ROUTING SUPPORT FOR RADIAL ACTUATOR AND ASSOCIATED MAGNETIC BEARING MODULE

Abstract

ROUTING SUPPORT FOR RADIAL ACTUATOR AND ASSOCIATED MAGNETIC BEARING MODULE This routing support (1) for a cable (2) is intended to be assembled on a radial actuator (4) for a magnetic bearing module (5). The radial actuator (4) for the magnetic bearing module (5) comprises an arrangement of coils arranged around a central axis and an insulation displacement contact (7). The routing support (1) includes a routing track for the cable (2) and openings (3) configured to allow the insertion of said cable (2) into the insulation displacement contact (7) through some of the openings (3) when the routing support (1) is positioned opposite said radial actuator (4), said routing track being formed on two opposite faces of the routing support (1) by at least a plurality of protrusions and / or screen printing configured to delimit bearing surfaces for said cable (2) for its routing along the routing support (1).Figure for the abridged version: [Fig 8].

Description

Title of the invention: ROUTING SUPPORT FOR RADIAL ACTUATOR AND ASSOCIATED MAGNETIC BEARING MODULE Technical field of the invention

[0001] The present invention relates to a magnetic bearing module, which includes a radial actuator.

[0002] The present invention aims to constitute a magnetic bearing module which includes a routing support for a radial actuator. Prior art

[0003] A magnetic bearing module of a system, such as an industrial machine, classically comprises a radial actuator, one or more other actuators and a position detector.

[0004] Cable routing on a support coupled with crimping these cables by an insulation displacement contact makes it possible to create the circuit of a radial actuator for magnetic bearing in a simple and quick way while ensuring electrical insulation.

[0005] To satisfy the conditions mentioned above, two wiring methods are classically used: connections made manually called splices or the use of a printed circuit board, or "PCB" for the anglicism "Printed Circuit Board".

[0006] The method of manually splicing connections between enameled wires and cables or between enameled wires, requires intermetallic brazing, an insulation step and a manual mechanical positioning step, followed by one or more impregnations with a varnish for bonding and electrical insulation of the assembly, then cleaning of the mechanical interfaces for positioning of the assembly in a magnetic bearing module.

[0007] This method is not automatable, therefore difficult to replicate, laborious, and unreliable.

[0008] The method of using a PCB, in which the enameled wires can be soldered directly onto the printed circuit board or onto a through-pin, requires that the cables can also be soldered directly or via a connector with through-pins, all of which must be held with screwed or crimped fasteners, and generally additional overmolding as mechanical protection and / or as electrical insulation.

[0009] This method is particularly expensive, because it requires complex production steps and tools, and prevents the modularity of production tools, which are fixed on a PCB model.

[0010] The invention aims to provide a magnetic bearing module whose assembly can be done in an automatic line in a robotic station, greatly reducing the manufacturing time of the module, while allowing dimensional adaptation of the production tools according to the dimensions of the desired magnetic bearing modules.

[0011] The invention also makes it possible to avoid making additional overmoldings or impregnations for mechanical and / or electrical protection of the PCB on which the enamelled winding wire is directly soldered or connected, operations which are long and delicate because of the use of chemicals and cooking and cleaning times. Summary of the invention

[0012] The invention aims to overcome at least some of the aforementioned drawbacks and to provide a cable routing support for a radial actuator for a magnetic bearing module, offering a fast, simple and reliable implementation, and this over a wide range of magnetic bearing dimensions.

[0013] In light of the foregoing, the invention relates to a cable routing support intended to be assembled on a radial actuator for a magnetic bearing module. The radial actuator for the magnetic bearing module comprises an arrangement of coils arranged around a central axis and an insulation displacement contact. The routing support includes a cable routing track and openings configured to allow the cable to be inserted into the insulation displacement contact through some of the openings when the routing support is positioned opposite the radial actuator for the magnetic bearing module. The routing track is formed on two opposite faces of the routing support by at least a plurality of protrusions and / or screen prints configured to define cable bearing surfaces for its routing along the routing support.

