FR3069964B1 - ELECTRICAL CONNECTOR COMPRISING AN ELECTRIC COMPRESSOR AND ELECTRIC COMPRESSOR COMPRISING SUCH AN ELECTRICAL CONNECTOR - Google Patents

Abstract

The invention relates to an electrical connector (1) comprising a base (2) and a cover (3) which together form a housing (4) delimiting at least one metal lug housing (5). The base (2) and the cover (3) comprise at least first positioning means (31) and elastic latching means (40), the first positioning means (31) comprising at least one tab (33) formed on the cover (3) and a finger (34) projecting from the base (2). Said lug (33) comprises a bent portion to form a guide path of the finger (34) along the cover (3) between a first pre-assembly position and a second assembly position, and the elastic detent means (40) being configured to be operative when the cover (3) is in said second assembly position.

Description

Electrical connector constituting an electric compressor and electric compressor comprising such an electrical connector

The present invention relates to an electrical connector constituting an electric compressor, in particular adapted for a refrigerant circuit fitted to a motor vehicle. It relates to such an electrical connector. It also relates to an electric compressor comprising such an electrical connector.

A motor vehicle is commonly equipped with a refrigerant circuit for modifying a temperature of an air contained inside a passenger compartment of the motor vehicle. The refrigerant circuit is arranged in a closed loop inside which a refrigerant circulates. The refrigerant circuit comprises for example at least one compressor for passing the refrigerant fluid from a low pressure to a high pressure, an external heat exchanger to allow heat exchange between the refrigerant and an outside air flow. , an expansion member inside which the cooling fluid undergoes expansion and an internal heat exchanger to allow a heat exchange between an internal air flow, delivered inside the passenger compartment, and the cooling fluid .

The compressor is for example an electric compressor comprising a housing housing an electric motor, a compression mechanism and a control device of the electric motor. For example, reference may be made to EP3168476, which describes an electric compressor of the aforementioned type.

The connection arrangements between the electric motor and the electric motor control device deserve to be improved so that such a connection is secure, simple and quick to implement, lightweight and compact, while allowing operations easy and fast maintenance.

In addition, it is desirable to arrange the electric compressor so that electric leakage between the electric motor and the control device is minimized.

An object of the present invention is to provide an electrical connector that addresses the aforementioned problems.

The connector of the present invention is an electrical connector having a base and a cover which together form a housing delimiting at least one metal lug housing.

According to the present invention, the base and the cover comprise at least first positioning means and elastic snap-fastening means. The first positioning means comprise at least one tab formed on the cover and a finger formed projecting from the base, said tab comprising a bent part to form a guide path of the finger along the cover between a first pre-assembly position. and a second assembly position. The resilient latching means are configured to be operative when the lid is in said second assembly position.

The electrical connector advantageously comprises at least one of the following technical characteristics, taken alone or in combination: the elastic latching means are configured to deform in spacing from their original position and to engage with a wall of the base by resuming their original shape, - the elastic latching means are configured to bear, in the second assembly position, against a rim of the base by defining a contact surface perpendicular to the guide direction of the finger in the tab of the first positioning means, the resilient snap-fastening means comprise a flexible tongue formed of a detent head configured to bear against said flange by return of the flexible tongue in its original form, the elastic latching means are configured to bear, in the second assembly position, against a wall of the b by defining a contact surface parallel to the guide direction of the finger in the tab of the first positioning means, the resilient detent means comprise an angled leg defining a receiving zone of a second rim of the base; the face of the bent portion of the lug which is opposite the lid is notched, - each lug housing extends mainly in an elongation direction and the guide path defined by the first positioning means extends according to this direction of elongation, - the first positioning means are arranged at a first end of the electrical connector and the elastic latching means are arranged at a second opposite end, - the housing is stepped so as to comprise a connecting portion, which defines a first part of the housing and which is opened in a first direction at a first end of the housing. electrical connector for connecting the terminal to a winding wire, and a raised portion defining a second portion of the housing and which is open in a second direction for connecting the terminal to an electrical connection pin of a housing plate; printed circuit boards, - the first positioning means are arranged in the connecting portion, the elastic latching means are arranged in the raised portion, the base and the cover comprise at least one second positioning means in the raised portion. the cover comprises a first bonnet portion corresponding to the raised portion of the housing and a second bonnet portion corresponding to the connecting portion of the housing; the first bonnet portion and the second bonnet portion forming the cover are made of one piece, - the cover is configured to cover only the connecting portion of the housing said raised portion having a closure wall secured to the base, the resilient detent means comprise a flexible tongue formed on the cover and whose free end has a detent head protruding from the cover, the detent head protrudes from the free end of the flexible tongue, away from the base, and the detent head is configured to cooperate with a slot in said closure wall in said second assembly position, - the flexible tongue is formed by cutting a wall of the lid so as to form at least a side portion of the wall of the lid separate from the flexible tongue, - the elastic latching means are configured so that the flexible tongue deforms in spacing from its original position and enters a housing of the housing delimited by the closing wall, - the means of enc elastic lamination are configured so that the flexible tongue deforms in spacing from its original position and allows the detent head to at least partially return into the light when the flexible tongue returns to its original shape, - the lid comprises an abutment wall brought into contact with the portion raised in said second assembly position, the housing comprises a plurality of housings, the housings are parallel to one another.

The present invention also relates to an electric compressor comprising such an electrical connector, in particular in which the connecting portion is disposed in line with a boss that comprises a wall transverse to an axis of elongation of the electric compressor.

The electric compressor advantageously comprises at least one of the following technical characteristics, taken alone or in combination: the raised portion is pressed against an inner face of the transverse wall which delimits a first reception zone of a stator and of a rotor of an electric motor and a second receiving area of the printed circuit board; - the connecting portion is disposed at a non-zero distance from the transverse wall; - the base comprises a coupling sleeve of the stator on a support, - the sheath is sized to accommodate a pad of the support, - the sheath has a slot for cooperating with a projection formed on the pad of the support. Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to drawings in which: FIG. 1 is a partial perspective view of a compressor Figure 2 is a partial side view of the electric compressor shown in Figure 1; Figure 3 is a detail of a longitudinal sectional view of the electric compressor illustrated in Figure 1; FIG. 4 is a view from above of an electrical connector according to one aspect of the invention, and a constituent support of the electric compressor illustrated in FIG. 1; FIG. 5 is a view similar to that of FIG. in which a cover of the electrical connector illustrated in FIG. 4 has been removed, in particular to make visible winding wire fixing lugs, FIG. 6 is a partial view from above of the support illustrated on FIG. 4, FIGS. 7, 8 and 9 are views from different perspectives of the electrical connector illustrated in FIGS. 4 and 5; FIG. 10 is a perspective view of a cover constituting the electrical connector illustrated in FIGS. FIGS. 7, 8 and 9; FIG. 11 is a perspective view of a constituent base of the electrical connector illustrated in FIGS. 7, 8 and 9; FIG. 12 is a view of the base illustrated in FIG. another perspective rendering visible a face other than those illustrated in this FIG. 11, FIGS. 13 and 14 are respective perspective views of a first variant and a second variant embodiment of the electrical connector, FIG. a perspective illustration of a metal lug to be housed inside the electrical connector; - Figure 16 is a perspective view of a third embodiment of the electrical connector; and Figures 17 and 18 are perspective views respectively of the cover and the base of the third variant of the electrical connector of Figure 16.

It should first be noted that the figures disclose the invention in detail to implement the invention, said figures can of course be used to better define the invention where appropriate.

It is recalled that the invention relates to an electrical connector and in particular the shape of the mechanical housing which houses various electrical components of this connector, and a compressor equipped with such a connector. In what follows, the electric compressor 17, such as that illustrated in Figure 1, is intended to be mounted on a refrigerant circuit in a motor vehicle air conditioning assembly, but it will be understood that it could be implemented. works in other motor vehicle systems.

