EP3670084B1 - Impact driver screw driving device with depth adjustment - Google Patents
Impact driver screw driving device with depth adjustment Download PDFInfo
- Publication number
- EP3670084B1 EP3670084B1 EP19212461.8A EP19212461A EP3670084B1 EP 3670084 B1 EP3670084 B1 EP 3670084B1 EP 19212461 A EP19212461 A EP 19212461A EP 3670084 B1 EP3670084 B1 EP 3670084B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- depth adjustment
- sleeve
- screw driving
- driving device
- screw
- 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.)
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Links
- 230000007246 mechanism Effects 0.000 claims description 34
- 230000000717 retained effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 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
-
- 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
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/12—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using magnetic means
Definitions
- the present invention relates to a screw driving device and, in particular, an impact driver screw driving device with depth adjustment to adjustably control a depth to which a screw is driven into a work piece.
- the invention therefore provides an impact driver screw driving device with depth adjustment, comprising: a screw driving mechanism that retains a screw bit for driving screws into a work surface; a floating sleeve that surrounds the screw driving mechanism; a floating sleeve spring that provides a constant bias between an upper end of the floating sleeve and an upper end of a hollow clutch sleeve of the screw driving mechanism; a depth control sleeve threadedly connected to a bottom end of the floating sleeve, the depth control sleeve having a bottom end with a passage through which the screw bit extends; and a clutch spring that constantly urges the screw driving mechanism to a drive position, characterised in that the floating sleeve (16) comprises a plurality of depth adjustment indexes (22), and the depth control sleeve comprises a depth adjustment indicator (20) that is manually displaceable by rotation of the depth adjustment sleeve (18) on the floating sleeve (16) to move the depth adjustment indicator (20)
- the invention provides an impact driver screw driving device with depth adjustment which has a floating sleeve that surrounds a screw driving mechanism that retains a screw bit.
- a floating sleeve spring provides a constant bias between a top of the floating sleeve and a top of the screw driving device.
- a depth adjustment sleeve is threadedly connected to a lower end of the floating sleeve.
- the floating sleeve and the depth adjustment sleeve are free to rotate independently of the screw driving device so concussive force of the impact driver does not change a driven screw depth adjustment setting.
- the driven screw depth adjustment setting is set by manually rotating the depth adjustment sleeve to one of a plurality of predetermined driven screw depth settings while gripping the floating sleeve to prevent rotation thereof.
- FIG. 1 is a side elevational view of an impact driver screw driving device 10 with a depth adjustment mechanism 11 in accordance with the invention.
- the screw driving device 10 has a drive shaft 12 with a drive end 14 adapted to be engaged and driven by a portable electric impact driver (not shown), a hand tool that is well known in the art.
- a floating sleeve 16 surrounds the drive shaft 12 of a screw driving mechanism, which will be explained below with reference to FIGs. 4-6 .
- a depth adjustment sleeve 18 is threadedly connected to a bottom end of the floating sleeve 16, as will be also explained below in more detail with reference to FIGs. 2 and 3 .
- the depth adjustment sleeve 18 has a depth adjustment indicator 20 that indicates a current depth to which a screw is to be driven by the screw driving device 10.
- the depth adjustment indicator 20 aligns with one of a plurality of driven screw depth adjustment indexes 22 on the floating sleeve 16, as will be explained below with reference to FIG. 3 .
- a plurality of depth adjustment lock tabs 24 lock the depth adjustment sleeve 18 at a current driven screw depth adjustment index 22.
- the depth adjustment sleeve 18 is manually rotated to a different depth adjustment index 22 by an operator of the impact driver screw driving device 10, which changes a depth to which a screw (not shown) is driven in a work piece (not shown) by a screw bit 26.
- FIG. 2 is a cross-sectional view of the depth adjustment mechanism 11 of the impact driver screw driving device 10, taken along lines 2-2 of FIG. 1 .
- a floating sleeve spring 28 provides a constant bias between an upper end of the floating sleeve 16 and an upper end of the screw driving mechanism 30 (see FIG. 4 ).
- a top of the floating sleeve spring 28 is retained by a spring retainer washer 32. This permits the floating sleeve 16 and the depth adjustment sleeve 18 to rotate freely with respect to the screw driving mechanism 30, so concussive force of the impact driver does not change the driven screw depth adjustment.
- the spring retainer washer 32 is retained within the floating sleeve 16 by a washer retainer clip 34 received in a retainer clip groove 35 in a top end of the floating sleeve 16.
- the depth adjustment sleeve 18 is rotatably secured on the lower end of the floating sleeve 16 by a male thread 40 on the lower end of the floating sleeve 16 that engages a female thread 42 within the depth adjustment sleeve 18.
- FIG. 3 is a side elevational view of the impact driver screw driving device 10 showing the depth adjustment sleeve 18 partially cut away to illustrate depth adjustment notches 36 on a floating sleeve 16 of the depth adjustment mechanism 11.
- the depth adjustment notches 36 are interleaved by depth adjustment ridges 38.
- the depth adjustment notches 36 are equally distributed around a perimeter of the floating sleeve 16, there being one depth adjustment notch 36 for each depth adjustment index 22 of the screw driving device 10.
- the depth adjustment sleeve 18 is threadedly connected to the floating sleeve 16.
- the male thread 40 and female thread 42 are arranged such that the depth adjustment mechanism 11 is at maximum depth setting when the complimentary male thread 40 and female thread 42 are fully engaged.
- depth adjustment sleeve slots 44 are provided to facilitate deflection of the depth adjustment lock tabs 24 as they are respectively forced over the respective depth adjustment ridges 38 during a change to a different depth adjustment index 22.
- FIG. 4 is a cross-sectional view taken along lines 2-2 of FIG. 1 with the screw driving mechanism 30 of the impact driver screw driving device 10 in a screw driving position.
- the screw bit 26 rotates with the drive shaft 12 and is released from driving engagement with the drive shaft 12 when the screw driving mechanism 30 is in a clutched position, as will be explained below with reference to FIG. 5 .
- the drive end 14 of the drive shaft 12 extends through a central passage 48 in a hollow clutch sleeve 46.
- a top of the central passage 48 extends inwardly to form a hollow clutch sleeve stop 50 sized to permit the drive end 14 of the drive shaft 12 to pass through, but not permit a socket end 52 of the drive shaft 12 to pass through.
- a plurality of radial bores 54 through the socket end 52 of the drive shaft 12 respectively house a clutch bearing 56.
- the clutch bearings 56 are described in detail in Applicant's abovereferenced published co-pending United States patent application number 15/344,807, filed on November 7, 2016 .
- a flat inner end of the respective clutch bearings 56 engage flats on the hexagonal screw bit 26 in the drive position of the screw driving mechanism 30, so that the screw bit 26 rotates with the screw driving mechanism 30.
- the respective clutch bearings 56 collectively disengage from the screw bit 26 when the screw driving device 10 is in the clutched position, so that the screw bit 26 no longer rotates with the drive shaft 12.
- a clutch spring 58 is captured between a clutch spring retainer clip 60, held in a clutch spring retainer clip groove 61 on the drive shaft 12, and a top end of the hollow clutch sleeve 46.
- the clutch spring 58 constantly urges the hollow clutch sleeve 46 to the drive position of the screw driving device 10.
- a doughnut-shaped magnet 62 is received in a magnet socket 64 in the lower end of the depth control sleeve 18. The magnet 62 magnetically attracts a steel screw (not shown) placed on the screw bit 26 so that the screw remains on the screw bit 26 until the screw is driven by the impact driver screw driving device 10.
- the socket end 52 of the drive shaft 12 has a screw bit socket 66 which receives and retains the screw bit 26.
- the screw bit socket 66 is pierced by the plurality of radial bores 54 (only one is shown in the crosssection).
- the radial bores 54 respectively receive a one of the clutch bearings 56 that respectively engage the flats on the hexagonal screw bit 26 when the screw driving mechanism 30 is in the drive position shown.
- the hollow clutch sleeve 46 has a hollow clutch sleeve groove 68 sized to receive a rounded outer end of the respective clutch bearings 56 when the screw driving mechanism 30 is in the clutched position, so that the clutch bearings 56 disengage the screw bit 26 but remain captured in the respective radial bores 54.
