Connector pin

Abstract

Title: Connector Pin The present invention relates to a connector pin (10) comprising an elongated flat, electrically conductive body (12) and an electrically insulating element (14). At least one protrusion (52) extends from a flat base (50) of a front edge (48) of the elongated flat body (12). The protrusion (52) has a through opening (64). The electrically insulating element (14) covers the front edge (48) and the protrusion (52) so as to fill the through opening (64). The main protrusion (62) may have at least one trapezoidal cross-section in a cutting plane parallel to the flat base (50) of the front edge (48). Fig. 1

Description

Title of the invention: Connector pin

[0001] The present invention relates to a connector pin, in particular to a connector pin having an elongated flat body, as well as to a connector element comprising a housing and a connector pin.

[0002] Electrical connector pins, and in particular flat pins, as well as connector elements, are often used to connect a vehicle's electrical system to its battery or accumulator. This is particularly relevant to electric or hybrid vehicles, which require the transmission of high currents and / or voltages through the connectors, and consequently, through their pins.

[0003] Flat pins offer advantages over round pins, notably the ability to be inserted in two different directions or to be used in right-angle (90°) or straight (180°) connectors. In contrast, round pins require different designs for each type of connector, which increases the complexity of component production.

[0004] Due to the high currents and voltages involved, the connectors must comply with the stringent requirements of standards, for example, IPXXB and / or IPXXB+. These standards require that the connector pins be protected against accidental contact with a human finger or a similar object. These standards are part of the IP (Ingress Protection) classification, which defines the level of protection of equipment against the intrusion of foreign bodies and accidental contact. The IPXXB standard ensures that the contact elements are protected against accidental contact with objects of a size similar to a human finger, for example, a standard test finger 12 mm in diameter and 80 mm long.The IPXXB+ standard is a reinforced version of the IPXXB standard, providing additional protection, notably by increasing the stringency of contact resistance tests and ensuring that protection is maintained even under more demanding mounting or operating conditions. This is particularly relevant in the automotive sector, where vibrations, temperature variations, and other environmental factors can affect the robustness of connector pins and connectors.

[0005] In the prior art, various solutions are employed to prevent accidental contact with connector pins. For example, it is common to install protective collars around the contacts, thus creating insulating barriers that form physical obstacles to prevent direct contact with a human finger.

[0006] US patent 2021257768A1 describes the use of a press-fit insulating member on the mounting portion of a flat connector to cover certain parts of the terminal and limit the risk of direct contact. This solution relies primarily on a press-fit system, but the insulating member may remain vulnerable to unwanted movement in certain directions, particularly under the effect of vibrations. Furthermore, this assembly method leaves a risk of misalignment or gradual displacement of the insulating member over time, which compromises the mechanical stability of the connector pin.

[0007] It is therefore desirable to propose a more robust and reliable solution that reduces the movement of the electrically insulating member in all directions, thereby improving the safety and durability of the connector pins. Advantageously, this solution should be easily adaptable to existing connector pins, while complying with protection standards such as IPXXB and / or IPXXB+.

[0008] The object of the invention is achieved with a connector pin.

[0009] According to a first aspect of the invention, the connector pin comprises a flat body elongated along an insertion direction of the connector pin. The connector pin can be inserted into a conjugate connector along the insertion direction. The flat elongated body is electrically conductive. The flat elongated body comprises two contact surfaces opposite each other. The contact surfaces are respectively connected to each other along the insertion direction by lateral edges. A front edge of the flat elongated body connects the lateral edges. The front edge comprises a flat base perpendicular to the insertion direction. A main protrusion extends from the flat base of the front edge along an insertion direction. The main protrusion comprises at least one through-hole. The connector pin further comprises an electrically insulating element.The electrically insulating element covers the front edge and the main protrusion so as to fill the through opening. The electrically insulating element at least partially covers the lateral edges.

[0010] Thus, the arrangement of the electrically insulating element makes it possible to meet the requirements of protection standards, such as IPXXB and / or IPXXB+. The electrically insulating element specifically covers the critical portions, particularly for compliance with safety standards, of the elongated flat body, ensuring adequate physical insulation to prevent direct contact between a human finger and the electrically conductive elongated flat body of the pin.

[0011] Furthermore, filling the through-hole with the electrically insulating element provides a reinforced grip between the element and the elongated flat body. This improves the durability of the connector pin.

[0012] This arrangement also contributes to better mechanical resistance of the connector pin, in particular because the risk of displacement or disengagement of the electrically insulating element is reduced.

[0013] The connector pin according to the first aspect of the present invention can be further improved by means of the following embodiments.

[0014] According to one embodiment, the main protrusion may have walls extending from the flat base of the front edge inclined along the insertion direction, in particular inclined convergently in the insertion direction.

[0015] The inclined walls of the protrusion provide gripping surfaces that allow the electrically insulating element to adhere more effectively to the metallic surfaces of the elongated flat body. The inclined walls can prevent the electrically insulating element from unintentionally detaching or dislodging due to mechanical forces or vibrations. Thanks to the inclined walls, a better distribution of stress between the elongated flat metallic body and the electrically insulating element, generally made of plastic, can be achieved, thus reducing the risk of cracking in the plastic or deformation in the metal. This contributes to improving the durability of the connector pin.

[0016] According to one embodiment, the electrically insulating element can be formed as a single piece. In other words, the electrically insulating element can be designed as a single piece, without assembling several parts.

[0017] This embodiment provides enhanced structural integrity and eliminates potential junction or weak points. This embodiment reduces the risk of misalignment or displacement of the electrically insulating element. The resulting electrically insulating element is more robust.

[0018] The electrically insulating element can be made of an electrically insulating material, in particular polyamide 66 (PA66) or polybutylene terephthalate (PBT).

[0019] According to one embodiment, the electrically insulating element can be overmolded onto the elongated flat body.

[0020] The connector pin can be obtained by a manufacturing process in which an electrically insulating material is molded onto the elongated flat body. This manufacturing process differs from so-called "press-fit" assembly methods, such as snap-fit, particularly forced snap-fit ​​or press-fit. Overmolding provides a solid connection between the electrically insulating element and the elongated flat body, without requiring additional fastening devices and / or to assemble the components together. Overmolding allows for the complete covering of critical areas, particularly for compliance with safety standards, of the elongated flat body, ensuring adequate physical insulation to prevent direct contact between a human finger and the electrically conductive elongated flat body of the spindle. Overmolding also improves mechanical stability by preventing relative movement between the elongated flat body and the electrically insulating element.

[0021] According to one embodiment, a maximum thickness of the main protrusion can be strictly less than a maximum thickness between the two contact surfaces, the thicknesses being respectively defined along a direction perpendicular to the insertion direction.

[0022] This difference in thickness creates a bearing surface on the flat base of the front edge of the elongated flat body, a surface which is covered by the electrically insulating element. Such a configuration promotes better adhesion of the electrically insulating element to the elongated flat body.

[0023] The maximum thickness between the two contact surfaces can be equal to or less than 5 millimeters, in particular equal to or less than 2 millimeters.

[0024] According to one embodiment, the electrically insulating element can be flush with each of the surfaces of the elongated flat body. In particular, the electrically insulating element can be flush with each of the contact surfaces of the elongated flat body. The electrically insulating element can be flush with each of the lateral edges of the elongated flat body that are not covered by an electrically insulating element.

[0025] This configuration maintains the overall shape of the connector pin, which retains a substantially rectangular form. Geometric continuity is achieved between the electrically insulating element and the contact surfaces and the remaining side walls, minimizing roughness and facilitating the insertion and removal of the pin from a plug or conjugate connector. Furthermore, this configuration reduces the risk of snagging or misalignment without altering the external dimensions of the connector pin. This also ensures improved compatibility with existing connectors and conjugate plugs.

[0026] According to one embodiment, the main protrusion may have at least one trapezoidal cross-section in a cutting plane parallel to the flat base of the front edge, in particular at least one isosceles trapezoidal cross-section in a cutting plane parallel to the flat base of the front edge. In other words, the main protrusion may have a dovetail geometry. The dovetail shape provides a mechanical lock that prevents relative movement between the electrically insulating element and the elongated flat body, thus reinforcing the structural cohesion of the connector pin.