The electric compressor 17 comprises an enclosure 28, longitudinally extended along an axis of elongation A1, and housing from one longitudinal end to the other at least one compression mechanism, such as a spiral mechanism, an electric motor, configured for driving said compression mechanism and which may comprise for this purpose in particular a rotor secured to a drive shaft of the compression mechanism and a stator in which the rotor is set in motion, as well as an electric motor control device which comprises in particular a printed circuit board 6 visible in FIG. 1. The control device constitutes, for example, an inverter, that is to say a means of transforming a direct current into alternating current, as well as a means of controlling the rotational speed of the electric motor of the electric compressor 17. The chamber 28 of the electric compressor 17 is longitudinally extended along the axis of elongation Al which e It is also likely to form an axis of symmetry of the electric compressor 17. In a current manner, the axis of elongation is in particular parallel to an axis of rotation on itself of the constituent rotor of the electric motor.

In FIGS. 2 and 3, the upper part of the enclosure 28 has been removed, it being understood that the upper and lower orientation of the enclosure refers to the arbitrary orientation of FIG. 1 and is not limiting of the invention. In this way, it is made visible that the electric compressor 17 comprises an electrical connector 1 fixed on a peripheral support 22 arranged at a longitudinal end of a motor assembly of rotor / stator type, here not visible because covered with a lower part 28i of the enclosure 28.

The electrical connector 1 comprises a base 2 and a cover 3 together forming a housing 4. The housing 4 delimits at least one metal terminal housing 100 so that the metal terminal 100, also illustrated in FIG. part of a winding wire 102, such as a winding wire of the stator of the motor assembly, visible in Figure 5, and secondly to a pin for the electrical connection to the plate 6 of printed circuits of the compressor 17. In this way, the control instructions passing through the printed circuit board can be transmitted to the electrical phases of the winding of the motor assembly, via the electrical connector 1.

In FIG. 2, the peripheral support 22 comprises fastening means 23 configured to cooperate with a sleeve 21 for hooking up the electrical connector 1 on the support 22. More particularly, the sleeve 21 comprises a lug 27 forming said fastening means 23. , also visible in Figure 6, and dimensioned to cooperate with a slot in the sleeve 21.

The base 2 and the cover 3 are assembled together to form the housing 4. The base 2 and the cover 3 are for example made of a plastic material, lightweight, electrically insulating and mechanically flexible to facilitate assembly between them of the base 2 and the cover 3. will be described in more detail below means, including positioning and resilient snap implemented to facilitate such an assembly.

The housing 4 is stepped and comprises for this purpose a connecting portion 7, which defines a first portion of the housing 5, and a raised portion 9 which defines a second portion of the housing 5, it being understood that the housing 5 is intended to receive a metal terminal 100. The connecting portion 7 is disposed as close as possible to the rotor / stator-type motor assembly and in particular is configured to allow connection of the metal lug 100 to the winding wire 102 of the stator. The raised portion 9 is configured to allow a connection of the metal lug 100 to a pin for electrical connection to the printed circuit board 6. As can be seen in particular in FIG. 4 or in FIG. 7, the portion of the lid formed in this raised portion 9 has through-holes 90 to allow the introduction of such pins to the corresponding metal lugs 100 housed in the inside the case.

In FIG. 3, the raised portion 9 is facing an inner face 19 of a transverse wall 20 arranged across the enclosure 28 of the electric compressor 17. More particularly, the transverse wall 20 is formed substantially orthogonal to the extension axis A1, across the enclosure. The transverse wall 20 defines in this way a first reception zone ZI of a stator and a rotor of the electric motor and a second reception zone Z2 of the printed circuit board 6. In other words, the transverse wall 20 is a separation wall between the first zone ZI housing the electric motor and the second zone Z2 housing said plate 6 constituting the control means of the electric motor, and the inner face 19 of this transverse wall 20 is turned towards the second Z2 reception area. It is understood that the transverse wall 20 comprises at least one through opening for accommodating a connection interface between the two receiving zones Z1, Z2, and for example the pin for the electrical connection of the printed circuit board 6 to the terminal metallic 100.

The connecting portion 7 is disposed at a non-zero distance from the inner face 19 of this transverse wall 20, this distance being greater than that separating the raised portion of the same inner face 19 due to the stepped shape of the housing. The connecting portion 7 is disposed vertically, relative to the axis of elongation A1, of a boss 18 that includes the transverse wall 20 with respect to an elongation axis A1 of the electric compressor 17. that the stepped structure of the electrical box 1 allows the boss 18 to extend longitudinally at the raised portion 9, which is shifted transversely relative to the boss 18, which allows overall to reduce the size along the axis of Al elongation generated by the electric compressor 17 made by this compact. Note that the boss 18 forms an extra thickness which is intended to receive a fastener, such as a screw or the like, for holding the printed circuit board 6 on the transverse wall 20.

It is therefore noticeable that the stepped arrangement of the housing with this connecting portion and this raised portion makes it possible to arrange the housing of the connector as close as possible to the transverse wall without being hindered by the presence of this boss, which makes it possible to realize in the end a more compact compressor.

As is particularly visible in FIGS. 4 and 5, the housing 4 of the electrical connector is open at a first end 8 of the electrical connector 1 for the connection, in a first direction D1, of the metal lug 100 to the winding wire 102. and it is also open at the level of the raised portion 9 by the passage holes 90 for the connection, in a second direction D2, the metal lug 100 to the pins secured to the printed circuit board.

According to one embodiment, the first direction D1 in which at least one housing 5 formed in the base and the second direction D2 in which the raised portion 9 at least partly rises is orthogonal to one with the other. However, it will be understood that the housing 4 could have the same compactness and the same functionality with directions DI and D2 forming a distinct angle, since this arrangement allows the connection, through the metal lugs, of the printed circuit board on one side of the connector and the stator winding on the other side of the connector.

It provides a number of housing 5 corresponding to the number of phases of the motor assembly, here three. The housings 5 are preferably parallelepipedal to receive a metal lug 100 of corresponding shape, and they extend mainly in the first direction Dl. The first direction is preferably orthogonal to the axis of elongation A1. In the electrical connector according to the invention, the housings 5 are configured so as to open onto the first end 8 of the connector, and thus to centralize the same side of the connector the function of connecting the metal lugs to the winding son 102. More particularly, the housing 5 are parallel to each other. This configuration allows, in the context of the boss 18 previously described and should be avoided to position the connector closer to the transverse wall 20, to compact the connector.

As illustrated, the housings 5 are offset relative to each other along the first direction D1. The offset of the housing generates an arrangement of the housing, as well of the raised portion 9 that the connecting portion, stepped in which each step corresponds to a slot 5 metal lug 100.

As can be seen in FIG. 11, the housing 5 may comprise a groove 11 formed at the bottom of the housing 5 to receive a lug 12, visible in FIG. 15, of the metal lug 100.

The housing 4 is equipped with at least one wire guide 10 which is arranged at the output of the first end 8 of the electrical connector 1. According to various alternative embodiments, the wire guide 10 constitutes the base 2, such that this is visible in these figures 4 and 5, or the wire guide 10 is constitutive of the cover 3. The wire guide 10 is in particular arranged in a protrusion of the housing 4 which allows to slide, block and immobilize the son winding 102 between the stator, having the teeth around which the winding wires fed to the phases wound around the teeth of the stator.

More particularly and as visible in FIG. 5, the wire guide 10 is arranged across at least two winding wires 102 connected distinctly to two adjacent metal lugs 100.

The lid 3, visible in FIG. 4, comprises a first hood portion 14 corresponding to the raised portion 9 of the housing 4 and a second hood portion 15 corresponding to the connecting portion 7 of the housing 4. The first hood portion 14 and the second bonnet portion 15 are preferably formed in respective planes which are parallel to each other.

