CH159904A - Screw dowel for insertion in a plate. - Google Patents
Screw dowel for insertion in a plate.Info
- Publication number
- CH159904A CH159904A CH159904DA CH159904A CH 159904 A CH159904 A CH 159904A CH 159904D A CH159904D A CH 159904DA CH 159904 A CH159904 A CH 159904A
- Authority
- CH
- Switzerland
- Prior art keywords
- screw
- hole
- plate
- insert
- piece
- Prior art date
Links
- 238000003780 insertion Methods 0.000 title claims description 3
- 230000037431 insertion Effects 0.000 title claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004579 marble Substances 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
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/08—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
- F16B13/0891—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation with a locking element, e.g. wedge, key or ball moving along an inclined surface of the dowel body
-
- 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
- F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
- F16B37/122—Threaded inserts, e.g. "rampa bolts"
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Connection Of Plates (AREA)
Description
Schraubendübel zum Einsetzen in eine Platte. Gegenstand vorliegender Erfindung ist ein Schraubendübel, welcher gekennzeichnet ist durch ein Einsatzstück mit Loch zum Einstecken einer Schraube und mit einem zungenförmigen, mit einer Keilfläche ver- sehenen Ansatz, auf welchem ein das Mutter gewinde aufweisendes Keilstück beim An ziehen der Schraube so verschiebbar ist, dass das Einsatzstück im Loch der Platte fest geklemmt wird.
Vorliegende Erfindung gestattet, Befesti gungsschrauben auf solche dünnen Platten, wie sie zum Beispiel für Marmor-Schalt- tafeln verwendet werden, befestigen zu kön nen, ohne besondere Muttern auf der Rück seite der Tafeln zu benötigen, und auch eine solche Befestigung zu ermöglichen in Fäl len, wo die Rückseite der Tafel unzugäng lich ist.
In beiliegender Zeichnung ist ein Aus führungsbeispiel des Schraubendübels darge stellt; darin ist: Fig. 1 ein senkrecher Schnitt durch einen in eine Schalttafel eingesetzten Schrauben dübel mit Randwulst, Fig. 2 eine Hinteransicht des Einsatz stückes und Fig. 3 eine Vorderansicht des Mutter stückes. In der Zeichnung bezeichnet 1 einen Teil der Schalttafelplatte mit einem Loch 2, in welches ein Schraubendübel 3 eingesetzt ist.
Sein Einsatzstück 4, welches eine dem Loch entsprechende Zylinderform besitzt, weist eine Vorderwand 5 mit einem Einsteekloch 6 für die Schraube 7 und einen an. diese Vorderwand angeschlossenen zungenförmigen, mit einer Keilfläche 8 versehenen Ansatz 9 auf.
Auf dieser Keilfläche sitzt ein mit dem Muttergewinde versehenes, der Lochform teilweise angepasstes Keilstück 10, welches beim festeren Anziehen der Schraube ? auf der Keilfläche 8 verschoben wird und da durch sich gegen die obere Lochwand an- legt und damit das Einsatzstück im Loch festklemmt; die Schraube kann nun wieder entfernt werden, um das auf der Platte zu befestigende Stück in Stellung zu bringen und mittelst der Schraube wieder festzu schrauben.
Hierbei ist zu beachten, dass das Loch im Einsatzstück so weit gewählt ist, dass die Schraube nach dem Festklemmen des Keilstückes die obere Wandung des Loches nicht berührt, weil sonst beim Berühren das Keilstück mit seiner Achse sich beim An stossen der Schraube an der genannten obern Lochwand schief stellen könnte und dem ungehinderten Aus- und Einschrauben der Schraube in das Keilstück hinderlich würde.
Um auf alle Fälle während des An ziehens der Schraube ein Zurückziehen des Einsatzstückes 4 zu vermeiden, kann an der Vorderwand dieses Stückes ein Randwulst 11 vorgesehen werden, so dass das Einsatz stück in der Platte 1 gegen Verschiebung nach innen gesichert ist (siehe Fig. 1).
Screw dowel for insertion in a plate. The subject of the present invention is a screw anchor which is characterized by an insert piece with a hole for inserting a screw and with a tongue-shaped projection provided with a wedge surface, on which a wedge piece having the nut thread is displaceable when the screw is tightened the insert is firmly clamped in the hole in the plate.
The present invention allows fastening screws to be attached to thin plates such as those used for marble switchboards, for example, without the need for special nuts on the back of the panels, and also to enable such a fastening in cases len where the back of the board is inaccessible.
In the accompanying drawing, an exemplary embodiment from the screw anchor is Darge provides; therein: Fig. 1 is a vertical section through a screw plug inserted into a control panel with an edge bead, Fig. 2 is a rear view of the insert piece and Fig. 3 is a front view of the nut piece. In the drawing, 1 denotes a part of the panel board with a hole 2 into which a screw anchor 3 is inserted.
Its insert piece 4, which has a cylindrical shape corresponding to the hole, has a front wall 5 with a piercing hole 6 for the screw 7 and one. this front wall connected tongue-shaped projection 9 provided with a wedge surface 8.
On this wedge surface there is a wedge piece 10 provided with the nut thread and partially adapted to the shape of the hole, which wedge piece 10 when tightening the screw? is displaced on the wedge surface 8 and as a result rests against the upper hole wall and thus clamps the insert in the hole; the screw can now be removed again in order to bring the piece to be fastened to the plate in position and to screw it tight again by means of the screw.
It should be noted here that the hole in the insert is chosen so that the screw does not touch the upper wall of the hole after the wedge has been clamped, because otherwise the wedge with its axis will collide with the above-mentioned upper wall when the screw is touched Could put the perforated wall at an angle and the unhindered screwing in and out of the screw in the wedge would be a hindrance.
In order to prevent the insert piece 4 from being withdrawn while the screw is being tightened, an edge bead 11 can be provided on the front wall of this piece so that the insert piece is secured in the plate 1 against inward displacement (see FIG. 1 ).
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH159904T | 1932-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH159904A true CH159904A (en) | 1933-02-15 |
Family
ID=4413595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH159904D CH159904A (en) | 1932-01-12 | 1932-01-12 | Screw dowel for insertion in a plate. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH159904A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2769990A (en) * | 1953-06-15 | 1956-11-13 | Ruben L Pawsat | Wedge nut forging machine |
| DE2901986A1 (en) * | 1978-01-20 | 1979-07-26 | Stellan Oernberg | ANCHORING DEVICE FOR AN OPENING, E.G. FOR ONE PIPE END |
-
1932
- 1932-01-12 CH CH159904D patent/CH159904A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2769990A (en) * | 1953-06-15 | 1956-11-13 | Ruben L Pawsat | Wedge nut forging machine |
| DE2901986A1 (en) * | 1978-01-20 | 1979-07-26 | Stellan Oernberg | ANCHORING DEVICE FOR AN OPENING, E.G. FOR ONE PIPE END |
| US4257308A (en) * | 1978-01-20 | 1981-03-24 | Oernberg Stellan | Anchoring device for an opening, e.g. a tube end |
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