[0027] According to one embodiment, the main protrusion can be formed by a first protrusion and a second protrusion which are partially connected to each other by a connecting portion so as to define the through opening.

[0028] The redundant protrusions on the front edge enhance the mechanical stability of the connector pin. These redundant protrusions also increase the number of support and locking points for the electrically conductive element. This improves the distribution of mechanical stresses across the entire structure. The connecting portion is designed to allow sufficient space between the protrusions to define the through-hole.

[0029] In addition to the through-hole, at least one of the two protrusions, the first or the second, may include a recess, which may be covered by the electrically insulating element. Alternatively, or in combination, at least one of the two protrusions, the first or the second, may include a through-orifice, separate from the through-hole, which may be filled by the electrically insulating element. Filling the recess and / or the through-orifice with the electrically insulating element provides a reinforced grip between the element and the elongated flat body.

[0030] According to one embodiment, the first protrusion, or the second protrusion, or either of the two protrusions, may have a trapezoidal shape in a cutting plane parallel to the flat base of the front edge. In other words, each main protrusion may have a dovetail geometry. The dovetail shape provides a mechanical lock that prevents relative movement between the electrically insulating element and the elongated flat body, thus reinforcing the structural cohesion of the connector pin.

[0031] According to one embodiment, the trapezoidal shape of each of the protrusions can be defined by an isosceles trapezoid in said cutting plane parallel to the flat base of the front edge, the isosceles trapezoid defining a shorter side parallel to a longer side in said cutting plane. The first and second protrusions can be arranged so that, in said cutting plane, each of the shorter sides is parallel to and facing each other.

[0032] The arrangement of the two isosceles trapezoidal protrusions facing each other at their shorter sides creates an effective mechanical lock, thereby increasing resistance to unwanted movement. This arrangement promotes a uniform distribution of mechanical stresses.

[0033] According to one embodiment, the connector pin may include the main protrusion at the front edge and at least a "third" protrusion at a lateral edge. In this embodiment, the main protrusion is not necessarily formed by a first and a second protrusion. The "third" protrusion can then be described as an additional protrusion or a lateral protrusion. Thus, in the context of this description, "third protrusion" refers to a lateral protrusion.

[0034] According to one embodiment, the connector pin may include at least one third protrusion extending at least partially from one of the lateral edges, the third protrusion comprising a through-hole. The electrically insulating element may at least partially cover the third protrusion so as to fill the through-hole.

[0035] This configuration improves the retention of the electrically insulating element along the lateral edges, which are subjected to stress during the insertion and removal of the connector pin from a conjugate plug. Furthermore, by filling the through-hole of the third protrusion with the electrically insulating element, a better grip is achieved between the electrically insulating element and the lateral edge(s) of the elongated flat body. Thus, a reinforced adhesion between the electrically insulating element and the lateral edges of the elongated flat body is obtained.

[0036] According to one embodiment, at least a third protrusion may have a trapezoidal shape in a cutting plane perpendicular to the insertion direction. In other words, the third protrusion may have a dovetail geometry. The dovetail shape provides a mechanical lock that prevents relative movement between the electrically insulating element and the elongated flat body, thus reinforcing the structural cohesion of the connector pin.

[0037] This configuration therefore makes it possible to improve the retention of the electrically insulating element along the lateral edges, which are stressed during the insertion and removal of the connector pin in a conjugate plug.

[0038] According to one embodiment, the first protrusion and the second protrusion can be respectively fully linked to at least one third protrusion, in particular by a beveled corner.

[0039] This configuration improves the structural integrity of the elongated flat body. The beveled corner prevents the formation of sharp angles, which could weaken the structure by creating stress points, or risk damaging the electrically insulating element.

[0040] According to one embodiment, the through-opening can define a rectangular cross-section in a plane parallel to the contact surfaces. The through-opening can thus comprise four internal walls. Each internal wall of the through-opening is in direct contact with the electrically insulating element. This promotes the adhesion of the electrically insulating element. A rectangular opening can distribute mechanical stresses more uniformly. A rectangular opening is simple to make, especially using standard manufacturing processes.

