WO2006117457A1 - Lock provided with two longitudinally offset locking positions - Google Patents

Abstract

The inventive door lock comprises an elongated body (2), a latch (4) pivotably and slidably arranged therein and a movable locking/unlocking member (5) which is slidingly placed in the body behind the latch in such a way that it is springably pressed against the rear part of the latch. Said door lock is characterised in that the latch comprises a rear part provided with a step (4D) and a finger (4E) adjacent thereto in such a way that, in the angular closed configuration, said step is substantially transversal with respect to the longitudinal axis and the finger is substantially longitudinal, the movable locking/unlocking member (5) comprises a front part provided with a shoulder (5B) and a cavity (5C) adjacent thereto in such a way that, in the angular closed configuration, the finger is engaged into the cavity and the shoulder and the step are placed near to each other, whereas, in the angular open configuration, the latch finger longitudinally rests against the shoulder of the movable locking/unlocking member.

Description

 Lock with two locking positions lonqitudinalementally offset

The invention relates to a lock with two locking positions longitudinally offset.

More specifically, the invention relates to a lock comprising a lock body elongate along a longitudinal axis and provided with a headrest, wherein a bolt is rotatably mounted about a transverse axis and sliding so as to retract or otherwise come protruding vis-à-vis the headrest and wherein a locking / unlocking member is slidably mounted and is biased resiliently so as to abut the rear of the bolt.

Various constraints have been defined for the operation of such a lock. Thus, in particular, document EP-1 291 479 describes the case of such a lock which is universal-mountable (which can therefore be mounted in any direction) and whose locking means of the bolt can be inhibited. , if needed.

The invention relates to a lock corresponding to another group of constraints, namely that of a lock adapted to open in a predetermined direction (with thus well defined angular positions of opening and closing), while being able to be unlocked easily, by a short stroke of the locking / unlocking member, regardless of the position of the position of the bolt, preferably involving a small effort even in the case where the flap to open is already subjected to a opening thrust, and easily to synchronously control another function, such as for example the locking / unlocking of another lock, particularly in the case of a door leaf with two similar locks at the top and bottom . The invention proposes for this purpose a door lock comprising an elongated body along a longitudinal axis, provided at its free end before a headrest, a bolt mounted in this body so as to be able to switch between an angular configuration and a closing closure. angular opening configuration and so as to be able to slide between an axial configuration of maximum projection and retraction configurations, and a mobile locking / unlocking member connected to a control rod and slidably mounted in this body behind this bolt being urged resiliently against the rear of the bolt, characterized in that the bolt comprises a rear portion having a recess and a finger adjacent thereto, such that, in the angular closure configuration, the recess is generally transverse to the longitudinal axis and the finger is substantially longitudinal, and in that the movable locking / unlocking member has a front portion comprising a shoulder and a recess adjacent to this shoulder, such that, in angular opening configuration, the finger is engaged in the recess and the shoulder and the recess are close to each other, while in angular configuration closing, the bolt finger is in longitudinal support against the shoulder of the movable blocking / unlocking member.

Thus, the axial distance between the bolt and the movable locking / unlocking member is different depending on whether the bolt is in angular opening or closing configuration, which makes it possible to control the locking, or not, of the bolt, possibly in synchronism with another part, mechanism or lock. However, the transition from an axial locking position to an unlocking axial position can be quite moderate, determined by the length of the finger and the depth of the hollow (these two dimensions are in practice substantially equal).

Preferably, the shoulder of the front portion of the movable locking / unlocking member extends away from the hollow to the inner surface of the body, which corresponds to a particularly simple geometry. Alternatively, this shoulder is bordered by the hollow of one side and a projection on the other side, which ensures a finger support on surfaces of the movable member, only. According to another advantageous characteristic of the invention, at least one of the laterally facing flanks of the finger and of the shoulder is inclined, in angular closure configuration, by a non-zero angle with respect to the longitudinal axis of the body so as to facilitate the escape of the finger from the hollow. Even more advantageously, these two surfaces are inclined. Such inclination has the particular advantage of facilitating the axial spacing of these parts, when you want to unlock the lock, including when the door leaf is already biased in the direction of the opening; regardless of thrust, unlocking only involves moderate efforts. According to yet another preferred feature of the invention, the bolt is pivotally mounted about a transverse axis defined by transverse lugs engaged axially between fixed stops (2B) relative to the body and movable stops (10B) carried by a axially movable piece (10) engaged in the body being biased elastically outwardly of the body. It follows that the movable stop defines the sliding stroke of the bolt.

Advantageously, the lugs are flattened and oriented so as to be transverse in the angular closure configuration. It follows that, if the stops are arranged so as to take the lugs sandwich in the closed configuration, these stops contribute to maintain the bolt in the closed configuration, since the slightest tilting of the bolt involves a tilting of the lugs and a recoil the mobile stop in the body.

Also advantageously, the movable stops resiliently urge the lugs against the fixed stops, which also contributes to the proper retention of the lugs.

According to yet another advantageous characteristic of the invention, the movable stops are defined by the slices of the limbs of a U-shaped part resiliently urged towards the outside of the body, these branches running along the inner surface of the body and the outer surface of the body. movable locking / unlocking member and that of the bolt. This corresponds to a geometry combining simplicity, the ability to implement mobile stops at will and a good guidance of moving parts.

According to yet another advantageous characteristic, the U-shaped part is urged by a spring compressed between the bottom of the body and the bottom of this U-shaped piece, this spring being disposed inside another compressed spring between a bearing surface of mobile locking / unlocking member and the bottom of the body.

This keeps the clutter at a moderate level.

According to yet another advantageous characteristic, the body is cylindrical. This corresponds to a simple and robust geometry. The invention also provides a lock assembly comprising a lock of the aforementioned type and a mechanism comprising a follower and a double lever arm, an arm is connected by a connecting rod to the control rod of the lock. It will be understood that, depending on what is connected to the other arm of this double arm, it is possible to synchronously control a second function, depending on the position of the movable locking / unlocking member of the lock in question.

A configuration of particular interest is that of such a lock assembly, characterized in that the lock is mounted at the top of a door leaf while the other arm is connected to another lock of the same structure, mounted in lower part of this wing. Thus the configuration of the top lock, with a doorframe which stops acting on the bolt as soon as the opening has become substantial, allows to synchronously control the bottom lock, regardless of the fact that there may not be exhaust bolt

(If it remains continuously against the ground, it never comes out completely and it is important to avoid a blockage outside the closed position of the wing.

Objects, features and advantages of the invention will emerge from the description which follows, given by way of nonlimiting illustrative example with reference to the accompanying drawings, in which: FIG. 1 is an exploded perspective view of a lock conforming to FIG. invention, adapted to cooperate with a striker also shown, FIG. 2 is an elevational view of a part of a control mechanism adapted to control another lock in synchronism with the lock of FIG. 1; FIG. 3 is a longitudinal sectional view of the lock of FIG. 1; 4 is another view in a closed but unlocked configuration, FIG. 5 is another view in a tilting configuration at the beginning of opening, FIG. 6 is another view in a closed configuration and unlocked in a maximum projection. seen in a retracted configuration allowing an escape vis-à-vis the striker, Figure 7 is another view in a locked and open configuration, - Figure 8 is another view in a tilting configuration during closure , Figure 9 is another view in a retracted configuration for crossing the striker, and Figure 10 is an end-of-closure configuration, identical to that of Figure 3.

The lock represented in FIG. 1 under the general reference 1 mainly comprises a body 2 provided at its free end with a headrest 3, a bolt 4, a mobile locking / unlocking member 5 mounted at the end of a rod of control 6, springs 7 and 8, a bottom piece 9 and a movable stop 10.

