EP3959038B1 - Embout de tournevis et kit comprenant un outil de serrage et un tel embout - Google Patents

Embout de tournevis et kit comprenant un outil de serrage et un tel embout Download PDF

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Publication number
EP3959038B1
EP3959038B1 EP20721526.0A EP20721526A EP3959038B1 EP 3959038 B1 EP3959038 B1 EP 3959038B1 EP 20721526 A EP20721526 A EP 20721526A EP 3959038 B1 EP3959038 B1 EP 3959038B1
Authority
EP
European Patent Office
Prior art keywords
tool
engage
tip
bit
end portion
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP20721526.0A
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German (de)
English (en)
Other versions
EP3959038A1 (fr
Inventor
Jonas STURESSON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlas Copco Industrial Technique AB
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Atlas Copco Industrial Technique AB
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.)
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Publication date
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Publication of EP3959038A1 publication Critical patent/EP3959038A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/007—Attachments for drilling apparatus for screw or nut setting or loosening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool

Definitions

  • the present invention generally relates to bits for power tools for tightening of screws, more particularly to a screwdriver bit for such a tool having a structure for engaging a tip of a tool.
  • bits i.e. screwdriver bits
  • exchangeable bits may be used.
  • US 2008/072719 A1 discloses a screwdriver bit comprising a body having a first end portion comprising a first engaging structure adapted to engage a fastener head, an opposite second end portion, and an intermediate portion connecting said first end portion and said second end portion, wherein said second end portion comprises a second engaging structure adapted to engage a tip of a tool and wherein said second engaging structure is formed by at least one projecting structure extending in an axial direction.
  • bits are subject to wear in various degrees, and have to be changed at certain intervals in order to provide a proper engagement to the screw and in order not to damage the screw as may be the case if a too worn bit is used. Since the process may be time consuming and, depending on the application, since such changes may need to be performed frequently - possibly after every tightening for very critical joints, this process may in some industries have a very large impact on the total time of assembly. Given the high requirements on efficiency and time reduction for every station along an assembly line, such delays may be a major issue for overall assembly efficiency. Further, depending on the steps required to perform the change of bit, unnecessary complexity may be introduced in the assembly process.
  • the invention proposes a kit according to claims 1 and 4 and a use of a screwdriver bit according to claim 5.
  • a screwdriver bit comprising a body having a first end portion comprising a first engaging structure adapted to engage a fastener head (such as a screw head), an opposite second end portion, and an intermediate portion connecting the first end portion and the second end portion, wherein the second end portion comprises a second engaging structure adapted to engage a tip of a tool and wherein the second engaging structure is formed by at least one projecting structure extending in an axial direction A-A.
  • the screwdriver bit provides a solution to the concerns described above by means of a design incorporating an engaging structure, or upper surface coupling means, arranged on an end of the bit which in use may be described as a rear or upper end and which is therefore commonly accessible when the bit is arranged in a screwdriver.
  • a common design in screwdrivers such as for example electric of pneumatic power screw drivers, is a design comprising a so called set screw (or stop screw) for holding the bit in place in the tool.
  • a through hole is provided at the front end of the tool into which the bit may be "dropped” or placed, thereafter the set screw is inserted in the hole and engages (for example by means of thread) the wall of the through hole to thereby lock the bit in place as the stop screw engages the threads and the set screw abut the rear end of the screw thereby preventing axial movement of the bit relative the tool.
  • set screws commonly comprise a structure at the rear (or upper end) adapted to engage a tip of a screwdriver or similar, such that the stop screw may be secured to the tool by means of rotation. The operator performing the change of the bit therefore commonly needs to have a suitable screw driver nearby.
  • the bit according to the invention cleverly utilizes this already present screwdriver by comprising a structure at it second end which may be adapted to engage this screwdriver. Accordingly, the operator may use the same screwdriver to conveniently put the bit into position by engaging this engaging structure and thereby for example to push the bit into place and/or rotate the bit into a desired rotational position and this operation is then followed by a tightening of the set screw using, again, the same screwdriver.
  • the design of the second engaging structure of the bit may for example be designed to correspond to the design of the engaging structure at the upper, or rear, end of the stop screw such that the operator may even more conveniently utilize the same screw driver for both operations.
