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Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses

An injection molding and locking connection technology, which is applied in the field of form-locking connection devices between metal wire parts and injection-molded bodies, especially for eyeglasses, can solve the problem of corrosion risk and increase in solder joints or solder joints. Large structural cost, increased fracture risk, etc.

Inactive Publication Date: 2007-03-28
SILHOUETTE INT SCHMIED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this fastening by means of parallel pins, the disadvantages are above all the increased structural outlay associated with brazing or welding, wherein the brazing or welding points are at risk of corrosion and when the wire part is fixed relative to the Increased risk of breakage when molded parts are bent, e.g. to fit the nose pads of eyeglasses

Method used

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  • Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses
  • Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses
  • Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses

Examples

Experimental program
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Embodiment Construction

[0013] According to the exemplary embodiment shown, the molded body 1 consists of a nose piece 2 of a spectacles (not shown in detail), the nose piece 3 of which is fastened to the nose piece 2 by means of wire elements 4 . For this purpose, the wire element 4 forms a hairpin end 5, the legs of which are indicated with 6 and 7 . An insertion recess 8 is provided in the nose piece 2 , which is adapted to the contour shape of the hairpin end 5 of the wire part 4 and accommodates the hairpin end 5 of the wire part 4 . As can be seen from FIG. 3, the plug-in groove 8 has a wall section 9 protruding towards the wedge-shaped region between the two legs 6 and 7, which extend until the connection of the two legs 6 and 7 of the hairpin end 5. The connecting arm is arranged so that this protruding wall section 9 is clamped behind by the connecting arm, which leads to the tension-resistant anchoring of the hairpin end 5 in the plug-in groove 8 . Due to the elasticity of the plastic mate...

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Abstract

An interlocking connection is described between a piece of wire (4) and a molded body (1) injected from plastic, especially for spectacles, with one end of the wire piece (4) being anchored in the molded body (1) by way of two sections of a fixing device which are arranged adjacent to each other. In order to provide simple constructional conditions it is proposed that the piece of wire (4) comprises an end (5) which is bent in a hairpin-like manner and whose legs (6,7) form a fixing means, and with the end (5) bent in a hairpin-like manner of the piece of wire engaging in an interlocking manner in a plug-in receiving means (8) of the molded body (1), which receiving means is adjusted to the hairpin-like shape of the end of the wire (5) and forms an undercut.

Description

technical field [0001] The invention relates to a form-locking connection between a wire part and an injection-molded body, in particular for spectacles, wherein one end of the wire part is anchored in two side-by-side sections of a fixing device. in the molded body. Background technique [0002] In order to fix one end of the wire on an injection-molded body, such as the wire part supporting the nose pads on the nose bridge of spectacles, it is known to solder or weld two wire parts on the bent end of the wire part. Parallel fastening pins, which are provided with barb-like annular projections in cross-section and engage positively in two recesses of the molded body. The fastening pin, which is pressed into the groove of the plastic molded body, cuts into the groove wall with its barbed ring-shaped projection, so that the fastening pin is anchored in the groove of the molded body in a tensile-resistant manner. Furthermore, the parallel fastening pins provide a rotationall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C5/12G02C1/02
CPCG02C5/126G02C1/02G02C5/12
Inventor 鲁珀特·施平德尔巴尔克
Owner SILHOUETTE INT SCHMIED