Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
  • H02K5/225—Terminal boxes or connection arrangements
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
  • H02K11/30—Structural association with control circuits or drive circuits
  • H02K11/33—Drive circuits, e.g. power electronics
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/02—Casings or enclosures characterised by the material thereof
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K5/00—Casings; Enclosures; Supports
  • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
  • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
  • H02K2213/09—Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators

Definitions

• the present invention relates to rotating electrical machines and more particularly to the terminal box housings provided thereon for receiving the electrical connections of the machine and optionally one or more electronic modules such as by example a voltage regulator.
• the invention more particularly relates to a housing whose shape substantially matches that of the housing of the machine.
• US Patent 5,192,888 discloses a terminal box housing having two parts which mate with interposition of a seal. Openings are provided for the arrival of electrical conductors.
• U.S. Patent 6,002,083 discloses another terminal box package arrangement comprising two portions that mate in a substantially oblique assembly plane.
• the French patent application FR 2 978 629 discloses a terminal box housing comprising two parts assembled to one another and to the housing by screws, at least one of the parts comprising on its upper face a trapdoor. access.
• the housing of a large majority of industrial alternator terminal boxes is constructed by an assembly of multiple metal panels.
• the manufacture and assembly of these metal panels are tedious and require the implementation of a large amount of hardware.
• a control cabinet When the electric machine is an alternator that is associated with a drive engine, to form a generator, a control cabinet is generally provided.
• the electrical cabinet is arranged differently according to the manufacturers, for example above the alternator, on the side or on the back. Regardless of the position of the selected cabinet, access to the inside of the terminal box to perform, for example, the settings of a voltage regulator that is present, must be possible with maximum ease.
• the presence of the control cabinet can interfere with the accessibility to the housing when intervention is needed on the machine.
• the vast majority of alternator housings is cylindrical. The crankcase diameters are increasing according to the power of the machine. Therefore, to ensure a sufficient degree of protection, the interface of the housing with the housing must be of complementary shape. This leads to having a terminal box geometry for each housing diameter, and thus to multiply the references.
• the aim of the invention is to reduce the number of terminal box references required to cover the different casing diameters that make up a range of alternators.
• the invention also aims to simplify the construction of the terminal box.
• the invention also aims to make it easier to work on the machine, so as to offer a wide variety of possible implementations of the control cabinet relative to the machine.
• a rotating electrical machine comprising a housing and a terminal box housing attached to the housing, substantially matching the shape, the housing having two parts connected between they by at least one joint allowing the housing to adapt to the curvature of the housing.
• the housing can adapt to at least two different housing diameters, which reduces the number of references.
• At least a portion of the housing can occupy two different positions on the housing, namely a closed position and an open position after pivoting relative to the other part through the joint.
• the latter allows each of the two parts to pivot upwards from the closed position to the open position, independently of the other. This facilitates access to the contents of the terminal box, and wiring with the control cabinet is made easier.
• each part has a transverse upright, the adjacent transverse uprights of the parts of the housing being partially overlapping, advantageously in a substantially sealed manner, depending on the degree of relative pivoting of the parts necessary to best fit the geometry of the housing.
• the rounded, concave outward edge of at least one transverse post is advantageously defined by a flexible lip, which contributes to amount to marry at best the shape of the housing.
• the lip comes directly from the molding with the piece. Its profile allows it to deform and marry the different diameters on which it comes to rest.
• the articulation is preferably central, in which case the parts form half-shells.
• the housing parts are advantageously fixed on the housing independently of one another. It is thus possible to access the interior of the housing by one or the other of its sides, by rotating the corresponding part around the joint, without completely disengage the casing of the housing.
• the articulation is advantageously in the upper part of the housing, and extends parallel to the axis of rotation of the machine.
• the housing can be integral, being made in one piece, the hinge being formed for example by a flexible band of articulation coming from molding.
• the shape and the initial opening of the housing are such that the molding of the part can be done in a single demolding direction. This limits the mold to two molding parts.
• articulation is meant an articulated zone allowing at least partial rotation of a portion of the housing around at least one geometric axis of rotation.
• the joint may comprise a flexible band, a bellows, or any other flexible or articulated structure allowing sufficient pivoting.
• Each part of the housing can comprise:
