MXPA97005264A - Interlocking system for archiver based on varil - Google Patents

Abstract

The present invention relates to an interlock assembly for use with two or more drawers arranged vertically and mounted on telescopic slide rails in a frame such as a filing cabinet so as to prevent the extension of a drawer once another drawer has been opened drawer. The interlocking system is interconnected with the stationary members of the sliding guides arranged vertically that are fixed to the filing cabinet. A pair of actuator followers, one upper and one lower, is slidably and transverse fit near the front of the stationary members so that the movement of one follower of the actuator towards the other displaces the other. A rod connects the follower of the upper actuator to a sliding guide with the follower of the lower sliding actuator of a sliding guide which is directly above it. An actuator is connected to the forward ends of the telescopic members of the sliding guides. As a telescopic member extends, the actuator of that sliding guide contacts and displaces the follower of the upper actuator of the sliding guide, which results in the upper displacement of the followers of the lower actuators of the sliding guides which are directly above the extended sliding guide. The extended sliding guide also prevents upward movement of the followers of the upper actuators of all the sliding guides that are directly below it. Consequently, all the followers of the actuators block the path of their respective telescopic members, making their extension impossible.

Description

INTERLOCKING SYSTEM FOR ARCHIVER BASED ON RODS BACKGROUND OF THE INVENTION This invention relates to an interlocking assembly for use with multiple drawers or storage units arranged vertically and mounted by means of a telescopic sliding guide assembly in a unit such as a side drawer filing cabinet. Specifically, this invention deals with an interlocking assembly which prevents the extension of any drawer once another drawer has been opened and which can be interconnected with a locking system to lock all the drawers in a closed position. Filing cabinets with multiple drawers arranged vertically can tilt when more than one drawer is open at the same time, creating a hazard. The inclination of the filing cabinet is the result of the displacement of the center of gravity of the filing cabinet when two or more drawers are opened. It is especially likely to tilt the filing cabinet when the open drawers contain relatively heavy materials. To avoid this inclination, many filing cabinets with vertical drawers REF: 25224 incorporate interlocking systems that prevent a drawer from opening if another drawer is open. Some interlock systems used today interconnect with the rear of the filing drawers as illustrated in J.S. 4,480,883. Its location hinders its installation and repair. In addition, the position of these interlocking mechanisms makes it difficult to interconnect these systems with locking systems typically located on the front of the filing cabinet on one of the two sides of the upper part of the archival skeleton. Current interlocking systems require that their components be installed or removed in sequential order. For example, it is necessary to install the interlock components that are between the lower sliding guides before the component is between the higher sliding guides. An example of this design is an interlocking mechanism that uses a stack of locking bars as indicated in US Pat. No. 4,637,667. In addition, the components that are close to the lower sliding guides can not be removed without first removing the components that are close to the higher sliding guides. This results in a complex and expensive time-consuming installation and removal process of the interlocking assembly. In addition, most interlock assemblies used today are designed to be used with drawers of a specific height and can not be easily modified to be used with drawers of different heights. Most interlock assemblies used today also require that their components be constructed with precise tolerances. A displacement of these tolerances can result in malfunction of the interlocking assembly. At present, rotary cam interlock systems are also used, as indicated in PCT Application No. PCT / CA93 / 00359 (Publication International No. WO94 / 07989) that depend on instantaneous operation when opening the drawer and do not necessarily always maintain a constant displacement while the drawer is open. They do not provide for a positive and sustained drive to prevent malfunction of the system. This could result in unintentional unlocking of the drawers. Consequently, an interlocking assembly is necessary that can be interconnected with the front part of the sliding guides used to connect the drawers to a filing cabinet or other frame and which can be connected to the filing system of the filing cabinet. In addition, it is necessary to install interbiochemistry easy to install, that does not require precise tolerances and that can be easily modified for use with drawers that include drawers of different heights.

Compendium of the invention This invention provides a lockable sliding drawer assembly for use with two or more drawers arranged vertically and mounted on left and right sets of telescopic sliding guides spaced vertically in a frame such as a filing cabinet or storage unit. The interlocking assembly can be interconnected either with the set of left or right slide guides. Each assembly of sliding guides comprises a stationary member that is fixed to the filing cabinet and a telescopic member that faces the drawer. A couple of followers of the actuator, one upper and one lower, opposite each other are located in a sliding and perpendicular manner adjacent to the front end of each stationary member. Each follower of the actuator can slide from a position blocking the extension path of the telescopic module to a position that does not block such an extension path. While one follower of the actuator moves towards the other, it leans against the other and displaces it. For example, while the follower of the lower actuator begins to move upwards, it rests against the follower of the upper actuator and as the upward movement continues, so does the upward movement of the follower of the upper actuator. Rods are used to interconnect the follower of the upper actuator of a sliding guide with the follower of the lower actuator of a sliding guide immediately above. The rods can catch quickly and, if necessary, disengage from the followers of the actuator. When connected to the actuator followers, the rods are free to move vertically within reasonable limits. An actuator is fitted on the forward end of the telescopic member. The actuator has tapered surfaces. The tapered surfaces in the actuator followers come into contact with the tapered surfaces of the actuator when the telescopic member extends from its closed position or when it retracts from an open position. The actuator and followers of the actuator are preferably made of a polymeric material to reduce friction, cushion the impact between them and silence the operation of the sliding guide. By extending a telescopic member of a sliding guide, the actuator in front of the telescopic member comes into contact with the follower of the upper actuator of that sliding guide and moves it upwards. Accordingly, the follower of the actuator displaces the rod and the lower actuator interconnected in the sliding guide immediately above, bringing the follower of the lower actuator to a position which blocks the extension of the telescopic member of the sliding guide. At the same time, this follower of the lower actuator moves its follower of the opposite upper actuator. This process is repeated simultaneously and as a result all the followers of the lower actuators in the sliding guides located above the extended sliding guide enter a position that blocks the extension of their respective telescopic members.

Similarly, the extended sliding guide blocks the upward movement of the followers of the upper actuators of the lower sliding guides. As a result, the upward movement of all the followers of the upper actuators of the sliding guides which are below the extended sliding guide is prevented, thus remaining in a position that blocks the extension of their respective telescopic members. A locking mechanism for locking all sliding guides in a closed position can be easily incorporated into this interlock assembly. For example, a locking mechanism may be placed in such a way as to interfere with the upward movement of the uppermost actuator of the highest sliding guide. This will make it impossible to move upwards of any upper actuator follower of any sliding guide. Consequently, all the followers of the upper actuators will be in a position that blocks the extension of their respective telescopic members. In a similar way, a locking mechanism can also be incorporated anywhere along the ht of the assembly. For example, a member may be used to deflect any of the rods so that the upward displacement of all the followers of the lower actuators in the sliding guides immediately above the deflecting member is impossible. Accordingly, a follower of the actuator in a sliding guide of each drawer will be in a position to block the extension of its respective telescopic member.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an interconnection of an interlocking assembly with three sliding guides arranged vertically with all the sliding guides in a fully closed position. Figure 2 illustrates the interconnection of the interlocking assembly with three sliding guides arranged vertically with the central sliding guide open. Figure 3a is an isometric view of a stationary member of a sliding guide showing the notches that allow sliding adjustment of the followers of the actuators. Figure 3b is an isometric view of a stationary member of a sliding guide with followers of upper and lower actuators adjusted. Figure 3c is an end view of a stationary member with followers of the actuators mounted on the wall of a filing cabinet. Figure 3d is an end view of a stationary member with one follower of the actuator displacing another. Figure 4a is a side view of a follower of the actuator. Figure 4b is a front view of an actuator follower. Figure 4c is a top view of an actuator follower. Figure 5a is a top view of a retaining clip. Figure 5b is a side view of a retaining clip. Figure 6 illustrates the actuator attached to the forward end of the telescopic member. Figure 7 illustrates the contact made by the followers of the actuator in the actuator to force the actuator and its telescopic member into a closed position.

Figure 8 illustrates a locking member that deflects an intermediate rod in order to lock the sliding guides.

Detailed description of the preferred embodiments This invention is an interlock assembly for use with two or more drawers arranged vertically and mounted on telescopic slide rails in a frame such as a filing cabinet to prevent the extension of a drawer once another drawer has been opened. The interlock assembly is interconnected with telescopic slide guides that are used to mount drawers in the filing cabinet (Figures 1, 2). Telescopic sliding guides can have different designs. However, for descriptive purposes, this invention is described in terms of telescopic guides (10) with a stationary member in the form of a channel (12) fixed to the wall of the filing cabinet (35) and a telescopic member (14) fixed to the drawer (not shown). The telescopic member may be preferably attached to the outer stationary member by means of an intermediate member (16). For descriptive purposes, the term "telescopic member" as used herein refers to the sliding member of the sliding guide assembly. For slide guide assemblies that include an intermediate member, the term "telescopic member" refers to the sliding member of a two-member sliding guide and an intermediate sliding member of a three-element sliding guide. Each drawer is slidably connected to the filing cabinet using two sliding guides. A sliding guide is attached to the left side of the drawer and the other to the right side of the drawer. So the filer has a right and left set of sliding guides. The interlock assembly may be interconnected either with the left or right assembly of the sliding guides or with both. The stationary member (12) of each sliding guide is channel-shaped with a section of the web (18) from which the lateral arched sections (20, 21) that form the channel extend (Figure 3a). An elongate notch (22) extending across the vertical section (18) is formed proximate the forward end of the stationary channel. Preferably, the notch (22) is formed adjacent the forward end of the stationary member and typically has a width of less than one inch. As further illustrated in Figure 3a, the openings (28) are formed in the sections (20, 21) of the stationary member at the opposite ends of the notch (22). These openings are wider than the groove (22) formed in the core section of the stationary member and together with the groove (22) form a continuous opening. The three notches are aligned laterally crossing the channel and forming a continuous notch. Opposite followers of the actuator, one upper and one lower (32, 24) are slidably fitted within these notches (Figures 2, 3a, 3b). The follower of the upper actuator (32) is slidably fitted by the notch formed in the upper side section of the stationary member. Similarly, the follower of the lower actuator (34) is adjusted by the notch formed in the lower lateral section (Figures 1, 2, 3b). The followers of the actuator are normally fitted within the notches before the stationary member of the sliding guide is fixed to the wall of the filing cabinet (35) (Figure 3c). Once fitted within the notches, a portion of each actuator follower extends out of the stationary member beyond the side sections. For descriptive purposes, the part (36) of the actuator follower that always extends beyond the lateral section in the present is called "external part" of the actuator follower (Figure 1). The rear surface (38) of the actuator follower decreases in width (Figures 4a and 4c). This diminished part allows the rear surface of the actuator to fit and slide into the vertical groove in the vertical section of the stationary member. The wider portion (40) of the actuator follower is designed to fit and move within the notches (28) formed in the side sections of the stationary member. The narrower portion of the actuator follower serves as a guide for guiding the decreased rear portion of the actuator follower and thus guiding the sliding movement of the actuator follower. Each actuator follower has a laterally projecting member (42) and having a typically transverse and conical geometry with a rounded apex (Figures 4a, 4b). The inclined surfaces (44, 46) of the conical projection are preferably at 45 °. Once an actuator follower is slidably fitted within the stationary member, its conical projection lies between the two lateral sections (20, 21) of the stationary member. In addition, the conical projection has a length (48) such that it projects beyond the notch in the lateral section of the stationary member. As a result, once the follower is introduced into the opening, the conical projection prevents the actuator follower from sliding past a side section of the stationary member (Figures 3b, 3c). A vertical projection (50) extends perpendicularly beyond the conical surface as part of the rear side (38) of the actuator follower (Figures 4a, 4b). The vertical projections of the two opposing followers of the actuator are designed to support each other when one follower of the actuator slides towards the other (Figures 1 and 2). Therefore, as one follower of the actuator moves towards the other, it displaces the other follower of the actuator. An actuator retainer clip (52) can be used to retain the actuator followers within the stationary member of the slide guide (Figures 5a, 5b). The retaining clip is typically a metal strip arranged to form two sections mutually offset in parallel. A section (54) of the clip is fixed or fastened to the stationary member so that the other offset section (55) defines a space by the vertical notch (22) between itself and the surface of the filing cabinet on which the member is mounted. stationary. The projections of the actuator followers slide within that space (Figures 1, 2, 3a, 3b, 5a, 5b). To ensure that an actuator follower is always retained by the retaining clip, ie, to ensure that a vertical projection of an actuator follower does not slide past the area covered by the retaining clip, the projection (50) decreases along its width. In half of its width the projection has a length (56) longer than in the other half of its width. The diminished projections of the opposing followers of the actuator complement each other (Figures 1, 2). The external part (36) of the actuator follower has a depth greater than the length of the notch (28) in the side sections of the stationary member. This prevents the outer part from sliding down the side sections. The external part forms an internal vertical channel (65). The channel is formed by two side walls (60) connected by a side wall (62). The side wall (62) is part of the rear surface of the actuator follower (Figures 4b, 4c). The upper end of the channel (66) is open while its lower end (68) is limited by the lower part of the follower of the actuator. A small edge (70) is formed on the inner surface of each side wall. The edge crosses only a part of the inner surface of each side wall, both longitudinally and laterally, starting at the horizontal and lateral edges of the side wall. The rods (72) are used to interconnect the followers of the actuators of the lateral sliding guides (Figures 1, 2). For example, a rod connects the follower of the upper actuator (32) of a sliding guide with the follower of the lower actuator (34) of the sliding guide immediately above it. The rods used may have any transverse shape. However, for descriptive purposes, cylindrical rods are referred to herein. The rods are introduced into the channel opening of the external parts of the actuator followers. The rods are pushed by pushing them beyond the edges (70) on the inner surfaces of the side walls. The rods pass the edges and "snag" in place. The edges serve as retainers to hold the rods within the opening of the channel. The rods can also be easily removed, if necessary, by pulling them ("unhooking" them) beyond the edges. When they are introduced into the openings of the vertical channels, it is preferred that the rods can slide freely within the openings of the channels. An actuator (74) is fixed on the front of the telescopic member of the sliding guide. Once fixed, the actuator encloses the forward end (76) of the telescopic member (84) (Figure 2). The actuator has a flat side (78) parallel to the end end of the telescopic member. The two inclined surfaces (80, 82) extend towards the end of the telescopic member from the upper and lower end of the flat side. Preferably the surfaces are symmetrical about the longitudinal axis of the telescopic member (84). These surfaces are referred to herein as the forward inclined surfaces. These surfaces continue beyond the vertical plane of the end of the telescopic member and then bend gradually by approximately 90 ° towards the upper edge and the lower edge of the telescopic member, forming another set of angled surfaces (86, 88) (in the present identified as "back inclined surfaces") in relation to the longitudinal axis of the sliding guide. Although it is preferred that the front and rear inclined surfaces are inclined by 45 °, they may be inclined at other angles. The inclined surfaces of the conical projections of the actuator followers pass over the inclined surfaces of the actuator. Therefore, it is preferred that the inclination of the surfaces of the actuator corresponds to the inclination of the surfaces that contact the conical projections. When the followers of the actuators are in their fully extended position, that is, when their conical projections rest on the lateral sections of the stationary member, they do not interfere with the extension path of the telescopic member. When the first telescopic member is extended, the distance between the conical projections of the followers may be greater than the wider section of the actuator (Figure 7) by a very small margin. When the distance between the conical projections is less than the wider section of the actuator, the projections will present a blockage for the extension path of the actuator and therefore for the telescopic member.

In one embodiment, each follower of the actuator is allowed to slide approximately% inch from its extended position. When the telescopic inner member is in a closed position (Figure 1), the conical projections (42) of the follower of the lower actuator rest under the influence of gravity, fully extended against the lower lateral section (20) of the stationary member (12) of the sliding guide, while the follower of the upper actuator, also due to gravity, is in its fully closed position and its conical projection blocks the extension path of the telescopic member (14) (Figures 1, 2). If all the telescopic members in a filing cabinet are closed and the telescopic member of a sliding guide extends from its closed position, the upper forward inclined surface (80) of the actuator comes into contact with the preferably tapered surface (42) of the projection. conical follower of the upper actuator causing the actuator follower to move upwards (Figures 1, 2). Accordingly, the follower of the actuator pushes the rod (72), interconnecting it with the follower of the lower actuator of the sliding guide directly above it and bringing the conical projection of such follower of the lower actuator to the extension path of its telescopic member. At the same time, the vertical stepped projection (50) (Figures 3d, 4b) of the lower actuator rests on the vertical stepped projection of its opposite upper actuator, displacing the upper actuator. Similarly, all followers of the slide guide actuators that are located above the extended slide guide move in the same manner. Consequently, the conical projections of the followers of the lower actuators of all the sliding guides above the extended sliding guide are blocked and prevent the extension of the telescopic members of their respective sliding guides. Similarly, the extended sliding guide blocks the upward movement of the followers of the upper actuators of the lower sliding guides, that is to say, the sliding guides that lie beneath it. Therefore, the conical projections of the upper actuators of the sliding guides that lie under the extended sliding guide are blocked and prevent the extension of the telescopic members of these sliding guides.

Since the rods can slide into the channel openings of the actuator followers and since the path of the actuator trackers from their extended position to the closed position is relatively significant (e.g.,% inch for the preferred embodiment) ), with the realization of the lock within the first 1/8 inch of the path, an expert in the art will appreciate that the tolerances of the lengths of the rods do not need to be precise for the interlocking assembly to work properly. If a drawer, and therefore a sliding guide, is opened in such a way that a forward inclined surface '80, 82) of the actuator of the sliding guide comes into contact with any of the conical projections of the followers of the actuators, while another sliding guide is being opened, the closing or compressing movement (90) of the followers of the actuators (32, 34) will cause their surfaces (44, 46) to push forward inclined surfaces (80, 82) of the actuator generating a force along the axis of the telescopic member, causing the actuator and the telescopic member to move in a direction (92) inverse to the closed position (Figure 7). Further, when the telescopic member of the sliding guide moves to the closed position (Figure 7) after being extended, the rear inclined surfaces (86, 88) of the actuator will come into contact with the tapered surfaces (44, 46) of the Conical projection and will cause them to extend to allow the telescopic limb to close (Figure 2). To cushion the impact of the actuator with the follower of the actuator and to silence the operation, the actuator and the followers of the actuator are preferably made of a polymeric material. This interlock assembly can also be easily provided with a locking ability by interconnecting it with a separate locking system or mechanism. For example, a locking system (100) may consist of a member (102) that blocks upward movement of the followers of the actuator, thereby preventing any of the members of the sliding guides from opening. This can be achieved by using a locking member that can slide in front of the path of a rod connected to the follower of the upper actuator of the higher sliding guide member. As would be obvious to any expert in the art, the locking mechanism could be found anywhere along the interlocking assembly.

For example, as illustrated in Figure 8, a locking member or diverter (104) may be used to deflect any of the rods so that all followers of the lower actuators in the sliding guides directly above the diverter member are move upwards, while it is impossible to move upwards all the followers of the upper actuators of the sliding guides that are directly below the diverting member (104). Accordingly, all followers of the actuators will be in a position that blocks the extension of their respective telescopic members. It should also be obvious to one skilled in the art that the interlocking assembly of this invention can operate without a top actuator follower incorporated in the upper sliding guide and, similarly, without a lower actuator follower incorporated in the sliding guide. more low. The interlocking assembly described herein has several advantages. The interlock assembly of this invention allows modular construction. It can be used in filing cabinets with drawers of different heights. The only thing that is needed to accommodate the drawers of different heights is to use interconnecting rods of the appropriate length.

All additional required accessories remain the same. Another advantage is that the inventory costs associated with the interlocking assembly of this invention are reduced since only the length of the mounting mounting rods changes. further, the installation work is reduced, since the assemblers no longer need to build the interlocking system installing sliding guides from the bottom of the file cabinet upwards, as required by most of the current interlocking systems. The assemblers can install the rods in the order that suits them best. Furthermore, since the locking mechanisms (followers of actuators and interconnecting rods) maintain the drive movement while the drawer is open, there is virtually no possibility of the system malfunctioning and allow additional drawers to be fully opened or all drawers to be locked unwittingly. Although this invention has been described in certain specific embodiments, many modifications and additional variations will be obvious to those skilled in the art. Therefore, it is understood that within the scope of the appended claims, this invention may be practiced in a manner other than that specifically described. For example, when the adjacent drawers are narrow and their respective sliding guides are very close, the followers of the actuators can be adjusted together or adjoined so that they do not require the use of a connective rod. It is noted that in relation to this date, the best method known to the applicant for practicing said invention is that which is clear from the present description of the invention. Having described the invention as above, and claimed as property contained in the following:

Claims (21)

1. An interlock assembly of sliding drawers to prevent the extension of a drawer once another drawer has been opened, characterized in that it comprises: a first and a second sliding guide spaced apart, with the second sliding guide displaced vertically in relation to the first sliding guide, each of which sliding guides comprises a stationary member for attachment to a: unitary mazon and a telescopic member for attachment to a drawer, the telescopic member of which is extendable from a forward end of the stationary member; a pair of actuator followers, one upper and one lower, adjusted in a slidable and perpendicular manner in each stationary member, whose actuator followers are in opposite relation to each other close to the front end of the stationary member, where each follower of the actuator slides between a blocking position and a position that does not block the extension of the telescopic member and a plurality of longitudinal rods, each of whose rods has one end removably connected to a follower of the upper actuator of a sliding guide and another end connected in removable form to a follower of the lower actuator of a higher adjacent sliding guide, by which the extension of a first telescopic member moves the follower of the upper actuator and the rod of the first guide slidable up moving the follower of the lower actuator of the second guide slidable upwards so that it blocks and prevent the extension of the telescopic member of the second guide.

2. An interlocking assembly according to claim 1, characterized in that the ends of the rod are slidably connected with the followers of the actuator.

3. An interlocking assembly according to claim 1, characterized in that it further comprises an actuator connected to a leading end of each telescopic member for contacting and displacing the followers of the actuator as the telescopic member extends.

4. An interlocking assembly according to claim 3, characterized in that an actuator comprises an inclined upper surface for contacting a follower of the upper actuator and lifting the upper actuator follower as the telescopic slidable gt extends.

5. An interlock assembly according to claim 4, characterized in that the inclined upper surface of the actuator is inclined at an angle of approximately 45 ° relative to the longitudinal axis of the telescopic member.

6. An interlocking assembly according to claim 5, characterized in that a surface of the follower of the upper actuator that makes contact with the inclined upper surface of the actuator is inclined in such a way that it is parallel with the inclined upper surface of the actuator.

7. An interlocking assembly according to claim 4, characterized in that the actuator with the inclined upper surface further comprises an inclined lower surface for contacting a follower of the lower actuator, where the compression against the upper and lower surface of the actuator caused by the simultaneous contact of the upper surface inclined by a follower of the upper actuator and of the lower surface inclined by a follower of the lower actuator forces the actuator and consequently the telescopic sliding guide with which the actuator is connected to retract to a closed position.

8. An interlock assembly according to claim 7, characterized in that the inclined lower surface of the actuator is inclined at an angle of approximately 45 ° relative to the longitudinal axis of the telescopic member.

9. An interlocking assembly according to claim 7, characterized in that a surface of the follower of the lower actuator which makes contact with the inclined lower surface of the actuator is inclined in such a way as to be parallel to the inclined lower surface.

10. An interlock assembly according to claim 1, characterized in that each of the followers of the actuator, both upper and lower, of each sliding guide also comprises a projection oriented vertically and adjusted in a sliding manner in a space defined by a wall of the filing cabinet and the telescopic member of a sliding guide, where when the followers of the actuators move towards each other, the projections adjoin each other.

11. An interlock assembly according to claim 1, characterized in that it further comprises a retaining clip attached to each stationary member and extending over the vertically oriented projections.

12. An interlocking assembly according to claim 10, characterized in that it further comprises a central locking means for preventing a follower of the actuator in each sliding guide from moving to a position that does not block the extension of the telescopic member of the sliding guide.

13. A mounting of an interlock system according to claim 12, characterized in that the locking means comprises a locking member that is located above one of the higher sliding guides, where the member can slide between a locked position and an unlocked position, where when in the locked position, the locking member is located in such a way as to prevent the upper actuator of the upper guide driver from sliding to a position that does not block the extension of the telescopic member of the higher sliding guide.

14. An interlocking assembly according to claim 12, characterized in that the central locking means is located along the path of any rod and simulates the action of an open drawer by deflecting a rod and moving a follower of the upper and lower actuator blocking thus the extension of the telescopic members.

15. An interlocking assembly according to claim 10, characterized in that it further comprises: a third sliding guide which is located above the second sliding guide and which comprises a stationary member for fixing to the frame of the unit and a telescopic member for fixing to a drawer, the telescopic member of which is extendable from a front end of the stationary member; a pair of actuator followers, one upper and one lower, adjusted in a sliding and perpendicular manner in the stationary member of the third sliding guide, with the followers of the actuator in an opposite relation to each other close to the front end of the stationary member, where each The follower of the actuator can slide between a locking position and a position that does not block the extension of the telescopic member and a longitudinal rod with one end removably connected with the follower of the upper actuator of the second guide and another end removably connected with the follower of the lower actuator of the third sliding guide, wherein the extension of a telescopic member of a sliding guide moves the follower of the lower actuator of the sliding guide and all the followers of the lower actuators in the sliding guides that are above the extended sliding guide so all follower s of the displaced lower actuators block the extension of the telescopic member of its sliding guide and where it is impossible for any of the followers of the upper actuators in any sliding guide under the extended sliding guide to move from a position that blocks the extension of the guides. Telescopic members of the lower sliding guides.

16. An interlocking assembly of sliding drawers to prevent the extension of a drawer once another drawer has been opened, characterized in that it comprises: a first and a second sliding guide, the second sliding guide located above the first sliding guide, each of whose sliding guides comprise a stationary member for attachment to a unit comprising the drawers and a telescopic member for attachment to a drawer, the telescopic member of which is extendable from a front end of the member; an actuator member connected to a leading end of each telescopic member of the sliding guides; a follower of the lower actuator for engaging the actuator member connected to the front of the telescopic member of the second slide, with the follower of the lower actuator located near the front end of the stationary member of the second slide and the follower of the lower actuator attached to sliding and perpendicular to the stationary member of the second sliding guide; a follower of the upper actuator for engaging the actuator member connected to the front of the telescopic member of the first slide, with the follower of the upper actuator located near the front end of the stationary member of the first slide and the follower of the upper actuator attached to sliding and perpendicular form to the stationary member of the first sliding guide and a rod having one end removably connected with the follower of the upper actuator and the other end removably connected with the follower of the lower actuator, where the extension of the telescopic member of the first sliding guide moves the follower of the upper actuator upwards, which moves the rod upwards which in turn moves the follower of the lower actuator of the second sliding guide upwards in such a way as to block and prevent the extension of the telescopic member of the second sliding guide and where the extension The telescopic member of the second sliding guide prevents the follower of the upper actuator of the first sliding guide from moving in a position that does not block the extension of the telescopic member of the first sliding guide thus preventing the extension of the telescopic member of the sliding guide. first sliding guide.

17. An interlocking assembly according to claim 16, characterized in that the actuator connected to the front of the telescopic member of the first sliding guide comprises a sloping upper surface to make contact with the follower of the upper actuator and move the follower of the upper actuator to measure extending the telescopic sliding guide of the first sliding guide.

18. An interlocking assembly according to claim 16, characterized in that the actuator connected to the front of the telescopic member of the second sliding guide comprises a sloping lower surface for contacting the follower of the lower actuator.

19. An adjustable interlocking assembly of sliding drawers to prevent the extension of a drawer once another drawer has been opened, characterized in that it comprises: at least one intermediate sliding guide disposed vertically between a higher and a lower sliding guide, each of the sliding guides comprises a stationary member for fixing to the frame of a unit and a telescopic member for fixing to a drawer, the telescopic member of which is extendable from a front end of the stationary member; a plurality of upper and lower means for blocking and preventing the extension of a telescopic member, whose upper and lower means are slidably adjusted in an opposite and displacing relationship proximate the leading end of the stationary members of at least the intermediate sliding guides; means for engaging and displacing the upper means, the engagement means of which are close to a front end of a telescopic member and a rod for interconnecting each pair of means, one upper and one lower, adjusted in subsequent sliding guides, the rod of which has a end removably connected in a sliding relationship with the upper means of a sliding guide and the other end removably connected in a sliding relationship with the lower means of the subsequent sliding guide, where the assembly can accommodate drawers of different heights varying the length of the rods and the space between the sliding guides.

20. An interlocking assembly according to claim 19, characterized in that only a lower means is slidably fitted within the stationary member of the higher sliding guide.

21. An interlocking assembly according to claim 19, characterized in that only an upper means is slidably fitted within the stationary member of the lower sliding guide. SUMMARY OF THE INVENTION An interlock assembly for use with two or more drawers arranged vertically and mounted on telescopic slide rails in a frame such as a filing cabinet so as to prevent the extension of a drawer once another drawer has been opened. The interlocking system is interconnected with the stationary members of the sliding guides disposed in a vertical manner that are fixed to the filing cabinet. A pair of actuator followers, one upper and one lower, is fitted in a sliding and transverse manner near the front of the stationary members so that the movement of one follower of the actuator towards the other displaces the other. A rod connects the follower of the upper actuator to a sliding guide with the follower of the lower actuator of a sliding guide that is directly zima therefrom. An actuator is connected to the forward ends of the telescopic members of the sliding guides. As a telescopic member extends, the actuator of that sliding guide comes into contact and displaces the follower of the upper actuator of the sliding guide, which results in the upper displacement of the followers of the lower actuators of the sliding guides that is'-in directly above the extended sliding guide. The extended sliding guide also prevents upward movement of the followers of the upper actuators of all the sliding guides that are directly below it. Consequently, all the followers of the actuators block the path of their respective telescopic members, making it impossible to extend them.