FR2751368A1 - TWO-LEAF SWING DOOR CLOSING MECHANISM FOR TELEPHONE BOOTH AND TELEPHONE BOOTH EQUIPPED WITH SUCH A MECHANISM - Google Patents

Abstract

Two-leaf swing door closing mechanism (2, 3) for a telephone booth (1) comprising damping means (8) of the movements of said leaves, one end (8b) of said damping means being coupled to an element ( 6) integral with one of said leaves and the other end (8a) being coupled to a lifting beam, said lifting beam being mounted to pivot about a pivot (10) fixed with respect to said cabin and connected to the latter by a additional damping means (12), characterized in that said damping means (8, 12), said lifter (9) and said pivot (10) are mounted on a rigid plate (14) so as to constitute an assembly unitary adapted to be mounted on said cabin (1) interchangeably.

Description

The invention relates to a hinged door closing mechanism with two

  leaves for a telephone booth and a

  telephone booth equipped with such a mechanism.

  The utility certificate FR-B3-2 568 929 discloses a safety mechanism for the operation of hinged doors with two leaves which comprises two compensating devices coupled by their ends to the leaves and the length of which can be modified as required. against elastic return means, these two devices also being coupled to the same lifting beam. Although effective, this device is relatively complex and includes a large number of components which must be mounted independently on the roof

of the cabin they are part of.

  However, the roof of a telephone booth is more and more often made of plastic material, by molding or by blowing, and the manufacturing tolerances obtained by these methods do not make it possible to precisely position the support points or the axes. of rotation of the constituent elements of these devices. In addition, a telephone booth or roofing made of plastic material may not have sufficient mechanical strength or rigidity to allow efficient operation of this device. Finally, when a maintenance operation must be carried out on an already installed telephone booth, it is necessary to disassemble some or all of the elements of the mechanism, to mount replacement elements and to adjust their dimensions. on site, in climatic or access conditions that can make

  the operator's long and / or arduous task.

  The invention aims to solve these problems and to propose a hinged door closing mechanism with two leaves for a telephone booth which can be easily set up on this booth, including when the latter is installed on its site of use. and when the manufacturing tolerances

  plastic parts of the cabin are important.

  In this spirit, the invention relates to a hinged door closing mechanism with two leaves for a telephone booth comprising means for damping the movements of said leaves, one end of said damping means being coupled to an element integral with said leaves and the other end being coupled to a spreader, said spreader being mounted pivoting about a fixed axis with respect to said cabin and connected to the latter by an additional damping means, characterized in that said damping means and said spreader are mounted on a rigid plate so as to constitute a unitary unit capable

  to be mounted on said cabin interchangeably.

  Thanks to the invention, the entire door closing mechanism can be mounted in one operation on the cabin and the manufacturing tolerances of the roof or the roof of the cabin do not affect the operation of the damping means, since these have positions defined by the plate and no longer by the roof or the roof of the cabin. In addition, when a malfunction appears on the closing mechanism of the invention, for example due to the wear of one or more damping means, it is possible to carry out the standard exchange of the 'whole device by removing the rigid plate, this operation can be performed quickly and does not require adjustment on site, these adjustments can be made at the place of manufacture of the mechanism in optimal conditions and with suitable instruments. Finally, the plate, which is rigid, gives the mechanism good mechanical resistance properties and allows it to absorb the forces transmitted by the leaves in the event of impact or displacement at high speed, due to an indelicate user and / or conditions

  climatic conditions, for example in the event of a storm.

  According to a first advantageous aspect of the invention, the

  damping means are constituted by gas springs.

  The use of gas springs makes it possible to combine two functions with these springs. The gas spring constitutes both a means for returning the cabin leaves to the closed position and a means for regulating the speed of movement of the leaves. In addition, in a system such as that known from FR-B3-2 568 929, the resistant force generated by the compensating device is proportional to the movement of the leaves while, thanks to the use of a gas spring, the Resistant force is proportional to the movement and the speed of movement of a moving part. Thus, a gas spring makes it possible to oppose a torque resistant to the movement of a leaf from the start of its opening or from the start of its closure, which makes it possible to avoid movements of great

  amplitude at high speed of the mobile elements of the device.

  In addition, a gas spring has the additional particular advantage of being insensitive to dry and greasy dust and therefore of having a longer service life than the damping means usually used in devices of the type of the invention. , which is particularly useful since a telephone booth is installed for

  several years, even several decades.

  As with the device known from FR-B3-2 568 929, the mechanism of the invention makes it possible to open one leaf while the other is blocked. In this case, the use of gas springs has the additional advantage that, when the open leaf alone is released, its movement is limited in speed, which avoids a violent return to the closed position, which

  would be possible with a mechanism without gas spring.

  In summary, the use of gas springs makes it possible to regulate the speed of movement of the leaves in all

  cabin usage configurations.