• a lateral amount connected firstly to the upper wall and secondly to the two transverse uprights.
• top wall refers to an orientation of the machine in which it is observed with the housing located on the top, the axis of rotation being horizontal.
• the rounded lower edges are preferably of a radius of curvature intermediate to those of the casings of destination.
• the parts are advantageously symmetrical to one another, preferably with respect to a median plane containing a geometric axis of the joint. This plane of symmetry also preferably contains the axis of rotation of the machine.
• Inside the terminal box on one of the sides, there is for example a voltage regulator and on the other side a terminal block for electrical connection. Thanks to the symmetry of the parts, it is possible to switch the terminal block and the regulator according to the needs of the user, ie exit left or right.
• Each transverse amount may comprise, in the vicinity of the joint, an outgrowth configured to obstruct an end of the joint. This can enhance the protection provided by the enclosure.
• the housing preferably comprises, at the lower edge of a transverse and / or lateral upright, at least one tongue for fixing it to the housing.
• the upper wall may comprise a central panel bounded to the center by the hinge and outwardly by an inclined pan extending obliquely relative to the central pan, the inclined pan being connected below the lateral upright.
• Each part, in particular on the inclined face, may have at least one removable zone, of circular contour, for example, delimited by a weakened link, which may be manually perforated, to form an opening intended to receive a duct passing end.
• two electrical connection configurations may be proposed. Either the terminal block and the regulator are factory mounted in the housing and the user can be connected to the housing with its cables, or the machine is delivered without the terminal block and the regulator, but with cables ready to be connected in the box. power cabinet of the generator.
• these two variants are made with two different housings.
• the housing according to the invention may be suitable to provide these two cable outlet variants. The cable outlet through one of the inclined faces allows to avoid having to use an elbow pipe end, whatever direction the sheath must take to join the electrical panel, on the side, forward, in back, on the top or other.
• the subject of the invention is also, in combination with the foregoing, a range of electrical machines, comprising at least a first machine and a second machine, each having casings diameters Di and D 2 different, with D 2 > Di, and identical terminal box housings, these housings being as defined above, with an angle formed between the parts of these housings which is different from one machine to another.
• / Di between the diameters Di and D 2 of the housings can be between 0 and 50%.
• the radius of curvature (of the lower edge of the transverse uprights of the housing parts may be between 0.8 x (Di + D 2 ) / 4 and 1, 2 x (Di + D 2 ) / 4.
• another subject of the invention is a terminal box housing having at least one inclined section extending obliquely relative to a median plane for the housing, preferably at an angle with respect to this plane of between 30 ° and 60 °, the inclined face having one or more removable zones delimited each by a weakened connection with the rest of the inclined face, this or these zones preferably being of circular contour, being intended to be removed manually to release an opening for the establishment of a cable passage end, including equipped with a gland.
• the housing may or may not include two parts connected by a hinge.
• the advantage lies in the possibility of avoiding the use of elbows.
• the casing according to this second aspect also has the characteristics defined above, relating to the possibility of adapting to casings of different diameters.
• the subject of the invention is, independently or in combination with the foregoing, a terminal box housing for an electric machine, comprising two parts connected by a hinge, each part preferably comprising means for fixing on the casing of the machine, in particular in the form of one or more tongues fixed with screws on the casing, and at least one articulation allowing this part to pivot independently of the other to allow access to the contents of the terminal box.
• the housing can be made or not to adapt to different casing diameters and with or without an inclined pan as defined above.
• FIG. 1 schematically and in perspective shows an example of an electric machine equipped with a housing according to the invention
• FIG. 2 is a schematic view similar to FIG. 1 of a detail thereof
• FIG. 3 is a diagrammatic and isolated view, in side view, of the housing according to the invention, in a molding configuration
• FIG. 4 is a diagrammatic perspective view of the casing of FIG. 3,
• FIG. 5 is a bottom schematic perspective view of the housing of FIG. 3,
• FIG. 6 is a schematic and perspective side view of the housing of FIG. 3, ready to be put in place on the housing,
• FIG. 7 is a schematic bottom perspective view of the housing of FIG. 3,
• FIG. 8A is a schematic cross sectional view of the detail VIIIA of FIG. 7,
• FIG. 8B is a diagrammatic perspective view of the detail VIIIB of FIG. 7,
• FIGS. 9 and 10 are diagrammatic side views of the housing of FIG. 3, illustrating the possibility for the housing to adapt to casings of different diameters,
• FIG. 11 is a schematic and perspective view of the machine of FIG. 1, the housing being shown partially open,
• Figure 12 illustrates schematically and in perspective an electric machine with an alternative layout of the control cabinet
• Figure 13 is a schematic perspective view of the machine of Figure 12, with the housing partially open.
• the electric machine 1 shown in FIGS. 1, 2 and 11 to 13 is an alternator intended to be rotated by a heat engine, not shown, located at the front of the machine.