  • the design of the bit cleverly solves the problem of excessive time spent on changing of bits as well as reduces the complexity of the change operation as such and also of the work station as a whole, utilizing the screwdriver already needed in order to tighten the set screw.
  • the second engaging structure is adapted to engage a tip of a screwdriver.
  • the referenced tool in which the bit may be arranged is a tightening tool such as a screwdriver, for example a power screwdriver such as a pneumatic an electrical screwdriver, possibly a battery driven tool.
  • a screwdriver for example a power screwdriver such as a pneumatic an electrical screwdriver, possibly a battery driven tool.
  • the screwdriver bit may be suitable for use with a power screwdriver comprising a set screw for holding the bit as described above, where one example include a crowfoot tool, i.e. a tool comprising a crowfoot extension.
  • the second engaging structure is formed by at least one projecting structure extending in an axial direction, more particularly extending from or with respect to said rear portion.
  • the at least one projecting structure may extend in the axial direction from a substantially planar rear surface of the rear portion.
  • Such a surface may be a surface normal to said axial direction.
  • axial should be understood a direction along the screwdriver bit body, i.e. between the first and second end portion of the screwdriver bit.
  • the skilled person off course realizes that such a structure may equally well be described as a recessed structure, i.e. a recess for engaging a tip of a tool, depending on the reference surface.
  • the at least one projecting structure at least partly encloses a recessed portion adapted to receive a tip of a tool.
  • a recess defined by a surrounding projecting structure may be provided in the upper surface of the bit, forming said engaging structure, whereas a fitting protrusion may be provided by the tool tip such that they may be brought in to an engagement so that a torque may be transmitted.
  • the at least one projecting structure forms a hole adapted to receive a tip of a tool.
  • such a hole may have a hexagonal cross section.
  • such a hole may have a double hexagonal cross section. Any other shape is however conceivable within the scope of the present invention.
  • the second engaging structure is formed by, i.e. comprises, at least two projections extending in an axial direction and spaced from one another in a circumferential direction.
  • two or more tongues or pins or the like may be arranged in any suitable pattern at the second end portion of the bit to extend in the axial direction.
  • such a structure may be achieved by means of a slotted structure.
  • the second engaging structure may comprise a hollow axially extending structure, i.e. a protruding structure surrounding a recess, through which a radial slot may be introduced thereby creating two or more section.
  • Such a design may be advantageous both in terms of manufacturability and in that less material may be needed for the bit.
  • the at least two projections form a castellated projecting structure extending in an axial direction, said structure comprising slots spaced from one another in a circumferential direction.
  • castellated should in the context of the present specification be understood a structure comprising a substantially round, i.e. cylindrical, axially projecting structure, i.e. what may be referred to as a base structure, through which one or more radial slots or notches have been introduced forming the at least two axial projections.
  • castellated in this sense refers to the resemblance with the serrated tops of castle parapets, i.e. the crenellated parapet of a medieval castle.
  • the castellated projection structure comprises slots equally spaced from one another in a circumferential direction.
  • the second engaging structure is adapted to engage a tool tip having a hexagonal cross section.
  • the second engaging structure may be a hole having a hexagonal cross section or a slotted, or castellated structure, adapted to engage a hexagonal tip.
  • a hexagonal also known as Allen
  • this cross section is also a common choice for the engaging structure on the rear end of the set screw described above and thus also the shape of the screwdriver used to tighten this screw.
  • the at least one projection has a double hexagonal shape, i.e. a double hexagonal cross section.
  • the second engaging structure is adapted to engage a tip of a tool of a type chosen from a group comprising Torx, Square and Triangle.
  • the second engaging structure may be adapted to engage a tip of a tool of any other common type such as slot, cross (also known as Philips ) or square (also known as Robertsson ).
  • the intermediate portion of the bit comprises a hexagonal cross section.
  • the total length of the screwdriver bit lies in the range 10-50 mm, in some embodiments in the range 15-25 mm. According to one embodiment, the length of the second engaging structure bit lies in the range 2-5 mm.
  • a kit comprising a screwdriver bit according to any of the embodiments described above and a tightening tool comprising a set screw for locking the bit in the tightening tool
  • the set screw comprising a thread for engaging a corresponding thread in a through hole at a front end of the tightening tool to lock the bit and a rear surface comprising engaging means adapted to engage a tool tip of a first type
  • the second engaging structure of the screwdriver bit adapted to engage a tip of a tool is adapted to engage a tool tip of the first type.