- a ball bearing 70 friction fit in an axial bore 72 in an upper end of the screw bit socket 66 supports a top end of the screw bit 26 to permit the screw bit 26 to remain stationary while the drive shaft 12 rotates freely when the screw driving device 10 is in the clutched position.
- a circlip 73 captured in a radial groove 74 in the end of the screw bit socket 66 engages notches 76 in the screw bit 26 to removably retain the screw bit 26 in the screw bit socket 66.
- FIG. 5 is a cross-sectional view of the screw driving device 10 shown in the clutched position in which the screw bit 26 is released from driving engagement with the respective clutch bearings 56 so that a screw 78 is no longer driven by the screw driving mechanism 30.
- the bottom end of the depth control sleeve 18 contacts the work surface 80 and the drive shaft 12 slides downward through the central passage 48 of the hollow clutch sleeve 46 as the screw 78 is driven into the work surface 80 until the respective radial bores 54 align with the clutch sleeve groove 68 in the hollow clutch sleeve 46 and the respective clutch bearings 56 are forced outwardly into the clutch sleeve groove 68 by pressure exerted by the screw bit 26 as it engages the driven screw 78.
- FIG. 6 is a cross-sectional view of the screw driving device 10 shown in FIG. 4 manually held in a reverse drive position typically used to extract a driven screw from a workpiece.
- the floating sleeve 16 is gripped by the operator and pulled upwardly against the bias of the clutch spring 58.
- the respective clutch bearings 56 are below the clutch sleeve groove 68 in the hollow clutch sleeve 46 and engage respective flats on the screw bit 26, so that rotation of the drive shaft 12 in either direction rotates the screw bit in the same direction. This permits a driven screw 78 to be extracted from the work surface 80.
- the depth adjustment mechanism 11 rotates independently of the screw driving mechanism 30, the operator can hold the impact driver screw driving device 10 in the reverse drive position while extracting a screw for as long as necessary. This more can also be used to drive a screw deeper into the work surface 80, if desired.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
- The present invention relates to a screw driving device and, in particular, an impact driver screw driving device with depth adjustment to adjustably control a depth to which a screw is driven into a work piece.
- Existing devices for driving screws using an impact driver are known, as characterized by Applicant's co-pending published United States Patent application number
US/2018/0126523A1, published on 05-10-2018 entitled Screw Driving Device for Use With An Impact Driver. That device works extremely well for consistently driving screws to a predetermined depth determined by a length of a replaceable nose cone on the device. DocumentUS2016/375565 discloses an impact wrench according to the preamble of claim 1. - However, it is well known that a device with adjustable screw depth control is desirable. It is also understood that the concussive force generated by impact drivers transmits to prior art depth adjusting mechanisms, causing those mechanisms to change depth settings as a screw is driven into a workpiece, which is most undesirable.
- It is therefore an object of the invention to provide a screw driving device for an impact driver with a screw depth adjustment mechanism that will not change a depth setting to which it has been adjusted while screws are driven by the impact driver.
- The invention therefore provides an impact driver screw driving device with depth adjustment, comprising: a screw driving mechanism that retains a screw bit for driving screws into a work surface; a floating sleeve that surrounds the screw driving mechanism; a floating sleeve spring that provides a constant bias between an upper end of the floating sleeve and an upper end of a hollow clutch sleeve of the screw driving mechanism; a depth control sleeve threadedly connected to a bottom end of the floating sleeve, the depth control sleeve having a bottom end with a passage through which the screw bit extends; and a clutch spring that constantly urges the screw driving mechanism to a drive position, characterised in that the floating sleeve (16) comprises a plurality of depth adjustment indexes (22), and the depth control sleeve comprises a depth adjustment indicator (20) that is manually displaceable by rotation of the depth adjustment sleeve (18) on the floating sleeve (16) to move the depth adjustment indicator (20) from one depth adjustment index to another.
