AT365314B - SCREW, preferably sheet metal screw with a countersunk head - Google Patents

SCREW, preferably sheet metal screw with a countersunk head

Info

Publication number
AT365314B
AT365314B AT0806879A AT806879A AT365314B AT 365314 B AT365314 B AT 365314B AT 0806879 A AT0806879 A AT 0806879A AT 806879 A AT806879 A AT 806879A AT 365314 B AT365314 B AT 365314B
Authority
AT
Austria
Prior art keywords
screw
sheet metal
countersunk head
preferably sheet
head
Prior art date
Application number
AT0806879A
Other languages
German (de)
Other versions
ATA806879A (en
Inventor
Theodor Ing Nitschko
Helmut Ing Bauer
Original Assignee
Tyrolia Freizeitgeraete
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 Tyrolia Freizeitgeraete filed Critical Tyrolia Freizeitgeraete
Priority to AT0806879A priority Critical patent/AT365314B/en
Publication of ATA806879A publication Critical patent/ATA806879A/en
Application granted granted Critical
Publication of AT365314B publication Critical patent/AT365314B/en

Links

Classifications

    • 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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/023—Locking of screws, bolts or nuts in which the locking takes place after screwing down by driving a conic or wedge-shaped expander through the threaded element

Description

  

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 Hineintreiben bewirkt ein Auseinanderspreizen der Teile des Schaftes --lf-- der Senkkopfschrau-   be-l-mit   dem Gewinde --la--, wodurch der Schaft --lf-- eine etwa zylindrische Gestalt annimmt. 



   Mit einem Schraubenzieher wird die Senkkopfschraube-l-nun durch eine 90 bis   180 ige   Drehung endgültig im Ski fixiert. Die Senkkopfschraube-l-wirkt nun ähnlich wie ein Gewindebohrer. Durch das Auseinanderspreizen des Schaftes --lf-- mit den Gewindeteilen wird das Material rund um die Bohrung verdichtet und eine erheblich erhöhte Ausreissfestigung gegenüber herkömmlich eingeschraubten Schrauben erreicht. 



   Trotzdem kann die Schraube jederzeit aus dem Ski aus-und wieder eingeschraubt werden. 



  Ihre Haltkraft entspricht allerdings dann nur mehr der von herkömmlichen zylindrischen oder konischen Schrauben. 



   Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel eingeschränkt. Es ist ohne weiteres denkbar, die erfindungsgemässe Schraube in vielen handwerklichen Bereichen einzusetzen. 



  So könnten beispielsweise mit erfindungsgemässen Schrauben Türschilder auf Türen befestigt werden. 



   Selbstverständlich kann diese Schraube überall dort verwendet werden, wo Holz, Kunststoff und Blech miteinander verschraubt werden sollen.



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 Driving into it causes the parts of the shaft --lf-- of the countersunk screw -l-with the thread --la-- to spread apart, causing the shaft --lf-- to assume an approximately cylindrical shape.



   The countersunk screw-l-is now finally fixed in the ski with a screwdriver by turning it 90 to 180 degrees. The countersunk screw-l-now acts similar to a tap. By spreading the shaft apart --lf-- with the threaded parts, the material around the bore is compressed and a considerably higher pull-out strength compared to conventionally screwed-in screws is achieved.



   Nevertheless, the screw can be unscrewed from the ski and screwed in again at any time.



  However, their holding power then only corresponds to that of conventional cylindrical or conical screws.



   The invention is not restricted to the exemplary embodiment shown. It is readily conceivable to use the screw according to the invention in many areas of craftsmanship.



  For example, door plates could be attached to doors with screws according to the invention.



   Of course, this screw can be used wherever wood, plastic and sheet metal are to be screwed together.

Claims (1)

PATENTANSPRUCH : Schraube, vorzugsweise Blechschraube mit einem Senkkopf, insbesondere zum Befestigen von Skibindungsteilen auf einem Ski, wobei zumindest der Schaft der Schraube in Richtung seiner Längsachse zweigeteilt ist, welche Teile mit einem Spreizstift auseinandergespreizt werden, dadurch gekennzeichnet, dass die Teile des in an sich bekannter Weise kegelstumpfförmig gestalteten Schaftes (If) durch einen keilförmigen Spalt (1c) getrennt sind, welcher im Kopf (le) der Schraube (1) in eine zylindrische Bohrung (1b) übergeht, in die der Spreizstift (2) eingesetzt wird, wobei der Spreizstift (2) in der Bereitschaftsstellung zum Einschrauben der Schraube (1) aus dem Kopf (le) derselben nach aussen ragt.   PATENT CLAIM: Screw, preferably sheet metal screw with a countersunk head, in particular for attaching ski binding parts on a ski, at least the shaft of the screw being divided in two in the direction of its longitudinal axis, which parts are spread apart with a spreader pin, characterized in that the parts of the in a manner known per se frustoconical shaft (If) are separated by a wedge-shaped gap (1c) which merges in the head (le) of the screw (1) into a cylindrical bore (1b) into which the expanding pin (2) is inserted, the expanding pin ( 2) in the ready position for screwing in the screw (1) protrudes outwards from the head (le).
AT0806879A 1979-12-21 1979-12-21 SCREW, preferably sheet metal screw with a countersunk head AT365314B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT0806879A AT365314B (en) 1979-12-21 1979-12-21 SCREW, preferably sheet metal screw with a countersunk head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0806879A AT365314B (en) 1979-12-21 1979-12-21 SCREW, preferably sheet metal screw with a countersunk head

Publications (2)

Publication Number Publication Date
ATA806879A ATA806879A (en) 1981-05-15
AT365314B true AT365314B (en) 1982-01-11

Family

ID=3602228

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0806879A AT365314B (en) 1979-12-21 1979-12-21 SCREW, preferably sheet metal screw with a countersunk head

Country Status (1)

Country Link
AT (1) AT365314B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012074717A1 (en) * 2010-12-02 2012-06-07 Harris Corporation Press-set threaded screw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012074717A1 (en) * 2010-12-02 2012-06-07 Harris Corporation Press-set threaded screw
US8430616B2 (en) 2010-12-02 2013-04-30 Harris Corporation Press-set threaded screws and 2 stroke air tool for installation

Also Published As

Publication number Publication date
ATA806879A (en) 1981-05-15

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee