WO2006024514A1

WO2006024514A1 - Supporting device for battery chargers of electric portable device

Info

Publication number: WO2006024514A1
Application number: PCT/EP2005/009372
Authority: WO
Inventors: Valter Fabri
Original assignee: B & V Srl
Priority date: 2004-08-30
Filing date: 2005-08-26
Publication date: 2006-03-09
Also published as: ITBG20040008U1

Abstract

The present invention relates to a supporting device (1) for battery chargers (8) of electric portable devices such as, for example, cordless telephone, digital camera as well as similar devices. The supporting device (1) comprises at least a first module (5) for containing a plurality of battery chargers (8) and at least an electric socket (11) suitable to be electrically connected to the plug (6) of the chargers (8). The electric socket (11) is electrically connected to a power source such as, for example, the domestic feeder line or a battery housed inside the containment module (5). The supporting device (1) according to the invention is provided of a plurality of mechanical winding means (20) for winding/unwinding said electric cables (7) of the battery chargers.

Description

SUPPORTING DEVICE FOR BATTERY CHARGERS OF ELECTRIC PORTABLE

DEVICE DESCRIPTION

The present invention relates to a supporting device for battery chargers of electric portable devices such as, for example, cordless telephone, digital camera as well as similar devices. As known, most of traditional electric portable devices need a periodical recharge of their battery. The recharge is usually performed by means of specific battery chargers. These chargers (shown schematically in figure 1) usually comprise an electric plug (6) connected to a transformer (9) and electric cables (7) having a free end suitable to be electrically connected to a corresponding electric portable device for performing the recharge. The electric plug (6) of the battery charger (8) is usually inserted in a socket, e.g. a traditional wall socket, electrically connected to a power source, e.g. a domestic feeder line. As know, often the user needs to recharge more portable devices at the same time and traditionally all the battery chargers are connected to an electric flap trap or to a multi lines adapter inserted in a single socket. This solution is inevitable especially when the number of available sockets is restricted, but brings about tangles between the electric cables of the battery chargers.

Hence, it is evident the need to have technical solutions which allow to overcome this drawback. For this reason the main aim of the present invention is to provide a supporting device for battery chargers of electric portable device that will enable to overcome the previously cited drawback.

Within this aim, an object of the present invention is to provide a supporting device for battery chargers of electric portable device which allows to avoid the generation of tangles between the electric cables of more battery chargers fastened nearby each other. Another object of the present invention is to provide a supporting device for battery chargers that is constituted by a reduced number of components which may be readily coupled together and produced using low-cost industrial processes.

Not the last important purpose of what forms the subject of the present invention is to provide a supporting device for battery chargers that will be highly reliable and relatively easy to produce at competitive costs.

The above main aim and objects, as well as other which will become more apparent hereinafter are achieved by a supporting device for battery chargers of electric portable devices characterized in that it comprises: al least a first containment module for a plurality of battery chargers and comprising at least one opening for allowing the passage of electric cables of the battery chargers; at least one electric socket housed inside said first containment module and suitable to be electrically connected to the plug of the battery chargers, the electric socket being electrically connected to a power source; a plurality of mechanical winding means housed inside the first containment module for winding/unwinding the electric cables of the battery chargers.

The support device according to the invention advantageously comprises a plurality of mechanical winding means for winding/unwinding the electric cables of the battery chargers avoiding in this manner the generation of tangles between the same cables. Further characteristics and advantages will emerge more clearly from the description of preferred but non-exclusive embodiments of a supporting device according to the invention, illustrated by way of indicative and non-limiting example, with the aid of the attached drawing, in which: figure 1 is a prospective view of two different known battery chargers; figure 2, 3, 4 and 5 are prospective views related to embodiments of a containment module of a supporting device according to the present invention; figure 6 is a prospective view of an embodiment of a flap trap of a supporting device according to the present invention; figure 7 is a section view according to the section plane A of figure 6; figure 8 is an explosion view of a the flap trap of figure 6; figure 9 and 10 are respectively a prospective view and a plan view of a first embodiment of a supporting device according to the present invention; figure 11 is a section view according to the line II of figure 10; figure 12 is a section view according to line II-II of figure 10; figure 13 is a section view according to line III-III of figure 10; figure 14 is a prospective view of some components of the supporting device according to the present invention; figure 15 and 16 are respectively a prospective view and a plan view of a second embodiment of a supporting device according to the present invention; figure 17 is a lateral view according to the line VII-VII of figure 16; figure 18 is an enlarged view of the figure 15; - Figure 19 and 20 are respectively a prospective view and a explosion view of a third embodiment of a supporting device according to the present invention; figure 21 is a section view according to the plane B of figure 20.

