Electrical contact for male electrical connector

Abstract

The invention relates to an electrical contact for a male electrical connector (100), the electrical contact (103a, 103b) comprising an electrical contact pin (107a, 107b) and an O-ring (109a, 109b), the pin (107a, 107b) comprising a first portion (201), a second portion (205), and, between the first portion (201) and the second portion (205), a narrowed portion (203) adapted to receive an O-ring (109a, 109b), the O-ring (109a, 109b) being arranged at the pin (107a, 107b) so as to be received in the narrowed portion (203). The invention also relates to an electrical contact pin (107a, 107b), a connector housing (101), and a male electrical connector (100). Figure 1

Description

Title of the invention: Electrical contact for male electrical connector

[0001] The present invention relates to an electrical contact for a male electrical connector. The invention also relates to an electrical contact pin, a connector housing, and a male electrical connector.

[0002] In the field of electrical connectors, it is known to provide an electrical connector, called a male electrical connector, comprising at least one electrical contact pin, and a mating electrical connector, called a female electrical connector, comprising at least one mating electrical terminal, for example an electrical contact terminal. Generally, an electrical contact pin comprises a first portion configured to establish electrical contact and arranged at a first end of the pin, and a second portion configured for connection of the pin to an electrical conductor and arranged at a second end of the pin. Typically, the first portion may have, in a plane orthogonal to the direction of elongation of the pin, a rectangular section.

[0003] In order to seal the arrangement of an electrical contact pin in a male electrical connector housing, some solutions provide for providing the electrical contact pin with a rectangular gasket, the rectangular gasket being molded to have a specific shape approved to the corresponding rectangular section of the first part. Thus, each type of rectangular section requires a corresponding rectangular gasket. Other, even more expensive solutions provide for potting the pin installed in its male electrical connector housing.

[0004] In view of the above, the object of the present invention is to propose an improved solution for sealing a male electrical connector with an electrical contact pin of rectangular section.

[0005] The object of the invention is achieved by means of an electrical contact for a male electrical connector according to the present invention. The electrical contact according to the invention comprises an electrical contact pin and an O-ring. The pin comprises a first portion configured to establish electrical contact with a mating electrical terminal, the first portion being arranged at a first end of the pin and having, in a plane orthogonal to the direction of elongation of the pin, a rectangular section. The pin also comprises a second portion configured for connection of the pin to an electrical conductor, the second portion being arranged at a second end of the pin opposite the first end. The pin further comprises, between the first portion and the second part, a narrowed portion adapted to accommodate an O-ring. The O-ring is arranged at the pin so as to be accommodated in the narrowed portion.

[0006] By configuring the electrical contact pin with a narrowed portion adapted to accommodate an O-ring, the electrical contact pin can be provided with an O-ring despite the rectangular section of its first portion. Thus, the risks associated with installing the O-ring on the rectangular section of the first portion, in particular the risk of damage to the O-ring by an edge of the rectangular section pin, and the risk of loss of sealing at the side faces of the rectangular section pin, are reduced or even eliminated.

[0007] The present invention therefore provides a sealing solution for a rectangular section pin that is less expensive than those known from the state of the art, without risking a deterioration in durability or a loss in sealing performance. On the contrary, the present invention may even allow an increase in sealing performance compared to more expensive state-of-the-art solutions.

[0008] According to one aspect of the invention, the narrowed portion may have, in a plane orthogonal to the direction of elongation of the pin, a rounded section having a shape configured to be matched by an O-ring. In this configuration, the narrowed portion is even better adapted to house the O-ring in a sealed manner.

[0009] According to one aspect of the invention, the narrowed portion may have an oval section or an elliptical section or a section having two parallel sides which connect together two arcs arranged at the opposite ends of the parallel sides. In particular, the arcs may be two circular arcs, for example semicircles. According to another aspect of the invention, the narrowed portion may have a section having four parallel sides in pairs, which connect together four arcs, in particular four quarter-circle arcs, arranged at the intersections of the four parallel sides in pairs. The O-ring housed in the narrowed portion can then even better match the shape of the section of the narrowed portion and improve the sealing of the O-ring housing in the narrowed portion.

