FI119198B - Skruv som brister vid skaftet - Google Patents

Skruv som brister vid skaftet Download PDF

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Publication number
FI119198B
FI119198B FI20055228A FI20055228A FI119198B FI 119198 B FI119198 B FI 119198B FI 20055228 A FI20055228 A FI 20055228A FI 20055228 A FI20055228 A FI 20055228A FI 119198 B FI119198 B FI 119198B
Authority
FI
Finland
Prior art keywords
screw
base
threaded
torque
sleeve
Prior art date
Application number
FI20055228A
Other languages
English (en)
Finnish (fi)
Other versions
FI20055228A (sv
FI20055228A0 (sv
Inventor
Peter Kario
Jaakko Pekkinen
Original Assignee
Ensto Sekko Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ensto Sekko Oy filed Critical Ensto Sekko Oy
Priority to FI20055228A priority Critical patent/FI119198B/sv
Publication of FI20055228A0 publication Critical patent/FI20055228A0/sv
Priority to EP06113189A priority patent/EP1724473A3/en
Publication of FI20055228A publication Critical patent/FI20055228A/sv
Application granted granted Critical
Publication of FI119198B publication Critical patent/FI119198B/sv

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0061Specially shaped nuts or heads of bolts or screws for rotations by a tool with grooves, notches or splines on the external peripheral surface designed for tools engaging in radial direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Claims (4)

1. En vid skaftet brytbar skruv (1) bestäende av ett huvudparti (2), ett till huvudpar-tiet anslutande skaft (3) med ett gängelement (4), som kan fästas vid ett underlags 5 (20) gänghäl (21) och som är indelat i flera efter varandra liggande gängpartier (4a, 4b, 4c), av vilka varje efterliggande gängparti (4a, 4b, 4c) är inbördes avskilda med ett brytställe (5a, 5b, 5c), och vilken skruv (1) uppvisar en vridholk (10), vars ytter-sida (11) är formad för att gripas av ett vridverktyg, kännetecknad därav, att pä skruvens (1) huvudpartis (2) och ätminstone ett gängpartis (4c, 4b) omräde finns 10 en gripformning (6), att vridholkens (10) innersida (12) uppvisar kontraformningar (13) för gripformningarna (6) för att överföra vridmomentet frän vridholken (10) tili skruvens huvudparti (2) och ätminstone ett gängparti (1) i närheten av underlagets (20) yta (20a), och att vid vridning av skruven (1) förmedlad av vridholken (10) är vridholken (10) anordnad att röra sig i skruvens (1) längdaxels (L) riktning relativt 15 skruven (1) för att hälla det pä skruven (1) verkande vridmomentets verkningspunkt i närheten av underlagets (20) yta (20a).
2. Skruv enligt patentkravet 1, kännetecknad därav, att alla brytningsställen (5a, 5b, 5c) uppvisar samma eller mot huvudpartiet (2) avtagande vridningshällfasthet. 20
3. Skruv enligt patentkravet 1 eller 2, kännetecknad därav, att vridholkens utsida • · v.: (11) är i genomskärning sexkantig. • a • a a • «a • a • · :.1··
4. Skruv enligt nägot av föregäende patentkrav 1 - 3 , kännetecknad därav, att 25 gripformningen (6) bestär av en eller flera i skruvens (1) längdriktning anordnade :.· · skäror eller slitsar, som sträcker sig tili huvudets (2) och ätminstone ett gängpartis (4c) omräde. • a a a a • · · • · ·1· • a • · • aa • · • · · • aa a a • aa a a a a a·· a a a a a • a a • aa aa a a a · a··
FI20055228A 2005-05-16 2005-05-16 Skruv som brister vid skaftet FI119198B (sv)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20055228A FI119198B (sv) 2005-05-16 2005-05-16 Skruv som brister vid skaftet
EP06113189A EP1724473A3 (en) 2005-05-16 2006-04-27 Treaded bolt with a break-off points shank

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20055228A FI119198B (sv) 2005-05-16 2005-05-16 Skruv som brister vid skaftet
FI20055228 2005-05-16

Publications (3)

Publication Number Publication Date
FI20055228A0 FI20055228A0 (sv) 2005-05-16
FI20055228A FI20055228A (sv) 2006-11-17
FI119198B true FI119198B (sv) 2008-08-29

Family

ID=34630164

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20055228A FI119198B (sv) 2005-05-16 2005-05-16 Skruv som brister vid skaftet

Country Status (2)

Country Link
EP (1) EP1724473A3 (sv)
FI (1) FI119198B (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127655B (sv) 2017-09-08 2018-11-30 Ensto Oy Skärande skruv

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126539A1 (de) * 1991-08-10 1993-02-11 Dieter Ammer Set aus schraube und werkzeug
GB9404979D0 (en) * 1994-03-15 1994-04-27 Sicame Electrical Dev Ltd Improvements relating to clamping screws
GB0202710D0 (en) * 2002-02-06 2002-03-20 Tyco Electronics Ltd Uk Fastener
GB0323007D0 (en) * 2003-10-02 2003-11-05 Sicame Electrical Dev Ltd Clamping bolt for electrical conductor connectors with insulating material thereon

Also Published As

Publication number Publication date
EP1724473A2 (en) 2006-11-22
FI20055228A (sv) 2006-11-17
EP1724473A3 (en) 2011-12-28
FI20055228A0 (sv) 2005-05-16

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