  According to another advantageous aspect of the invention, the plate comprises a lower veil and an upper veil, the axes of articulation of the damping means and / or of the spreader being defined by orifices provided in the lower and upper veils. Thus, the lower veil and the upper veil of the rigid plate effectively support the damping means and the spreader by means of bearings located both above and below these elements, so that they effectively oppose to any parasitic movement

  pivots of the damping means or the spreader.

  According to another advantageous aspect of the invention, the

  plate carries at least one end stop of the leaves.

  Thanks to this aspect of the invention, the forces transmitted to the stops directly by the leaves or by the connecting rods which are connected to them, are absorbed by the plate itself and are not directly transmitted to the roof or to the roof of the cabin, so that the roof or the roofing are not likely to be deformed by these forces which would be repeatedly transmitted to them. According to a first variant of the invention, the stop can be a stop for closing the leaves which is

  housed in the interior volume of the cabin.

  According to a second variant of the invention which is compatible with the first, the stop can be a stop placed between the lower veil and the upper veil of the plate and / or housed in a U-shaped metal support and fixed to the plate by a means of assembling the plate

on the roof of the cabin.

  The invention finally relates to a telephone booth comprising a closing mechanism as described above. The invention will be better understood and other advantages thereof will appear more clearly in the light of the

  description which follows of an embodiment of a

  hinged door closing mechanism with two leaves for a telephone box, given solely by way of example and made with reference to the accompanying drawings in which - Figure 1 is a perspective view of the upper part of a telephone box incorporating a mechanism according to the invention; - Figure 2 is a partial top view of the front part of the cabin of Figure 1; - Figure 3 is a view identical to Figure 2, the upper veil of the plate being removed; - Figure 4 is a vertical sectional view of the upper part of the cabin of Figure 1 along the plane IV-IV of Figure 2 and - Figure 5 is an exploded perspective view of the

  platinum belonging to the mechanism of the invention.

  The cabin 1 of FIG. 1 comprises two door leaves 2 and 3 respectively articulated around substantially vertical axes of rotation. The cabin also includes a roof 4, shown in phantom, disassembled with respect to the rest of the cabin, and a contretoit 5 forming the ceiling of the interior volume of the cabin. As it appears more clearly in FIG. 2, each of the leaves 2 and 3 is made integral with a link 6 mounted free in rotation around a pivot 7 materializing the axis of rotation of the leaves 2 and 3. At the end free of each link 6 is coupled a connecting gas spring 8 whose second end is coupled to a lifting beam 9 articulated around a vertical axis materialized by a pivot 10. Thus, the gas springs 8 constitute damping means movements of leaves 2 and 3, as their respective lengths may vary depending

  of the forces transmitted to them by the links 6.

  At one end of the spreader 9, a main gas spring 12 is coupled, the second end of which is fixed relative to

to cabin 1.

  The gas springs 8 and 12 are mounted inclined, so that their respective rods are located at a level lower than that of their respective fixed parts, so that the oil contained in the gas springs is constantly reduced by gravity towards their respective rods, which

  guarantees proper operation of the gas springs in question.

  To do this, the articulation ball joints 13a and 13b of the gas springs 8 on the spreader 9 are located above the median plane P of the spreader 9, so that their respective fixed parts 8a are located above this plane median. Their rods 8b are connected to the rods 6 at a level lower than that of the median plane P of the lifter 9, so that the rods 8b are generally located below the fixed parts 8a. Similarly, the articulation ball joint 13c of the main gas spring 12 on the spreader 9 is located below the median plane of this spreader, while its point of attachment to the plate 14 can be provided relatively high, such so

  that its fixed part 12a is located above its rod 12b.

  The operation of the device can be appreciated by comparing FIGS. 2 and 3. In FIG. 2, the leaves 2 and 3 are in the closed position while in FIG. 3 they are in the open position, the orientation of the lifter being modified by

  the passage from one of these positions to the other.

  According to the invention, the gas springs 8 and 12 and the lifter 9 are mounted on a rigid plate 14 so as to constitute a unitary assembly capable of being mounted on the cabin 1 interchangeably. This plate is, in

particular, visible on line 5.

  Thanks to the invention, the entire device can be easily assembled and disassembled with respect to the cabin and all of the device's adjustments can be made in the workshop before mounting the plate 14 on the cabin 1. The rigid nature of the plate 14 allows it to withstand the forces transmitted by pivots 7 and 10 and the means

amortization 8 and 12.

  The use of gas springs makes it possible to obtain effective damping from the first degrees of opening or closing of the leaves, this damping being proportional

  at the speed of movement of the leaves.

