DE2317736A1 - SCREW CONNECTION AND PROCEDURE FOR SCREWING PLASTIC SCREWS INTO SCREW-IN PLASTIC PARTS WITHOUT THREAD - Google Patents
SCREW CONNECTION AND PROCEDURE FOR SCREWING PLASTIC SCREWS INTO SCREW-IN PLASTIC PARTS WITHOUT THREADInfo
- Publication number
- DE2317736A1 DE2317736A1 DE19732317736 DE2317736A DE2317736A1 DE 2317736 A1 DE2317736 A1 DE 2317736A1 DE 19732317736 DE19732317736 DE 19732317736 DE 2317736 A DE2317736 A DE 2317736A DE 2317736 A1 DE2317736 A1 DE 2317736A1
- Authority
- DE
- Germany
- Prior art keywords
- screw
- plastic
- thread
- screwing
- screws
- 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.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims description 23
- 229920003023 plastic Polymers 0.000 title claims description 23
- 238000000034 method Methods 0.000 title claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/005—Nuts or like thread-engaging members into which threads are cut during screwing
-
- 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
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0015—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being a soft organic material, e.g. wood or plastic
-
- 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
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
- F16B25/0052—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour
-
- 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
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0078—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw with a shaft of non-circular cross-section or other special geometric features of the shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Screw Conveyors (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Deutsche ITT Industries GmbH 4. April 1975German ITT Industries GmbH April 4, 1975
78 Freiburg im Breisgau ZL/Schn/c78 Freiburg im Breisgau ZL / Schn / c
68 382 - A/72 - S. Pitacco - 568 382 - A / 72 - S. Pitacco - 5
Schraubverbindung sowie Verfahren zum Einschrauben von Schrauben aus Kunststoff in Einschraubteile aus Kunststoff ohne GewindeScrew connection as well as method for screwing in screws Plastic in screw-in parts made of plastic without thread
Die Erfindung bezieht sich auf eine Schraubverbindung, bestehend aus einer selbstschneidenden Schraube und einem Einschraubteil aus Kunststoff ohne Gewinde mit einer Bohrung von etwa gleichem Durchmesser wie der Kerndurchmesser der Schraube zur Aufnahme dieser Schraube sowie ein Verfahren zum Einschrauben von Schrauben aus Kunststoff in Einschraubteile aus Kunststoff ohne Gewinde.The invention relates to a screw connection consisting of a self-tapping screw and a screw-in part made of plastic without thread with a bore of approximately the same diameter such as the core diameter of the screw to receive this screw, as well as a method of screwing plastic screws into Screw-in parts made of plastic without thread.
Die bekannten selbstschneidenden Schrauben aus Metall haben Gewinde» welches mit in Längsrichtung verlaufenden Einschnitten oder liuten versehen ist, wodurch Schneidkanten gebildet werden, durch die beim Einschrauben der Schraube ein Innengewinde in den Sitz eingeschnitten wird. Schrauben dieser Art können in gewindelosen Öffnungen eingeschraubt werden, die in Materialien von geringerer Härte als das Material der Schraube vorgesehen sind.The well-known self-tapping screws made of metal have threads » which with incisions or liuten running in the longitudinal direction is provided, whereby cutting edges are formed through which an internal thread is cut into the seat when the screw is screwed in will. Screws of this type can be screwed into unthreaded openings which are provided in materials of lower hardness than the material of the screw.
Die Verwendung selbstschneidender Schrauben erleichtert die Bildung von Gewinde in einfachen, meist zylindrischen Bohrungen der entsprechenden Einschraubteile. Dieses Verfahren bringt erhebliche Vereinfachungen für die Herstellung von gegossenen Körpern aus Kunststoff mit Sitzen zum Einschrauben von Schrauben mit sich. Solche Einschraub-The use of self-tapping screws makes the formation easier of threads in simple, mostly cylindrical bores of the corresponding screw-in parts. This procedure brings considerable simplifications for the manufacture of molded plastic bodies with seats for screwing in screws with them. Such screw-in
309846/0358309846/0358
teile können durch einen Gießvorgang erzielt werden, da aufgrund der Verwendung selbstschneidender Schrauben Jceine Gewinde erforderlich sind. Die Verwendung von Schrauben aus elastischem Material zum Einschrauben in zylindrische gewindelose Sitze in Kunststoff ist wegen ihrer geringen Härte nicht möglich; die Beanspruchung des Schraubengewindes würde die Festigkeit des Materials überschreiten, was zu Beschädigungen des Gewindes oder zum Zerbrechen der Schraube führen kann.parts can be achieved by a casting process, as due to the Use of self-tapping screws Jceine thread required are. The use of screws made of elastic material for screwing in in cylindrical threadless seats in plastic is not possible because of their low hardness; the stress on the screw thread would exceed the strength of the material, which could damage the thread or break the screw can.
