WO2014019907A2 - Torsionsstab - Google Patents
Torsionsstab Download PDFInfo
- Publication number
- WO2014019907A2 WO2014019907A2 PCT/EP2013/065595 EP2013065595W WO2014019907A2 WO 2014019907 A2 WO2014019907 A2 WO 2014019907A2 EP 2013065595 W EP2013065595 W EP 2013065595W WO 2014019907 A2 WO2014019907 A2 WO 2014019907A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- region
- torsion
- shank
- coupling
- torsion bar
- Prior art date
Links
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
- B25B23/0021—Prolongations interposed between handle 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
- B25B13/00—Spanners; Wrenches
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/06—Spanners; Wrenches with rigid jaws of socket type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
-
- 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
- B25B31/00—Hand tools for applying fasteners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25G—HANDLES FOR HAND IMPLEMENTS
- B25G1/00—Handle constructions
- B25G1/10—Handle constructions characterised by material or shape
- B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners
Definitions
- the invention relates to a torsion bar for limiting torque according to the preamble of claim 1.
- a torsion bar is equipped with a shaft having a first end portion and a longitudinally opposite second end portion, a first coupling for rotationally fixed connection of the shaft to the output spindle of a striking screwdriver, wherein the first coupling is arranged on the first end region of the shank, and a second coupling for non-rotatably connecting the shank with a threaded element, in particular with the mother of an expansion anchor, wherein the second coupling is arranged on the second end region of the shank, wherein the shank has at least one tapered torsion region in that the shank has a smaller cross-section than in at least one of the end regions.
- a generic torsion bar is known for example from GB1521461 A. It forms a torsion spring between the output spindle of the impact wrench and the tightening screw, which can limit the torque applied to the screw.
- the object of the invention is to provide a particularly reliable torsion bar with little effort.
- a torsion bar according to the invention is characterized in that the shaft has a plastic encapsulation at least in the tapered torsion area.
- the invention is based on the recognition that the tapered torsion region of the shaft of the torsion bar deforms markedly during normal operation. If a paint finish were to be used as corrosion protection in this area, There is a risk of spalling, since a typically less ductile, but well adhering to the substrate paint the movement of the ground can not follow. This is where the invention begins and provides for plastic coating instead of painting.
- Kunststoffumspritzung can be formed in a particularly simple manner with relatively large wall thickness, relatively ductile and / or with relatively low substrate adhesion. A failure of the protective layer can thus be counteracted particularly efficiently. Due to the comparatively large wall thickness can be particularly well protected against mechanical impact with a plastic extrusion, the relatively sensitive tapered region.
- the first coupling may have a polygonal structure, preferably an internal polygon, for example a square.
- the second coupling may have a polygonal structure, preferably an internal polygon, for example a hexagon.
- the longitudinal direction can be understood in particular to be the direction of the longitudinal axis of the torsion bar and / or the shaft.
- the threaded element has a thread, which in particular runs coaxially to the torsion bar.
- the threaded element may have an external thread or an internal thread and be a screw or a nut.
- the threaded element may be the nut of an expansion anchor, i. in particular to the mother of an anchor with an anchor bolt and an expansion sleeve, wherein the anchor bolt has an expansion cone for spreading the expansion sleeve and a thread on which the nut is arranged.
- the shank has exactly one contiguous tapered torsion area, whereby the production cost can be reduced. Due to the locally reduced cross section, the torsion of the shaft takes place at least predominantly in the torsion region. Preferably, the shaft has a smaller cross section in the tapered torsion region than in the two end regions.
- a plastic extrusion coating is understood to mean the product of an extrusion coating process.
- the plastic encapsulation is limited to a central region of the shaft, in particular to the tapered torsion region.
- the plastic extrusion is used specifically to protect the most sensitive zone. At least the relatively cross-sectionally large second end portion on which the threaded member is arranged, however, remains free, so that use is possible even in confined spaces on the threaded member, and so that this end can be manually secured during the application. So it is given a particularly large reliability with particularly high reliability.
- the plastic encapsulation consists of a thermoplastic. This is favorable in terms of the production cost.
- the shank is preferably made of metal, in particular of steel.
- the plastic encapsulation consists of an elastomer.
- an elastomer can absorb the deformation of the shaft particularly well. Therefore, according to this embodiment, a particularly good resistance is given even with a relatively strong adhesion of the plastic extrusion on the shaft.
- the shaft may have a circular cross-section in the torsion region and / or in at least one end region, preferably in both end regions, which may be advantageous in terms of the production outlay.
- the minimum diameter of the shaft in the torsion region is preferably at least a factor of 2, preferably at least a factor of 3 smaller than the minimum diameter of the shaft in the end regions.