The body 2 is generally elongated along a longitudinal axis marked Z-Z having a substantially constant section over its entire length. It has the shape of a cylinder here. At its front end (or free end) this body is connected to the headrest 3 intended to be fixed on the edge of a door leaf, for example on the upper edge, by means of fasteners of any known type appropriate , for example screws (not shown). In the example considered here, the headrest and the body form a single piece. To his other end (or rear end) the body 2 comprises means 2A for fixing the bottom part 9: these fixing means are here of the bayonet type and cooperate with radial projections 9A that includes said bottom piece. Once in place, this bottom part 9 forms the bottom of the body 2. Opposite the headrest 3 is shown here a keeper 11 of any known type appropriate, adapted to be mounted on a fixed surface of a door jamb or on the edge of another wing. In the example, this strike is mounted on the upper blank of a door jamb. When the headrest is facing the strike, the door leaf is in the closed configuration; conversely, the headrest and the strike are offset transversely to the ZZ axis in open configuration.

In the body 2 is mounted the bolt 4, which comprises a front portion 4A beveled shape and a rear portion 4B. This bolt is adapted to tilt, even within the body 2, about a transverse axis, here materialized by transverse lugs, one of which is represented under the reference 4C; this tilting is possible between two extreme angular configurations in which the beveled portion is angularly abutted by one or other of its flanks against the inner surface of the body. This bolt is further adapted to slide longitudinally in this body, between an axial configuration of maximum projection and several retracted configurations. These axial and angular configurations can be combined, as will be explained below.

These lugs advantageously have a flattened shape which is, in the angular configuration of closure, transverse to the longitudinal axis, and which is, in angular configuration opening, inclined relative to this axis of an acute angle. In a simplified version, these lugs are simply cylindrical.

The front portion of the bolt is substantially symmetrical with respect to a plane passing through the top of the beveled shape and the center of the lugs (see line XX of Figure 3). As is apparent from the description which follows, the flanks of this beveled portion are intended to cooperate by camming with the striker. By against the rear portion has a 4D step adapted to be generally transverse to the longitudinal axis in angular closure configuration and to delimit a finger 4E which is substantially longitudinal in this angular closure configuration.

The movable locking / unlocking member 5 has a front portion 5A which is substantially complementary to the rear portion of the bolt in an angular closure configuration, that is to say that it comprises (see FIG. 5) a shoulder 5B substantially transverse adapted to be close to the recess 4D of the bolt; this front portion further comprises, on one side of this shoulder, a recess 5C adapted to receive the finger 4E of the bolt when it is in angular configuration closure. Thus, when the bolt is in the angular configuration of closure, this shoulder and this recess are close to each other.

In the example shown, the shoulder extends from this hollow to the inner surface of the body 2. Thus, when the bolt is in angular opening configuration (see Figure 5), the finger abuts against this shoulder 5B and against the inner surface of the body, so that there is a substantial distance between the bolt and the movable blocking / unlocking member. In variant not shown, this recess is connected to an axial projection oriented outwardly of the body. Advantageously, at least one of the lateral surfaces of the finger and the movable member facing each other are inclined with respect to the longitudinal axis in the closed configuration. More specifically, in the case shown here (see Figure 3), the finger 4 and the recess have flanks which are (see the location designated by the arrow 100) both inclined relative to the longitudinal axis of the body.

This mobile locking / unlocking member 5 further comprises a rear portion 5D to which the control rod 6 is attached.

Between the front and rear portions of this member 5 are provided 5E bearing surfaces on which elastically act the compression spring 7 which also bears against the bottom 9 of the body. Thus the movable locking / unlocking member is elastically biased outwardly of the body, and therefore against the rear portion of the bolt. The movable stop 10 has a U shape, with a bottom 10A and two branches 1BB intended to follow the inner surface of the body and the outer surface of the movable blocking / unlocking member and that of the bolt. The slices 1OC of the free ends of these branches constitute abutments against which the lugs 4A of the bolt are adapted to carry. The compression spring 8 is axially compressed between the bottom 9 of the body and the bottom 10A of this movable stop and resiliently urges this stop, and therefore the bolt, outwards,

In the body 2 are provided internal fixed stops, one of which is schematized in 2B in Figure 3.

Given their respective functions, the springs 7 and 8 have diameters, the first of which is greater than that of the second.

