JPS5821127B2 - Fasteners for mounting in panel holes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention preferably relates to panels such as walls or ceilings (p.
relates to a fastener for attachment to a hole in an anel).

This fastener cooperates in its attachment with a suitable fastening member, preferably a screw, and is used, following attachment, to attach an object to the panel, for example, or a suspension device of, for example, For example, it is for making it possible to construct a hook.

The fastener includes a portion suitable for insertion into the hole;
The portion is formed to be expandable and upon installation of the fan, in cooperation with a fixing member in the form of a screw or the like, expands into abutment against the contact surface, the arrangement being substantially relative to the extension of the hole. is perpendicular to

Fans of the above type have been known for many years in many types of implementations in panels, the fasteners of which abut the rear side of the panel by their expansion after installation.

In some of these known fasteners, the extension portion consists of one or more outwardly bendable arms.

Other examples include a split portion that expands and abuts the back surface at the attachment.

In other known examples, the expansion portion is made from a resilient material, such as rubber, that is compressed and expanded to abut against the back surface during installation.

All hitherto known fasteners of this kind are limited to those in which the holes in the panel are inserted into the back side and are therefore also obtained by an expandable part to the back side of the panel and the tension of the fastener It limits the size of the contact surface which determines the strength.

The present invention allows for the insertion of expandable materials despite the above-described limitations due to holes, which material substantially enlarges the contact surface available for known fasteners, and the present invention This provides tensile strength that substantially exceeds known fasteners.

The present invention provides a fastener for attachment to a hole in a panel, comprising: a portion inserted into the hole; a fixing member inserted into the portion; said portion is expandable to abut a contact surface of said panel disposed substantially perpendicular to the axis of said hole; said portion comprises two bodies; and said portion comprises two bodies; are arranged back and forth in the insertion direction of the fastener through the hole, and when one of the two bodies is expanded, one of the two bodies is slidably movable toward the other of the two bodies, In a fastener in which the two bodies are in contact with each other, the two bodies are expandable in a direction transverse to the insertion direction, and in the expanded fastener, the two bodies are in contact with the panel. abutting against the contact surface of the two bodies, and with respect to the contact surface, those outward of the two bodies,
It is characterized by being torn.

Thus, with this design of the fastener according to the invention,
It is known in the art to insert two bodies through the holes in the panel, and to make them expandable and abut against the contact surfaces, so that the size of each body corresponds to the size of the holes. The contact surface corresponds to the total contact surface available in the fastener.

The movability of the bodies abutting each other is such that the bodies placed closest to the outside of the panel and abutting the contact surface in any installation are supported by bodies placed at the rear;
Another advantage is that the fastener can be tightened with greater force.

When referring to expandable bodies in this regard, this condition applies to all expanding bodies that are deformed from their normal shape or bent outwardly from their position upon penetration through a hole in a panel. It can be seen that the above-described match is achieved.

The invention can be embodied in a number of different embodiments.

In the following, some of these embodiments are described in detail with reference to the accompanying drawings.

The fastener shown in FIGS. 1 to 3 comprises a sleeve 2 with a collar 3 and a first member or member connected to the sleeve 2 by a strip 4, as is most apparent from the exploded view in FIG. 1 an expandable body 5 and an annular sleeve 7 connected to the expandable body 5 by a strut IJ tube 6.

The expandable body 5 has a central hole (not shown) and is partially split to form two outwardly foldable wings 8 when viewed from the top in FIG.

The strip 4 is connected to the expandable body 5 at a distance below the outer ends of the wings 8 so as not to prevent the wings from being bent outwards.

The sleeve 2 is designed as a helical spring, as shown by way of example.

The outer diameter of the sleeve 7 is substantially equal to the outer diameter of the sleeve 2.

The fastener according to FIGS. 1 to 3 further includes a second element 9 consisting of a second or expandable body 10;
The expandable body 10, like the expandable body 5, is split from the top end to form two outwardly foldable wings 11.

The lower cylindrical part 12 is not outwardly bendable and includes a hole 13 with a central hole (not shown) into which a nut 14 is inserted, aligned with the central hole.

This fastener is designed to cooperate with a fixing member 15, such as a screw.

FIG. 2 shows the fastener in combination with a screw prior to attachment to a panel.

The strip 6 of the first element 1 is guided and held in the second element 9 in a groove 16 formed between the lower parts of the wings 11 connected to the cylindrical part 12.

The sleeve 7 of the first element 1 slidably surrounds the cylindrical part 12 and in this position the wings 11 and the cylindrical part 12
It abuts against a shoulder 17 disposed between.

