EP3141346A1 - Porte-embout a limitation de profondeur - Google Patents
Porte-embout a limitation de profondeur Download PDFInfo
- Publication number
- EP3141346A1 EP3141346A1 EP16183722.4A EP16183722A EP3141346A1 EP 3141346 A1 EP3141346 A1 EP 3141346A1 EP 16183722 A EP16183722 A EP 16183722A EP 3141346 A1 EP3141346 A1 EP 3141346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling
- sleeve
- drive shaft
- bit holder
- section
- 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.)
- Granted
Links
- 238000010168 coupling process Methods 0.000 claims abstract description 203
- 238000005859 coupling reaction Methods 0.000 claims abstract description 203
- 230000008878 coupling Effects 0.000 claims abstract description 193
- 238000003780 insertion Methods 0.000 claims abstract description 32
- 230000037431 insertion Effects 0.000 claims abstract description 32
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Images
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
- 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
-
- 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
- B25B23/0064—Means for adjusting screwing depth
Definitions
- the invention relates to a bit holder with a drive shaft, an insertion opening for inserting a polygonal profile section of a screwdriver bit, with an actuating sleeve which is transmitted in the axial direction - relative to the axis of rotation of the drive shaft - from a coupling position in which a rotation of the drive shaft to the screwdriver bit in a freewheeling position in which a rotation of the drive shaft is not transmitted to the screwdriver bit, is displaceable, with at least one coupling element which is rotatably associated with the actuating sleeve, which does not abut in the coupling position and in the freewheeling position on a coupling surface.
- Such a bit holder describes the DE 20 2008 003 131 U1 ,
- a polygonal section of a screwdriver bit is inserted in an insertion opening of a sleeve part which has a round cross section.
- coupling elements in the form of balls, through the window of a wall projecting through the insertion opening and engage the polygonal surfaces of the bit, so that it is tied non-rotatably in the insertion opening.
- a radial outward displacement of the coupling balls is prevented by an inner wall of a cavity of an actuating sleeve. If the actuating sleeve is displaced from the coupling position into a release position, the coupling balls can deflect radially, so that the bit can rotate within the insertion opening.
- the DE 36 37 852 C1 describes a screwing tool with a drive shaft and a driven shaft, wherein the output shaft has an insertion opening for inserting the polygonal portion of a screwdriver bit.
- the drive shaft and the output shaft are coupled together via a dog clutch. By an axial displacement of the two shafts, the dog clutch can be opened.
- the invention has for its object to further develop a generic bit holder benefits advantageous and in particular to provide measures that improve the coupling and decoupling.
- the drive shaft is coupled by means of a coupling sleeve with the output sleeve part.
- the output sleeve part is intended to at least partially surround the drive shaft. It may have a cavity into which projects the drive shaft or through which the drive shaft protrudes.
- the coupling sleeve can be displaceable in the direction of the axis of rotation of the coupling position in the freewheeling position. In the coupling position is a coupling zone, eg. A clutch contact surface of the coupling sleeve to a counter-coupling zone, for example. A clutch surface of the drive shaft on.
- the clutch contact surface and the coupling surface may each be a surface of a polygonal arrangement, which engage positively in the coupling position.
- the coupling sleeve may also be connected to the output sleeve part via an interlocking polygonal positive connection, so that it can be displaced in the axial direction relative to the output sleeve part and is connected in a rotationally fixed manner to the output sleeve part.
- the drive shaft When the at least one clutch contact surface bears against the at least one clutch face, the drive shaft is connected in a rotationally fixed manner to the driven sleeve part, so that a torque exerted on the drive shaft is transmitted to the driven sleeve part.
- the freewheeling position are in the coupling zone and the counter-coupling zone in each case in the radial direction freewheeling sections opposite, wherein in the coupling zone and the counter-coupling zone each have a freewheeling section may be axially adjacent.
- the at least one clutch contact surface is not in positive surface contact on the at least one coupling surface, but in a region in which no torque transmission takes place. For example.
- the at least one coupling contact surface may be opposite a round section of the drive shaft in the radial direction.
