FR2829520A1 - UNIVERSAL MOUNTING LOCK - Google Patents

Abstract

The lock comprises a case (101) with two parallel walls (102), a faceplate (110) perpendicular to the walls and a bolt (200) shaped to be supported on an internal face (112) of the faceplate by tipping against it. The bolt occupies one or other of two stable positions. A movable locking assembly (300,400) is acted on by a first spring (415) towards a bolt locking position. There is disabling sensor (800) which prevents the locking assembly from reaching the locking position.

Description

Claims 1 to 21.

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  The present invention relates to a lock.

  More specifically, the invention relates to a universal mounting lock, that is to say that can be mounted indifferently on a door to

  opening to the right or opening to the left.

  More specifically, the present invention provides a universal mounting lock in which the bolt does not generate excessive force when opening the door. Such a lock, thus allowing easy opening of the door on which it is installed, is particularly suitable for a

emergency door.

  The present invention more particularly relates to a door lock comprising: a box provided with two parallel walls; a headrest perpendicular to the parallel walls; a bolt shaped to be able to rest on an internal face of the headrest by tilting against it, the bolt then occupying one or the other of two predetermined stable positions; and a movable locking assembly, biased resiliently by a first spring, towards a locking position of the bolt, in which the bolt is locked in a said stable position and resting on the internal face of the headrest, characterized in that it comprises inhibition means adapted to prevent the movable locking assembly from reaching the locking position. According to a particular characteristic, the inhibition means comprise a feeler whose first end protrudes out of the headrest, resiliently biased by a second spring towards the outside of the lock, and able to be moved towards the inside of the lock. the lock up to a position

  in which the blocking assembly is inactive.

  When the door is open, the probe is pushed out of the lock by the second spring but the locking assembly

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  mobile is inoperative under the action of means of initiation. The bolt is then free to tilt and retract inside the lock. When closing the door, the bolt is first pushed, while tilting, inside the lock case, coming into contact with the outside of the trap. The door can therefore close. At the same time, the probe is pushed back inside the lock by making the locking assembly active. The bolt is then blocked

  protruding into the latch of the lock, and the door can not open.

  According to another particular feature, the movable locking assembly comprises a bolt tail cooperating with the bolt by a form connection, the form connection to define the two predetermined stable positions. The bolt tail slides between the two parallel walls

  in a direction perpendicular to the headrest.

  This form connection makes it possible to obtain a symmetrical mechanism, such that each of the stable positions corresponds to the use of the lock

  without a hand in a particular mounting configuration.

  According to another particular characteristic, the bolt comprises: a first bearing surface in a keeper; a second bearing surface in the striker, symmetrical to the first bearing surface with respect to a plane of symmetry of the bolt; two bearing surfaces forming a first double bevel; - A first abutment surface substantially parallel to the first bearing surface, extending the second bearing surface, and capable of bearing on a first aforementioned wall; a first shoulder in the extension of the first abutment surface, adapted to cooperate with one end of the bolt tail; - A second abutment surface substantially parallel to the second bearing surface, extending the first bearing surface, and capable of bearing on a second aforementioned wall; a second shoulder in the extension of the second abutment surface, the second shoulder being symmetrical to the first shoulder with respect to the plane of symmetry, and able to cooperate with the end of the bolt tail; and

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  a profiled cam, extending the two shoulders, symmetrical with respect to the plane of symmetry, and cooperating with two ramps of

said bolt tail.

  The two double bevel bearing surfaces of the bolt thus allow easy closing of the door by a simple pushing or pulling action. In addition, abutment surfaces substantially parallel to the bearing surfaces and adapted to bear against the walls of the lock housing, advantageously allow to minimize the force on the locking mechanism. The two shoulders also make it possible to ensure good contact with the end of the bolt tail, which ensures a minimum clearance at the locking position. Finally, the profiled cam allows, during the opening and closing of the door, to slide the bolt tail between the two walls of the housing. The bolt can therefore tilt in contact with the striker, and retract inside the

lock case.

