Conveyor roller fixing device

Abstract

TITLE: Conveyor Roller Fixing Device A device for fixing a mounting shaft (21) of a conveyor roller (2) (10) onto a profile (3), the device comprising: a plate (4) including: an opening (42) for the passage of the mounting shaft (21), a first locking surface (43) for cooperating with the mounting shaft, a first clamping orifice (44), a clamping member (5) including: a second locking surface (53) opposite the first locking surface (43) cooperating with the mounting shaft (21), a second clamping orifice (54), a clamping member (6) passing through the plate (4), the clamping member (5) and the profile (3) via their clamping orifices (34, 44, 54), a ramp of the plate (4) or of the member (5) inducing a rapprochement of the two locking surfaces (43, 53) to lock the shaft assembly (21). Figure 7

Description

Title of the invention: Device for fixing a conveyor roller technical field

[0001] The scope of this disclosure is that of conveyors, in particular conveyors present in order preparation warehouses. Previous technique

[0002] For transporting orders, roller conveyors are known to be used. Generally, the conveyors comprise a structure including two lateral profiles, on which cylindrical portions of rollers are mounted to rotate so as to advance the orders. The rollers are typically arranged parallel to each other, positioned between the profiles, each cylindrical portion pivoting around a mounting shaft fixed to the profiles. Distal ends of the mounting shaft therefore protrude from the two longitudinal ends of each cylindrical portion and are fixed respectively to the two profiles, entering through receiving openings provided in the profiles.

[0003] The receiving openings can be designed to have a shape complementary to that of the roller mounting shafts, which can be, for example, hexagonal, so as to prevent the rotation of the mounting shafts on the profiles.

[0004] However, when the rollers are rotating, the repeated friction of the roller mounting shafts in the receiving openings leads to wear and deformation of said receiving openings. This can create a risk that the mounting shafts will no longer be held securely in place. Therefore, there is a need to more permanently lock the rotation of the mounting shafts through their receiving openings in the profiles, in order to prevent unwanted movements and vibrations, or even roller malfunctions.

[0005] A conveyor roller fastening device comprising three retaining panels and a fastening means is known from US patent 7588135. The retaining panels each have an opening with a shape complementary to that of the roller mounting shaft and are threaded one by one onto said shaft, against a conveyor profile. Each panel further comprises a through-hole that must be aligned to allow the fastening means to pass through. To this end, the retaining panels comprise at least one pair of male-female counterforms so that adjacent panels cooperate with each other. In a pair of adjacent support panels, the distance between the male-female counterform and the mounting hole of one support panel in one pair of adjacent panels is different from the distance between the male-female counterform and the mounting hole of the other support panel in the pair of adjacent panels. This ensures that the three support panels align when mounted together, butting against different sections of the mounting shaft. The fastener is mounted through the three mounting holes and through a hole in the profile.

[0006] A conveyor roller fastening device is also known from document JP5224598. This device essentially comprises a fastening means, a nut in two symmetrical parts of slightly frustoconical shape, and two retaining plates, also symmetrical, each having a frustoconical recess adapted to receive one part of the nut. The nut and the retaining plates are configured to receive the mounting shaft of the conveyor roller. The fastening means is configured to fix the fastening device to the conveyor profile and also allows the two retaining plates, between which the nut is positioned, to be tightened or loosened. When mounted but not tightened, the two retaining plates allow the nut a certain degree of freedom of movement, in particular angular rotation about a vertical axis. When tightened, the two retaining plates secure the nut.

[0007] However, these solutions have drawbacks. In particular, they require assembling numerous parts and are therefore complex to install. This complexity can directly impact the conveyor assembly cost and the reliability of the roller's retention on the profile. Indeed, the number of parts in the device multiplies the risk of assembly play due to manufacturing variations in each part, and this can result in detrimental play that may cause vibrations in the conveyor.

[0008] The purpose of this disclosure is therefore to mitigate at least in part the disadvantages of the prior art mentioned above. Summary

[0009] According to a first aspect, the objectives mentioned above are achieved in particular by a device for fixing a conveyor roller onto a profile, the roller comprising a cylindrical portion and a mounting shaft extending projecting from a side of the cylindrical portion, the mounting shaft comprising a distal end passing through the profile via a receiving opening, the fixing device comprising: - a turntable, comprising: • a rear surface configured to rest against the profile, • an opening configured to allow passage of the distal end of the roller mounting shaft, • a first blocking surface defining a portion of a contour of the opening, the first blocking surface being configured to cooperate with a first part of the radial outer surface of the roller mounting shaft, • a first clamping hole passing through the plate and opening onto the rear surface, - a clamping piece, intended to be positioned in the plate, and comprising: • a second locking surface opposite the first locking surface of the plate, the second locking surface being configured to cooperate with a second part of the radial outer surface of the roller mounting shaft, said second part being opposite the first part of the radial outer surface of the mounting shaft, • a second clamping hole facing the first clamping hole of the plate, - a clamping element configured to pass through both the second clamping orifice of the clamping piece, the first clamping orifice of the plate, and a third clamping orifice of the profile, the clamping element allowing the plate and the clamping piece to be brought together in a direction of approach, one of the plate or clamping part comprising an inclined ramp, and the other comprising a sliding portion configured to cooperate with the ramp, so that clamping the clamping member induces an approach of the second locking surface towards the first locking surface of the plate in a clamping direction until the roller mounting shaft is locked.

[0010] Thus, the proposed solution has, among other advantages, the benefit of being easier and faster to mount on the profile than existing solutions. Indeed, the device is easily assembled since it comprises only two parts, fixed to one another and tightened by the clamping element, such as a clamping screw. In particular, the clamping element, specifically the clamping screw, performs both the function of retaining the device on the profile and the function of clamping the roller mounting shaft. The fastening device can therefore comprise a single clamping element, specifically a single clamping screw.

[0011] Moreover, the proposed solution demonstrates greater reliability. The device ensures that the roller mounting shaft is locked without adjustment. additional. Indeed, the cooperation between the ramp and the sliding portion achieves a clamping operation which reduces the probability of play forming at the roller support.

[0012] Furthermore, when the end of the roller that one seeks to fix is ​​equipped with a cable having a connector, the opening provided in the plate makes it possible to guarantee the passage of the cable and the connector without damaging them.

[0013] In addition, the device according to this disclosure is particularly inexpensive to produce, due to its design consisting of only two parts.

[0014] Furthermore, it becomes possible to tighten the mounting shaft and secure the device using the same fastener, which may be a single fastener. The assembly time of such a fastening device, comprising, according to one embodiment, a single fastener, in particular a single clamping screw, is advantageously reduced.

[0015] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0016] According to one example, the clamping member includes a clamping screw cooperating with a nut to bring the plate and the clamping piece closer together, the ramp being inclined relative to the axis of the clamping screw.

[0017] According to one example, the ramp forms an angle with the approach direction of between 3° and 22°, preferably the angle of the ramp is substantially equal to 5° or substantially equal to 20°.

[0018] According to one example, the approach direction is perpendicular to the clamping direction.

[0019] According to one example, a portion of the opening of the plate is partially obstructed by the clamping piece when tightening the clamping member, so that once the tightening has been carried out, the portion of the opening obstructed represents at least 50% of the area of ​​the opening.

[0020] According to one example, the plate includes two side guide walls, extending at least partially between the first locking surface and either of the ramp or sliding portion according to the clamping direction, the side guide walls being configured to cooperate with lateral sides of the clamping part.

[0021] According to one example, the two side guide walls each comprise a guide rib having a stop surface extending perpendicularly to the approach direction, a complementary stop surface of the clamping piece being configured to cooperate with the stop surface of the two guide ribs of the plate in order to guide the clamping piece and prevent it from moving away from the profile when tightening the clamping screw.

[0022] According to one example, the plate has a lateral passage through one of the lateral guide walls, the clamping piece including a notch positioned so that the lateral passage of the plate opens onto said notch of the clamping piece when the clamping member, such as the clamping screw, is tightened.

[0023] According to one example, the roller mounting shaft has a hexagonal cross-section, the first blocking surface and the second blocking surface each comprising two adjacent opposite faces inclined relative to each other.

[0024] According to one example, the first locking surface and the second locking surface each comprise a groove cut into each of the plate and the clamping piece, each groove being positioned so that it extends in place of an edge common to the two adjacent faces.

[0025] According to one example, the plate and the clamping piece are made by injection of a metal or a metal alloy, in particular an alloy comprising at least one metal selected from zinc, aluminum, magnesium or copper.

[0026] According to a second aspect, the present disclosure also relates to a conveyor comprising a profile and a roller comprising a cylindrical portion and a mounting shaft extending projecting from a side of the cylindrical portion, the mounting shaft comprising a distal end passing through the profile by a receiving opening, the roller being fixed to the profile by a fastening device as described above.

[0027] According to one example, a channel opens from the distal end of the roller mounting shaft, the roller comprising an electrical cable having a connector exiting outside the roller through said channel.

[0028] According to one example, the plate and the clamping piece extend lengthwise in a vertical direction, the first part of the mounting shaft being an upper portion of the mounting shaft on which rests by gravity the first locking surface of the plate when it is positioned against the profile, and the second part of the mounting shaft being a lower portion of the mounting shaft, the clamping direction being in the vertical direction.

[0029] According to a third aspect, the present disclosure also relates to a method of fixing a conveyor roller onto a profile with a fixing device as described above, the roller comprising a cylindrical portion and a mounting shaft extending projecting from a side of the cylindrical portion, the mounting shaft comprising a distal end passing through the profile via a receiving opening, the method comprising: - the passage of the roller mounting shaft through the profile receiving opening, - the positioning of the plate so that the first locking surface cooperates with a first part of the radial outer surface of the roller mounting shaft, and so that the rear surface of the plate is pressed against the profile, and so that the first clamping hole is positioned opposite the third clamping hole of the profile, - the mounting of the clamping piece on the plate, positioning the clamping piece so that one of the ramp or sliding portion cooperates with the other of the ramp or sliding portion, and so that the second clamping orifice of the clamping piece is opposite the first clamping orifice of the plate, and so that the second locking surface is opposite the first locking surface in such a way that the roller mounting shaft extends between the first locking surface and the second locking surface of the device, - the passage of a clamping screw through the first, second and third clamping holes, - the tightening of the clamping element, causing the clamping part to approach the plate so that a relative sliding between the sliding portion and the ramp induces a movement of the second locking surface towards the first locking surface of the plate until the roller mounting shaft is blocked.

[0030] According to one example, the plate of the device comprises two lateral guide walls, extending at least partially between the first blocking surface and one or the other of the ramp or sliding portion, the lateral guide walls being configured to cooperate with lateral sides of the clamping piece, the method comprising, when mounting the clamping piece on the plate, inserting the clamping piece between the two lateral guide walls of the plate.

[0031] According to one example, the two side guide walls each comprise a guide rib having a stop surface extending parallel to the rear surface of the plate, a complementary stop surface of the clamping piece being configured to cooperate with the stop surface of the two guide ribs of the plate, the method comprising, when inserting the guide piece between the side guide walls, the passage of the complementary stop surface under the stop surface of the guide ribs of the plate. Brief description of the drawings

[0032] Other features, details and advantages will become apparent upon reading the detailed description below, and upon analysis of the accompanying drawings, on which:

[0033] [Fig.1] shows on a first view IA a schematic representation of a conveyor according to an example, then on a view IB a closer view of a mounting shaft seen from outside the conveyor according to an example, corresponding to the area circled in dotted lines on view IA.

[0034] [Fig.2] shows a schematic front view representation of an example of fastening device as described in this disclosure, viewed from outside the profile,

[0035] [Fig.3] shows a schematic representation of a front view of a plate of the fastening device of the [Fig.2],

[0036] [Fig.4] shows a schematic representation of a roller, a profile and the fixing device of the [Fig.2] cross-sectional view along a plane including the roller axis,

[0037] [Fig. 5] shows a schematic representation of a plate and a part of tightening of the fastening device of [Fig.2], cross-sectional view along plane AA in a first view 5A and front view in a second view 5B,

[0038] [Fig.6] shows a schematic perspective representation of a plate and a clamping piece of the fastening device [Fig.2], the clamping piece being inclined in order to be inserted into the plate,

[0039] [Fig.7] shows a schematic perspective representation, viewed from the outside of the profile, on which we can see the assembly of the different parts that make up the fixing device of the [Fig.2],

[0040] [Fig.8] shows two schematic representations of a plate and a part of tightening similar to those in views 5A and 5B of [Fig. 5], which shows the forces involved in tightening the mounting shaft and rotating the roller, as illustrated by examples in this disclosure,

[0041] [Fig.9] shows a schematic representation of the fastening device of the [Fig.2], cross-sectional view along a plane including the roller axis, the first view 9A showing an initial configuration at tightening of the fastening device, view 9B showing a configuration in a final state, when tightening is carried out, according to an example in this disclosure. Description of the implementation methods

[0042] The drawings and description below contain, essentially, elements of a definite nature. They may therefore not only serve to better explain this disclosure, but also contribute to its definition, if necessary.

[0043] In the various figures, the same reference numerals designate identical or similar elements. For the sake of brevity, only the elements that are useful for understanding the described embodiment are shown in the figures and are described in detail below.

[0044] In the following description, when reference is made to absolute positional qualifiers, such as "front," "back," "top," "bottom," "left," "right," etc., or relative positional qualifiers, such as "above," "below," "superior," "inferior," etc., or to orientational qualifiers, such as "horizontal," "vertical," etc., reference is made, unless otherwise specified, to the orientation of the figures. Furthermore, the term "approximately" is to be interpreted as indicating that the result obtained is as precise as the known method for measuring it.

[0045] Reference is now made to [Fig. 1].

[0046] Figure 1 shows a conveyor 10 on which a plurality of rollers 2 are mounted. The rollers 2 are mounted between two lateral profiles 3, fixed opposite each other. The profiles 3 are, for example, fixed to the ground (not shown) or to a fixed structure. Each roller 2 comprises a cylindrical portion 20 for allowing the goods to roll in a direction transverse to the rollers, within a volume located between the two profiles 3 and above the cylindrical portions 20 of the rollers 2. The cylindrical portion 20 is closed laterally by two lateral sides 22 (Fig. 4). In one configuration, these sides 22 extend substantially parallel to the profiles 3, and substantially perpendicular to the axis of the roller 2.

[0047] The rollers 2 each also include a mounting shaft 21, which extends projecting from both sides 22 of the cylindrical portion 20. Each roller 2 in particular includes a single mounting shaft 21 which passes through it along its entire length, and protrudes on each side of the roller, beyond these sides 22. In other examples, each end of the roller 2 is provided with a specific mounting shaft 21.

[0048] According to examples, the mounting shaft 21 includes a channel 23 from which a cable 25 with a connector 26 emerges. Such a connector is notably present in a motorized roller 2. Typically, a conveyor 10 may include one or more rollers 2 whose rotation is driven by an actuator housed in said roller 2. The conveyor may then include a set of belts, connected to the driven roller, and configured to transmit said rotation to the other non-motorized rollers.

[0049] In the case of a roller comprising a cable 25, the mounting shaft 21 may include a first distal end through which the cable does not pass, and a second distal end through which a channel is drilled to allow the cable 25 to pass. Said cable 25 is typically connected to another connector outside the roller 2, for example at a profile 3. In the example shown in [Fig. 1], a cable 25 is present at a distal end 24 of the mounting shaft 21 and is particularly visible in Figure 1B. In one example, the channel 23 runs the entire length of the mounting shaft 21, and thus also opens on the side from which the cable does not exit. In another example, the channel 23 does not extend on the side that is not traversed by a cable, and in this case the distal end of the mounting shaft 21 is solid.

[0050] For the sake of brevity, unless otherwise stated, only one end of a cylinder is generally described, and it is understood that the other end has the same characteristics, for example, by symmetry about a median transverse plane of the cylindrical portion. Only one cylinder is generally described, but it is understood that, according to examples, the conveyor also includes other rollers having the same characteristics.

[0051] The mounting shaft 21 typically comprises a distal end 24 passing through the profile 3 via a receiving opening 31 formed in the profile 3. In one example, and particularly as shown in the figures, the mounting shaft is typically hexagonal, and consequently, the receiving opening 31 has a hexagonal shape, at least over a major part of its circumference. This complementary shape provides an initial resistance to the rotation of the mounting shaft 21 relative to the profile 3. Other shapes for the receiving opening 31 and the mounting shaft 21 can be considered, and this initial resistance to rotation is optional.

[0052] According to examples, and in cases where one of the two ends of the mounting shaft 21 allows a cable 25 and its connector 26 to exit, the receiving opening 31 may be configured to allow the connector 26 and the cable 25 to pass through. In particular, the receiving opening 31 has a dimension greater than that of the connector 26, which is typically larger than one diameter of the cable 25. According to one particular example, the receiving opening 31 is hexagonal over a major part of its contour, then has a rectangular portion so as to enlarge the surface area formed by the opening while allowing a first rotational lock of the mounting shaft 21.

[0053] Once mounted on the profile 3, the cylindrical portion 20 of the roller 2 extends from a first side of the profile oriented towards the inside of the conveyor 10, and the distal end 24 of the mounting shaft 21 extends from a second side of the profile, oriented towards the outside of the conveyor 10. In cases where said end 24 is traversed by a cable, this cable extends from an outside side of the profile 3.

[0054] According to examples, the distal end 24 of the mounting shaft 21 can extend to a distance of between 10 and 50 mm from the profile.

[0055] According to this disclosure, the roller(s) are held on the profiles 3 by a fastening device 1, an example of which is shown in particular in [Fig.2].

[0056] The fastening device 1, according to this disclosure, comprises two main parts: a plate 4 and a clamping piece 5. Each of the plate 4 or the clamping piece 5 can be monobloc, that is to say, in one piece.

[0057] The plate 4 and the clamping piece 5 can each be made by injection molding a metal or a metal alloy. In particular, the metal or metal alloy comprises a metal selected from zinc, aluminum, magnesium, copper, or a combination thereof. It is also possible for the plate 4 and / or the clamping piece 5 to be made of a plastic material.

[0058] As illustrated in [Fig.4], the plate 4 firstly comprises a rear surface 41 configured to rest against the profile 3. Generally, the rear surface 41 of the plate 4 is pressed against the profile on an outside side of the profile 3.

[0059] The plate 4 further includes an opening 42 configured to allow the passage of the distal end 24 of the mounting shaft 21 of the roller 2. The opening passes through the plate completely, in particular from front to back, and opens at the rear of the plate through the rear surface 4L

[0060] Depending on the case, a cable 25 equipped with a connector 26 can pass through the channel 23 of the mounting shaft 21 and in this case, the opening 42 is specifically sized to allow the passage of the connector 26. An example of a fastening device 1 is shown in [Fig.3], on which the opening 42 is particularly visible.

[0061] The plate 4 also includes a first locking surface 43 defining a limit of the opening 42, preferably an upper limit of the opening 42 when the plate is positioned vertically. The first locking surface 43 has a shape that allows it to cooperate with a radial outer surface 210 of the mounting shaft 21.

[0062] Generally, the first locking surface 43 is configured to cooperate with a first part 211 of the radial outer surface 210 of the mounting shaft 21 of the roller 2.

[0063] According to one example, this first part 211 is an upper part of the mounting shaft 21, particularly according to the example shown in [Fig. 7]. In particular, the mounting shaft 21 may comprise a first upper part and a second lower part, delimited by a horizontal median plane of the mounting shaft 21. The first upper part is oriented upwards when the conveyor 10 is placed on the ground in its normal operating position, and the second lower part is oriented downwards. In such a configuration, the first blocking surface 43 is configured to cooperate, for example by complementary shape, with the first upper part of the mounting shaft 21.

[0064] Furthermore, the plate 4 includes a first clamping orifice 44 passing through the plate 4 and opening onto the rear surface 4L. By way of example, the first clamping orifice 44 may be a portion of the opening 42. In other words, the opening 42 may extend to include said first clamping orifice 44. In other words, According to examples, the first clamping orifice 44 and the opening 42 are not separated by the material that constitutes the plate 4 and form a single opening.

[0065] According to a particular example, and especially as shown in [Fig. 3] and 7, the plate 4 may include a base 421, on which and through which the first clamping hole 44 is provided. In this case, the opening 42 and the first clamping hole 44 are separate. The base 421 can facilitate the positioning of the clamping piece 5 in the plate by preventing the clamping piece from passing through the opening 42 of the plate.

[0066] In addition to the plate 4, the device 1 includes a clamping piece 5. This clamping piece 5 is typically separate from the plate 4.

[0067] The clamping piece 5 is intended to be positioned on or in the plate 4. To this end, the plate 4 may include a housing dimensioned to accommodate the clamping piece 5. According to one example, such a housing may include two lateral guide walls 45.1 and 45.2, which laterally delimit the housing of the clamping piece 5. The clamping piece may then have lateral sides 55.1, 55.2, spaced substantially apart by a distance slightly less than that which separates the two lateral guide walls of the plate 4.

[0068] According to one example, the side guide walls 45.1, 45.2 extend on either side of the opening 42.

[0069] The clamping piece 5 includes a second locking surface 53 which, when the clamping piece 5 is positioned in the plate 4, is located opposite the first locking surface 43 of the plate 4. Indeed, the second locking surface 53 is configured to cooperate with a second portion 212 of the radial outer surface 210 of the mounting shaft 21 of the roller 2, said second portion 212 being opposite the first portion 211 of the radial outer surface 210 of the mounting shaft 21. By "opposite," it is understood that the first and second portions 211, 212 of the mounting shaft 21 are positioned such that the forces exerted on them by the first and second locking surfaces 43, 53 cancel each other out and hold the mounting shaft "sandwiched" between the plate 4 and the clamping piece 5.It is therefore accepted that the first blocking surface and the second blocking surface may not be of the same shape, nor even symmetrical to each other with respect to a median horizontal plane.

[0070] According to one example, the plate 4 may have a thickness less than the distance by which the mounting shaft 21 protrudes from the profile 3, particularly at the first locking surface 43. In this way, when the plate 4 is pressed against the profile, and the mounting shaft 21 passes through the opening 42, a portion of the mounting shaft 21 extends beyond the plate towards the outside of the conveyor 10. In this way, it is guaranteed that a sufficient portion of the mounting shaft is engaged between the locking surfaces 43, 53 of the plate 4 and the clamping piece 5.

[0071] According to one example, this second part 212 is a lower part of the mounting shaft 21. In particular, when the first locking surface 43 is configured to cooperate with an upper part of the mounting shaft 21, then the second locking surface 53 of the clamping part is configured to cooperate with a lower part of the mounting shaft 21. In this way, the forces induced by these surfaces on the mounting shaft 21 cancel each other out during clamping to achieve the locking of the mounting shaft 21, for example in a manner comparable to that of a chuck.

[0072] According to one example, the first locking surface 43 and the second locking surface 53 together have at least three points of contact with the mounting shaft 21, so as to guarantee that the mounting shaft 21 is locked in all directions. In particular, and as in the example shown in the figures, they have four points of contact, consisting of four surfaces bearing on the shaft. Other configurations are of course possible.

[0073] The clamping piece 5 further includes a second clamping orifice 54 passing through the clamping piece completely, typically from front to back. When the clamping piece 5 is positioned in the plate 4, the second clamping orifice 54 is configured to be positioned opposite the first clamping orifice 44 of the plate 4.

[0074] To this end, when the plate 4 includes side guide walls 45.1, 45.2 which laterally delimit the housing of the clamping part 5, the first clamping orifice 44 of the plate can be centered at an equal distance laterally from the two side guide walls 45.1, 45.2, as well as the second clamping orifice 54 can be centered so as to be positioned at an equal distance from the two lateral sides 55.1, 55.2 of the clamping part 5, to ensure alignment of the two orifices with respect to each other.

[0075] Furthermore, the fastening device 1 includes a clamping member 6 configured to pass through both the second clamping hole 54 of the clamping piece 5, the first clamping hole 44 of the plate 4, and a third clamping hole 34 of the profile 3. According to one example, and in particular as shown in the figures, the clamping member is inserted from an external side of the profile 3 so as to pass first through the clamping piece 5, then through the plate 4, and finally through the profile 3, until it emerges from an internal side of the profile 3. It is of course also possible to insert the clamping member 6 from an internal side of the profile 3. The clamping member 6 is configured to bring the clamping piece 5 and the plate 4 closer together in a direction of approach, in particular the direction of approach may be parallel to the direction of elongation of the mounting shaft 21.

[0076] The device according to the present disclosure is advantageous in particular in that it is both fixed to the profile and tightened by a single clamping member.

[0077] The term "clamping member" means any element or mechanism that brings two opposing surfaces together along a single through piece, for example, a rod. In an example of this disclosure, said clamping member 6 can be configured to bring a first clamping surface, for example, a screw head in contact with the clamping piece, closer to a second clamping surface, for example, a nut in contact with the profile 3, along the shank of the screw. According to this disclosure, the clamping member 6 can consist of a single piece (for example, a screw cooperating with a thread in the profile), or even of only two pieces (for example, a screw and a nut, or a quick-clamping mechanism comprising a rod with a stop and a rotating clamping head including an eccentric portion).

[0078] It is therefore possible to add, without departing from the scope of this disclosure, other components, for example fixing components to hold the plate 4 to the profile 3.

[0079] According to this disclosure, the clamping member 6 may comprise a single through-piece, penetrating the first, second, and third clamping orifices. The clamping member may comprise other parts cooperating with this single through-piece so as to form two surfaces approaching each other, thereby inducing a movement of the clamping member 5 towards the plate 4.

[0080] One of the plate 4 or the clamping piece 5 further includes an inclined ramp 8 enabling the approach of the clamping piece 5 towards the plate 4 to be accompanied by a translational movement of the clamping piece 5 towards the mounting shaft 21. To this end, the other of the plate or the clamping piece includes a sliding portion 9 configured to cooperate with the ramp 8, so that the clamping of the clamping member 6 induces an approach of the second locking surface 53 towards the first locking surface 43 of the plate 4 in a clamping direction until the mounting shaft 21 of the roller 2 is locked.

[0081] According to one example, the plate 4 remains stationary during the clamping action, the first locking surface 43 already being in contact with the mounting shaft 21. Indeed, in this case, it is the clamping piece 5 which is moved in translation along the direction of clamping, and only the second locking surface 53 moves by approaching the first locking surface 43 which remains stationary.

[0082] According to a configuration in which the plate extends vertically in length, the clamping direction is vertical, and the approach of the clamping part 5 relative to the plate 4 is horizontal, according to the direction of elongation of the shaft of assembly. This is particularly the case in the non-exhaustive examples shown in the figures.

[0083] When the clamping member includes a screw, or a rod passing through the clamping holes, the ramp is inclined with respect to the axis of the screw, or to the axis of the rod as appropriate.

[0084] According to an example, considering the "bottom" as being close to the profile 3, and the "top" as being at a distance from the profile 3 when the device is mounted on the conveyor 10, a high point of the ramp 8 is further from the second blocking surface 53 than a low point of the ramp 8, so that by sliding from a high point to a low point of the ramp 8 while approaching the plate 4, the clamping piece 5 also approaches the mounting shaft 21 of the roller 2, the second blocking surface 53 then approaching the first clamping surface 43 inducing a clamping force on the mounting shaft 21 taken "sandwiched" between the two.

[0085] According to examples, it is possible that the ramp 8 is a first ramp and that the sliding portion 9 includes a second ramp complementary to the first ramp 8. Such a configuration allows, in particular, for a greater tolerance for the dimensions of the plate and the clamping piece. The presence of a first ramp and a second complementary ramp can, in particular, reduce the contact pressure between these two parts and thus limit their deformation. Such an example is shown in the figures. In this case, the first ramp and the second ramp can have the same angle of inclination.

[0086] According to other examples, the sliding portion 9 can be an edge, a fillet or a chamfer, or any rounded part, which may have features useful for reducing friction between the two parts, for example a local reduction of the contact area or a suitable coating.

[0087] In one example, the ramp forms an angle α with the axis of the screw or rod of between 3° and 22°. Preferably, the angle of the ramp is approximately 5° or approximately 20°. Depending on the configuration, a smaller angle, for example 5°, may provide greater stability to the assembly, making it possible to maintain a satisfactory clamping force even after removing the clamping member 5. This may also make it more difficult to remove the clamping member, which could become jammed between the plate 4 and the mounting shaft 21. Conversely, a larger angle, for example 20°, may provide greater flexibility, making it easier to remove the clamping member 5 from the plate 4 once tightened. The angle α formed between the axis of the clamping member 6 and the ramp 8 is particularly visible in [Fig. 9], as an example.

[0088] Generally, the plate 4 includes a contour 420, at least a portion of which defines the opening 42. For example, this contour is rectangular. In the mounting position, the length of this contour can extend vertically, so that its width is measured horizontally. For example, its length is greater than its width; for instance, its length is at least twice its width.

[0089] According to one example, this contour 420 extends in projection perpendicularly to the rear surface 41 of the plate, and the interior of this contour 420 delimits a housing intended to accommodate the clamping piece 5. As described previously, according to one example, such a contour may have lateral guiding walls 45.1, 45.2, suitable for guiding the lateral sides 55.1, 55.2 of the clamping piece 5 in the clamping direction.

[0090] According to one configuration, the contour 420 may include a small upper side, which includes the first locking surface 43, two large lateral sides, which may optionally include guide side walls 45.1, 4.2, and a small lower side typically including one or the other of the ramp 8 or the sliding portion 9. According to this configuration, when positioned, the plate 4 may be suspended vertically on the mounting shaft 21 by the first locking surface 43, and extend naturally downwards by gravity, so that the first clamping hole 44 is naturally opposite the third clamping hole 34 of the profile 3, which is provided to be aligned vertically with the receiving opening of the mounting shaft 21.In this way, an operator mounting such a plate is not forced to hold the plate 4 in position with his hand on the profile 3, for example when approaching the clamping part 5.

[0091] Other configurations are of course possible in which the plate extends, for example, horizontally relative to the mounting shaft 21, or, for example, vertically upwards. The plate 4 may also have a general shape other than a rectangular one.

[0092] According to one example, the clamping piece 5 extends lengthwise in a generally vertically oriented rectangular shape, having a small lower side on which is formed the other of the ramp 8 or the sliding portion 9, two large lateral sides configured where appropriate to cooperate with guide lateral walls 45.1, 45.2 of the plate, and a small upper side on which is formed the second locking surface 53. More generally, according to examples, regardless of the general shape of the clamping piece, the ramp 8 or sliding portion 9 carried by the clamping piece 5 is located on a side opposite to that which has the second locking surface 53.

[0093] Furthermore, the ramp or sliding portion is located at a distance of between 25 mm and 85 mm from the second blocking surface 53.

[0094] According to examples, the second clamping orifice 54 is provided, in the clamping piece 5, between the second locking surface 53 and that of the ramp 8 or of the sliding portion 9 which is carried by the clamping piece 5.

[0095] According to one example, the second clamping orifice 54, a median plane of one of the ramp 8 or the sliding portion 9, and a median plane of the second locking surface 53 are aligned along the clamping direction.

[0096] According to one example, the second clamping orifice 54 is positioned on the clamping piece near the ramp 8 or the sliding portion 9, in the sense that it is closer to the ramp 8 or the sliding portion 9 than to the second locking surface 53.

[0097] A similar configuration is possible for the plate 4, in which the first clamping orifice 44 can be provided, in the plate 4, between the first locking surface 43 and that of the ramp 8 or of the sliding portion 9 which is carried by the plate 4.

[0098] According to one example, the first clamping orifice 44, a median plane of the other of the ramp 8 or of the sliding portion 9, and a median plane of the first locking surface 43 are aligned along the clamping direction.

[0099] According to one example, in particular as shown in [Fig. 6], the plate 4 comprises two lateral guide walls 45.1, 45.2 extending at least partially between the first locking surface 43 and either the ramp 8 or the sliding portion 9, depending on the clamping direction. The lateral guide walls 45.1, 45.2 can then cooperate with lateral sides 55.1, 55.2 of the clamping piece 5.

[0100] According to one example, the first clamping orifice 44 is positioned on the plate 4 near the ramp 8 or the sliding portion 9, in the sense that it is closer to the ramp 8 or the sliding portion 9 than to the first locking surface 43.

[0101] According to one example, concerning either of the plate 4 or the clamping piece 5, the ramp 8 or the sliding portion 9 is provided at a distance of between 25 and 85 mm from the first or second locking surface 43, 53. According to one example, concerning either of the plate 4 or the clamping piece 5, the first or second clamping orifice 44, 54 is provided at a distance of less than 30 mm from the ramp 8 or the sliding portion 9.

[0102] According to one example, the two side guide walls 45.1, 45.2 each comprise a guide rib 46.1, 46.2 having a stop surface 47 extending perpendicularly to the axis of the clamping screw 6 parallel to the rear surface 41 of the plate 4, a complementary stop surface 57 of the part clamping 5 being configured to cooperate with the stop surface 47 of the two guide ribs 46.1, 46.2 of the plate 4 in order to guide the clamping piece 5 and to prevent it from moving away from the profile 3 when tightening the clamping screw 6.

[0103] According to one example, the stop surface 47 of each of the guide ribs 46.1, 46.2 of the plate 4 is oriented downwards, i.e. towards the profile 3, while the complementary stop surface 57 of the clamping piece 5 is oriented upwards, i.e. towards the outside of the conveyor 10. Their complementarity allows in particular for the clamping piece 5 to be held in the plate 4.

[0104] In particular, the plate 4 may have a lateral passage 48 that can pass through the contour 420, and / or one of the guide side walls 45.1, 45.2. In this case, the clamping member 5 may include a notch 58 positioned so that the lateral passage 48 of the plate 4 opens onto said notch 58 of the clamping member 5 when the clamping member 6 is tightened. In this way, a tool can be used to reach the notch 58 of the clamping member 5, made accessible by the lateral passage 48, so as to dislodge the clamping member 5, preferably after loosening the clamping member 6. According to one example, the clamping device 1 includes two lateral passages 48 and two notches 58.

[0105] According to one example, and in particular as shown in [Fig. 3], in which the plate 4 has a base 421, the base can be used to stiffen the plate 4 by connecting the two large lateral sides and the lower side of the contour 420 of the plate. According to one example, a low point of the ramp forms a lower edge of the base 421.

[0106] According to the example shown in particular in figures 4, 7 and 9, the clamping element is a screw in cooperation with a nut.

[0107] In one example, the nut is an added part provided with a thread. In other examples, the nut is a thread formed in the orifice of the profile 3, or a thread formed in a part fixed to the profile, for example welded to the profile.

[0108] Generally, the nut 7 is positioned on one side facing inwards towards the profile 3 and the screw 6 is inserted from a second side facing outwards towards the profile. That said, it is not impossible to proceed in the reverse manner.

[0109] According to one example, the first clamping hole 44 of the plate 4 and the second clamping hole 54 of the clamping piece 5 are oblong. In a configuration where the clamping device 1 extends vertically, the holes 44, 54 have a length in the vertical direction that is greater than their width. Generally, the holes 44, 54 are oblong in the clamping direction.

[0110] According to one example, the first clamping orifice 44 of the plate has a greater length than that of the clamping part 5 in the direction of clamping, so as to absorb the slippage of the clamping part 5 along the plate 4 when tightening the clamping member 6.

[0111] According to one example, a portion of the opening 42 of the plate 4 is partially obstructed by the clamping piece 5 when the clamping member 6 is tightened, so that once tightening is complete, the area of ​​the obstructed portion of the opening 42 represents at least 50% of the area of ​​the opening 42. Such a configuration makes it possible to design a particularly large opening 42, so as to guarantee the passage of a connector 26 if the roller 2 has a cable 25.

[0112] According to one example, in particular in which the plate 4 extends vertically, the mounting shaft 21 occupies an upper portion of the opening 42, and a lower portion of the opening 42 is obstructed by the clamping piece 5. In this case, the lower portion is larger than the upper portion of the opening 42.

[0113] In a particular example, the plate 4 includes a key 49 extending transversely across the plate 4, for example, across the width of the plate in a horizontal direction. The key 49 may be formed from the material of the plate 4 and extend beyond its rear surface 41. The key 49 is thus configured to cooperate with a slot 39 formed in the profile 3 when the plate 4 is mounted against the profile 3. In fact, the slot 39 may have a shape complementary to the key 49, typically a rectangular punch, creating an opening slightly larger than the key 49, so that the key 49 can enter the slot 39 and provide additional support for the plate 4 against the profile 3. Such a key 49 can, in particular, help to hold the fastening device 1 in position when the clamping member 6 is tightened.

[0114] According to one example, the first blocking surface 43 and the second blocking surface 53 each comprise two adjacent opposite faces 431, 432, 531, 532. Such a configuration is particularly visible in [Fig. 5] according to one example.

[0115] According to other examples, one of the first locking surfaces 43 and the second locking surface 53 comprises a horizontal face, and the other comprises two inclined faces. Regardless of their arrangement, the faces make surface contact with the mounting shaft 21, which distributes the forces and minimizes wear on the shaft 21 that could be caused by the clamping force.

[0116] According to other examples, the blocking surfaces 43, 53 do not include flats, but protruding edges or edges with a fillet, configured to provide linear support on the mounting shaft 21. The bearing surfaces thus formed extend in a direction parallel to the axis of the roller 2. Such a configuration allows the fastening device 1 to cooperate with various shapes of mounting shaft 21, for example with a cylindrical shaft of revolution.

[0117] According to one configuration, in particular in which the plate 4 extends vertically, the first blocking surface 43 comprises a vertex, forming an angle between two inclined faces extending laterally downwards from said vertex. From this In this way, the two inclined faces form the upper portion of a hexagon and can cooperate with a hexagonal mounting shaft. Furthermore, this configuration has the advantage of achieving natural centering of the plate 4 on the conveyor 10, the first locking surface 43 immediately positioning itself centered on the mounting shaft 21 through cooperation between the shapes of the two parts.

[0118] According to a particular example, the first locking surface 43 and the second locking surface 53 each comprise a groove 433, 533 cut into each of the plate 4 and the clamping piece 5 in place of the common edge of the two adjacent inclined faces 431, 432, 531, 532. In particular, the groove may have a rounded bottom. Such a groove makes it possible to minimize stress concentrations at the angle formed by the two faces.

[0119] Reference is now made to [Fig. 7], which shows in particular an example of an assembly method according to this disclosure. The method comprises, firstly, the passage of the mounting shaft 21 of the roller 2 through the receiving opening 31 of the profile. As described previously, the shape of the receiving opening 31 and the mounting shaft 21 may be complementary, allowing for initial rotational locking of the shaft and potentially also guiding the shaft into a specific angular position. In one example, the shape of the receiving opening 31 is configured to guide the mounting shaft 21 such that its upper portion has a vertex connecting two inclined planes extending laterally downwards, as is the case in the example shown in [Fig. 7].

[0120] After the mounting shaft 21 has passed through, the plate 4 is positioned so that the first locking surface 43 cooperates with a first part 211 of the radial outer surface 210 of the mounting shaft 21 of the roller 2. Furthermore, the rear surface 41 of the plate is pressed against the profile 3. The plate 4 is also positioned so that the first clamping hole 44 is positioned opposite the third clamping hole 34 of the profile 3. According to an example described previously, the first part 211 of the radial outer surface 210 of the mounting shaft 21 is an upper portion of the shaft, and the plate 4 is thus suspended on the shaft 21, so as to extend vertically downwards. According to such a configuration, the plate naturally positions itself, by gravity, so that the first clamping hole 44 falls opposite the third clamping hole 34.To this end, the third clamping orifice 34 is provided in the profile 3 so that it is vertically aligned under the receiving opening 31.

[0121] Following the positioning of the plate, or prior to its positioning, the clamping piece 5 is mounted on or in the plate 4, so that one of the ramp 8 or the sliding portion 9 cooperates with the other of the ramp 8 or the portion of sliding 9. The clamping piece 5 is also positioned so that the second clamping hole 54 is opposite the first clamping hole 44 of the plate 4, and so that the second locking surface 53 is opposite the first locking surface 43. In this way, the mounting shaft 21 of the roller 2 extends between the first locking surface 43 and the second locking surface 53 of the fastening device.

[0122] Once the plate 4 and the clamping piece 5 are mounted on the conveyor, the clamping member 6 is passed, preferably from an outside side of the profile 3, through the second clamping orifice 54, then the first clamping orifice 44, and finally the third clamping orifice 34. A passage in the reverse order is possible if the clamping member 6 is inserted from an inside side of the profile 3.

[0123] The clamping member 6 is then tightened, causing the clamping piece 5 to move closer to the plate 4 such that relative sliding between the sliding portion 9 and the ramp 8 induces the second locking surface 53 to move closer to the first locking surface 43 of the plate 4 until the mounting shaft 21 of the roller 2 is locked. The distribution of forces and the effect of the interaction between the ramp 8 and the sliding portion 9 are shown in particular in Figure 8a. The resisting torque induced by the clamping of the two locking surfaces 43, 53 on the mounting shaft 21 is shown in Figure 8b.

[0124] During this clamping action, the clamping member 6 has an initial length "Li" between, on the one hand, the outer contact surface 61 between the clamping member 6 and the front surface 59.1 of the clamping part 5, and on the other hand, the inner contact surface 71 between the clamping member 6 and the inner side of the profile 3; and there is a non-zero initial clearance "Ji" between the second locking surface 53 and the mounting shaft 21, as shown, by way of example, in view 9a of [Fig. 9]. The clamping action reduces the initial length of the clamping member 6 to a final length "Lf". The length of the clamping member 6 thus changes from "Li" to "Lf", with Lf = Li.The cooperation between the ramp 8 and the sliding portion 9 allows the second locking surface 53 to be brought closer to the mounting shaft 21 until the play between these two elements is eliminated, which, at the end of tightening, are tightened in contact with each other, as shown as an example in view 9b of [Fig.9]. .

[0125] In this [Fig. 9], the clamping piece 5 is shown in a "theoretical" position which appears to interfere with the plate in cases where the plate has guide ribs, for example, as described previously. It will be understood that the position of the clamping piece 5 can also be inclined relative to the plate 4.

[0126] In cases where the roller 2 comprises an electrical cable 25 having a connector 26 exiting outside the roller 2 comprising a channel 23 emerging from the distal end 24 of the mounting shaft 21 of roller 2, the method includes, prior to positioning the plate, - the passage of connector 26 and cable 25 through the receiving opening 31 of the profile, - the passage of connector 26 and cable 25 through opening 42 of plate 4.

[0127] According to an example in which the plate 4 comprises two lateral guide walls 45.1, 45.2, the method may include, when mounting the clamping piece 5 on the plate 4, inserting the clamping piece 5 between the two lateral guide walls 45.1, 45.2 of the plate 4. Thus, the clamping piece 5 is held laterally in a recess provided in the plate 4, so as to center the clamping piece 5 on the plate 4. In this way, the risk of the second clamping hole 54 of the clamping piece 5 shifting laterally from the first clamping hole 44 of the plate 4 is also limited.

[0128] According to a particular example in which the two side guide walls 45.1, 45.2 each include a guide rib 46.1, 46.2, the method may include, when inserting the clamping piece 5 between the side guide walls 45.1, 45.2, the passage of the additional stop surface 57 under the stop surface 47 of the guide ribs 46.1, 46.2 of the plate 4. To this end, the clamping piece 5 may be inclined when inserted into the plate, in the manner illustrated for example in [Fig. 6], so as to present, firstly, an upper portion of the clamping piece 5 comprising the second locking surface 53 and the additional stop 57, so as to slide it under the guide ribs 46.1, 46.2.

[0129] For example, the additional stop surface 57 can be carried by two lateral projections protruding from the lateral sides 55.1, 55.2 of the clamping part 5. In other examples, the additional stop surface 57 is formed by a portion of a front surface 59.1 of the clamping part 5. Preferably, the additional stop surface is provided near the second locking surface 53, in an upper portion of the clamping part 5.

[0130] According to a particular example, notably visible in [Fig.9], a rear surface 59.2 of the clamping piece may have, in an area adjacent to the second locking surface 53, a chamfer 59.3 which creates a material withdrawal from the clamping piece 5. According to one application, such a chamfer 59.3 may facilitate the insertion of the clamping piece 5 under the guide ribs 46.1, 46.2 of the plate 4, by removing material which could, by the inclination of the clamping piece 5, interfere with the profile 3 and prevent the passage of the clamping piece 5.

Claims

1. Demands A fastening device (1) for a conveyor roller (2) (10) on a profile (3), the roller (2) comprising a cylindrical portion (20) and a mounting shaft (21) projecting from a side (22) of the cylindrical portion (20), the mounting shaft (21) comprising a distal end (24) passing through the profile (3) via a receiving opening (31), the fastening device (1) comprising: a turntable (4), comprising: • a rear surface (41) configured to rest against the profile (3), • an opening (42) configured to allow passage of the distal end (24) of the mounting shaft (21) of the roller (2), • a first blocking surface (43) defining a portion of a contour (420) of the opening (42), the first blocking surface (43) being configured to cooperate with a first part (211) of the radial outer surface (210) of the mounting shaft (21) of the roller (2), • a first clamping hole (44) passing through the plate (4) and opening onto the rear surface (41), a clamping piece (5), intended to be positioned in the plate (4), and comprising: • a second locking surface (53) opposite the first locking surface (43) of the plate (4), the second locking surface (53) being configured to cooperate with a second part (212) of the radial outer surface (210) of the mounting shaft (21) of the roller (2), said second part (212) being opposite the first part (211) of the radial outer surface (210) of the mounting shaft (21), • a second clamping orifice (54) facing the first clamping orifice (44) of the plate (4), a clamping member (6) configured to pass through both the second clamping orifice (54) of the clamping member (5), the first clamping orifice (44) of the plate (4), and a third clamping orifice (34) of the profile (3), the clamping member (6) allowing the plate (4) and the clamping piece (5) to be brought together in a direction of approach, one of the plate (4) or the clamping piece (5) comprising an inclined ramp (8), and the other comprising a sliding portion (9) configured to cooperate with the ramp (8), so that the clamping of the clamping member (6) induces a movement of the second locking surface (53) towards the first locking surface (43) of the plate (4) in a direction of clamping until the mounting shaft (21) of the roller (2) is locked.

2. A fastening device according to the preceding claim, in which the clamping member (6) comprises a clamping screw cooperating with a nut (7) to bring the plate (4) and the clamping piece (5) closer together, the ramp (8) being inclined with respect to the axis of the clamping screw.

3. Fixing device according to any one of the preceding claims, wherein the ramp forms an angle with the approach direction of between 3° and 22°, preferably the angle of the ramp is substantially equal to 5° or substantially equal to 20°.

4. A fastening device according to any one of the preceding claims, wherein a portion of the opening (42) of the plate (4) is partially obstructed by the clamping piece (5) when the clamping member is tightened, so that once tightening is carried out, the area of ​​the obstructed portion of the opening (42) represents at least 50% of the area of ​​the opening (42).

5. A fastening device according to any one of the preceding claims, wherein the plate comprises two side guide walls (45.1, 45.2), extending at least partially between the first locking surface and either of the ramp (8) or the sliding portion (9) according to the clamping direction, the side guide walls (45.1, 45.2) being configured to cooperate with side sides (55.1, 55.2) of the clamping piece (5).

6. A fastening device according to the preceding claim, wherein the two lateral guide walls (45.1, 45.2) each comprise a guide rib (46.1, 46.2) having a stop surface (47) extending perpendicularly to the direction of approach, a complementary stop surface (57) of the clamping piece (5) being configured to cooperate with the stop surface (47) of the two guide ribs (46.1, 46.2) of the plate (4) in order to guide the clamping piece (5) and to prevent it from moving away from the profile (3) when tightening the clamping screw (6).

7. A fastening device according to any one of the preceding claims, wherein the mounting shaft (21) of the roller (2) has a hexagonal cross-section, the first locking surface (43) and the second locking surface (53) each comprising two adjacent opposite faces inclined relative to each other (431, 432, 531, 532).

8. A fastening device according to the preceding claim, wherein the first locking surface (43) and the second locking surface (53) each comprise a groove (433, 533) cut into each other of the plate (4) and the clamping piece (5), each groove (433, 533) being positioned so that it extends in place of an edge common to the two adjacent faces (431, 432, 531, 532).

9. Conveyor (10) comprising a profile (3) and a roller (2) comprising a cylindrical portion (20) and a mounting shaft (21) projecting from a side (22) of the cylindrical portion (20), the mounting shaft (21) comprising a distal end (24) passing through the profile (3) by a receiving opening (31), the roller (2) being fixed to the profile (3) by a fastening device (1) according to any one of the preceding claims.

10. Conveyor (10) according to claim 9, wherein the plate (4) and the clamping piece (5) extend lengthwise in a vertical direction, the first part (211) of the mounting shaft (21) being an upper portion of the mounting shaft (21) on which rests by gravity the first locking surface (43) of the plate (4) when it is positioned against the profile (3), and the second part (212) of the mounting shaft being a lower portion of the mounting shaft (21), the clamping direction being in the vertical direction.

11. A method for fixing a conveyor roller (2) (10) onto a profile (3) with a fixing device (1) according to any one of claims 1 to 8, the roller (2) comprising a cylindrical portion (20) and a mounting shaft (21) projecting from a blank (22) of the cylindrical portion (20), the mounting shaft (21) comprising a

12. distal end (24) passing through the profile (3) via a receiving opening (31), the method comprising: - the passage of the mounting shaft (21) of the roller (2) through the receiving opening (31) of the profile, - the positioning of the plate (4) so ​​that the first locking surface (43) cooperates with a first part (211) of the radial outer surface (210) of the mounting shaft (21) of the roller (2), and so that the rear surface (41) of the plate is pressed against the profile (3), and so that the first clamping hole (44) is positioned opposite the third clamping hole (34) of the profile (3), - the mounting of the clamping piece (5) on the plate (4), by positioning the clamping piece (5) so that one of the ramp (8) or the sliding portion (9) cooperates with the other of the ramp (8) or the sliding portion (9), and so that the second clamping orifice (54) of the clamping piece (5) is opposite the first clamping orifice (44) of the plate (4), and so that the second locking surface (53) is opposite the first locking surface (43) in such a way that the mounting shaft (21) of the roller (2) extends between the first locking surface (43) and the second locking surface (53) of the fastening device, - the passage of a clamping screw (6) through the first, second and third clamping holes (44, 54, 34), - the tightening of the clamping element, causing the clamping part (5) to approach the plate (4) so ​​that a relative sliding between the sliding portion (9) and the ramp (8) induces a movement of the second locking surface (53) towards the first locking surface (43) of the plate (4) until the mounting shaft (21) of the roller (2) is blocked. A fastening method according to claim 11, wherein the plate (4) of the fastening device (1) comprises two lateral guide walls (45.1, 45.2), extending at least partially between the first locking surface (43) and either of the ramp (8)

13. or of the sliding portion (9), the side guide walls (45.1, 45.2) being configured to cooperate with side sides (55.1, 55.2) of the clamping piece (5), the method comprising, when mounting the clamping piece (5) on the plate (4), the insertion of the clamping piece (5) between the two side guide walls (45.1, 45.2) of the plate (4). A fastening method according to the preceding claim, wherein the two side guide walls (45.1, 45.2) each comprise a guide rib (46.1, 46.2) having a stop surface (47) extending parallel to the rear surface (41) of the plate (4), a complementary stop surface (57) of the clamping piece (5) being configured to cooperate with the stop surface (47) of the two guide ribs (46.1, 46.2) of the plate (4), the method comprising, when inserting the guide piece (5) between the side guide walls (45.1, 45.2), the passage of the complementary stop surface (57) under the stop surface (47) of the guide ribs (46.1, 46.2) of the plate (4).

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