- the tapered torsion region preferably has a region of constant shank cross section. Transition regions may adjoin this region, preferably on both sides, in which the shank cross section becomes larger, preferably continuously, towards the respective end region. It is particularly preferred that the plastic extrusion extends at least over the region of constant shaft cross section. The plastic extrusion can also extend to the transition areas. The transition areas may or may not be considered parts of the torsion area.
- the area of constant cross-section preferably has a circular or square
- Cross section and can have the following dimensions:
- the invention also relates to an arrangement consisting of a torsion bar according to one of the preceding claims, an impact wrench and an expansion anchor with a nut, wherein the torsion bar rotatably coupled to its first clutch with an output spindle of the impact wrench and at its second coupling with the mother of the expansion anchor is.
- FIG. 1 shows a perspective view of a torsion bar according to the invention
- FIG. 2 shows a longitudinal sectional view of the torsion bar from FIG. 1 with a striking screwdriver and an expansion anchor.
- the torsion bar has a shank 10 with a first end region 11 and a second end region 12 opposite in the longitudinal direction, that is to say in the direction of the longitudinal axis 19 of the shank 10.
- At the first end portion 11 is on the front side of the shaft 10 designed as mecanicvierkant first clutch 15 is provided, via which the shaft 10 rotatably coupled to the output spindle 51 of a only in Fig.
- a second coupling 16 designed as an internal hexagon is provided on the front side of the shaft 10, via which the shaft 10 can be coupled in a rotationally fixed manner to a threaded element 62 shown only in FIG.
- the torsion bar can serve for setting an expansion anchor 60 shown in FIG. 2, which has an anchor bolt 61 and an expansion sleeve 64 surrounding the anchor bolt 61, wherein on the anchor bolt 61 on the one hand an expansion cone 63 for expanding the expansion sleeve 64 and on the other hand a thread 67th is arranged, on which the trained as a nut threaded member 62 is seated.
- the shank 10 has a torsion region 13, in which the shank 10 has a smaller cross-section compared with the end regions 11 and 12.
- this torsion area 13 acts as a torsion spring, which can absorb the forces of impact wrench 50.
- the shaft 10 is surrounded by a sleeve-shaped plastic extrusion 90 which protects the torsion region 13.
- the plastic extrusion 90 is limited to the smaller cross section torsion region 13 and does not extend into the end regions 11 and 12, which are bare or e.g. can be burnished.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Vehicle Body Suspensions (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Ropes Or Cables (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015524720A JP2015524751A (ja) | 2012-07-31 | 2013-07-24 | トーションバー |
RU2015106835A RU2015106835A (ru) | 2012-07-31 | 2013-07-24 | Торсионный стержень |
EP13741732.5A EP2879841A2 (de) | 2012-07-31 | 2013-07-24 | Torsionsstab |
CA2880510A CA2880510A1 (en) | 2012-07-31 | 2013-07-24 | Torsion bar |
CN201380039607.4A CN104582905A (zh) | 2012-07-31 | 2013-07-24 | 扭力棒 |
US14/418,000 US20150343618A1 (en) | 2012-07-31 | 2013-07-24 | Torsion Bar |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012213432.8 | 2012-07-31 | ||
DE102012213432.8A DE102012213432A1 (de) | 2012-07-31 | 2012-07-31 | Torsionsstab |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014019907A2 true WO2014019907A2 (de) | 2014-02-06 |
WO2014019907A3 WO2014019907A3 (de) | 2015-02-19 |
Family
ID=48875034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/065595 WO2014019907A2 (de) | 2012-07-31 | 2013-07-24 | Torsionsstab |
Country Status (9)
Country | Link |
---|---|
US (1) | US20150343618A1 (de) |
EP (1) | EP2879841A2 (de) |
JP (1) | JP2015524751A (de) |
CN (1) | CN104582905A (de) |
CA (1) | CA2880510A1 (de) |
DE (1) | DE102012213432A1 (de) |
RU (1) | RU2015106835A (de) |
TW (1) | TW201404546A (de) |