- the at least one coupling surface of the drive shaft may be opposite a round portion of the coupling sleeve, so that the coupling contact surfaces and coupling surfaces formed in particular of polygonal surfaces can rotate freely relative to the respective other component.
- the coupling surface lies in the region of a freewheeling section of the drive part, which is axially adjacent to the coupling surface.
- the freewheeling portion of the coupling surface is immediately adjacent axially.
- the said round portion of the coupling sleeve forms a freewheeling section and is preferably adjacent to the coupling bearing surface directly in the axial direction.
- the stop is formed by an actuating sleeve or is associated with the actuating sleeve.
- the stop may be formed by a stop ring.
- the latter can be inserted in a rotationally fixed manner in a mouth opening of the actuating sleeve.
- the mouth opening is assigned to the end of the actuating sleeve associated with the insertion opening.
- the clutch contact surface is formed by an inner polygonal surface, for example, with a dodecagonal ground plan.
- the coupling surface may be a surface of an outer polygon, which in particular has a hexagonal floor plan.
- the second inner polygonal section serves for the rotationally fixed connection of the coupling sleeve with the driven sleeve part.
- the inner polygonal section sits axially displaceably on an outer polygonal section of the driven sleeve part.
- the internal polygonal section has an axial length such that it can simultaneously sit on the outer polygonal section of the output sleeve part and on an outer polygonal section of the drive shaft, so that the second polygonal section can realize a further coupling position in which the drive shaft is non-rotatably connected to the driven sleeve part.
- This second coupling position is in particular achieved in that the actuating sleeve is completely withdrawn against the restoring force of a spring.
- the tip of a stuck in the insertion of the driven sleeve part bits passes through the Mouth opening of the actuating sleeve, so that it can be pulled out of the insertion.
- free screwing is also possible in this position.
- the coupling sleeve is held by the force of a spring in the first coupling position, wherein the spring is preferably supported with its one end on the output sleeve part and with its other end on the actuating sleeve.
- the spring In this operating position, only a frontmost section of the tip of the bit inserted in the insertion opening projects beyond the mouth of the actuating sleeve.
- the coupling surface is not formed by a polygonal surface of the polygonal profile section of the screwdriver bit. Rather, the coupling surface is formed by a portion of the insertion shaft.
- the insertion shaft has a coupling section, which can be formed by a polygonal section.
- the coupling surfaces are preferably flat or slightly curved Surfaces. But they can also be strongly curved or formed of several partial surfaces.
- the coupling section is inserted in a bearing bore, round in cross-section, of a driven sleeve part.
- the output sleeve part also forms the insertion opening for inserting the polygonal profile section of the screwdriver bit.
- this insertion opening has a polygonal cross-section, so that the screwdriver bit preferably always rotatably inserted in the insertion.
- the coupling portion is a freewheeling section axially adjacent.
- the at least one coupling element is axially and rotationally associated with the actuating sleeve. If the actuating sleeve is displaced axially, then the coupling element is moved along.
- the coupling element protrudes through a longitudinal slot of the wall of the bearing bore in the bearing bore, so that a surface portion of the coupling element preferably bears flat against the coupling surface.
- the coupling element In an axial displacement of the coupling element in the longitudinal slot, which is associated with an axial displacement of the actuating sleeve in the axial direction - with respect to the axis of the drive shaft -, the coupling element displaced from the coupling portion in the freewheeling section, where it is in no rotationally inhibiting functional position for drive shaft.
- the coupling position are preferably surface portions of a plurality of coupling elements, each of which pass through a longitudinal slot, each on a polygonal surface of a polygonal section of the drive shaft, so that the drive shaft is rotatably coupled to the output sleeve part.
- the freewheeling section is preferably a round section which has a circular cross section.
- the coupling element is preferably a substantially cuboidal body, which consists of a hard Material, such as a hardened steel can exist.
- the coupling body is constrained by suitable means within the actuating sleeve in the radial direction. For this purpose, in particular a binding sleeve is provided, which is inserted in the actuating sleeve.
- the actuating sleeve has an axial opening for this purpose.
- the bondage sleeve is preferably in a press fit in the actuating sleeve. It may have an inner circumferential recess, which has a cylinder jacket inner wall, bear against the radially outwardly directed surface portions of the coupling elements.