The wing 11 of the second element 9 is the same as the wing 8 of the second element 1.
is placed perpendicular to the

The screw 15 is drawn through the central hole of the sleeve 2 and through the expandable body 5 of the first element 1 and the cylindrical part 12 of the second element 9 and is threaded by the nut 14 .

The wings 8 and 11 of each of the expandable bodies 5 and 10 are arranged one behind the other along the thread 15 and, in this position prior to installation, are arranged substantially inside the plane of the shell of the sleeve 7, or It can be compressed into or inside the plane.

The two expandable bodies 5 and 10 can each be inserted for attachment to a panel through a hole in that panel, which hole is slightly larger than the sleeve 7 and is therefore substantially larger than the sleeve 7. This makes it possible to insert sleeves 2 having the same size.

The fastener shown installed in FIG.
using as a grip, the collar 3 is inserted through the hole 18 in the panel 19 until it abuts the outer surface of the panel.

The fastener is shown in side view in FIG.

FIG. 3 further shows object 20 secured to panel 19 by a fastener cooperating with screw 15. FIG.

When screwing into the screw 15 in cooperation with the nut 14, the second
The element 9 has a wing 8 of the first element 1 with respect to the first element 1.
Also, the wings 11 of the second element 9 are guided in such a way that they abut positively against the back side of the panel 19.

The final contact surface to the back of the panel will be approximately twice as large as that obtained with a conventional fastener having only one extended (extendable or bendable) body.

Moreover, the load is advantageously distributed between the two bodies and the pressure on the back side of the panel is advantageously evenly distributed around the holes.

Also, the wings 11 of the second element 9 provide some additional resistance to the outward bending of the wings to the wings 8 of the first element 1, so that the expected contact pressure against the back of the panel is only compared to installing one expandable body.

The sleeve 2 is designed as a spring which makes it possible to apply a complete fastener to panels of different thicknesses.

FIG. 4 shows an unattached embodiment corresponding to the embodiment shown in FIGS. 1-3, except that the expandable body, designated 5 and 10, respectively, has four Wings 8 and 11 are provided such that wing 11 is preferably offset by 45 degrees from wing 8 to distribute contact pressure evenly over the contact surface at the fastener installation location as shown.

FIG. 5 shows that generally the two expandable body wings are positioned relative to each other at the fastener attachment location to provide a large contact area as well as advantageous load distribution for the contact area around the hole in the panel. This is to show that.

It, of course, applies in a corresponding manner to the other embodiments shown and described.

In the following description of the embodiment according to FIG. 4 and of further embodiments with reference to the accompanying drawings, the reference numerals for corresponding details are the same as in the embodiment according to FIGS. 1 to 3. FIG.

FIGS. 6 and 7 show five fasteners according to the present invention.
This figure shows another example.

FIG. 6 shows the fastener in a position prior to attachment to the panel 19, and FIG. 7 shows the fastener in a position attached to the panel.

In this latter position, the fastener is shown in a side view in FIG.

In this embodiment, the expandable body 5 is placed in closer proximity to the sleeve 2 and the second expandable body 5 shown in FIG. It is loosely slidably disposed along a screw 15 downwardly to a position within the central hole of the expandable body 10 .

From the sleeve 2 in this embodiment the strip 21
, which are connected to the second extension body 10 at a distance below the outer edge of the wing 11 .

In the installed state following the tightening of the screws 15, the wings 8 and 11 of the expandable bodies 5 and 10 are respectively shown in FIGS. It is pressed in the same way as in a fastener.

The fasteners shown in FIGS. 8 and 9 in the uninstalled and installed positions, respectively, are consistent with the embodiment shown in FIGS. 6 and 7, but
A strip extending from the sleeve 2, indicated at 22, is connected to the wing of the expandable body 10 at the wing outer end, providing abutment for the wing 11 and the strip 22 in the attachment position as shown in FIG.

Finally, in FIG. 10, yet another embodiment is shown, in which case the expandable body 5 is shown for illustrative purposes.
or the first piece produced to form one of 10 is
In this case, the expandable body 10 is shown by way of example, but in the illustrated embodiment comprises four wings and is connected by a strip 23 to each sleeve half 2' to form the sleeve 2.

Moreover, instead of an inserted nut 14, a threaded hole 24 is provided directly in the expandable body 10.

When assembling the fastener, the wings 11 are folded inward to form an expandable body corresponding to the expandable body 10 shown in FIG.
It is joined with a hook or the like shown in .

The second expandable body, ie the expandable body 5 shown by way of example and which can be designed as the illustrated embodiment, is assembled to the expandable body 10 and screwed into a fastener assembled with a screw 15.

