EP3061572A1 - Screwdriver bit positioning structure - Google Patents
Screwdriver bit positioning structure Download PDFInfo
- Publication number
- EP3061572A1 EP3061572A1 EP15166544.5A EP15166544A EP3061572A1 EP 3061572 A1 EP3061572 A1 EP 3061572A1 EP 15166544 A EP15166544 A EP 15166544A EP 3061572 A1 EP3061572 A1 EP 3061572A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screwdriver bit
- positioning sleeve
- positioning
- hook portion
- sleeve
- 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.)
- Withdrawn
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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
- 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 positioning sleeve 30 of the present invention is made of a plastic material.
- the hook portion 31 which is integrally formed with the positioning sleeve 30 is fitted on the screwdriver bit 22.
- the outer oblique surface 311 of the hook portion 31 is in contact with the outer edge of the limit ring 23 to press the positioning sleeve 30 so that the hook portion 31 is elastically expanded outward to pass the limit ring 23, as shown in FIG. 7 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
A screwdriver bit positioning structure includes a connecting rod (20) having a screwdriver bit (22). A front end of the screwdriver bit (22) is provided with a positioning sleeve (30). The screwdriver bit is provided with a limit ring (23) and a slide section (24). The positioning sleeve is a hollow sleeve. One end of the positioning sleeve (30) is provided with a hook portion (31). Another end of the positioning sleeve is provided with a magnetic member (33) having a through hole. The screwdriver bit (22) is inserted through the positioning sleeve (30). The hook portion (30) is adapted to engage with the limit ring (23) and slidable on the slide section (24). The screwdriver bit (22) is exposed out of the positioning sleeve (30). The positioning sleeve (30) is movable to adjust its position for attracting different sizes of screws and controlling the depth of screwing the screws. The present invention decreases the number of parts, can be assembled easily, and reduces the cost.
Description
- The present invention relates to a screwdriver bit positioning structure, and more particularly to a screwdriver bit positioning structure which has simple components and can be assembled easily.
- As shown in
FIG. 1 to FIG. 4 , a conventional connecting rod is provided with aslide sleeve 13. A front inner hole of theslide sleeve 13 is provided with amagnetic member 18 having a throughhole 19. The inner wall of theslide sleeve 13 is formed with a front positioningoblique trough 14 and a rear positioningoblique trough 15 according to the route position of the connectingrod 10. The rear end of the connectingrod 10 is adrive section 11. The front end of the connectingrod 10 is formed with a toolbit connecting hole 101. The connectingrod 10 is formed with agroove 102 to receive a C-shapedelastic member 16 therein. After theslide sleeve 13 is fitted on the connectingrod 10 and moved to the front and rear positioningoblique troughs elastic member 16 is engaged to limit the movement range of theslide sleeve 13. The connectingrod 10 is provided with arecess 121 having asteel ball 17. Theslide sleeve 13 is formed with anannular groove 103 to accommodate thesteel ball 17. When theslide sleeve 13 is pushed rearward, the C-shapedelastic member 16 is positioned in the front positioningoblique trough 14 and thesteel ball 17 is accommodated in theannular groove 13. At this moment, thescrewdriver bit 12 can be withdrawn for replacement. Referring toFIG. 2 , when theslide sleeve 13 is pushed forward, the C-shapedelastic member 16 is positioned in the rear positioningoblique trough 15. Thescrewdriver bit 12 can be inserted to therecess 2 with themagnetic member 18 to attract thescrew 1 steadily. The aforesaid structure has the following shortcomings: - 1. For the
slide sleeve 13 to be positioned forward or rearward, it is necessary to lengthen the length of theslide sleeve 13, and the inner wall of theslide sleeve 13 has to be formed with theannular groove 103 and the front and rear positioningoblique troughs elastic member 16 and thesteel ball 17 are also required. The manufacture cost is increased accordingly. - 2. When the C-shaped
elastic member 16 of theslide sleeve 13 is located in the rear positioningoblique trough 15, thescrewdriver bit 12 extends out of theslide sleeve 13 in a fixed length. When therecess 4 of abig screw 3 is deeper, as shown inFIG. 3 , thescrewdriver bit 12 is unable to mate with therecess 4 of thebig screw 3 totally although thebig screw 3 is attracted by themagnetic member 18. When therecess 6 of asmall screw 5 is too shallow, as shown inFIG. 4 , thesmall screw 5 is not attached to themagnetic member 18 totally to result in that thesmall screw 5 is oblique. It is not convenient for use. - 3. The
slide sleeve 13 is a cylindrical sleeve, which cannot be replaced arbitrarily and is only applied to the full-size connecting rod 10. - In view of this, it is necessary to lower the cost and make the positioning structure of the screwdriver bit being manufactured easily and used conveniently. Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems.
- The primary object of the present invention is to provide a screwdriver bit positioning structure. The screwdriver bit positioning structure comprises a positioning sleeve having a hook portion which is adapted to engage with a screwdriver bit and able to slide on a slide section so as to adjust the engagement position relative to a screw. The hook portion is formed with split grooves, so that the hook portion is elastic and deformable. The present invention can be applied to different connecting rods, decreases the number of parts, and reduces the cost.