- the width of the longitudinal slot substantially corresponds to the circumferential width of the coupling elements, so that they are substantially free of play in the circumferential direction, but displaceable in the longitudinal slot in the axial direction. They form torque-transmitting bodies in order to transmit torque from the drive shaft to the output sleeve part.
- the bearing bore and the insertion for the screwdriver bit are in an axial alignment position and are preferably separated by a partition, which forms a bottom of the insertion and a bottom of the bearing bore.
- a locking pin For axial captivation of the drive shaft to the output sleeve part, a locking pin can be provided.
- This locking pin is inserted in a bore of the drive sleeve part and protrudes with a radially inwardly directed end portion in an annular groove of the drive shaft.
- a radially outer portion of the locking pin can engage in a recess of the actuating sleeve.
- This recess is preferably formed by a jacket body of the actuating sleeve.
- the at least one coupling element preferably engages through the window assigned to it.
- the actuating sleeve has a mouth end. In this mouth end, a ring magnet can be arranged.
- the ring magnet can be arranged behind a stop ring, which can occur when screwing against the workpiece to cause an axial displacement of the actuating sleeve relative to the output sleeve part, so that the coupling elements are brought from their coupling position in the freewheeling position in which the drive shaft is free from the Can turn output sleeve part.
- a second polygonal section is provided in addition to the first polygonal section described above, wherein the freewheel section lies between two polygonal sections.
- the sheath body of the actuating sleeve may be made of plastic and have two opposite radially expanded portions of a through-hole.
- a plug-in opening forming portion of the driven sleeve part In the radially extended Axialendö réelleen stuck on one side of the bond sleeve and on the other side of the magnet or the stop ring.
- the actuating sleeve is preferably rotatably associated with the driven sleeve part, so that it can be held by the fingers of the user in the second coupling position when the drive shaft or the screwdriver bit is rotated.
- the bit holder shown in the drawings has a drive shaft 1, which has a free end with a drive profile 9.
- the free end can be plugged into a drive chuck of an electric screwdriver so that turning the chuck rotates the drive shaft 1 about its longitudinal axis.
- the drive shaft 1 is inserted with the drive profile 9 opposite end in a bearing bore 22 of a driven sleeve part 20, which is made of metal.
- the bearing bore 22 has a circular cross-sectional area, so that the drive shaft 1 can basically rotate within the bearing bore 22.
- the front end 8 of the drive shaft 1 is supported on a bottom 23 of the bearing bore 22, which has an outer side of a Forming wall, which forms the bottom of an insertion opening 21 for inserting a polygonal profile section 34 of a screwdriver bit 33 with the opposite outer wall 21 '.
- the cross-section of the insertion opening 21 is polygonal and substantially corresponds to the cross-section of the hexagonal section 34 of the screwdriver bit 33, so that the screwdriver bit 33 is inserted into the insertion opening 21 in a rotationally fixed manner.
- annular groove 7 Immediately adjacent to the front end 8 of the drive shaft 1 has an annular groove 7.
- annular groove 7 engages an end portion of a locking pin 31 which is inserted in a radial bore 32 of the driven sleeve part 20.
- a pointing radially outward end of the pin 31 can engage in a recess 17 of a jacket body 30 of an actuating sleeve 10. It can be provided a plurality of circumferentially equally distributed recesses 17.
- the drive shaft 1 forms, with its portion which projects into the bearing bore 22, three functional zones 2, 3, 4 which are arranged one behind the other in the axial direction and which cooperate with at least one coupling element 25.
- three coupling elements 25 are provided, each having the shape of a cuboid. They can be made of a hardened material, such as carbide.
- the coupling elements 25 have a coupling bearing surface 25 ', which in a coupling position ( FIGS. 2 and 3 ) abut respectively on a coupling surface 2 'of a first polygonal section 2 of the drive shaft 1.
- the measured in the circumferential direction width of the coupling elements 25 corresponds to the slot width of a respective longitudinal slot 24 in which a coupling element 25 can move parallel to the axial direction of the drive shaft 1.
