FR2565284A1 - FIXED TOOTH CLOSURE DEVICE - Google Patents

Abstract

THIS DEVICE INCLUDES INSIDE A LOCK PALATRE 1, FIXED PREFERABLY TO A DOOR FRAME, A LEVER 2 SWIVEL AROUND A FIXED AXLE 3, ON WHICH THE PUSHBUTTON 4 OF A CYLINDER 5 BELOW IT ACTS. ACTION OF THE KEY OR THE PUSH-BUTTON 6 OF AN ELECTRO-MAGNET 7. THROUGH SEVERAL PARTS, INCLUDING A CAM 12, THIS LEVER COOPERATES WITH A TEETH FIXED TO THE DOOR FEATHER TO LOCK THE DOOR IN POSITION OF CLOSURE. THE INVENTION IS APPLICABLE IN PARTICULAR TO DOOR LOCKS.

Description

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  The present invention, as defined in this

  description, consists of a fixed tooth closure device housed in

  a lock palet, preferably located in the door frame, and on

  which acts a tooth provided in the rabbet of the door.

  The preferred device is constituted by a lever pivoting about an axis fixed between two opposite walls of a lock pallet, and capable of adopting different angular positions under the action of the push of a cylinder or an electro- magnet contained inside the paddle, this lever resuming its initial position under the action of an opposing spring. The said lever is articulated on the end of a rod whose free end is provided with a transverse roller and which during the movement of the link, is guided by its ends in grooves made in two cams, of which one is fixed to the pallet and the other can turn about a normal axis in relation to its plane and also fixed

lock paddle.

  The groove of the fixed cam is made in the longitudinal direction relative to the movement of the roller, the groove of the movable cam adopting a profile on which bears the above-mentioned roller, constituted by a straight part, parallel to that of the fixed cam, which continues with

  another curvilinear portion concentric with respect to its axis of rotation.

  This arrangement allows rotation of the movable cam only when the guide roller bears on the curvilinear profile portion, because if the aforementioned roller is on the radial portion of its groove, it remains locked without

no possibility of rotation.

  The moveable cam is also provided, at a point of its periphery, with a notch on the flanks of which it is likely to come into contact with the fixed tooth located in the rabbet of the door, when acting on it. ci, said tooth being incorporated therein. The lock pallet comprises a window whose position corresponds to the movable cam, to allow access of the tooth to the notch, both for opening and for

the closing of the door.

  When the lock cylinder is not actuated or the electromagnet is not energized, the spring acting on the pivoting lever locates it in a position such that the roller incorporated in the cam splines is located. on the locking position of the moving cam; in

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  Consequently, when the cylinder or the electromagnet is actuated, the roller bears on the curvilinear profile of the movable cam, allowing the tooth to move, out of the notch and thereby cause the

  rotation of the moving cam to allow this movement.

  When closing the door, the tooth can pass inside the indentation of the movable cam since it is in the same position as that which allowed the exit of the tooth, until it comes into abutment against the posterior flank of the notch, causing the rotation of the movable cam until the roller gets stuck, the door

  remaining locked until the cylinder key or the electro-

  magnet. The pivoting lever can also be fixed on an angular position which holds the roller pressed against an inclined shoulder (base), made at the junction of the rectilinear part and the curvilinear profile of the groove of the movable cam, which makes it possible to wedge the door without

block it.

  The pivoting lever can also be articulated with another lever carrying, at its free end, a bolt guided in the door of the lock and likely to occupy an emergency or reserve position relative to it, by lodging in a corresponding hole made in the

  rabbet of the door, thus allowing a second blocking.

  In order to help a better understanding of this description, we enclose a series of drawings which form an integral part thereof and in which the following points are represented by way of illustration and without limitation: Figure 1 is a perspective view of the lock palet

  comprising the closure device object of the invention.

  Figure 2 is a perspective view of the tooth fixed to the rabbet of the door, which completes the closure device object of the invention. Figure 3 is a longitudinal section of the lock paddle

  comprising all the elements of the device.

  Figures 4 and 5 are views of the movable cam in position

  locking and unblocking of the fixed tooth.

  Figure 6 is a view similar to that of Figure 4, illustrating how the blocking of the moving cam is obtained although there is a

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  1 clearance between the frame and the door, that is to say that the fixed tooth relative to the rabbet acts at a point of the notch of the radially movable cam

the farthest.

