ES2820848T3 - Equipment for adjusting support legs for modular furniture in relation to a support surface - Google Patents

Abstract

Equipment (1) for adjusting the distance of a modular furniture (100) in relation to a support surface, comprising: at least one support leg (11) which in turn comprises: a fixed rod (24) that is extends between a relative lower end positioned, in use, in contact with the support surface, and a relative upper end connected, in use, to the modular furniture (100); a ruler (12) that rotates with respect to the rod (24) about a main axis of extension of the rod (24) operatively connected to a system for varying the height of the leg relative to the supporting surface in such a way that by rotating the rule (12) the height of the support leg (11) varies, at least one adjustment tool (10) comprising: a rotating bar (13) extending between a relative operating end (25) and a relative motion end (26); first drive means (15) associated with the operating end (25) of the bar and configured to move by rotating the bar on itself; second actuating means (17) located on the rotating rule (12) of a support leg (11) and configured to make the latter rotate; the first (15) and second (17) actuation means that can be configured between an operating condition in which they are in mutual contact for the mechanical transmission of the movement of the bar (13) towards the rule (12), and a second condition inoperative in which the first actuation means (16) is separated relative to the second actuation means (19); means (20, 21 and 22) for holding the operating end (25) of the bar (13) in position relative to the ruler (12) during the operating condition; characterized in that the clamping means (20, 21 and 22) comprise at least one fork (21) displaced relative to the first actuating means (15) along the main extension axis of the rod (24) and having a seat at least partially formed to coincide with the rod (24) to embrace the latter during the operating condition in such a way that it exerts a hold against the lateral movements of the equipment relative to the rod (24) without influencing the rotation of the the rule (12).

Description

DESCRIPTION

Equipment for adjusting support legs for modular furniture in relation to a support surface

This invention relates to equipment for adjusting support legs for modular furniture relative to a support surface and a furniture support device relative to the support surface.

More specifically, this invention is framed within the modular furniture sector and is preferably used for modular kitchens intended to be placed on the floor (also known as bases) or, generically, on a support surface.

These modular kitchen cabinets are supported by a plurality of legs that keep each modular cabinet off the ground. The support legs are normally adjustable in height in such a way as to increase or decrease the distance of the modular furniture in relation to the floor.

Indeed, once all the kitchen components are assembled (bases and cupboards) it is necessary to level these components in such a way as to optimize the functionality of the components and obtain a better aesthetic effect, with horizontal alignment of all surfaces.

The leveling of the kitchen bases is done by micrometric adjustment of the legs that are fixed under each base. The adjustment is carried out by means of a known system that is based on a rotation of a wide end of the leg known as the "rule" that acts on a system of movement in height of the leg. In other words, in order to lengthen a leg it is necessary to rotate the ruler in one direction of rotation, while to shorten it it is necessary to rotate the ruler in the opposite direction.

These legs are placed on both the front and the back of the bases according to the point of view of a user looking at the kitchen.

More specifically, the legs placed at the rear (closer to the wall that modular kitchens are placed on) are sometimes difficult to reach as the assembly technician must lie on the floor, stretching his arm under the unit. to turn the leg rule "blind" (manual adjustment) until reaching, by trial and error, the perfect leveling of the base itself. In other words, the disadvantages mentioned above are related to: the fact that the assembly technician has to stretch his arm under the modular furniture to reach the rear legs (very uncomfortable position);

the fact that during the adjustment of the legs the assembly technician, lying on the floor, cannot see the spirit level that rests on the upper surface of the modular furniture (the adjustment is made by trial and error);

the adjustment of the legs is difficult as the latter have a limited height (eg 100mm) and therefore it is often difficult to turn the ruler by hand (which has approximately the same dimensions).

In addition, modular kitchen bases with depths (measured from the front to the wall for the modular kitchen application) that are greater than those of the past are becoming more common, so that a base that once had a depth 600mm can now reach 700mm or more in depth. This makes the leg adjustment operation of the assembly technicians even more complicated and difficult, since it is necessary to fully stretch the arm under the modular furniture.

Alternatively, patent document WO2015 / 053637 proposes a system for adjusting the height of a leg having a wide base that is rotatable (and integral with the rod) with a circular rack. Furthermore, the system further comprises a separate tool having a gripping fork designed to embrace the wide base and a pinion designed to engage the circular rack to rotate it. However, the latter system has several disadvantages due to the fact that the pinion is substantially coplanar with the fork and the latter rotates around the base to perform the movement. Consequently, the user must push the tool towards the wide base and rotate a handle connected to the pinion. In this way, a contrast of movements is created, since the push of the tool towards the wide base prevents the latter from turning, which must rotate on itself to make the adjustment.

In this situation, the object of this invention is to provide equipment for adjusting the legs that overcomes the disadvantages mentioned above.

More specifically, the object of this invention is to provide equipment for adjusting the legs that facilitates the assembly of the kitchen bases during the leveling stage of the latter.

Another object of this invention is to provide leg adjustment equipment that facilitates the rotation of the ruler during leg adjustment through the use of separate tools.

The stated objectives are substantially achieved by equipment for adjusting the legs as described in the appended claims.

Additional features and advantages of this invention will emerge more clearly from the detailed description of several preferred, but not exclusive, embodiments of leg adjusting kit illustrated in the accompanying drawings, in which:

• Figure 1a is an axonometric side view of the equipment for adjusting the legs according to the invention in a rest configuration in which the means for actuating the adjustment of the leg are separated from the leg;

• Figure 1b is an axonometric side view of the equipment for adjusting the legs according to the invention in an operational configuration in which the means for actuating the adjustment of the leg are coupled to the leg;

• Figure 2 is a flat side view of the equipment for adjusting the legs of Figures 1a and 1b, where the equipment is attached to one of the legs;

• Figure 3 shows a rear axonometric view of a part of the equipment for adjusting the legs according to this invention;

• Figures 4 and 5 are perspective and side views, respectively, of the adjustment equipment designed to engage the respective legs to be adjusted;

• Figures 6a and 6b show an axonometric and lateral view, respectively, of a first alternative embodiment of the equipment according to this invention;

• Figure 7a shows an axonometric view of a second alternative embodiment of the equipment according to this invention;

• Figure 7b is an axonometric view of a variant of the second embodiment illustrated in figure 7a where the retention element is not present.

With reference to the aforementioned drawings, the number 1 denotes in its entirety the equipment comprising at least one support leg 11 for modular furniture 100 and an adjustment tool 10.

The support leg 11 comprises a rotary rule 12 that rotates about a main axis of extension of the leg. The rotating ruler 12 is operatively connected to a system for varying the height of the leg relative to a supporting surface (generally the floor) so that the height of the leg is varied by rotating the rotating ruler 12 (rotation by one direction increases the height while rotating in the opposite direction reduces the height). In other words, the ruler rotates relative to the rest of the leg.

Preferably, the rotary rule 12 widens relative to the rest of the leg 11 in a direction at right angles to the axis of the leg. Furthermore, the ruler 12 is preferably positioned at a lower end of the leg (in contact with the supporting surface) in such a way as to give the leg greater stability.

In other words, the leg 11 comprises a fixed rod 24 and the rotating rule 12 connected to the rod 24. The rod 24 is in contact with the modular furniture 100, while the rule is in contact with the supporting surface (for example , soil). The system for varying the height of the leg can be done in various ways. More specifically, a first variant of embodiment is defined by a thread on the inside of the lower end of the rod 24 (internal surface of the hollow rod 24) and a corresponding thread on the outside of a pin of the rotary rule 12, the pin protruding from the rotating rule 12 towards the rod 24 for insertion in the latter. Each thread extends in a direction parallel to the axis of the leg. The two threads engage each other for elongation / shortening of the leg by rotation.

In a second variant of embodiment, the system for varying the height of the leg comprises a thread on the outside of the lower end of the rod 24 and a corresponding thread inside a cavity of the rotating rule 12, where the rod 24. Each thread extends in a direction parallel to the axis of the leg. The two threads engage each other for elongation / shortening of the leg by rotation.

Basically, for the two modes described above, the rotation of the rotary rule 12 relative to the rod 24 results in the sliding of one thread over the other in such a way that it lengthens or shortens the leg according to the direction of rotation of the rotating rule 12. It should be understood that the two variants of modality described above are not limiting for the invention, since the system for varying the height of the leg could be achieved in various ways, even different from those described in this document.

It should be noted that the accompanying drawings substantially illustrate two embodiments of the equipment 1: the first embodiment illustrated in Figures 1 to 6 shows a leg 11 having a set of teeth positioned on top of the rotating ruler 12; while the second embodiment illustrated in Figures 7a and 7b defines a leg 11 having a set of teeth positioned on a lower annular surface of a protruding edge 29 of the rotary rule 12 (basically the rotary rule 12 is overturned). Regarding the first modality, two variants of modalities of the tool 10 are shown to adjust the height of the leg 11, where the first one has a system of transmission of movement that is more simplified than the system of transmission of movement illustrated in the second variant. Furthermore, the second embodiment variant has an elastic retaining element 27 parallel to the upper yoke 21 to retain the leg rod 24.

According to this invention, the equipment 1 for adjusting the leg comprises an adjusting tool 10 which in turn comprises a rotating bar 13 (Figures 1, 2 and 3) extending between a relative operating end 25 and an end of relative motion 26. Preferably, the rotating bar 13 has an extension greater than or equal to the distance of the rear leg from a front panel of the kitchen cabinet.

The accompanying drawings show that the rotating bar 13 comprises a hand grip 14 positioned at the movement end 26 to manually rotate the bar about its own axis of extension.

Furthermore, the equipment 1 comprises first actuating means 15 positioned at the operating end 25 of the bar 13 and configured to move when the bar rotates about itself. Preferably, the first drive means 15 comprise at least one gear wheel or one endless screw.

In the preferred embodiment illustrated in Figure 2, it can be seen, for example, that the first drive means 15 comprises a first sprocket 16 directly keyed to the operating end 25 of the bar 13, a second sprocket 17 that engages with the first according to a predetermined gear ratio and a third gear wheel 18 coaxial with the second.

Furthermore, the equipment 1 comprises second actuating means placed on the rotating rule 12 of a support leg and configured to rotate the latter. Preferably, the second drive means comprise a set of teeth 19 located on an outer part of the rotary rule 12.

The accompanying drawings show that the set of teeth 19 of the second drive means extends along a circular direction around the rotary ruler 12, that is, preferably in its upper circular crown. Advantageously, the set of teeth extends along the entire circumference of the upper annulus.

It should be noted that the rotary rule 12 protrudes laterally relative to the rest of the leg than a peripheral lateral surface facing upwards, that is, towards the modular furniture 100 located above. The second actuating means is applied to the peripheral side surface.

According to this invention, the first and second actuating means can be configured between an operating condition in which they are in mutual contact for the mechanical transmission of the movement of the bar 13 towards the rotating rule 12, and a non-operating condition in which the first actuation means are spaced relative to the second actuation means. In practice, to bring the first actuating means from the rest state to the operative state, it is sufficient to manually move the bar towards the leg to be adjusted.

In the embodiment illustrated in the accompanying drawings, the first and second drive means comprise drive teeth and together form a conical-type coupling. The teeth of the second drive means can be straight or helical.

In the embodiment illustrated in the attached drawings, the first drive means comprise a third gear wheel 18. Furthermore, the teeth 19 of the rotating rule 12 are of the conical type and form a conical pair defined by the rotation of each wheel on two axes. mutually orthogonal in such a way that they form a mechanical coupling to transmit the movement of the bar. Indeed, the third gear wheel 18 of the first drive means has a substantially horizontal axis, while the rotary rule 12, on the upper crown of which the teeth 19 are formed, has a substantially vertical axis.

In an alternative embodiment not illustrated in the accompanying drawings, the first drive means 15 comprise an endless screw rotating about a substantially horizontal axis and the second drive means comprise a plurality of teeth. Preferably, the latter can have a helical shape in such a way that it follows the shape of the endless screw.

In a first variant of this alternative embodiment, the first drive means 15 comprise a pair of bevel gears (spur gears) and a worm. More specifically, the first sprocket and the second sprocket of the first drive means define the bevel torque, while instead of the third sprocket there is a worm keyed in the second sprocket. In this way, the worm engages the second drive means 19. In other words, the conical pair moves the axis of rotation of the bar 13 by 90 °. The second drive means 19 comprise an outer series of teeth made on the rear surface of the rotary ruler 12 with straight or helical teeth.

In a second variant of this alternative embodiment, the first drive means 15 comprise a cascade of toothed wheels with straight or helical teeth and an endless screw. More specifically, the first sprocket and the second sprocket of the first drive means define the cascade of sprockets coupled to each other, while instead of the third sprocket there is the worm keyed in the second sprocket. In this way, the worm engages the second drive means 19. The second drive means 19 comprises an outer series of teeth made on the rear surface of the rotary rule 12 with straight or helical teeth.

Furthermore, in an alternative embodiment not illustrated in the accompanying drawings, the equipment 1 may comprise motor driven means associated with the moving end 26 of the rotary bar during the operating condition to move the bar around the respective extension axis in a manner motor driven.

In addition to the above, the equipment 1 comprises means 20, 21 and 22 for maintaining the operating end 25 of the bar in its position in relation to the rotating rule 12 during the operating condition to maintain the coupling between the first actuating means and the second actuation means. Indeed, the rotation of the gear wheel of the first drive means relative to the second drive means could move the bar laterally.

Consequently, the clamping means in position are configured to prevent lateral movements of the first actuating means relative to the second actuating means in such a way as to avoid interruption of the actuation.

Preferably, the clamping means 20 comprise an upper fork 21 located above the position of the ruler on the leg and having a seat at least partially formed to coincide with the rod 24. The upper fork 21 has a seat located at a plane substantially at right angles to the axis of the leg.

More specifically, the upper fork 21 is spaced in height relative to the ruler in such a way that it does not influence the rotation of the ruler.

Thus, during the operating condition, the upper fork 21 embraces the rod 24 in such a way as to maintain the drive from the bar to the rotary rule 12. It should be noted that preferably the clamping means (and, more specifically, the fork ) are connected to and protrude from the operating end 25 of the bar.

Preferably, the clamping means are located above the first actuating means. In other words, the upper fork 21 preferably separates from the rotary rule 12. In other words, the upper fork 21 preferably does not rest on the rotary rule 12 and does not act as a support element in the latter.

It should be noted that the clamping means comprise a retaining element 27 which is elastically deformable positioned in the upper yoke 21 and moves relative to the first actuating means along the main axis of extension of the rod 24.

More specifically, the retainer 27 comprises an open ring on its relative front side 28 and defines an inner seat formed substantially to mate with the rod 24 of the leg. In more detail, the opening on the front side of the ring 28 is smaller than the diameter of the rod 24 such that the open ring spans more than half of the outer surface of the rod 24. Furthermore, the front side 28 of the ring open, it has a guide that widens outwards to facilitate the reception of the rod 24 in a way that favors the connection of the tool 10 with the latter.

In the embodiment illustrated in Figures 6a, 6b, the retaining element 27 is preferably positioned below the upper yoke 21 but always above the rotating rule 12.

More specifically, the retaining element 27 is formed by two separate elements connected laterally relative to the leg rod 24 on opposite sides in such a way as to form the open ring.

In more detail, each separate element connects to the adjustment tool 10 on a wall facing the leg.

In the embodiment illustrated in Figure 7a, the retainer 27 is preferably positioned on top of the upper yoke 21. In the embodiment illustrated in Figure 7b, the retainer 27 is not present.

Furthermore, in the embodiments illustrated in Figures 1 to 6, the clamping means comprise a yoke 22 below the position of the rotary rule 12 on the leg and having an at least partially formed seat to coincide with the leg in such a way that, during the operating condition, the fork embraces part of the leg. Preferably, the retaining element 27 is connected between the upper fork 21 and the lower fork 22.

In the preferred embodiment, the rotating rule 12 defines the lower end of the leg. Preferably, the rotary rule 12 has at the bottom a spacer configured to keep the remainder of the rotary rule 12 raised from the support surface such that it can insert the lower yoke 22 between the rotary rule 12 and the support surface. . In this case, the lower yoke seat 22 is formed to receive the rotating rule spacer 12. The lower yoke 22 preferably connects to and protrudes from the operating end 25 of the bar 13. In other words, the two forks, upper 21 and lower 22, protrude from the bar 13 in parallel directions.

In the alternate embodiment illustrated in Figures 8 and 9, the rotary ruler 12 has an edge 29 that protrudes more than the rest of the rotary ruler 12 that defines a lower axial surface 30 (which faces the support surface). on which the set of circular teeth (first drive means) is made. In this case, the second actuating means 17 are positioned below the first actuating means 15.

More specifically, the rotary ruler 12 has a lower portion 31 that extends from the projecting edge 29 to the supporting surface with a diameter smaller than that of the projecting edge 29.

In that case, the distance of the first actuating means 15 from the ground is equal to the distance between the top of the second actuating means 17 and the ground.

Advantageously, this modality makes it possible to use the weight force of the modular furniture 100 on the leg 11 (and therefore also on the rotary rule 12) to maintain the connection between the first actuating means 15 and the second actuating means 17 without the two moving away according to a mutual repulsive force generated during the transmission of motion.

Regarding the transmission of the movement from the bar 13 to the second drive means 17, it should be noted that the first gear 16 located at the end of the bar 13 and the second gear 17 that engages with the first are inserted. , with the possibility of rotation on parallel axes, in at least one support plate 23, which forms a mutual restriction means. More specifically, at least one support plate 23 is perforated in the passage of the pins of the sprockets 16 and 17. It should be noted that the pin of the sprocket 16 corresponds to the end of the bar 13 in which it is keyed.

The plate 23 also constitutes in this case a support for the two forks, the upper fork 21 and the lower fork 22, and, more specifically, each of the sides of the plates opposite the respective fork is fixed at right angles to the license plate. In a variant of the preferred embodiment, only the upper fork 21 or the lower fork 22 could be present.

Furthermore, the bar 13 may comprise a rigid intermediate joint such that the bar can be used along directions at an angle.

This invention also relates to a tool 10 for adjusting the height of a support leg of the type described above. More specifically, tool 10, already described above and incorporated herein in its entirety, comprises:

• the rotating bar 13 extending between its own operating end 25 and its own moving end 26; • the first drive means 15 associated with the operating end 25 of the bar and configured to move as the bar rotates about itself;

• the means 20, 21 and 22 for holding the operating end 25 of the bar 13 in position relative to the rotating rule 12 during the operating condition.

More specifically, as described above, the clamping means 20, 21 and 22 comprise at least one fork 21 offset relative to the first actuating means 15 along the main axis of extension of the rod 24 and having a seat at least partially formed to coincide with the rod 24 to embrace the latter during operating condition in such a way as to exert a grip against lateral movements of the equipment relative to the rod 24 without influencing the rotation of the rotary rule 12.

More specifically, the second actuating means 17 are positioned above the first actuating means 15 or below the first actuating means 15 depending on the shape of the rotating rule 12. Indeed, if the first actuating means 15 are located on an upper axial surface (which preferably corresponds to the upper part of the rotating rule 12), then the second actuating means 17 are positioned above the first actuating means 15. In any other way, if the first actuating means 15 is located on a lower axial surface 30, then the second actuating means 17 is positioned below the first actuating means 15.

More specifically, in the case of the embodiment illustrated in Figures 1 to 6, the tool 10 comprises a fork 22 lower than the position of the rotary rule 12 on the leg and has an at least partially formed seat to match a base 32 of the rotary rule 12 in such a way that during the operating condition the fork 22 embraces part of the base 32.

An example not according to the invention relates to a device for supporting modular furniture 100 in relation to a supporting surface. The support device is derived directly from that described above, in relation to equipment 1, which is incorporated in its entirety below.

More specifically, the device comprises one or more support legs 11 described above, each of which extends between the support surface and the modular furniture 100 to separate the latter from the support surface.

Furthermore, the device comprises a system for adjusting the height of the leg configured to increase or decrease the height of the leg to increase or decrease the distance of the modular furniture 100 in relation to the support surface. More specifically, the adjustment system comprises the rotary rule 12 rotatable about the main relative axis of extension of the leg and connected to a mechanism for vertically moving the leg such that a rotation of the rotary rule 12 defines a vertical movement of the leg. to adjust the height of it, as mentioned above.

More specifically, the rotating rule 12 has the mechanical actuating means 19 (corresponding to the second mechanical actuating means described above) located on an outer surface and designed to engage with the first mechanical actuating means 15 of an outer bar.

In detail, the second mechanical drive means of the rotary rule 12 comprise a series of teeth positioned along the entire circumference of the circular crown of the rotary rule 12.

As already mentioned, the leg rod 24 extends from the cabinet 100 to the rotary rule 12 and has a portion above the rotary rule 12 configured to be clamped by the fork of the adjustment tool 10. In others In other words, the upper portion is a strip of the outer surface of the rod 24 placed on top of the rotating rule 12.

In terms of operation, the adjustment tool 10 allows the rotary rule 12 to be rotated by means of an extension (defined by the bar) that compensates for the distance of the rear leg 11 from the front of the modular furniture 100. More specifically, the adjustment tool 10 makes it possible to hold the rod 24 by means of a fork, while the actuating means 15, 17 act on the rotary rule 12 which can rotate freely without braking by the fork 21.

Adjustment is done by rotating the extension which can be done manually, either by using a special grip or by using a motor-driven system (eg an electric screwdriver).

This allows the modular furniture 100 to be arranged horizontally and at the desired height. In addition, this operation is carried out in a simple way because the assembly technician does not need to lie on the floor in front of or partially under the modular furniture 100, but can perform the necessary adjustment operations by standing in front of the modular furniture 100 and control in real time the variations in height and inclination that are made to the base 32 of the modular kitchen by rotating the rotary rule 12 of the leg. Indeed, the assembly technician stands in front of the modular furniture 100 (and not lying on the floor) and can easily observe the tool 10 with a spirit level placed, for example, on the upper surface of the modular furniture 100.

Indeed, in the leg 11 equipped with toothed gear the rotating rule 12 can be controlled in exactly the same way as the legs currently installed in the base 32 of the modular furniture 100 (that is, by direct manual rotation), which have the same dimensions.

In addition, once the base 32 of the modular furniture 100 has been placed, fixed to the other contiguous bases by means of specific connections of the prior art that join the sides, the modular kitchens are placed and with the help of a level the different heights are adjusted from the base. ground in a surprisingly easy way by rotating the operating end 26 of the bar protruding in front of the modular kitchens 100. The height adjustment of the legs occurs safely and quickly, because the assembly technician works in front of the modular cabinet 100, without having to pass the arm under the modular cabinet 100. It should be noted that its operation can be carried out either with the modular cabinet 100 full or empty.

Finally, this offers even more obvious advantages in the case of the base 32 of the modular kitchen furniture 100 with great depths and in the case of corner bases.

It should also be noted that this allows for easier rotation of the rotary ruler 12 since the setting tool 10 is not in the moving part precisely represented by the rotary ruler 12.

Claims (8)

i. Equipment (1) for adjusting the distance of a modular furniture (100) in relation to a support surface, comprising: at least one support leg (11) which in turn comprises: a fixed rod (24) extending between a positioned relative lower end, in use, in contact with the support surface, and a relative upper end connected, in use, to the modular furniture (100); a ruler (12) that rotates with respect to the rod (24) about a main axis of extension of the rod (24) operatively connected to a system for varying the height of the leg relative to the supporting surface in such a way that by turning the rule (12) the height of the support leg (11) varies, at least one adjustment tool (10) comprising: a rotating bar (13) extending between a relative operating end (25) and a relative moving end (26); first drive means (15) associated with the operating end (25) of the bar and configured to move by rotating the bar on itself; second actuating means (17) located on the rotating rule (12) of a support leg (11) and configured to make the latter rotate; the first (15) and second (17) actuation means that can be configured between an operating condition in which they are in mutual contact for the mechanical transmission of the movement of the bar (13) towards the rule (12), and a second condition inoperative in which the first actuation means (16) is separated relative to the second actuation means (19); means (20, 21 and 22) for holding the operating end (25) of the bar (13) in position relative to the ruler (12) during the operating condition; characterized in that the clamping means (20, 21 and 22) comprise at least one fork (21) displaced relative to the first actuating means (15) along the main extension axis of the rod (24) and having a seat at least partially formed to coincide with the rod (24) to embrace the latter during the operating condition in such a way that it exerts a hold against the lateral movements of the equipment relative to the rod (24) without influencing the rotation of the the rule (12). 2. The equipment (1) according to claim 1, characterized in that the fastening means (20, 21 and 22) comprise an elastically deformable retaining element (27) placed on the fork (21) and offset relative to the first drive means (15) along the main axis of extension of the rod (24). The equipment (1) according to any of the preceding claims, characterized in that the rotating rule (12) has an upper axial surface on which the first actuating means (15) are formed; the second actuation means (17) are located above the first actuation means (15). The equipment (1) according to claim 1 or 2, characterized in that the rotating ruler (12) has an edge (29) that protrudes further relative to the rest of the rotating ruler (12) defining a lower axial surface (30) on which the first actuating means (15) are made; the second actuation means (17) are positioned below the first actuation means (15). The equipment (1) according to any of the preceding claims, characterized in that it comprises a fork (22) lower than the position of the rotary rule (12) on the leg (11) and having a seat at least partially formed to coincide with a lower base (32) of the rotating rule (12); During the operating condition, the yoke (22) that embraces part of the lower base (32) of the rotating rule (12). The equipment (1) according to any of the preceding claims, characterized in that the first (15) and second (19) drive means comprise drive teeth and together define a gear coupling with straight teeth having parallel axes or cone-type incidents. The equipment (1) according to any of claims 1 to 5, characterized in that the first drive means (15) comprise an endless screw and the second drive means (19) comprise a plurality of teeth. 8. The system (1) according to any of the preceding claims, characterized in that the rotating rod (13) comprises a handgrip (14) placed at the end of movement (26) for manually rotating the rod (13) around its own extension axis.