- the coupling elements 25 pass through a respective window formed by the longitudinal slot 24, wherein their ends forming the coupling bearing surfaces lie within the bearing bore 22 and their opposite ends cooperate radially outside with the actuating sleeve 10.
- the side of the coupling element 25 opposite the surface forming the coupling surface 25 'of the coupling element 25 bears against a cylinder inner surface, so that the coupling element 25 can not escape in the radial direction.
- the contact surface on which bears the radially outwardly facing side of the coupling element 25 is formed by a captive sleeve 26. It has an inner circumferential recess 27, which forms the contact surface.
- the binding sleeve 26 is inserted in a recess 11 of the jacket body 30 of the actuating sleeve 10. At a stage 15 of the recess 11, an annular disc 28 is supported, which effectively closes the inner peripheral recess 27. The edge of the binding sleeve 26 is supported for this purpose on the annular disc 28.
- a ring magnet 19 In a recess which is arranged at the other axial end of the actuating sleeve 10, inserted a ring magnet 19. This is held by a stuck in the mouth opening 13 stop ring 18.
- the orifice 13 is spaced from the output sleeve part 20 in such a way that a screwdriver bit 33, which is inserted in the insertion opening 21, in the first coupling position (FIG. FIG. 2 ) protrudes with its working tip from the mouth opening 13.
- the head of a screw can rest on the magnet 19, so that the screw head is held on the bit holder.
- a helical-compression spring 29 is provided, which is located in a cavity section 16 of the actuating sleeve 10, which cavity section 16 is formed by the jacket body 30.
- One end of the spring supports at a stage 14 of the actuating sleeve 10 from.
- the other end of the spring 29 is supported on a stage of the output sleeve part 20, so that the spring 29, the actuating sleeve 10 in the direction of in the FIG. 2 applied Kupplungsstelung.
- the bit holder When screwing a screw, the bit holder is in the FIGS. 2 and 3 illustrated coupling position, so that a rotation of the drive shaft 1 is transmitted via the rotationally locked bit 33 to a screw.
- the stop ring 18 comes against the workpiece, so that subsequently the actuating sleeve 10 is displaced in the axial direction relative to the output sleeve part 20.
- the coupling elements 25 leave their first coupling position and travel within the longitudinal slot 24 in the direction of the functional zone 3, which is formed by a freewheeling section 3 of the drive shaft 1. It is a round section with a circular peripheral surface.
- the third functional zone 4 which has a cross-section as the first functional zone 2.
- the third functional zone 4 is around a second polygonal section 4 with second polygonal surfaces 4 '.
- the actuating sleeve 10 can be held in this position by hand, since it can rotate freely relative to the output sleeve part 20. This is a consequence of the design of the recess 27 as a ring recess, so that the coupling elements 25 can move relative to the binding sleeve 26 within the recess 27 in the circumferential direction.
- the bondage sleeve 26 has the function of a coupling sleeve. It is to be displaced axially to bring the coupling element 25 from the coupling position to the freewheeling position.
- FIGS. 10 to 17 show a second embodiment whose external appearance in the first embodiment ( FIG. 1 ) corresponds.
- a drive shaft 1 has a drive profile 9 in the form of a hexagon outer profile, which can be inserted into the lining of an electric screw.
- an intermediate section connects, which merges into a polygonal section, which forms a coupling zone with coupling surfaces 2 '.
- the coupling surfaces 2 ' are formed by an outer hexagonal portion of the drive shaft 1.
- a round section connects to this polygonal section, which has a circumferential groove 7.
- the round portion of the drive shaft 1 is inserted in a circular cross section having cavity of a driven sleeve part 20.
- the circumferential groove 7 is assigned an annular groove 36 of the cavity wall locally.
- the abutting with its face at the bottom of the cavity extension of the drive shaft 1 is tied in the axial direction by means of a locking ring 35 to the output sleeve part 20.
- the securing ring 35 simultaneously engages in the annular grooves 7, 35.
- the cavity, in which the extension of the drive shaft 1 is inserted, is opposite to an insertion opening 21 for insertion of a bit 33.