With reference to the figures, the supporting device 1 according to the invention is characterized in that it comprises a first containment module 5 for a plurality of battery chargers 8 of electric portable device such as, for example, cordless telephone, digital camera or similar devices. The first containment module 5 comprises at least one opening 2 for allowing the passage of electric cables 7 of the battery chargers 8; preferably a plurality of openings 2 are present.

At least one electric socket 11 is housed inside the first containment module 5 to be electrically connected to the plug 6 of the battery chargers 8. Under operating conditions, the electric socket 11 is electrically connected to a power source such as, for example, the domestic feeder line or a battery housed inside the first containment module 5. The supporting device 1 according to the invention further comprise a plurality of mechanical winding means 20 housed inside the first containment module 5 for winding/unwinding the electric cables 7 of the battery chargers 8 so as to avoid the generation of tangles between them as explained in more details hereinafter.

Figure 2 and 3 shown a possible embodiment of a the first supporting module 5 of a supporting device according to the invention. As illustrated, the module 5 comprises a lower box 16 and a cover 17 which are removable coupled each other for example by a sliding engagement. In this manner the cover 17 can be removed to insert/remove the battery chargers 8 inside/from the containment module 5. In alternative solutions (not shown) the cover 17 could be hinged on the lower box 16 or simply abutted on the same without a sliding engagement.

According to a preferred embodiment of the invention, the first containment module 5 can be advantageously coupled to a second containment element 100 as illustrated in figures 4 and 5. For this purpose the device 1 also comprises mechanical connecting means such as, for example, a plurality of mechanical clips 102 suitable to connect a side wall 5a of the first module 5 to a corresponding side wall 103 of the second containment module 100. As illustrated, such walls 5a and 103 can correspond to the frontal walls of the two containment modules 5 and 100 or in alternative to the lateral walls of the same. Likewise the mechanical clips illustrated can be replaced by other equivalent means. Hence the first 5 and second containment module 100 have a modular structure which allows to connect more containment modules improving the functionality of the supporting device 1.

With reference in particular to figure 4, the first 5 and the second containment module 100 also comprise a side 105 for accommodating electric connecting means to mutually connect the electric sockets 11 housed in the connecting modules. In this manner both the containment modules 5 and 100, and if necessary other modules, can be connected to the same power source by means of only one electrical connection.

With reference now to figures 6,7 and 8, and according to a preferred embodiment, the supporting device 1 comprises a plurality of electric sockets 11 housed inside the first containment element 5. In particular said sockets 11 rotate around an axis parallel to the axis of the plug 6 for allowing a easy installation of the battery chargers 8 inside the first containment module 5. In fact once each of the battery chargers 8 is inserted in a corresponding rotating socket 11, it can rotate around the axis of its plug 6 so as to achieve the best operative configuration in function of its shape and structure.

With reference in particular to figure 6, the electric rotating sockets 11 are fitted on an electric flap trap 10 which is electrically connected to a power source (not shown). Figure 6 allows to observe that the sockets 11 can be differently turned to be electrically connected to a plug 6 of one of the battery chargers, 8 according to the best operative configuration. Figures 7 and 8 are respectively a section view and an explosion view of the flap trap of figure 6 and allow to observe the internal structure of the same. The flap trap 10 comprises a casing 33 coupled to a support plate 34 on which the rotating electric sockets 11 are fitted. In particular the support plate 34 comprises a plurality of cylindrical cavities 44 (see figure 8) in each of which one of the sockets 11 is housed.