[0010] According to one aspect of the invention, the pin may comprise, in a first side of the pin corresponding to a first extension of the rectangular section of the first portion, a first notch, and, in a second side of the pin opposite the first side, a second notch opposite the first notch, the first and second notches together forming the narrowed portion. The first extension of the rectangular section may correspond to a thickness of the first portion of the electrical contact pin. By forming two opposite notches, a narrowed portion may be obtained which can house the O-ring more reliably than, for example, with only one notch. In particular, in this configuration, movement of the O-ring along the direction of pin elongation may be blocked.

[0011] According to one aspect of the invention, the first notch and / or the second notch may have a depth between 100% and 300%, preferably between 150% and 250%, of the first extension of the rectangular section of the first part. With notches of this depth, the housing of the O-ring may be sufficiently reliable so as not to risk its displacement along the direction of elongation of the pin, without compromising the structural integrity of the pin and / or the elasticity of the O-ring.

[0012] According to one aspect of the invention, the first notch and / or the second notch may have a depth between 10% and 40%, preferably between 20% and 30%, of a second extension, preferably orthogonal to the first extension, of the rectangular section of the first part. The second extension of the rectangular section may correspond to a width of the first part of the electrical contact pin. For example, when the electrical contact pin is of the tab type, the first extension, i.e. the thickness, may be less, in particular less than 80%, than a second extension orthogonal to the first extension, i.e. the width. In this configuration also, the housing of the O-ring may be more reliable without compromising the integrity of the electrical contact.

[0013] According to one aspect of the invention, the edges of the first notch and / or the second notch may be rounded, in particular rounded according to an oval or elliptical or circular arc. This can reduce the risk of weakening the O-ring when it is installed on the spindle in order to be housed in the narrowed portion.

[0014] The present invention also relates to an electrical contact pin for an electrical contact according to one of the aspects described above. The pin comprises a first portion configured to establish electrical contact with a counterpart electrical terminal, the first portion being disposed at a first end of the pin and having, in a plane orthogonal to the direction of elongation of the pin, a rectangular section, a second portion configured for connection of the pin to an electrical conductor, the second portion being disposed at a second end of the pin opposite the first end, and, between the first portion and the second portion, a narrowed portion adapted to accommodate an O-ring. This pin can be implemented in an electrical contact according to one of the aspects described above, and thus benefit from the respective advantages of the aspects of the electrical contact.

[0015] The invention further comprises a connector housing for a male electrical connector, the housing forming a cavity configured to house an electrical contact according to one of the aspects described above, and having a first face comprising an opening leading to the cavity, the opening having a rectangular section configured to receive the electrical contact pin of the electrical contact. The connector housing comprises a protruding portion extending along a periphery of the opening and having a shape configured to be matched by an O-ring housed in the constricted portion of the pin, so as to form a sealing seat. By virtue of the protruding portion and the sealing seat, the positioning of the O-ring housed in the constricted portion can be additionally secured.

[0016] The object of the invention is further achieved by means of a male electrical connector, comprising such a housing, and an electrical contact according to one of the aspects described above, the pin being housed in the cavity so that the second part is arranged inside the housing and the first part is arranged outside the housing, and the O-ring being housed in the sealing seat of the housing so as to match the shape of the projecting part extending along a periphery of the opening.

[0017] Thus, the installation of the electrical contact pin in the connector housing can be made waterproof more quickly and less expensively compared to prior art solutions, without losing waterproof performance.

[0018] According to one aspect of the invention, the male electrical connector may comprise a retention element enveloping the electrical contact pin and fixed on the protruding portion so as to close the interior space formed by the protruding portion. This may further secure and seal the installation of the electrical contact in the connector housing.

[0019] According to one aspect of the invention, the retaining element may be fixed at an outer surface of the protruding portion, in particular by a form-fitting means. This makes it possible to manually lock the electrical contact by means of the retaining element and in particular to visually check the locking state.

