JPS616417A - Method of fixing sheet material layer to stud and stop collar for said method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a method and a fastening collar therefor for fixing a layer of sheet material to a stud, and more particularly to a layer of sheet material, such as a carpet to the basic support of a motor vehicle. It concerns a fastening collar and the method of using the fastening collar for this purpose.

Cartwheel US Pat. No. 3,702,024 discloses a fastening collar. The method described therein is used for assembling a rigid plywood lining to the metal interior walls of a loading platform. A large hole is drilled in the plywood, and after placing the plywood in place on the wall, a smooth stud is welded to the wall in the hole, after which the plywood is fixed with a fastening collar, i.e. In other words, it is held in place by a spring retainer that is pressed into the stud. The spring retainer is stated to be made of sheet metal, is generally conical in shape, has a flange at the wide end and fingers for gripping the stud at the narrow end, and can be installed with a suitably shaped impact tool. can.

Although the specification of said patent states that the retainer can be removed with a similar tool, there is no clear explanation as to how this is done, and in any case:
Since it is stated that replacing the cage requires a new cage, it is clear that the cage will become unusable.

West German Utility Model No. 8,224,277 also describes a fastening collar for use with studs.

This collar is removable and is suitable, for example, for fixing a carpet and optionally an insulating cloak to a basic support, such as the bonnet or bottom plate of a motor vehicle. The fastener of German Utility Model No. 8,224,277 is also used in other applications where flat objects must be removably attached to various supports.

The above proposals are suitable for fixing sheet materials to supports, whether hard or soft, but all of the specifications are suitable for fixing sheet materials to supports that are hard or soft, but none of the specifications are suitable for fixing sheet materials to supports that can be easily fixed to other underlying sheets. However, there is no disclosure of a method by which the top sheet can be easily removed without disturbing the top sheet. Ease of removal is particularly desirable if the top sheet needs to be removed from time to time for cleaning or replacement, and the flexibility or resiliency of the underlying layers ensures that they remain permanently fixed. It is particularly desirable for

The object of the present invention is to provide an improved method and a fastening collar for this purpose by which several layers of flat flexible material can be independently fixed to studs on a support. It is to provide.

Means for Solving the Problem The above objects involve welding threaded studs to a surface, attaching one or more layers of sheet material to said surface by inserting the studs into holes in the sheet material;
A fastening collar having a funnel-shaped body with means for fixing the collar to the threaded portion of the stud on the narrow end and a flange on the wide end for overlying and retaining the layer of sheet material; push it into the stud first,
and attaching at least one more layer of material and at least one more retaining collar such that the body of the retaining collar (i.e., each retaining collar) significantly extends into the body of the previously attached collar. This is achieved by the present invention which provides a method for securing multiple layers of sheet material comprising:

The present invention also provides a fastening collar for securing the sheet material layer when carrying out the aforementioned method.

This fastening collar has a funnel-shaped body of circular cross section with fastening means at the narrow end and a retaining flange at the wide end. The fixing means comprises elastic fingers that allow the collar to be pushed into and unscrewed from the threaded portion, and the fastening collar further facilitates the collar to be unscrewed from the stud. It is characterized by the presence of contact surfaces which are diametrically opposed to each other and can be accessed from the inside of the body so as to be able to be hooked with a suitable tool.

The aforementioned fastening collar is preferably molded in one piece from a thermoplastic polymeric material. An opening can be provided in the wall of the funnel-shaped body, the edge of which provides a contact surface that allows the collar to be rotated and removed. The elastic fingers, which are the fixing means of the fastening collar, are arranged symmetrically around the central axis of the fastening collar, and the guide ribs, which serve to center the collar with respect to the stud when the fingers are hooked onto the threaded part of the stud, are arranged symmetrically around the central axis of the fastening collar. The elastic fingers can be arranged alternately around the central axis.

The fastening collar according to the invention uses welded studs to connect several layers of flat flexible sheet material, e.g.
Insulating panels etc. can be fixed to the foundation support. The unique advantage of this fastening collar is that the above material layers can be stacked independently. In reality, this is
When the topmost layer is removed, it means that the layers below it remain firmly attached to the foundation support, making it easy to remove the topmost layer for cleaning, for example. , or when replacing with a new one, 1. There is no need to remove the entire layer.

BRIEF DESCRIPTION OF THE DRAWINGS In order to illustrate the invention in its various aspects, a fastening collar and a method for independently securing layers of sheet material to a stud by means of a plurality of fastening collars will now be described with reference to the accompanying drawings. This illustrative color and illustrative method of using it are chosen for illustrative purposes and are not intended to be limiting.

EXAMPLE The illustrative collar 1 shown in FIG. 1 has a funnel-shaped null body 2 with a conical wall 4. The collar 1 shown in FIG. Although basically funnel-shaped, the walls of the collar according to the invention may also have a cross-section other than circular, for example polygonal, if it is envisaged that the collar at the top of the stack will be unscrewed. , polygon colors are generally not recommended. The funnel-shaped structure of the body makes it possible to arrange the collars on the studs in a space-saving way and at the same time to securely hold them, so that a number of collars can be securely mounted on top of each other in the form of a stack.