- Having thus generally described the nature of the invention, reference will now be made to the accompanying drawings, in which:
-
FIG. 1 is a side elevational view of an impact driver screw driving device with a depth adjustment mechanism in accordance with the invention; -
FIG. 2 is a cross-sectional view of the depth adjustment mechanism of the impact driver screw driving device taken along lines 2-2 ofFIG. 1 ; -
FIG. 3 is a side elevational view of the impact driver screw driving device showing a depth adjustment sleeve partially cut away to illustrate depth adjustment notches on a floating sleeve of the depth adjustment mechanism; -
FIG. 4 is a cross-sectional view taken along lines 2-2 ofFIG. 1 with the impact driver screw driving device in a screw driving position; -
FIG. 5 is a cross-sectional view taken along lines 2-2 ofFIG. 1 with the impact driver screw driving device in a clutch released position; -
FIG. 6 is a cross-sectional view taken along lines 2-2 ofFIG. 1 of the impact driver screw driving device in a bit-extended position used to extract a driven screw. - The invention provides an impact driver screw driving device with depth adjustment which has a floating sleeve that surrounds a screw driving mechanism that retains a screw bit. A floating sleeve spring provides a constant bias between a top of the floating sleeve and a top of the screw driving device. A depth adjustment sleeve is threadedly connected to a lower end of the floating sleeve. The floating sleeve and the depth adjustment sleeve are free to rotate independently of the screw driving device so concussive force of the impact driver does not change a driven screw depth adjustment setting. The driven screw depth adjustment setting is set by manually rotating the depth adjustment sleeve to one of a plurality of predetermined driven screw depth settings while gripping the floating sleeve to prevent rotation thereof.
-
FIG. 1 is a side elevational view of an impact driverscrew driving device 10 with adepth adjustment mechanism 11 in accordance with the invention. Thescrew driving device 10 has adrive shaft 12 with adrive end 14 adapted to be engaged and driven by a portable electric impact driver (not shown), a hand tool that is well known in the art. Afloating sleeve 16 surrounds thedrive shaft 12 of a screw driving mechanism, which will be explained below with reference toFIGs. 4-6 . Adepth adjustment sleeve 18 is threadedly connected to a bottom end of thefloating sleeve 16, as will be also explained below in more detail with reference toFIGs. 2 and3 . Thedepth adjustment sleeve 18 has adepth adjustment indicator 20 that indicates a current depth to which a screw is to be driven by thescrew driving device 10. Thedepth adjustment indicator 20 aligns with one of a plurality of driven screwdepth adjustment indexes 22 on thefloating sleeve 16, as will be explained below with reference toFIG. 3 . A plurality of depthadjustment lock tabs 24 lock thedepth adjustment sleeve 18 at a current driven screwdepth adjustment index 22. To change the driven screw depth adjustment, thedepth adjustment sleeve 18 is manually rotated to a differentdepth adjustment index 22 by an operator of the impact driverscrew driving device 10, which changes a depth to which a screw (not shown) is driven in a work piece (not shown) by ascrew bit 26. -
FIG. 2 is a cross-sectional view of thedepth adjustment mechanism 11 of the impact driverscrew driving device 10, taken along lines 2-2 ofFIG. 1 . Afloating sleeve spring 28 provides a constant bias between an upper end of thefloating sleeve 16 and an upper end of the screw driving mechanism 30 (seeFIG. 4 ). A top of the floatingsleeve spring 28 is retained by aspring retainer washer 32. This permits thefloating sleeve 16 and thedepth adjustment sleeve 18 to rotate freely with respect to thescrew driving mechanism 30, so concussive force of the impact driver does not change the driven screw depth adjustment. Thespring retainer washer 32 is retained within the floatingsleeve 16 by awasher retainer clip 34 received in aretainer clip groove 35 in a top end of thefloating sleeve 16. As can be seen, thedepth adjustment sleeve 18 is rotatably secured on the lower end of thefloating sleeve 16 by amale thread 40 on the lower end of the floatingsleeve 16 that engages afemale thread 42 within thedepth adjustment sleeve 18. -