[0014] Such a routing track simplifies the manufacturing process of the radial actuator by using standard insulation displacement contacts, precise coil positioning with keying, and a lightweight and easy-to-implement cable routing support that eliminates the need for complex chemical processes, improves the thermal and chemical resistance of the cable and coils of the module, and allows for modular production with a limited risk of error, faster and more environmentally friendly.

[0015] Above all, this method of pre-wiring the routing support, coupled with insulation displacement contact technology, drastically reduces the time required for the very tedious connection steps, making its manufacturing process more reliable and automatable, but above all flexible on demand since the manufacture of this modular support in length and cable dimensions allows increasing the number of references compatible with the same support for a more or less long cabling installed in the same way on this support.

[0016] Preferably, the routing support includes at least one notch forming a cable passage from one face of the routing support to the other. Such a notch ensures correct and reliable positioning of the cable as it passes from one face of the routing support to the other.

[0017] Advantageously, the notch has a variable cross-section so as to retain the cable by pinching. Such a configuration further improves the correct and reliable positioning of the cable as it passes from one side of the routing support to the other.

[0018] Preferably, the routing support includes at least one retaining slot configured to pinch the cable for insertion into the insulation displacement contact through the opening. Such a retaining slot promotes correct cable positioning during insertion into the insulation displacement contact through the opening, thus facilitating the assembly of the routing support onto the radial actuator.

[0019] For example, the routing support has two retaining slots positioned on either side of the opening. Such a configuration ensures optimal cable positioning.

[0020] Advantageously, the routing support includes clipping hooks designed to cooperate with locking lugs arranged on the radial actuator. Such a configuration ensures that the routing support assembly remains attached to the radial actuator.

[0021] According to another aspect, the invention relates to an assembly comprising a routing support as defined above and a cable arranged on the routing track of the routing support. Such a pre-wired assembly simplifies the manufacturing process.

[0022] According to another aspect, the invention relates to a magnetic bearing module comprising a radial actuator coupled to the magnetic bearing and an assembly as defined above assembled on the radial actuator.

[0023] Preferably, the magnetic bearing module cable is held by pinching when inserted into the insulation displacement contact.

[0024] Advantageously, the insulation displacement contact is housed at least partially within the opening that allows the cable to be inserted into the insulation displacement contact. This configuration promotes cable positioning and good relative positioning of the routing support on the radial actuator. Brief description of the figures

[0025] The invention will be better understood upon detailed study of an embodiment taken by way of non-limiting example and illustrated by the accompanying drawings, in which:

[0026] [Fig-1] is a top view of an assembly comprising a routing support and cables according to the invention,

[0027] [Fig.2] is a bottom view of the entire [Fig.1],

[0028] [Fig.3] is a detail view of a part of the whole of [Fig.2],

[0029] [Fig.4] is a front perspective view of a magnetic bearing module including the entire [Fig. 1] assembly on a radial actuator, excluding the magnetic bearing module,

[0030] [Fig.5] is a rear perspective view of the magnetic bearing module of [Fig.4],

[0031] [Fig.6] is a detail view of part of the magnetic bearing module of [Fig.5],

[0032] [Fig.7] is a top view of the magnetic bearing module of [Fig.4],

[0033] [Fig.8] is a cross-sectional view along axis VIII-VIII of [Fig.7], before assembly, And

[0034] [Fig.9] is a cross-sectional view along axis IX - IX of [Fig.7], before assembly. Detailed description of the invention

[0035] As shown in Figures 1 to 3, a cable routing support 1 of a cable 2 according to the invention comprises a cable routing track 2 and openings 3.

[0036] The routing support 1 is configured to be assembled on a radial actuator 4 for a magnetic bearing module 5 (Figures 4 and 5). The radial actuator 4 comprises an arrangement of coils 6 arranged around a central axis X and an insulation displacement contact 7, particularly visible in Figures 8 and 9. It should be noted that identical or similar elements bear the same reference numerals from one figure to another.

[0037] The openings 3 are configured to permit the insertion of the cable 2 into the insulation displacement contact 7 through some of the openings 3 when the routing support 1 is positioned opposite the radial actuator 4.

[0038] Each opening 3 is formed on the routing support 1 by open protrusions 3a arranged on a rear face 1b of the routing support 1. Each opening 3 is for example rectangular in shape, so as to accommodate the shape of the insulation displacement contact 7.