Said rotating sockets 11 comprise a main body 12 having a cylindrical shape with an first annular protrusion 13 which rests on a second annular protrusion 14 of a corresponding cylindrical cavities 44. The main body 12 comprises at least two blind hole 130, preferably three, in which the terminal 6a of the plug 6 of one of the battery chargers are inserted. At least a part 130A of the internal surface of the hole 130 comprises conductor terminal electrically connected to the power source as hereinafter described.

According to a preferred embodiment, the flap trap 10 comprises a plurality of elastic countered rings 45 which are fitted between the main body 12 of one of the rotating sockets 11 and the corresponding cylindrical cavity 44. The aim of these elastic rings is to produce friction between the external surface of the main body 12 and the internal surface of said cavity 44 in such a way that the rotating socket 11 is stopped in its operative position. To this purpose the elastic rings 45 can advantageously comprise a plurality of projections and recesses disposed along their circumference respectively for sticking to the main body 12 and the corresponding cavity 44. Figures 8 allows to observe a preferred embodiment of said elastic rings 45 which comprise one or more engage elements suitable to engage corresponding elements of said main body 12 and said cavities 44. As illustrated the engage elements are constituted, for example, by a plurality of alternate projection and recesses. In particular the projections 47 are suitable to engage a recess of a corresponding cavity 44 and the recesses 47A are suitable to be coupled to a corresponding slot 48A of said main body 12. This particular shape of the rings 45 allows a rotation of the electric socket 11 with respect to the corresponding cavity 44 according to predefined rotation. If said alternate projections 47 and recesses 47 A, for example, are disposed along the circumference of the ring 45 every ninety degree, then the main body 12 and consequently the socket 11 can be rotated according to a rotation angle of ninety degree. With reference in particular to figure 7, the electric flap trap 10 comprise a plurality of fixed wiping contact 80 each of which housed inside the casing 33 so as to couple corresponding movable contacts 79 connected to one of said sockets 11. In particular the fixed wiping contacts 80 comprise three flat conductor disks 8OA stacked on each other and mutually separated by insulating material for keeping separated the electric phases. The disks 80A are electrically connected to the power source by threads 201 or other equivalent means. The movable wiping contacts 19 comprise three conductor pins 79A fastened at the lower end of the main body 12 of the rotating sockets 11. The pins 79 A have different height so that each of them can be coupled to one of said disks 80A to give continuity to each electric phase. Moreover each pin 79 A is electrically connected to one of said conductor terminal 130A inserted in one of the blind holes 130 of the main body 12. As illustrated in figure 7, this connection can be performed, for example, by means of electric connections inserted in channels of the main body 12 so as to connect each pin 79 A to a corresponding terminal conductor 130A.

According to a preferred embodiment, the socket 11 is advantageously provided of elastic pressure means (not shown) which are operatively connected to the movable wiping contacts 79 and/or to the fixed wiping contacts 80 to generate a constant pressure contact between the same. These pressure means can be formed, for example, by a compression spring inserted in a side on the main body 12 so as to act directly on the pins 79A to push them against the disks 80A.

The flap trap 10 further can comprise a switch (not shown) which allows to cut off the voltage from the electric sockets 11 when the battery chargers 8, inserted in the sockets 11, are not electrically connected to the corresponding electric portable device. This switch can be activated by an user, for example, pushing an external button 111 (see for example figure 2 or 3) fastened on a surface of the lower box 16 of the containment element 5 of the supporting device 1.

Figure 8 is an explosion view of the flap trap 10 above indicated and allows to observe the sequence of assembling of the components. As illustrated, the fixed wiping contacts 80 are fastened inside the casing 33 and each socket 11 is inserted in a corresponding cavity 44 of the support plate 34 by the interposition of one of the elastic countered ring 45. Then the support plate 34 is coupled to the casing 33 to complete the structure of the flap trap 10. Apart from the electric parts, the components can be advantageously and easily performed in plastic material using traditional low cost processes.

Figures from 9 to 14 are related to a first embodiment of the supporting device 1 according to the invention. In particular in this embodiment, two battery chargers 8 are housed inside the containment module 5 and electrically connected to a flap trap 10 having two electric rotating sockets 11. It is also possible to use a flap trap 10 having more than two electric sockets 11 and therefore a larger number of battery chargers 8. It is also possible to use a single electric socket 11, but more battery chargers 8 which will be connected to the single socket 11 by means of an electric adapter. Moreover in the last cited figures, the flap trap 10 is housed in such a way the main axis S of the socket 11 is substantially parallel to the bottom surface 5 A of the lower box 16, but it could be differently orientated, for example, in such a way that said main axis S is vertical.