FIG. 3 is a side elevational view of the impact driverscrew driving device 10 showing thedepth adjustment sleeve 18 partially cut away to illustratedepth adjustment notches 36 on afloating sleeve 16 of thedepth adjustment mechanism 11. Thedepth adjustment notches 36 are interleaved bydepth adjustment ridges 38. Thedepth adjustment notches 36 are equally distributed around a perimeter of thefloating sleeve 16, there being onedepth adjustment notch 36 for eachdepth adjustment index 22 of thescrew driving device 10. As explained above, thedepth adjustment sleeve 18 is threadedly connected to thefloating sleeve 16. In one embodiment, themale thread 40 andfemale thread 42 are arranged such that thedepth adjustment mechanism 11 is at maximum depth setting when the complimentarymale thread 40 andfemale thread 42 are fully engaged. To change a driven screw depth setting, the operator grips thefloating sleeve 16 and the depth adjustment sleeve 18 and rotates thedepth adjustment sleeve 18 in an appropriate direction with respect to thefloating sleeve 16, forcing the depthadjustment lock tabs 24 over the respectivedepth adjustment ridges 38 until thedepth adjustment indicator 20 points to a desireddepth adjustment index 22. In one embodiment, depthadjustment sleeve slots 44 are provided to facilitate deflection of the depthadjustment lock tabs 24 as they are respectively forced over the respectivedepth adjustment ridges 38 during a change to a differentdepth adjustment index 22. -
FIG. 4 is a cross-sectional view taken along lines 2-2 ofFIG. 1 with thescrew driving mechanism 30 of the impact driverscrew driving device 10 in a screw driving position. In the screw driving position, thescrew bit 26 rotates with thedrive shaft 12 and is released from driving engagement with thedrive shaft 12 when thescrew driving mechanism 30 is in a clutched position, as will be explained below with reference toFIG. 5 . Thedrive end 14 of thedrive shaft 12 extends through acentral passage 48 in ahollow clutch sleeve 46. A top of thecentral passage 48 extends inwardly to form a hollowclutch sleeve stop 50 sized to permit thedrive end 14 of thedrive shaft 12 to pass through, but not permit asocket end 52 of thedrive shaft 12 to pass through. A plurality of radial bores 54 through thesocket end 52 of thedrive shaft 12 respectively house a clutch bearing 56. Theclutch bearings 56 are described in detail in Applicant's abovereferenced published co-pendingUnited States patent application number 15/344,807, filed on November 7, 2016 radial bores 54 spaced 120° apart on a radial plane. A flat inner end of therespective clutch bearings 56 engage flats on thehexagonal screw bit 26 in the drive position of thescrew driving mechanism 30, so that thescrew bit 26 rotates with thescrew driving mechanism 30. Therespective clutch bearings 56 collectively disengage from thescrew bit 26 when thescrew driving device 10 is in the clutched position, so that thescrew bit 26 no longer rotates with thedrive shaft 12. Aclutch spring 58 is captured between a clutchspring retainer clip 60, held in a clutch springretainer clip groove 61 on thedrive shaft 12, and a top end of thehollow clutch sleeve 46. Theclutch spring 58 constantly urges thehollow clutch sleeve 46 to the drive position of thescrew driving device 10. A doughnut-shaped magnet 62 is received in amagnet socket 64 in the lower end of thedepth control sleeve 18. Themagnet 62 magnetically attracts a steel screw (not shown) placed on thescrew bit 26 so that the screw remains on thescrew bit 26 until the screw is driven by the impact driverscrew driving device 10. - The
socket end 52 of thedrive shaft 12 has ascrew bit socket 66 which receives and retains thescrew bit 26. As explained above, thescrew bit socket 66 is pierced by the plurality of radial bores 54 (only one is shown in the crosssection). Theradial bores 54 respectively receive a one of theclutch bearings 56 that respectively engage the flats on thehexagonal screw bit 26 when thescrew driving mechanism 30 is in the drive position shown. Thehollow clutch sleeve 46 has a hollowclutch sleeve groove 68 sized to receive a rounded outer end of therespective clutch bearings 56 when thescrew driving mechanism 30 is in the clutched position, so that theclutch bearings 56 disengage thescrew bit 26 but remain captured in the respectiveradial bores 54. A ball bearing 70 friction fit in anaxial bore 72 in an upper end of thescrew bit socket 66 supports a top end of thescrew bit 26 to permit thescrew bit 26 to remain stationary while thedrive shaft 12 rotates freely when thescrew driving device 10 is in the clutched position. Acirclip 73 captured in aradial groove 74 in the end of thescrew bit socket 66 engagesnotches 76 in thescrew bit 26 to removably retain thescrew bit 26 in thescrew bit socket 66. -