Der vorliegenden Erfindung liegt di-e'Aufgabe zugrunde, die zuvor beschriebenen Unzulänglichkeiten durch ein Verfahren zu beheben, welches das Einschrauben von selbstschneidenden Schrauben aus Kunststoff in gewindelose Sitze aus Kunststoff ermöglicht, ohne Beschädigungen des Gewindes oder der Schraube hervorzurufen.The present invention is based on the task described above To remedy deficiencies through a process which allows self-tapping plastic screws to be screwed into threadless plastic seats without damage of the thread or the screw.
Ferner ist es Aufgabe des erfindungsgemäßen Verfahrens, eine einfache und wirtschaftliche Durchführung entsprechend den Konstruktionsprinzipien für Kunststoff nach dem Stand der Technik zu erlauben.It is also an object of the method according to the invention to provide a simple and economical implementation according to the design principles for plastic according to the state of the art.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in der Bohrung des. Einschraubteils eine Vielzahl von in Längsrichtung verlaufenden Nuten vorgesehen sind, deren Tiefe in etwa der Gewindetiefe entspricht und daß die Schraube auch aus Kunststoff.besteht.This object is achieved in that in the bore Des. Screw-in a plurality of extending in the longitudinal direction Grooves are provided, the depth of which corresponds approximately to the thread depth and that the screw is also made of plastic.
Weitere Merkmale und Vorteile werden anhand der nachfolgenden Beschreibung erläutert, die Bezug nimmt auf die in der Zeichnung dargestellten Ausführungsbeispiele. Further features and advantages are based on the following description explained, which refers to the embodiments shown in the drawing.
Es zeigen: "Show it: "
Fig. 1 einen axialen Schnitt durch ein Einschraubteil ausFig. 1 shows an axial section through a screw-in part
Kunststoff, in dem eine selbstschneidende Schraube nach dem erfindungsgemäßen Verfahren eingeschraubt ist;Plastic in which a self-tapping screw is after the method according to the invention is screwed;
- 5 -3094 46/0.358- 5 -3094 46 / 0.358
Fig. 2 einen axialen Querschnitt durch ein Einschraubteil und eine Schraube in nicht eingeschraubtem Zustand;2 shows an axial cross section through a screw-in part and a screw in the non-screwed-in state;
Fig. 3 eine Draufsicht auf das Einschraubteil aus Kunststoff und3 shows a plan view of the screw-in part made of plastic and
Fig. 4 eine Draufsicht auf die Unterseite_der Schraube.Fig. 4 is a plan view of the underside of the screw.
Mit 1 wird eine gegossene Kunststoffschraube bezeichnet, bestehend aus einem vergrößerten Kopfteil 1a und einem zylindrischen Schraubenkern 2, auf dem ein selbstschneidendes Gewinde vorgesehen ist. Bei dem Ausführungsbeispiel nach der Zeichnung bilden in Längsrichtung verlaufende Schnitte bzw. ifuten in jedem Gewindegang zwei Schneidkanten 3a, die einander diametral gegenüberliegen.With a cast plastic screw is referred to, consisting of an enlarged head part 1a and a cylindrical screw core 2 on which a self-tapping thread is provided. In which Exemplary embodiment according to the drawing, cuts or grooves running in the longitudinal direction form two cutting edges in each thread turn 3a, which are diametrically opposite each other.
In einem gegossenen Einschraubteil 4 aus Kunststoff ist eine zylindrische Bohrung 5 vorgesehen, die die Schraube 1 aufnimmt. Der Innendurchmesser der Bohrung 5 entspricht nahezu dem Durchmesser des Schraubenkerns 2. Der Innendurchmesser ist jedoch geringfügig größer, um das erforderliche Einschraubspiel beim Einschrauben zu erzielen.In a cast screw-in part 4 made of plastic is a cylindrical Hole 5 is provided, which receives the screw 1. The inner diameter of the bore 5 corresponds almost to the diameter of the Screw core 2. However, the inner diameter is slightly larger, in order to achieve the required screw-in clearance when screwing in.
