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EP0279899B2 - Outil à visser - Google Patents
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EP0279899B2 - Outil à visser - Google Patents

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Publication number
EP0279899B2
EP0279899B2 EP87113367A EP87113367A EP0279899B2 EP 0279899 B2 EP0279899 B2 EP 0279899B2 EP 87113367 A EP87113367 A EP 87113367A EP 87113367 A EP87113367 A EP 87113367A EP 0279899 B2 EP0279899 B2 EP 0279899B2
Authority
EP
European Patent Office
Prior art keywords
clamping
screwing tool
tool according
latching
core 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.)
Expired - Lifetime
Application number
EP87113367A
Other languages
German (de)
English (en)
Other versions
EP0279899B1 (fr
EP0279899A1 (fr
Inventor
Karl Lieser
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6321526&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0279899(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE3705663A external-priority patent/DE3705663C3/de
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Priority to AT87113367T priority Critical patent/ATE70211T1/de
Publication of EP0279899A1 publication Critical patent/EP0279899A1/fr
Application granted granted Critical
Publication of EP0279899B1 publication Critical patent/EP0279899B1/fr
Publication of EP0279899B2 publication Critical patent/EP0279899B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25B15/02—Screwdrivers operated by rotating the handle
    • B25B15/04—Screwdrivers operated by rotating the handle with ratchet action
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis

Definitions

  • the invention relates to a screwing tool with a reversible locking mechanism
  • Such a screwing tool is known from DE-A-25 03 312.
  • Another screwing tool is known from DE-A-33 44 361, which in cross section triangular shaped output core part in Connection with the outer drive ring part wedge-shaped terminal spaces for receiving roller-shaped sprags arranged in pairs forms between a pair of sprags extends a striking this Compression spring that wedges the sprags running terminal spaces presses.
  • Relocation the clamp body to achieve different Driving directions happens by means of of the centrally located switching element, of which run out angled drivers. There are three such carriers are provided, each one extend between a pair of the clamp body.
  • the triangle corners are concentric to the pivot point cut off so that the drivers there in the can drive adjacent terminal rooms, and depending on the direction in which the take of the driven core part is desired.
  • Positioning the switching element in its switching positions serves a housed in the output core part, locking ball interacting with the switching element.
  • FR-A 2 196 221 is a screwing tool with a polygonal, e.g. B. square Output core part known, the clamping body in Slots of a holder basket are held, the according to the desired direction of rotation is adjusted.
  • the object of the invention is the object based on a screwdriver in question simplify the standing type in its structure and to design so that in order to achieve optimal Working conditions the friction is minimized.
  • the sprags are made exclusively by the rotational movement of the drive ring part in their Clamped position dragged along. Will take away in one direction and a freewheel in the other Direction desired, so the switching element is in the corresponding position to rotate, the driver access to one clamping gusset each block the terminal area.
  • the driver access to one clamping gusset each block the terminal area.
  • a rotation of the Drive ring part in the freewheel direction then leads to a rolling out of the clamping body from this Pinch gussets.
  • this brings loose storage of the sprags reduces friction of approx. 20% compared to conventional ones Designs so that premature signs of fatigue when working with the Screwing tool is counteracted.
  • the latter is particularly important if the screwdriver is designed as a screwdriver.
  • Each according to the direction of rotation of the switching element Insert the locking ball into the corresponding locking recess and is due to the compression spring acting on them brought into the centering position. In this way the switching element can travel a greater distance.
  • This configuration also allows that when moving the drive ring part in the freewheel direction still a slight evasive movement of the Driver can be reached without the switching element steps out of its switching position.
  • the triangle sides to form the output core part spherical leads to a continuous control of the sprags into the respective terminal gusset of the terminal rooms. In this way, overload protection is achieved resulting in an extension of shelf life of the screwing tool.
  • This inner body is part of the drive ring part, resulting in further savings leads from components. Otherwise the ribs are on provided the end regions of the guide sleeve. so that even high canting forces are counteracted becomes.
  • the screwdriver designed as a screwdriver according to that in FIGS. 1-5 shown embodiment has a Screwdriver handle 1, which has an axial arranged inner body 2 is equipped. The latter sits rotatably in the screwdriver handle 1 and forms a larger cross-section at its lower end Drive ring part 3, see Fig. 1st From the free end of the drive ring part 3 are three stepped bore sections 4, 5 and 6 incorporated such that the bore sections 4, 5 are at the level of the drive ring part 3. The smaller cross-section extending in the inner body 2 Bore section 6 rotates one equipped with circumferential bearing ribs 7 ', 7' ' Bearing sleeve 7, which is the same material from within the drive ring part 3 arranged output core part 8 goes out.
  • the output core part with a triangular cross section 8 has spherically shaped triangular sides 9. Their degree of curvature is less than that the wall of the bore section 5.
  • the output core part 8 forms transverse to the bisector standing, concentric to the bore section 5 running guide surfaces 9 ' which connect the triangular sides 9 to one another.
  • the spherical triangular sides 9 are produced through polygonal turns, which results in the floor of the bore section 5 supporting projections 10 are formed. Their outer edges 10 ' and the guide surfaces 9 'complement one another Circle, compare in particular FIGS. 2 and 4.
  • the output core part 8 in one stepped shoulder collar 11 continues.
  • a stepped offset Extension 11 'on is used for recording one illustrated with a dash-dot line Clamping spring 12 for frictional mounting one hexagonal in cross section Screwdriver insert.
  • Clamping spring 12 for frictional mounting one hexagonal in cross section Screwdriver insert.
  • the clamping spring 12 is provided with a hexagon opening 13, to which there is a larger section, the Bearing sleeve 7 through hole 13 'connects.
  • the guide collar 11 of the driven core part 8 passes through a bore 14 of the pot base 15 ' of a cup-shaped section member 15 Pot edge surface 15 '' extends before the transition step between the bore sections 4 and 5 and forms an outward-facing one Collar 15 '' '.
  • an inner groove is inserted 4 'of the bore section 4 entering spring ring 16 and holds the switching element 15 and thus also the output core part 8 in its axially immovable Position with respect to the drive ring part 3rd
  • the guide surfaces 9 'plus output core part 8 lie on the inner wall of the pot 15 '' '' and enlarge thus the bearing length of the switching element 15.
  • Three of the pot edge area 15 '' go in the same Angle distribution arranged driver 17. The same are designed as axially protruding fingers and the same material as the switching element 15 molded. It is advisable to use the switching element 15 including the driver 17 made of plastic manufacture. This is at the level of a driver Switching element 15 with extending in the axial direction groove-like recesses 18, 19 and 19 ' equipped with a locking ball 20 of the output core part 8 interact. To this Purpose has the output core part 8 on one of its Bisecting a blind hole 21 for Recording the locking ball 20 and one in Compression spring 22 acting outward.
  • the locking ball 20 engages with her projecting area in the middle Locking recess 18, so that in this position all drivers 17 the guide surfaces 9 ' of the output core part triangular in cross section 8 face each other.
  • the inner surfaces 17 'of the driver 17 are aligned with the inner pot wall 15 '' '', while the outer surfaces 17 '' from the wall of the bore section 5 of the drive ring part 3 are guided. Otherwise, the drivers 17 reach up to the Protrusions 10 of the output core part 8, see Fig. 1.
  • terminal spaces 23 are formed between the triangular sides 9 of the driven core part 8 and the wall of the bore section 5 terminal spaces 23 are formed.
  • this clamping space 23 forms in its circumferential direction lying end areas clamping gusset 23 '.
  • Loose in each of a terminal space 23 a roller-shaped clamping body 24.
  • the middle switching position of the switching element 15 extend the clamping body 24 approximately at height the apex of the spherical triangular sides 9, cf. 2 and 3.
  • roller-shaped clamping bodies 24 lie with part of their one end face 25 in front of the Bottom surfaces 10 '' of the supernatants 10 and accordingly secured in one direction from these.
  • the position assurance in the other direction get the clamp body 24 through the other End face 26 overlapping pot edge face 15 '' of the switching element 15. Since the driver 17 up to the bottom surfaces 10 '' of the protrusions 10 are sufficient or slightly above them Long dimensioned radial control surfaces 17 '' 'on the Carriers 17 before.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Clamps And Clips (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Lock And Its Accessories (AREA)

