DE4131110A1 - Short-threaded screw fastener for wood and composite material - has threaded lower end of shaft with double grip profile in head for securing tool - Google Patents

Short-threaded screw fastener for wood and composite material - has threaded lower end of shaft with double grip profile in head for securing tool

Info

Publication number
DE4131110A1
DE4131110A1 DE19914131110 DE4131110A DE4131110A1 DE 4131110 A1 DE4131110 A1 DE 4131110A1 DE 19914131110 DE19914131110 DE 19914131110 DE 4131110 A DE4131110 A DE 4131110A DE 4131110 A1 DE4131110 A1 DE 4131110A1
Authority
DE
Germany
Prior art keywords
short
head
screw
wood
threaded
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Withdrawn
Application number
DE19914131110
Other languages
German (de)
Inventor
Benno Heinzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19914131110 priority Critical patent/DE4131110A1/en
Publication of DE4131110A1 publication Critical patent/DE4131110A1/en
Withdrawn legal-status Critical Current

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
    • 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
    • B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat 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
    • 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
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

The fastener (1) has a countersunk head with two grip profiles for the forked tool and with the threaded section extending from the tip partway up the shaft. A smooth, thinner section between the thread and the head provides support without increasing resistance. The fastener cuts through knot holes in wood without undue increase in resistance and secures into composite boards. The double profile grip head enables large torques to be applied by the screw-driving tool (2). USE/ADVANTAGE - Short-threaded screw fastener for wood and composite material with no head damage during fitting, less manual force required for fitting.

Description

Schraube, welche im Senkkopf ausgespart ist, ein Abrutschen des Schraubendrehers ausschließt, bei Überdrehen der Schraube einen festen Sitz zu verzeichnen hat und entsprechend leichter in jedes Material eindringt. Holzsenkkopfschraube Fig. 1.Screw, which is recessed in the countersunk head, prevents the screwdriver from slipping, has a tight fit when the screw is overtightened and therefore penetrates any material more easily. Countersunk wood screw Fig. 1.

Stand der TechnikState of the art

Die handelsüblichen Holzschrauben, welche so gehalten sind, daß die Gewindegänge bis zum Senkkopf hinaufreichen oder halbgewindige Schrauben mit glattem gleichstarkem Schaft versehen sind.The commercially available wood screws, which are held so that the threads go up to the countersunk head or semi-threaded Screws are provided with a smooth shaft of equal strength.

Problemproblem

Alle im Handel befindlichen Holzschrauben haben den Nachteil, daß die Schraube mittels eines Schraubenziehers durch einen enormen Aufdruck und Drehung ins Material eindringt. Die Länge des Schraubgewindes entscheidet meistens, ob die Stoßdrehkraft ausreicht, ohne Schädigung des Schraubendrehers oder Kopfes der Schraube zu Ende geführt werden kann. Alle nicht zu Ende geschraubten Schrauben müssen durch unbeschädigte Schrauben meistens ausgewechselt werden, wenn der vorstehende Kopf nicht herausragen soll.All wood screws on the market have the disadvantage that the screw by means of a screwdriver through a enormous imprint and rotation penetrates into the material. The length of the screw thread usually decides whether the impact torque is sufficient without damaging the screwdriver or the head Screw can be completed. All not screwed to the end Screws usually have to be undamaged be replaced if the protruding head is not should protrude.

Allgemeine MängelGeneral shortcomings

Die Aussparungen in den Köpfen der Schlitz- und Kreuzschraube sind nicht genügend.The recesses in the heads of the slotted and Phillips screw are not enough.

Gleiche Stärke des Gewindes und Schaftes.Same thread and shank thickness.

Durch Druckdrehung Gewindeabriß bei kurzfaserigem Material (Hartfaser).Thread break with short-fiber material due to pressure rotation (Hardboard).

