BR202013003007Y1 - CONSTRUCTION PROVISION APPLIED IN ROLDANA - Google Patents

Abstract

Sheave construction arrangement, as described in the report and as shown in the accompanying illustrations, is characterized by an innovative building arrangement introduced into a sliding door sheave built into the door, and its constructional arrangement has been improved to provide improved manufacturing and use. object, having a new layout arrangement of some of its internal components.

Description

The present Utility Model patent refers to an innovative constructive arrangement introduced in a sliding door pulley used built into the door, its constructive arrangement being perfected in order to improve the manufacture and use of the object, with a new layout arrangement. some of its internal components.

State of the Art:

The state of the art, the reason for the present improved construction, is known by document MU8701339-8, by this same holder, deposited on 09/06/2007, entitled Constructive Form Employed Pulley, which claims: 1 - CONSTRUCTIVE FORM APPLIED IN PULLEY, characterized by the fact to comprise an extruded housing (1), where a metallic arm (2) is inserted that is attached to a pin (3) in the mentioned housing, and that arm is inserted in that pin by the bearing (4), so that the arm (2) can move around the pin (3), where the weight of the door compresses a pulley itself (5) which is attached to an axis (6) attached to the arm (2), this pulley (5) rests on the sliding rail in the lower door box, where a spring (7) that is attached to a rear pin (8), can apply pressure against the arm (2) in a recess (9) at the top ( 10) of said arm (2), and this pressure is opposed to the weight of the door on the pulley (5), making the damping and preventing the

2/8 derailment. 2 - CONSTRUCTIVE SHAPE USED IN PULLEY, according to claim 1 and characterized by the fact that the plastic housing (1) contains a side slot (11), where a key (12) is inserted that can move back and forth , which locks the displacement of the arm (2) by introducing this key (12) in the slot (13) of the arm (2). 3 - CONSTRUCTIVE SHAPE USED IN PULLEY, according to claim 1 and characterized by the fact that the pulley also has a height adjustment mechanism for the arm (2) and wheel (5), where a screw (14) passes through a hole (15) in the housing (1), so that a nut (16) inserted in a slot (17) adjusts the height, causing the screw to push down or raise the arm (2), by through a stop (18). 4 CONSTRUCTIVE SHAPE USED IN PULLEY, according to claim 1 and characterized by the fact that the nut (16) when rotated causes the screw (14) to push down or release the arm (2) upwards, causing the wheel (5) to go up or down on the rail, increasing or decreasing the distance in relation to it.

As difficulties present in this model, we can highlight some points:

- the constructive shape of the spring (7), in some cases, due to the natural and continuous movement, provides its detachment;

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- the fact that the key (12), which works embedded in the side slot (11), is so prominent in relation to the whole of the piece that it sometimes causes difficulties in passing through the sliding doors, or even comes off natural movement of the set, detaching the caster.

The fact of generating maintenance or even changing the set brings inconvenience to the user, although these inconveniences do not entail risks in relation to safety.

Inventive Concept:

This Constructive Applied Pulley Arrangement proposes practical improvements, as it is based on the inventive concept of functional and manufacturing improvement in relation to the state of the art of the object.

For this purpose, the present object was developed from the difficulties present in the previous models, mainly regarding the conformation and functioning of the spring responsible for the damping and the constructive improvement of the fixing key or the set lock. Other improvements were also included, such as a redesign of the housing providing the use of less material for its manufacture, adaptation of the housing shape in order to provide greater ease of installation and increase the area of height adjustment of the set.

Thus, an improvement in the construction of the device was developed, resulting in a device with easier assembly,

4/8 with better continuous operation, taking into account the natural vibration caused by the repetitive movement, avoiding situations of detachment of the rotation, with greater durability and safety;

Benefits:

The present proposal for a new Constructive Arrangement Applied to a Pulley has the following advantages regarding the state of the art of the object in question:

• Improved operating conditions for the damping and anti-skid spring, which consists of modified conformation and now also has a sliding bed, preventing its detachment;

• Better functioning of the fixing key or lock that now has easier fitting and has greater resistance, avoiding situations of unlocking the caster and disassembling the set during use by releasing the key;

• Improved performance of the set during the crossing of doors, since the fixing / locking key is close to the set, not constituting an obstacle to the crossing, also avoiding its detachment due to excessive friction on the door;

• Easier and faster height adjustment, as the adjustment area has been increased;

5/8 • Easier device assembly, adjustment and installation of the spring, as well as its maintenance, obtained by the adequacy of the housing construction;

• Greater safety during use, as situations of disarming the set are avoided;

• Greater safety during use, since the situation of loosening the spring is avoided;

• Greater device durability; and • Less use of material for the construction of the housing.