[0041] According to a second aspect of the invention, the connector pin may comprise a flat body elongated along a direction of insertion of the connector pin, the flat body elongated may be electrically conductive, the flat body elongated may comprise two contact surfaces opposite each other, the contact surfaces may be respectively connected to each other along the direction of insertion by lateral edges, a front edge of the flat body elongated may connect the lateral edges, the front edge may comprise a flat base perpendicular to the direction of insertion, a first protrusion may extend from the flat base of the front edge, and the first protrusion may have a trapezoidal shape in a cutting plane parallel to the flat base of the front edge, in particular an isosceles trapezoidal shape in a cutting plane parallel to the flat base of the front edge.The connector pin may further include an electrically insulating element. The electrically insulating element may cover the front edge and the first protrusion. In particular, the electrically insulating element may cover the entire front edge and the first protrusion. The electrically insulating element may at least partially cover the side edges.

[0042] Thus, the arrangement of the electrically insulating element makes it possible to meet the requirements of protection standards, such as IPXXB and / or IPXXB+. The electrically insulating element specifically covers the critical portions, particularly for compliance with safety standards, of the elongated flat body, ensuring adequate physical insulation to prevent direct contact between a human finger and the electrically conductive elongated flat body of the pin. The characteristic of the first protrusion, in particular its specific shape and its position on the front edge of the pin, makes it possible to reduce the displacement of the electrically conductive element relative to the elongated flat body, which contributes to improving the mechanical stability of the connector pin. In addition, the dovetail connection provided by this trapezoidal protrusion on the front edge offers a more secure mechanical locking, limiting unwanted movement in several directions, i.e.e. not only in the insertion direction, particularly under the effect of vibrations. This strengthens the connection between the electrically conductive element and the elongated flat body, thus reducing the risk of misalignment or disengagement of the connector.

[0043] The connector pin according to the second aspect of the present invention can be further improved by means of the following embodiments.

[0044] According to one embodiment, a second protrusion may extend from the flat base of the front edge, and the second protrusion may have a trapezoidal shape in said cutting plane parallel to the flat base of the front edge. The redundancy of the protrusions on the front edge enhances the mechanical stability of the connector pin. By increasing the points of support and locking for the electrically conductive element, the distribution of mechanical stresses across the entire structure can be improved.

[0045] According to one embodiment, each of the protrusions may have the shape of an isosceles trapezoid in said cutting plane parallel to the flat base of the front edge, the isosceles trapezoid defining a short side parallel to a long side in said cutting plane, and the first protrusion and the second protrusion may be arranged so that, in said cutting plane, each of the short sides are parallel to each other and face each other. The arrangement of the two isosceles trapezoidal protrusions facing each other at their shorter sides creates an effective mechanical lock, thus increasing resistance to unwanted movement. This arrangement promotes a uniform distribution of mechanical stresses. It also leaves sufficient space between and around the protrusions to allow the electrically insulating element to make direct contact with the flat base of the front edge, promoting adhesion of the electrically insulating element.

[0046] According to one embodiment, the first protrusion and the second protrusion can be distinct from each other in each cutting plane parallel to the flat base of the front edge. This allows the electrically insulating element to benefit from a larger bearing surface directly in contact with the flat base of the front edge. This can increase the adhesion between the electrically insulating element, usually made of plastic, and the elongated, flat, metallic body.

[0047] According to one embodiment, the first protrusion and the second protrusion can be joined together at their respective short sides in at least one cutting plane parallel to the flat base of the front edge, in particular in each cutting plane parallel to the flat base of the front edge. This allows for the creation of a stronger protrusion structure, which helps to improve the durability of the connector pin.

[0048] According to one embodiment, the first protrusion and the second protrusion can extend from the flat base of the front edge in a single block to a free end of the protrusions, and the block can be provided with an opening, in particular a through opening, which extends in a direction perpendicular to the direction of insertion. The one-piece structure with a through-opening provides increased rigidity and improved mechanical stability. This opening is filled of the electrically insulating element, providing a better grip between the electrically insulating element and the elongated flat body.

