EP2845971A1 - Adjustable mortise lock - Google Patents

Abstract

The invention relates to an adjustable mortise lock (10) comprising on the one hand a headrest (12) and a chest (18) containing an adjustable bolt (22, 26) and an actuating mechanism (32) for actuating said bolt adjustable (22, 26) through said headrest (12), and secondly mechanical guiding members (20) installed between said trunk (18) and said headrest (12) to be able to guide said trunk in translation between a position close to said headrest (12) and a position spaced from said headrest (12) and to maintain said trunk (18) substantially parallel to said headrest when said trunk is driven in translation. Said mechanical guide members comprise a sheath (20) integral with said headrest (12), said sheath having an open edge (19) located opposite said headrest for slidingly receiving said trunk (18) forming a drawer.

Description

The present invention relates to a mortise lock, or larder, for which the trunk, or the housing, is fully engaged in the thickness of a door leaf through the edge of the leaf.

This type of lock is well known and it can hide the lock mechanism. To do this, a housing is formed in the thickness of the door leaf through its edge, so as to insert the trunk of the lock, while openings opening into said housing are formed on the sides of the door so as to to be able to engage the operating elements of the lock. In addition, a headrest is applied and fixed against the edge so as to close the said housing in particular. The headrest has lights for passing the bolts of the lock, which extend from the chest.

For each type of door, depending on the possibilities of realization of the housing adapted to receive the housing, it is necessary to provide a type of lock. In addition, when an installed lock must be replaced, it is necessary to find the same type of lock, in particular to adjust the position of the housing relative to the aforementioned orifices formed in the door leaf.

Also, it has been imagined to be able to adjust the position of the housing in its housing relative to the headrest which it remains applied against the field of the wing. We can refer in particular to the document DE338464 , which describes a pair of screws installed between said chest and said headrest to be able to drive said chest in translation relative to said headrest in a direction substantially perpendicular to said headrest and to maintain said chest substantially parallel thereto. The screws are spaced from each other and their heads are trapped in the headrest. The rods of the screws respectively join the corners of the housing and are engaged in a tapping. In this way, when the screws are driven simultaneously in rotation through their head, the position of the chest is adjusted relative to the headrest, and hence the orifices by which the operating members are engaged.

It is however difficult to control the parallelism of the trunk and the headrest during this adjustment. However, this is essential for the bolts to cross the headrest in a perpendicular direction. In addition, the connection between the headrest and the trunk is relatively fragile.

Also, a problem that arises and that aims to solve the present invention is to provide a mortise lock that not only allows to maintain the parallelism between the chest and the headrest despite the movements of the trunk, but also, which is more resistant, including burglary.

For this purpose, the present invention provides an adjustable mortise lock comprising on the one hand a headrest and a chest containing an adjustable bolt and an actuating mechanism for actuating said bolt through said headrest, and on the other hand mechanical members guide members installed between said trunk and said headrest to be able to guide said trunk in translation between a position close to said headrest and a position spaced from said headrest and to maintain said trunk substantially parallel to said headrest when said trunk is driven in translation. Said mechanical guide members comprise a sheath integral with said headrest, said sheath having an open edge located opposite said headrest for slidingly receiving said trunk forming a drawer.

Thus, a feature of the invention lies in the implementation of an open sleeve in its rear edge opposite the headrest and inside which is housed the trunk, the latter being adapted to be driven in. translation inside the sheath. When the trunk is in a position close to the headrest, its own rear edge substantially coincides with the open edge of the sheath. However, when the trunk is in a position away from the headrest, its rear edge extends outside the sleeve, while it is itself engaged partially inside the sheath. In this way, the outer wall of the trunk cooperating from its shape with the inner wall of the sheath, the trunk is then perfectly guided in translation inside the sheath in a direction perpendicular to the headrest. Also, the cross section of the outer wall of the trunk is substantially equal to the cross section of the inner wall of the sheath near the functional play.

According to a particularly advantageous embodiment of the invention, said sleeve has locking members for holding said box in a fixed position inside said sleeve. Thus, the sheath and the trunk form a rigid assembly and hence resistant to burglary.

Advantageously, said sheath has a lower edge and an opposite upper edge, and said locking members are mounted in the lower and upper edges. In this way, we just block the chest relative to the sheath in two opposite ends of each other, which allows a better hold in a fixed position. And therefore the rigidity of the assembly formed by the sleeve and the trunk is increased. Preferably, said locking members comprise needle screws. The lower and / or upper edges have a tapping and the needle screws are screwed through the threads to be able to come into force support in the outer wall of the box and thus lock in translation inside the sleeve.

In addition, said adjustable bolt advantageously has a bolt tail in two parts slidably mounted relative to each other. In this way, the position of the bolt relative to the trunk is easily adjustable after the position of the trunk has been adjusted relative to the sheath. Preferably, said adjustable bolt further comprises a clamping screw for holding said parts in a fixed position relative to each other. Also, the two parts are mounted for example sliding in one another, one has a thread, while the other a light through which is threaded the clamping screw. We then maintain in fixed position the two parts relative to each other by squeezing them against each other.

In addition, said sheath advantageously has a lateral light to be able to adjust the position of said bolt relative to said trunk. The clamping screw is for example accessible through the wall of the sleeve so as to adjust the position of the bolt relative to the trunk while the latter is held in a fixed position relative to the sheath.

Furthermore, the adjustable mortise lock comprises control members of said actuating mechanism adapted to extend laterally projecting from said chest, while said sleeve has two lateral notches opening into said open edge to receive said control organs. Thus, when the trunk is in a position close to said headrest, the control members extend across the notches.

• la Figure 1 est une vue schématique en perspective de la serrure à mortaiser réglable selon l'invention et dans un premier état ;
• la Figure 2 est une vue schématique de côté de la serrure à mortaiser réglable illustrée sur la Figure 1 temps un second état ; et,
• la Figure 3 est une vue schématique de côté montrant les éléments internes de la serrure illustrée sur les Figures 1 et 2.

Other features and advantages of the invention will emerge on reading the following description of a particular embodiment of the invention, given by way of indication but not limitation, with reference to the accompanying drawings in which:

• the Figure 1 is a schematic perspective view of the mortise lock adjustable according to the invention and in a first state;
• the Figure 2 is a schematic side view of the adjustable mortise lock illustrated on the Figure 1 time a second state; and,
• the Figure 3 is a schematic side view showing the internal elements of the lock illustrated on the Figures 1 and 2 .

The Figure 1 illustrates an adjustable mortise lock 10 according to the invention comprising, a headrest 12 viewed from three quarters front and having a front face 14 and an opposite rear face 16, and back, a chest 18 housed partially inside of a sheath 20. The sheath 20 is integral with the headrest 12, and it is formed of a tubular element whose axis A extends precisely perpendicular to the headrest 12. The sheath 20 thus has a first open rear edge 19, while on the opposite, its first front edge is closed by the headrest 12. The headrest 12 is intended to be fixed on the edge of a door leaf not shown, while the trunk 18 and the sleeve 20 come to lodge inside a housing practiced in the thickness of the door leaf. In addition, a latch bolt 22 extends through a first oblong slot 24 and a latch bolt 26 extends through a second oblong slot 28. As shown, the box 18 extends into a position away from the headrest 12.

We will refer to the Figure 3 in cutaway, on which the sides of the trunk 18 and the sheath 20 have been removed in order to more clearly describe an actuating mechanism 32 housed inside the trunk 18, which is here housed inside the sheath 20 in a close position of the headrest 12.

The sheath 20 has an upper edge 34 opposite a lower edge 36. It is connected to the headrest 12, bearing against the rear face 16 by means of two brackets 38, 40 located inside the sleeve 20 and respectively integral, on the one hand the upper edges 34 and lower 36 and on the other hand the headrest 12. The sleeve 20 is thus perfectly integral with the headrest 12.

Also found in this Figure, the latch bolt 22 projecting from the headrest 12 and the locking bolt 26 retracted inside the trunk 18. The trunk 18 has a rear trunk edge 41 and two opposite edges, connected at the rear trunk edge 41: an upper trunk edge 43 and a lower trunk edge 45.

The actuating mechanism 32 comprises a follower 42 provided with a finger 44 cooperating with a latch bolt tail 46. In addition, the angular position of the follower 42 relative to the finger 44 is adjustable by means of a Adjusting screw 47. In this way, when mounting the lock, it is adjusted the final position of the follower depending on the angle that is desired to give the control members relative to the horizontal. The latch bolt tail 46 is connected to the latch bolt 22 in its extension and comprises two parts, a rear portion 48 slidably mounted in a front portion 50. The front portion is provided with a first clamping screw 52 to clamp the front portion 50 against the rear portion 48 and hold them in a fixed position relative to each other.

The actuating mechanism 32 further comprises, between the follower 42 and the lower trunk edge 45, a lock cylinder 54 provided with a key 55, European cylinder type and having an oblong cross section. The lock cylinder 54 is intended to cooperate with a locking bolt tail 56 which extends in the extension of the locking bolt 26. The locking bolt 26 is connected to the locking bolt tail 56 via a locking bolt. a slide link. They are held in a fixed position relative to each other by means of two second clamping screws 58.

In addition, the trunk 18 is held in a fixed position by means of an upper set screw 60 and a lower set screw 62. The upper set screw 60 passes through the upper edge 34 of the sheath 20 and the upper trunk edge 43, while the lower needle screw 62 passes through the lower edge 36 of the sleeve 20 and the lower trunk edge 45. Also, the edge upper 34 and the lower edge 36 of the sleeve 20 each have a thread 64.

In the absence of blocking, the trunk 18 is, to a certain extent, movable in translation inside the sleeve 20 so as to be adjustable relative to the headrest 12. To do this, the upper needle screw 60 and lower 62 are respectively pre-screwed inside the threads 64, without however extending respectively projecting from the inner wall of the upper edges 34 and lower 36 of the sleeve.

We will refer to the Figure 2 illustrating the mortise lock 10, no longer cut, and in a position where the chest 18, housed inside the sleeve 20, is close to the headrest 12, as it is shown on the Figure 3 .

The needle screws 60, 62, not visible in the Figure, are screwed through the upper edges 34 and lower 36 and pass through the upper trunk edge 43 and the lower trunk edge 45. The trunk 18 is thus held in a fixed position to the inside of the sheath 20.

The sleeve 20 has on its side a first lateral light 66 situated at the level of the latch bolt tail 46 so as to be able to access the first clamping screw 52 and thus be able to adjust the position of the latch bolt 22 relative to on the headrest 12.

In the same way, facing the locking bolt 26 and the locking bolt tail 56, the sleeve 20 has two second lateral lights 68, 70 allowing access to the two second clamping screws 58. In this way, it adjusts the position of the locking bolt 26 with respect to the headrest 12.

In addition, the sheath 20 has two pairs of notches, a pair of facing upper notches 72, 74, and a pair of facing lower notches 76, 78, opening into the open rear edge 19. The notches of each pairs are formed in the two opposite sides of the sheath 20, so as to allow the passage, with respect to the lower notch pair 76, 78, of the lock cylinder 54, and with respect to the pair of upper notches 72, 74, of the control handle of the follower 42.

Thus, depending on the possibilities of realization of the housing formed in the thickness of the door leaf through its edge, and the relative position of the orifices opening into said housing and on the sides of the leaf, relative to the edge of the door, the position of the trunk 18 forming a drawer is adjusted inside the sleeve 20 in order to carry the follower and the lock cylinder 54 at the corresponding distance. Then, the trunk 18 is immobilized with respect to the sheath 20 by screwing the set screws 60, 62. Then, through the first lateral light 66 and the second lateral lights 68, 70 of the side of the sheath 20, the relative position of the bolt is adjusted. turn 22 and locking bolt 26 relative to the headrest 12.

Claims (8)

An adjustable mortise lock (10) comprising on the one hand a headrest (12) and a chest (18) containing an adjustable bolt (22, 26) and an actuating mechanism (32) for actuating said adjustable bolt (22, 26). ) through said headrest (12), and secondly mechanical guiding members (20) installed between said trunk (18) and said headrest (12) so as to guide said trunk in translation between a position close to said headrest ( 12) and a position spaced from said headrest (12) and to maintain said trunk (18) substantially parallel to said headrest when said trunk is driven in translation;
characterized in that said mechanical guiding members comprise a sheath (20) integral with said headrest (12), said sheath having an open edge (19) situated opposite said headrest for slidingly receiving said trunk (18) in forming drawer. Adjustable mortise lock according to claim 1, characterized in that said sleeve (20) has locking members (60, 62) for holding said box (18) in a fixed position inside said sleeve (20). Adjustable mortise lock according to claim 2, characterized in that said sleeve (20) has a lower edge (36) and an opposite upper edge (34), and that said locking members (60, 62) are mounted in the lower and upper edges. Adjustable mortise lock according to claim 2 or 3, characterized in that said locking members (60, 62) comprise needle screws. An adjustable mortise lock as claimed in any one of claims 1 to 4, characterized in that said adjustable bolt (22) has a two-piece bolt shank (46) slidably mounted relative to each other. the other. Adjustable mortise lock according to claim 5, characterized in that said adjustable bolt (22) further comprises a clamping screw (52) for holding said parts (48, 50) in a fixed position relative to each other . Adjustable mortise lock according to any one of claims 1 to 6, characterized in that said sleeve (20) has a side slot (66) to be able to adjust the position of said bolt (22) relative to said box (18). Adjustable mortise lock according to any one of claims 1 to 7, characterized in that it comprises control members of said actuating mechanism adapted to extend laterally projecting from said trunk (18), whereas said sheath (20) has two lateral notches (72, 74, 76, 78) opening into said open edge (19) for receiving said control members.

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