The first cover portion 14 and the second cover portion 15 forming the cover 3 are made in one piece. It is understood in this that the first hood portion 14 and the second hood portion 15 can be detached from one another only after destruction of the lid 3.

Each housing 5 is delimited at the first end 8 by at least one wall 13 in which a slot forms a wire clamp 25. The wire clamp is more particularly intended to receive a respective winding wire 102 and to limit the movement of this wire. winding wire. According to various variants, the wall 13 is constitutive of the base 2 or the cover 3.

We will now describe in more detail the positioning means and the elastic latching means implemented according to one aspect of the invention for assembling the base and the cover of the housing.

More particularly, the base 2 and the cover 3 comprise at least first positioning means 31 and elastic snap-fastening means 40. Advantageously, the first positioning means 31 and the resilient snap-fastening means are produced by molding base 2 and / or cover 3.

The first positioning means 31 comprise at least one tab 33 formed on the cover 3 and a finger 34 formed projecting from the base 2.

The finger 34 forms a partial extension of the base, in a plane parallel to that in which the cover 3 extends mainly. The tab 33 has a bent part to form a guide path of the finger 34 along the cover 3 between a first pre-assembly position and a second assembly position. In other words, the finger 34 forms a sliding ramp of the bent portion of the tab 33. The operator is made to assemble the housing by sliding the cover 3 on the base 2 from the first end 8 of the connector. The first positioning means are operational from the beginning of this sliding movement in a direction parallel or substantially parallel to the first direction D1, and the elastic latching means 40 are made operational when the cover 3 has reached the end of sliding, in said second assembly position.

More particularly, the cover 3 has a first face 3a, or inner face, facing the base when the housing is assembled and a second face 3b, or outer face. The second cover portion 15, corresponding to the portion of the cover 3 formed in the connecting portion, has two first positioning means 31, respectively arranged on one of the corners formed at the first end 8 of the connector. These first positioning means 31 extend in the extension of the second bonnet portion 15, substantially perpendicular to the plane in which this second bonnet portion is mainly inscribed, and they comprise a bent tab 33 which extends along the length of the bonnet portion 15. first face 3a, or inner face, of the cover towards the end opposite to the first end 8 of the connector. In this way, the tab 33 and the first face 3a of the cover define the guide path of the finger 34.

It can be provided, as is particularly visible in Figure 10, that the guide face of the lug 33, that is to say the face which is opposite the lid 3, is notched. When assembling the cover on the base, the force given by the operator to slide the cover and the flexibility of the tab 33 that the notches made on this guide face are not a drag brake. By cons, once assembled, this notched face participates in maintaining the lid in position on the base.

Each metal lug housing 5 extends primarily in an elongation direction and the guide path defined by the first positioning means 31 extends along this elongation direction. It is understood in this that the direction of elongation of the housing 5 and the guide path are parallel, or even merged.

As illustrated, the housing 4 of the connector additionally comprises second positioning means 32, which are complementary to the first positioning means 31. More specifically, these second positioning means 32 are arranged in the cover 3 at the level of the first cover portion 14, that is to say the portion of the cover that overlaps the raised portion 9 of the connector. This ensures that the guiding of the sliding of the cover on the base during the assembly operation of the housing is performed both at the connecting portion at the level of the raised portion. The second positioning means 32 here consist of a dropped edge which extends substantially perpendicularly to an edge of the lid 3 and against which the base 2 abuts during assembly.

The resilient snap-fastening means 40 are configured to deform, at first, by moving away from their original position during the sliding movement of the cover along the base in order to obtain the assembly position, and to resume their original position in a second time and come to grip a rim 42 of the base 2.