[0039] The cable routing track 2 is formed on two opposite faces of the routing support 1, namely the rear face 1b and a front face 1a. The cable routing track 2 is formed by at least a plurality of protrusions 8 and / or screen printing configured to delimit support surfaces for the cable 2 for its routing. along the routing support 1. The opposite faces aa, 1b delimit the thickness of the routing support 1. The protrusions 8 and / or silkscreens are arranged to form the routing track which extends over all or part of the circumference of the plate formed by the routing support 1.

[0040] For each routing track, the protrusions 8 and / or screen prints are, for example, spaced apart from each other on the circumference of the plate formed by the routing support 1, which makes it possible to limit the amount of material used and to lighten the part.

[0041] Preferably, for each track the protrusions 8 and / or silkscreens are arranged so as to hold the cable 2 laterally by two of its sides, which allows optimal support despite the different successive orientations of the cable 2.

[0042] By "cable 2" is referred indiscriminately to one or more flexible cables passing through or intended to pass through the routing track, and comprising for example an enameled wire and / or a multi-strand cable.

[0043] The routing support 1 can have several routing tracks for several cables 2, and for each routing track, the protrusions 8 and / or silkscreens are arranged so as to hold laterally and on both sides the cable 2 arranged on that routing track.

[0044] The protrusions 8 are for example supplemented by screen prints in projection on one face of the routing support 1 to help the routing of the cable 2 along the routing support 1.

[0045] This forms an assembly comprising a routing support 1 and a cable 2 arranged on the routing track of the support, the length of which can be adapted at the time of its installation on the routing support 1, without changing the difficulty of this step in the manufacture of the magnetic bearing module 5.

[0046] Such a magnetic bearing module 5 with a routing track has the advantage of being able to easily multiply the design variants of the routing support 1, unlike prior art modules comprising a fixed printed circuit board, for which it is not possible to modify the lengths of electrical connections from the printed circuit board to the external system.

[0047] Thus, the routing support 1 allows a cable 2 or cable bundle 2 to be of the desired final length and already equipped with its connectors according to the desired version, and therefore to have references of various lengths and connectors when the systems known in the prior art do not allow modularity in the lengths of cabling.

[0048] This routing support 1 equipped with a routing track is modular since it can be mounted on any support having the same interfaces, namely the same center distance between the pins, and the same positions of the coils 6 and the insulation displacement contacts 7.

[0049] This routing support 1 can also be reproduced by homothety at different sizes to adapt to the need while maintaining the ratio of the insulation displacement contacts 7, and by readjusting the routing, since the coils 6 are substantially common to all sizes.

[0050] Advantageously, the routing support 1 includes at least one notch 9 formed from the outer surface of the routing support 1 and forming a passage for the cable 2 from one face la, 1b to the other of the routing support 1.

[0051] Preferably, the notch 9 has a variable cross-section which decreases as it moves radially towards the inside of the routing support 1 so as to retain the cable 2 by pinching. Here, the notches 9 have a Y-shaped cross-section. Alternatively, it remains possible to use variable cross-sections having other shapes.

[0052] As particularly visible in [Fig.3], the routing support 1 includes at least one retaining slot 10 configured to pinch the cable 2 for its insertion into the insulation displacement contact 7 through the opening 3.

[0053] The slots 10 allow the cable 2 to be pinched to ensure its positioning and retention during its insertion into the insulation displacement contact 7.

[0054] The routing support 1 includes, for example, two retaining slots 10 placed on either side of the opening 3 on the protrusions 3a delimiting the opening 3, so as to ensure that the cable 2 is held on either side of the insulation displacement contact 7 in a symmetrical, and therefore precise, stable, durable and reliable position.

[0055] As particularly visible in [Fig.6], the routing support includes clipping hooks 11 intended to cooperate with locking lugs 12 arranged on the radial actuator 4. Such snapping means allow robust fixing of the routing support 1 on the radial actuator 4 and ensure the integrity of the connections during the assembly and / or subsequent storage phases.

[0056] The coils 6 of the radial actuator 4 are positioned around a substantially concentric circular assembly, at precise radial distances from the center of the circular assembly, and also at precise angular positions, since these positionings allow the insulation displacement contacts 7 to be placed at strategic locations to receive the cable 2 with which the electrical connection must be made up to the coils 6.