-
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FIG. 1 is a sectional view of a conventional connecting rod; -
FIG. 2 is a sectional view showing the conventional connecting rod to attract a screw; -
FIG. 3 is a sectional view showing the conventional connecting rod to attract a big small screw, not engaged fully; -
FIG. 4 is a sectional view showing the conventional connecting rod to attract a small screw in an oblique state; -
FIG. 5 is an exploded view of the present invention; -
FIG. 6 is a perspective view of the present invention; -
FIG. 7 is a schematic view of the present invention showing that the hook portion is elastically expanded; -
FIG. 8 is a schematic view showing the present invention to attract a big screw; and -
FIG. 9 is a schematic view showing the present invention to attract a small screw. - Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.
- Referring to
FIG. 5 through FIG. 7 , the present invention discloses a screwdriver bit positioning structure. The screwdriver bit positioning structure comprises a connectingrod 20. One end of the connectingrod 20 is adrive end 21, and another end of the connectingrod 20 is ascrewdriver bit 22. A front end of thescrewdriver bit 22 is provided with apositioning sleeve 30. Thescrewdriver bit 22 is provided with alimit ring 23 and aslide section 24 formed between thelimit ring 23 and thedrive end 21. Thepositioning sleeve 30 is a hollow sleeve. One end of thepositioning sleeve 30 is provided with ahook portion 31 which is adapted to engage with thelimit ring 23 and able to slide on theslide section 24. Thepositioning sleeve 30 is provided with at least twosplit grooves 301 to form the elastic and deformable claw-like hook portion 31. Thehook portion 31 has an outeroblique surface 311 at an outer side thereof and an inneroblique surface 312 at an inner side thereof. Another end of thepositioning sleeve 30 is provided with amagnetic member 33 having a throughhole 34. An inner wall of thepositioning sleeve 30 is formed with a protrudingportion 32. The protrudingportion 32 includes at least three protrusions which are spaced and arranged annularly. Aslide trough 303 is formed between one end of the protrudingportion 32 and thehook portion 31. Another end of the protrudingportion 32 is adapted to hold against themagnetic member 33. Thescrewdriver bit 22 is inserted through thepositioning sleeve 30 and the throughhole 34. Thehook portion 31 is slidable on theslide section 24. Thescrewdriver bit 22 is exposed out of thepositioning sleeve 30. According to the aforesaid structure, thepositioning sleeve 30 is movable to adjust its position for attracting different sizes of screws and controlling the depth of screwing the screws. The present invention decreases the number of parts, can be assembled easily, and reduces the cost. - The assembly of the present is described in detail hereinafter. Referring to
FIG. 5 to FIG. 7 , thepositioning sleeve 30 of the present invention is made of a plastic material. Thehook portion 31 which is integrally formed with thepositioning sleeve 30 is fitted on thescrewdriver bit 22. When thehook portion 31 passes over thelimit ring 23 having a larger diameter, theouter oblique surface 311 of thehook portion 31 is in contact with the outer edge of thelimit ring 23 to press thepositioning sleeve 30 so that thehook portion 31 is elastically expanded outward to pass thelimit ring 23, as shown inFIG. 7 . After passing thelimit ring 23, thehook portion 31 is restored for thehook portion 31 to engage with thelimit ring 23, such that thepositioning sleeve 30 can limit thescrewdriver bit 22 and is movable on theslide section 24 to adjust its position. Thelimit ring 23 is confined within theslide trough 303, such that thepositioning sleeve 30 is more stable when it is slid. On the contrary, when the user wants to take out or replace thepositioning sleeve 30, theinner oblique surface 312 of thehook portion 31 is in contact with the outer edge of thelimit ring 23 and then thehook portion 31 is elastically expanded outward by applying a force to pass thelimit ring 23 so that thepositioning sleeve 30 can disengage from thescrewdriver bit 22. The present invention can be produced easily and has a simple structure. The connectingrod 20 can be replaced withdifferent positioning sleeves 30, and thepositioning sleeve 30 can be applied to different connectingrods 20. - Referring to
FIG. 5 ,FIG. 8 andFIG. 9 , when themagnetic member 33 is used to attract a screw, thedrive end 21 of the connectingrod 20 is driven by an electric tool so that thescrewdriver bit 22 is turned synchronously. When the screw is against a workpiece, thescrewdriver bit 22 is inserted to the recess of the screw for the screw to be screwed to the workpiece. When screwing, theend edge 302 of thepositioning sleeve 30 will gradually approach the surface of the workpiece. When theend edge 302 of thepositioning sleeve 30 is near the surface of the workpiece, the user can know that the screw is locked to an appropriate depth so as to stop screwing. The screw can be locked properly. Referring toFIG. 8 , the screws in different sizes have the recesses in different depths. When themagnetic member 33 is used to attract abig screw 3 having adeep recess 4, thepositioning sleeve 30 is moved rearward for thescrewdriver bit 22 to be exposed longer so as to mate with therecess 4. Referring toFIG. 9 , when themagnetic member 33 is used to attract asmall screw 5 having ashallow recess 6, thepositioning sleeve 30 is moved forward for thepositioning sleeve 30 to attract the small screw totally. In such a way, thescrewdriver bit 22 extending out of thepositioning sleeve 30 is not in a fixed length to influence themagnetic member 33 to attract thesmall screw 5. Thereby, thepositioning sleeve 30 can control the depth of screwing to steady the positioning effect. - It is noted that the
hook portion 31 of thepositioning sleeve 30 can be used to engage with or disengage from the connectingrod 20 through the property of the plastic material. Thus, thepositioning sleeve 30 can be replaced and reused, and are applied to connectingrods 20 in different lengths (such as, 25mm, 50mm, 75mm), and are also applied to different types ofscrewdriver bits 22. - Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.
