Locking hardware control device

Abstract

Title: Locking Hardware Control Device The invention relates to a locking hardware control device 1 for a lock, cremone bolt, or similar type of lock 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, via a reduction gear 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 reduction gear transmission mechanism 30 is of the cam type and has variable reduction between the locking position 22 and the unlocking position 23. Figure for the abstract: [Fig. 2]

Description

Title of the invention: Locking hardware control device

[0001] The present invention relates to a locking hardware control device of the lock, cremone bolt or similar type for joinery, such as door or window, comprising a base on which a handle is mounted pivotally around an axis perpendicular to said base and acting on an input shaft for driving, via a 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 cremone bolt, a cremone bolt lock or similar equipping a piece of joinery, such as a door or window.

[0003] Typically, a joinery, such as a door or window, comprises at least one leaf mounted hinged or sliding on a fixed frame. This leaf or fixed frame is equipped, at the level of at least one of its rails or stiles, with a locking fitting comprising at least one locking element which, in the locked position, cooperates with a strike plate provided respectively on the fixed frame or the leaf, so as to keep the latter closed on said fixed frame.

[0004] A user operates such a locking mechanism by means of a control device in the form of a handle mounted for rotation on a base designed to be surface-mounted on, as appropriate, the door leaf or the fixed frame of the joinery. Most frequently, the handle operates this locking mechanism by means of an output shaft on which it acts directly and which forms its axial extension through the base on which the handle is mounted for rotation. This output shaft is usually called the operating spindle.

[0005] Due to this configuration, the angle of rotation imparted to the handle by the user strictly determines the angular amplitude of the output shaft's displacement. In this regard, the angular displacement to be imparted 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, particularly 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 command of the handle. In particular, it is quite Typically, when a sliding door is locked, the handle extends vertically along the front stile of that door. This same handle is used by the user to open the sliding door by pulling it. To facilitate this operation, it is preferable that the handle, after the unlocking command is issued, remain in a steeply inclined position, close to vertical. Indeed, in a horizontal position, the user must grip the handle tightly to transfer the pulling force necessary to move the sliding door.

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

[0008] In particular, a control device comprising a handle acting on an input shaft is known from document FR 2 865 493 B1. This handle rotates a cam about its pivot axis. The cam extends in a perpendicular plane and has, at its end opposite this pivot axis, a portion of semi-circular teeth meshing with a toothed ring mounted on the output shaft. Since the distance between this semi-circular toothing and the pivot axis of the cam, and therefore of the handle, is greater than the radius of the ring with which this semi-circular toothing meshes, 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 ring whose section is larger compared 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 complex in design, requiring compliance with strict tolerances and presenting a risk of jamming in the event of excessive wear and play.

[0011] It was during a first inventive step that the applicant realized that by substituting drive parts with a larger cross-section for gear teeth, which are necessarily smaller, it is possible to increase durability. Furthermore, such a gear drive can lead to assembly errors, for example, due to misalignment between the teeth of these gears.

[0012] Furthermore, thanks to drive parts cooperating in a cam-like manner, the transmission ratio between the rotation of the handle and that of the output shaft is likely to be variable and adapted to the constraints of engagement and / or disengagement of locking devices in relation to a strike plate.

[0013] To this end, the invention relates to a locking hardware control device of the lock, cremone bolt, or similar type for joinery, such as doors or windows, comprising a base on which a handle is mounted pivotally about an axis perpendicular to said base and acting on an input shaft to drive, via a reduction gear transmission mechanism, an output shaft with an axis parallel to the input shaft. Advantageously, this reduction gear transmission mechanism is of the cam type and has variable reduction between the locked and unlocked positions.

[0014] According to the invention, the reduction transmission mechanism comprises a drive finger fitted to one end of a transmission arm which is rotationally fixed to its opposite end of the input shaft. The drive finger cooperates with a cam track fitted to the output shaft to control the rotation of the latter under the impulse of the rotation of the handle.

[0015] According to an inverted design, the reduction transmission mechanism includes a cam track equipping one end of a transmission arm made rotationally fixed to 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 objects and advantages of the present invention will become apparent from the detailed description below, this description being supplemented by the accompanying figures given by way of illustration and not limitation, among which:

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

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

[0019] [Fig.3] The [Fig.3] is a schematic and longitudinal sectional view of this control device;

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

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

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

[0023] [Fig.7] Fig.7 is a top view of the hood control device with the base cover and handle having been removed, the multiplication transmission mechanism is shown 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 according to the unlocking case;

[0025] [Fig.9] [Fig.9] is a view similar to [Fig.7], the transmission mechanism multiplication being represented 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 represented in figures 1 to 10 of the accompanying drawings, the present invention relates to a control device 1 for a locking fitting of the lock type, cremone bolt, cremone bolt lock or similar equipping a joinery, such as a door or a window 2.

[0028] In [Fig. 1], a window 2 is schematically represented, comprising at least one sash 3 mounted to slide on a fixed frame 4. In this [Fig. 1], this sash 3 is shown partially open, preserving a passage between its front mullion 5 and the front mullion 6 corresponding to the fixed frame 4, onto which it can close. The locking hardware is fitted, for example, in a rebate, to this sliding sash 3 at the height of this front mullion 5, to which a control device 1, according to the invention, is attached. This device allows a user to operate the locking hardware to, as appropriate, lock or unlock the sliding sash 3, but also to push it into the closed position or, conversely, into the open position.

[0029] To this end, this control device 1 comprises a base 7 fixed, in the example corresponding to [Fig. 1], to the inner side of the front stile 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. Typically, 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 later.

[0030] A handle 10 is pivotally mounted on this base 7 along an axis 9 perpendicular to it. Specifically, the handle 10 usually comprises a bar 11 which the user can grasp to operate the control device 1. It also comprises a collar 12 extending under this bar 11, often at one of its ends. The handle 10 is mounted on the base 7 through this collar 12, either directly or indirectly, the latter being the most common solution and illustrated in the figures.

[0031] In particular, this handle 10 is mounted for rotation on the base 7 by means of an input shaft 13. This has, at a first end 14, a bore 15 through which it fits freely for rotation on a tenon 16 of fitted section extending perpendicularly from the bottom 17 of the base 7. Fixing means 16a can axially lock 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 is fitted. Note that at the level of this end 18 of the input shaft 13 first rotational indexing means 19 can be provided with which second indexing means 20 provided in the socket 21 of the neck 12 are able to cooperate, in order to angularly index the handle 10 on this input shaft 13.

[0033] Such indexing means can take different forms of embodiment. In the preferred and illustrated one, the first indexing means 19 are defined at the level of the input shaft 13 by axial ribs adapted to cooperate with suitable axial grooves in the socket housing 21 of the neck 12.

[0034] In particular, the first and second indexing means (19, 20) can be provided such that only one or more specific angular mounting positions of the handle 10 on the input shaft 13 are possible. These may be, in particular, a mounting position for a right-hand handle and a mounting position for a left-hand 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 by means of 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 designed to extend to the rear of the base 7 through an opening 28 adapted to cooperate with the locking fitting on the leaf 3. Such an output shaft 25 may be in the form of a square drive. It is rotatably mounted in the base 7 by means of a hub 28 positioned in a circular housing 29 adapted in this base 7 and fixedly mounted above the square drive or comprising a housing adapted for receiving such a square drive.

[0038] Advantageously, the drive of this output shaft 25 by means of the handle 10 occurs via a cam-type, variable-ratio transmission mechanism 30 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 having a cam track 32 on which a drive finger 33 rests at the end 34 of a transmission arm 35 fixed in rotation to the input shaft 13 and extending perpendicularly 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 rotation axis 26 of the output shaft 25.

[0041] According to a preferred arrangement, 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 rotation axes 9 and 26, respectively of the input shaft 13 and the output shaft 25, extend parallel and in the same plane as the axis of the screw holes 8 in the base 7. In addition, these rotation axes 9 and 26, respectively of the input shaft 13 and the output shaft 25, are located between these screw 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 in order to reach, via the drive finger 33, the cam track 32 (or conversely via the cam track, the drive finger).

[0044] In summary, this cam track 32 is provided 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 to 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 can take the form of a U-shaped notch 40 extending into the cam 31, substantially radially with respect 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 with respect to the axis of rotation 26 of the output shaft 25 as a function of its angular position with respect to the pivot axis 9 of the input shaft 13 and therefore of the handle 10 between the locking positions 22 and the unlocking positions 23.

[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 a identical direction, according to a multiplication ratio that 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 with a cam having 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, it can take a fork shape with a U notch corresponding to the cam track 32 in contact with a drive finger that includes the output shaft 25, each of the walls laterally delimiting this U notch acting on the drive finger according to the angular position of the transmission arm 35 relative to the pivot axis 9 of the input shaft 13 between the locking positions 22 and unlocking positions 23 of the handle 10.

[0049] Similarly, 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 the same direction, according to a multiplication ratio that varies depending on the distance separating the point of contact of this support plane with said drive finger from the pivot axis 26 of the output shaft 25.

[0050] Returning to the indexing means 24 for the locking positions 22 and unlocking positions 23 of the handle 10, they are preferably designed to cooperate with the reduction gear transmission mechanism 30. While these indexing means 24 can adopt different designs, according to a preferred embodiment illustrated in the figures, these indexing means 24 include a spring blade 24a formed transversely on the base 7 and on which the end 34 of the transmission arm 35 bears between the locking positions 22 and unlocking positions 23 of the handle 10. Advantageously, this spring blade 24a is configured to exert on this end 34 of the transmission arm 35 a resistance force against 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 in the direction of the . unlocking position 23 and / or vice versa, from the unlocking position 23 towards the locking position 22 of this handle 10, resistance force initially increasing, then decreasing under the impulse of a rotational 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 notches 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 to both the left and the right. Considering the figures illustrating a control device applied to a leaf opening to the right, the position identified as the unlocking position 23 becomes the locking position in an application to a leaf opening to the left, and conversely, the locking position becomes 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 (to the right in the example corresponding to the figures) in a left-opening application, the handle will have an offset to the left.

[0052] According to the invention, a cover 42 fits onto the base 7, covering the latter. It is equipped with clipping means designed to cooperate with retention means provided by the base 7 for holding the cover 42 onto the latter.

[0053] Similarly, on its side walls, the base 7 also includes hooking tabs 43 suitable for 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, the said locking tabs 43 elastically engage with this retaining edge 44, the fitting of the cover cap 42 onto the base 7 ensuring that these retaining tabs 43 remain in the locked position. It is therefore necessary first to unclip the cover 42 from the base 7 to release the retaining tabs 43. These can then move radially apart from the retaining edge 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 inserted into the base 7 so that it extends to the rear of the base 7 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 finger drive 33. This input shaft 13 is axially immobilized on this tenon 16 by means of the fixing means 16a.

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

[0057] The advantages arising from the present invention consist in the fact that the multiplication mechanism of this control device 1 is of simple design, while the components fit together easily. In this regard, there is no possibility of assembly error, except that care must be taken during the fitting of the parts to ensure that the cam 31 and the drive finger cooperate with each other. But no drive misalignment is possible compared to gear teeth.

Claims

1.

2. Demands Control device 1 for a locking fitting 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 an output shaft 25 with an axis 26 parallel to the axis 9 of the input shaft 13, this by means of a gear reduction transmission mechanism 30 which is of the cam type and has variable gear reduction between the locking position 22 and the unlocking position 23, characterized in that: - the gear reduction transmission mechanism 30 comprises a drive finger 33 equipping a first end 34 of a transmission arm 35 made rotationally fixed at its opposite end to the input shaft 13,the drive finger 33 cooperating with a cam track 32 of a cam 31 fitted to the output shaft 25 for the rotational control of the latter under the impulse of the rotation of the handle 10; - 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, this distance separating the drive finger 33 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 input shaft 13 and the output shaft 25. Control device 1 for a locking fitting 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 an output shaft 25 with an axis 26 parallel to the axis 9 of the input shaft 13, this by means of a gear reduction transmission mechanism 30 which is of the cam type and with variable gear reduction between the locking position 22 and the unlocking position 23, characterized in that: - the reduction transmission mechanism 30 includes a cam 31 equipped with a cam track 32 and fitting a first end 34 of a transmission arm 35 made rotationally fixed at its opposite end to the input shaft 13, the cam track 32 cooperating with a drive finger 33 fitting the output shaft 25 for the rotation control of the latter under the rotation impulse of the handle 10; - the distance separating 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 from the axis 26 of rotation of the output shaft 25, this distance separating 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 input shaft 13 and the output shaft 25.

3. Control device 1, according to any one of the preceding claims, characterized in that the base 7 has two screw passage holes 8 located at a normalized distance from each other, these holes 8 being 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 screw passage holes 8.

4. Control device 1, according to any one of the preceding claims, characterized in that the cam track 32 takes the form of a U-shaped notch 40 extending in the cam 31, substantially radially with respect 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 with respect to the axis of rotation 26 of the output shaft 25 as a function of its angular position with respect to the pivot axis 9 of the input shaft 13 and thus of the handle 10 between the locking positions 22 and the unlocking positions 23.

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

6. Control device 1, according to any one of the preceding claims, characterized in that the input shaft 13 has, at a first end 14, a bore 15 which is free to rotate on a tenon 16 of fitted section extending perpendicularly from the bottom 17 of the base 7 and on which the input shaft 13 is axially locked by fastening means 16a.

7. Control device 1, according to claim 6, characterized in that the input shaft 13 has an end 18 opposite the first end 14 on which a collar 12 of the handle 10 fits, on this end 18 of the input shaft 13 being provided first rotational indexing means 19 cooperating with second indexing means 20 provided in a socket 21 which comprises the collar 12, designed to angularly index the handle 10 on the input shaft 13.

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

9. Control device 1, according to claim 8, characterized in that the indexing means 24 comprise a spring blade 24a formed transversely on the base 7 and on which the end 34 of the transmission arm 35 bears between the locking positions 22 and unlocking positions 23 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 towards the unlocking position 23 and / or from this unlocking position 23 towards the locking position 22.

10. Control device 1, according to claim 9, characterized in that the spring blade 24a can be configured to exert on the end 34 of the transmission arm 35 an increasing, then decreasing, resistance force under the impulse of a rotational control of the handle 10, as appropriate, from the locking position 22 towards the unlocking position 23 and / or conversely from the unlocked position 23 to the locked position 22.

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

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