[0020] The objects, characteristics and advantages of the invention as set forth above will be more fully understood and appreciated by studying the following more detailed description of embodiments of the invention, with the aid of the accompanying drawings.

[0021] [Fig.l] shows an exploded view of a male electrical connector according to the invention.

[0022] [Fig.2] shows a perspective view and a close-up view of a spindle of electrical contact for the connector of [Fig.l].

[0023] [Fig.3] shows a sectional view of the electrical connector of [Fig.l] in an assembled state.

[0024] [Fig.4] shows a sectional view of a portion of the electrical connector of [Fig.l] in an assembled state.

[0025] The technical characteristics and associated advantages of the embodiments described below can be freely combined one by one or adapted to particular embodiments, to the extent that the spirit of the invention as described above is respected.

[0026] In the following, identical reference signs in the figures and the description are used to designate elements of the same nature. Unless otherwise explained in the text, the objects illustrated in the figures are neither to scale relative to each other, nor to scale in their Cartesian dimensions relative to each other.

[0027] [Fig.l] shows an exploded view of a male electrical connector according to a first embodiment of the invention. According to this first embodiment, the electrical connector 100 is a power connector for a vehicular application, in particular in the field of electric automobiles. The electrical connector 100 comprises a connector housing 101, two identical electrical contacts 103a, 103b and two identical retention elements 105a, 105b. In this embodiment, the two electrical contacts 103a, 103b are mutually identical, and the two retention elements 105a, 105b are also mutually identical. Only one electrical contact 103a and one retention element 105a will therefore be described in the following. Each electrical contact 103a, 103b includes an electrical contact pin 107a, 107b and an O-ring 109a, 109b.

[0028] The connector housing 101, the electrical contacts 103a, 103b and the electrical contact pins 107a, 107b are described in the following as parts of the electrical connector 100 according to the first embodiment of the invention. It should nevertheless be noted that the connector housing 101 is also a connector housing for a male electrical connector according to a second embodiment of the invention, and each electrical contact 103a, 103b is also an electrical contact for a male electrical connector according to a third embodiment of the invention. Similarly, each electrical contact pin 107a, 107b is also an electrical contact pin according to a fourth embodiment of the invention.

[0029] The connector housing 101 is made of elastomer so as to form, for each electrical contact 103a, 103b, a cavity configured to house said respective electrical contact 103a, 103b, as illustrated in particular in [Fig. 3]. The housing 101 has a first outer face 111 comprising, for each electrical contact 103a, 103b, an opening leading to a respective one of said cavities, as illustrated in [Fig. 3]. The housing 101 comprises, for each electrical contact 103a, 103b, a projecting portion 113a, 113b projecting from the first face 111 towards the outside of the housing 101, in a direction 115 of connection of the connector 100. Each projecting portion 113a, 113b extends along a periphery 117a, 117b of a respective one of said openings, thus forming a closed border around each of the openings.

[0030] Each of the protruding portions 113a, 113b comprises a plurality of, here two, fixing elements for fixing a retention element, such as one of the elements retention 105a, 105b. In this embodiment, the securing elements are projections 119a, 119b formed on an outer surface 121a, 121b of a respective protruding portion 113a, 113b. The projections 119a, 119b are configured as form-fitting means for securing a retention element 105a, 105b to the respective protruding portion 113a, 113b. In detail, each projection 119a, 119b is configured to elastically deflect a respective leg 123a, 123b, 123c, 123d of a retention element 105a, 105b upon installation of said retention element 105a, 105b until a housing of a hook 125a, 125b of the leg 123a, 123b behind the projection 119a, 119b creates a positive engagement. This positive engagement will be further described with reference to [Fig.3].

[0031] An electrical contact pin 107a for the connector 100 is now described with reference to [Fig. 2]. The pin 107a is a metal part, preferably of a copper alloy, extending in a direction of elongation 200. The pin 107a comprises, in the direction of elongation 200, a first portion 201, a narrowed portion 203, and a second portion 205. The narrowed portion 203 is arranged, i.e. interposed, between the first portion 201 and the second portion 203, and adapted to house an O-ring 109a, 109b. The first portion 201 is disposed at a first end 207 of the pin 107a and the second portion is disposed at a second end 209 of the pin 107a, the second end 209 being opposite the first end 207.

