Locking hardware control device

Abstract

Title: Control device for locking fittings The invention relates to a control device 1 for locking fittings of the lock, espagnolette or similar type for joinery, such as a door or window 2, comprising a base 7 on which a handle 10 is mounted pivotally about an axis 9 perpendicular to said base 7 and acting between a locking position 22 and at least one unlocking position 23 on an input shaft 13 for driving, by means of a reduction transmission mechanism 30, an output shaft 25 with an axis 26 parallel to the axis 9 of the input shaft 13, characterized in that the multiplication transmission mechanism 30 is of the cam type and with variable multiplication between the locking position 22 and the unlocking position 23. Figure for the abstract: [Fig. 2]

Description

Title of the invention: Locking fitting control device

[0001] The present invention relates to a device for controlling a locking fitting of the lock, cremone bolt or similar type for joinery, such as a door or window, comprising a base on which a handle is mounted pivotally about an axis perpendicular to said base and acting on an input shaft for driving, by means of a gear reduction transmission mechanism, an output shaft with an axis parallel to the input shaft.

[0002] The invention relates to the field of building hardware and relates more particularly to a control device through which a user can act on a locking fitting, whether it is a lock, a espagnolette, a espagnolette lock or the like equipping a joinery, such as a door or window.

[0003] Usually, a joinery, such as a door or a window, comprises at least one leaf mounted hinged or sliding on a fixed frame. This leaf or this fixed frame is equipped, at the level of at least one of its crosspieces or its uprights, with a locking fitting comprising at least one locking member which, in the locked position, cooperates with a striker with which the fixed frame or the leaf is provided, respectively, so as to keep the latter closed on said fixed frame.

[0004] A user acts on such a locking fitting by means of a control device in the form of a handle mounted in rotation on a base intended to be surface-mounted on, as the case may be, the leaf or the fixed frame of this joinery. Most frequently, the handle makes it possible to act on this locking fitting by means of an output shaft on which it acts directly and which constitutes its axial extension through the base on which this handle is mounted in rotation. Usually, this output shaft is called an operating square.

[0005] Due to such a configuration, the rotation angle communicated to the handle by the user strictly determines the angular amplitude of the displacement of the output shaft. In this regard, this angular displacement to be communicated to this output shaft (or operating square) for a locking or unlocking command of the locking fitting is usually at least 90°.

[0006] Under certain conditions, in particular to facilitate the handling of a leaf, it may prove useful for this 90° rotation of the output shaft to result from a smaller angle rotation control of the handle. In particular, it is quite common that in the locking position of a sliding leaf the handle extends vertically along the front upright of this leaf. This same handle is used by the user to control, by traction, the opening of this sliding leaf. To facilitate this maneuver, it is preferable that this handle, after unlocking command, remains in a strongly inclined position, close to vertical. Indeed, in the horizontal position, the user must firmly grip the handle so that it is possible to transmit to it the traction force necessary to move the sliding leaf.

[0007] For this purpose, locking fitting control devices have been designed, the handle of which acts on an input shaft driving the output shaft via a gear reduction transmission mechanism.

[0008] In particular, document FR 2 865 493 B1 discloses a control device comprising a handle acting on an input shaft which controls rotation about its pivot axis of a cam extending in a perpendicular plane and carrying in its end portion opposite this pivot axis a portion of semi-circular teeth engaged with a toothed crown mounted on the output shaft. Given that the distance separating this semi-circular toothing from the pivot axis of the cam, therefore from the handle, is greater than the radius of the crown on which this semi-circular toothing engages, the angular displacement controlled by the handle generates an amplified angular displacement of the output shaft.

[0009] The principle implemented by the device described in document EP 0 763 641 B1 is similar, except that instead of a portion of semi-circular teeth, the handle acts on a crown whose section is larger in comparison to that mounted on the output shaft.

[0010] First of all, such gear-type multiplication transmission mechanisms, although efficient, often prove to be bulky and of complex design, requiring compliance with strict tolerances and presenting a risk of jamming in the event of wear and excessive play.

[0011] It was in the context of a first inventive step that the applicant became aware that by substituting drive parts of larger section in comparison with gear teeth which are necessarily of reduced size, it is possible to gain in longevity. Furthermore, such a gear drive can be the cause of assembly errors, for example due to an offset between the teeth of these gears.

[0012] Furthermore, thanks to drive parts cooperating in the manner of a cam, the transmission ratio between the rotation of the handle and that of the output shaft is capable of being variable and adapted to the constraints of engagement and / or de- engagement of locking members with respect to a strike plate.

[0013] To this end, the invention relates to a device for controlling a locking fitting of the lock, espagnolette or similar type for joinery, such as a door or window, comprising a base on which a handle is mounted pivotally about an axis perpendicular to said base and acting on an input shaft for driving, by means of a gear reduction transmission mechanism, an output shaft with an axis parallel to the input shaft. Advantageously, this gear reduction transmission mechanism is of the cam type and with variable gear reduction between the locked position and the unlocked position.

[0014] According to the invention, the reduction transmission mechanism comprises a drive finger equipping a first end of a transmission arm made integral in rotation at its opposite end of the input shaft, the drive finger cooperating with a cam track equipping the output shaft for the rotation control of the latter under the impulse of the rotation of the handle

[0015] According to an inverted design, the reduction transmission mechanism comprises a cam track equipping a first end of a transmission arm made integral in rotation at its opposite end of the input shaft, this cam track cooperating with a drive finger equipping the output shaft for the rotation control of the latter under the rotation impulse of the handle.

[0016] Other aims and advantages of the present invention will emerge on reading the detailed description below, this description being supplemented by the appended figures given for illustrative and non-limiting purposes, among which:

[0017] [Fig-1] [Fig.l] is a schematic representation of a type of carpentry sliding sash window capable of being equipped with a control device according to the invention;

[0018] [Fig.2] [Fig.2] is a schematic, perspective and exploded view of the control device according to the invention;

[0019] [Fig.3] [Fig.3] is a schematic view in longitudinal section of this control device;

[0020] [Fig.4] [Fig.4] is a schematic and sectional view along IV - IV of [Fig.3];

[0021] [Fig.5] [Fig.5] is a schematic and sectional view along V - V of [Fig.3];

[0022] [Fig.6] [Fig.6] is a schematic and sectional view along VI - VI of [Fig.3];

[0023] [Fig.7] [Fig.7] is a top view of the control device the hood re base cover and handle having been removed, the multiplication transmission mechanism being illustrated in a first locking position, depending on the unlocking case;

[0024] [Fig.8] [Fig.8] is a view identical to [Fig.7], the control arm having been removed, only the cooperation between the drive finger and the cam track being visible. in this first locking position depending on the unlocking case;

[0025] [Fig.9] [Fig.9] is a view similar to [Fig.7], the multiplication transmission mechanism being shown in a second unlocking position depending on the locking case;

[0026] [Fig. 10] [Fig. 10] is a view identical to [Fig.8], illustrating the cooperation between the drive finger and the cam track in this second unlocking position depending on the locking case.

[0027] As shown in Figures 1 to 10 of the attached drawings, the present invention relates to a control device 1 for locking fittings of the lock, espagnolette, espagnolette lock or similar type equipping a joinery, such as a door or a window 2.

[0028] In [Fig.l] a window 2 is schematically shown comprising at least one leaf 3 mounted to slide on a fixed frame 4. In this [Fig.l], this leaf 3 is shown partially open while preserving a passage between its front jamb 5 and the front jamb 6 corresponding to the fixed frame 4 on which it can close. The locking fitting equips, for example in the rebate, this sliding leaf 3 at the height of this front jamb 5 on which is attached, surface-mounted, a control device 1, in accordance with the invention. This allows a user to act on the locking fitting to, depending on the case, lock or unlock the sliding leaf 3, but also to push it back into the closed position or, on the contrary, into the open position.

[0029] For this purpose, this control device 1 comprises a base 7 fixed, in the example corresponding to [Fig.l], on the inside of the front upright 5 of the leaf 3. In particular, this base 7 advantageously comprises two holes 8 for the passage of fixing screws located at a standardized distance from each other. Usually, but not necessarily according to the invention, these holes 8 are located in the same alignment and equidistant from the axis of the output shaft through which the control device 1 acts on the locking fitting as will be described further on.

[0030] On this base 7 and along an axis 9 perpendicular to the latter is pivotally mounted a handle 10. Concretely, the handle 10 usually comprises a bar 11 which the user can grasp to act on the control device 1. It also comprises a neck 12 extending under this bar 11, often at one of the ends of the latter. It is through this neck 12 that the handle 10 is mounted on the base 7, depending on the case, directly or indirectly, the most frequent solution and shown in the figures.

[0031] In particular, this handle 10 is mounted in rotation on the base 7 by means of an input shaft 13. This comprises, at a first end 14, a bore 15 at through which it fits freely in rotation on a tenon 16 of adjusted section extending perpendicularly from the bottom 17 of the base 7. Fixing means 16a can axially block the input shaft 13 on this tenon 16.

[0032] On the opposite end 18 to the first end 14 of this input shaft 13 the neck 12 of the handle 10 fits. It should be noted that at this end 18 of the input shaft 13 first rotation indexing means 19 may be provided with which second indexing means 20 arranged in the fitting housing 21 of the neck 12 are able to cooperate, for the purpose of angularly indexing the handle 10 on this input shaft 13.

[0033] Such indexing means can take different embodiments. In the preferred and illustrated embodiment, the first indexing means 19 are defined at the level of the input shaft 13 by axial ribs capable of cooperating with suitable axial grooves in the fitting housing 21 of the neck 12.

[0034] In particular, the first and second indexing means (19, 20) may be provided such that only one or more specific angular mounting positions of the handle 10 on the input shaft 13 are possible. This may be, in particular, a mounting position for a right handle and a mounting position for a left handle.

[0035] The handle 10 is pivotally mounted on the base 7 between a locking position 22 and at least one unlocking position 23. Here again, these are indexed using suitable indexing means 24 described further on.

[0036] The pivoting of the handle 10 around the axis 9 between these positions 22 and 23 results in the driving of an output shaft 25 with axis 26 parallel to the axis 9 of the input shaft, therefore of the handle.

[0037] The output shaft 25 is defined to extend to the rear of the base 7 through an opening 28 adapted so as to be able to cooperate with the locking fitting equipping the leaf 3. Such an output shaft 25 may be in the form of an operating square. It is rotatably mounted in the base 7 by means of a hub 28 taking position in a circular housing 29 adapted in this base 7 and surmounting, in a fixed manner, the operating square or comprising a housing adapted for receiving such an operating square.

[0038] Advantageously, the driving of this output shaft 25 by means of the handle 10 occurs via a cam-type transmission mechanism 30 with variable gearing between the locking position 22 and at least one unlocking position 23.

[0039] According to a first illustrated embodiment, the output shaft 25 carries a cam 31 comprising a cam track 32 on which a drive finger 33 rests at the end 34 of a transmission arm 35 integral in rotation with the input shaft 13. and extending perpendicular to the pivot axis 9 of the latter.

[0040] According to the invention, the distance separating the drive finger 33 from the pivot axis 9 of the input shaft 13 is defined as greater than the distance separating the cam track 32 from the axis 26 of rotation of the output shaft 25.

[0041] According to a preferred layout, the distance separating the drive finger 33 from the pivot axis 9 of the input shaft 13 is greater than the distance separating the rotation axes 9 and 26 respectively of the input shaft 13 and the output shaft 25.

[0042] Furthermore, these axes of rotation 9 and 26, respectively of the input shaft 13 and of the output shaft 25, extend parallel and in the same plane as the axis of the holes 8 for the passage of fixing screws in the base 7. In addition, these axes of rotation 9 and 26 respectively of the input shaft 13 and of the output shaft 25 are located between these screw passage holes 8.

[0043] Under these conditions, the transmission arm 35 extends from the pivot axis 9 of the input shaft 13 beyond a median plane 36 passing through the rotation axis 26 of the output shaft 25, plane 36 perpendicular to the alignment plane of the axes 9 and 26, this to reach, via the drive finger 33, the cam track 32 (or conversely via the cam track, the drive finger).

[0044] In short, this cam track 32 is arranged on a portion 37 of the cam 31 carried by the output shaft 25 located on the side 38 of the median plane 36, opposite that 39 oriented in the direction of the axis of rotation 9 of the input shaft 13.

[0045] As illustrated in [Fig. 2], the cam track 32 may take the form of a U-shaped notch 40 extending in the cam 31, substantially radially relative to the axis of rotation 26 of the output shaft 25, the drive finger 33 acting on each of the walls laterally delimiting this U-shaped notch 40 by moving radially in the latter according to the distance of the drive finger 33 relative to the axis of rotation 26 of the output shaft 25 as a function of its angular position relative to the pivot axis 9 of the input shaft 13 and therefore of the handle 10 between the locking 22 and unlocking 23 positions.

[0046] In another embodiment, more particularly visible in figures 7 to 10, this cam track 32 is defined by a support plane 41 extending in a plane parallel to the axis of rotation 26 of the output shaft 25 and on which the drive finger 33 bears. Depending on the angular position of the latter relative to the pivot axis 9 of the input shaft 13 and the direction of rotation of the handle 10, this drive finger 33 controls the pivoting of the output shaft 25 in an identical direction, according to a multiplication ratio which varies depending on the distance separating the drive finger 33 from the pivot axis 26 of the output shaft 25.

[0047] The invention also relates to embodiments corresponding to a kinematic inversion of the embodiments described above and consisting of equipping the end 34 of the transmission arm 35 of a cam provided with a cam track designed to cooperate with a drive finger equipping the output shaft 25.

[0048] Thus, at this end 34 of the transmission arm 35, the latter can take the form of a fork with a U-shaped notch corresponding to the cam track 32 engaged with a drive finger that the output shaft 25 comprises, each of the walls laterally delimiting this U-shaped notch acting on the drive finger as a function of the angular position of the transmission arm 35 relative to the pivot axis 9 of the input shaft 13 between the locking 22 and unlocking 23 positions of the handle 10.

[0049] In the same way, this end 34 of the transmission arm 35 can be configured in the form of a cam with a cam track defining a support plane extending in a plane parallel to the axis of rotation 26 of the output shaft 25 and on which the drive finger equipping this output shaft 25 bears. Depending on the angular position of the transmission arm 35 relative to the pivot axis 9 of the input shaft 13 and the direction of rotation of the handle 10, this support plane acts on the drive finger by controlling the pivoting of the output shaft 25 in an identical direction, according to a multiplication ratio which varies depending on the distance separating the point of contact of this support plane with said drive finger relative to the pivot axis 26 of the output shaft 25.

[0050] To return to the indexing means 24 of the locking 22 and unlocking 23 positions of the handle 10, they are preferably designed to cooperate with the reduction gear transmission mechanism 30. If these indexing means 24 can adopt different designs, according to a preferred embodiment and illustrated in the figures, these indexing means 24 comprise a spring blade 24a arranged, transversely, on the base 7 and on which the end 34 of the transmission arm 35 bears between the locking 22 and unlocking 23 positions of the handle 10. Advantageously, this spring blade 24a is configured to exert on this end 34 of the transmission arm 35 a force resisting the movement of the latter from the locking position 22 of the handle 10 towards the unlocking position 23 and / or from this unlocking position 23 towards the locking position 22.Alternatively or in combination, this spring blade 24a can be configured to exert on the end 34 of the transmission arm 35 a force resisting the movement of the latter from the locking position 22 of the handle 10 towards the unlocking position 23 and / or vice versa, from the unlocking position 23 towards the locking position 22 of this handle 10, resistance force increasing initially, then decreasing under the impulse of a rotation command of the handle 10 as the case may be from the locking position 22 towards the . unlocking position 23 and vice versa from the unlocking position 23 into the locking position 22. For this purpose, this spring blade 24a has recesses along its length, preferably in its end portions with which the end 34 of the transmission arm 35 cooperates in the locking 22 and unlocking 23 positions of the handle 10.