  As can be seen more clearly in FIGS. 4 and 5, the plate 14 comprises a lower veil 15 and an upper veil 16, these veils 15 and 16 being provided with horizontal edges provided with holes in which the fixing screws 17 can be inserted. pivots 7 and 10 are defined by orifices forming a bearing 15a, 15b, 16a and 16b, respectively formed in the veil 15 and in the veil 16, as appears in particular for the pivot 10 in FIG. 4. The pivot 10 is firmly held in position by the cooperation of the webs 15 and 16, which makes it possible to avoid any dimensional variation of the door closing mechanism according to the invention. The veil 15 comprises an anterior extension 15c directed towards the zone of approximation of the edges of the leaves 2 and 3 in the closed position. This extension 15c carries a finger 18 capable of receiving a roof fixing screw 4 on the plate 14. Rigidization ribs 15d are provided on the extension 15c to improve its mechanical strength. On the other hand, the cabin comprises a rigid post 19 forming a support for the cabin 1 and on which is mounted the telephone located in the interior volume of the cabin. The roof 4 is fixed to the post 19 and to the plate 14 by means of the finger 18, so that the manufacturing tolerances of the contretoit 5 do not influence

  negatively on the placement of the roof 4.

  Under the extension 15c is fixed an elastic stop 20 for limiting the closure of the leaves 2 and 3, this stop being housed in the interior volume of the cabin 1. Thus, the stop is supported by a rigid element, constituted by the plate 14 , which is not likely to be deformed following the numerous

  supports of leaves 2 and 3 at the end of their closing stroke.

  Furthermore, between the webs 15 and 16 are arranged two elastic stops 21, made of elastomer, of the end of travel of the links 6, that is to say of the leaves 2 and 3. In FIG. 3, the links 6 are in abutment against the stops 21. Each stop 21 is housed in a metal support 22 in the shape of a U whose opening is turned upwards, this metal support compressing the stop 21 to prevent it from being deformed exaggeratedly when one rods 6 is supported on the stop. The veil 15 of the plate 14 is fixed to the contretoit 5 by means of screws 23 passing through the stop 21, the U-shaped support 22, the veil 15 and the controitoit 5, so that a single set of screws 23 must be used to fix the stop 21 on the plate 14 and to assemble the plate 14 and the controitoit 5. On the other hand, a connecting tab 24 is connected by one of its ends to the wall 16 by means of fixing screws 25 then that its second end is mounted on a console 19a of the post 19 by means of fixing screws 26. Thus, the tab 24 connects the plate 14 to the post 19. The rigid assembly of the plate 14 relative to the post 19 makes it possible to guarantee an adequate positioning of the elements constituting the mechanism of the invention, whatever the possible deformations of the

controitoit 5.

  The upper veil 16 also comprises two orifices 16c and 16d allowing access respectively to the ends of the main spring 12 on the side of its fixed part 12a and of its rod 12b, so as to mount or dismount it,

  this operation is usually carried out in the workshop.

Claims (10)

  1. Closing mechanism for a swing door with two leaves (2,3) for a telephone booth (1), comprising means for damping (8) the movements of said leaves, one end (8b) of said damping means being coupled to an element (6) integral with one of said leaves and the other end (8a) being coupled to a lifting beam, said lifting beam being pivotally mounted around a pivot (10) fixed relative to said cabin and connected to it ci by an additional damping means (12), characterized in that said damping means (8,12), said spreader (9) and said pivot (10) are mounted on a rigid plate (14) so as to constitute a unitary unit capable of being mounted on said cabin (1) of interchangeably.   2. Door closing mechanism according to claim 1, characterized in that said damping means (8,12) are gas springs.   3. Door closing mechanism according to claim 2 characterized in that the ball joints (13a, 13b) of articulation of the gas connection springs (8) on said lifting beam (9) are located above the median plane (P ) of said spreader while the ball joint (13c) of articulation of the main spring (12) on   said spreader is located below said median plane.   4. Door closing mechanism according to one of the   previous claims characterized in that said platinum   (14) comprises a lower veil (15) and an upper veil (16), the pivots (6, 10) of articulation of said elements (6) coupled to said damping means (8) and / or of said lifter (9) being defined by orifices (15a, 15b, 16a, 16b)   formed in said lower and upper sails.   5. Door closing mechanism according to one of the   previous claims, characterized in that said   plate (14) carries at least one limit stop (20,21) said leaves (2,3).   6. Door closing mechanism according to claim, characterized in that said stop (20) is a stop closing limitation of the leaves housed in the volume interior of said cabin (1).   7. Door closing mechanism according to   Claims 4 and 5, characterized in that said stop is   placed between said lower web (15) and said upper web (16). 8. Door closing mechanism according to   claims 5 and 7, characterized in that said stop is   housed in a U-shaped metal support (22) and fixed to said plate by means of assembly (23) of said   plate on the roof (5) of said cabin.   9. Door closing mechanism according to one of the   previous claims, characterized in that it comprises   a connecting lug (24) connecting said plate (14) to a   post (19) supporting said cabin (1).   10. Telephone booth (1) comprising a mechanism for   door closure according to one of the preceding claims.