The support device 1 comprises a plurality of supporting members 140 for the electric cables 7 of the battery chargers 8. As illustrated, these supporting members 140 can be formed, for example, by vertical walls with a slot 140A in which one of said electric cables 7 is inserted to be directed towards one of the mechanical winding means 20 housed on the lower box 16 of the containment module 5. With reference to figure 10, the members 140 are preferably fastened so as to be aligned with one of the electric socket 11 and one of the mechanical winding means 20. This layout of the components allow to maintain the electric cables along two separated direction avoiding any mutual contact between the same. Figures 11 and 13 are a first and a second cross section respectively along the line I-I and III- III of the figures 10 and allow to observe the internal structure of the winding mechanical means 20. hi particular each of them comprises a winding roller 25 rotatably mounted on a pin 35 extending from said lower box 16 by means of a hinge coupling so as to allow a free rotation of the roller 25. A first spring 50 is operatively coupled to said winding roller 25 for allowing an automatic unwinding of the cable 7 as hereinafter indicated. The winding roller 25 advantageously has a hourglass shape which encourage the winding of the cable 7 and comprise an axial groove 37 (see figures 10 and 14) which extends from its top to about middle of its height. The roller 25, near its bottom, also presents a cylindrical extension which comprises a first gear wheel 26. The function of the axial groove 37 and the first gear wheel 26 will be described in detail in what follows.

From figure 11, it is evident that the lower box 16, under its bottom surface 5B, preferably comprises an empty volume 108 which can be advantageously used to accommodate wires 107 coming from the flap trap 10 and directed to the push button 102 according to what above described.

With reference in particular to figure 14, the first spring 50, preferably a coil spring, is housed in a circular recess 38 of the bottom of the roller 25 and comprises a first end 51 firmly connected to said pin 35 and a second end 52 connected to the surface of the recess 38. In this manner, following a rotation imposed on the roller 25, the spring 50 is compressed so as to store energy which will be released to generate an opposite rotation of the roller 25. According to this first embodiment of the present invention, the support device 1 comprises a plurality of mechanical tension means 30 operatively connected to one of the mechanical winding means 20 so as to tighten a corresponding electric cable 7 of one of the battery chargers 8.

Figure 12 is a cross section according the line II-II of the figure 10 and allows to observe a possible configuration of these mechanical tension means 30 which comprise mainly a couple of take-up rollers 31 and 32. In particular a first take up roller 31 has a fixed rotational axis X and a second take up roller 32 has a movable rotational axis Y with respect to the fixed rotational axis X. In this manner a cable 7 can be interposed between the take up roller as better indicated hereinafter.

The first take up roller 31 is supported by the bottom surface 5B of the lower box 16 by means of an hinge coupling and it is operatively connected to a second gear wheel 36 which engages said first gear wheel 26 of the winding roller 25. In particular, as illustrated in figure 13, the second gear wheel 36 is mounted on a side 90 of the bottom surface 5B and the first take-up roller 31 is mounted so as to be coaxial to the second gear wheel 36. This latter is therefore capable to turn around the fixed rotational axis X to engage the first gear wheel 26 of the roller 25.

The first take up roller 31 and the second gear wheel 36 are operatively connected by means of a ratchet coupling which allows to transmit the rotational movement of the second gear wheel 36 to the first take up roller 31 only when the second gear wheel 36 turns according to a predefined direction of rotation. On the contrary, when the second gear wheel 26 turns according to the opposite direction then the first take up roller 31 can be turn neutral around its fixed rotational axis X.

Figure 14 is a prospective view of the winding roller and the first take up roller 31 and allows to observe a possible configuration of said ratchet coupling, hi particular it comprises a couple of countered radial picks 59 which are suitable to engage the teeth of an internal crown 28 of the second gear wheel 36 when this latter turns according to the direction shown by the arrow P. On the contrary, when the second wheel 36 turns according to the arrow T then the first take up roller 31 can turn neutral around its fixed axis X.