[0057] The radial actuator 4 can thus comprise a plurality of isolation displacement contacts 7 and cables 2 linked to one or more routing tracks of the routing support 1.

[0058] The cable 2 may also include, at least in part, the winding wire which is wound onto each reel to form the reels 6 and then routed to at least one opening 3 to make a connection in an isolation displacement contact 7 by inserting it into the latter.

[0059] Thus, the routing track allows each cable 2 to be routed along the path intended for it thanks to the shapes arranged on the routing support 1.

[0060] The routing support 1 is for example a plastic part, comprising shapes and extrusions for example formed by screen printing to obtain the routing track by facilitating its manufacture.

[0061] Such a routing track allows each cable 2 to be guided correctly and reduces crossing errors.

[0062] Figures 4 to 7 illustrate a magnetic bearing module 5 comprising a pre-wired routing support 1 assembled on a radial actuator 4. The magnetic bearing module 5 includes a position detector (not shown) to which the radial actuator 4 is coupled.

[0063] Figures 8 and 9 are cross-sectional views of the magnetic bearing module 5 before assembly of the pre-wired routing support 1 onto the radial actuator 4. Before assembly, the routing support 1 is positioned opposite the radial actuator 4 for the magnetic bearing module 5.

[0064] As previously indicated, the cable 2 is held by pinching when inserted into the insulation displacement contact 7, using the retaining slots 10.

[0065] After assembly, the insulation displacement contact 7 is housed at least in part in the opening 3 which allows the insertion of the cable 2 into the insulation displacement contact 7.

[0066] The routing support 1 provides support and mechanical protection for the circuit formed by the routing track for the routing of the cable 2 against possible environmental aggressions during the life of the magnetic bearing module 5 or during the various operations of its manufacture.

[0067] The routing support 1 also makes it possible to keep the cable 2 and the reels 6 in operational position throughout the life of the module 5, ensuring that the electrical isolation distances are maintained in accordance with the pre-established rules.

Claims

Demands

1. Routing support (1) for a cable (2), intended to be assembled on a radial actuator (4) for a magnetic bearing module (5), said radial actuator (4) for a magnetic bearing module (5) comprising an arrangement of coils (6) disposed around a central axis (X) and an insulation displacement contact (7), said routing support (1) being characterized in that it comprises a routing track for the cable (2) and openings (3) configured to permit the insertion of said cable (2) into the insulation displacement contact (7) through some of the openings (3) when the routing support (1) is positioned opposite said radial actuator (4) for a magnetic bearing module (5), said routing track being formed on two opposite faces (a,1b) of the routing support (1) by at least a plurality of protrusions (8) and / or screen printing configured to delimit support surfaces for said cable (2) for its routing along the routing support (1).

2. Routing support (1) according to claim 1, comprising at least one notch (9) forming a passage for the cable (2) from one face (la, 1b) to the other of said routing support (1).

3. Routing support (1) according to claim 2, wherein the notch (9) has a variable section so as to retain by pinching the cable (2).

4. Routing support (1) according to any one of claims 1 to 3, comprising at least one retaining slot (10) configured to pinch the cable (2) for insertion into the insulation displacement contact (7) through the opening (3).

5. Routing support (1) according to claim 4, comprising two retaining slots (10) placed on either side of the opening (3).

6. Routing support (1) according to any one of claims 1 to 5, comprising clipping hooks (11) for cooperating with locking lugs (12) disposed on the radial actuator (4).

7. Assembly comprising a routing support (1) according to any one of claims 1 to 6 and a cable (2) disposed on said routing track of the routing support (1).

8. A magnetic bearing module (5) comprising a magnetic bearing, a radial actuator (4) coupled to said magnetic bearing, and a assembly according to claim 7 assembled on said radial actuator (4).

9. Magnetic bearing module (5) according to claim 8, wherein the cable (2) is held by pinching when inserted into the insulation displacement contact (7).

10. Magnetic bearing module (5) according to claim 8 or 9, wherein the insulation displacement contact (7) is housed at least partly in the opening (3) which permits insertion of the cable (2) into the insulation displacement contact (7).

Images