The control rod 6, which passes through the bottom of the body is of any suitable length. In the example under consideration, this rod is integral with the movable locking / unlocking member but may alternatively, not shown, be an independent rod of great length penetrating into the body until it is fixed, for example by screwing, into the rear portion of this movable member 5.

In particular, this rod 6 is here connected to a connecting rod 12 (see Figure 2) which is, at its other end, connected to a mechanism of any known type suitable, shown schematically as 13.

In the example considered here in which the lock of FIG. 1 is mounted at the upper part of a door leaf, this mechanism comprises, for example, a follower 14 which rotates a double lever 15, one of which, 15A, is connected to said connection rod 11, and the other of the arms, 15B, is connected to another connecting rod, terminating, in the lower part, to a lock of the same type as that of the figurel. It is understood that the connecting rods are driven in synchronism by the follower 14.

Figures 3 to 10 show various stages of the opening and opening of a lock of the type described with reference to Figure 1, mounted at the top of a door leaf, assuming that a lock of the same structure is mounted at the bottom of this wing, facing the ground. FIG. 3 represents a starting configuration in which the bolt 4 is in an angular configuration of closure, and in axial configuration with a maximum projection: the bolt penetrates into the opening of the striker 11 of the door jamb. The finger 4E enters the recess 5C of the movable member and the shoulder 5B and the recess 4D are in proximity to one another: the movable locking / unlocking member 5 is in a maximum advance configuration ( up) in the body. It will be understood that, in the mechanism 13, the double lever then has a substantially vertical orientation and that, in the bottom lock of the leaf, the locking / unlocking member is also in the configuration of maximum advance in the body, c that is to say down, while the bolt of this lower lock is engaged in a floor strike.

It may be noted that, in the angular and axial configuration of this FIG. 3, the lugs 4A are transverse to the ZZ axis while being held in this angular configuration by the proximity of the fixed abutments 2B and the movable stops of the branches 10A. The flat shape of the lugs thus contributes to the good angular retention of the bolt.

As it appears in FIG. 2, traction on the movable locking / unlocking member 5, for example by rotating the follower 14 and thus rotating the double lever, causes this moving member (and therefore also that of the lower lock) against the spring 7. This decline is facilitated, in the case of a loaded door, because of the slopes of the surfaces facing the bolt finger and the recess that make the forces applied to the door contribute to this decline by cam effect between these surfaces opposite. This decline is further facilitated by the fact that the backward stroke to obtain is low. This decline does not imply a simultaneous decline of the mobile stop 10.

The locks are then unlocked since the bolt of each lock is now free to switch, and a thrust on the leaf, in the direction of the arrow F2 causes the tilting of the bolt of each lock (see Figure 4) to the angular configuration opening (the bolt is then tilted upwards to the right). It follows that the finger pivots to come axially facing the mobile locking / unlocking member (see Figure 5). The rotation of the bolt is made possible by the retraction of the movable stop caused by the rotation of the flattened lugs.

If you continue to push the door leaf to the left, the left edge of the strike hole causes the cam to retract the bolt 4 (see Figure 6) until the bolt is sufficiently retracted into the body to be able to leave the hole of the striker and escape to it. This retraction of the bolt inside the body (more or less complete, depending on the clearance between the edge of the door leaf and the doorframe) is made possible by the fact that the spring 7 which acts on the movable member of blocking / unblocking can be compressed, and allow this body to back, under the thrust of the bolt finger on the shoulder of this body.

The total crossing of the striker then the surrounding portion of the door frame then allows the bolt to come again protruding (see Figure 7). However, it should be noted that, in this configuration, although the bolt has returned to its axial position of maximum projection (that of Figure 3), the angular position thereof (bolt finger bearing against the shoulder) prevents the movable locking / unlocking member from returning to its original configuration: it remains set back from its axial configuration of FIG. 3. An interest of this withdrawal (dimensioned by the depth of the recess and by the length of the finger) is that the double lever arm 15 of the mechanism 13 remains in the unlocking configuration, so that, in particular, in the bottom lock of the leaf, the bolt which continues to follow the surface of the ground does not It is not subject to undesired downward force (which would occur if the locking / unlocking device pushes), which may cause scratching of the floor.

