FR2776695A1 - Door or window lock with return pusher - Google Patents

Abstract

The lock consists of a housing (1) fitted within the thickness of the door or window, containing a nut (3) turned by a drive bar (4) to operate a latch (5), long bolts (6, 7) and/or a fixed bolt (8). The nut is able to turn freely inside the housing and has an outer crown (9) with a slot (10) for a pin (11) on a sliding return pusher (12) moved parallel to the back edge of the housing by springs (14).

Description

The present invention relates to

  a lock for an opening, such as a door, window, French window or the like. It relates more particularly to a lock whose mechanism is housed in a housing adapted to be embedded in the thickness of an opening, inside

  a groove formed in the edge of the opening.

  This lock comprises a follower driven by an operating member, of the handle or crutch type. This follower controls, according to its direction of rotation, different means for locking the opening, such as a latch bolt, rods for the lever carrying rollers or rollers adapted to cooperate with strikes made in the frame, and / or a deadbolt which can also be operated by means of a key

cooperating with a barrel.

  A lock of this type is for example described in French patent application no. 0O 2 747 422 in the name

of the Applicant.

  It is known to provide in this type of lock an elastic return device which makes it possible to reposition the follower and the operating member in an initial rest position, after each action on the operating member to lock or unlock

  the different locking means.

  In the aforementioned French patent application, the return device comprises a rack associated with a return spring and the follower comprises on a peripheral crown a toothing meshing with the rack. During the rotational movement of the follower, the rack is moved longitudinally by compressing the return spring. When the operating member is released, the return spring relaxes, bringing the rack and the nut back into their initial position

rest.

  However, this rack is housed between the follower and the rear edge of the housing, to the detriment of the space available in the housing to house the follower which must nevertheless have a diameter sufficient to withstand the mechanical stresses exerted by the various locking means controlled. by this follower. The aim of the present invention is to solve the aforementioned drawback and to propose a lock with means for returning the follower to the initial position.

  space-saving across the width of the lock housing.

  The lock for an opening covered by the invention comprises a housing adapted to be housed in the thickness of the opening and a follower driven by an operating member and controlling locking means, such as a latch bolt, locking rods and / or a

deadbolt.

  According to the invention, the follower is mounted to rotate freely in the housing and comprises a peripheral crown comprising a housing for a finger of a return push-piece mounted to slide in the housing, in a direction parallel to the rear edge of the housing, and cooperating with elastic return means, the peripheral crown comprising on either side of the housing a convex bearing adapted to

  cooperate with the finger of the return button.

  Thus, the rotation of the follower has the effect of moving the finger of the return pusher on one of the convex surfaces of the peripheral ring of the follower, against the force exerted by the elastic return means. The latter then contribute to bringing the finger of the return pusher into the housing of the peripheral crown, and thus to

  return the follower to its original position.

  Thanks to the housing and the convex bearing surfaces of the follower, the action of the pusher on the follower is exerted directly in the direction of movement of the

  pusher, parallel to the rear edge of the case.

  This device does not require placing, as in the devices concerned, a rack for transmitting movement between the rear edge of the

housing and follower.

  This space can thus be fully occupied by the follower, which makes it possible to increase the diameter of the latter for a given housing width and a

  determined position of the axis of rotation of the follower.

  Other features and advantages of

  the invention will also appear in the description below

after.

  In the accompanying drawings, given by way of nonlimiting examples: - Figure 1 is a front view of a lock according to a first embodiment of the invention, without the housing cover, the lock being unlocked; - Figure 2 is a view similar to Figure 1, the lock being locked; - Figure 3 is a front view of a lock according to a second embodiment of the invention, the lock being locked; - Figure 4 is a view similar to Figure 3, the lock being unlocked; - Figure 5 is an exploded view of the follower and the control levers of the embodiment of Figure 1 and - Figure 6 is an exploded view of the follower and the control levers of the embodiment of Figure 3. With reference to the figures 1 and 2, an opening lock comprises a housing 1 adapted to be housed in the thickness of the opening, and in particular in the bottom of a groove provided on the edge of the opening for

  house the rods for the lever and the headrest 2.

  A follower 3 is driven by an operating member 4 shown diagrammatically by a dashed line on the

Figures 1 and 2.

