CH676872A5 - Screw with cylindrical head and threaded shank - has two opposite facing flat parts on head's periphery, and inner hexagon, with slot - Google Patents
Screw with cylindrical head and threaded shank - has two opposite facing flat parts on head's periphery, and inner hexagon, with slot Download PDFInfo
- Publication number
- CH676872A5 CH676872A5 CH211188A CH211188A CH676872A5 CH 676872 A5 CH676872 A5 CH 676872A5 CH 211188 A CH211188 A CH 211188A CH 211188 A CH211188 A CH 211188A CH 676872 A5 CH676872 A5 CH 676872A5
- Authority
- CH
- Switzerland
- Prior art keywords
- screw
- head
- slot
- flat parts
- flats
- Prior art date
Links
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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
- F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
Description
1 1
CH 676 872 A5 CH 676 872 A5
2 2nd
Beschreibung description
Die Erfindung betrifft eine Zylinderkopfschrau-be gemäss dem Oberbegriff des Patentanspruchs 1. The invention relates to a cylinder head screw according to the preamble of patent claim 1.
Bei herkömmlichen Schrauben dieser Art besteht vielfach das Problem, dass die innerhalb des Schraubenkopfs angeordneten Eingriffsflächen (lnnensechskant, Schlitz, Kreuzschlitz) für ein Drehwerkzeug infolge verschiedenster Einflüsse (Rost, Festsitzen, Manipulation mit ungeeigneten Werkzeugen etc.) beschädigt sein können und dadurch das (zerstörungsfreie) Lösen solcher Schrauben erheblich erschwert, wenn nicht sogar unmöglich wird. Dieses Problem soll nun durch die vorliegende Erfindung behoben werden. With conventional screws of this type, there is often the problem that the engagement surfaces arranged within the screw head (hexagon socket, slot, cross recess) for a turning tool can be damaged as a result of a wide variety of influences (rust, seizing, manipulation with unsuitable tools, etc.) and the (non-destructive ) Loosening such screws is considerably more difficult, if not impossible. This problem is now to be solved by the present invention.
Erfindungsgemäss ist dazu nach dem Kennzeichen von Patentanspruch 1 der Schraubenkopf an seinem Umfang mit zwei gegenüberliegenden Abflachungen zum Ansatz eines Drehwerkzeugs ausgestattet, Bevorzugte Ausgestaltungen und Weiterbildungen der erfindungsgemässen Zylinderkopfschraube sind in den abhängigen Ansprüchen beschrieben. According to the invention, the screw head is equipped on its circumference with two opposing flats for attaching a turning tool. Preferred refinements and developments of the cylinder head screw according to the invention are described in the dependent claims.
Im folgenden wird die Erfindung anhand der Zeichnung näher erläutert. Es zeigen: The invention is explained in more detail below with reference to the drawing. Show it:
Fig. 1 eine Schrägansicht eines Ausführungsbeispiels einer erfindungsgemässen Zylinderkopfschraube und Fig. 1 is an oblique view of an embodiment of an inventive cylinder head screw and
Fig. 2-4 Detailvarianten in schematischer Darstellung. Fig. 2-4 detailed variants in a schematic representation.
Die in Fig. 1 dargestellte Zylinderkopfschraube umfasst einen mit einem Gewinde 1 versehenen Schaft 2 und einen zylindrischen Schraubenkopf 3, der mit einem lnnensechskant 4 ausgestattet ist. Anstelle des Innensechskants kann gemäss Fig. 2 auch ein Schlitz 14 oder gemäss Fig. 3 ein Kreuzschlitz 24 vorgesehen sein. The cylinder head screw shown in FIG. 1 comprises a shaft 2 provided with a thread 1 and a cylindrical screw head 3 which is equipped with an internal hexagon 4. Instead of the hexagon socket, a slot 14 or a cross slot 24 according to FIG. 3 can also be provided according to FIG. 2.