If we reverse the movement imparted to the door leaf (arrow F3 in Figure 8), the coming of the right flank of the bolt against the left edge of the striker causes the tilting and retraction of the bolt in the body, while reversing the movable locking / unlocking member against the spring 7 to the maximum retraction configuration (see Figure 9, similar to that of Figure 6). Due to the return of the bolt in its angular closure configuration, the finger is found again axially facing the hollow, which allows the movable blocking / unlocking member to return to its blocking configuration (see Figure 10). It should be emphasized here that, as regards the bottom lock of the door leaf, where the bolt has remained substantially in its retraction configuration, the blocking takes place at the same time as that of the top lock: the two locks are effectively locked, without the bottom bolt had to control the configuration change blocking / unlocking devices.

Of course, the function controlled by the top lock, in synchronism, may not be the locking of a lower lock, but may be of any other nature, for example the locking of a side lock, or the unlocking of another mechanism.

Claims

1. A door lock comprising a body (2) elongated along a longitudinal axis (ZZ), provided at its free end before a headrest (3), a bolt (4) mounted in this body so as to be able to switch between a angular closing configuration and an angular opening configuration and being able to slide between an axial configuration of maximum projection and retraction configurations, and a mobile locking / unlocking member (5) connected to a control rod (6) and slidably mounted in this body behind this bolt being biased elastically (7) against the rear of the bolt, characterized in that the bolt comprises a rear portion having a recess (4D) and a finger (4E) adjacent thereto, such that, in the angular closure configuration, this recess is generally transverse to the longitudinal axis and the finger is substantially longitudinal, and in that the movable blocking / unlocking member (5) has a front portion com carrying a shoulder (5B) and a recess (5C) adjacent to this shoulder, such that, in the angular closure configuration, the finger is engaged in the recess and the shoulder and the recess are close to one another , while in angular opening configuration, the finger of the bolt bears longitudinally against the shoulder of the movable locking / unlocking member. 2. Lock according to claim 1, characterized in that the shoulder of the front portion of the movable blocking / unlocking member extends away from the hollow to the inner surface of the body. 3. Lock according to claim 1 or claim 2, characterized in that at least one sidewall laterally facing the finger and the shoulder is inclined, in angular closure configuration, a non-zero angle relative to to the longitudinal axis of the body so as to facilitate the escape of the finger from the hollow. 4. Lock according to any one of claims 1 to 3, characterized in that the bolt is pivotally mounted about a transverse axis defined by transverse lugs engaged axially between fixed stops (2B) relative to the body and stops mobile devices (10B) carried by a part axially movable (10) engaged in the body being biased elastically outwardly of the body. 5. Lock according to claim 4, characterized in that the lugs are flattened and oriented so as to be transverse in the angular configuration of closure. 6. Lock according to claim 4 or claim 5, characterized in that the movable stops resiliently urge the lugs against the fixed stops. 7. Lock according to any one of claims 4 to 6, characterized in that the movable stops are defined by the slices of the branches of a U-shaped piece (10) biased elastically outwardly of the body, these branches along the internal surface of the body and the outer surface of the movable locking / unlocking member and that of the bolt. 8. Lock according to claim 7, characterized in that the U-shaped part is biased by a spring compressed between the bottom of the body and the bottom of the U-shaped piece, this spring being disposed inside another compressed spring between a range of the movable locking / unlocking member and the bottom of the body. 9. Lock according to any one of claims 1 to 8, characterized in that the body is cylindrical. 10. A lock assembly comprising a lock according to any one of claims 1 to 9 and a mechanism comprising a follower (14) and a double lever arm (15), an arm is connected by a connecting rod (12) to the control rod (6) of the lock. 11. A lock assembly according to claim 10, characterized in that the lock is mounted in the upper part of a door leaf while the other arm is connected to another lock of the same structure, mounted at the bottom of this leaf.