  Figures 7 and 8 are perspective views similar to those of Figures 1 and 2, locating the lock paddle in the rabbet of the

  door and fixed tooth in the frame of this same door.

  Referring to the numbering of the aforementioned Figures, we see how the fixed closure device object of the invention has, within a lock pallet 1, preferably fixed to the frame of the door, a lever 2 pivoting around a fixed axis 3, on which the pusher 4 of a cylinder 5 operates under the action of the key or the pusher 6 of an electromagnet 7, which can take an angular position, indicated in dotted lines in FIG. 3, opposing the resistance of a spring 8. The pivoting lever 2, is articulated on a rod 9, which carries at its free end a roller 10, whose ends slide in grooves in two cams 11 and 12, the cam Il being fixed on the batten 1, and the cam 12 pivoting about a fixed axis 13, in a normal position with respect thereto, and

parallel to the roller 10.

  The spline of the two cams 11 and 12 is clearly visible in FIGS. 4 and 5. The fixed cam 11 is provided with a groove 14 which goes in the radial direction with respect to the movable cam 12, the groove of the mobile cam 12 being determined by a radial groove 15, one of the flanks 16 continues in a curved profile 17, concentric with respect to the axis of rotation 13, on which bears the roller 10 of the rod

9.

  In the position of Figure 4, the movable cam 12 has its rotation locked around the axis 13, since the roller 10 is housed at the bottom of the grooves 14 and 15 of the two cams. In FIG. 5, the rotation of the movable cam 12 can take place since the roller 10 bears on the curvilinear profile 17 of the moving cam, this position being able to be taken at the moment when the cylinder 5 is actuated or on the electromagnet 7 so that the pivoting lever 2 moves to the position indicated by dots

in Figure 3.

  The rotation of the movable cam 12 is obtained by means of a tooth 18 fixed to the rabbet of the door 19, and which is able to come into contact with the movable cam 12 via a groove 20, practiced in the pallet 1, and in the corresponding position, as can be seen in Figure 1. The contact between the fixed tooth 18 and the movable cam 12 is established because this cam 12 is provided with a notch 21 formed at a point of its periphery, preferably in the opposite zone to that of the groove 15; this notch having corresponding flanks, anterior 22 and posterior 23, on which the

  tooth 18 when opening and closing the door respectively.

  Thus in the arrangement illustrated in Figure 4, the fixed tooth 18 can not cause the rotation of the cam 12 and therefore the door is locked in the closed position. When acting on one of the opening means 5 or 7, the roller moves to the position illustrated in FIG. 5, and consequently the fixed tooth 18 can move towards the left of this figure, taking advantage of the flank 22 of the notch 21, which allows the opening of the door, the movable cam 12 adopting the position shown in Figure 5. When closing the door, the fixed tooth 18 is likely to enter. contact with the posterior flank 23 of the indentation 21, causing rotation of the movable cam 12 in the direction of clockwise at the same time as the roller 10 is supported on the curved profile 17, reaches the radial groove 16 and occupies the bottom of this groove under the effect of the spring 8, then preventing all

  moving or leaving the fixed tooth 18.

  According to Figure 6 and in order to be able to perform the blocking of the door, even in the case where there is an undesired clearance between the frame and the door, that is to say when the tooth 18 makes contact with the posterior sidewall 23 of the indentation 21 at a radial point farther from the axis of rotation 13, which would prevent the fixed tooth 18 from causing a rotation of the cam 12 sufficient to make the roller 10 penetrate into the radial groove 16 and thus cause blocking, the invention provides an inclined shoulder 24 joining the rectilinear part 16 and the curvilinear profile 17 of the support roller 10 on the movable cam 12. Thus, although the total rotation of the movable cam 12 does not occur, the roller 10 reaches previously the inclined plane 24 and under the action of the spring 8

  is introduced into the bottom of the groove 15, blocking the fixed tooth 18.

  The invention further provides that the pivoting lever 2 can be

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  1 set in an angular position which maintains the roller 10 pressed against the inclined shoulder 24, thus obtaining a fastening without blocking the door. This position of the lever 2 is obtained by means of an eccentric abutment 25 (FIG. 3) actuated by an external control 26 relative to the lock pallet 1, as can be seen in FIG. recommended closure offers the best

  _-security guarantees, the invention provides a bolt 27, actuated by -e-- -

  same pivoting lever 2 and capable of being housed in an orifice 28 made in correspondence with the rabbet of the door 19. The aforementioned bolt 27 is guided in the lock pallet 1 and anchored by a key 29 at the end of a lever 30, articulated itself by its free end on

  the pivoting lever 2 with the corresponding key 31.