  According to another particular feature, the lock comprises a link, the rod being on the one hand rotated by a first axis to a first element selected from the bolt and the bolt tail, and secondly linked, to the second element chosen from the bolt and the bolt tail, by an arrangement consisting of a second axis and an elongated cutout. The

  The width of the connecting rod corresponds to the spacing of the two parallel walls.

  This link mechanism advantageously makes it possible to reduce the

  width of the recess provided in the headrest for the passage of the rocking bolt.

  According to another particular characteristic, the movable locking assembly comprises a blocking element pivoting about an axis of rotation.

  perpendicular to said parallel walls.

  This rocking blocking element and the bolt tail constitute

  said mobile locking assembly of the bolt.

  According to another particular characteristic, the rocking blocking element comprises a roller capable of exerting a pussoe on the tail

  bolt, the thrust exerted on one side of said bolt tail.

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  According to another particular characteristic, the bolt tail is guided by two pins adapted to guide said bolt tail

  perpendicular to the headrest.

  Under the effect of this thrust, the bolt tail can, guided by the two pins, slide to the locking position, when this movement is not impeded by the inhibiting means. The push is

  caused by a first spring biasing the tilting blocking member.

  According to another particular characteristic, the locking position is ensured when the straight line defined on the one hand by the point of contact between the roller and the bolt tail, and on the other hand by the direction of movement of the bolt tail, substantially cuts the axis of rotation of the locking element. In this configuration in fact, the torque of the force generated by the bolt tail on the tilting element is zero or insufficient for

  cause tilting of the locking element.

  According to another particular characteristic, the inhibition means comprise a second rocking locking element whose first end is capable of interposing itself, in a position

  inhibition, between the bolt and the headrest.

  By interposing between the bolt and the headrest, the inhibiting means limit the movement of the bolt tail. The roll of the tilting element can not therefore be positioned in such a way that the straight line

  previously substantially cuts the axis of rotation of the locking element.

  The blocking assembly is thus inhibited.

  According to another particular characteristic, the lock comprises four pins fitted with force in two bores of the bolt, protruding on either side of said bolt, the two openings being parallel to

said headrest.

  These pins rest on the inner face of the headrest and

  allow the bolt to tilt against it.

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  According to another particular characteristic, the first end of the second locking element is adapted to interpose between a pin

aforementioned and the headrest.

  By thus interposing, the blocking element limits the movement of the bolt tail which is integral with the bolt and, as previously described,

  the blocking position can not be reached.

  According to another characteristic, the lock comprises a third spring, which tends to bring the second rocking locking element into the

inhibition position.

  Correlatively, the probe comprises a second end adapted to tilt the second rocking locking element, and to him

  to leave the position of inhibition.

  When the door is open, the probe is pushed out of the lock by the second spring and its end does not rock the second tilting blocking element. The tilting blocking member is then held in the inhibit position by the third spring, and the movable blocking assembly is inactive. On the other hand, when the door is closed, the end of the probe switches the second tilting blocking element which leaves the inhibition position. The blocking set is

then active.

  According to another particular characteristic, the lock comprises a lever, secured to a follower, adapted to disengage the locking element from the

blocking position.

  This lever can be actuated by a door handle with a rod is engaged in the follower. The door handle thus makes it possible to release the rocking blocking element from the blocking position and to release the movement of the bolt. A pressure or a pull on the door then entrane

  the bolt is pulled back into the lock box and the door can open.

  According to another characteristic, the first end of the probe

  is shaped like a second double biscau.

  Thus, when closing the door, the end of the probe in the form of a second double bevel meets the door frame and causes

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  the movement of the pallet inside the lock, which inUibe the blocking assembly. The second double bevel advantageously allows the assembly

  the lock on a door opening to the right or left.

  Other aspects and. advantages of the present invention

  will appear more clearly on reading the description of particular modes

  following description, this description being given solely for the purpose of

  non-limiting example and with reference to the accompanying drawings in which: - Figure 1 shows a partial view of the interior of a lock, the case being open; - Figure 2 shows, in exploded perspective, a bolt, a bolt tail and a link according to the invention; FIG. 3 represents inhibition means according to the invention; FIGS. 4a to 4d show a lock according to a cross-section IV-IV of FIG. 1, during various stages corresponding to the closing of a door equipped with a lock according to the invention; FIGS. 5a to 5c show a lock according to a cross section VV of FIG. 1, during the steps described respectively with reference to FIGS. 4a to 4d; FIGS. 6a to 6d show a lock according to the cross-section IV-IV of FIG. 1, during various stages corresponding to the opening of a door equipped with a lock according to the invention; and FIG. 7 is an exploded perspective view similar to that

  of Figure 2 for an alternative embodiment of the lock according to the invention.

  FIG. 1 represents a partial view of the inside of a lock 100. In this figure, the various elements of the lock 100 are represented

  in the positions they occupy when the door is open.

  This lock 100 comprises a box 101 provided with two parallel walls 102 and a headrest 110 perpendicular to the two parallel walls 102. The box 101 is shown open (without the feature) so that one of the

  two walls 102 is not visible in this figure.

  The lock 100 also comprises a bolt 200 which will be described

  later with reference to FIG.

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  The lock 100 comprises a movable locking assembly 300, 400

  consisting of a bolt shank 300 and a tilting blocking element 400.

  The width of the bolt shank 300 is such that the bolt shank 300 is adapted to neck in a translational movement between the two parallel walls 102 in a direction perpendicular to the headrest 110. The bolt shank 300 is guided in this translational movement by two

  pins 302, fixed perpendicularly to the walls 102.

  The tilting blocking element 400 comprises a first axis of

  rotation 410 fixed perpendicularly to a wall 102.

  The tilting blocking element 400 is elastically biased by a first spring 415, one end of which is fixed to the box 101, towards a locking position of the bolt 200. The blocking position will be described.

  later with reference to Figure 4d.

  The tilting blocking element 400 also comprises a roller 420 adapted to rotate about a second axis of rotation 422

perpendicular to the walls 102.

  The roller 420 is capable of pusing a face 310 of the bolt shank 300. Subject to this thrust, the bolt shank 300 can move in translation, guided by the two pins 302, as shown in FIG.

previously described.

  The lock 100 also includes a lever 500, integral with a follower 510. The lever 500 can thus be actuated by a door handle (not shown), a rod is engaged in the follower 510. The lever 500 is adapted, when the handle rotates, to press another roller 402, perpendicular to the walls 102, of the rocking blocking element 400, and to drive the tilting of the rocking blocking element 400, around

  its first axis of rotation 410, as described above.

  FIG. 2 represents a bolt 200, a bolt tail 300 and

  a small wheel 600 according to the invention.

  The bolt 200 comprises two bearing surfaces 204, symmetrical with respect to the plane of symmetry 202 of the bolt 200, and forming a first double

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  bevel 206. The bearing surfaces 204 are adapted to bear on the

  keeper 702 of the frame of a door 700 shown in Figure 4a.

  Each of the bearing surfaces 204 is extended by a curved surface and then by an abutment surface 208, parallel to the other bearing surface 204 and able to bear on a wall 102. Each abutment surface 208 is extended by a shoulder 210. The abutment surfaces 208 and the shoulders 210 are symmetrical by

  relative to the plane of symmetry 202 of the bolt 200.

  The shoulders 210 are extended by a profiled cam 212,

  also symmetrical with respect to the plane of symmetry 202 of the bolt 200.

  The bolt 200 has another plane of symmetry 214, orthogonal

to the plane of symmetry 202.

  The bolt 200 has a recess 220, on both sides of the

  plane of symmetry 214, defining two branches 222 of the bolt 200.