Claims (10)

  1. Outil de manoeuvre de vis et écrous, avec un dispositif d'encliquetage à sens de commutation inversible, avec des corps de serrage (24), situés dans des espaces de serrage, qui ont une forme de coin, entre une partie de bague d'entraínement extérieure (3) et une partie entraínée de noyau inférieure (8), à section transversale à peu près triangulaire, les corps de serrage (24) étant susceptibles d'être déplacés en position de libération par rapport aux parois de coin de l'espace de serrage correspondant, grâce à l'organe (15) de commutation rotatif, produisant un enclenchement lorsqu'il est dans ses positions de commutation, le déplacement s'effectuant grâce à des organes d'entraínement, agissant sur les corps de serrage, qui, lorsqu'ils sont dans une position de commutation, permettant une libération dans un sens de rotation, de l'organe de commutation, bloquent chaque fois le passage des corps de serrage (24) dans l'une de ses deux positions de serrage, une bille d'encliquetage (20), soumise à la précontrainte d'un ressort, s'engageant dans une cavité d'encliquetage (18, 19, 19') associée, en vue de l'enclenchement de l'organe (15) de commutation dans la position de manoeuvre respective, qui permet une libération dans un sens de rotation, dans lequel chacun des corps de serrage (24) s'introduit avec du jeu dans un espace de serrage et est déplaçable dans sa position de serrage par le mouvement de rotation de la partie de bague d'entraínement (3), et dans lequel la plus grande largeur des cavités d'encliquetage (19, 19'), associées aux positions de commutation qui permettent une course libre dans un sens de rotation, est plus grande, dans le sens de la rotation, que le diamètre de la bille d'encliquetage (20) et la cavité d'encliquetage présente la configuration d'un corps concave dans lequel la bille de verrouillage est placée dans une position de centrage par le ressort de compression qui la sollicite.
  2. Outil de manoeuvre de vis et écrous selon la revendication 1, caractérisé en ce que les côtés (9) du triangle de la partie de noyau entraínée (8) sont bombés et présentent un degré de courbure moindre que celui de la partie de bague d'entraínement (3).
  3. Outil de manoeuvre de vis et écrous selon une ou plusieurs des revendications précédentes, caractérisé en ce que la partie de noyau entraínée (8) porte sur l'une de ses bissectrices, dans un trou borgne (21), les billes d'encliquetage (20), et les cavités d'encliquetage (19, 19') réalisées sur la paroi intérieure (15'') d'un organe de commutation (15) en forme de cloche, présentent les organes d'entraínement (17) sous forme de doigts faisant saillie axialement.
  4. Outil de manoeuvre de vis et écrous selon la revendication 3, caractérisé en ce que la partie de noyau entraínée (8) présente des surfaces de guidage (9), réalisées transversalement aux bissectrices, s'étendant concentriquement. qui prennent appui sur la paroi intérieure de cloche (15'').
  5. Outil de manoeuvre de vis et écrous selon une ou plusieurs des revendications précédentes, caractérisé en ce que la partie de noyau entraínée (8) comporte une collerette centrale de guidage (11), passant par un alésage (14) du fond de cloche (15') de l'organe de commutation (15).
  6. Outil de manoeuvre de vis et écrous selon la revendication 5, caractérisé en ce que sur la face opposée à la collerette de guidage (11), la partie de noyau entraínée (8) comporte une douille centrale de guidage (7), faisant saillie dans un corps intérieur de prise de tournevis (2), dont la surface d'enveloppe est équipée de nervures de portée (7, 7').
  7. Outil de manoeuvre de vis et écrous selon une ou plusieurs des revendications précédentes, caractérisé en ce que les corps de serrage (24) sont réalisés sous forme de rouleaux et viennent en appui partiel, seulement par leur surface frontale (25), sur des surfaces de fond (10') forées dans la zone des espaces de serrage (23) des extrémités (10) de la partie de noyau entraínée (8).
  8. Outil de manoeuvre de 'vis et écrous selon une ou plusieurs des revendications précédentes, caractérisé en ce que les arêtes extérieures (10) de la surface de fond (10') et la surface de guidage (9) se complètent en formant un cercle.
  9. Outil de manoeuvre de vis et écrous selon une ou plusieurs des revendications précédentes, caractérisé en ce que les organes d'entraínement (17) atteignent les surfaces de fond (10') et la longueur axiale des corps de serrage (24) correspond à celle des organes d'entraínement (17), de façon que l'autre surface frontale (26) des corps de serrage (24) en forme de rouleau soit captée par la surface de bordure de cloche (15') de l'organe de commutation (15).
  10. Outil de manoeuvre de vis et écrous selon une ou plusieurs des revendications précédentes, caractérisé
    en ce que trois cavités d'encliquetage (18, 19, 19') sont formées et disposées pour trois positions de commutation,
    en ce que la cavité d'encliquetage (18) qui correspond à une position centrale de manoeuvre, agissant dans les deux sens de rotation, correspond par aiustement de forme à la section transversale d'entrée de bille et
    en ce que les deux cavités d'encliquetage (19, 19') directement voisines sont formées avec un fond concave.
EP87113367A 1987-02-21 1987-09-12 Outil à visser Expired - Lifetime EP0279899B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87113367T ATE70211T1 (de) 1987-02-21 1987-09-12 Schraubwerkzeug.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3705663 1987-02-21
DE3705663A DE3705663C3 (de) 1985-10-31 1987-02-21 Schraubwerkzeug

