Buckles – buttons – clasps – etc. – Clasp – clip – support-clamp – or required component thereof – With specific mounting means for attaching to rigid or...
Reexamination Certificate
1999-07-08
2001-04-03
Sakran, Victor N. (Department: 3626)
Buckles, buttons, clasps, etc.
Clasp, clip, support-clamp, or required component thereof
With specific mounting means for attaching to rigid or...
C024S289000, C024S297000, C024S453000, C411S508000
Reexamination Certificate
active
06209178
ABSTRACT:
TECHNICAL FIELD
The invention relates to a fastening clip for connecting two plate-shaped structural parts.
BACKGROUND ART
Such fastening clips are known in the most varied of design embodiment forms and generally include a head that comprises a conical flange which more or less sealingly bears against the facing side of the structural part and is axially deformable in a limited manner in order to ensure a height compensation. On the head of the fastening clip there is formed a shank which consists of two or more legs which may be radially sprung and which at the free end run out into an introduction end and in each case comprise a shoulder radially on the outside, with which a hole edge is gripped from behind.
Such fastening clips are normally injection moulded as one piece from plastic material. Their attachment often requires a considerable application force which however is mostly smaller than the holding force.
It is the object of the invention to provide a fastening clip for connecting two plate-shaped structural parts comprising fastening holes, which by way of a slight finger pressure may be mounted in the fastening hole, which at the same time ensures a relatively high holding force and which furthermore may be unloseably preassembled in a structural part with an oblong fastening hole. Furthermore the fastening clip is manufactured with minimal expense.
SUMMARY OF THE INVENTORY
With the fastening clip according to the invention there are spaced four legs arranged in the circumferential direction by about 90°, which are separated by relatively wide slots extending from the flange to the introduction end. The individual legs comprise on the outer side a shoulder with a maximum diameter which is somewhat larger than the smallest diameter of the oblong hole. Preferably, the shoulders are circular in cross section as also the legs below the shoulders in cross section have a circular contour so that a type of basket is formed which in relation to the leg sections above the shoulders in the direction of the head is relatively stable, by which means a high holding force is created. The thin leg sections above the shoulders permit a simple spring deflection of the legs on introducing into the fastening hole so that the pressing in force is conceivable small. If the introduction or assembly force is for example maximumly 60N, then accordingly the holding force after locking into the fastening hole is at least 250 N.
For the series manufacture of such a fastening clip it is advantageous when the head comprises an axial oblong opening which is aligned with two diametrically arranged slots in the shank, wherein the ends of the opening lie on an axis to the shaft axis which extend through neighbouring circumferential ends of neighbouring shoulders. In this manner a core may be introduced over the oblong hole into the shank region of the fastening clip which at the same time forms two diametrical slots between the legs. The two other diametrically oppositely lying slots are then created with the help of the sliders of the injection moulding mould.
According to another formation of the invention above the flange there is formed a cup-shaped portion which on the upper side is deepened in a concave manner. In this manner the assembly of the fastening clip may be simplified by finger pressure.
REFERENCES:
patent: 4716633 (1988-01-01), Rizo
patent: 5301396 (1994-04-01), Benoit
patent: 5319839 (1994-06-01), Shimajiri
patent: 5704753 (1998-01-01), Ueno
patent: 5850676 (1998-12-01), Takahashi et al.
patent: 1444846 (1976-08-01), None
Sbongk Albert
Wiese Heiner
ITW-Ateco G.m.b.H.
Lowe Hauptman Gilman & Berner LLP.
Sakran Victor N.
LandOfFree
Fastening clip does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fastening clip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fastening clip will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2546148