Gemäss dem wesentlichsten Aspekt der Erfindung ist der zylindrische Schraubenkopf 3 an seinem Umfang 31 mit zwei sich gegenüberliegenden, parallelen ebenen Abftachungen 32 und 33 versehen, die als zusätzliche Eingriffsflächen für irgendein passendes Drehwerkzeug dienen. Der gegenseitige Abstand a der beiden Abflachungen 32 und 33 ist mit Vorzug auf die Schlüsselweite herkömmlicher genormter Gabelschlüssel abgestimmt, so dass die erfindungsgemässe Schraube z.B. auch mit solchen Gabelschlüsseln gedreht werden kann. According to the most important aspect of the invention, the cylindrical screw head 3 is provided on its circumference 31 with two opposing, parallel flat flats 32 and 33, which serve as additional engagement surfaces for any suitable turning tool. The mutual distance a between the two flats 32 and 33 is preferably matched to the width across flats of conventional standardized open-end wrenches, so that the screw according to the invention e.g. can also be rotated with such wrenches.
Die Abflachungen 32 und 33 können sich über die gesamte Höhe h des Schraubenkopfs 3 erstrecken oder vorzugsweise, gemäss Fig. 1, nur über einen Teil derselben, so dass ein teilzylindrischer Kragen oder Schulter 34 bestehen bleibt und damit die Auflagefläche des Schraubenkopfs 3 gegenüber herkömmlichen Zylinderkopfschrauben nicht reduziert wird. The flats 32 and 33 can extend over the entire height h of the screw head 3 or, preferably, according to FIG. 1, only over part of the same, so that a partially cylindrical collar or shoulder 34 remains and thus the contact surface of the screw head 3 compared to conventional cylinder head screws is not reduced.
Die beiden Abflachungen 32 und 33 sind im Falle einer Innensechskantschraube (Fig. 1) mit Vorzug parallel zu zwei gegenüberliegenden FläGhen 41 und 42 des Innensechskants 4 ausgerichtet. Im Falle einer Schlitzschraube (Fig. 2) verlaufen die Abflachungen vorzugsweise parallel zum Schlitz 14 und bei Kreuzschlitzschrauben (Fig. 3) können die In the case of a hexagon socket screw (FIG. 1), the two flats 32 and 33 are preferably aligned parallel to two opposite flanges 41 and 42 of the hexagon socket 4. In the case of a slotted screw (FIG. 2), the flats preferably run parallel to the slot 14 and, in the case of cross-head screws (FIG. 3), the
Abflachungen 32 und 33 parallel zu einem der beiden Schenkel des Kreuzschlitzes 24 ausgerichtet sein oder, gemäss einer weiteren Variante der Erfindung, um 45 Grad zu diesen versetzt (Fig. 4). Flattenings 32 and 33 can be aligned parallel to one of the two legs of the cross recess 24 or, according to a further variant of the invention, offset by 45 degrees to the latter (FIG. 4).
Es versteht sich, dass die erfindungsgemässe Zylinderkopfschraube hinsichtlich Schaft, Gewinde etc. alle erdenklichen Ausgestaltungen herkömmlicher Schrauben aufweisen kann. It goes without saying that the cylinder head screw according to the invention can have all conceivable configurations of conventional screws with regard to the shaft, thread, etc.
Die Vorteile der erfindungsgemässen Zylinderkopfschraube sind evident: The advantages of the cylinder head screw according to the invention are evident:
- Festsitzende, verrostete oder aus anderen Gründen beschädigte Schrauben können besser angepackt werden mit allen möglichen Werkzeugen wie Gabel- oder Rollgabelschlüsseln, Klemmzangen und anderen diversen Werkzeugen. - Stuck, rusted or damaged screws for other reasons can be better tackled with all possible tools such as fork or roller wrenches, clamp pliers and other various tools.
- Es braucht auch nicht unbedingt ein (passender) Sechskantschlüssel (bzw. Schlitz- oder Kreuzschlitzschraubendreher) vorhanden zu sein. - It is also not absolutely necessary to have a (suitable) hex key (or a flat-head or Phillips screwdriver).
- Durch die teilzylindrische Schulter am Schraubenkopf wird eine Verletzung des an die Schraube angrenzenden Werkstücks durch das verwendete (Hilfs-)Werkzeug vermieden. - The partially cylindrical shoulder on the screw head prevents injury to the workpiece adjacent to the screw by the (auxiliary) tool used.