- a helical gear compression spring 29 is supported, which abuts with its other end to a step of a cavity 12 of an actuating sleeve 10.
- the actuating sleeve 10 surrounds the protruding from the insertion opening 21 portion of the bit 33 and the output sleeve part 20.
- the actuating sleeve 10 can from the stop-bound, in the FIG. 10 illustrated coupling position against the restoring force of the spring 29 in the axial direction in the in FIG. 15 illustrated freewheeling position and beyond to the in the FIG. 17 be shown shifted second coupling position.
- the mouth of the actuating sleeve 10 has a non-circular mouth opening 13, in which a non-circular outer plan view having stop ring 18 rotatably inserted.
- the stop ring 18 also holds a ring magnet 19th
- the coupling sleeve 26 is axially fixed and rotatably associated with the actuating sleeve 10. It has at its end facing the drive shaft 1, a coupling element 25.
- the coupling element 25 is a unitary component of the coupling sleeve 26 and is characterized by a polygonal surface, wherein the internal polygonal surface clutch bearing surfaces 25 'form, in the in the FIG. 10 shown coupling position and thus rest form-fitting manner on the coupling surfaces 2 'of the outer polygonal section of the drive shaft 1.
- the coupling element 25 is followed by a round section 39. It is an enlarged diameter section.
- the rounding portion 39 has an axial extension length which is greater than the axial extension length of the coupling surface 2 'or of the outer polygon portion of the drive shaft 1 forming the coupling surface 2'.
- the inner polygonal surfaces 8 of the polygonal section 38 are aligned with the polygonal inner surfaces 25 'of the coupling element 25.
- the rounding section 39 thus forms an enlarged diameter portion extending on a circular line wall of a polygon socket interior of the Coupling sleeve 26 off.
- the polygonal surfaces of the polygonal section 37 are in flat and thus positive engagement with the polygonal surfaces of the outer polygonal section 38 of the output sleeve part 20, so that the coupling sleeve 26 rotatably but axially displaceable associated with the output sleeve part 20.
- FIG. 10 illustrated coupling position is applied to the drive shaft 1 torque over the surface pairing 2 ', 25' transmitted to the coupling sleeve 26 and thereof via the surface pairing 37, 38 on the output sleeve part 20th
- FIG. 15 shows the freewheeling position then reached, in which the drive shaft 1 can rotate freely without rotational drive of the coupling sleeve 26.
- the coupling zone 25 'of the coupling sleeve 26 surrounds the freewheeling section 3 of the drive shaft 1.
- the counter-coupling zone 2' of the drive shaft 1 is surrounded by the freewheeling zone 39 of the coupling sleeve 26.
- a bit holder having a drive shaft 1 rotatably driven about an axis of rotation, having an insertion opening 21 for inserting a screwdriver bit 33 having output sleeve part 20, with a coupling sleeve 26 which surrounds the drive shaft 1 at least partially and in the direction of the axis of rotation of a coupling position, in a A coupling surface 25 'abuts a counter coupling zone, eg a coupling surface 2' of the drive shaft 1, so that a rotation of the drive shaft 1 is transmitted to the output sleeve part 20, is displaceable in a freewheeling position in which the coupling zone and the counter-coupling zone each in freewheeling sections 3, 39 of the drive shaft 1 and output sleeve part 20 are such that a rotation of the drive shaft 1 is not transmitted to the output sleeve part (20);
- a bit holder which is characterized in that the coupling sleeve 26 is axially fixed to an actuating sleeve 10 which forms a stop at its end facing the insertion opening 21;
- a bit holder which is characterized in that the coupling sleeve 26 rotatably but axially displaceable associated with the output sleeve part 20 and / or the coupling sleeve 26 rotatably inserted in the actuating sleeve 10;
- a bit holder which is characterized in that the stop of the actuating sleeve 10 is formed by a stop ring 18 which is non-rotatably inserted in a mouth opening 13 of the actuating sleeve 10;