  • the rear surface of the locking screw comprising engaging means adapted to engage a tool tip of a first type is adapted to engage a screwdriver tip of a first type, and wherein the second engaging structure of the screwdriver bit adapted to engage a tip of a tool is adapted to engage a screwdriver tip of the first type.
  • a hex- or Allen-screwdriver is a possible choice of type of screwdriver.
  • the front part of the tool is a crowfoot extension.
  • a kit comprising a screwdriver bit according to any of the embodiments described above and a crowfoot extension for a power tool comprising a set screw for locking the bit in the crowfoot extension
  • the set screw comprising a thread for engaging a corresponding thread in a through hole at a front end of the crowfoot to lock the bit and a rear surface comprising engaging means adapted to engage a tool tip of a first type
  • the second engaging structure of the screwdriver bit adapted to engage a tip of a tool is adapted to engage a tool tip of the first type.
  • FIG. 1 An exemplary screwdriver bit 1 is shown in figure 1 , the bit comprising a body having a first end portion 10 comprising a first engaging structure 11 adapted to engage a fastener head such as a screw head, in the illustrated embodiment having a square cross section, an opposite second end portion 20, and an intermediate portion 30 connecting the first end portion 10 and the second end portion 20.
  • the first end portion 10 is the portion of the bit facing away from the tool when arranged in the tool (i.e. the distal part)
  • the second portion 20 is the portion of the bit facing away from the tool when arranged in the tool (i.e. the proximal part).
  • the second end portion 20 comprises a second engaging structure 21 adapted to engage a tip of a tool, in the illustrated embodiment more particularly to engage a tip of a screwdriver.
  • this second engaging structure comprises, or is formed by, three projecting structures 21a-c spaced from one another in a circumferential direction and extending in an axial direction A-A defined between the first and second end portions 10, 20. These projecting structures 21a-c may be described as at least partly enclosing a recessed portion 22 in which the screwdriver tip may be received.
  • the three projections 21a-c in the illustrated embodiment form what may be described as a castellated projecting structure 21a-c extending in the axial direction A-A and comprising slots 23a-c equally spaced from one another in a circumferential direction of the bit 1.
  • the shape of the projections 21a-c is such that a screw driver tip having a hexagonal cross section, i.e. a hex or Allen key, may be exchanged by the projections.
  • the cross section of the respective projection 21a-c therefore comprises an outer arch shaped portion 24 (i.e. corresponding or following the circular circumference of the second end portion 20 of the bit 1, two inclined portions 25a-b and a straight inner portion 26.
  • every other edge of a hex shaped screwdriver tip may abut and engage a straight portion 26 (as the screwdriver is used to position the bit properly).
  • the total length of the screwdriver bit, from the first 10 to the second end portion 20 is approximately 20 mm, whereas the axial length of the projection structure 21a is approximately 2 mm.
  • a hole adapted to receive a tip of a tool could be arranged at the upper, or rear, end of the bit.
  • the screwdriver bit 1 is shown arranged in a front part 200 of a tightening tool, the tool comprising a set screw 110 (or locking screw) for locking the bit 1 to the tool.
  • the bit and hence the set screw are arranged in a so called crow foot 200, i.e. the front part 200 of the tool is a crow foot extension 200.
  • the crowfoot 200 at its front end 210 comprises a through hole 211 having at thread 211a for engaging a thread 111 on the set screw 110 to lock the set screw 110 and hence the screwdriver bit 1 which in use is positioned below the set screw 110 in the tool.
  • the set screw 110 at its rear surface 112 comprises engaging means 112a in the form of a recess, or hole 112a, having a hex-shaped cross section and thus being adapted to engage an Allen, or Hex, screwdriver in order to allow the set screw 110 to be tighten.
  • the screwdriver bit in fig. 3 comprises the same second engaging structure 21a-c as the embodiments illustrated in figures 1 and 2 , i.e. having three projecting structures 21a-c spaced from one another in a circumferential direction and extending in the axial direction, and is hence adapted to engage a hex- or Allen screwdriver tip. More particularly, the engaging structure is adapted to be able to engage a hex- or Allen type screwdriver of the same size as the hex-shaped hole 112a at the upper, or rear, end 112 of the set screw 110.
  • the operator may thus use a hex-screwdriver to unscrew the set screw 110 from the through hole 211 in the crowfoot extension 200, remove the used bit 1 (if necessary by means of engaging the castellated structure 21a-c at the rear end 20 of the bit 1), inserting a new bit 1 in the hole and using the same hex-screwdriver to engage the projecting structures 21a-c to conveniently position the bit 1 in the correct position (including rotation of the bit 1 and axial translation on the bit). Finally the set screw 110 may be tightened, again using the same Hex-screwdriver. Accordingly, the operator may perform the entire operation fast and efficiently using just one tool, this tool being a standard screwdriver, and without the need for any undesirable tough handling of the tool which may cause damage to the bit and/or the tool.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (15)