As above indicated, the figure 12 also shows a possible configuration of the second take up roller 32 which is mounted on a movable arm 61 connected to the lower box 16 by means of elastic means 42. hi particular the movable arm 62 is connected by a spring 65 to a bracket 66 of the bottom surface 5B of the lower box 16 and it is driven by two lateral guides 67 shown in figure 11. In this manner, a cable 7 of one of the battery chargers 8 can be interposed between the two take up rollers 31 and 32 moving the movable arm 61 which after returns towards the first take up rollers by the effect of the spring 65. In practice this latter forces the take up rollers 31 and 32 one against the other so as to avoid the fall of the cable 7 interposed between the same. The presence of the two lateral guides 67 allows a better movement of the movable arm 61, but it could be obviously replaced with equivalent means. With reference again to figure 9, the insertion of a battery charger 8 inside the support device 1 is particularly simple since it does not require particular manual ability. The user first insert a battery charger 8 in one of the sockets 11 of the flap trap 10 which will be conveniently orientated. Subsequently the user turns the winding roller 25 so as to compress the spring 50 (arrow P) for inserting subsequently the cable 7 of the charger 8 inside the vertical groove 37 of the winding roller 25. In particular the cable 7 is inserted in the vertical groove 37 approximately in correspondence of its middle point so stat about half of the cable 7 (back half) is comprised between the winding roller and the battery charger 8. After this insertion, the user releases the winding roller 25 allowing the spring 50 to turn the same roller in a opposite direction (arrow T). Owing to this action of the spring 50, the cable 7 is automatically wound around the winding roller 25 without any other actions. At the end of the winding, the user places the cable between the take up rollers 31 and 32 of the tension means 30 and inside the slot 140A of the supporting element 140.

The operatively of this first embodiment of the supporting device 1 is described hereinafter. When the user pulls the end of the cable 7 to connect it to the corresponding portable device, then the roller 25 turns around its axis unwinding the cable 7. In particular this latter is frontally tightened by the action of the user and in the back by the action of the tension means 30. hi fact, the rotation of the roller 25 causes the rotation of the second gear wheel 36 and, by the ratchet coupling, the rotation of the first take up roller 31. This latter, rotating, allows the unwinding of the back half of the cable 7 maintaining tightened the same between the winding roller 25 and the tension means 30.

When the user releases the cable 7, then the spring 50 turns the winding roller 25 around its axis for winding the cable 7 around the same. Consequently the second gear wheel 26 changes its direction of rotation releasing the ratchet coupling so that the first take up roller 31 turns freely around its fixed axis X. hi this manner the back half of the cable 7 can be again wound around the winding roller 25.

Figures from 15 to 18 relates to a second embodiment of the present invention, hi this solution the mechanical winding means 20 comprise a first 71 and a second couple of pulley 72 mounted respectively on a first 73 and a second pivot 74 both inserted in a driving rectilinear groove 75 on said lower box 16. Each pulley 71A,71B,72A, 72B can turn around the axis of the respective pivot on which it is mounted to encourage the movement of the cable as hereinafter described.

As shown in the figure 18, for example, elastic means are interposed between the first 71 and the second pivot 72. Preferably said elastic means comprise an helicoidal spring 77 housed inside the rectilinear groove 75 so as to connect mutually the two pivots 71 and 72. hi particular at least one of this latter can move along the groove 75 to compress the helicoidal spring 77 and to allow its expansion for winding/unwinding the cable 7 of a one of the battery chargers 8 as hereinafter described.

Figure 16 is a plant view of the support device 1 according to this second embodiment. Also in this solution a plurality of supporting members 140 is housed inside the lower box 16 so as to direct a cable 7 of one battery chargers 8 towards the winding means 20. Li particular the cable 7 is wound around each pulley 71 A,71B,72A, 72B of said couple of pulley whereby it is kept under tension and the elastic means are compressed by said first 71 and second pivot 72. Figure 17 is a cross section according to line VII-VII of figure 16 and shows the layout of the cable 7 around the pulleys 71A,71B,72A, 72B. As evident and according to a preferred solution, the height of the first pivot 71 is less than that of the second pivot 71 and consequently the top pulley 71 A on the first pivot 71 is lower than the top pulley 72 A on the second pivot 72 and the bottom pulley 7 IB on the first pivot 71 is lower than the bottom pulley 72B on the second pivot 72. This layout of the pulleys allows a better winding/unwinding of the cable around the same.