- Durch die Abflachungen wird Material eingespart und die Schraube ist leichter. - The flats save material and the screw is lighter.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH211188A CH676872A5 (en) | 1988-06-03 | 1988-06-03 | Screw with cylindrical head and threaded shank - has two opposite facing flat parts on head's periphery, and inner hexagon, with slot |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH211188A CH676872A5 (en) | 1988-06-03 | 1988-06-03 | Screw with cylindrical head and threaded shank - has two opposite facing flat parts on head's periphery, and inner hexagon, with slot |
Publications (1)
Publication Number | Publication Date |
---|---|
CH676872A5 true CH676872A5 (en) | 1991-03-15 |
Family
ID=4226130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH211188A CH676872A5 (en) | 1988-06-03 | 1988-06-03 | Screw with cylindrical head and threaded shank - has two opposite facing flat parts on head's periphery, and inner hexagon, with slot |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH676872A5 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7097404B2 (en) | 2002-08-04 | 2006-08-29 | Mair Avganim | Auto-torque, tamper-proof screws |
DE102011116860A1 (en) * | 2011-10-25 | 2013-04-25 | Frank Schlimm | Screw has partially hardened screw head, where screw head is half-hardened by hardening process, and hexagon socket tool engaging surface and cross recess engaging surface are provided in screw head |
-
1988
- 1988-06-03 CH CH211188A patent/CH676872A5/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7097404B2 (en) | 2002-08-04 | 2006-08-29 | Mair Avganim | Auto-torque, tamper-proof screws |
DE102011116860A1 (en) * | 2011-10-25 | 2013-04-25 | Frank Schlimm | Screw has partially hardened screw head, where screw head is half-hardened by hardening process, and hexagon socket tool engaging surface and cross recess engaging surface are provided in screw head |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0810377A1 (en) | Threaded connection for joining two profiles | |
AT400478B (en) | THREADED PART WITH A TOOL APPROACH | |
CH676872A5 (en) | Screw with cylindrical head and threaded shank - has two opposite facing flat parts on head's periphery, and inner hexagon, with slot | |
CH622862A5 (en) | Screw with head | |
DE4421069A1 (en) | Combined tool with ratchet spanner head | |
EP0460264A1 (en) | Screw | |
DE19628780B4 (en) | Arrangement for quick attachment of a sanitary fitting | |
DE29819955U1 (en) | Device for connecting two plates | |
EP0157890A1 (en) | Cutting tool with cutting head and coupling shaft | |
EP0558831B1 (en) | Screw or screwbolt | |
DE29619599U1 (en) | Spanner | |
DE2463427C2 (en) | ||
DE19928144A1 (en) | Fastener for profile with longitudinal slot comprises screw and hammer head nut which is inserted into slot and turned through right angle to lock it, top of nut having screwdriver slot and its underside having recess into which spring fits | |
DE804871C (en) | Screw connection | |
DE19934974C1 (en) | Connection of a screw with a polygonal head or a polygonal nut and a wrench | |
DE1805210A1 (en) | Nose screw | |
DE202018003142U1 (en) | Multifunction bar | |
DE8326144U1 (en) | Hanger bolt for fastening parts, in particular door pull handles, to chipboard | |
EP0987450B1 (en) | Connecting arrangement for profiles | |
DE2034993B2 (en) | Cutting tool for chip removing machining - has locating pin with head of triangular cross=section, with curved edges for precise location | |
WO2022233631A1 (en) | Instrument for securing threaded components | |
CH689986A5 (en) | Screw union comprises screw with head, threaded bolt, nut with core hole with or without inner thread and securing washer, threaded bolt having two symmetrical key surfaces | |
DE4028706A1 (en) | SOCKET OF A RATCHET SOCKET | |
DE3921874A1 (en) | Screw with a countersunk recess in the head, a right-handed and a left-handed thread being located on the inner wall of said recess. Screwdriver with complementary threads on the outer border of the part which is screwed into the countersunk recess in order to screw in, and unscrew, the screw | |
EP0934760B1 (en) | Multi-purpose tool |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |