Rolling device for sliding wing

Abstract

The invention relates to a rolling device (10) for a sliding door (4) of a window or door frame (0) movable along a sliding direction (C), said rolling device (10) comprising at least one carriage (20) having a base (22) provided with at least two support elements (26), and at least two rolling units (28, 29), each connected to the base (22) and provided with a roller (30) and a support area (32) bearing against one of the support elements (26), a first rolling unit (28) of the at least two rolling units (28, 29) being coupled to a second rolling unit (29) of the at least two rolling units (28, 29) so as to form a first mechanical linkage (34) connecting the first rolling unit (28) to the second rolling unit (29) and presenting to minus one degree of freedom.

Description

[0001] The invention relates to a rolling device for a sliding opening of a joinery, preferably for a sliding opening of the door, window or similar type, as well as a joinery comprising a sliding opening equipped with such a rolling device.

[0002] The present invention will find application in the field of building hardware and relates to joinery with a sliding opening. More particularly, it concerns such a rolling device designed to partially fit within a profile of said opening defining the lower rail of said opening.

[0003] Sliding doors and windows typically require a rolling mechanism to ensure the door's movement relative to the frame. This mechanism generally includes at least two sliding tracks, commonly called carriages, and at least one reversible locking system to connect at least one of the vertical stiles of the door and the frame. Each carriage usually comprises at least one roller running on a rail attached to the lower frame, but may have more rollers depending on the weight of the door or window being moved. Each carriage is also secured against the lower profile of the door or window.

[0004] Most often, at least one of the carriages on the sash is height-adjustable to ensure proper alignment of the vertical profiles of the sash and frame, thus guaranteeing locking with the locking system. Typically, this height adjustment is made via a screw integrated into the carriage or a linkage accessible from one or both ends of the sash's bottom rail.

[0005] However, in the case of a two-roller trolley, an articulation is required due to the inclination of the door leaf caused by the height adjustment of at least one of the trolleys. This articulation is generally achieved through a rolling unit carrying two rollers, hinged approximately at its center relative to the trolley housing. This arrangement automatically limits the number of rollers per trolley to two, since beyond two rollers, at least one will always be unloaded, given that a line can only pass through two points (the principle of a railway wagon bogie).

[0006] Furthermore, document EP 4 039 929, filed by the applicant, describes a sliding door bearing system comprising a housing containing at least two bearing units arranged one behind the other. Each bearing unit has a roller mounted for rotation about a horizontal axis. These bearing units are mounted in the housing, which is free to move in translation in at least one vertical and one horizontal direction. This housing includes inclined support ramps against which a bearing surface of substantially identical inclination, shared by the bearing units, is made. Through adjustment means and by interaction of the housing's support ramps with the identical inclination bearing surfaces, the height of the bearing units within the housing is adjusted.In the event of a lack of parallelism between the opening and the support rail along which the rollers are to move, the housing is to tilt above the rolling units causing a relative displacement by sliding of these rolling units relative to each other.

[0007] Document WO 2011 / 100788 describes a similar prior art, namely a sliding door roller system comprising a housing for two roller units arranged one behind the other. However, the inclined support ramps of the housing each have a T-shaped rail onto which a slide engages, formed at the level of the inclined bearing surface of each roller unit. These roller units are also nested one inside the other at their bearing surfaces, a nesting that preserves the possibility of these bearing surfaces sliding against each other.

[0008] The document CN106193867A describes a rolling device comprising several rolling units.

[0009] This sliding of the bearing surfaces of the rolling units along the ramps, together with the sliding of the rolling units against each other, can lead to blocking situations and difficult adjustment.

[0010] In an inventive approach, the applicant went against the teaching resulting from the state of the art by imagining that the rolling units do not necessarily have to be free in translation at the height of their reciprocal support zone.

[0011] Thus, the invention relates to a rolling device for a sliding opening of a joinery, according to claims 1 or 2.

[0012] The rolling device according to the invention can be easily adapted to support different openings of different size and / or weight(s).

[0013] Preferably, the rolling units are aligned one behind the other along a direction that is essentially parallel to the sliding direction and / or orthogonal to the axis of rotation and / or orthogonal to the axis of pivoting.

[0014] According to one possibility, the support zone comes to rest against one of the support elements to form a second mechanical link having at least one degree of freedom.

[0015] According to a possible additional feature, the carriage includes an adjustment element allowing adjustment of the gap between the base and the rolling units in a first adjustment direction which is parallel to the sliding direction and / or a second adjustment direction which is orthogonal to the sliding direction and / or orthogonal to the axis of rotation.

[0016] According to one variant, the adjusting element includes an adjusting screw extending essentially in a direction that is parallel to the sliding direction.

[0017] According to a preferred variant of the rolling device, the bearing area comes into contact with one of the support elements independently of an inclination of the rolling unit provided with this same bearing area.

[0018] Preferably, the support area has at least one vaulted surface.

[0019] According to one possible additional feature, the base comprises a plurality of segments connected to each other, at least two of the segments among the plurality of segments each being provided with one of the support elements.

[0020] The present design makes it possible to overcome the limitation of two rollers per carriage.

[0021] The invention further relates to a joinery comprising a sliding opening, preferably a sliding opening of the door, window or similar type, comprising at least one profile defining the lower crossbar of said opening and a rolling device according to the invention, the means of fixing the base of the rolling device being fixed to the profile.

[0022] Other aims and advantages of the present invention will become apparent during the following description, relating to three exemplary embodiments.

[0023] Understanding this description will be facilitated by referring to the attached drawings in which: [ Fig.1 ] is a schematic representation of a joinery in the form of a window equipped with a locking system for a sliding joinery according to the implementation examples; [ Fig.2A ] is a schematic perspective representation of the rolling device according to a first embodiment of the invention; [ Fig.2B ] is a schematic representation of a cross-section of the bearing device according to the first embodiment; [ Fig.3A ] is a schematic perspective representation of the rolling device according to a second embodiment of the invention; [ Fig.3B ] is a schematic lateral representation of the bearing device according to the second embodiment; [ Fig.3C ] is a schematic top-view representation of the bearing device according to the second embodiment; [ Fig.4A ] is a schematic perspective representation of the bearing device according to a third embodiment which is not covered by the claims; [ Fig.4B ] is a schematic lateral representation of the bearing device according to the third embodiment; and [ Fig.4C ] is a schematic representation viewed from above of the rolling device according to the third embodiment example.

[0024] As shown in the figures of the accompanying drawings, the present application relates to a rolling device 10 for a sliding opening 4 of a joinery 0, preferably for a sliding opening of the door, window or similar type. Said sliding opening 4 is capable of being moved along a sliding direction C. Said rolling device 10 comprises at least one carriage 20 including a base 22 provided with fastening means 24 allowing the carriage 20 to be fixed to a profile 6 of said opening 4 defining the lower rail of said opening 4 and provided with at least two support elements 26, and at least two rolling units 28, 29 each connected to the base 22 and provided with a roller 30 mounted to rotate freely about an axis of rotation R as well as a bearing area 32 bearing against one of the support elements 26.A first bearing unit 28 among the at least two bearing units 28, 29 is coupled to a second bearing unit 29 among the at least two bearing units 28, 29 so as to form a first mechanical link 34 connecting the first bearing unit 28 to the second bearing unit 29 and having at least one degree of freedom.

[0025] This application also relates to a joinery 0 comprising a sliding opening 5, preferably a sliding opening of the door, window or similar type, including at least one profile 6 defining the lower rail of said opening 5 and a rolling device 10 as specified in this application. The fastening means 24 for the base 22 of the carriage 20 of the rolling device 10 is fixed to the profile 6.

[0026] As depicted in the figure 1 According to the present application, the joinery 0 may be equipped with locking means 1 and at least one means of operation, such as a motorization or an operating handle 4. The sliding direction C corresponds to a horizontal opening movement of the leaf 5. The sliding direction C is ensured through the carriage(s) 20 forming part of the rolling device 10 rolling on one or more rails 12 integrated or added to a cross member 8 of a frame 7 of the joinery 0.

[0027] The locking means 1 may also be provided to collaborate with at least one trolley 20 of the rolling device 10 so as to ensure the adjustment and / or lifting and lowering of the leaf 5 under the action of the operating means 4 and in a vertical direction Y, mainly oriented in the direction of the weight of the leaf 5.

[0028] The first mechanical link 34 may have a degree of freedom allowing the first rolling unit 28 to tilt relative to the second rolling unit 29 around a pivot axis P, the pivot axis P extending preferentially in a direction that is parallel to the rotation axis R and / or orthogonal to the sliding direction C.

[0029] The rolling units 28, 29 can be aligned one behind the other along a direction which is essentially parallel to the sliding direction C and / or orthogonal to the axis of rotation R and / or orthogonal to the pivot axis P.

[0030] The support zone 32 can bear against one of the support elements 26 to form a second mechanical link 36 having at least one degree of freedom.

[0031] The carriage 20 may include an adjustment element 38 allowing adjustment of the gap between the base 22 and the rolling units 28, 29 in a first adjustment direction which is parallel to the sliding direction C and / or a second adjustment direction which is orthogonal to the sliding direction C and / or orthogonal to the axis of rotation R.

[0032] The support area 32 can bear against one of the support elements 26 independently of an inclination of the rolling unit 28, 29 provided with this support area 32.

[0033] The support area 32 and / or the support elements 26 may have at least one vaulted surface 27.

[0034] Each bearing unit 28, 29 can be provided with a single bearing roller 30.

[0035] The first bearing unit 28 among the bearing units 28, 29 can be designated as the main bearing unit and the second bearing unit 29 among the bearing units 28, 29 as well as any additional bearing units can be designated as auxiliary bearing units.

[0036] The main bearing unit 28 can be coupled to one or more auxiliary bearing units 29, placed in series with each other or following the main bearing unit. The auxiliary bearing units 29 can have at least two contact areas 40, 42 with the main housing: a first contact area 40 allows the auxiliary housing(s) to be positioned relative to the main housing and / or the base 22 in the sliding direction C; the second contact area 42 is formed by the support area 32 and / or the support elements 26 and allows the base 22 and / or the main bearing unit to transmit a height adjustment command to the auxiliary bearing units. In particular, these two contact areas 40, 42 are independent of the inclination of each bearing unit 28, 29 relative to the rail 12 and / or the lower profile 6 of the sash 0.Each auxiliary bearing unit, being equipped with a single roller 30, is therefore capable of tilting and independently transferring the height adjustment command to any subsequent bearing units. The immediate advantage of such a design is to streamline the manufacturing of the locking systems to reduce costs, and to allow for a greater number of bearing units placed in series, thus better matching the number of rollers 30 to the load.

[0037] In a first example of an embodiment according to the invention shown in the figures 2A et 2B The base 22 of the carriage 10 receives the adjusting element 38. The adjusting element 38 may include an adjusting screw 39, which engages with a connecting rod 41, itself articulated on the first bearing unit 28 corresponding to the main bearing unit. This first bearing unit 28, corresponding to the main bearing unit, has at least one oblong recess 44, inclined with respect to the sliding direction C and accommodating a projection 46 connected to the base 22. The second bearing unit 29 and / or the auxiliary bearing unit(s) may also have at least one such oblong recess 44, inclined with respect to the sliding direction C and accommodating an additional projection 46 connected to the base 22.The main bearing unit and / or the first bearing unit 28 is connected to at least one auxiliary bearing unit and / or the second bearing unit 29 through the first mechanical linkage 34, capable of driving the auxiliary bearing unit and / or the second bearing unit 29 along the sliding direction C. Each of the bearing units 28, 29 also has the support area 32 which, together with one of the support elements 26, forms the second contact area, allowing an angular movement of each bearing unit 28, 29 substantially about the pivot axis P, perpendicular to the sliding direction C and to the main plane of the opening 5. Finally, each bearing unit 28, 29 accommodates a single roller 30.

[0038] In the second embodiment of the invention shown in the figures 3A à 3C , a set of inclined slopes 48 replaces the oblong reserve 44 and tabs 50 replace the protrusions 46 provided in the first embodiment shown in the figures 2A et 2B Furthermore, the single base 22 is subdivided into at least two sections 23. In particular, the rolling units 28, 29 are provided to be clipped onto the base 22 and / or the sections 23, for example by clipping the set of inclined slopes 48 onto the tabs 50, and the connections formed at the level of the second contact zone 44 can be engaged or retracted without tools or a through axle, which makes the trolley 20 particularly simple to assemble and install.

[0039] In the third embodiment, which is not covered by the claims, the bearing units 28, 29 and the base 22 are provided to be made from flanges 52 connected by spacers 54. Furthermore, on the one hand, the support elements 26 are made by connecting rods 56 articulated on the base 22 and, on the other hand, the bearing areas 32 on the bearing units 28, 29 are formed by a bore 58.

[0040] In summary, whatever the embodiment chosen, it is possible to vary the number of rolling units 28, 29 between one unit and at least three units, while maintaining a single height adjustment point for all the rolling units 28, 29, and an angular adaptation of each rolling unit 28, 29 to the inclination between the opening and the rail 12.

Claims

1. A rolling device for a sliding leaf (4) of a joinery (0), preferably for a sliding leaf of the door, window or similar type, said sliding leaf (4) being able to be moved along a sliding direction (C), said rolling device (10) comprising at least one carriage (20) comprising a base (22) provided with fastening means (24) allowing fastening the carriage (20) to a profile (6) of said leaf (4) defining the lower cross member of said leaf (4) and provided with at least two bearing elements (26) having at least one arched surface (27), and at least two rolling units (28, 29) each connected to the base (22) and provided with one single rolling wheel (30) mounted so as to rotate freely about an axis of rotation (R) as well as a bearing zone (32) bearing against one of the bearing elements (26), a first rolling unit (28) among the at least two rolling units (28, 29) being coupled to a second rolling unit (29) among the at least two rolling units (28, 29) so as to form a first mechanical connection (34), connecting the first rolling unit (28) to the second rolling unit (29), and having a degree of freedom allowing tilting of the first rolling unit (28) relative to the second rolling unit (29) about a pivot axis (P), the pivot axis (P) preferably extending in a direction that is parallel to the axis of rotation (R) and / or orthogonal to the sliding direction (C), characterised in that the first rolling unit (28) has at least one oblong reserve (44), inclined with respect to the sliding direction (C), and accommodating a excrescence (46) connected to the base (22).

2. A rolling device for a sliding leaf (4) of a joinery (0), preferably for a sliding leaf of the door, window or similar type, said sliding leaf (4) being able to be moved along a sliding direction (C), said rolling device (10) comprising at least one carriage (20) comprising a base (22) provided with fastening means (24) allowing fastening the carriage (20) to a profile (6) of said leaf (4) defining the lower cross member of said leaf (4) and provided with at least two bearing elements (26) having at least one arched surface (27), and at least two rolling units (28, 29) each connected to the base (22) and provided with one single rolling wheel (30) mounted so as to rotate freely about an axis of rotation (R) as well as a bearing zone (32) bearing against one among the bearing elements (26), a first rolling unit (28) among the at least two rolling units (28, 29) being coupled to a second rolling unit (29) among the at least two rolling units (28, 29) so as to form a first mechanical connection (34), connecting the first rolling unit (28) to the second rolling unit (29), and having a degree of freedom allowing tilting of the first rolling unit (28) relative to the second rolling unit (29) about a pivot axis (P), the pivot axis (P) preferably extending in a direction that is parallel to the axis of rotation (R) and / or orthogonal to the sliding direction (C), characterised in that the first rolling unit (28) has a set of slopes (48), inclined with respect to the sliding direction (C), and accommodating tabs (50) connected to the base (22).

3. The rolling device according to any one of claims 1 or 2, characterised in that the rolling units (28, 29) are aligned behind each other along a direction that is essentially parallel to the sliding direction (C) and / or orthogonal to the axis of rotation (R) and / or orthogonal to the pivot axis (P).

4. The rolling device according to any one of claims 1 to 3, characterised in that the bearing zone (32) abuts against one of the bearing elements (26) to form a second mechanical connection (36) having at least one degree of freedom.

5. The rolling device according to any one of claims 1 to 4, characterised in that the carriage (20) comprises an adjustment element (38) for adjusting the gap between the base (22) and the rolling units (28, 29) in a first adjustment direction that is parallel to the sliding direction (C) and / or a second adjustment direction that is orthogonal to the sliding direction (C) and / or orthogonal to the axis of rotation (R).

6. The rolling device according to any one of claims 1 to 5, characterised in that the bearing zone (32) abuts against one of the bearing elements (26) independently of an inclination of the rolling unit (28, 29) provided with this bearing zone (32).

7. The rolling device according to any one of claims 1 to 6, characterised in that the bearing zone (32) has at least one arched surface (27).

8. The rolling device according to any one of claims 1 to 7, characterised in that the base (22) comprises a plurality of segments (23) connected to each other, at least two of the segments (23) among the plurality of segments (23) each being provided with one of the bearing elements (26).

9. A joinery comprising a sliding leaf (5), preferably a sliding leaf of the door, window or similar type, comprising at least one profile (6) defining the lower cross member of said leaf (5) and a rolling device (10) according to any one of claims 1 to 8, the means for fastening (24) the base (22) of the carriage (20) of the rolling device (10) being fastened to the profile (6).

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