ES1059359U - Shutter for shutter (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Shutter for shutter, comprising an initial metal structure formed by an elastic band with anchoring means to a roller for winding the slats of a blind and a rigid crossbar to an end blade of said blind, cross linked to the strip in an articulated and perpendicular way; characterized in that it incorporates a piece of injected plastic material (2) that covers most of the elastic band (1), that plastic piece (2) including an angular extension (9) that starts from one end of said piece of plastic ( 2) in proximity to the rigid crosspiece (3); all this in order to avoid contact of the metal strip with the winding roll and also to prevent the slats from contacting said winding and striping roller. (Machine-translation by Google Translate, not legally binding)

Description

Strap for blind.

Object of the invention

The present invention, as expressed in the set forth in this specification, refers to a tie for blind that has the utility of serving as a link between an extreme slat of the blind and the corresponding roller of winding that blind, roller that is evidently inside the respective blind drawer.

The object of the invention is a coating plastic part of the strap to avoid direct contact of metal parts in order to avoid wear and deterioration essentially in the slats of the blind and also in the roller of winding

Background of the invention

Nowadays different media are known of union and bonding between an extreme slat of a blind and the respective winding roller of said blind.

Among these means, it is worth mentioning those that they consist of a metal brace in the form of "T", whose branch vertical is formed by an elastic and flexible strap, while the crossbar constitutes a rigid element that is associated with the respective extreme lama.

Direct contact of the metal tie with the winding roller and with the blind produces friction and wear of the roller and especially of some louvers of the blind, that after a while it can cause the breakage of these lamas or at least a manifest deterioration.

Description of the invention

To achieve the objectives and avoid drawbacks mentioned in the previous sections, the invention proposes a blind strap that comprises in principle a T-shaped metal structure, whose crossbar or branch horizontal is a rigid element that is anchored to the guide of a slat extreme blind, while the vertical branch is a strap to flexible and elastic element mode that is anchored at its end free in a groove of the winding roller.

The association of the roller blind winding is done by two braces arranged in symmetrical position with respect to the width of the blind. He Strap is linked to the crossbar in an articulated way.

Starting from this premise, the novelty of the invention focuses on a piece of plastic material that covers the, most of the elastic strap, with the exception of its extreme stretch free where it is attached to the winding roller, avoiding so chafing on the roller and especially on the slats.

This plastic piece is preferably injected on the elastic strap, although it could also be a piece independent that later would be fixed to the elastic strap. In In any case, the plastic part is fixed to the strap immovable.

On the other hand, the plastic piece is characterized, because it includes an angular extension close to the area of linking the two parts of the strap.

This angular extension serves as an element of highly effective protection so that the slats do not come into contact With the metal.

The elastic strap incorporates holes that they serve to center it in the mold during the injection of the material plastic.

Said strap incorporates different points of clamping on the mold so that the metal part does not move inside said mold.

In turn, the plastic piece incorporates other holes formed during injection to prevent such a piece Plastic move.

Next to facilitate a better understanding of this descriptive report and being an integral part of the same accompany some figures in which with character illustrative and not limiting the object of the invention.

Brief description of the drawings

Figure 1.- Shows a plan view of the blind strap, object of the invention.

Figure 2.- Shows a profile view of the tight.

Figure 3.- Shows another view in profile sectioning of the strap of the invention.

Description of the preferred embodiment

Considering the numbering adopted in the figures, the blind strap is determined from a strap elastic 1 partially covered by a piece of material plastic 2 and a rigid crossbar 3 that connects to the strip 1 by one of its ends articulated and perpendicularly in a shaft portion 4 of cross member 3, through which the set of the strap to one of the extreme slats of the blind, while the other end section of the elastic strap 1 incorporates two facing cuts 5 to facilitate anchoring in a groove of the winding roller.

Partial coating of strip 1 is performed by plastic injection by previously introducing said strap Inside a mold

For this, the strap 1 has small holes 6 to immobilize it within the mold, avoiding unwanted displacements of said strap
one.

The strap incorporates other holes 7 that are they will cover the plastic material, thus ensuring the fixing immovable plastic part 2.

The strap incorporates other larger holes 8 than They simply serve to center it.

On the other hand, the plastic part 2 incorporates a trapecial extension feature 9 that starts from the end of said plastic part 2 as a continuation thereof forming angle, extension that is close to rigid crossbar 3 of the tight.

This trapezoidal extension 9 serves as protection to more safely prevent slats from coming into contact with the metal of the winding roller.

Claims (2)

1. Blind brace, comprising an initial metal structure formed by an elastic strap with means for anchoring to a roller winding the slats of a blind and a rigid crossbar connecting to an extreme slat of said blind, cross member linked to the strap articulated and perpendicularly; characterized in that it incorporates a piece of injected plastic material (2) that covers most of the elastic strap (1), including that piece of plastic (2) an angular extension (9) that starts from one end of said plastic piece ( 2) in proximity to the rigid crossbar (3); all this in order to avoid the contact of the metal strip with the winding roller and also prevent the slats from contacting the said winding and strapping roller. 2. Blind rod according to claim 1, characterized in that the plastic part (2) is fixed to the strip (1) by means of portions of plastic material that occupy through holes (7) of said elastic strap (1).