DE29701753U1 - Three-part or five-part, screwless glasses frame made of sheet metal - Google Patents

Description

Description:

Three-part, screwless spectacle frame made of sheet metal (optionally VA/TI/AL) with integrated spring hinge plug-in system (FFS), with formally integrated locking clasp.

State of the art:

With a few exceptions, standard glasses are equipped with a hinge, one part of which is attached to the frame with pins and the other part is shot into the temple (in the case of plastic glasses). Both parts are pushed into one another and screwed together. The opening and closing of the frame is achieved with a locking block in most glasses suitable for prescription lenses. Exceptions are historical glasses in which the screws are passed through the lens; plastic glasses in which the lens is pressed into the elastic frame, or more unconventional solutions such as the Nyler thread in which the lower part of the lens is held in place by a nylon thread.

Problem:

The invention specified in claim 1 is based on the problems

a) to create a spectacle frame in which the solution for the joint connection is already integrated into the frame or the temple, and in addition, conventional types of connection such as screws, bolts, rivets or the like are dispensed with.

b) to create glasses that require as little production effort as possible (according to the papercraft principle: the glasses are cut out using laser technology, like a papercraft sheet).

c) to develop a new, reduced formal language determined by technology and based on the idea of renunciation, which has not existed in this form before (formal-aesthetic concept).

e) to develop a locking mechanism for opening and closing the frame that formally and functionally meets the concept of simplicity described in c).

Solution:

These problems are solved with the features listed in claims 1 and 2.

Benefits achieved:

1. Due to the simple tension-based connection, the user is able to easily and quickly change shape variations of the bracket without the need for specialist assistance.

2. Convenient and quick replacement of lenses without tools.

3. Minimizing the manufacturing process.

4. By applying the papercraft principle during production (cutting out from the surface), formal variations (which always include the FSS) are possible without great technical effort.

5. Creation of a new, technically determined formal language based on the idea of renunciation (reduction).

Examples:

Three examples (A, B, C) are explained in Figures 1 - 8. They show:

Fig. 1, Example version A, connection frame/bracket (spring hinge plug system, FSS) in the unfolded (open) state.

Fig. 2, Example version A, connection frame/bracket (spring hinge plug system, FSS) in the closed state.

Fig. 3, Example version B, connection frame/bracket (spring hinge plug system, FSS) in the unfolded (open) state.

Fig. 4, Example version B, connection frame/bracket (spring hinge plug system, FSS) in the closed state

Fig. 5, Example version C, connection frame/bracket (spring hinge plug system, FSS) in the unfolded (open) state, with integrated locking clasp.

Fig. 6, Example version C, connection frame/bracket [spring hinge plug system, FSS) in the closed state, with integrated locking clasp.

Fig. 7, embodiment version C, part of a spectacle frame (open) and the locking clasp before sliding onto the connecting element.

Fig. 8, Example version C ₁ Part of a spectacle frame (closed) and the locking clasp after sliding onto the connecting element.

Regarding figures 1 and 2 (version A, without locking clasp and without connection element bent backwards):

The two outer leaf springs 1 and 3 of the bracket 4 are bent into a U-shape at their ends in order to engage the recesses 6 and 7 of the socket part 5 (joint plane). The middle leaf spring 2 is lifted out of its original plane in the bracket. Its end is in the tacked recess 8 of the socket part 5, the right side of which (that of the recess 8) also forms the stop of the bracket 4 when opened. In this state, a tensioned, stabilizing triangular constellation is created between the starting points of the leaf springs 1, 2 and 3 and the end points of the leaf springs in the recesses 6, 7 and 8 of the socket 5.

After folding the bracket 4, the middle leaf spring 2 is immersed in the lashed recess 8; its end is now located behind the socket part 5, not visible to the observer. In this state, the spring tension of the middle leaf spring 2 presses the bracket 4 against the socket 5. In this state, the U-shaped bends of the outer leaf springs 1 and 2 stabilize the bracket in the horizontal plane.

