WO1999047821A1 - Nuevo sistema de sujecion y apriete de tornillos - Google Patents
Nuevo sistema de sujecion y apriete de tornillos Download PDFInfo
- Publication number
- WO1999047821A1 WO1999047821A1 PCT/ES1999/000062 ES9900062W WO9947821A1 WO 1999047821 A1 WO1999047821 A1 WO 1999047821A1 ES 9900062 W ES9900062 W ES 9900062W WO 9947821 A1 WO9947821 A1 WO 9947821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- screwdriver
- lugs
- mortise
- tightening
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims 1
- 241000246358 Thymus Species 0.000 description 3
- 235000007303 Thymus vulgaris Nutrition 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000001585 thymus vulgaris Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/001—Screwdrivers characterised by material or shape of the tool bit
- B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
- F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
- F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
Definitions
- the present invention relates to a new fastening and tightening system for screws whereby a quick and secure coupling between screw and screwdriver or tightening tool is achieved, with hardly any possibility of the screw disengaging from the tip of the screwdriver or tool of tightening, as well as a better transmission of the tightening torque without the need for additional forces to maintain said coupling, thus facilitating the work of connection with screws, especially those carried out in the automatic assembly with electric screwdrivers with regulation of the tightening torque, in robotic industrial installations as well as in specific manual applications.
- An object of the present invention is a screw head provided with a tapered configuration mortise and circular section having one or more studs projecting towards the longitudinal axis of the screw, the circular walls of the mortise forming an angle of conicity with with respect to the longitudinal axis of the screw and forming the walls of the taper angles of conicity with respect to said longitudinal axis.
- the specific tapered configuration of the mortise in the screw head, in line with that of the tip of the screwdriver or tightening tool, object of the present invention has significant advantages over the systems known at present, such as: a ) a socket produced by the wedge effect of the lugs which allows a safe, gradual pressure coupling between screw and screwdriver or tightening tool; b) a greater contact surface between screw head and screwdriver tip or tightening tool, which results in a better distribution of mechanical stresses and less wear on both the screw head and the screwdriver or tool tip Of tightening; c) a saving in the cost of the material used to manufacture the screws compared to the case of known "philips" or "pozidriv”screws; d) achieve total security in the tightening or loosening of the screw without the need for additional forces, avoiding errors in the tightening torque; e) greater performance and service life of stamping tools and screwdrivers or tightening tools; and f) facilitating bolted connections in hard-
- Still another object of the present invention is a stamp, specifically designed, for cold stamping formation with screw head press and a die for the stamping of screwdriver punches and tips or tightening tool objects of The present invention.
- the mortise made in the head of the screw is of circular cross-section having a number of lugs preferably between two and six, projecting towards the longitudinal axis of the screw.
- the section of said mortise progressively decreases longitudinally towards the inside of the screw, also decreasing the thickness of the lugs.
- the mortise sections located between two lugs have a circular shape with a predetermined taper angle, this angle having a constant value independent of the number and thickness of the lugs, the front faces of said lugs forming an angle with respect to the longitudinal axis of the screw, which angle varies in relation to the nominal diameter of the screw, the lateral faces forming an angle with respect to the longitudinal axis of the screw.
- US-2 445 525 discloses a coupling system between screw and screwdriver, the screw head having a frustoconical mortise with wings of equal cross section separated from each other by triangular cross-sectional spaces, the tip of the screwdriver being attachable to said screw head , said mortise penetrates the threaded body of the screw thereby affecting the mechanical strength and useful life thereof, on the other hand no determined values are established for the different conicity angles of the mortise unlike in the present invention US Pat.
- the fastening and tightening system of screws object of the present invention refers to a screw head provided with a shredded configuration shroud in the direction of the longitudinal axis of the screw and whose section is circular in shape with a number 4
- lugs preferably between two and six, and preferably of identical size to each other, projecting towards said longitudinal axis of the screw, decreasing said cross section gradually in the direction towards the inside of the screw and in proportion to the conicity angles of the circular section and of the front and side faces of the lugs.