Claims (5)
- A screwdriver bit positioning structure, comprising a connecting rod (20), one end of the connecting rod being a drive end (21), another end of the connecting rod being a screwdriver bit (22), a front end of the screwdriver bit (22) being provided with a positioning sleeve (30), characterized by:the screwdriver bit (22) being provided with a limit ring (23) and a slide section (24) formed between the limit ring (23) and the drive end (21), the positioning sleeve (30) being a hollow sleeve, one end of the positioning sleeve (30) being provided with a hook portion (31) adapted to engage with the limit ring (23) and able to slide on the slide section (24), the hook portion (31) being formed with at least two split grooves (301), another end of the positioning sleeve (30) being provided with a magnetic member (33) having a through hole (34), an inner wall of the positioning sleeve (30) being formed with a protruding portion (32) arranged annularly, a slide trough (303) being formed between one end of the protruding portion (32) and the hook portion (31), another end of the protruding portion (32) being adapted to hold against the magnetic member (33), the screwdriver bit (22) being inserted through the positioning sleeve (30) and the through hole (34) of the magnetic member (33), the hook portion (31) being slidable on the slide section (24), the screwdriver bit (22) being exposed out of the positioning sleeve (30).
- The screwdriver bit positioning structure as claimed in claim 1, wherein the hook portion (31) has an outer oblique surface at an outer side thereof.
- The screwdriver bit positioning structure as claimed in claim 2, wherein the hook portion (31) has an inner oblique surface at an inner side thereof.
- The screwdriver bit positioning structure as claimed in claim 1, wherein the positioning sleeve (30) is made of a plastic material.
- The screwdriver bit positioning structure as claimed in claim 1, wherein the protruding portion (32) includes at least three protrusions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW104202910U TWM501916U (en) | 2015-02-25 | 2015-02-25 | Improved positioning structure of screw head |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3061572A1 true EP3061572A1 (en) | 2016-08-31 |
Family
ID=53936105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15166544.5A Withdrawn EP3061572A1 (en) | 2015-02-25 | 2015-05-06 | Screwdriver bit positioning structure |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3061572A1 (en) |
TW (1) | TWM501916U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3470176A1 (en) * | 2017-06-30 | 2019-04-17 | Black & Decker Inc. | Tool bits with floating magnet sleeves |
USD885155S1 (en) | 2017-06-30 | 2020-05-26 | Black & Decker Inc. | Tool bit for driving threaded fasteners |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI254660B (en) * | 2004-09-06 | 2006-05-11 | Wen-Hai Jang | Additional magnetic sleeve for screwdriver head with looseproof |
US20080047075A1 (en) * | 2006-08-28 | 2008-02-28 | Chang Wun-Hai | Positioning structure for a sliding magnetic sheath of a screwdriver |
EP2837468A2 (en) * | 2013-08-15 | 2015-02-18 | Black & Decker Inc. | Bit holder with floating magnet sleeve |
-
2015
- 2015-02-25 TW TW104202910U patent/TWM501916U/en not_active IP Right Cessation
- 2015-05-06 EP EP15166544.5A patent/EP3061572A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI254660B (en) * | 2004-09-06 | 2006-05-11 | Wen-Hai Jang | Additional magnetic sleeve for screwdriver head with looseproof |
US20080047075A1 (en) * | 2006-08-28 | 2008-02-28 | Chang Wun-Hai | Positioning structure for a sliding magnetic sheath of a screwdriver |
EP2837468A2 (en) * | 2013-08-15 | 2015-02-18 | Black & Decker Inc. | Bit holder with floating magnet sleeve |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3470176A1 (en) * | 2017-06-30 | 2019-04-17 | Black & Decker Inc. | Tool bits with floating magnet sleeves |
USD885155S1 (en) | 2017-06-30 | 2020-05-26 | Black & Decker Inc. | Tool bit for driving threaded fasteners |
US10792793B2 (en) | 2017-06-30 | 2020-10-06 | Black & Decker Inc. | Tool bits with floating magnet sleeves |
Also Published As
Publication number | Publication date |
---|---|
TWM501916U (en) | 2015-06-01 |
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18W | Application withdrawn |
Effective date: 20161109 |