The collar 1 has, at the narrow end 11 of its body 1, means 10 for fastening to a stud. Collar fixing means 10 in FIG.
consists of fingers 7 (see FIG. 1b) arranged alternately with guide lips 6 in a manner known in the prior art. The purpose of the fastening means 10 is to form a removable joint with the ridge of the stud. Fixing means 1
It is clear that 0 can be of any other suitable construction as a relative element of the stud used for that purpose. It is also left to the expert in the field to choose whether the fixing means 10 are arranged inside the cone 2 as shown or inside a separate cone, for example a downwardly extending cone.

The wide end 3 of the cone 2 is provided with a retaining flange 12 . In the case of fasteners with a conical body, this shoulder is in the form of a circular ring with a slightly concave radial cross-section on its underside, thus ensuring that the flange 12 lies flat around its periphery. , it is possible to apply a relatively large pressure to the object to be fixed.

When using a collar with a conical body or polygonal cross section, the retaining flange 12 may extend over its entire circumference or may be limited to a small portion. There may also be applications in which it is not necessary to have a continuous flange, for example it is sufficient or even desirable to have only a flange along the long side of a pyramid of rectangular cross section.

The funnel effect 4 of the collar according to the invention is primarily intended to connect successive flanges to fastening means. Wall 4 does not have to be continuous. By interrupting the wall 4 with cutouts 5, it is possible to connect the flange, the fastening means and the closed structure or skeleton only. Both the discontinuous flange and the discontinuous wall contribute considerably to material savings and, as a result, cost savings, especially in the mass production of collars for the automotive industry. FIG. 2 shows the collars 1 stacked on top of each other and attached to threaded studs 13. When carrying out the illustrative method, the collar includes the insulation mat 14, the cushioning layer 15, and the carpet 16.
are independently fixed to a basic support 17, for example a vehicle body. In such cases, it is clear that the colors disclosed herein can be used as per the requirements of the occasion. For example, only the insulation mat 14 is fixed and the other layers 15, 16
It may be necessary to omit it.

It is also clear from FIG. 2 that there is theoretically no limit to the number of fastening collars that can be stacked on top of one another. If several layers are to be fastened to each other, the studs must be lengthened accordingly, but they should not exceed the total thickness of the material placed on the support.

When carrying out an exemplary method of making an assembly according to the invention, after each material layer 14, 15, 16 has been attached to the base support around the stud 13, the collar 1 is pressed down on the stud 13; Each layer is fixed independently.

However, with a suitable tool applied to the contact surface provided by the edge of the opening 5, the top collar can be easily removed and the top layer 16 removed without disturbing the layers 15, 14 below. is possible.

[Brief explanation of drawings]

FIGS. 1a, 1b and 1c are respectively partially sectional front, top and side views of a fastening collar according to the invention, and FIG. FIG. 1... Clasp collar 2... Funnel shaped body (cone) 3...
Wide end 4... Conical wall 5... Opening (cutout) 6... Guide lip 7... Finger 10... Fixing means 11.・・・・・・
・Narrow end 12... Holding flange 13...
・・・Threaded stud 14 ・・・Insulation mat 15 ・・・Buffer layer 16 ・・・Carpet 17 ・・・Engraving of foundation support drawings (changes in content) None Fig. 1o 10 Fig. 1b Fig. 1c Fig. 2 Fig. 1 Indication of the incident 1982 Patent Application No. 17483
No. 1; 3. Relationship with the case of the person making the amendment Applicant Name NiniSm Corporation 4, Agent JP 61-6417 (5)

Claims (4)

[Claims] (1) Welding a threaded stud to a surface; attaching one or more layers of sheet material to said surface by inserting the stud into a hole in the sheet material; and a collar on the threaded portion of the stud at the narrow end. pushing a fastening collar, narrow end first, into the stud, the fastening collar having a funnel-shaped body having means for securing the fastening collar and a flange on the wide end side for overlying and retaining the sheet material layer; At least one more layer of material and at least one more
A method of securing a layer of sheet material to a surface, comprising: attaching a number of fastening collars. (2) having a funnel-shaped body of circular cross section with fixing means at the narrow end and a retaining flange at the wide end, said fixing means being capable of pushing the collar into the threaded portion and removing it therefrom; comprising resilient fingers, and the collar further being accessible from the inside of said body and diametrically opposed to each other and hooked with a suitable tool to facilitate unscrewing of the collar from the stud. A fastening collar for fixing a layer of sheet material to a stud when carrying out the method according to claim 1, characterized in that the collar has a contact surface that allows for a contact surface that allows for contact with the stud. (3) A fastening collar according to claim 3, characterized in that the contact surface is obtained by the edge of an opening provided in the wall of the funnel-shaped body. (4) An assembly comprising a plurality of layers of sheet material secured to a threaded weld stud by the method of claim 1.