  The two branches 222 of the pene 200 are traversed by a hole

  224 whose diameter is contained in the first plane of symmetry 202.

  The bolt shank 300 has a plane of symmetry 304, parallel to the walls 102. It also has a rounded end 320, symmetrical with respect to the plane of symmetry 304 extended by two ramps

  330, also symmetrical with respect to the plane of symmetry 304.

  The bolt shank 300 comprises another plane of symmetry 308,

  orthoponal to the plane of symmetry 304.

  The tail 300 has a recess 340, on either side of the plane of symmetry 308. It thus forms, around the recess 340,

  a "U" shaped piece whose base is constituted by the face 310.

  The two branches 314 of the "U" thus defined are connected by a cylindrical axis 316, crossing perpendicularly the recess 340, a

  diameter of the cylindrical axis 316 being contained in the plane of symmetry 304.

  The link 600 comprises two parallel faces and two parallel sides, perpendicular to these two faces, and symmetrical with respect to a

  plane of symmetry 604 of the connecting rod 600.

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  Near one of its ends 601, the link 600 is traversed by a cylindrical hole 620, a diameter of this cylindrical hole 620 being contained in the plane of symmetry 604. The diameter of this hole 620 is

  substantially the size of the hole 224 of the bolt 200.

  The link 600 comprises an elongate cutout 610, symmetrical with respect to the plane of symmetry 604, and opening on an end opposite to the end 601. The bottom of this elongated cutout 610 is circular in shape, with a diameter substantially greater than the diameter. of the 316 axis of the

300 bolt tail.

  Similarly, the thickness of the rod 600, defined by the distance between the two faces of the rod 600, is substantially less than the height of the recess 340 between the two branches 314 of the bolt shank 300, and

  the height of the recess 220 between the two branches 222 of the bolt 200.

  The axis 316 of the bolt shank 300 can thus move in translation in the elongate cutout 610 of the link 600.

  symmetry 604 and 304 then being merged.

  The rod 600 is placed in the recess 220 of the bolt 200, so that the holes 620 and 224 are aligned. The holes 620 and 224 are then traversed by a cylindrical axis 630, adapted to keep the rod 600 in rotation relative to the bolt 200. This cylindrical axis 630 may for example be tightly mounted in the hole 224 of the bolt 200 and slidably mounted in the hole 620

of the link 600.

  The end 320 of the bolt shank 300 is able to slide along each of the shoulders 210 of the bolt 200. Likewise, the profiled cam 212 of the bolt 200 is adapted to slide along the two ramps 330 of the bolt shank. 300. This arrangement makes it possible to define a shape connection between the bolt and the bolt shank 300, which will be described later with reference to FIGS.

Figures 4a to 4d.

  The bolt 200 is crossed by two holes 230 parallel to the headrest, drilled symmetrically with respect to the plane of symmetry 202. These

  bores 230 are located between the hole 224 and the shoulders 210.

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  First two pins 232 are force-fitted into the bores 230 by an upper face of the bolt 200, parallel to the plane of symmetry 214, and protrude from this upper face. Similarly, two other pins 232 are force-fitted into the bores 230 by a lower face of the bolt 200, parallel to the plane of symmetry 214, and extend beyond this point.

lower side.

  These pins 232, are adapted to bear on one side

internal 112 of the headrest 110.

  The lock 100 comprises inlibition means 800, 900 shown in Figure 3. These inhibition means 800, 900 are constituted, inter alia of a probe 800, including a first end 810, in the form of second double biscau, protrudes out of the headrest 110, and a second

tilting blocking element 900.

  The second rocking blocking element 900 comprises an axis of rotation 910 and a first wedge end 920 adapted to be interposed, in a so-called muting position, between a pin 232 of the bolt and the headrest 110. The second element tilting block 900 is biased by a third spring 930 which tends to bring back the second element

  tilting block 900 in the inhibiting position.

  The pallet 800 is resiliently biased by a second spring 820 towards the outside of the lock 100. The probe 800 comprises a lug 812, parallel to the headrest 110, which bears on an inner face 112 of the headrest 110, for limit the protrusion of the probe 800 out of the headrest 110, when

  it is requested by the second spring 820.

  The probe 800, by pressing on its first end 810, is adapted to move, despite the force of the second spring 820, towards the inside of

  the lock 100, when closing the door.

  In a variant, the pins 332 are replaced by shoulders of the bolt, adapted to bear on the internal face 112 of the

headrest 100.

  When the probe 800 moves towards the inside of the lock, its second end 830 meets a second end 940 of the second rocking blocking element 900, which causes its rotation around the axis of rotation 910, and makes it leave the position of inhibition, as

represented in FIG.

  We will now describe the operation of the lock 100 during different stages corresponding to the closing of a door

  equipped with a lock 00, this description being fate with reference:

  FIGS. 4a to 4d, which schematically represent a seam re 100 following a transverse section IV-IV of FIG. 1; and FIGS. 5a to 5c which schematically represent a

  lock 100 in a cross-section V-V of Figure 1.

  Figures 4a and 5a show the lock 100 when the door

is open.

  With reference to FIG. 5a, when the door is open, the probe

  800 is pushed out of the lock 100 by the second spring 820.

  The second end 830 of the probe 800, does not act on the second element

tilting block 900.

  The second rocking blocking element 900 is therefore only stressed by the third spring 930 which tends to maintain the

  second rocking locking member 900 in the inhibiting position.

  In this inhibition position, the first end 920 of the second locking element 900 is interposed between the headrest 110 and a

pin 232 of the bolt 200.

  As a result, the bolt 200 is slightly retracted inside the casing 101, which hinders the translational movement of the bolt shank 300, subjected to the pusing of the roll 420 of the tilting blocking element 400 , The rocking blocking element 400 being urged by the first

spring 415.

  The movable locking assembly 300, 400 is therefore inoperative because the roll 420 does not reach the rear face 310 of the bolt shank 300.

  pene 200 can therefore pivot and retract inside the lock 100.

  FIGS. 4b and 5b show the lock 100 during closing of the door when a bearing surface 204 of the bolt 200 comes into

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  contact with the frame of the door 700. This has the effect of pivoting the bolt 200 from the position of Figure 4a to the position of Figure 4b, wherein the plane 202 of symmetry of the bolt 200 and the plane of symmetry 604 of the

link 600 are confused.

  By pivoting, the profiled cam 212, in contact with a ramp 330 of the bolt shank 300, causes the recoil in translation towards the inside of the

  lock 100, bolt shank 300, guided by the pins 302.

  At the same time, the probe 800 comes into contact with the frame 700 as shown in FIG. 5b. This causes the retraction and pivoting of the probe 800 inside the lock 100. The second end 830 of the probe 800 then comes into contact with the second end 940 of the

  second tilting blocking element 900.

  Continuing to close the door, and as shown in FIG. 5c, the first end 810 of the probe 800 continues to be repoussed by the door frame towards the inside of the lock 100. The second end 830 of the probe 800, supports then enough on the second end 940 of the second tilting blocking element 900, to do so

  swing around the axis of rotation 910.

  By tilting, the first wedge end 920 of the second locking member 900 leaves the inhibit position. She is not anymore

  capable of being interposed between the headrest 110 and a pin 232 of the bolt 200.

  Figure 4c shows the lock 100, after the second locking member 900 has left the inhibiting position. Since the position of Figure 4b, the bolt 200 has rotated, and one of its abutment surfaces 208 is in

support on a wall 102.

  The first spring 415 exerts a force on the first rocking blocking element 400, and tends to rotate it, about the first axis of rotation 410, to a position where the straight line connecting the axes of rotation 410 and

  422 is substantially parallel to the axis of symmetry 604 of the link 600.

  The roll 420 exerts a thrust on the rear face 310 of the bolt shank 100, which moves towards the headrest 110, in translation between the two parallel walls 102 and in a direction perpendicular to the

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  headrest 110. The bolt tail 300 is guided in this movement of

translation by the two pins 302.

  This translational movement of the bolt shank 300 is transmitted to the link 600 via the cylindrical axis 316, which presses against the bottom of the elongated cutout 610 of the link 600. This translational movement is to him transmitted to the bolt 200

  via the cylindrical axis 630 connecting the rod 600 and the bolt 200.

  The rounded end 320 of the bolt shank 200, then bears on a shoulder 210 of the bolt 200, which promotes the rotation of the bolt 200, to the position described above in which an abutment surface

208 is supported on a wall 102.

  Figure 4d shows the lock 100, after closing the door. The first wedge end 920 of the second locking member 900 having left the inhibiting position, as described with reference to FIG.

  5c, it does not interpose between the headrest 110 and a pin 232 of the bolt 200.

  The bolt 200 is thus pushed back by the locking assembly 300, 400, until a pin 232 bears on the inner face 112 of the headrest. The bolt 200 is pushed back into the latch 702 of the frame of the

door 700.

  The ribs of the various constituent elements of the lock 100 are such that, in this position, the line D defined firstly by the point of contact 312 between the roller 420 and the face 310 of the bolt shank 300, and other hand by the direction of movement of the bolt tail 300, cut

  substantially the first axis of rotation 410 of the rocking element 400.

  The position of the tilting blocking element 400 thus defines a locking position of the bolt 200. Indeed, in this position, a thrust of the bolt shank 300 on the tilting blocking element 400, generates a zero torque. It is therefore not possible to rotate the bolt 200, since this would have the effect, by the form connection described above, to generate a

poussoe on the bolt tail 300.

  The lock is thus locked, the door being in a closed position.

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  The only way to unlock the lock, is to clear the element

  tilting lock 400 from the locking position.

  This can be done through a handle, not shown here. This handle has an axis pressed into the follower 510. By turning, it actuates the lever 50O, integral with the follower 510. The lever 500 in this case presses the roller 402 of the tilting blocking element 400, and drives its tilting, around its first axis of rotation 410. The tilting is sufficient so that the straight line D defined above no longer cuts the first axis of rotation 410 of the element

tilting 400.

  In this unlocked position, a possible thrust of the bolt shank 300 on the tilting blocking element 40O, generates a sufficient torque on the tilting blocking element 40O, to tilt it. The bolt tail is thus released from its constraint. The bolt 200 can then pivot and retract. This is what happens when the door is opened, when a bearing surface 204 of the bolt 200 comes into contact with the surface of the door

702 of the door frame.

  The different stages of the opening of the door will now be described with reference in part to FIGS. 6a to 6d, and secondly to FIGS.

Figures 5a to 5c already described.

  Figures 6a and 5c show the lock 100 when the door is closed. The positions of the parts of the lock 100 shown in Figure 6a are identical to their positions in Figure 4d corresponding to the end of the

closing cycle.

  When you open the door, the bolt 200 starts to turn

  inside the latch 702 of the frame 700 as shown in FIG. 6b.

  Simultaneously, the first end 810 of the probe 800 rubs on the frame 700. When the opening of the door continues, the first end 810 of the probe 80O, loses contact with the frame 70O, as shown in Figure 5b. The probe 800 is then pushed out of the lock 100

by the second spring 820.

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  The second end 830 of the probe 800 then no longer biases the second end 940 of the second tilting blocking element 900, which

  under the action of the third spring 930 returns to the position of inhibition.

  This return to the inhibiting position of the second tilting blocking element 900 takes place between the steps represented respectively on

Figures 6b and 6c.

  When we continue to open the door and the bolt 200, having continued to rotate, reaches the position shown in Figure 6c, the first end 920 of the second tilting blocking element 900 is already

  repositionnce in the inhibition position along the headrest 110.

  Thus, and as previously described, when the double bevel 206 of the bolt 200 loses contact with the frame 700, the blocking assembly

  mobile (300, 400) can not take the locking position of the bolt 200.

  Figure 6d shows the open door. It is identical to the

  Figure 6a and will not be described.

  FIG. 7 represents a variant embodiment of the lock

according to the invention.

  As a preliminary, it will be noted that the elements id which are identical or similar to those of the embodiment previously described, will be, as far as possible, referenced by the same reference signs and will not be

not described each time.

  The bolt 200a of this variant of renlisation differs from the bolt 200 previously described with reference to Figure 2 in that it does not include

pin 232.

  The link 600a of this variant embodiment differs from the link 600 previously described with reference to FIG.

  comprises two pins 232a, symmetrical with respect to the plane of symmetry 604.

  Each of these two nipples 232a is adapted to move in a light

  103a made in each of the side walls 102 of the lock 100.

  The bolt shank 300a of this embodiment differs from the bolt shank 300 previously described with reference to FIG. 2 in that the thickness of its branches 314, and in particular the thickness of its branch

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* lower 314a has been increased, so that this lower branch 314a is thicker than the thickness of the lower branch 222a of the

bolt 200a.

  On the other hand, still in this same variant, the second locking element 900 has been moved back inside the lock 100 with respect to the position it occupied in the embodiment previously described, so that, in the inhibiting position, its first end forming wedge 920 takes position in front of the rounded end 320 of the branch

  lower 314a of the bolt shank 300a.

  Thus, when the door is opened, the position of inhibition, obtained in the mode of renlisation described above, by the interposition of the first end 920 of the second locking element 900 between a pin 232 and the inner face 112 of the headrest 110, is now obtained by the position of the first end 920 in front of the rounded shape of the branch

  lower 314a of the bolt shank 300a.

  In this position, in fact, the first end 920 of the second locking element 900 impedes the translational movement of the bolt shank 300a, which makes the movable locking assembly 300a inoperative. When closing the door, and as described above, the action of the second end 830 of the probe 800 on the second end 940 of the second rocking locking element 900 tilts the second

  tilting blocking element which leaves its inhibiting position.

  The roller 420 then exerts a thrust on the rear face 310 of the bolt shank 300 which moves towards the headrest 110 and

  entrain the rod 600a and the bolt 200a.

  In the previously described embodiment, the bolt 200 was pushed back by the locking assembly 300, 400 until a pin

  232 comes to bear on the inner face 112 of the headrest 110.

  In this variant, the bolt 200a is pushed back by the locking assembly 300a, 400, until the studs 332a of the link

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  600a bear on the ends 104a of the lights 103a of the walls

1 02a.

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Claims (17)