FIG. 5 is a cross-sectional view of thescrew driving device 10 shown in the clutched position in which thescrew bit 26 is released from driving engagement with the respectiveclutch bearings 56 so that ascrew 78 is no longer driven by thescrew driving mechanism 30. As the screw is driven into awork surface 80, the bottom end of thedepth control sleeve 18 contacts thework surface 80 and thedrive shaft 12 slides downward through thecentral passage 48 of the hollowclutch sleeve 46 as thescrew 78 is driven into thework surface 80 until the respective radial bores 54 align with theclutch sleeve groove 68 in the hollowclutch sleeve 46 and the respectiveclutch bearings 56 are forced outwardly into theclutch sleeve groove 68 by pressure exerted by thescrew bit 26 as it engages the drivenscrew 78. Once the respectiveclutch bearings 56 enter the hollowclutch sleeve groove 68, they are no longer in contact with the respective flats on thescrew bit 26 and thescrew driving mechanism 30 is in the clutched position. Thus, even though thedrive shaft 12 may continue to be rotated by the impact driver, thescrew bit 26 remains stationary and thescrew 78 is no longer driven. The depth to which the screw is driven into thework surface 80 is thereby controlled by thedepth adjustment index 22 selected by an operator. When downward pressure on thedrive shaft 12 is released by the operator of the impact driver, and thescrew driving device 10 is moved away from thework surface 80, theclutch spring 58 urges thedrive shaft 12 upwardly and thescrew driving device 10 returns to the drive position shown inFIG. 4 . As thescrew driving device 10 returns to the drive position, aninclined bottom surface 82 of theclutch sleeve groove 68 forces the respectiveclutch bearings 56 back into contact with respective flats of thescrew bit 26. -
FIG. 6 is a cross-sectional view of thescrew driving device 10 shown inFIG. 4 manually held in a reverse drive position typically used to extract a driven screw from a workpiece. In order to place thescrew driving device 10 in the reverse drive position, the floatingsleeve 16 is gripped by the operator and pulled upwardly against the bias of theclutch spring 58. In the reverse drive position, the respectiveclutch bearings 56 are below theclutch sleeve groove 68 in the hollowclutch sleeve 46 and engage respective flats on thescrew bit 26, so that rotation of thedrive shaft 12 in either direction rotates the screw bit in the same direction. This permits a drivenscrew 78 to be extracted from thework surface 80. Because thedepth adjustment mechanism 11 rotates independently of thescrew driving mechanism 30, the operator can hold the impact driverscrew driving device 10 in the reverse drive position while extracting a screw for as long as necessary. This more can also be used to drive a screw deeper into thework surface 80, if desired. - The embodiments of the invention described above are intended to be exemplary only. The scope of the invention is therefore intended to be limited solely by the claims.
Claims (10)
- An impact driver screw driving device with depth adjustment, comprising:a screw driving mechanism that retains a screw bit for driving screws into a work surface;a floating sleeve (16) that surrounds the screw driving mechanism;a floating sleeve spring (28) that provides a constant bias between an upper end of the floating sleeve (16) and an upper end of a hollow clutch sleeve (46) of the screw driving mechanism;a depth control threaded sleeve (18) connected to a bottom end of the floating sleeve (16), the depth control threaded sleeve (18) having a bottom end with a passage through which the screw bit (26) extends; and a clutch spring (58) that constantly urges the screw driving mechanism to a drive position characterised in that the floating sleeve (16) comprises a plurality of depth adjustment indexes (22) and the depth control threaded sleeve comprises a depth adjustment indicator (20) that is manually displaceable by rotation of the depth control threaded sleeve (18) on the floating sleeve (16) to move the depth adjustment indicator (20) from one depth adjustment index to another.
- The impact driver screw driving device with depth adjustment as claimed in claim 1, wherein the screw driving mechanism comprises a drive shaft (14) with a socket end received in a hollow clutch sleeve (46) and the clutch spring (58) being captured between a clutch spring retainer clip (60) received in a clutch spring (58) retainer clip groove (61) on the drive shaft (14) and a top of the hollow clutch sleeve (46).
- The impact driver screw driving device with depth adjustment as claimed in 2, wherein the socket end of the drive shaft (14) receives and retains the screw bit (26).