  This follower 3 controls locking means and in particular a latch bolt 5, a high rod 6 and a base rod 7 of a bolt and a deadbolt 8. More specifically, the rods 6 and 7 can carry rollers cooperating with strikes fixed in the frame, or can activate one or

several auxiliary bolts.

  The follower 3 is mounted to rotate freely in the housing 1 and comprises a peripheral crown 9 comprising a housing 10 for a finger 11 of a pusher

reminder 12.

  This return pusher 12 is slidably mounted in the housing 1, in a direction F parallel to the rear edge 13 of the housing 1 and cooperates with means

elastic return 14.

  The peripheral ring 9 has on either side of the housing 10 a convex surface 15 adapted to

  cooperate with the finger 11 of the return pusher 12.

  The elastic return means 14 comprise at least one spring 14 (in this example two in number) disposed between the return pusher 12 and a wall

  upper side 16 of the housing 1.

  As best illustrated in Figure 5, the housing is formed of a concave notch 10 to

  rounded end forming the convex surfaces 15.

  The finger 11 of the return pusher has a curved portion 17 adapted to match the concave notch

  of the peripheral ring 9 of the follower 3.

  The latter comprises in known manner a female square 18 capable of cooperating with the male square 19 of

the operating member 4.

  The follower 3 is associated with a lever 20 for actuating a bridge 21 at the ends of which are fixed the rods 5 and 6 of the lever which are,

  in this embodiment, monodirectional.

  The follower 3 is also associated with a lever

  22 for turning the latch 5.

  These two levers are each provided with a cylindrical bore 20a, 22a, by which they are mounted free

  in rotation on a cylindrical bearing of the follower 3.

  They each further comprise a cutout 20b, 22b opening into corresponding bores 20a, 22a and whose radial edges are adapted to cooperate with a

post 23 of the follower 3.

  In known manner, the radial edges of each of the cutouts 20b, 22b, are angularly spaced by a value greater than that of the angle formed by the faces of the tenon 23 of the follower, in order to dissociate the movements exerted on the follower 3, to control the latch 5, from those exerted, on this same follower

  3, to control the movement of the rods 6 and 7.

  In this example, the lever 20 is provided at its free end with a slot 24 adapted to straddle a lug 25 of the easel 21. The latter is slidably mounted in the housing 1 and comprises tenons 26, 27 to conventionally ensure the translation link

  of the easel 21 with the high 6 and low 7 rods.

  The other lever 22 is provided with a free end in the shape of a finger 28 capable of cooperating with an axis 29 disposed transversely at the end of the tail of the

U-bolt 5.

  We will now describe the operation of

this lock.

  When the mechanism is in the unlocked position, as illustrated in FIG. 1, the drive of the operating member 4 has no effect on the lever 20 for actuating the bridge 21 but causes the lever 22 to pivot in the direction of the arrow G. This pivoting allows the finger 28 to come into contact with the axis 29 to cause the withdrawal of the latch bolt 5 inside the housing 1, against

a return spring 30.

  This rotation of the follower 3 brings one of the convex surfaces 15 into contact with the finger 11 of the return pusher 12, which causes the lifting of

  the latter with compression of the springs 14.

  As soon as the operating handle 4 is released, the springs 14 relax and force the finger 11 to penetrate into the notch 10 causing the elastic return of the handle to its initial rest position. To bring the lock into the locking position as illustrated in FIG. 2, the member

  4 must be pivoted upwards.

  This pivoting has no effect on the lever 22 for actuating the U-bolt, but causes the pivoting downward, in the direction of arrow H, of the

lever 20.

  Under the effect of this pivoting, the bridge 21 moves vertically from top to bottom, driving in the direction of the arrow F the two rods for the lever.

6 and 7.

  This reverse rotation of the follower 3 also has the effect of bringing a convex part 15 in contact with the finger 11 of the return push-piece which moves

  then upwards by compressing the springs 14.

  As soon as the operating member 4 is released, the follower 3 is returned to the initial position by the finger 11 which is housed in the notch 10 of the

follower 3.

  Thanks to this structure, the entire mechanism

  actuation of the rods is compact.

  In addition, the space occupied by the return pusher 14, in the height of the housing 1, does not create

  constraints to size the follower 3.

  The distance L, between the headrest 2 and the axis of the follower 3 can have a value of 40 mm which allows

  reduce the total width of the housing 1 accordingly.

