KR20020062807A - Hairdryer nozzle with variable configuration - Google Patents

Abstract

The invention concerns a nozzle, detachable or not, designed for a hairdryer, which can be easily modified from a first configuration supplying a hot air stream with a substantially circular cross-section to obtain an air stream substantially rectangular, that is wide and flat, in cross-section. Said nozzle consists of a ferrule (3) provided with two slots (5) capable of pivoting relatively to geometrical axes (7) and flaps (9) capable of producing a pivoting motion relatively to geometrical axes (11) perpendicular to the pivot pins (7) of the slots (5).

Description

HAIRDRYER NOZZLE WITH VARIABLE CONFIGURATION}

Electric hair dryers are heated by electrical resistance and are designed to provide an air flow delivered by a fan-equipped hair dryer for this heating.

The actual design of the hair dryer, in particular the cylindrical circular-section geometry that houses the rotating fan, creates an airflow of circular cross section.

In some cases, however, the user wants a relatively wide and flat laminar flow air.

Therefore, it is common practice to install a nozzle at the discharge end where air flow is generated. The nozzle usually ends with a long, rectangular, flat outlet to produce a wide, flat laminar air.

This kind of nozzle can be permanently installed in the outlet opening of the hair dryer, but is generally removable.

In the case of a detachable nozzle, it is inconvenient for the user to find the spare part that is lost, or at least difficult to purchase.

When the hair dryer is in use, the user must remove and replace the nozzle as the circular and wide and flat streams are found to be needed alternately. This is inconvenient to be done quickly, especially when the nozzle is hot.

The prior art includes a number of techniques relating to the various types of air flow from hair dryers. French Patent No. 2 640 857 to Bontoux describes a nozzle arrangement consisting of a flexible material. The exchange of nozzles results in a mechanism that replaces the cylindrical opening of the nozzle with a rectangular shape to create a laminar air flow.

Purpose of the Invention

It is an object of the present invention to provide a removable or non-removable nozzle for a hair dryer that can be easily changed from a first shape that delivers a hot air stream which is a circular cross section, wherein the air stream is produced in a substantially rectangular cross section, ie wide and flat.

The term "rectangular" is to be understood as including a shape having a corner or side, such as a slightly circular or equivalent ellipse. Similarly, the term "circular" may apply slightly to oval.

The defects of the prior art are brought about by the fact that the hair dryer is in use, which turns out that a standard circular stream and a wide and flat stream are needed alternately, so that the user must remove and replace the hot nozzle, which can be avoided by the present invention. have.

More specifically, it is an object of the present invention to manufacture a mechanism that is installed in a hair dryer or integrated with a hair dryer to easily make a variable nozzle, the nozzle being capable of delivering a flow of circular cross section in addition to a wide and flat air stream. .

The invention will be described in detail with reference to certain preferred embodiments shown in the accompanying drawings which follow.

The present invention is directed to a hair dryer nozzle of a shape that can be modified to deliver a cylindrical airstream, or a relatively wide and flat lamina, in the form of a circular cross section.

1 is a perspective view of a nozzle in a first position that creates a hot air flow in a circular cross section;

FIG. 2 is a corresponding perspective view of FIG. 1 with a nozzle discharging hot airflow in the form of a flat, laminar flow.

3 and 4 are perspective views similar to each of FIGS. 1 and 2, which more clearly show the movement of a flap with a hair-dryer nozzle installed;

The nozzle with the general reference number 1 is an integral part of the hair dryer or a separate part which can be installed in the current hair dryer.

The actual design of the hair dryer generally means that the hair dryer delivers airflow in a circular cross section.

The nozzle 1 consists of a cylindrical or frustoconical sleeve 3, one end of which may be an integral part of the hair dryer (not shown) or installed in the outlet orifice of the hair dryer.

In one position (FIGS. 1 and 3), the airflow exiting the outlet of the nozzle has a substantially circular cross section.

For certain applications, however, the user wants a relatively wide and flat laminar flow form.

To produce this effect, the sleeve 3 has two folding wings 5 which are rotatable about the geometry axis 7 and a geometry which is in principle perpendicular to the axis of rotation of the folding wing 5. The flap 9 which can move a rotating shaft with respect to the shaft 11 is provided.