  1. Kit (100) comprenant un embout de tournevis (1) comprenant un corps ayant
    une première partie d'extrémité (10) comprenant une première structure de mise en prise (11) conçue pour venir en prise avec une tête de fixation,
    une seconde partie d'extrémité opposée (20), et
    une partie intermédiaire (30) reliant ladite première partie d'extrémité et ladite seconde partie d'extrémité,
    dans lequel ladite seconde partie d'extrémité comprend une seconde structure de mise en prise (21) conçue pour venir en prise avec une pointe d'un outil et dans lequel ladite seconde structure de mise en prise est formée par au moins une structure en saillie (21a ; 21b ; 21c) s'étendant dans une direction axiale A-A, et
    un outil de serrage comprenant une vis de pression (110) permettant de verrouiller ledit embout dans ledit outil de serrage, ladite vis de pression comprenant un filetage (111) permettant de venir en prise avec un filetage correspondant (211a) dans un trou traversant (211) au niveau d'une extrémité avant (210) dudit outil de serrage afin de verrouiller ledit embout et une surface arrière (112) comprenant un moyen de mise en prise (112a) conçu pour venir en prise avec une pointe d'outil d'un premier type,
    dans lequel la seconde structure de mise en prise (21) dudit embout de tournevis (1) conçue pour venir en prise avec une pointe d'un outil est conçue pour venir en prise avec une pointe d'outil dudit premier type.
  2. Kit selon la revendication 1, dans lequel ladite surface arrière de ladite vis de pression comprend un moyen de mise en prise conçu pour venir en prise avec une pointe d'outil d'un premier type qui est conçue pour venir en prise avec un embout de tournevis d'un premier type, et dans lequel la seconde structure de mise en prise dudit embout de tournevis conçue pour venir en prise avec une pointe d'un outil est conçue pour venir en prise avec un embout de tournevis dudit premier type.
  3. Kit selon la revendication 1 ou 2, dans lequel ladite extrémité avant (210) dudit outil électrique est une extension en patte d'oie.
  4. Kit comprenant un embout de tournevis comprenant un corps ayant
    une première partie d'extrémité (10) comprenant une première structure de mise en prise (11) conçue pour venir en prise avec une tête de fixation,
    une seconde partie d'extrémité opposée (20), et
    une partie intermédiaire (30) reliant ladite première partie d'extrémité et ladite seconde partie d'extrémité,
    dans lequel ladite seconde partie d'extrémité comprend une seconde structure de mise en prise (21) conçue pour venir en prise avec une pointe d'un outil et dans lequel ladite seconde structure de mise en prise est formée par au moins une structure en saillie (21a ; 21b ; 21c) s'étendant dans une direction axiale A-A, et
    une extension en patte d'oie pour un outil électrique comprenant une vis de pression permettant de verrouiller l'embout dans l'extension en patte d'oie, la vis de pression comprenant un filetage permettant de venir en prise avec un filetage correspondent dans un trou traversant au niveau d'une extrémité avant de la patte d'oie afin de verrouiller l'embout et une surface arrière comprenant un moyen de mise en prise conçu pour venir en prise avec une pointe d'outil d'un premier type,
    dans lequel la seconde structure de mise en prise de l'embout de tournevis conçue pour venir en prise avec une pointe d'un outil est conçue pour venir en prise avec une pointe d'outil du premier type.
  5. Utilisation d'un embout de tournevis dans un outil de serrage, l'embout de tournevis comprenant un corps ayant
    une première partie d'extrémité (10) comprenant une première structure de mise en prise (11) conçue pour venir en prise avec une tête de fixation,
    une seconde partie d'extrémité opposée (20), et