[0051] It should be noted that such a control device 1 according to the invention is applicable to a leaf opening both to the left and to the right. If we consider the figures illustrating a control device applied to a leaf opening to the right, the position identified as being that of unlocking 23 becomes the locking position in an application to a leaf opening to the left and conversely the locking position becoming the unlocking position in this case. Thanks to the indexing means 24, the handle 10 can be angularly adjusted on the input shaft 13. If the bar 11 has an offset (towards the right in the example corresponding to the figures) in an application opening to the left, the handle will have an offset to the left.

[0052] According to the invention, a covering cap 42 fits onto the base 7, covering the latter. It is equipped with clipping means provided to cooperate with retaining means included in the base 7 for holding the cap 42 on the latter.

[0053] Similarly, on its side walls, the base 7 also comprises hooking tabs 43 capable of cooperating with a retaining rim 44 extending around the periphery of the neck 12 substantially at the end opposite the bar 11 of the handle.

[0054] Once the neck 12 of the handle 10 is fitted onto the input shaft 13, said hooking tabs 43 elastically engage with this retaining rim 44, the fitting of the covering cap 42 onto the base 7 ensuring that these retaining tabs 43 are kept in the locking position. It is therefore first necessary to unclip the cap 42 from the base 7 to release the retaining tabs 43. These then have the possibility of moving away radially relative to the retaining rim 44 to allow the neck 12 of the handle 10 to be disengaged from the input shaft 13.

[0055] For the assembly of this control device 1, the output shaft 25 is first introduced into the base 7 so that it extends to the rear of this base 7 passing through the opening 27 in the latter. The input shaft 13 is then positioned on the tenon 16 so as to make the track 32 of the cam 31 cooperate with the drive finger 33. This input shaft 13 is immobilized axially on this tenon 16 by means of the fixing means 16a.

[0056] Through the opening 45 in the front face of the covering cap 42, the latter is fitted onto the neck 12 of the handle 10. The latter is then fitted onto the input shaft 13, making the first means coincide as appropriate. indexing means 19 with the second indexing means 20, before clipping the covering cover 42 onto the base 7.

[0057] The advantages arising from the present invention consist in that the multiplication mechanism of this control device 1 is of simple design, while the components fit easily onto each other. In this respect, there is no possible assembly error, except that it must be ensured when fitting the parts together that the cam 31 and the drive finger cooperate with each other. But no drive offset is possible in comparison with gear teeth.

Claims

Claims

1. Control device 1 for locking fittings of the lock, cremone bolt or similar type for joinery, such as a door or window 2, comprising a base 7 on which a handle 10 is mounted pivotally about an axis 9 perpendicular to said base 7 and acting between a locking position 22 and at least one unlocking position 23 on an input shaft 13 for driving, by means of a gear reduction transmission mechanism 30, an output shaft 25 with an axis 26 parallel to the axis 9 of the input shaft 13, characterized in that the gear reduction transmission mechanism 30 is of the cam type and with variable gear reduction between the locking position 22 and the unlocking position 23.

2. Control device 1, according to claim 1, characterized in that the multiplication transmission mechanism 30 comprises a drive finger 33 equipping a first end 34 of a transmission arm 35 made integral in rotation at its opposite end of the input shaft 13, the drive finger 33 cooperating with a cam track 32 of a cam 31 equipping the output shaft 25 for the rotation control of the latter under the impulse of the rotation of the handle 10.