[0032] The electrical contact pin 107a is a tab-type pin stamped from a metal sheet, here copper alloy. Alternatively, the pin 107a can also be manufactured by milling. The first part 201 of the pin 107a has, in a plane orthogonal to the elongation direction 200, a rectangular section. Said rectangular section has a first extension 211 and a second extension 213 orthogonal to the first extension. The first extension 211 corresponds to the thickness of the pin 107a at the first part 201, and in particular to the thickness of the metal sheet used. The second extension 213 corresponds to the pin width 107a at the first portion 201. In this embodiment, the second extension 213 is at least 6 times, preferably between 7 and 10 times, larger than the first extension corresponding to the thickness 211 of the pin 107a.

[0033] In this embodiment, the thickness of the pin 107a is substantially uniform along the elongation direction 200. The width of the pin 107a is not uniform, and in particular, the second extension 213, i.e. the width of the pin 107a at the first portion 201, is 3% to 10% greater than the width of the pin 215 at the second portion 205.

[0034] The first portion 201 is configured to make electrical contact with a mating electrical terminal when the male electrical connector 100 is connected. with a mating female electrical connector. The second part 205 is configured for connection of the pin 107a to an electrical conductor, in particular for crimping or welding with a conductive core of a cable.

[0035] The second portion 205 further comprises a central rectangular perforation 217. A portion of the second portion 205 adjacent to the central rectangular perforation 217 is partially cut out and deflected relative to the remainder of the second portion 205 in order to create a locking tab 219 for locking the pin 107a in the housing 101. The locking of the pin 107a by means of the locking tab 219 will be more fully described in connection with [Fig. 3].

[0036] A first notch 221 is formed, between the first part 201 and the second part 205, in a first lateral side 223 of the pin 107a, between the first part 201 and the second part 205. A second notch 225 is formed opposite the first notch 221, also between the first part 201 and the second part 205, in a second lateral side 227 of the pin 107a opposite the first lateral side 223. The first and second lateral sides 221, 223 correspond to lateral sides of thickness, that is to say of first extension 211, of the pin 107a. Together, the first notch 221 and the second notch 223 form the narrowed portion 203. Thus, the narrowed portion 203 has a thickness corresponding to the first extension 211 and a width 229 less than the width 213 of the first portion 201 and the width 215 of the second portion 205.

[0037] The edges of the notches 221, 225 are machined so as to round them. Thus, the narrowed portion 203 has a width section 229, that is to say in a plane orthogonal to the direction of elongation 200, which is rounded. The shape of the rounded section will be more fully described with reference to [Fig.4]. [Fig.2] includes a close-up view of the pin 107a at the first notch 221 which illustrates that an edge 231 of the notch 221 extending in a direction parallel to the direction of elongation 200 are rounded, and that edges 233, 235 of the notch 221 extending in a direction orthogonal to the direction of elongation 200 are also rounded. By virtue of the rounded edges 231 of the narrowed portion 203, an O-ring, such as the seals 109a, 109b, can be housed in the narrowed portion 203 so as to match the shape of the rounded section of the narrowed portion 203.That is, the rounded shape of the section of the narrowed portion 203 in width 229 is configured to be matched by an O-ring 109a, 109b.

[0038] In this embodiment, the edges 231, 233, 235 are rounded here in an elliptical manner. In variants, the edges 231, 233, 235 can also be rounded in an oval or circular manner. The rounding of the edges 231, 233, 235 therefore corresponds to a separate or additional step to a possible chamfering of the edges of the pin 107a, as illustrated in [Fig. 2] by means of the chamfers 237.

[0039] In the present embodiment, the notches 221, 225 have a depth 237, in a direction orthogonal to the elongation direction 200, comprised between 10% and 40%, preferably between 20% and 30%, of the second extension 213 of the first part 201. Similarly, the depth 237 of the notches 221, 225 is furthermore comprised between 100% and 300%, preferably between 150% and 250%, of the thickness, that is to say of the first extension 211, of the first part 201.

[0040] [Fig.3] shows a sectional view of the male electrical connector 100 in a state assembled, according to the cross-sectional line 127 shown in [Fig.l]. The electrical contact 103a is installed in the connector housing 101. In detail, the electrical contact pin 107a is housed in a cavity 301 and configured to receive the pin 107a, such that the second part 205 is arranged inside the cavity 301, and the first part 201 is arranged outside the cavity 301 and the housing 101.

[0041] For this, the pin 107a is inserted, in an insertion direction 300 parallel to the elongation direction 200 and opposite to the connection direction 115, into the cavity 301 through an opening 303 in the first face 111 of the housing 107. In order to be able to accommodate the pin 107a in the insertion direction without losing sealing, the opening 303 has a rectangular section having substantially the dimensions of the second part 205 of the pin 107a, in particular the thickness 211 and the width 215.

[0042] By inserting the pin 107a through the opening 303, the locking tab 219 is resiliently deflected until it has passed the opening 303, then returning to its transverse resting state and thereby positively engaging an inner edge 305 of the housing 101.

[0043] The protruding portion 113a, extending along the periphery 117a of the opening 303, is formed such that an outer surface 121a of the protruding portion 113 includes the projections 119a, 119c. Furthermore, the protruding portion 113a is formed such that an inner surface 307 of the protruding portion 113a defines an interior open space 309. The space 309 is a sealing seat for the O-ring 109a, as described hereinafter with reference to [Fig.4].

[0044] [Fig.3], like [Fig.l], shows the electrical contact 103a in an assembled state, in which the electrical contact pin 107a is provided with an O-ring 109a. The O-ring 109a is housed in the narrowed portion 203 of the pin 107a. For this, the O-ring 109a is elastically expanded and threaded over the first portion 201 until said O-ring 109a returns to a more contracted rest state at the notches 221, 225. Here, the O-ring 109a is a rubber O-ring, for example of the vinyl-methyl-siloxane (VMQ) type or of the ethylene-propylene-diene monomer (EPDM) type.

[0045] The connector 100, as illustrated in [Fig. 3] in its assembled state, comprises the retention member 105a comprising a central portion 311, from which the legs 123b, 123d extend. Each leg 123b, 123d comprises a hook 125b, 125d arranged at a respective leg 123b, 123d end. The central portion 311 comprises a through slot 313 having substantially the dimensions of the rectangular section of the first portion 201 of the electrical contact pin 107a, in particular the thickness 211 and the width 213. Thus, the retention element 105a is configured to be threaded over the first portion 201 of the pin 107a, through the through slot 313 passing through the central portion 311.

[0046] When the retention element 105a is threaded onto the pin 107a, the legs 123b, 123d may be brought closer to the protruding portion 113a and resiliently deflected over the projections 119a, 119c, in order to create a positive engagement between the projections 119a, 119c and the hooks 125b, 125d once the projections 119a, 119c are passed. The hooks 125b, 125d and the projections 119a, 119c are complementary elements of a form-fitting means for securing the retention element 105a at the connector housing 101.

[0047] Thus, the retaining element 105a envelops the pin 107a and in particular the narrowed part 203 of the pin 107, and is fixed on the projecting part 113a. The central part 311 closes, in particular blocks, the open interior space 309 of the sealing seat, thus increasing the sealing of the installation of the electrical contact 103 and securing the contact 103a.

[0048] [Fig.4] shows a sectional view of the male electrical connector 100 along the line of cross-section 315 of [Fig. 3]. Specifically, [Fig. 4] shows a cross-section of the connector 100, in an assembled state, at its projecting portion 113a. Thus, a section of the O-ring 109a and a section 400 of the pin 107a are illustrated. The section 400 of the pin 107a is a section in a plane orthogonal to the direction of elongation 200 of the pin 107a.