From the figures, it is evident that also in this second embodiment the arrangement of the support device 1 is fast and easy. After the insertion of the battery charger 8 in one of the electric socket 11 of the flap trap 10, the corresponding cable 7 is placed on the slot 140A of one of the supporting member 140 and consequently directed towards the top pulley 72 A on the second pivot 72 so as to wind the same, for example, according to the arrow W in figure 17. Subsequently the cable 7 is wound around the top pulley 71A on the first pivot 71 (arrow V) and then around the bottom pulley 72B on the second pivot 72. At last the cable 7 is wound around the bottom pulley 71B (again according the arrow V) on the first pivot 71 to go out by one of the openings 6 of the containment element 5.

The operatively of this second embodiment of the supporting device 1 is described hereinafter. When the user pulls the cable 7 to connect it to the corresponding portable device then the first pivot 71 moves towards the second pivot 72 compressing the spring 77 interposed between them. Therefore the cable 7 is tightened by the action of the user and its movement is encouraged by the rotation of the pulleys. Subsequently, when the user releases the cables, the spring 77 restores the initial condition and moves the first pivot 71 away from the second pivot 72. In this manner the distance between the first 71A,71B and the second couple of pulley 72A,72B increases and the cable 7 is automatically brought back inside the containment module 5.

For increasing the functionality of the support device 1, each pivot 71 and 72 could mount more than two pulleys especially when the length of the cable 7 is relevant. Moreover also the length of the groove 75, and consequently the distance between the pivots 71 and 72, could be increased with obvious advantages for the user.

Figures from 19 to 22 are relative to a third embodiment of the present invention in which the mechanical winding means 20 comprise a main winding roller 81 for winding/unwinding the electric cable 7 of one of said battery chargers 8. A first end 91 of the main winding roller 81 comprises an lower electric plug 83 suitable to be inserted in one of above indicated electric rotating sockets 11 while a second end 92 comprises an upper electric socket 99 suitable to accommodate the electric plug 6 of one of said battery chargers 8. According to this third embodiment, the mechanical winding means 20 also comprise a coil spring 88 preferably housed between the main winding roller 81 and the corresponding electric rotating socket 11 on which it is inserted. With reference in particular to figures 20 and 21, the coil spring 88 is housed in a lower annular recess of said main roller 81 and it is provided whit a terminal part 88A firmly fixed to the roller 81 and another terminal part 88B firmly fixed to the support plate 34 of the flap trap 10 by means, for example, of a pin.

The terminal of the lower plug 83 of the main roller 81 are made of conducting material and likewise also the blind hollow 150 of the upper socket 99 comprises at least a conducting terminal part 150A. With reference to the cross view of figure 21, each electric phase of the lower plug 83 is electrically connected to a corresponding phase of the upper socket 99 by means, for example, of electric connection wires disposed in relative channels 86 inside the main roller 81.

According to this third embodiment of the invention, a battery charger 8 is inserted by the user in the upper socket 99 of the main winding roller 81 and the corresponding cable 7 is wound around the same roller 81. When the user pulls the cable 7 to connect it to a portable device, the roller 81 turns around its axis according to the arrow N of figure 21. Owing to their mutual connection also the rotating socket 11 and the battery charger 8 turn together the main roller 81. During this rotation, the coil spring 88 is compressed for storing the necessary energy which will be subsequently used for winding the cable 7 when the user releases the same. According to a preferred solution, during the winding, the cable 7 could be tighten, for example, by a couple of rollers (not shown) fastened the openings 2 of the containment module 5. Once interposed between these rollers, the cable 7 is maintained tighten between the opening and the main roller 81 for a better winding of the same around said roller 81. The support device according to the invention avoids the generation of tangles between the electric cables of more battery chargers by means of a plurality of mechanical means for winding/unwinding automatically each of said cables. The support device according to the invention is highly reliable and relatively easy to produce at competitive costs. In practice, the materials used, as well as the contingent dimensions and shapes, may be any whatsoever according to the requirements and the state of the art.