    une partie intermédiaire (30) reliant ladite première partie d'extrémité et ladite seconde partie d'extrémité,
    dans lequel ladite seconde partie d'extrémité comprend une seconde structure de mise en prise (21) conçue pour venir en prise avec une pointe d'un outil et dans lequel ladite seconde structure de mise en prise est formée par au moins une structure en saillie (21a ; 21b ; 21c) s'étendant dans une direction axiale A-A, l'outil de serrage comprenant une vis de pression (110) permettant de verrouiller ledit embout dans ledit outil de serrage, ladite vis de pression comprenant un filetage (111) permettant de venir en prise avec un filetage correspondant (21 1a) dans un trou traversant (211) au niveau d'une extrémité avant (210) dudit outil de serrage afin de verrouiller ledit embout et une surface arrière (112) comprenant un moyen de mise en prise (112a) conçu pour venir en prise avec une pointe d'outil d'un premier type, dans lequel la seconde structure de mise en prise (21) dudit embout de tournevis (1) conçue pour venir en prise avec une pointe d'un outil est conçue pour venir en prise avec une pointe d'outil dudit premier type.
  6. Utilisation selon la revendication 5, dans laquelle ledit outil comprend une extension en patte d'oie.
  7. Kit selon les revendications 1 à 4 ou utilisation selon les revendications 5 à 6, dans lesquels ladite au moins une structure en saillie (21a ; 21b ; 21c) renferme au moins partiellement une partie évidée (22) conçue pour recevoir une pointe d'un outil.
  8. Kit ou utilisation selon la revendication 7, dans lesquels ladite au moins une structure en saillie (21a ; 21b ; 21c) forme un trou conçu pour recevoir une pointe d'un outil.
  9. Kit ou utilisation selon la revendication 7 ou 8, dans lesquels ladite seconde structure de mise en prise comprend au moins deux saillies (21a, 21b) s'étendant dans une direction axiale et espacées l'une de l'autre dans une direction circonférentielle.
  10. Kit ou utilisation selon la revendication 9, dans lesquels lesdites au moins deux saillies forment une structure en saillie crénelée s'étendant dans une direction axiale, ladite structure comprenant des fentes (23a, 23b) espacées l'une de l'autre dans une direction circonférentielle.
  11. Kit ou utilisation selon la revendication 10, dans lesquels ladite structure en saillie crénelée comprend des fentes espacées de manière égale les unes des autres dans une direction circonférentielle.
  12. Kit ou utilisation selon l'une quelconque des revendications précédentes, dans lequel ladite seconde structure de mise en prise est conçue pour venir en prise avec une pointe d'outil ayant une section transversale hexagonale.
  13. Kit ou utilisation selon l'une quelconque des revendications 1 à 11 précédentes, dans lesquels ladite seconde structure de mise en prise est conçue pour venir en prise avec une pointe d'un outil d'un type choisi dans un groupe comprenant Torx, carré et triangle.
  14. Kit ou utilisation selon l'une quelconque des revendications précédentes, dans lesquels la longueur totale de l'embout de tournevis se situe dans la plage de 18 à 50 mm.
  15. Kit ou utilisation selon l'une quelconque des revendications précédentes, dans lesquels ladite seconde structure de mise en prise est conçue pour venir en prise avec une pointe d'un tournevis.
EP20721526.0A 2019-04-26 2020-04-23 Embout de tournevis et kit comprenant un outil de serrage et un tel embout Active EP3959038B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1930137A SE543494C2 (en) 2019-04-26 2019-04-26 SCREWDRIVER BIT AND KIT COMPRISING A TIGHTENING TOOL AND SUCH A BIT.
PCT/EP2020/061287 WO2020216821A1 (fr) 2019-04-26 2020-04-23 Embout de tournevis et kit comprenant un outil de serrage et un tel embout