The resilient latching means 40 comprise at least one flexible tongue 41 formed projecting from an edge of the lid, at a second end 8 ', opposite the first end 8 of the electrical connector. The flexible tongue comprises a latching head 410 here taking the form of an inclined plane allowing the return of the flexible tongue to its original position in a progressive manner when the tongue protrudes from the rim 42 arranged on the base 2 at the level of this second end. The sliding movement of the cover causes the flexible tongue to move beyond the flange 42 and the latter tends to return to its original position, a straight edge of the detent head, arranged at the end of the inclined plane, preventing the release and allowing the elastic snap once the tongue returned to its original position. It is understood from the foregoing that the elastic latching means are configured to bear, in the second assembly position, against the flange 42 by defining a contact surface perpendicular to the sliding direction of the lid, that is, that is, the guide direction of the finger 34 in the tab 33 of the first positioning means 31.

In this final position, the latching means allow the locking of the cover on the base in the second direction D2, and in the opposite direction of sliding along the first direction Dl. The first positioning means provide a stop of the tab 33 on the finger 34 blocking in the sliding direction along the first direction Dl and the second positioning means here provide locking in a third direction perpendicular to the first and second directions.

In the example illustrated in Figures 2 to 12, the first positioning means 31 are arranged in the connecting portion 7 while the second positioning means 32 and the elastic latching means 40 are arranged in the raised portion 9.

We will now describe a first variant and a second variant respectively illustrated in Figures 13 and 14, which differ from what has been previously described mainly by the configuration of the positioning means and resilient latching means.

More particularly, the electrical connector according to one of these two variants comprises first positioning means substantially identical to what has been previously described in that they consist of the combination of a tab 33 carried by the cover and a finger 34 arranged projecting from an edge of the base, the tab 33 being bent to form a guide path of the finger 34, substantially parallel to the main direction of elongation of the recesses formed in the connector housing. The resilient latching means 40 consist as previously in an elastically deformable element during assembly to resume an original position in which this flexible member encloses a flange formed on the base.

In each of these two variants, the cover 3 is configured to cover only the connecting portion 7 of the housing 4 while the raised portion 9 has a closure wall 92 secured to the base 2. Thus the connecting portion 7 and the portion 9 are respectively closed by the cover 3 and the closure wall, this closure wall 92 being provided with through holes 90 allowing the passage of the connection pins to the printed circuit board in a second direction D2. In this case, the cover 3 may comprise an abutment wall 26 brought to come into contact with the raised portion 9 in the second assembly position. As a result, the elastic latching means are arranged at the connection portion and no longer at the level of the raised portion as previously described, and the second positioning means previously provided for guiding the cover at the level of the elevated portions are no longer necessary. The edge 142, formed on the base and intended to be gripped by the resilient snap-fastening means, is disposed at the level of the connecting portion 7.

Furthermore, in the first embodiment, the resilient latching means differ in that they are configured to deform apart in contact with the base during the insertion of the finger 34 in the tab 33 of the first means of positioning 31 and to resume their original position by an action of an operator in a direction perpendicular to the insertion direction of the finger in the tab. In this first embodiment, the elastic latching means are configured to bear, in the second assembly position, against a wall of the base, this time defining a contact surface parallel to the finger guiding direction in the leg of the first positioning means.

As illustrated in FIG. 13, the resilient snap-fastening means 40 comprise an angled leg 43 defining a receiving zone of a second rim 142 of the base 2. When the lid is placed on the base, the leg 43 bears on the upper face of the finger 34 and is caused to deform elastically in a direction perpendicular to the plane defined by the upper face of the finger. In this first variant, the bent portion of the leg is always resting on the upper face of the finger when the finger is at the end of stroke within the guide path formed by the leg 33, and it is therefore appropriate to move away from the case, so that it can return to its original position as soon as it is no longer in contact with the finger. The free end thereof forms the flange 142 which engages in the housing defined by the bent portion of the leg 43.