[0049] The first protrusion, in particular the first and second protrusions, may have a dovetail geometry. The dovetail shape ensures a mechanical lock that prevents relative movement between the electrically insulating element and the elongated flat body, thus reinforcing the structural cohesion of the connector pin. According to one embodiment, the first protrusion, in particular the first and second protrusions, can extend from the flat base of the front edge so that its walls are inclined, in particular inclined convergently in the direction of insertion. The angled walls provide additional contact surfaces, allowing the electrically insulating element to adhere more effectively to the metal surfaces of the elongated flat body. This prevents the electrically insulating element from unintentionally detaching or dislodging due to mechanical forces or vibrations. The angled walls also enable better stress distribution between the elongated metal body and the electrically insulating element, typically made of plastic, thus reducing the risk of plastic cracking or metal deformation. This improves the element's durability.

[0050] According to one embodiment, a third protrusion may extend at least partially from the lateral edge(s), and the third protrusion may have a trapezoidal shape in a cutting plane perpendicular to the insertion direction. This configuration improves the retention of the electrically insulating element along the lateral edges, which are subjected to stress during the insertion and removal of the connector pin from a conjugate plug.

[0051] According to one embodiment, an opening, in particular a through opening or notch, may be formed between the third protrusion and a base of the, or each, lateral edge and, the opening may extend in a direction perpendicular to the direction of insertion. By filling this opening in the electrically insulating element, a better grip is achieved between the electrically insulating element and the lateral edge(s) of the elongated flat body. This results in a stronger bond between the electrically insulating element and the lateral edges of the elongated flat body.

[0052] According to one embodiment, the first protrusion, in particular each protrusion, can be formed in recess from the flat base of the front edge, in particular in recess from the flat base of the front edge and from a base of each lateral edge. This arrangement creates a bearing surface on each edge of the elongated flat body, thus allowing better adhesion of the electrically insulating element.

[0053] According to one embodiment, the first protrusion and the second protrusion can be respectively fully linked to the third protrusion of each lateral edge, in particular by a beveled corner. This configuration improves the structural integrity of the elongated flat body. The beveled corner prevents the formation of sharp angles, which could weaken the structure by creating stress points, or risk damaging the electrically insulating element.

[0054] According to one embodiment, the electrically insulating element can be formed as a single piece. In other words, the electrically insulating element can be designed as a single piece, without assembling several parts. This embodiment provides enhanced structural integrity and eliminates potential junction or weak points. This embodiment reduces the risk of misalignment or displacement of the electrically insulating element. The resulting electrically insulating element is more robust.

[0055] The electrically insulating element can be made of an electrically insulating material, in particular polyamide 66 (PA66) or polybutylene terephthalate (PBT).

[0056] According to one embodiment, the electrically insulating element can be overmolded onto the elongated flat body. The connector pin can be produced by a manufacturing process where an electrically insulating material is molded onto the elongated flat body. This manufacturing process differs from so-called "press-fit" assembly methods, such as snap-fit, particularly press-fit or snap-fit. Overmolding provides a strong connection between the electrically insulating element and the elongated flat body, without requiring additional fasteners and / or assembling components together. Overmolding allows for the complete covering of critical portions of the elongated flat body, particularly for compliance with safety standards, ensuring adequate physical insulation to prevent direct contact between a human finger and the electrically conductive elongated flat body of the pin. Overmolding also improves mechanical stability by preventing relative movement between the elongated flat body and the electrically insulating element.

[0057] According to one embodiment, the electrically insulating element can be flush with each of the surfaces of the elongated flat body. In particular, the electrically insulating element can be flush with each of the contact surfaces. The electrically insulating element can be flush with each of the lateral edges of the elongated flat body that are not covered by an electrically insulating element. This configuration maintains the overall shape of the connector pin, which retains a roughly rectangular form. Geometric continuity is ensured between the electrically insulating element and the contact surfaces, and the remaining walls. Lateral contours are achieved, minimizing roughness and facilitating the insertion and removal of the pin in a conjugate plug. Furthermore, this configuration reduces the risk of snagging or misalignment, while optimizing mechanical stability without altering the external dimensions of the connector pin. This also ensures improved compatibility with existing connectors and conjugate plugs.

[0058] The object of the present invention is also achieved with a connector element. The connector element comprises a housing and a connector pin according to the first aspect of the invention or the second aspect of the invention, in which: the housing comprises a base, the base is provided with an opening, the connector pin is inserted into the opening of the base of the housing, in particular inserted in a direction opposite to the direction of insertion of the pin with a conjugate connector or plug, so that the electrically insulating element of the connector pin extends to the base of the housing.