In the state shown in FIGS. 1 and 3, the flaps 9 are parallel to the axis of the airflow corresponding to the shape of the sleeve 3, with the foldable vane 5 in it. As shown, the upper walls 5A of the two foldable wings slide under the upper flap and the lower walls 5B of the same foldable wings cover the lower flap.

In this configuration, the hot air stream maintains a circular cross section simply divided into three longitudinal slices in the sleeve 3.

The lateral shape of the foldable wings, of course, is adapted to be slightly rounded to match the general circular shape of the sleeve when folded.

In order to achieve their indicated rotational axis movement about the axes 7 and 11 of the foldable wings and flaps respectively, rotational axes or some equivalent means are provided.

In order to change the shape of the nozzle, the foldable vanes 5 can be rotated about the geometry axis 7 in a manner that flattens the discharge orifice, thus reaching the state shown in FIGS. 2 and 4.

At the same time, the flaps 9 are raised in such a way that they are located by being rotated about the geometry axis 11 on the inner side of the sleeve 3. Thus, the initial circular cross-sectional air stream impinges on the flaps 9 and is directed in the axial direction of the sleeve 3.

At the same time, the air flow also branches left and right along the sides of the open foldable wings 5 to create a general rectangular shape air flow as shown.

Any suitable means can be used to effect this change.

Springs (not shown) are used, for example, to act on the flaps 9 and the foldable wings 5 to keep the flaps and wings in the state shown in FIGS. 2 and 4. When a force is applied, for example with the aid of a ring (not shown) that is slightly larger than the diameter of the sleeve 3 and that slides to cover the folding vanes 5 gradually from the rear to the front, it is Against the force of the spring, the foldable wings are pushed in the state shown in FIGS. 1 and 3. At the same time, the flaps 9 can be returned in line with the axis of the sleeve 3.

Of course, other means can be used.

There is no difficulty in designing the shape of the flaps to perform the desired function of placing the flaps on the inner side of the sleeve and deflecting substantially all air.

The foldable wings can also be easily folded without substantially interfering with the movement of the flaps 9.

Some fillets may be provided on the foldable wings (ends of the upper or lower surface) or, if desired, on the flap.

Substantially, when switching from the state of FIG. 1 to the state of FIG. 3, this variant is very easily brought about without excessive friction and without significant loss of cross-sectional openings for passage of airflow. The foldable side vanes, if dimensioned, maintain a significant cross section with respect to airflow when flattened, in this case approximately two thirds of the circular cross section.

Claims (8)

A removable or non-removable nozzle for a hair dryer that is easily changed from a first shape that conveys a hot air stream of approximately circular cross section, thereby producing a substantially rectangular cross section, ie wide and flat. 2. The flap 9 according to claim 1, wherein the two foldable vanes 5 are rotatable about the geometry axis 7 and the flap 9 is rotatable about the geometry axis 11 perpendicular to the axis of rotation of the foldable wings 5. Nozzle, characterized in that consisting of a sleeve (3) is installed. 3. The flap (9) according to claim 2, wherein the flaps (9) are parallel to the axis of the sleeve (3) and the foldable vanes (5) are in it, and the upper walls (5A) of the two foldable vanes. ) Slide under the upper flap and the lower walls (5B) of the foldable wings cover the lower flap. 4. Apparatus according to claim 3, in the approximate rectangular shape of the airflow, the foldable vanes (5) are rotated about the geometry axis (7) in such a way as to flatten the discharge orifice and the flaps (9) of the sleeve (3) Nozzle, characterized in that it is raised in such a way that it is located by being rotated about a geometry axis (11) on the inner side. 6. The nozzle according to claim 1, wherein the spring keeps the flap and the collapsible vane in a position corresponding to an airflow of approximately rectangular cross section. 7. 6. The ring of claim 5 wherein a ring of diameter slightly larger than the diameter of the sleeve is pushed behind the foldable wing against the force of the spring, and progressively forward from the rear to return the flap in line with the axis of the sleeve. And a nozzle provided to slide in such a manner as to cover the foldable wing. The method of claim 1, wherein the nozzle is integral to the hair dryer. 7. A method according to any one of claims 1 to 6, wherein the nozzle is detachably installed at the outlet orifice of the hair dryer.