Claims

1. Supporting device (1) for battery chargers (8) of electric portable device characterized in that it comprises:

- al least a first containment module (5) for a plurality of battery chargers (8) and comprising at least one opening (2) for allowing the passage of electric cables (7) of said battery chargers (8); at least an electric socket (11) housed inside said first containment module (5) and suitable to be electrically connected to the plug (6) of said chargers (8), said electric socket (11) being electrically connected to a power source; a plurality of mechanical winding means (20) housed inside said first containment module (5) for winding/unwinding said electric cables (7) of said battery chargers (8).

2. Supporting device (1) according to claim 1, characterized in that it comprises a plurality of electric sockets (11) rotating around an axis parallel to the axis of said plug (6), said rotating electric sockets (11) being fitted on a electric flap trap (10) electrically connected to a power source, said rotating electric sockets (11) being suitable to be electrically connected to a plug of said of battery chargers (8).

3. Supporting device (1) according to claim 2, characterized in that said electric flat trap (10) comprises a casing (33) coupled to a support plate (34) on which said rotating electric sockets (11) are fitted, said support plate (34) comprising a plurality of cylindrical cavities (44) each for housing one of said sockets (11).

4. Supporting device (1) according to claim 3, characterized in that said rotating electric sockets (11) comprise a main body (12) having a first annular protrusion (13) resting on a second annular protrusion (14) of said cylindrical cavity (44) of said support plate (34).

5. Supporting device (1) according to claim 4, characterized in that said flap trap (10) comprises a plurality of elastic countered rings (45) each of which fitted between the main body (12) of one of said adjustable electric socket (11) and the corresponding cylindrical cavity (44) of said support plate (34).

6. Supporting device (1) according to claim 5, characterized in that said elastic countered rings (45) comprise a plurality of alternate projections and recesses.

7. Supporting device (1) according to claim 5, characterized in that said elastic countered rings (45) comprise one or more engage elements (47) suitable to engage corresponding elements of said main body (12) and said cavities (44).

8. Supporting device (1) according to claim 7, characterized in that at least one of said engage elements (47) of said countered ring (45) is a projection suitable to engage a recess of said cavity (44).

9. Supporting device (1) according to claim 7, characterized in that at least one of said engage elements (47) is a recess suitable to be coupled to a corresponding slot (48A) of said main body (12).

10. Supporting device (1) according to claim 7, characterized in that said engage elements (47) comprise alternate projections and recesses.

11. Supporting device (1) according to one or more of the claims from 3 to 10, characterized in that said electric flap trap (10) comprises a plurality of fixed wiping contacts (80) housed inside said casing (33) so as to couple corresponding movable wiping contacts (81) connected to one of said sockets (11), said movable wiping contacts (81) being electrically connected to corresponding fixed wiping contacts (80) to give continuity to an electric phase.

12. Support device (1) according to one or more of the claims from 2 to 11, characterized in that said electric flap trap (10) comprises a switch to cut off the voltage from said plurality of electric sockets (10) if said chargers (8) are not electrically connected to their respective electric portable device.

13. Supporting device (1) according to one or more of claims from 1 to 12, characterised in that said first containment module (5) comprises a plurality of openings (2) each for the passage of the electric cables (7) of one of said battery chargers (8).

14. Supporting device (1) according to claim 13, characterized in that said first containment module (5) comprises a lower box (16) and a cover (17) which are removable coupled.

15. Supporting device (1) according to claim 14, characterized in that said cover (17) is coupled to said lower box (16) by a sliding engagement.

16. Supporting device (1) according to one or more of the claims from 13 to 15, characterized in that it comprise means for connecting said first containment module (5) to a second containment module (100).

17. Supporting device (1) according to claim 16 characterized in that said connecting means comprise a plurality of mechanical clips (102) suitable to connect a side wall (5A) of said first containment module (5) to a corresponding side wall (103) of said second containment module (100).

18. Supporting device (1) according to one or more of the claims from 1 to 17, characterized in that said mechanical winding means (20) comprise a winding roller (25) rotatably mounted on a pin extending from said lower box (16) by means of an hinge coupling so as to allow a free rotation of said winding roller (25), said mechanical winding means (20) further comprising a first spring operatively coupled to said winding roller (25).