Regarding figures 3 and 4 (version B, without locking clasp and with connection element bent backwards):

The ends of the outer leaf springs 1 and 3 of the bracket 4 grip from behind through the recesses 6 and 7 onto the curved connecting element 5 belonging to the frame. The middle leaf spring 2 grips from the front onto the element 5. The joint plane is formed by the recesses 6 and 7. In this state the folds at the end of the connecting element 5, in the illustration directly next to the leaf spring 2 engaging from the front, prevent play in the horizontal plane.

After folding, the middle leaf spring 2 is lifted out of its original plane and slid over the recess 8. In this state, the bends of the leaf springs 1 and 3 stabilize the bracket 4 in the horizontal plane and, together with the leaf spring 2 under tension, form the above-mentioned stability-creating triangular constellation, which prevents the bracket from slipping out.

For figures 5, 6, 7 and 8 (version C, with locking clasp and with connection element bent backwards):

Fig. 5 (as well as figures 6, 7 and 8) shows a further embodiment of the principle already shown in figures 3 and 4.
Fig. 5 describes the same situation as Fig. 3, with the difference that in this embodiment the previously mentioned locking clasp 10, which serves to keep the frame closed, has been added. It should also be noted that the ends of the leaf springs 1 and 3 have different embossings (bends) than those shown in Figs. 3 and 4, but are identical in their function.

Fig. 6 describes the same state as in Fig. 4, with the difference that here too the locking clasp 10 has been added. Here too the leaf springs 1 and 3, which are shaped differently in this embodiment, take on a stabilizing function with regard to the play in the horizontal plane.

Fig. 7 shows a section of the opened spectacle frame 5 (the slot 9 indicates that it is open), as well as the locking clasp 10 before it has been pushed over the still open spectacle frame 5. The recesses 6 and 7 on the backward-bent connecting element already mentioned in Fig. 3 can be clearly seen here.

Fig. 8 shows the spectacle frame 5 after it has been closed by sliding the locking clasp 8. The previously open slot 9 is now only visible as a line.

Additional note:

The embodiment shown in Figures 1 and 2, version A, allows a construction variant that is characterized by a slot (as in Figures 8 and 9), starting from the inner frame edge, through the recess "8 to the outer edge. (Imagine a horizontal cut that would run exactly in the middle of the frame part 5 shown in Figure 1, i.e. would end exactly in the middle of the outer edge between the recesses 6 and 7). This variation ensures that the frame 5 can be opened in order to make it easier to change the lenses (as in Figures 5, 6, 7 and 8). The decisive factor in this variant is that it does not require a locking clasp, since its function is already fulfilled by the engagement of the two outer leaf springs 1 and 3. The shearing effect that is caused by up and down movements in

horizontal plane when opened is prevented by the groove ground into the edge of the glass.

What all embodiments have in common is that the middle leaf spring 2 is over-tensioned in the opposite direction so that in the "relaxed" states there is still enough tension to hold the frame 5 and brackets 4 tightly together.

Claims (1)

• · Harald Gottschling Solmsstr. 38 10961 Berlin Philipp Haffmans RevalerStr. 12 10245 Berlin Application for protection claims (two-part version) 1. Three-part or five-part screwless spectacle frame made of sheet metal (optional: VA/Tl/AL) with integrated hinge (spring hinge plug-in system). characterized, that the hinge (the connection between the bracket and the frame) is based on the principle of the material tension contained in the metal, created by two longitudinal slots at the end of the bracket, which result in three free-standing leaf springs, which, through certain bends, form a connecting element that can be connected under tension to a specially shaped tab on the frame, but remains movable (foldable) and thus fulfils the function of a hinge. (F.S.S.) or in other words: that the temples of the glasses frame have two longitudinal slots that are open on one side, so that the temple ends are divided into three parts. Various recesses and bends ensure that the temple can engage in the glasses frame, thus creating a hinge function with an integrated spring. (F.S.S.) Hinge (spring hinge plug-in system. FSS) according to protection claim 1
Characterized, that the opening and closing of the frame, which plays an important role in changing lenses, is done by a locking mechanism developed by us.