- a bit holder which is characterized in that the coupling abutment surface 25 'is an internal polygonal surface which in particular has a dodecagonal ground plan and / or that the coupling surface 2' is a surface of an external polygon, which in particular has a hexagonal floor plan;
- a bit holder which is characterized in that in the axial direction, a round portion 39 is adjacent to a coupling element 25 'having the clutch contact surface 25', which is in the freewheeling position at the axial height of the coupling surfaces 2;
- a bit holder which is characterized in that the coupling sleeve 26 forms an inner polygonal section 37 which is non-rotatably mounted on an outer polygonal section 38 of the driven sleeve part 20;
- a bit holder characterized in that by a disposed in the mouth opening 13 magnet 19 and / or a spring 29 which acts on the actuating sleeve 10 axially in the direction of the coupling position;
- a bit holder which is characterized in that at least one polygonal surface of the polygon socket section 37 rests in the second coupling position on the coupling surface 2 ';
- a bit holder which is characterized in that the coupling sleeve 26 is a captive sleeve 26 and at least one longitudinal slot 24 through which a axially and rotationally fixed to the actuating sleeve (10) associated coupling element 25 axially displaceable protrudes, wherein the coupling element 25, the clutch contact surface 25 'forms and shifts in the displacement of the coupling position in the freewheeling position within the longitudinal slot 24.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015113682.1A DE102015113682A1 (de) | 2015-08-18 | 2015-08-18 | Bithalter mit Tiefenbegrenzung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3141346A1 true EP3141346A1 (fr) | 2017-03-15 |
EP3141346B1 EP3141346B1 (fr) | 2019-09-25 |
Family
ID=56801384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16183722.4A Active EP3141346B1 (fr) | 2015-08-18 | 2016-08-11 | Porte-embout a limitation de profondeur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3141346B1 (fr) |
DE (1) | DE102015113682A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT521282A2 (de) * | 2018-05-28 | 2019-12-15 | Haxhaj Driton | Mechanischer Bit-Halter |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3637852C1 (en) | 1986-11-06 | 1988-03-10 | Helfer & Co Kg | Coupling for power-driven screwdrivers/wrenches |
DE202008003131U1 (de) | 2008-03-05 | 2008-09-04 | Rajotte, Jacques, Hood River | Schraubendrehervorrichtung |
US20090049961A1 (en) * | 2007-08-20 | 2009-02-26 | Ho-Tien Chen | Torque releasing clutch for a screw driver blade |
US20140165794A1 (en) * | 2012-12-18 | 2014-06-19 | Wen Hung Chiang | Fastener holder for power tool |
US20150037111A1 (en) * | 2013-08-04 | 2015-02-05 | Chi-Hsiung Chang | Positioning sleeve assembly adapted for engaging with different tool parts |
US20150122089A1 (en) * | 2013-11-04 | 2015-05-07 | Jacques Rajotte | Screw driving device with adjustable countersink depth |
-
2015
- 2015-08-18 DE DE102015113682.1A patent/DE102015113682A1/de active Pending
-
2016
- 2016-08-11 EP EP16183722.4A patent/EP3141346B1/fr active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3637852C1 (en) | 1986-11-06 | 1988-03-10 | Helfer & Co Kg | Coupling for power-driven screwdrivers/wrenches |
US20090049961A1 (en) * | 2007-08-20 | 2009-02-26 | Ho-Tien Chen | Torque releasing clutch for a screw driver blade |
DE202008003131U1 (de) | 2008-03-05 | 2008-09-04 | Rajotte, Jacques, Hood River | Schraubendrehervorrichtung |
US20140165794A1 (en) * | 2012-12-18 | 2014-06-19 | Wen Hung Chiang | Fastener holder for power tool |
US20150037111A1 (en) * | 2013-08-04 | 2015-02-05 | Chi-Hsiung Chang | Positioning sleeve assembly adapted for engaging with different tool parts |
US20150122089A1 (en) * | 2013-11-04 | 2015-05-07 | Jacques Rajotte | Screw driving device with adjustable countersink depth |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT521282A2 (de) * | 2018-05-28 | 2019-12-15 | Haxhaj Driton | Mechanischer Bit-Halter |
Also Published As
Publication number | Publication date |
---|---|
DE102015113682A1 (de) | 2017-02-23 |
EP3141346B1 (fr) | 2019-09-25 |
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