WO (1) | WO2014019907A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3205452A1 (de) * | 2016-02-09 | 2017-08-16 | Ansaldo Energia IP UK Limited | Bolzenverstellungsvorrichtung |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10427277B2 (en) | 2011-04-05 | 2019-10-01 | Ingersoll-Rand Company | Impact wrench having dynamically tuned drive components and method thereof |
US9469017B2 (en) | 2014-01-31 | 2016-10-18 | Ingersoll-Rand Company | One-piece power socket for an impact tool |
US9463557B2 (en) * | 2014-01-31 | 2016-10-11 | Ingersoll-Rand Company | Power socket for an impact tool |
DE102013200227A1 (de) | 2013-01-10 | 2014-07-10 | Hilti Aktiengesellschaft | Torsionsstab |
JP6397317B2 (ja) * | 2014-11-20 | 2018-09-26 | 株式会社マキタ | インパクト工具 |
CN109202797B (zh) * | 2018-09-29 | 2024-01-02 | 国电重庆风电开发有限公司 | 有限空间内螺栓快速拆装构件及风机叶片螺栓拆装方法 |
USD1000236S1 (en) * | 2021-01-11 | 2023-10-03 | Diversitech Corporation | Driver for reversible socket |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1521461A (en) | 1974-10-20 | 1978-08-16 | Irvator Ab | Method of fastening a screw threaded fastening element |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4004476A (en) * | 1975-07-21 | 1977-01-25 | Devrou Kenneth L | Socket wrench extension grip |
US5123313A (en) * | 1990-12-21 | 1992-06-23 | Ab Momento | Torsion socket |
CN2278644Y (zh) * | 1996-10-11 | 1998-04-15 | 王志宏 | 自行车曲柄结构 |
CN2276862Y (zh) * | 1996-10-16 | 1998-03-25 | 林晓燕 | 新型的十字型套筒扳手 |
JP2000094355A (ja) * | 1998-09-22 | 2000-04-04 | Toyota Motor Corp | 塑性域締付部位用トルクレンチ |
US6363820B1 (en) * | 2000-12-14 | 2002-04-02 | Chieh-Jen Hsiao | Hand tool for driving a fastener about an axis |
US6581697B1 (en) * | 2002-01-28 | 2003-06-24 | Chicago Pneumatic Tool Company | Power impact tool torque apparatus |
US7082864B1 (en) * | 2005-04-21 | 2006-08-01 | International Paper Company | Tool with protective sheath |
JP2007301658A (ja) * | 2006-05-10 | 2007-11-22 | Koto Sangyo Kk | 連結用工具、これを用いたインパクトレンチ |
CN101306523A (zh) * | 2007-05-18 | 2008-11-19 | 谢智庆 | 扭力套筒连接装置 |
DE102007041574A1 (de) * | 2007-09-01 | 2009-03-05 | Wera-Werk Hermann Werner Gmbh & Co. Kg | Schraubendreherbit mit beidendseitigem Schraubeingriffsprofil |
US20090211408A1 (en) * | 2008-02-27 | 2009-08-27 | Chia Hui Peng | Spark plug socket wrench |
EP2098336A3 (de) * | 2008-03-05 | 2011-10-05 | Felo-Werkzeugfabrik Holland-Letz GmbH | Halter für Schraubendreher-Einsätze |
US20120042754A1 (en) * | 2010-08-17 | 2012-02-23 | Timmy Chen | Socket Assembly Having Insulating Effect |
US20120074659A1 (en) * | 2010-09-29 | 2012-03-29 | Henry H. Hamilton | Tool assembly and related methods |
DE102010038210A1 (de) * | 2010-10-15 | 2012-04-19 | Wera-Werk Hermann Werner Gmbh & Co. Kg | Drehmomentübertragungsvorrichtung zur Verwendung mit einem Drehschlagschrauber |
-
2012
- 2012-07-31 DE DE102012213432.8A patent/DE102012213432A1/de not_active Withdrawn
-
2013
- 2013-05-27 TW TW102118597A patent/TW201404546A/zh unknown
- 2013-07-24 CA CA2880510A patent/CA2880510A1/en not_active Abandoned
- 2013-07-24 JP JP2015524720A patent/JP2015524751A/ja active Pending
- 2013-07-24 CN CN201380039607.4A patent/CN104582905A/zh active Pending
- 2013-07-24 RU RU2015106835A patent/RU2015106835A/ru not_active Application Discontinuation
- 2013-07-24 WO PCT/EP2013/065595 patent/WO2014019907A2/de active Application Filing
- 2013-07-24 US US14/418,000 patent/US20150343618A1/en not_active Abandoned
- 2013-07-24 EP EP13741732.5A patent/EP2879841A2/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1521461A (en) | 1974-10-20 | 1978-08-16 | Irvator Ab | Method of fastening a screw threaded fastening element |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3205452A1 (de) * | 2016-02-09 | 2017-08-16 | Ansaldo Energia IP UK Limited | Bolzenverstellungsvorrichtung |
Also Published As
Publication number | Publication date |
---|---|
CA2880510A1 (en) | 2014-02-06 |
EP2879841A2 (de) | 2015-06-10 |
WO2014019907A3 (de) | 2015-02-19 |
JP2015524751A (ja) | 2015-08-27 |
CN104582905A (zh) | 2015-04-29 |
DE102012213432A1 (de) | 2014-05-15 |
TW201404546A (zh) | 2014-02-01 |
RU2015106835A (ru) | 2016-09-20 |
US20150343618A1 (en) | 2015-12-03 |
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