610.
  • the first stop structure functions, i.e., only the ramp of the stop flange 130 contacts the ramp of the mounting shaft tube 610, while the slope of the keyway 110
  • the face 111 is spaced from the ramp 641 of the drive key 640 and the ball 630 is not fully centered in the receiving blind hole 120.
  • the slope 111 of the keyway 110 and/or the slope 641 of the drive key 640 is worn, so that the drill adapter is further moved forward in the mounting shaft 610, the keyway 110 is The slope 111 is in contact with the slope 641 of the drive key 640, that is, the second limit structure is active at this time, but the third limit structure still has no effect. Only when the slope 111 of the keyway 110 and/or the slope 641 of the drive key 640 wears, so that the drill adapter is further moved forward into position within the mounting shaft tube 610, the third limit structure acts, ie, the ball The 630 is completely centered in the receiving blind hole 120.
  • the drill adapter because of the design of the limit features that act sequentially on the drill adapter, the drill adapter does not remain with the hammer drill 620 of the electric hammer drill even if it is repeatedly disassembled under severe working conditions.
  • the safety distance increases the safety and reliability of the drill adapter.
  • the distance between the two axial end faces of the body 100 of the drill adapter shown in Figure 1 can be only 45 millimeters.
  • Fig. 5 schematically shows the same drill adapter as Fig. 1 according to the present application, but with another drill bit 510 installed therein.
  • the receiving cavity 150 of the body 100 of the drill adapter is configured to be capable of receiving drill bits of different sizes.
  • the drill bit 510 has a significantly longer mounting handle than the drill bit 500, the mounting handle of the drill bit 510 can also be inserted into the receiving pocket 150 of the same drill adapter and retained by the balls 133.
  • FIG. 6 schematically shows a perspective view of a drill adapter in accordance with another embodiment of the present application.
  • the drill adapter differs from that shown in Figure 2 in that its receiving end extends further outwardly and the outer surface 105 has a shape such as a square (as shown) or a hexagon so that the drill adapter itself can also be used as A tool to screw the nut.
  • the outer sleeve 200 is designed to be non-rotatable relative to the body 100. For example, this can ensure that the outer sleeve 200 cannot be rotated relative to the body 100 by machining a flat section 100a in the outer wall of the body 100 and forming a flat section 210a in the inner wall of the protrusion 210 such that they are in contact with each other.
  • the operator can conveniently grasp the rotation of the outer sleeve 200 such that the keyway 110 is aligned with the drive key 640.
  • the stop flange 130 is continuously formed on the outer circumference of the body 100.
  • the stop flange 130 may also be formed discontinuously on the outer circumference of the body 100.
  • the first limiting structure is realized by the surface contact between the stop flange 130 and the mounting shaft tube 610, in an alternative embodiment, the first surface can also be implemented by step contact. Limit structure.
  • a flat section 100b is formed in the body 100 adjacent the annular groove 170, for example, it may be coplanar with the flat section 100a to facilitate disassembly and assembly of the retaining ring 400.

Abstract

L'invention concerne un adaptateur de foret et un outil électrique monté avec l'adaptateur de foret. L'adaptateur de foret comprend : un corps (100) comprenant une extrémité de montage destinée à être insérée dans l'outil électrique et une extrémité de réception destinée à recevoir de manière amovible un trépan (500, 510), caractérisé en ce que le corps (100) est doté de premier, deuxième et troisième éléments de limitation qui limitent la profondeur d'insertion de l'adaptateur de foret dans l'outil électrique, les premier, deuxième et troisième éléments de limitation agissant indépendamment à leur tour lorsque l'adaptateur de foret est situé à l'intérieur de l'outil électrique, le premier élément de limitation étant défini par une bride (130) faisant saillie à partir d'une circonférence externe du corps (100), le deuxième élément de limitation étant défini par une rainure de clavette (110) formée dans une circonférence externe du corps (100) dans une direction axiale jusqu'à une surface d'extrémité de l'extrémité de montage et le troisième élément de limitation étant défini par un trou borgne de réception (120) qui est adjacent à l'extrémité de montage dans la circonférence externe du corps (100) et est espacé de manière circonférentielle de la rainure de clavette (110).
PCT/CN2018/097408 2017-07-28 2018-07-27 Outil électrique et adaptateur de foret associé WO2019020108A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112020001341-2A BR112020001341A2 (pt) 2017-07-28 2018-07-27 ferramenta elétrica e adaptador de broca da mesma
DE112018003832.7T DE112018003832T5 (de) 2017-07-28 2018-07-27 Elektrowerkzeug und bohradapter dafür