  Door lock (100) comprising: - a box (101) provided with two parallel walls (102); a headrest (1 10) perpendicular to said parallel walls (1 02);   a bolt (200) shaped so as to be able to bear on an inner face (112) of said headrest (110) by tilting against it, said bolt (200) then occupying one or the other of two predetermined stable positions; ; and a movable blocking assembly (300, 400) elastically biased by a first spring (415) towards a locking position of said bolt (200), in which said bolt (200) is locked in a stable position mentioned above and in bearing on said inner face (112) of the headrest (110), characterized in that it comprises muting means (800, 900) adapted to prevent said movable locking assembly (300, 400)   to reach said blocking position.   2. Lock (100) according to claim 1, characterized in that theUnits inhibition means (800, 900) comprise a probe (800) having a first end (810) protrudes out of said headrest (110), solicited from elastically by a second spring (820) towards the outside of said lock (100), and able to be moved towards the inside of said lock (100) to a position   wherein said movable locking assembly (300, 400) is inactive.   3. Lock (100) according to claim 1 or 2, characterized in that said movable locking assembly (300, 400) comprises a bolt shank (300) cooperating with said bolt (200) by a form connection, said connection of shape to define said two predetermined stable positions and said bolt tail (300) sliding between said two parallel walls   (102) in a direction perpendicular to the headrest.   4. Lock (100) according to claim 3, characterized in that it comprises two pins (302) adapted to guide said bolt tail (300) according to said direction. 19 2829520   5. Lock (100) according to claim 3 or 4, characterized in that said bolt (200) comprises: a first bearing surface (204) in a striker (702); a second bearing surface (204) in said striker (702) symmetrical to the first bearing surface (204) relative to a plane of symmetry (202) of said bolt (200), the two bearing surfaces ( 204) forming a first double bevel (206); a first abutment surface (208) substantially parallel to said first bearing surface (204), extending said second bearing surface (204), and capable of bearing on a first wall (102)., prectee; a first épauiement (210) in the extension of said first abutment surface (208), adapted to cooperate with an end (320) of said bolt tail (300); a second abutment surface (208) substantially parallel to said second bearing surface (204), extending said first bearing surface (204) and capable of bearing on a second wall (102) mentioned above; a second shoulder (210) in the extension of said second abutment surface (208), said second shoulder (210) being symmetrical to said first shoulder (210) relative to said plane of symmetry (202), and able to cooperate with said end (320) of said bolt tail (300); and - a profiled cam (212), extending the two shoulders (210), symmetrical with respect to said plane of symmetry (202), and cooperating with   two ramps (330) of said bolt tail (300).   6. Lock (100) according to any one of claims 3 to 5,   characterized in that it comprises a link (600), said link (600) being on the one hand rotated by a first axis (630) to a first element selected from said bolt (200) and said bolt tail (300), and, secondly, connected to the second element selected from said bolt (200) and said bolt tail 2829520   (300), by an arrangement consisting of a second axis (316) and a cutout elongated (610).   Lock (100) according to any one of claims 1 to 6,   characterized in that led it movable locking assembly (300, 400) comprises a locking element (400) tilting about an axis of rotation (410).   perpendicular to said parallel walls (102).   8. Lock (100) according to claim 7, characterized in that said rocking locking member (400) comprises a roller (420) capable of exerting a thrust on said bolt tail (300), said thrust   acting on a face (310) of said bolt tail (300).   9. Lock (100) according to claim 8 characterized in that said locking position is assured when the line (D) defined, firstly by the point of contact between said roller (420) and said bolt tail (300 ), and secondly by said direction of movement of said bolt tail   (300) substantially intersects said axis of rotation (410).   Lock (100) according to any one of claims 1 to   9, characterized in that said inhibiting means (800, 900) comprise a second rocking locking element (900), a first end (920) of which can interpose, in an inhibition position, between said   bolt (200) and said headrest (110).   Lock (100) according to any one of claims 1 to   , characterized in that said bolt (200) comprises: two bores (230) parallel to said headrest (110) and symmetrical with respect to said plane of symmetry (202); - Two pins (232) force-fitted by an upper face of said bolt (200) in the two parallel openings (230), and protruding from said upper face of said bolt (200); and two pins fitted (232) by a lower face of said bolt (200) into the two parallel bores (230), and protruding from   said lower face of said bolt (200).   Lock (100) according to claims 10 and 11, characterized   in that said first end (920) of the second locking element 2 1 2829520   (900) is adapted to interpose between a pin (232) above and said headrest (1 10).   13. Lock (100) according to any one of claims 10 to   12, characterized in that it comprises a third spring (930), which tends to return said second rocking locking element (900) in said inhibition position.   Lock (100) according to any one of claims 10 to   13, characterized in that said probe (800) has a second end (830), adapted to tilt said second blocking element   tilting (900), and to make it leave said inhibition position.   Lock (100) according to any one of claims 7 to   14, characterized in that it comprises a lever (500) adapted to disengage said   locking member (400) of said locking position.   16. Lock (100) according to claim 15, characterized in that   said lever (500) is integral with a follower (510).   Lock (100) according to any one of claims 2 to   16, characterized in that said first end (810) of the probe (800) is