Publications (3)

Publication Number Publication Date
EP0279899A1 EP0279899A1 (fr) 1988-08-31
EP0279899B1 EP0279899B1 (fr) 1991-12-11
EP0279899B2 true EP0279899B2 (fr) 1998-04-29

Family

ID=6321526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87113367A Expired - Lifetime EP0279899B2 (fr) 1987-02-21 1987-09-12 Outil à visser

Country Status (4)

Country Link
EP (1) EP0279899B2 (fr)
AT (1) ATE70211T1 (fr)
DE (2) DE3775207D1 (fr)
ES (1) ES2028013T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8800407B2 (en) 2008-11-07 2014-08-12 Milwaukee Electric Tool Corporation Method of manufacturing a tool bit

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0009675D0 (en) * 2000-04-20 2000-06-07 Ball Burnishing Mach Tools Mechanical coupling devices
USD623036S1 (en) 2008-11-07 2010-09-07 Milwaukee Electric Tool Corporation Insert bit
USD711719S1 (en) 2009-11-06 2014-08-26 Milwaukee Electric Tool Corporation Tool bit
US10022845B2 (en) 2014-01-16 2018-07-17 Milwaukee Electric Tool Corporation Tool bit
US11638987B2 (en) 2017-12-01 2023-05-02 Milwaukee Electric Tool Corporation Wear resistant tool bit
USD921468S1 (en) 2018-08-10 2021-06-08 Milwaukee Electric Tool Corporation Driver bit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2240922A1 (de) * 1972-08-19 1974-03-07 Werkzeug Union Gmbh Schraubenschluessel u. dgl. mit einem reversierbaren schaltwerk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8800407B2 (en) 2008-11-07 2014-08-12 Milwaukee Electric Tool Corporation Method of manufacturing a tool bit

Also Published As

Publication number Publication date
DE3775207D1 (de) 1992-01-23
DE8717888U1 (de) 1991-03-07
ATE70211T1 (de) 1991-12-15
ES2028013T3 (es) 1992-07-01
EP0279899B1 (fr) 1991-12-11
EP0279899A1 (fr) 1988-08-31

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