Erfindungsgemäß wird beim Gießen des Einschraubteils 4 eine Vielzahl von in Längsrichtung verlaufenden Nuten 6 in der Bohrung 5 gebildet, welche in gleichmäßigen Abständen voneinander an der Innenwand der Bohrung 5 angeordnet sind und eine Tiefe aufweisen, die im wesentlichen der Tiefe des Schraubengewindes 3 entspricht.According to the invention, when the screw-in part 4 is cast, a plurality formed by grooves 6 running in the longitudinal direction in the bore 5, which are arranged at regular intervals from one another on the inner wall of the bore 5 and have a depth that is substantially corresponds to the depth of the screw thread 3.
Beim Einschrauben der Schraube 1 mit Druck in die Bohrung 5 stellen die Buten 6 einen Aufnahmeraum für den Kunststoff dar, der von der selbstschneidenden Schraube bei der Bildung des Innengewindes an den Wänden der Bohrung 5 herausgeschält wurde.When screwing in the screw 1, press it into the hole 5 the butene 6 is a receiving space for the plastic that is attached to the self-tapping screw when the internal thread is formed the walls of the bore 5 was peeled out.
Das Verfahren nach der vorliegenden Erfindung ermöglicht ein Einschrauben selbstschneidender Schrauben aus Kunststoff ein gewindeloses Einschraubteil aus gegossenem Kunststoff.The method according to the present invention enables screwing in self-tapping screws made of plastic a threadless screw-in part made of molded plastic.
30 9 846/035830 9 846/0358
Die Bildung der in Längsrichtung verlaufenden Hüten 6 kann mittels bekannter Verfahren zum Gießen von Gegenständen aus Kunststoff erfolgen und ruft keine Herstellungsschwierigkeiten hervor.The formation of the longitudinal hats 6 can be made by means of known method for casting plastic objects and does not cause manufacturing difficulties.
Beispielsweise kann die Schraube aus Polykarbonat bestehen, während der Körper, in dem der Sitz 5 angeordnet ist, aus ABS-Harz (Acrylonitrile-Butadien-Styren) gegossen ist.For example, the screw can be made of polycarbonate while the body in which the seat 5 is arranged is molded from ABS resin (acrylonitrile-butadiene-styrene).
Das Erfindungsprinzip läßt eine Vielzahl von Ausführungsbeispielen und Abwandlungen konstruktionstechnischer Details zu, ohne daß der Anwendungsbereich der Erfindung überschritten würde.The principle of the invention allows a variety of embodiments and modifications of constructional details without exceeding the scope of the invention.
— 5 —- 5 -
30 9 84 6/035830 9 84 6/0358
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT6838272A IT960373B (en) | 1972-05-04 | 1972-05-04 | PROCEDURE FOR THE COUPLING OF SCREWS OF PLASTIC MATERIAL WITH NON-THREADED SEATS MADE OF PLASTIC MATERIAL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2317736A1 true DE2317736A1 (en) | 1973-11-15 |
Family
ID=11309204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19732317736 Pending DE2317736A1 (en) | 1972-05-04 | 1973-04-09 | SCREW CONNECTION AND PROCEDURE FOR SCREWING PLASTIC SCREWS INTO SCREW-IN PLASTIC PARTS WITHOUT THREAD |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE2317736A1 (en) |
| ES (1) | ES414427A1 (en) |
| FR (1) | FR2183513A5 (en) |
| GB (1) | GB1380857A (en) |
| IT (1) | IT960373B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768910A (en) * | 1986-03-31 | 1988-09-06 | Jack Rath | Threaden pin with swagable collar |
| DE4227272A1 (en) * | 1992-08-18 | 1994-02-24 | Boellhoff & Co | Plastics fixture bolt or nut - has nut and bolt of compatible plastics with similar melting points and reusable thread, plastics being made stronger by having glass or carbon fibres in it |
| US5440439A (en) * | 1992-05-01 | 1995-08-08 | Minnesota Mining And Manufacturing Company | Cassette screw bosses having ribbed surfaces |
