ES1298511U - SHUTTER TAPE DISC (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Blind band disc comprising: a front plate (1) and a rear plate (2) parallel, in which each shows a circular crown-like configuration, a channel (3) laterally delimited by the front plate (1) and the rear plate (2) intended to house the blind tape (7) that is rolled up inside it, in which the channel (3) is delimited below by a base (10) with a cylindrical configuration consisting of at least one slot (6) through which one end of the strap (7) is inserted, a central portion (4) that starts centered on the side of the back plate (2), being defined between the central portion (4) and the posterior plate (2) some radial nerves (9), characterized in that it additionally comprises at least one slit (8) defined in a radial rib (9), through which the tape (7) that has previously passed through the groove (6) of the channel (3) is introduced, as well as incorporating at least a lug (11) located in correspondence and facing the slit (8) around which the tape (7) forms a loop. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

SHUTTER TAPE DISC

OBJECT OF THE INVENTION

The present invention refers to a blind tape disc that has a special configuration to facilitate fixing the blind tape in a simple, fast and effective way, without the need to use screws or other fixing means or modes.

At the same time, it is intended that this fixing be safe and guarantee the durability of the joint, avoiding situations of wear or tear of the tape.

BACKGROUND OF THE INVENTION

Manual blinds are rolled up on a shaft that is linked mounted at one of its ends to a disc or pulley that provides rotation to the shaft and therefore to the blind, facilitating its rolling up or unrolling that determines its elevation or descent.

The manual traction element that facilitates the movement of the blind is a tape that is fixed at its lower end to a tape collector and at its upper end to the disc to which it is linked with fixing means that allow the tape to be rolled up. or unroll on the disk without separating from it.

Several solutions are known to join the blind tape to the disk, one of them contemplates that the disk incorporates a lateral slot through which the operator introduces the tape and then makes a knot in such a way that the knot abuts against the disc and prevent tape rollback, thus establishing the link between tape and disc.

This way of fixing is usually carried out on metal discs that can oxidize and that can produce cuts in the tape, causing it to break. On the other hand, the realization of these knots is not easy due to having to do this work in small spaces. size and difficult to access. In addition, the knot can cause friction between the disc and the side of the compact, causing operating problems in the shutter system, even generating blind jams.

Another fixing solution provides for the disc to incorporate a protrusion on the disc into which the tape is inserted. It is a slow assembly method and adequate fixing is not guaranteed, so the tape may tear.

Another alternative for mounting the tape to the disk resorts to screwing the tape against the disk, which entails the typical drawbacks of screwing, such as the oxidation of the screw or its tearing, among others.

DESCRIPTION OF THE INVENTION

The blind tape disc that constitutes the object of this invention satisfactorily solves the problem described above.

The disc is fundamentally configured by a central portion, preferably cylindrical, an octagonal insert and two parallel plates, one anterior and one posterior, which are perpendicular to the insert and the central portion, in which both plates show a circular crown-like configuration. , between which laterally delimit a channel intended to house the blind tape that is wound therein.

From the outer face of the front plate of the disc, the octagonal insert that engages in the axis of the shutter extends, and the central portion extends in the opposite direction, with radial ribs being defined between the central portion and the rear plate.

The intermediate channel is bounded below by a circular base in which one or two grooves can preferably be found, which are defined to give way to the tape during its initial positioning towards the interior of the disc.

Based on this basic configuration, provision has been made for the disc to incorporate at least one preferably vertical slot, in at least one of the radial ribs to allow the passage of the strip that has previously crossed the groove of the channel, as well as to incorporate at least a lug located in correspondence and facing each slit.

Preferably, it has been provided that each lug extends perpendicular to the inside face of the front plate and parallel to the central portion.

The disc configured in this way facilitates the fixation of one end of the blind tape, which is inserted by the operator first through the groove of the channel, then through the groove of the radial rib and then wraps around the lug like a loop until it comes out again through the radial nerve cleft. In this situation, when pulling and tightening the tape, the loop remains around the lug and trapped in the slit.

In a possible embodiment, the disc can incorporate two grooves, one groove in each of the corresponding proximal radial ribs, as well as two lugs, each one arranged opposite each groove. In this case, the tape can be fixed to one of the grooves and its lug or to the groove of the proximal radial nerve and its corresponding lug, depending on whether the tape penetrates through the groove of the most distant channel or through the groove of the channel. closest, forming a loop around one or the other lug.

