DE1925960U - FASTENING PLUG. - Google Patents

Description

SOCIETE CIVILE D ¹ ETUDE DE PROCEDES DE SCEIiEMENT

Fixing dowels

Priority: France, September 16, 1964

The object of the innovation is a fastening dowel, which has a spiral cross-section or the shape a tape or sheet rolled on itself so that the portions on the hand overlap each other Such dowels are intended to be inserted into holes and to interact with screws, bolts, etc., in such a way that when Screwing the screws into these dowels will seek to unwind them, creating a radial expansion and a powerful Sticking in the honing holes is achieved φ

These dowels have certain disadvantages, in particular that they or the like of the fastening screw. by doing

To give Montageloeh an eccentric saga, as a result of the two overlapping rails on the one above the other of the dowel, as shown in FIG. 1

The renewal according to the dowel should this laehteil remedy. For this he is made of any 7 simultaneously yielding and resistant material and has a spiral cross-section with overlapping one another Randern, whereby according to the innovation on the inside of the roll protruding ribs or tongues are provided which around protrude a distance which corresponds approximately to the thickness of the jack, these projecting hips ο «the like only in that middle section of the width of the unwound jack are so that they are diametrically opposed to the overlapping obstacles opposite

According to another characteristic of the fire the one made of a plastic with the corresponding leagues manufactured dowels on its outside in the longitudinal direction arranged luten or depressions, which in particular improve the adhesion of the dowel in the mounting hole and penetrate the screw or the like by reducing the ease required strength

The firing is referenced below explained on the drawing by way of example.

1 shows, in a cross section, the eccentric position of a visual hood or the like in a rolled-up dowel known Type 7

FIG. Z shows, in a perspective view, an embodiment of the dowel according to the innovation with a spiral

Cross-section·

Fig. 3 shows the profile in two cross-sections

,of
of the flat and / rolled dowel

fig 4 and 5 are diagrammatic views of the inside and outside of the stretched dowel

Fig. 6 is an axial longitudinal section showing the one inserted in a hole with a fastening screw shows the cooperating anchors according to the innovation

Pig 7 is a section along line 7-7 of fig β

The dowel consists of any kind of plastic with suitable properties, which in particular has a certain flexibility so that it can be ^{deformed and rolled when inserting and screwing the} screw, whereby it is sufficiently resistant not to be damaged by the screw and compressive forces to be destroyed, whereby he see at the same time the Eontagelöehern and the fastening screws ο »dgl · adapts ·

The dowels can, for example, be made of HyIon, Eilsan or can also be made from polypropylene, vinyl chloride etc.

According to one embodiment, the plastic strip is 1, which forms the dowel after rolling in, in any dimensions according to the hitting holes and the fastening organs made »

As for other embodiments, the

Innovation according to the dowel directly with a spiral cross-section be manufactured by compression molding, injection molding or any other known process

In all embodiments, the dowel has

on the inner side 1a after it has been rolled up, straight projecting lips © of the tongues 1V, which look over but extend the entire length of the dowel only in the middle Section of the width of the unwound label are formed. You Bippen 1b jump across from the. 2) 1 eke of the Bubeis do one Segment h in front, which corresponds approximately to this thickness £ »

furthermore, the outer side of the anchor points

luten or fertiefungern 1d aaf »welehe ia come together Distances preferably over the developed width and the entire length of the dowel extend · piping jfaten have a sufficient fiefs, in order to facilitate the adhesion without breaking the forces occurring during the fastening. The lutes also facilitate the introduction the screws or the like by increasing the amount of space required for the bin screws required force,

When the strip 1 to form the dowel

is rolled up, or if the dowel is made in some other way where the edges% - 1f are superimposed, the Dowel set into the honing hole, the radial expansion In the hole, the forces involved in screwing the Screw? o »like # is generated. This expansion is due to the pressing of the outside If against the wall desüochs while the inner section te, slides and passes through the screwing effect develops »This creates a particularly strong fastening and blocking of the arrangement in the hole I · Sticking and fixing as the wall of the yoke by the grooves Id, which can be used with any type of Material in which the üoeh f is executed, a better one System and connection result