[0049] As also described with reference to [Fig. 2], the narrowed portion 203 is machined so as to have a rounded section 400. In particular, [Fig. 4] shows that the rounded section 400 is, in the present embodiment, a stadium-shaped section, i.e., a section 400 having two parallel sides 401a, 401b which connect together two elliptical arcs 403a, 403b arranged at the opposite ends of the parallel sides 401a, 401b. Here, the arc 403b corresponds to the edge 231 of [Fig. 2]. Alternatively, section 400 may also have four pairwise parallel sides, which connect together four quarter-circle arcs, arranged at the intersections of the four pairwise parallel sides.

[0050] Thanks to the rounded section 400, the narrowed portion 203 is particularly suitable for housing the O-ring 109a. In particular, the section 400 has a configured shape to be matched by the O-ring 109. Here, the pin 107a is provided with the O-ring 109a housed in the narrowed part 203, the O-ring 109a matching the section 400, that is to say the contour, of the narrowed part 203.

[0051] In this configuration, the O-ring 109a can seal the insertion of the pin 107a into the opening 303a, without losing sealing performance or durability due to the rectangular section of the first portion 201 of the pin 107a. In other words, the radial sealing performance and cost effectiveness of the O-ring is suitable for a male electrical connector with rectangular section pins. Thus, the present invention provides an improved solution for sealing the installation of rectangular section pins in an electrical connector housing. As an example, sealing performance up to IP54 can be achieved using a conventional O-ring.

[0052] The inner surface 307 of the protruding portion 113a which provides the open interior space 309 has a shape which is configured to be matched by the O-ring 109a. In particular, in a plane orthogonal to the insertion direction 300, the open interior space 309 has a section having a stage shape corresponding to the shape and thickness 405 of the seal 109a when housed in the narrowed portion 203. That is, the protruding portion 113a is molded to envelop the O-ring 109a so that the O-ring 109a sealingly fits the interior surface 307. Thus, as illustrated in [Fig. 4], the O-ring 109a is housed in the seal seat 309 of the housing 101 so as to fit the shape of the protrusion 113a. The sealing performance of the connector 100 is then improved, and the O-ring 109a is protected from environmental externalities.

[0053] In variants of the connector 100, the male electrical connector of the invention may comprise only a single electrical contact. Alternatively, the male electrical connector may comprise a plurality, for example 3, 6 or 8, electrical contacts. In other variants, the electrical connector may not comprise a retention element such as the retention elements 105a, 105b. In other variants, a locking means for the contact pins 107a, 107b different from, or additional to, the present locking tab system 219 is conceivable.

[0054] Reference signs 100 male electrical connector 101 connector housing 103 a, 103b electrical contact 105 a, 105b retention element 107 a, 107b contact pin 109a, 109b O-ring 111 first side of the case 113a, 113b protruding part on the first face 115 connection direction 117a, 117b around an opening 119a, 119b, 119c projection on a protruding part 121a, 121b outer surface of a projecting part 123a, 123b, 123c, 123d leg of a retention element 125a, 125b, 125c, 125d one leg hook 127 cross-section line of [Fig.3] 200 spindle elongation direction 201 first part 203 narrowed part 205 second part 207 first end 209 second end 211 first extension of the section of the first part 213 second extension of the section of the first part 215 perforation in the second part 219 locking tab 221 first notch 223 first lateral side 225 second notch 227 second lateral side 229 width of the narrowed part 231 edge of the longitudinal notch 233 first edge of the orthogonal notch 235 second edge of the orthogonal notch 237 chamfers at the edges of the spindle 239 depth of notches 300 insertion direction 301 cavity in the case 303 opening in the first face of the case 305 inner edge in the case 307 inner surface of the protruding part 309 open interior space defined by the projecting part 311 central part of the retention element 313 through slot in the central part 315 cross-section line in [Fig.4] 400 rounded section of the narrowed part 401a, 401b parallel sides 403a, 403b arcs connecting parallel sides 405 O-ring thickness