  This width E can thus be reduced to 60 mm.

  A second embodiment of the invention is

  shown in Figures 3, 4 and 6.

  Identical references are used for the elements common with the first embodiment and

  only the differences will be described in detail below.

  below. As illustrated in FIG. 6, the follower 3 has a notch 10 on a peripheral ring 9 identical to that previously described with reference to

Figure 5.

  A lever 22 for controlling the latch 5 and a lever 20 for actuating the rods 6, 7 are

  mounted in the same way on the follower 3.

  Only the lever 20 for actuating the rods 6, 7 is different in order to control the movements of the

  rods 6, 7 in opposite directions.

  The lever 20 is provided with a lug 31 mounted sliding in a slot 32 in the easel 21 as illustrated in FIGS. 3 and 4. Furthermore, it has in its upper part a toothing 33 cooperating with a toothing 34 provided at one of the ends of a

  secondary lever 35, articulated at 36 on the housing 1.

  This secondary lever 35 is provided at its other end with a slot 37, the edges of which form a slide for a finger 38 secured to a second bridge 39 on which the upper rod 6 of is fixed.

the cremone bolt.

  The mounting of the U-bolt 5 is also

  modified compared to the first realization.

  The lever 22 for actuating the latch 5 has a free end in the shape of a finger 28 cooperating with the end 40 of a lever 41. The latter is articulated, by its other end 42 on an axis 43 of the housing. It comprises substantially at mid-length an opening 44 through which it is articulated at 45 on the

tail of a bolt 5.

  A return spring 46 acts on the lever 41 to hold the latch 5 in the extended position.

housing 1.

  The operation of this locking mechanism is almost identical to that described for the

first achievement.

  When the lock is in the rest position, as shown in FIG. 4, lowering the handle 4 downwards has no effect on the lever 20, but causes the lever 22 to pivot. This pivoting allows the finger 28 to come in contact with the end

  lever 41 which causes the withdrawal of the half bolt

  turn 5 inside the housing, against the spring

recall 46.

  To bring the lock to the locked position, the handle 4 must be pivoted upwards. This pivoting has no effect on the lever 22 for actuating the latch bolt, but causes the lever 20 to pivot downwards. Under the effect of this pivoting, the bridge 21 moves vertically towards

  the bottom by driving the bottom rod 7.

  Simultaneously, the toothing 33 of the lever 20 meshing with the toothing 34 of the secondary lever 35 causes the pivoting of this lever upwards, and by the second bridge 39, the displacement of the rod.

  upper in opposite direction to that of the lower rod 7.

  It will be noted that this mechanism for actuating the rods has the advantage, for an equal angular stroke of the follower 3, of obtaining on the rods 6 and 7

  identical strokes of the order of 18 mm.

  This is a very important advantage which

  is added to the reduction in the depth L of the housing 2.

  This increase in the travel of the rods increases the length in engagement in their respective keepers of the top and bottom bolts, formed by the ends of the rods, but is also advantageous for the roller rods because it makes it possible to better take account of the functional games and of '' achieve better locking and clearance with

rollers out of their keepers.

Claims (4)

  1 - Lock for opening, comprising a housing (1) adapted to be housed in the thickness of the opening and a follower (3) driven by an operating member (4) and controlling locking means, such as a U-bolt (5), locking rods (6, 7) and / or a deadbolt (8), characterized in that the nut (3) is mounted to rotate freely in the housing (1) and includes a peripheral crown (9) comprising a housing (10) for a finger (11) of a return pusher (12) slidingly mounted in the housing (1), in a direction (F) parallel to the rear edge (13) of the housing (1), and cooperating with elastic return means (14), the peripheral crown (9) comprising on either side of said housing (10) a convex surface (15) adapted to cooperate with the finger (11) of said pusher reminder (12).   2 - Lock according to claim 1, characterized in that the elastic return means (14) comprise at least one spring (14) disposed between the return pusher (12) and a side wall upper (16) of the housing (1).   3 - Lock according to one of claims   1 or 2, characterized in that the housing (10) is formed by a concave notch (10) with ends   rounded forming said convex bearing surfaces (15).   4 - Lock according to claim 3, characterized in that the finger (11) of the return pusher (12) has a convex part (17) adapted to match the concave notch (10) of the crown device (9) of the follower (3).