Eine durchgedrehte Industrieschraube mit Schaft und Gewinde fällt bei kurzfaserigem Material und gleicher Stärke des Schaftes und Gewindes heraus.A screwed industrial screw with shaft and thread falls with short-fiber material and the same strength of the Shaft and thread out.

Claims (6)

1. Die Kurzgewindeschraube wird dadurch gekennzeichnet, daß der Senkkopf zwei Aussparungen aufweist, welche so gehalten sind, daß durch normales Drehen das Gewinde ins Material eindringt.1. The short thread screw is characterized in that the countersunk head has two recesses, which are held so that the thread penetrates the material by normal turning. 2. Daß bei geringem Kraftaufwand mit dem Schraubendreher, welcher gabelartig gestaltet ist und seinen Drehpunkt weit nach außen verlagert, somit optimal für einen geringen Kraftaufwand geeignet ist.2. That with little effort with the screwdriver, which is fork-shaped and its pivot point is wide relocated to the outside, making it ideal for low effort suitable is. 3. Das Kurzgewinde an der Schraubenspitze und der dünner gehaltene Schaft wird so gehalten, daß die im Holz befindlichen Äste ein Durchdringen der Kurzgewindeschraube ermöglicht.3. The short thread at the screw tip and the thinner one Shank is held so that those in the wood Knots allow the short thread screw to penetrate. 4. Dadurch gekennzeichnet, daß in modernen Materialien (Hartfaserplatten) eine optimale Haltbarkeit gewährleistet wird.4. Characterized by that in modern materials (hardboard) an optimal Durability is guaranteed. 5. Im Möbelbau vorwiegend verwendete Materialien, welche mit Scharnierbändern ausgestattet sind und durch Schrauben gehalten werden, bleiben in der kurzfaserigen Hartfaserplatte in dem Material entsprechend fest.5. Mainly used materials in furniture construction, which with Hinge straps are fitted and held by screws remain in the short-fiber hardboard according to the material. 6. Das Kurzgewinde hat den Vorteil, daß einmal eingeschraubte Schrauben nach Eindringen in das Material durch den dünner gehaltenen Schaft eine Art Sperre entsteht.6. The short thread has the advantage that once screwed in Screw after penetrating the material through the thinner held shaft creates a kind of lock.
DE19914131110 1991-09-12 1991-09-12 Short-threaded screw fastener for wood and composite material - has threaded lower end of shaft with double grip profile in head for securing tool Withdrawn DE4131110A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914131110 DE4131110A1 (en) 1991-09-12 1991-09-12 Short-threaded screw fastener for wood and composite material - has threaded lower end of shaft with double grip profile in head for securing tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914131110 DE4131110A1 (en) 1991-09-12 1991-09-12 Short-threaded screw fastener for wood and composite material - has threaded lower end of shaft with double grip profile in head for securing tool

Publications (1)

Publication Number Publication Date
DE4131110A1 true DE4131110A1 (en) 1993-03-18

Family

ID=6440923

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914131110 Withdrawn DE4131110A1 (en) 1991-09-12 1991-09-12 Short-threaded screw fastener for wood and composite material - has threaded lower end of shaft with double grip profile in head for securing tool

Country Status (1)

Country Link
DE (1) DE4131110A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027812A1 (en) * 1996-01-31 1997-08-07 Axel Kirsch Screw for insertion into a bone and tool for removing this screw
EP1110510A1 (en) * 1999-12-23 2001-06-27 Karl Storz GmbH & Co. KG Screw driven non-centrally

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997027812A1 (en) * 1996-01-31 1997-08-07 Axel Kirsch Screw for insertion into a bone and tool for removing this screw
EP1110510A1 (en) * 1999-12-23 2001-06-27 Karl Storz GmbH & Co. KG Screw driven non-centrally
US7261716B2 (en) 1999-12-23 2007-08-28 Karl Storz Gmbh & Co. Kg Biodegradable interference screw and tool for attaching a transplant to a bone

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