ES2709189B2 - Mechanical lock for community doors - Google Patents

Description

Mechanical lock for community doors

TECHNICAL FIELD

The present invention refers to a non-slip latch lock, of the type used in doors for common areas of neighboring communities, portals, housing estates, shared spaces or offices, which has a simplified mechanism made up of three pieces by means of which it can operate the latch both with a handle located on the inside of the door and through a key that can be inserted on both sides of the door.

BACKGROUND OF THE INVENTION.

Several models of locks are known to be installed in portals and common areas of neighboring communities.

When the lock lacks electrical means to open it remotely, the neighbors must manually open the door with a key, if they do it from the outside or from the handle if they do it from the inside. In these cases, the lock always incorporates a slip that allows the closing without actuating the handle. However, this type of lock has little acceptance because it forces the residents of the community to go to the door to open their visits.

When the lock includes electrical means that allow it to be opened remotely, residents must not move to open it for their visitors. In these cases the slip fits into a strike with electrical means that allow the slip to retract to open it. However, these locks are not very secure since the slip is easily manipulated from the outside by means of a flexible sheet inserted into the space between the lock and the strike.

In response to this problem, locks have been developed that do not have a slip, but only have a latch that is retracted by the crank or by a key, being safer than the slipping ones as they cannot be opened by the blade method. flexible.

This type of lock is used in combination with electric pivoting or sliding key strikes, which allow the bolt to enter and exit without the need to retract it.

Examples of this type of locks is the one described in patent P201731330.

This type of locks optimally fulfills its function, however, they are made up of a large number of parts, resulting in complex mechanisms, usually bulky and of high cost, which require doors with large areas for their installation, which prevents their installation on small doors with a minimalist design.

Consequently, it would be beneficial to develop a single latch lock that can be operated from a handle or through a key, made up of a small number of pieces, that allows a significant reduction in size and that consequently could be marketed at lower prices.

DESCRIPTION OF THE INVENTION

The present invention refers to a mechanical lock for community doors that solves the aforementioned problem since its mechanism consists of only three pieces of very simple manufacture and assembly, so that its cost is objectively lower than that of conventional locks and, at the same time allowing a significant reduction in volume, which facilitates the development of doors with a simpler and slimmer design.

Specifically, the novel lock is made up of a mechanism formed by a rotor with three radial arms that moves a latch retraction part and a latch retraction part blocking part.

The rotor has a first arm on which an eccentric associated with the axis of the interior handle of the lock incides, so that when the handle is operated, the rotor also rotates.

The latch retraction part has a horizontal flat configuration and moves on a horizontal slide made in the lock box, remaining in the extended latch position by the action of a spring whose force must be overcome to move the part towards the opposite side of the slide, corresponding to the retracted latch position.

The latch retraction part has a differentiated upper and lower profile.

The upper profile presents a silhouette with a vertical protuberance on which the third arm of the rotor falls, which, when turning, drives the part to the opposite side of the horizontal slide, overcoming the force of the spring, which causes retraction. of the latch, which is in solidarity with this piece.

The lower profile presents a silhouette with a notch into which fits the cam of a security bulb that is attached to the lock box. In its twisting motion, the cam engages with the notch and drives the latch retraction piece to the opposite side of the horizontal slide, overcoming the spring force, thereby also causing the latch retraction.

The function of the locking piece is to immobilize the latch retraction piece, preventing it from retracting, even if it is forced from the outside.

This piece has a vertical flat configuration overlapping with the latch retraction piece and incorporates vertical slides through which pivots are attached to the lock box, so that it can move up or down inside it, remaining in the latch position blocked by the action of a spring whose force has to be overcome to move the piece to the opposite side of the slide, corresponding to the released latch position.

The central area of this part undergoes a widening projecting towards the latch, in which an irregular slide is arranged, through which a protruding locking pivot of the latch retraction piece runs.

In said slide two parts are distinguished, a narrow upper area in which the locking pivot fits precisely, so that when it is located in said area, the movement of the latch retraction piece is disabled and a wide area lower by which the locking pivot can move freely so that the latch retraction part is released.