Publications (2)

Publication Number Publication Date
EP3959038A1 EP3959038A1 (fr) 2022-03-02
EP3959038B1 true EP3959038B1 (fr) 2023-06-07

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Application Number Title Priority Date Filing Date
EP20721526.0A Active EP3959038B1 (fr) 2019-04-26 2020-04-23 Embout de tournevis et kit comprenant un outil de serrage et un tel embout

Country Status (4)

Country Link
EP (1) EP3959038B1 (fr)
CN (1) CN113727811B (fr)
SE (1) SE543494C2 (fr)
WO (1) WO2020216821A1 (fr)

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WO2014095517A1 (fr) * 2012-12-21 2014-06-26 Atlas Copco Industrial Technique Ab Élément de fixation d'outil à moteur

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US7097398B2 (en) * 2003-11-14 2006-08-29 Alltrade Tools Llc Multi-functional bit & connect-disconnect coupling used therewith
US7530771B2 (en) * 2006-09-27 2009-05-12 Burton Kozak Non-ferrous bit for use with a magnetic chuck
US20080072719A1 (en) * 2006-09-27 2008-03-27 Burton Kozak Non-ferrous bit for use with a magnetic chuck
SE532065C2 (sv) * 2008-02-20 2009-10-13 Clas Andersson Med Iteca Fa Verktyg med funktioner som möjliggör montering av olika fästelement utan byte av verktyg
KR101026729B1 (ko) * 2008-10-07 2011-04-08 채수자 다용도 공구
CA2809884C (fr) * 2013-03-20 2014-02-11 Guido Stahl Tete de fixation et guide complementaire
US10549411B2 (en) * 2016-03-01 2020-02-04 Alexander Berman Universal tools
US10022847B2 (en) * 2016-05-10 2018-07-17 Chung-Yu Tsai Magnetic sleeve for positioning screwdriver bit
US9981365B2 (en) * 2016-06-01 2018-05-29 You Lu Enterprise Co., Ltd. Quick-release device for screwdriver bits
CN206066315U (zh) * 2016-07-05 2017-04-05 国网福建省电力有限公司 一种一字型电动工具批头及电动螺丝刀
SE540840C2 (en) * 2017-05-16 2018-11-27 Atlas Copco Ind Technique Ab Power screw driver with screw pick-up feature.
CN207983225U (zh) * 2017-12-25 2018-10-19 郑州小动电子科技有限公司 一种迷你电动螺丝刀
CN208681440U (zh) * 2018-08-09 2019-04-02 Oppo（重庆）智能科技有限公司 电动螺丝刀

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO2014095517A1 (fr) * 2012-12-21 2014-06-26 Atlas Copco Industrial Technique Ab Élément de fixation d'outil à moteur

Also Published As

Publication number Publication date
JP2022530234A (ja) 2022-06-28
WO2020216821A1 (fr) 2020-10-29
EP3959038A1 (fr) 2022-03-02
CN113727811A (zh) 2021-11-30
CN113727811B (zh) 2023-03-14
SE543494C2 (en) 2021-03-09
SE1930137A1 (en) 2020-10-27

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