In the second variant illustrated in Figure 14, the resilient latching means 40 are configured to be operative in the same movement as that achieved to cooperate the finger 34 and the tab 33 of the first positioning means. The resilient snap-fastening means 40 have a smaller bulk than that described for the first variant, with a tongue 41, formed in the extension of the wall of the lid 3 in the connecting portion 7, and a latching head 410 formed of end of this tongue and having a straight edge forming a shoulder to bear against the flange 142 of the base 2 when the tongue has returned to its original shape. It is understood that in this variant, the snap fastening is simple and fast, the operator having only to introduce the finger 34 into the tab 33 and push the cover until the abutment wall 26 comes into contact with the raised portion 9, the detent head automatically returning to its original shape when it is no longer in contact with the flange 142. However, it should be noted that this elastic snap only provides a partial support of the cover on the base, since it does not prevent a release of the latching head in a direction parallel to the second direction D2. Therefore, it should be noted that the abutment wall 26 cooperates with the raised portion to prevent this movement. At least one receiving cavity, here three cavities, is formed in the raised portion 9, and more particularly in the wall extending perpendicularly to the connecting portion 7, to receive the abutment wall 26 at the end of the guiding stroke of the finger 34. The receiving cavity thus has edges blocking the abutment wall and thus the cover 3 in each of the directions perpendicular to this guide direction of the first positioning means 31.

A third variant, illustrated in FIGS. 16 to 18, differs from the foregoing in that the resilient detent means, in the form of a flexible tongue, are configured to cooperate with a slot in the closure wall of the housing. the base in the raised portion.

In FIG. 16, the cover 3 is fixed on the base 2. This fixing is effected by the action of the first positioning means 31, similar to what could be previously described with a tab 33 secured to the cover 3 configured to cooperate. with a finger 34 integral with the base 2, and elastic latching means 40. These resilient latching means comprise a flexible tongue 41 formed by cutting the upper wall 36 of the lid 3, that is to say the wall of the cover brought to cover the base 2 in the connecting portion 7, and a detent head 410 formed at the end of the flexible tongue.

As can be seen in this figure 16 as well as in FIG. 17, the ratchet head 410 is specific in this embodiment by its orientation with respect to the upper wall 36 of the cover 3. More particularly, this upper wall 36 has a first face facing the metal lugs arranged in the housing 5 (visible in Figure 18) and a second face 30 opposite to these lugs, and the latching head 410 extends in projection of the flexible tongue 41 on the side of this second face 30.

Furthermore, the latching head 410 here has a shape and dimensions configured to cooperate with a slot 94 formed in the closure wall 92 integral with the base. In the illustrated example, the light 94 and the ratchet head 410 respectively have a rectangular shape, and the ratchet head is dimensioned to be slightly smaller than the light 94 to be able to enter this clearance zone thus formed by the light 94.

In FIG. 17, the cover 3 is more particularly illustrated, making it notably visible that, on either side of the flexible tongue 41, two side portions 38 are formed.

These side portions 38 carry at a first end relative to the direction D1, that is to say on the side of the first end 8 of the electrical connector, the tab 33 forming part of the first positioning means 31. At the opposite second end these side portions 38 are provided with a wall 39 projecting from the cover in a manner similar to the abutment walls 26 of the first and second variants previously described. In the illustrated example, these walls 39 are housed in a recess 96 formed appropriately in the base 2, between the connecting portion 7 and the closure wall 92 of the raised portion 9, without necessarily coming into abutment. These walls 39 then have only sealing effect of the housing, the longitudinal stop being made elsewhere at the first end of the side portions 38 and the base 2.

In this third embodiment, as is particularly visible in FIG. 17, the lateral parts and the flexible tongue are arranged on the cover so as to be offset in the direction of projection of the latching head 410 and the walls. 39. More particularly, the flexible tab 41 and the latching head that it carries are further from the housing when the lid is attached to the base than are the side parts and their wall 39, and therefore this tongue and this latching head are closer to the closure wall 92 of the raised portion 9 than are the side portions and their wall when sliding the cover on the base between the pre-assembly position and the assembly position. As a result, the passage formed under the closure wall 92 for the flexible tongue 41 is small and smaller than the protruding dimension of the detent head.

Therefore, during the sliding of the cover, the latching head 410 comes into contact with the end edge of the closure wall defining the clearance 96 and this sliding movement then causes in the continuity elastic deformation of the tongue flexible so that the latching head can pass under the closure wall. The sliding continues until the ratchet head 410 arrives at the clearance zone formed by the light 94. The tongue returns to its original shape, and the ratchet head is locked inside. light, especially by abutment of a flange 42 involved in delimiting the light 94. The invention which has just been described through various embodiments can not however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configurations and any technically operating combination of such means.

Claims (5)

An electrical connector (1) comprising a base (2) and a cover (3) which together form a housing (4) delimiting at least one metal terminal housing (5), characterized in that the base (2) and the cover (3) comprise at least first positioning means (31) and elastic latching means (40), the first positioning means (31) comprising at least one lug (33) formed on the cover (3) and a finger (34) projecting from the base (2), said tab (33) having a bent portion to form a guide path of the finger (34) along the cover (3) between a first pre-assembly position and a second assembly position, and the resilient latching means (40) being configured to be operative when the lid (3) is in said second assembly position. 2. An electrical connector (1) according to claim 1, wherein the elastic latching means (40) are configured to deform away from their original position and engage with a wall of the base (2). resuming their original form. 3. Electrical connector (1) according to claim 1 or 2, wherein the resilient latching means (40) are configured to bear, in the second assembly position against a rim (42, 142) of the base (2) defining a contact surface perpendicular to the guide direction of the finger (34) in the tab (33) of the first positioning means (31). 4. Electrical connector (1) according to claim 3, wherein the resilient latching means (40) comprise a flexible tongue (41) formed of a detent head (410) configured to bear against said flange (42). , 142) by return of the flexible tongue in its original form. 5. Electrical connector (1) according to claim 1 or 2, wherein the resilient latching means (40) are configured to bear, in the second assembly position, against a wall of the base by defining a surface of contact parallel to the guide direction of the finger (34) in the tab (33) of the first positioning means (31). 6. Electrical connector (1) according to claim 5, wherein the elastic latching means (40) comprise a leg (43) bent defining a receiving zone of a flange (142) of the base (2). Electrical connector (1) according to any one of the preceding claims, wherein the first positioning means (31) are arranged at a first end (8) of the electrical connector and in which the resilient detent means (40). are arranged at a second opposite end (8 '). 8. Electrical connector (1) according to any one of the preceding claims, wherein the housing (4) is stepped so as to comprise a connecting portion (7), which defines a first portion of the housing (5) and which is open in a first direction (D1) at a first end (8) of the electrical connector (1) for connection of the terminal to a winding wire (102), and a raised portion (9) which defines a second portion of the housing (5) and which is open in a second direction (D2) for the connection of the terminal to an electrical connection pin of a plate (6) of printed circuits. 9. Electrical connector (1) according to claim 8, wherein the first positioning means (31) are arranged in the connecting portion (7). 10. Electrical connector (1) according to any one of claims 8 or 9, wherein the resilient latching means (40) are arranged in the raised portion (9). 11. Electrical connector (1) according to any one of claims 8 to 10, wherein the base (2) and the cover (3) comprise at least one second positioning means (32) formed in the raised portion (9). . 12. Electrical connector (1) according to one of claims 8 to 11, wherein the cover (3) comprises a first bonnet portion (14) corresponding to the raised portion (9) of the housing (4) and a second portion cover (15) corresponding to the connecting portion (7) of the housing (4). 13. Electrical connector (1) according to one of claims 8 to 11, wherein the cover (3) is configured to cover only the connecting portion (7) of the housing (4), said raised portion (9) having a closing wall (92) integral with the base (2). 14. The electrical connector (1) according to the preceding claim, in combination with claim 4, wherein the detent head (410) protrudes from the free end of the flexible tongue (41) to the opposite the base (2), and wherein the detent head is configured to cooperate with a slot (94) formed in said closure wall (92) in said second assembly position. An electric compressor (17) comprising an electrical connector (1) according to any one of the preceding claims.