  Thanks to the existence of the security bolt 27, this can constitute the only blocking element of the door, the profiles of the movable cam being drawn so as to determine the corresponding position of the closure device, which allows to reduce the diameters and thicknesses of other elements such as axes, joints,

cams and the tooth.

  Figures 7 and 8 illustrate the device forming the subject of the invention with the lock pallet 1 'mounted in the rabbet of the door 19 and the fixed tooth 18 fixed in the frame 32, in contrast to what is

  shown in Figures 1 and 2 to obtain the same anchoring effect.

  The groove 15 of the movable cam 12, determined by the radial groove 16, the inclined shoulder 25 and the curvilinear profile 17 concentric with respect to the axis of rotation 13, on which the roller 10 bears, could also have been arranged to occupy an inner zone of the surface of the cam, by means of a radial closed groove extending in a concentric curvilinear groove with respect to the same axis of rotation 13, made at its end closest to the axis of rotation. In this case, the pivoting lever 2 would be articulated at a central point and the spring 8 would cause the lever 2 to accommodate the cylinder 10 in the end farthest from the groove, this

  position corresponding to that of the blocking of the cam.

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Claims (6)

  1 1. DEVICE FOR FIXED TOOTH CLOSURE, characterized in that it has a lever pivoting at an inner point and about an axis fixed to the lock pallet, whose side flank is actuated by the push of a cylinder or an electromagnet which causes the push of its other end on a rod articulated at this end, this rod carrying an extreme transverse roller which can move when its ends are housed in grooves in two cams, of which one is fixed to the palaver while the other rotates about a fixed axis and in normal position relative to it; the groove of the fixed cam having a radial direction relative to the movable cam and that of the latter having a similar groove which is extended at one of its ends, and perpendicularly, to another curvilinear and concentric profile with respect to the 'axis; in that there is a spring holding the rod with the roller at the radial point farthest from the curvilinear profile, the rotation of the movable cam remaining blocked until the cylinder is actuated to position the roller in correspondence with the profile curvilinear of the movable cam; in that the movable cam is provided with an indentation at a point of its periphery where the fixed tooth provided in the rabbet of the door can be housed, accessing its interior via a corresponding opening made in the pallet when the movable cam is in a rotational position in which the roller is on the curvilinear profile and the anterior flank of the notch being tangential to the rectilinear profile of the extreme edge of the fixed tooth when the door closes, the arrival in abutment of the fixed tooth on the rear side of the indentation of the movable cam originating in the progressive closing position of the door, this cam rotating until the roller reaches the right groove and moves away under the action of   spring> blocking the rotation of the cam and consequently the door.   2. FIXED TOOTH CLOSURE DEVICE, according to claim 1, characterized in that the groove of the movable cam has a shoulder inclined at the junction of its rectilinear and curvilinear portions of the bearing surface of the roller 3. FIXED TOOTH CLOSURE DEVICE, according to   1 and 2, characterized in that the pivoting lever can be   attaching to an angular position which holds the roller pressed against the inclined shoulder of the groove of the movable cam, which allows the fixing without locking of the door by means of an external control of the   lock paddle that actuates an eccentric stop.   4. FIXED TOOTH CLOSURE DEVICE, according to   1 and 2, characterized in that the pivoting lever articulated to   its free end on that of another lever, also pivotally attached, and its other end to a bolt guided in the door of the lock is likely to occupy an emergency or reserve position to come to lodge or not in a blocking hole practiced in the rabbet of the door.   5. FIXED TOOTH CLOSURE DEVICE, according to   preceding claims, characterized in that the groove of the cam   movable does not retain the roller, the free rotation of the cam being born at the time of opening or closing of the door, when the fixed tooth abuts on its flanks, the rotation of the cam being used to drive the roller which itself causes the unlocking bolt.   6. FIXED TOOTH CLOSURE DEVICE, according to   preceding claims, characterized in that the fixed tooth is located   in the frame of the door and the lock paddle disposed in the rabbet of the door.