19. Supporting device (1) according to claim 18, characterized in that it comprises a plurality of mechanical tension means (30) operatively connected to a corresponding mechanical winding means (20) so as to tighten a corresponding electric cable (7) of one of said battery charger (8).

20. Supporting device (1) according to claim 18 or 19, characterized in that said winding roller (25) has a hourglass shape with a cylindrical lower extension (24) comprising a first gear wheel (26).

21. Supporting device (1) according to claim 19 or 20, characterized in that said mechanical tension means (30) comprise a couple of take up rollers (31,32) between which one of said electric cable (7) of said charger is interposed, a first take up roller (31) having a first fixed rotational axis (X) and a second take up roller (32) having a movable rotational axis (Y) with respect to said first rotational axis (X).

22. Supporting device (1) according to claim 21, characterized in that said first take up roller (31) is supported by the bottom surface (5B) of said lower box (16) by means of a hinge coupling and operatively connected to a second gear wheel (36) by means of a ratchet coupling.

23. Supporting device (1) according to claim 22, characterized in that said second gear wheel (36) is capable to turn around said first fixed rotational axis (X) to engage said first gear wheel (26) of said mechanical winding means (20), said ratchet coupling transmitting the rotational movement of said second gear wheel (36) to said take up roller (31) when said second gear wheel (36) turns according to a predefined direction of rotation.

24. Supporting device (1) according to claim 23, characterized in that said ratchet coupling comprises a couple of countered radial picks (59) suitable to engage an internal crown (28) of said second gear wheel (36) when this latter turns according said predefined direction of rotation.

25. Supporting device (1) according to claim 24, characterized in that said second take up roller (32) is mounted on a movable support arm (61) which is connected to said lower box by means of a elastic means (42).

26. Supporting device (1) according to one or more of the claims from 1 to 25, characterized in that it comprises a plurality of supporting members for the electric cables (7) of said battery chargers (8), said supporting members (140) comprising a slot (140A) in which the cable of one of said battery chargers (8) is inserted to be direct towards said mechanical winding means (20).

27. Supporting device (1) according to one or more of claims from 1 to 17, characterized in that said mechanical winding means (20) comprise a first (71) and a second couple of pulley (72) mounted respectively on a first (73) and a second pivot (74) both inserted in a driving rectilinear groove (75) on said lower box (5), elastic means being interposed between said first (73) and second pivot (74), said cable of one of said battery charger being wound around each pulley of said couple of pulley whereby said cable is kept under tension and said elastic means is compressed by said first and second pivot.

28. Supporting device (1) according to claim 27, characterized in that said first (73) and second pivot (74) are mutually connected by means of said elastic means.

29. Supporting device (1) according to claim 28, characterized in that said elastic means comprise an helicoidal spring (79) housed inside said rectilinear groove (75).

30. Supporting device (1) according to one or more of the claims from 1 to 17, characterized in that said mechanical winding means (20) comprises a main winding roller (81) for winding/unwinding the electric cable of one of said charger (8), a first end (91) of said main winding roller (81) comprising a lower electric plug (83) suitable to be inserted in said rotating electric socket (11), a second end (92) of said main winding roller (81) comprising an upper electric socket (99) suitable to accommodate the electric plug of one of said chargers (8), each electric phase of said lower electric plug (83) being electrically connected to a corresponding phase of said upper electric socket (99), said mechanical winding means further comprising a coil spring whereby said cable is wound under tension around said main winding roller.

31. Supporting device (1) according to claim 30, characterized in that each electric phase of said lower electric plug (83) is electrically connected to a corresponding phase of said upper electric socket (99) by means of electric connection yarns disposed inside said winding roller.

32. Supporting device (1) according to claim 31, characterized in that said a coil spring (130) is housed between said main winding roller (81) and electric rotating socket (11), said coil spring (130) comprising a first end (82) rigidly connected to said winding roller (81) and a second end (83) rigidly connected to said adjustable socket (11).

33. Supporting device (1) according to claims 32, characterized in that said coil spring(130) is housed in a lower annular groove (88) of said main winding roller (81).