The upper end of the blocking part presents a horizontal protrusion on which the second rotor arm falls, which, when rotating, moves the blocking part upwards along its vertical slide and overcoming the spring force, with which the locking pivot that was located in the upper narrow area of the irregular slide goes to the lower wide area, releasing the retraction part of the latch.

The lower profile of the central widening of the blocking part presents a silhouette with a rounded corner at its end, on which the cam of the safety light bulb impinges, which when making its turning movement displaces the blocking part upwards, along its vertical slide and overcoming the spring force, with which the locking pivot that was located in the upper narrow area of the irregular slide passes to the lower wide area, releasing the retraction part of the latch.

DESCRIPTION OF THE DRAWINGS

In order to illustrate all that we have set forth so far, the present specification is accompanied by the description of a sheet of drawings in which an embodiment of the invention has been represented.

In said drawings, figure 1 represents a view of the lock box.

Figure 2 represents a view of the eccentric and the axis of the lever.

Figure 3 represents a view of the rotor

Figure 4 represents a view of the latch retraction piece with the latch.

Figure 5 represents a view of the locking piece.

Figures 6, 7 and 8 represent a succession of three views of the new lock corresponding to the action of the three arms of the rotor, in which the latch is retracted by means of the handle.

Figures 9, 10 and 11 represent a succession of three views of the new lock corresponding to the retraction action of the latch by means of the cam of the security bulb.

REFERENCE LISTING

1- rotor

2- retraction piece

3- locking piece

4- first rotor arm

5- second rotor arm

6- third rotor arm

7- eccentric

8- axis of the handle

9- horizontal slide

10- lock box

11- rounded corner

12- rounded vertical bump

13- latch

14- notch

15- cam

16- safety bulb

17- vertical slides

18- pivots

19- horizontal protrusion

20- widening

21 - irregular slide

22- locking pivot

23- upper narrow area

24 - lower wide area

DESCRIPTION OF A PREFERRED EMBODIMENT

The new mechanical lock for community doors a mechanism formed by a rotor (1) that moves a retraction part (2) of the latch (13) and a locking part (3) of the retraction part (2) of the latch ( 13).

The rotor (1) has a first arm (4) on which an eccentric (7) associated with the axis of the handle (8) is incident.

The retraction part (2) of the latch (13) moves on a horizontal slide (9) made in the lock box (10), advancing or retracting inside it and its upper profile presents a vertical protrusion (12 ) on which the third arm of the rotor (6) impinges, which when rotating, drives it and moves it through the horizontal slide (9), resulting in the retraction of the latch (13). On the other hand, its lower profile has a notch (14) in which the cam (15) of a safety bulb (16) engages, which, in its turning movement also drives and displaces the retraction part (2) of the latch (13) by the horizontal slide (9), with which the retraction of the latch (13) also results.

The blocking part (3) incorporates vertical slides (17) through which pivots (18) integral with the lock box (10) pass through, allowing it to ascend or descend inside it and its central area experiences a widening (20) in which an irregular slide (21) is arranged, through which a locking pivot (22) protruding from the retraction part of the latch (2) and in which an upper narrow area (23) is distinguished into which the locking pivot (22) can be inserted, disabled the movement of the retraction part of the latch (2) and a wide lower area (24) through which the locking pivot can move freely so that the retraction piece the latch (2) is released.

The upper end of the locking piece (3) has a horizontal protrusion (19) in which the second arm of the rotor (5) has an impact, which when rotated drives it and moves it up the vertical slide (17) with which the pivot lock (22) that moves through the irregular slide (21) passes from the upper narrow area (23) to the lower wide area (24), releasing the movement of the retraction part (2) of the latch (13).

The lower profile of the widening (20) of the locking part (3) has a rounded corner (11) on which the cam (15) of the safety bulb (16) falls, which, in its rotational movement, also drives and It moves the locking part (3) upwards, so that the locking pivot (22) also passes from the upper narrow area (23) to the lower wide area (24), freeing the movement of the retraction part (2). of the latch (13).

The operation of the device is as follows:

In rest position, by means of springs not shown, the latch (13) of the lock is extended, the retraction piece (2) of the latch (13) is locked and the locking piece (3) is in its position lower by immobilizing the locking pivot (22).

Starting from this position, the retraction of the latch (13) can be carried out in two ways, through the interior handle of the lock or through the key inserted in the security bulb (16).

If the actuation is carried out by means of the handle, the rotor (1), the upper profile of the retraction part (2) of the latch (13) and the upper end of the blocking part (3) come into action.

When turning the handle, the eccentric (7) associated with the axis of the handle (8) hits the first rotor arm (4) and makes it rotate (figure 6). When starting to rotate, the second rotor arm (5) affects the underside of the horizontal protrusion (19) present at the top of the locking part (3), moving it upwards, so that the locking pivot (22) goes from being fitted in the upper narrow area (23) of the irregular slide (21) to the lower wide area (24) of this, releasing the retraction piece (2) from the latch (13) (figure 7) .

Increasing the rotation of the handle, the third arm of the rotor (6) comes into contact with the vertical protrusion (12) of the retraction part (2) of the latch (13) and moves it along the horizontal slide (9) with the that the latch (13) retracts into the lock box (10) (figure 8).

If the actuation is carried out with a key inserted in the security bulb (16), the cam (15), the lower profile of the retraction part (2) of the latch (13) and the lower profile of the the locking piece (3).

By turning the key, the cam (15) of the security bulb (16) rotates until it meets the rounded corner (11) of the locking piece (figure 9).

As the rotation continues, the cam (15) moves the locking part (3) upwards, so that the locking pivot (22) goes from being fitted in the upper narrow area (23) of the irregular slide (21) to the lower wide area (24) of this, releasing the retraction piece (2) from the latch (13). At the same time, the cam (15) reaches the mouth of the notch (14) (figure 10) and engages it, so that, as the rotation continues, it displaces the retraction part (2) of the latch (13). ) by the horizontal slide (9) whereby the latch (13) retracts into the lock box (10) (figure 11).

Claims (3)

1. - Mechanical lock for community doors characterized in that it comprises: - A locking piece (3) of flat and vertical configuration that has: o One or more vertical slides (17) through which pivots (18) of the lock (10) pass. o A central widening (20) corresponding to an irregular slide (21) through which a locking pivot (22) of the retraction piece (2) runs, with a narrow upper area (23) in which the pivot is inserted. lock (22) disabling the movement of the retraction piece (2) and a wide lower area (24) through which the locking pivot (22) moves freely so that the retraction piece (2) is released. o A horizontal protrusion (19) located at the upper end that moves the locking piece (3) up the vertical slide (17), so that the locking pivot (22) passes the upper narrow area (23) to the lower wide area (24), releasing the retraction piece (2). o A rounded corner (11) located at its lower end where the cam (15) of the safety bulb (16) falls, which when rotating moves the blocking part (3) up the vertical slide (17) with the locking pivot (22) passes from the upper narrow area (23) to the lower wide area (24), releasing the retraction piece (2). - A retraction part (2) to which the latch (13) is associated, which moves through a horizontal slide (9) of the lock box (10), provided with a locking pivot (22) that is inserted into the irregular slide (21). In such a way that the retraction piece (2) at rest is kept in the latch position extended by the action of a first spring, the force of which must be overcome to move the piece to the opposite side of the horizontal slide. (9), corresponding to the position of the latch retracted, while the locking part (3) at rest, the latch (13) is kept b blocked by the action of a second spring whose force must be overcome to release the piece towards the opposite side of the vertical slide (17) corresponding to the position of the released latch. 2. - Mechanical lock for doors of units according to claim 1, characterized in that it comprises a rotor (1) with a first arm (4) on which an eccentric (7) associated with the axis of the handle (8) impinges. , a second arm (5) that impinges on the lower area of a horizontal protrusion (19) provided at the end or top of the locking part (3) and a third arm (6) that impinges on a vertical protrusion (12) of the retraction part ( 2). 3.- Mechanical lock for doors of units according to claims 1 and 2, characterized in that the retraction part (2) presents in its upper profile a vertical protuberance (12) in which the third rotor arm (6) affects which by turning it moves the retraction piece (2) along the horizontal slide (9), introducing the latch (13) inside the lock box (10), and a lower profile with a notch (14) in the that engages the cam (15) of a safety bulb (16) that rotates, displaces the retraction piece (2) along the horizontal slide (9) and inserts the latch (13) inside the box of the lock (10).