Alternatively, in another assembly solution, the tape can be fixed by first penetrating around a groove in a radial rib, encircling its lug and forming a first loop, then it would come out from that same groove to enter the groove of the proximal radial rib to wrap around its nipple and come out again through this last slit, forming a second loop. This last solution for fixing the strap can be considered safer than the one mentioned above due to the formation of a double loop.

Subsequently, the tape must be wound at least once around the disk to achieve greater resistance by increasing the friction between the tape and the disk, so as to ensure a greater distribution of the load and less punctual effort against the area of the lacing against the lug and the slits.

The configured disc of this invention and the described assembly methods make it possible to ensure a firm and lasting bond between the blind tape and the disc during the rolling and unrolling operations.

DESCRIPTION OF THE DRAWINGS

To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical embodiment thereof, it is attached as an integral part of Said description, a set of drawings where, with an illustrative and non-limiting nature, the following has been represented:

Figure 1.- Shows an elevation view of the disc in the situation in which the tape is fixed on the disc forming a loop.

Figure 2.- Shows a rear side view of the disc in which the channel and its grooves can be seen.

Figure 3.- Shows an anterior side view of the disc with the tape rolled up.

Figure 4.- Shows an elevation view of the disc in the situation in which the tape is fixed on the disc, forming two loops.

PREFERRED EMBODIMENT OF THE INVENTION

In view of the figures, a preferred embodiment of the blind tape disk that constitutes the object of this invention is described below.

As can be seen in figure 2, the disc comprises a parallel anterior plate (1) and a posterior plate (2), each of which shows a configuration in the form of a circular crown, laterally delimiting a channel (3) intended to house the blind tape (7), represented in figure 2, which is rolled up inside, as well as having a central portion (4) that starts centered on the side of the rear plate (2), and a octagonal insert (5) represented in Figures 2 or 3 that starts from the front plate (1) intended to be attached to the axis of the blind, with radial ribs being defined between the central portion (4) and the rear plate (2). (9) that can be seen in figure 1.

Figure 2 shows that the channel (3) is limited below by a base (10) with a cylindrical configuration in which two slots (6) can be seen, which are defined to give way to the end of the belt (7) of the shutter to fix it to the disc.

In that same figure 2 it can be seen that the disc incorporates two vertical slits (8), one in each nearby radial rib (9), through which the tape (7) that has previously passed through the groove (6) of the channel ( 3), as well as incorporating at least a lug (11) located in correspondence and facing each slot (8), in which the lug (11) extends perpendicular to the front plate (2) and parallel to the central portion (4).

Figure 1 shows how the tape (7) is linked to the disc, which is previously introduced by the operator firstly through the slot (6) of the channel (3) represented in figure 3, then through the slot (8 ) of a radial nerve (9), then it wraps around the lug (11) like a loop until it comes out again through the groove (8) of the radial nerve (9), thus being linked to the disc.

Figure 4 shows the fixing solution in which the tape is first fixed by penetrating around a slit (8) of a radial rib (9), surrounding its lug (11) forming a first loop, and then coming out from that same slit (8) to enter another slit (8) of the nearby radial nerve (9) to wrap its lug (11) and come out again through this last slit (8) forming a second loop.

Claims (3)

1. - Blind tape disc comprising an anterior plate (1) and a posterior plate (2) parallel, in which each one shows a circular crown-like configuration, a channel (3) delimited laterally by the front plate (1) and the rear plate (2) intended to house the blind tape (7) that is rolled up inside it, in which the channel (3) is delimited below by a base (10) with a cylindrical configuration that consists of at least one slot (6) through which one end of the tape (7) is inserted, a central portion (4) that starts centered on the side of the posterior plate (2), with radial ribs (9) being defined between the central portion (4) and the posterior plate (2), characterized in that it additionally comprises at least one slit (8) defined in a radial rib (9), through which the tape (7) that has previously passed through the groove (6) of the channel (3) is inserted, as well as incorporating at least one lug (11 ) located in correspondence and facing the slit (8) around which the tape (7) forms a loop. 2. - The disc of claim 1 in which the lug (11) extends perpendicular to the front plate (2) and parallel to the central portion (4). 3. - The disc of claim 1 in which the grooves (8) are two, and each groove (8) is defined in a radial rib (9), said radial ribs (9) being close to each other, and the lugs (11) are two, one facing each groove (8).