• the assembly of the alternator and the heat engine is conventionally done by a flange 2.
• the alternator has only been partially shown and only the casing 6 of the machine, of substantially cylindrical shape, is visible.
• the machine 1 is supported by a frame 3 which is secured to a control cabinet 4, which, according to the generator manufacturers, is for example positioned on the top, as shown in Figures 1 and 11, or on the side, as illustrated in Figures 12 and 13.
• a box 5 terminal box is provided on the top of the machine 1, fixed on the housing 6 to accommodate, in the example shown, a voltage regulator 8, partially visible in Figures 11 and 13.
• This housing 5 comprises two parts 10 and 11 interconnected, according to one aspect of the invention, by a hinge 12, constituted in this example by a flexible band.
• the two parts 10 and 11 are preferably made of plastic material, for example polypropylene, preferably comprising a reinforcing filler, in particular a mineral filler, for example loaded at more than 15% or 20% by weight, and may initially be devoid of open cable passages.
• plastic material for example polypropylene, preferably comprising a reinforcing filler, in particular a mineral filler, for example loaded at more than 15% or 20% by weight, and may initially be devoid of open cable passages.
• At least one, and preferably each of the parts 10 and 11, can occupy two different positions on the housing, namely a closed position and an open position, visible in Figures 11 and 13, after pivoting relative to the other part thanks to the hinge 12, an angle greater than 90 ° for example.
• Each portion 10 or 11 has an upper wall 15, two transverse uprights 16 front and rear, terminated inferiorly by a rounded lower edge 17, in particular circular, the transverse uprights 16 being connected to the upper wall 15.
• Each portion 10 or 11 comprises in in addition to a lateral amount 18 connected firstly to the upper wall 15 and secondly to the two transverse uprights 16 front and rear of the relevant part.
• Each transverse upright 16 comprises near the hinge 12 an outgrowth 20 disposed in the axis thereof, and thus improving the sealing of the closure of the housing.
• the casing 5 comprises tabs 25 located respectively at the lower edge 17 of a transverse upright 16 or the lower edge 21 of the lateral upright 18. These tabs 25 comprise least an opening 28 for the passage of a screw 27, as shown in Figure 2 in particular.
• the transverse uprights 16 may overlap partially in a cover portion 26, of generally triangular shape, visible in FIGS. 9 and 10, this covering being more or less extended depending on the degree of pivoting of the parts 10 and 1 1 when the housing is mounted. on the housing, depending on the diameter of the latter. Thus, for a small crankcase diameter, the overlap will be greater than for a larger diameter.
• FIGS. 9 and 10 show two configurations taken by the housing in the closed position to adapt to crankcases of different diameters, by simple adjustment of the angle formed between the two parts.
• the diameter Di of the destination casing is smaller than that D 2 of the casing of FIG. 10, so that the overlap between transverse uprights 16 is greater than in FIG. 10.
• the angle a between the lateral upright 18 and the vertical is greater in the example of Figure 10 to that of Figure 9.
• each transverse upright 16 is defined by a flexible lip 24, seen in greater detail in FIG. 8B, which further facilitates the adaptation of the housing 5 to casings of different diameters, in particular at least two casings of different diameters.
• the lip 24 comes directly from the molding with the workpiece. Its profile allows it to deform and marry the different diameters on which it comes to rest.
• the central panel 30 of the upper wall 15 is slightly inclined downwards relative to a horizontal axis perpendicular to the median plane M for the housing, by an angle ⁇ greater than 0, in the closed position of the housing 5 to avoid stagnations of water on the hood, as shown in Figures 9 and 10.
• each portion 10 or 11 has at least one removable zone 33 delimited by a weakened connection 32, of a thickness less than the rest of the wall as can be seen in FIG. 8A, this zone being in this region. example of circular outline. It is possible to perforate one of these zones 33 by manually breaking the weakened connection, then to mount a duct end to form a cable passage.
• fastening means such as screws 27 are introduced into the opening 28 of the tongues 25.
• the screws 27 are removed. the part 10 or 11 concerned, and this portion 10 or 11 is rotated relative to the other part upwards, without having to separate the other part of the housing 6.
• the invention also applies to an engine.
• the fixing system of the housing on the housing is different and does not include, for example, tabs.
• the housing may comprise more than one articulation, for example two articulations arranged laterally, the central panel being non-articulated, and the two parts being each connected to the central panel by a hinge.
• the housing may also comprise at least three joints, for example a central articulation and two lateral joints.
• the overlap between the transverse uprights can be replaced by a bellows.

Landscapes

• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Motor Or Generator Frames (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=54848642

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Family Cites Families (21)

• 2015
  • 2015-05-26 FR FR1554690A patent/FR3036883B1/fr active Active
• 2016
  • 2016-05-25 WO PCT/EP2016/061813 patent/WO2016189039A1/fr active Application Filing
  • 2016-05-25 CN CN201680030758.7A patent/CN107690744B/zh not_active Expired - Fee Related
  • 2016-05-25 EP EP16726515.6A patent/EP3304702A1/de not_active Withdrawn
  • 2016-05-25 US US15/575,929 patent/US20180145555A1/en not_active Abandoned

Also Published As

Similar Documents

Legal Events