3. Control device 1, according to claim 1, characterized in that the multiplication transmission mechanism 30 comprises a cam 31 provided with a cam track 32 and equipping a first end 34 of a transmission arm 35 made integral in rotation at its opposite end of the input shaft 13, the cam track 32 cooperating with a drive finger 33 equipping the output shaft 25 for the rotation control of the latter under the rotation impulse of the handle 10.

4. Control device 1, according to claim 2 or 3, characterized in that the distance separating the drive finger 33 or, respectively, the cam track 32 from the pivot axis 9 of the input shaft 13 is defined as greater than the distance separating the cam track 32 or, respectively, the drive finger 33 from the axis 26 of rotation of the output shaft 25, this distance separating the drive finger 33 or, respectively, the cam track 32, from the pivot axis 9 of the input shaft 13 being greater than the distance separating the pivot axes 9 and 26 respectively of the shaft input shaft 13 and output shaft 25.

5. Control device 1, according to any one of claims 1 to 4, characterized in that the base 7 comprises two holes 8 for the passage of fixing screws located at a standardized distance from each other, these holes 8 being located in the same alignment and equidistant from the pivot axis 26 of the output shaft 25, the pivot axes 9 and 26, respectively, of the input shaft 13 and the output shaft 25 extending parallel, in the same plane and between the axes of the holes 8 for the passage of fixing screws.

6. Control device 1, according to any one of claims 2 to 5, characterized in that the cam track 32 takes the form of a U-shaped notch 40 extending in the cam 31, substantially radially relative to the axis of rotation 26 of the output shaft 25, the drive finger 33 acting on each of the walls laterally delimiting this U-shaped notch 40 by moving radially in the latter according to the distance of the drive finger 33 relative to the axis of rotation 26 of the output shaft 25 as a function of its angular position relative to the pivot axis 9 of the input shaft 13 and therefore of the handle 10 between the locking 22 and unlocking 23 positions.

7. Control device 1, according to any one of claims 2 to 5, characterized in that the cam track 32 is defined by a support plane 41 extending in a plane parallel to the axis of rotation 26 of the output shaft 25 and on which the drive finger 33 bears.

8. Control device 1, according to any one of claims 1 to 7, characterized in that the input shaft 13 comprises, at a first end 14, a bore 15 fitting freely in rotation on a tenon 16 of adjusted section extending perpendicularly from the bottom 17 of the base 7 and on which the input shaft 13 is axially blocked by fixing means 16a.

9. Control device 1, according to claim 8, characterized in that the input shaft 13 has an end 18 opposite the first end 14 on which a neck 12 of the handle 10 fits, on this end 18 of the input shaft 13 being provided first rotation indexing means 19 cooperating with second indexing means 20 provided in a fitting housing 21 that the neck 12 includes, designed to angularly index the handle 10 on the input shaft 13.

10. Control device 1, according to any one of claims 1 to 9, characterized in that it comprises indexing means 24 of the locking 22 and unlocking 23 positions of the handle 10.

11. Control device 1, according to claim 2 or 3 and claim 10, characterized in that the indexing means 24 comprise a spring blade 24a arranged, transversely, on the base 7 and on which the end 34 of the transmission arm 35 bears between the locking 22 and unlocking 23 positions of the handle 10, said spring blade 24a being configured to exert on this end 34 of the transmission arm 35 a force resisting the movement of the latter from the locking position 22 of the handle 10 in the direction of the unlocking position 23 and / or from this unlocking position 23 in the direction of the locking position 22.

12. Control device 1, according to claim 11, characterized in that the spring blade 24a can be configured to exert on the end 34 of the transmission arm 35 a resistance force which increases, then decreases under the impulse of a rotation command of the handle 10 as the case may be from the locking position 22 towards the unlocking position 23 and / or vice versa from the unlocking position 23 into the locking position.

13. X'X'. Control device 1, according to any one of the preceding claims, characterized in that the locking 22 and unlocking 23 positions for an application of the control device to a joinery opening to the right, correspond respectively to the unlocking and locking positions for an application of the control device 1 to a joinery opening to the left or vice versa.

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