[0059] The fact that the connector pin is inserted into the opening in the base of the housing, and that the electrically insulating element extends to the base of the housing, ensures continuity of insulation between the pin and the housing. This configuration reduces the risk of accidental contact with a conductive part of the connector pin.

[0060] One or more features of the connector pin according to the first aspect, or respectively according to the second aspect, can be integrated or combined with the connector pin according to the second aspect, or respectively according to the first aspect.

[0061] The drawings accompanying the invention are incorporated into the description and form an integral part thereof to illustrate one embodiment of the present invention. These drawings, together with their description, serve to explain the principles of the invention. The drawings are intended solely to illustrate preferred and alternative examples of how the invention can be implemented and used, and shall not be construed as limiting the invention to the single embodiment illustrated and described.

[0062] The examples and variants described below can therefore be considered alone or in an arbitrary combination.

[0063] Other features and advantages will become apparent from the more detailed description that follows of the various embodiments of the invention, as illustrated in the accompanying drawings, in which similar references refer to similar elements, and where: [Fig.1] represents a connector pin according to an embodiment of the present invention. [Fig.2] shows an exploded view of the connector pin shown in [Fig.1]. [Fig.3] shows an enlargement of the front edge of the elongated flat body of [Fig.2]. [Fig. 4] shows an enlargement of a lateral edge of the elongated flat body of [Fig. 2]. [Fig. 5] represents a cross-sectional view of the connector pin shown by [Fig. 1] at the front edge. [Fig.6] represents a cross-section of the first and second protrusions of the connector pin of [Fig.1]. [Fig.7] represents a cross-section of the third protrusions of the connector pin of [Fig.1]. [Fig.8] represents a connector element comprising a connector pin as illustrated by [Fig.1].

[0064] Figure 1 represents a connector pin 10 according to one embodiment. The connector pin 10 extends in directions schematically represented by axes X, Y and Z which together define a Cartesian coordinate system (X, Y, Z).

[0065] The connector pin 10 comprises an elongated flat body 12. The elongated flat body 12 is elongated along an insertion direction 1, parallel to the Z-axis. The connector pin 10 is configured to be connected to a matching plug (not shown) in the insertion direction 1. The elongated body 12 is electrically conductive. The elongated flat body 12 is metallic. In particular, the elongated flat body 12 is made of a copper alloy.

[0066] The connector pin 10 further includes an electrically insulating element 14. The electrically insulating element 14 partially covers the elongated flat body 12, in particular to meet IPXXB and / or IPXXB+ standards, which provide that the elongated flat body 12 is protected against contact with a human finger. The electrically insulating element 14 may be made of an electrically insulating material, in particular polyamide 66 (PA66) or polybutylene terephthalate (PBT).

[0067] The structure of the elongated flat body 12 and the electrically conductive element 14 will be further described with reference to [Fig.2] which shows an exploded view of the connector pin 10, [Fig.3] which shows an enlargement of the front edge of the elongated flat body 12, [Fig.4] which shows an enlargement of a lateral edge of the elongated body 12, and Figures 5, 6 and 7 which show cross-sections of the connector pin in a cutting plane which is perpendicular to the insertion direction 1.

[0068] With reference to [Fig.2], the elongated flat body 12 comprises two contact surfaces 16, 18 respectively planar and opposed to each other by a thickness 3 along the X axis. Only the contact surface 16 is visible in the figures due to the orientation of the connector pin 10 in the drawings.

[0069] Along the insertion direction 1, each of the contact surfaces 16, 18 successively comprises a first portion 20, a second portion 22, and a third portion 24. The first portion 20 is adapted to be connected to a body of connector or fitted into a base (see [Fig.8]). The third portion 24 extends to a free end of the elongated flat body 12. Each portion 20, 22, 24 has the same thickness, namely thickness 3, defined along the X axis.

[0070] Each portion 20, 22, 24 has a defined length along the insertion direction 1, in other words along the Z axis. The first portion 20 has a length equal to or greater than that of the third portion 24, in particular between 1 and 1.5 times the length of the third portion 24. The second portion 22 has a length less than each of the lengths of the first portion 20 and the third portion 24, in particular between 3 and 8 times smaller, more in particular between 4 and 5 times smaller.