- The impact driver screw driving device with depth adjustment as claimed in one of claims 1 to 3, wherein the floating sleeve spring (28) is retained in a top of the floating sleeve (16) by a spring retainer washer (32) and a washer retainer clip (34) is received in a retainer clip groove (35) in the upper end of the floating sleeve (16).
- The impact driver screw driving device with depth adjustment as claimed in one of the aforementioned claims, wherein the floating sleeve (16) comprises a depth adjustment notch (38) for each depth adjustment index, the respective depth adjustment notches (38) being interleaved by respective depth adjustment ridges (44).
- The impact driver screw driving device with depth adjustment as claimed in claim 5 wherein the depth control threaded sleeve (18) further comprises a plurality of depth adjustment lock tabs (24) that respectively engage a one of the depth adjustment notches (38) in the floating sleeve (16).
- The impact driver screw driving device with depth adjustment as claimed in claim 6 wherein the depth control threaded sleeve (18) further comprises a slot (44) between each of the depth adjustment lock tabs (24) to facilitate movement of the respective depth adjustment lock tabs (24) over the respective depth adjustment ridges (38).
- The impact driver screw driving device with depth adjustment as claimed in one of the aforementioned claims, wherein the floating sleeve (16) spring is retained in a top of the floating sleeve (16) by a spring retainer washer (32) and a washer retainer clip (34) received in a retainer clip groove (35) in an upper end of the floating sleeve (16).
- The impact driver screw driving device with depth adjustment as claimed in one of the aforementioned claims, wherein the screw driving mechanism comprises a drive shaft (14) with a socket end received in the hollow clutch sleeve (46), the socket end of the drive shaft (14) receiving and retaining the screw bit (26).
- The impact driver screw driving device with depth adjustment as claimed in claim 9, wherein the clutch spring (58) is captured between a clutch spring retainer clip (60) received in a clutch spring retainer clip groove (61) in the drive shaft (14) and a top of the hollow clutch sleeve (46).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA3027891A CA3027891C (en) | 2018-12-18 | 2018-12-18 | Impact driver screw driving device with depth adjustment |
Publications (2)
Publication Number | Publication Date |
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EP3670084A1 EP3670084A1 (en) | 2020-06-24 |
EP3670084B1 true EP3670084B1 (en) | 2022-08-31 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19212461.8A Active EP3670084B1 (en) | 2018-12-18 | 2019-11-29 | Impact driver screw driving device with depth adjustment |
Country Status (2)
Country | Link |
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EP (1) | EP3670084B1 (en) |
CA (1) | CA3027891C (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2940488A (en) * | 1959-08-17 | 1960-06-14 | Black & Decker Mfg Co | Depth gauge for power-operated screwdriver, nut-runner, and the like |
US5996452A (en) * | 1998-10-13 | 1999-12-07 | Chiang; Shu Chi | Chuck device for power tool |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3610749A1 (en) * | 1986-03-29 | 1987-10-01 | Helfer & Co Kg | POWER DRIVING SCREW HEAD |
DE202012105081U1 (en) * | 2012-12-28 | 2013-03-27 | Wen Hung Chiang | Fastener holder for power-driven hand tool |
CA2831764C (en) * | 2013-11-04 | 2016-02-16 | Jacques Rajotte | Screw driving device with adjustable countersink depth |
US9764452B2 (en) * | 2015-06-27 | 2017-09-19 | Kevin Scott Koch | Device and method for fastener element retention and installation |
US10821579B2 (en) | 2016-11-07 | 2020-11-03 | Jacques Rajotte | Screw driving device for use with an impact driver |
-
2018
- 2018-12-18 CA CA3027891A patent/CA3027891C/en active Active
-
2019
- 2019-11-29 EP EP19212461.8A patent/EP3670084B1/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2940488A (en) * | 1959-08-17 | 1960-06-14 | Black & Decker Mfg Co | Depth gauge for power-operated screwdriver, nut-runner, and the like |
US5996452A (en) * | 1998-10-13 | 1999-12-07 | Chiang; Shu Chi | Chuck device for power tool |
Also Published As
Publication number | Publication date |
---|---|
EP3670084A1 (en) | 2020-06-24 |
CA3027891C (en) | 2020-09-15 |
CA3027891A1 (en) | 2020-06-18 |
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