| DE29614210U1 (en) * | 1996-08-16 | 1996-10-02 | C.S. Freizeitgeräte Christel Schäferjohann, 32805 Horn-Bad Meinberg | Play equipment |
| DE102004021484A1 (en) * | 2004-04-30 | 2005-11-24 | Böllhoff Verbindungstechnik GmbH | Connecting arrangement with a plastic carrier part and a plastic threaded element |
| DE102014004306A1 (en) * | 2014-03-26 | 2015-10-01 | Elringklinger Ag | Plastic fastener with self-tapping and locking thread for components |
| DE102016101910A1 (en) * | 2016-02-03 | 2017-08-03 | Böllhoff Verbindungstechnik GmbH | Plastic threaded element and connection arrangement consisting of a plastic carrier part and a plastic threaded element |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2658876B1 (en) * | 1990-02-09 | 1994-07-08 | Itw De France | METHOD OF IMPLANTING A CONNECTION ELEMENT IN A SUPPORT OF SOFT MOLDED MATERIAL, ASSEMBLY ELEMENT SUITABLE FOR CARRYING OUT THIS METHOD, FIXING COMPRISING SAID ASSEMBLY ELEMENT, AND SUPPORT OF SOFT MOLDED MATERIAL OBTAINED ACCORDING TO LED PROCESS. |
| IE901885A1 (en) * | 1990-05-25 | 1991-12-04 | Glo Flo Products | Self threading and locking fasteners |
-
1972
- 1972-05-04 IT IT6838272A patent/IT960373B/en active
-
1973
- 1973-04-09 DE DE19732317736 patent/DE2317736A1/en active Pending
- 1973-04-19 GB GB1891473A patent/GB1380857A/en not_active Expired
- 1973-05-04 ES ES414427A patent/ES414427A1/en not_active Expired
- 1973-05-04 FR FR7316103A patent/FR2183513A5/fr not_active Expired
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768910A (en) * | 1986-03-31 | 1988-09-06 | Jack Rath | Threaden pin with swagable collar |
| US5440439A (en) * | 1992-05-01 | 1995-08-08 | Minnesota Mining And Manufacturing Company | Cassette screw bosses having ribbed surfaces |
| DE4227272A1 (en) * | 1992-08-18 | 1994-02-24 | Boellhoff & Co | Plastics fixture bolt or nut - has nut and bolt of compatible plastics with similar melting points and reusable thread, plastics being made stronger by having glass or carbon fibres in it |
| DE29614210U1 (en) * | 1996-08-16 | 1996-10-02 | C.S. Freizeitgeräte Christel Schäferjohann, 32805 Horn-Bad Meinberg | Play equipment |
| DE102004021484A1 (en) * | 2004-04-30 | 2005-11-24 | Böllhoff Verbindungstechnik GmbH | Connecting arrangement with a plastic carrier part and a plastic threaded element |
| CN100467887C (en) * | 2004-04-30 | 2009-03-11 | 伯尔霍夫连接技术有限公司 | A joining assembly including a plastic support member and a plastic threaded element |
| US7658581B2 (en) | 2004-04-30 | 2010-02-09 | Bollhoff Verbindungstechnik Gmbh | Joining assembly including a plastic support member and a plastic threaded element |
| CN101216062B (en) * | 2004-04-30 | 2011-10-12 | 伯尔霍夫连接技术有限公司 | Connecting arrangement with a plastic carrier part and a plastic thread element |
| DE102004021484B4 (en) | 2004-04-30 | 2018-11-29 | Böllhoff Verbindungstechnik GmbH | Method for producing a connection arrangement |
| DE102014004306A1 (en) * | 2014-03-26 | 2015-10-01 | Elringklinger Ag | Plastic fastener with self-tapping and locking thread for components |
| DE102016101910A1 (en) * | 2016-02-03 | 2017-08-03 | Böllhoff Verbindungstechnik GmbH | Plastic threaded element and connection arrangement consisting of a plastic carrier part and a plastic threaded element |
| US10851824B2 (en) | 2016-02-03 | 2020-12-01 | Böllhoff Verbindungstechnik GmbH | Plastic thread element and connection assembly consisting of a plastic carrier part and a plastic thread part |
Also Published As
| Publication number | Publication date |
|---|---|
| IT960373B (en) | 1973-11-20 |
| ES414427A1 (en) | 1976-02-01 |
| AU5509473A (en) | 1974-11-07 |
| FR2183513A5 (en) | 1973-12-14 |
| GB1380857A (en) | 1975-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| OHW | Rejection |