- Said lugs act to, by contact with the tip of a screwdriver or tightening tool, transmit a torque; Due to the greater contact surface provided by said lugs, the mechanical tensions in the screw head are considerably lower than in the prior art screws. Likewise, due to the punching practiced in the screw head of the invention, a conicity is obtained that favors, due to the wedge effect, a quick and safe coupling between screw and screwdriver or tightening tool, being hardly necessary to exert any pressure in the direction of Longitudinal axis of the screw as usual in the case of known screws, while, due to the safety in the coupling, the wear of the screw head and the tip of the screwdriver or tightening tool is considerably reduced, avoiding errors in achieving the predetermined tightening torque.
- the Applicant has performed the corresponding mechanical tests for different numbers of lugs, for different angles of conicity of the lugs and for different angles ⁇ of conicity of the circular section, which angles are related to the depth of the mortise made in the head of the screw. Likewise, all these parameters have referred to different outside diameters of the screw head and their corresponding nominal screw diameters.
- the conicity angle of The lugs are between 5 and 12.5 degrees, preferably between 7.5 and 1 1.5 degrees, the angle of taper ⁇ of the circular section of the mortise is between 20 and 30 degrees, preferably between 23 and 23.5 degrees, the angle A of conicity of the bottom of the mortise is between 25 and 35 degrees, preferably between 28 and 29 degrees, the angle C formed by the side faces of two adjacent studs is between 15 and 35 degrees, preferably between 30 and 30.5 degrees, the distance D is between 0.5 mm and 7 mm, preferably between 0.65 mm and 6.5 mm, the distance d is between 0.8 mm and 9 mm, preferably between 0, 9 mm and 8.2 mm, the distance e is between 0.2 mm and 4 mm, preferably between 0.27 mm and
- Another object of the present invention is a screwdriver tip or tightening tool having a configuration corresponding to the screw head mortise of the invention.
- the recesses in said tip correspond to the threads of the thyme head shroud and the fins on said tip correspond to the intermediate zones between each two threads of the thyme head.
- Another object of the present invention is a stamping punch for the formation of the shroud in the head. of the screw, determined by the configuration of the mortise made in the head of the thyme of the present invention
- Figure 1 shows a plan view of the mortise (1) in the screw head of the invention, for a preferred embodiment comprising three lugs (2) with corresponding intermediate spaces or circular sections (3)
- Figures 2, 3 and 4 show cross sections of the screw of the invention of Figure 1, showing the conicity angles ⁇ , ⁇ , A and C
- Figure 5 shows a tip (4) of a screwdriver or tightening tool associated with the screw head of the invention of Figure 1
- Figure 6 shows two cross sections of the tip (4) of the screwdriver or tightening tool with its fins (5);
- Figures 7 and 8 show a pattern for forming the mortise of the screw head of Figure 1;
- Figure 9 shows a plan view of the mortise (1) in the screw head of the invention, for a preferred embodiment comprising four lugs (2),
- Figures 10, 11 and 12 show cross sections of the screw head of Figure 9, showing the conicity angles, ⁇ , A and C;
- Figure 13 shows a tip (4) of a screwdriver or tightening tool associated with the screw head of the invention of Figure 9;
- Figures 15 and 16 show a pattern for forming the mortise on the screw head of the invention of Figure 9.
- a preferred embodiment of the invention corresponds to the case in which the mortise (1) made in the screw head has three bolts (2).
- the angle of conicity of the lugs will be between 7.5 and 7.75 degrees, 9.5 and 9.75 degrees and between 10.5 and 10.75 degrees depending on the type of stud
- the angle of conicity of the circular sections ⁇ will be between 23 and 23.5 degrees
- the angle A between 28 and 29 degrees.
- the width of the bolts decreases in the direction of the longitudinal axis of the screw proportionally to the value of the tightening torque at each point of the radius and whose value (e varies from 0.40 / 0.42 to 3.05 / 3.09, depending on type ).
- the angle C is between 30 and 30.5 degrees.
- the distance D varies between 0.65 / 0.68 to 5.85 / 5.89 mm depending on the type.
- the diameter d varies between 0.9 / 0.95 and 8 / 8.1 mm, depending on the type.