Illustrations:

In order to facilitate research and provide an understanding of this patent, as recommended in the report, according to a basic and preferred form of realization prepared by the applicant, reference is made to the attached illustrations, which integrate and subsidize this descriptive report where:

FIG. 01 - shows the left side perspective of the pulley without rotation;

FIG. 02 - shows the right side perspective of the pulley without rotation;

FIG. 03 - presents the posterior perspective of the pulley;

FIG. 04 - shows the rear view of the pulley;

FIG. 05 - shows the front view of the pulley; and

FIG. 06 - shows the exploded perspective of the pulley.

Description:

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As can be seen from the figures presented, the set consists of the housing (1) which has the pin (2) where the rotating arm (3) is inserted through the bearing (4), so that the pin (2) determines the axis of rotation of the arm (3).

The rotating arm (3) contains in its central part the pin (5) where the caster (6) is fixed, and, at its opposite end to the bearing (4), it contains the stop (7) provided with a projection (8) that makes it possible to fit the lock (9). When the lock (9) is in the open position (near the end of the housing) the rotating arm (3) has its free movement. When the lock (9) fits in the projection (8) of the rotating arm (3) (with movement in the opposite position), it is without possible vertical movement.

The lock (9) is composed of the circular base (10) of flattened conformation followed by the pin (11) provided with a tooth (12) where the protrusion (8) of the stop (7) is inserted in order to promote the locking or not of the rotating arm (3). The fact that the circular base (10) is flattened allows it to pass through the leaves of the furniture doors, with less space available between them, without scraping the pulley.

The lock (9) is fitted and moved horizontally in the oblong hole (13) of the housing (1) which has a slide bed of the circular base (10) of the lock (9).

The rotating arm (3) has in its upper part the tooth (14) where the torsion spring (15) fitted with a coupling (16)

7/8 to form a bed for its movement. The torsion spring (15) is fixed to the rear pin (17) internally to the protection (18) that contains the opening (19) in order to allow the installation of the spring (15) and the hollow parts (20) that allow the reduction the amount of material used.

The torsion spring (15) puts pressure on the rotating arm (3), moving on the tooth (14), in order to counteract the weight of the door on the caster (6) avoiding the door derailment.

The screw (21) is used to adjust the height of the rotating arm (3) and caster (6) assembly, which is inserted in the constant hole in the protection (18), passing through the nut (22) and the support (23) ) in order to determine the travel of the stop (7). The support (23) has an L shape in order to allow the stop (7) and lock (9) assembly to be moved below it.

The height adjustment is carried out by a spanner when moving the nut (22) through the groove with chamfered ends (24), with the chamfered ends allowing greater movement of the key for height adjustment more quickly.

The fixing of the device is done by screws placed in the holes (25) contained in the housing, the same being fixed embedded in sliding doors in furniture.

Conclusion:

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In this way, the Constructive Arrangement Applied to the Pulley is subsidized by unprecedented technical and functional characteristics, as can be seen in the attached figures and understood in the specification, thus deserving the legal protection sought.

Claims (1)

CLAIM 1. CONSTRUCTIVE ARRANGEMENT APPLIED IN PULLEY, as described in the report and according to the attached illustrations, it is comprised of the housing (1) provided with a pin (2) for fixing the rotating arm (3) through the bearing (4), the rotating arm being (3) has the pin (5) for fixing the caster (6), the device being fixed by screws placed in the holes (25) characterized by the stop (7) provided with a protrusion (8) to fit the lock (9), which consists of the flattened circular base (10) followed by the pin (11) provided with a tooth (12) for fitting the protrusion (8), the lock being fitted into the oblong hole (13) with a sliding bed for the base circular (10); the rotating arm (3) has the tooth (14) for fitting and moving the torsion spring (15) provided with a latch (16) fixed on the rear pin (17) inside the protection (18) that contains the opening (19) and the hollow parts (20); the height adjustment of the rotating arm (3) is made by means of a wrench moving the nut (22) through the groove with chamfered ends (24), determining the position of the screw (21) inserted in the protection (18) and support (23) in L, under which the lock (9) is adjusted next to the stop (7).