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720928170.5U CN207757558U (zh) 2017-07-28 2017-07-28 电动工具及其钻头适配器
CN201720928170.5 2017-07-28

Publications (1)

Publication Number Publication Date
WO2019020108A1 true WO2019020108A1 (fr) 2019-01-31

Family

ID=63179470

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/097408 WO2019020108A1 (fr) 2017-07-28 2018-07-27 Outil électrique et adaptateur de foret associé

Country Status (4)

Country Link
CN (1) CN207757558U (fr)
BR (1) BR112020001341A2 (fr)
DE (1) DE112018003832T5 (fr)
WO (1) WO2019020108A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113276071B (zh) * 2021-05-09 2023-09-12 江苏东成工具科技有限公司 二合一手持工具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050285355A1 (en) * 2004-06-24 2005-12-29 Yuan-Ho Lin Quick removable chuck assembly and its cutting tool
CN1765589A (zh) * 2003-06-27 2006-05-03 密尔沃基电动工具公司 电动工具、转接头及其操作方法
CN2915329Y (zh) * 2006-01-02 2007-06-27 蔡昌权 转换器
CN201816040U (zh) * 2010-08-16 2011-05-04 林昌方 可用于五坑或长六角电锤连接转换的装置
CN203853971U (zh) * 2014-05-15 2014-10-01 游明司 一种电锤及电钻用的接杆

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1765589A (zh) * 2003-06-27 2006-05-03 密尔沃基电动工具公司 电动工具、转接头及其操作方法
US20050285355A1 (en) * 2004-06-24 2005-12-29 Yuan-Ho Lin Quick removable chuck assembly and its cutting tool
CN2915329Y (zh) * 2006-01-02 2007-06-27 蔡昌权 转换器
CN201816040U (zh) * 2010-08-16 2011-05-04 林昌方 可用于五坑或长六角电锤连接转换的装置
CN203853971U (zh) * 2014-05-15 2014-10-01 游明司 一种电锤及电钻用的接杆

Also Published As

Publication number Publication date
DE112018003832T5 (de) 2020-04-09
BR112020001341A2 (pt) 2020-08-11
CN207757558U (zh) 2018-08-24

Similar Documents

Publication Publication Date Title
US4946179A (en) Self-gradually locking chuck
US7374377B2 (en) Bit holding apparatus for use with a power tool
US5013194A (en) Chuck assembly for tool bits
US6966562B1 (en) Multiple mode chuck
EP1193014B1 (fr) Mandrin pour scie à trous et forêt
USRE31755E (en) Tool and chuck for hammer drill
US3726533A (en) Spring biased coupling for tool and chuck
US5470180A (en) Reversible drill/driver tool
US4527809A (en) Quick action keyless drill chuck
US6176654B1 (en) Reversible drill/driver tool
US4900202A (en) Chuck assembly for tool bits
JP3924365B2 (ja) 吸塵用アダプター
US11285589B2 (en) Socket
US4834596A (en) Quick change spindle adaptor for tool holder
JP3183660U (ja) マシニングセンタの非回転工具を取り付ける工具ホルダ
EP1733850A1 (fr) Amortisseur pour l'ensemble porte-outil d'un outil avec mouvement de va-et-vient
US6988734B2 (en) Rotating machine, approximately in the form of a hand drill, a percussion drill, a drill hammer or a battery screwdriver
EP3456449B1 (fr) Mandrin porte-foret à serrage automatique et à engrenages
WO2019020108A1 (fr) Outil électrique et adaptateur de foret associé
CN102729225B (zh) 一种快夹机构
US4213622A (en) Lockable chuck for hammer drill
US4702485A (en) Percussion drill and chuck arrangement therefor
US3462164A (en) Snap ring drill chuck assembly
EP1025940B1 (fr) Mandrin de serrage manuel
JP4750315B2 (ja) スクリュードライバ装置

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: 18837967

Country of ref document: EP

Kind code of ref document: A1

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112020001341

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112020001341

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20200122

122 Ep: pct application non-entry in european phase

Ref document number: 18837967

Country of ref document: EP

Kind code of ref document: A1