- FIG. 9 to 16 Another preferred embodiment of the invention, as shown in Figures 9 to 16, corresponds to the case in which the mortise (1) made in the screw head has four bolts (2).
- the angles ce, ⁇ , A and C maintain the same values as in the previous case, with three bolts (2).
- the width of the bolts decreases in the direction of the longitudinal axis of the screw proportionally to the value of the tightening torque in Each point of the radius.
- the value e varies between 0.35 / 0.37 and 2.7 / 2.74 mm, depending on the type.
- the distance D varies between 0.7 / 0.73 and 6 / 6.04 mm, depending on the type.
- the diameter d varies between 0.9 / 0.95 and 8 / 8.10 mm, depending on the type.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Connection Of Plates (AREA)
- Gripping On Spindles (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL13272099A IL132720A (en) | 1998-03-18 | 1999-03-15 | System for holding and tightening screws |
CA002291766A CA2291766C (en) | 1998-03-18 | 1999-03-15 | New system for holding and tightening screws |
BR9906323-9A BR9906323A (pt) | 1998-03-18 | 1999-03-15 | Sistema de sujeição e aperto de parafusos |
DE69909388T DE69909388T2 (de) | 1998-03-18 | 1999-03-15 | System zum haltern und anziehen einer schraube |
US09/423,947 US6453781B1 (en) | 1998-03-18 | 1999-03-15 | System for holding and tightening screws |
AT99908970T ATE244832T1 (de) | 1998-03-18 | 1999-03-15 | System zum haltern und anziehen einer schraube |
JP54659999A JP2001527630A (ja) | 1998-03-18 | 1999-03-15 | ねじを保持し締付けるための新システム |
EP99908970A EP0984175B1 (en) | 1998-03-18 | 1999-03-15 | System for holding and tightening screws |
KR1019997010667A KR20010012706A (ko) | 1998-03-18 | 1999-03-15 | 스크류를 지지하고 체결하기 위한 신규 시스템 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ESPCT/ES98/00067 | 1998-03-18 | ||
PCT/ES1998/000067 WO1999047820A1 (es) | 1998-03-18 | 1998-03-18 | Conjunto de tornillo y destornillador mutuamente autoagarrables |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999047821A1 true WO1999047821A1 (es) | 1999-09-23 |
Family
ID=8302408
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1998/000067 WO1999047820A1 (es) | 1998-03-18 | 1998-03-18 | Conjunto de tornillo y destornillador mutuamente autoagarrables |
PCT/ES1999/000062 WO1999047821A1 (es) | 1998-03-18 | 1999-03-15 | Nuevo sistema de sujecion y apriete de tornillos |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1998/000067 WO1999047820A1 (es) | 1998-03-18 | 1998-03-18 | Conjunto de tornillo y destornillador mutuamente autoagarrables |
Country Status (19)
Country | Link |
---|---|
US (1) | US6453781B1 (es) |
EP (1) | EP0984175B1 (es) |
JP (1) | JP2001527630A (es) |
KR (1) | KR20010012706A (es) |
CN (1) | CN1165690C (es) |
AR (1) | AR014739A1 (es) |
AT (1) | ATE244832T1 (es) |
BR (1) | BR9906323A (es) |
CA (1) | CA2291766C (es) |
CZ (1) | CZ293780B6 (es) |
DE (1) | DE69909388T2 (es) |
ES (1) | ES2201680T3 (es) |
IL (1) | IL132720A (es) |
MA (1) | MA25675A1 (es) |
PL (1) | PL193126B1 (es) |
PT (1) | PT984175E (es) |
RU (1) | RU2239105C2 (es) |
TR (1) | TR199902822T1 (es) |
WO (2) | WO1999047820A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102039571A (zh) * | 2010-08-31 | 2011-05-04 | 成都春江科技有限公司 | 侧入插固式扭力螺丝刀 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2390127B (en) * | 2002-05-10 | 2005-06-15 | Uniscrew Ltd | Integrated fastening system |
ATE468492T1 (de) * | 2002-05-27 | 2010-06-15 | Osg Corp | Struktur zum verdrehen eines gewindeelements |
US6908126B2 (en) * | 2002-10-15 | 2005-06-21 | Sargent Manufacturing Company | Enhanced security catch assembly for retaining a handle on a spindle |
JP4031418B2 (ja) * | 2003-09-12 | 2008-01-09 | 株式会社スズキ螺子製作所 | ねじおよびねじ締め付け用ドライバー |
KR101234369B1 (ko) * | 2003-11-14 | 2013-02-18 | 카츠유키 토츠 | 강도 안정형 나사와 드라이버 비트의 조합체 |
TWI278379B (en) * | 2005-04-06 | 2007-04-11 | Kwantex Res Inc | Screw, punch, and screw driver's head |
US7111531B1 (en) * | 2005-04-11 | 2006-09-26 | Kabushiki Kaisha Suzuki Rashi Seisakusho | Screw and screwdriver |
US20070207009A1 (en) * | 2006-03-06 | 2007-09-06 | Teng-Hung Lin | Screw with a recess in the head of the screw |
EP1939463A1 (en) | 2006-12-29 | 2008-07-02 | Fong Prean Industrial Co., Ltd. | Screw with recess in the head of the screw |
KR101872544B1 (ko) * | 2010-07-07 | 2018-06-28 | 인파스텍 인텔렉츄얼 프로퍼티즈 피티이. 엘티디. | 토크 전달 드라이버 |
CN103185055A (zh) * | 2011-12-29 | 2013-07-03 | 鸿富锦精密工业(深圳)有限公司 | 紧固件、与其配合的驱动件及成型该紧固件的冲子 |
TW201420284A (zh) * | 2013-09-06 | 2014-06-01 | Great Metal Production Co Ltd E | 螺絲起子驅動部的結構與製法 |
DE102013113401A1 (de) | 2013-12-03 | 2015-06-03 | Adolf Würth GmbH & Co. KG | Schraube und Antriebselement mit Fase |
KR20170097040A (ko) * | 2014-12-17 | 2017-08-25 | 리써치 엔지니어링 앤 매뉴팩쳐링, 인크. | 리세스형 헤드 체결구 및 드라이버 결합체 |
EP3115153A1 (fr) * | 2015-07-07 | 2017-01-11 | IPP Industries Sarl | Outil de vissage et vis correspondante |
TWI705200B (zh) * | 2019-11-19 | 2020-09-21 | 林英模 | 緊固件 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2285462A (en) * | 1939-05-26 | 1942-06-09 | Holo Krome Screw Corp | Method of and apparatus for making socketed screws |
US3187790A (en) * | 1959-05-18 | 1965-06-08 | Hi Shear Rivet Tool Company | Screw and screw driver coupling |
GB1006509A (en) * | 1961-05-26 | 1965-10-06 | Gkn Screws Fasteners Ltd | Improvements in or relating to screw threaded fasteners and drivers for use therewith |
GB1486246A (en) * | 1973-08-21 | 1977-09-21 | Bulten Kanthal Ab | Method of and a tool for manufacturing a conical spline drive socket |
US4464957A (en) * | 1980-07-23 | 1984-08-14 | Gkn Screws & Fasteners Limited | Fastener and driver combination |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2129440A (en) * | 1937-07-10 | 1938-09-06 | Illinois Tool Works | Screw |
US2445525A (en) * | 1945-02-19 | 1948-07-20 | Moses L Gulden | Fastening device |
US2592462A (en) * | 1951-09-11 | 1952-04-08 | Res Eng & Mfg | Recessed head fastener |
US3108623A (en) * | 1959-05-05 | 1963-10-29 | Phillips Screw Co | Tools for recessed head fasteners |
US5120173A (en) * | 1991-07-26 | 1992-06-09 | Phillips Screw Company | Screw head with slant rib |
-
1998
- 1998-03-18 WO PCT/ES1998/000067 patent/WO1999047820A1/es active Application Filing
-
1999
- 1999-03-15 JP JP54659999A patent/JP2001527630A/ja active Pending
- 1999-03-15 AT AT99908970T patent/ATE244832T1/de not_active IP Right Cessation
- 1999-03-15 BR BR9906323-9A patent/BR9906323A/pt not_active IP Right Cessation
- 1999-03-15 PL PL336884A patent/PL193126B1/pl not_active IP Right Cessation
- 1999-03-15 CZ CZ19994061A patent/CZ293780B6/cs not_active IP Right Cessation
- 1999-03-15 CN CNB998004545A patent/CN1165690C/zh not_active Expired - Fee Related
- 1999-03-15 PT PT99908970T patent/PT984175E/pt unknown
- 1999-03-15 RU RU99127340A patent/RU2239105C2/ru active
- 1999-03-15 DE DE69909388T patent/DE69909388T2/de not_active Expired - Fee Related
- 1999-03-15 ES ES99908970T patent/ES2201680T3/es not_active Expired - Lifetime
- 1999-03-15 CA CA002291766A patent/CA2291766C/en not_active Expired - Fee Related
- 1999-03-15 EP EP99908970A patent/EP0984175B1/en not_active Expired - Lifetime
- 1999-03-15 IL IL13272099A patent/IL132720A/en not_active IP Right Cessation
- 1999-03-15 TR TR1999/02822T patent/TR199902822T1/xx unknown
- 1999-03-15 KR KR1019997010667A patent/KR20010012706A/ko not_active Application Discontinuation
- 1999-03-15 WO PCT/ES1999/000062 patent/WO1999047821A1/es not_active Application Discontinuation
- 1999-03-15 US US09/423,947 patent/US6453781B1/en not_active Expired - Fee Related
- 1999-03-18 AR ARP990101173A patent/AR014739A1/es active IP Right Grant
- 1999-03-18 MA MA25502A patent/MA25675A1/fr unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2285462A (en) * | 1939-05-26 | 1942-06-09 | Holo Krome Screw Corp | Method of and apparatus for making socketed screws |
US3187790A (en) * | 1959-05-18 | 1965-06-08 | Hi Shear Rivet Tool Company | Screw and screw driver coupling |
GB1006509A (en) * | 1961-05-26 | 1965-10-06 | Gkn Screws Fasteners Ltd | Improvements in or relating to screw threaded fasteners and drivers for use therewith |
GB1486246A (en) * | 1973-08-21 | 1977-09-21 | Bulten Kanthal Ab | Method of and a tool for manufacturing a conical spline drive socket |
US4464957A (en) * | 1980-07-23 | 1984-08-14 | Gkn Screws & Fasteners Limited | Fastener and driver combination |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102039571A (zh) * | 2010-08-31 | 2011-05-04 | 成都春江科技有限公司 | 侧入插固式扭力螺丝刀 |
CN102039571B (zh) * | 2010-08-31 | 2012-07-18 | 成都春江科技有限公司 | 侧入插固式扭力螺丝刀 |
Also Published As
Publication number | Publication date |
---|---|
TR199902822T1 (xx) | 2000-06-21 |
IL132720A (en) | 2004-01-04 |
WO1999047820A1 (es) | 1999-09-23 |
CN1263586A (zh) | 2000-08-16 |
RU2239105C2 (ru) | 2004-10-27 |
ES2201680T3 (es) | 2004-03-16 |
DE69909388T2 (de) | 2004-07-22 |
CA2291766A1 (en) | 1999-09-23 |
JP2001527630A (ja) | 2001-12-25 |
DE69909388D1 (de) | 2003-08-14 |
PT984175E (pt) | 2003-11-28 |
PL193126B1 (pl) | 2007-01-31 |
EP0984175A1 (en) | 2000-03-08 |
CA2291766C (en) | 2005-07-26 |
BR9906323A (pt) | 2000-07-04 |
AR014739A1 (es) | 2001-03-28 |
IL132720A0 (en) | 2001-03-19 |
US6453781B1 (en) | 2002-09-24 |
CZ293780B6 (cs) | 2004-07-14 |
CN1165690C (zh) | 2004-09-08 |
ATE244832T1 (de) | 2003-07-15 |
MA25675A1 (fr) | 2003-04-01 |
KR20010012706A (ko) | 2001-02-26 |
EP0984175B1 (en) | 2003-07-09 |
CZ9904061A3 (cs) | 2001-03-14 |
PL336884A1 (en) | 2000-07-17 |
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