In each of the different embodiments of fasteners according to the invention described above and shown in the drawings, the fasteners are arranged in a panel,
In the apertures of a panel 19, for example in the form of a plasterboard, the attached expandable bodies 5 and 10 are fixed such that they are displaced relative to each other and expanded outwardly to abut against the back surface of the panel.

Although this is considered the most common application for fasteners according to the invention, other applications are also envisioned.

Another possible application is the installation of fasteners according to the invention into holes in walls of porous materials, such as walls of lightweight concrete, in particular.

In the molding material, the expandable body is relatively displaced;
The contact surface causes a crater (craterin)
g) is formed in the material against which the contact surfaces will abut both bodies in the same way as against the back of the panel 19 shown.

The material of the fastener according to the invention can be, for example, a suitable plastic material, nylon, glass fiber reinforced nylon, rubber or metal.

The illustrated embodiment includes an expandable body split to form wings or the like.

Although the fastener according to the invention is not limited in this respect, its expandable body can be configured to provide the desired expansion and common contact to the contact surface.

Fasteners included in the same fastener can also have mutually different shapes.

In another variant, the parts of the expandable body that contact each other in the installed state of the fastener, i.e. the overlapping surfaces between the expandable bodies 5 and 10 in the illustrated embodiment, for example in FIG. Protrusions or grooves may be provided to further increase the resistance to expansion of the body and thus the tensile strength of the fastener.

In another variant, the overlap is greater than that shown, e.g., the expandable portion of the expandable body 10 is There is no overlap with the expandable portion of the expandable body 5, ie the expandable portion of the expandable body is not relatively laterally biased as shown for the alternative embodiments.

The expandable portion of the expandable body 10 may contact the contact surface, i.e. the back side of the panel 19 as shown, or may only abut the expandable portion of the expandable body 5 without abutting the contact surface. Can be done.

Furthermore, the illustrated sleeve 2, which is designed as a spring, can be replaced by another elastic member consisting of
can also be constructed as a rigid member.

The collar 3 shown is not necessary in each case; its function can be performed, for example, by an object fixed to the panel.

Regarding another variant of the illustrated embodiment of the fastener according to the invention, it is provided that the inserted nut 14 can be replaced by a screw formed directly in the expandable body, and that in a variant comprising the nut or screw is inserted into the hole in the wall. It may be mentioned that it can also be provided in the expandable body which is located very close to the body.

In other embodiments of the fastener according to the invention which co-operate with fastening members other than screws, it is of course possible to provide or form other members which co-operate with the fastening member in any suitable manner. is possible.

Further variations are possible within the scope of the claims.

[Brief explanation of drawings]

FIG. 1 is an exploded view of an embodiment of a fastener according to the present invention. 2 is a side view of the fastener according to FIG. 1 in the assembled state; FIG. FIG. 3 is a sectional view of the fan according to FIGS. 1 and 2 in a mounted state, for example on a wall plate; 4 is a side view corresponding to FIG. 2 of another slightly modified embodiment of the fastener according to the invention; FIG. FIG. 5 is an enlarged cross-sectional view taken along line 5--5 of FIG. 4, but with the fastener attached. 6 and 7 are side and cross-sectional views of another embodiment according to the invention in uninstalled and installed states, respectively; FIGS. 8 and 9 are side and cross-sectional views of yet another embodiment of a fastener according to the invention in uninstalled and installed states, respectively. FIG. 10 finally shows a front view of another embodiment of the fastener according to the invention, but in a position prior to assembly into a ready-to-use fastener. 1...First element, 2...Sleeve, 2
'・・・Half sleeve, 3...Color, 4
... Strip, 5 ... First expandable body, 6 ... Strip, 7 ... Annular sleeve, 8 ... Wing, 9 ...Second element, 10...Second expandable main body, 11...
... Wing, 12 ... Lower cylindrical part, 1
3...hole, 14...nut, 15...
...screw, 18.... hole, 19...
Panel, 20...Object, 21...Tsubame IJ knob, 22...Strip, 23...Strip, 24...Screw hole, 25...・・・・・・
Hook.

Claims (1)

[Scope of Claims] 1. A fastp for attachment to a hole in a panel, comprising: a portion to be inserted into the hole; and a fastening portion to be inserted into the hole. a member; the portion is expandable to abut a contact surface of the panel disposed substantially perpendicular to the axis of the hole; and the portion comprises two bodies; The two bodies are arranged one behind the other in the direction of insertion of the fastener through the hole, and when one of the two bodies is expanded, the one body slides toward the other of the two bodies. possible, the two bodies are expandable in a direction transverse to the insertion direction, and in the expanded fastener the two bodies are in contact with each other; abut against the contact surface of said panel, and with respect to said contact surface, those of said two bodies outward:
A fastener characterized by being torn.