Claims

Claims

1. An electrical contact for a male electrical connector (100), the electrical contact (103a, 103b) comprising an electrical contact pin (107a, 107b) and an O-ring (109a, 109b), the pin (107a, 107b) comprising a first portion (201) configured to make electrical contact with a mating electrical terminal, the first portion (201) being disposed at a first end (207) of the pin (107a, 107b) and having, in a plane orthogonal to the elongation direction (200) of the pin (107a, 107b), a rectangular section, a second portion (205) configured for connection of the pin (107a, 107b) to an electrical conductor, the second portion (205) being disposed at a second end (209) of the pin (107a, 107b) opposite the first end (207), and, between the first part (201) and the second part (205), a narrowed part (203) adapted to accommodate an O-ring (109a, 109b), the O-ring (109a,109b) being arranged at the pin (107a, 107b) so as to be housed in the narrowed portion (203).,

2. An electrical contact according to claim 1, the narrowed portion (203) having, in a plane orthogonal to the direction of elongation (200) of the pin (107a, 107b), a rounded section (400) having a shape configured to be matched by an O-ring (109a, 109b).

3. An electrical contact according to claim 2, the narrowed portion (203) having an oval section or an elliptical section or a section (400) having two parallel sides which connect together two arcs, in particular two circular arcs, arranged at the opposite ends of the parallel sides.

4. Electrical contact according to one of claims 1 to 3, comprising, in a first side (223) of the pin (107a, 107b) corresponding to a first extension (211) of the rectangular section of the first part (201), a first notch (221), and, in a second side (227) of the pin (107a, 107b) opposite the first side (223), a second notch (225) opposite the first notch (221), the first (221) and second notches (225) together forming the narrowed part (203).

5. Electrical contact according to claim 4, the first notch (221) and / or the second notch (225) having a depth (239) between 100% and 300%, preferably between 150% and 250%, of the first extension (211) of the rectangular section of the first part (201).

6. Electrical contact according to claim 4 or 5, the edges (231, 233, 235) of the first notch (221) and / or the second notch (225) being rounded, in particular rounded according to an oval or elliptical or circular arc.

7. Electrical contact according to one of claims 4 to 6, the first notch (221) and / or the second notch (225) having a depth between 10% and 40%, preferably between 20% and 30%, of a second extension (213), preferably orthogonal to the first extension (211), of the rectangular section of the first part (201).

8. An electrical contact pin for an electrical contact (103a, 103b) according to one of claims 1 to 7, the pin (107a, 107b) comprising a first portion (201) configured to establish electrical contact with a counterpart electrical terminal, the first portion (201) being arranged at a first end (207) of the pin (107a, 107b) and having, in a plane orthogonal to the direction of elongation (200) of the pin (107a, 107b), a rectangular section, a second portion (205) configured for connection of the pin (107a, 107b) to an electrical conductor, the second portion (205) being arranged at a second end (209) of the pin (107a, 107b) opposite the first end (207), and, between the first portion (201) and the second part (205), a narrowed part (203) adapted to accommodate an O-ring (109a, 109b).

9. A connector housing for a male electrical connector (100), the housing (101) forming a cavity (301) configured to house an electrical contact (103a, 103b) according to one of claims 1 to 7 and having a first face (111) comprising an opening (303) leading towards the cavity (301), the opening (303) having a rectangular section configured to receive the pin (107a, 107b), the connector housing (101) comprising a projecting portion (113a, 113b) extending along a periphery (117a, 117) of the opening (303) and having a shape configured to be matched by an O-ring (109a, 109b) housed in the narrowed portion (203) of the pin (107a, 107b), so as to form a sealing seat (309).

10. Male electrical connector, comprising a housing (101) according to claim 9 and an electrical contact (103a, 103b) according to one of claims 1 to 7, the pin (107a, 107b) being housed in the cavity (301) such that the second part (205) is arranged inside the housing (101) and the first part (201) is arranged outside the housing (101), and the O-ring (109a, 109b) being housed in the sealing seat (309) of the housing (101) so as to match the shape of the projecting part extending along the periphery (117a, 117b) of the opening (303).

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