Lie screw Y is in the dowel in relation to the hole Ϊ (Fig. 7) by the action of the protruding ribs 1b centered again · When screwing in, the sewing threads of the screw depending on the hardness of the plastic more or less penetrate simultaneously into the projecting ribs 1b and into the inner land 1e_ «This is for an exact location of the Fastening devices and a good appearance are advantageous} and the owner no longer needs to worry about the eccentric position that occurs with the known rolled-up dowels.

According to an advantageous embodiment of the fastening dowel, the edges 1e_ - 1f_ do not lie against one another, but are separated by a space £, which ver * can have different dimensions This space allows adapt the dowel to several dimensions of assembly lugs Furthermore, this gap facilitates the insertion of the dowel into the fastening hole, while the elastic reaction of the dowel inserted into the contact hole prevents it from falling out of the hole, which is particularly important in the case of Yornahme of fixings in ceilings is interesting

The rolled up dowels according to the innovation can be produced without increasing the price. she can be made from strips of great length, which are carried out according to the above characteristics and then rolled up and required or in a predetermined manner are cut * Furthermore, the dowels can be made in the form of elements of great length, which directly have the spiral cross-section »

These elements become various dowels

long cut up according to the purpose, "

¥ ena the strips made of a plastic

It is what egg eggs are - at the same time sufficient strength and has sufficient resilience and deformability the user only receives this feedarfsgemass in the i-ocularly a · * roll into the assembly loopers "

The lips that jump out of the gate and that can luten

if necessary · replaced by other protruding or recessed shapes · The strips can be one of the reehteekigen or q.ua · " have a different shape

live the advantages already mentioned above

is still due to the special resistance of the anchor to point out against tearing out.

Claims (1)

Protection requirements © 1) Fastening dowel, characterized that he is made of a simultaneously resilient and resilient Material is made, has a spiral cross-section with overlapping alleviate (1_β - If) and on ribs or tongues protruding from the inside of the coil (1b), which goal jumping by ei & e distance (h), which corresponds roughly to the bead (ei) of the dowel »whereby the protruding lips (1bJ are formed only in the middle section of the width of the developed dowel, so that they den each other overlapping! others (1e- 1fJ are diametrically opposite 2 *) dowels according to claim 1, marked with grooves or indentations (1d_5 on the outside of the spiral winding ». ■ '■' ■ - '" .. ■' ■, .- ^.; / ^: - -: ^; : '" :? i / N ' - 3 ·) Dowel according to claim 1, characterized that the overlapping lander (Ie - If.) do not butt against each other, but rather through a gap (£) " are separated 4) dowels according to one of claims 1 to 3, characterized in that it is made of any kind of plastic with corresponding ligaments, which at the same time has a certain flexibility, so that it can be deformed during insertion and screwing and rolled up in certain cases, whereby it is sufficiently resistant ».; '- y ■ ".-. - .."'■■■' ■ ";■".; ■■. i; ^: - ^y; -. '■ - ■.' ^;; 5 #) dowel according to claim 1> characterized in that it is immediately ^ with its spiral cross-section by compression molding, injection molding or another known method is made. 6 ») dowels naek Aaspruela 1, dadureh, gefeeaazeiehnet, that it is made directly in the form of a strip, which is rolled up 7 #) dowel according to claim 1, characterized in that the protruding lips (Ib) are straight and look over the whole length of the dowel 8.) Dowel according to claim 1, characterized »that see the hats or depressions (1d) over the whole extend the length of the dowel 9 ♦) Dowel according to claim 1, characterized in that that it is produced in elements of greater length, wel ^ before immediately have the spiral cross-section and as required be cut up * 10 ») dowel according to claim 1, characterized ^ draws »that it is made from strips of large length, which are rolled up and then as required or in advance · « be cut in a certain way