[0071] As annotated in [Fig. 2], a cross-section 26 of the first portion 20 in a cutting plane (XY) has a larger area than a cross-section 30 of the third portion 24 in a parallel cutting plane (XY). A cross-section 28 of the second portion 22 in a cutting plane (XY) has a smaller area than either cross-section 26 or cross-section 30.

[0072] The difference in surface area between the cross-sections 26, 28, 30 is due to the geometry of the different portions 20, 22, and 24. The second portion 22 is formed by a narrowing of the first portion 20, and the third portion 24 is wider than the second portion 22, but not as wide as the first portion 20. Due to these differences in dimensions, a first shoulder 32 (see in a plane (XY)) is formed between the first portion 20 and the second portion 22, and a second shoulder 34 (see in a plane (XY)) is formed between the second portion 22 and the third portion 24. The first shoulder 32 and the second shoulder 34 are separated by the length of the second portion 22. This results in a rectangular notch 38 in a plane (YZ).

[0073] In the embodiment shown, the connector pin 10 is symmetrical, in particular mirror-image with respect to a plane (XZ). The elongated flat body 12 thus comprises two notches 38 arranged symmetrically with respect to each other. The present description of one notch 38 therefore applies to the other. In another embodiment not shown, the connector pin could have a single notch or at least three notches. The notches could be arranged at different heights relative to each other along the insertion direction 1.

[0074] At the level of the first portion 22, the two contact surfaces 16, 18 are connected to each other by lateral walls 40, 42. At the level of the second portion 24, the two contact surfaces 16, 18 are respectively connected to each other by the bearing surfaces 36. At the level of the third portion 26, the two contact surfaces 16, 18 are connected to each other by lateral edges 44, 46.

[0075] The lateral edges 44, 46 of the third portion 26 are connected by a front edge 48. The front edge 48 comprises a flat base 50 perpendicular to the insertion direction 1. In other words, the front edge 48 extends in a plane (XY). The angle between the front edge 48 and each of the lateral edges 44, 46 is between 80° and 100°, in particular the angle is 90°.

[0076] As illustrated by [Fig.2] and the cross-sectional views of Figures 5 and 6, a first protrusion 52 and a second protrusion 54 extend from the base 50 of the front edge 48. In the plane of the flat base 50, the first protrusion 52 is distinct from the second protrusion 54.

[0077] In the embodiment shown, the first protrusion 52 and the second protrusion 54 are symmetrical, in particular with respect to a mirror plane (plane (XZ)).

[0078] The first protrusion 52 and the second protrusion 54 each have a trapezoidal shape in a cutting plane (XY) parallel to the planar base 50 of the front edge 52. Such a cutting plane is illustrated by figures 5 and 6.

[0079] The first protrusion 52 and the second protrusion 54 are respectively arranged on the flat base 50 equidistant from the contact surfaces 16, 18. The first protrusion 52 is arranged with the same distance from the lateral edge 46 as the second protrusion 54 is from the lateral edge 44.

[0080] The first protrusion 52 and the second protrusion 54 are in particular shaped like isosceles trapezoids. Each isosceles trapezoid defines a shorter side 56 parallel to a longer side 58 in said cutting plane. The protrusions 52, 54 are arranged so that each side 56, 58 extends parallel to the thickness 3 of the elongated flat body 12. Each longer side 58 is smaller than the thickness 3 of the elongated flat body 12. Logically, each shorter side 56 is also smaller than the thickness 3 of the elongated flat body 12.

[0081] The first protrusion 52 and the second protrusion 54 are arranged so that, in the said plane of section (see [Fig. 6]), each of the short sides 56 are parallel to each other and face each other. The long side 58 of the first protrusion 52 is oriented towards the lateral edge 46. The long side 58 of the second protrusion 54 is oriented towards the lateral edge 44.

[0082] In the embodiment shown, see in particular [Fig. 2], the first protrusion 52 and the second protrusion 54 extend from the flat base 50 of the front edge 52 in a single block 62 to a free end 60 common to both protrusions 52 and 54. In particular, the end 60 is formed by a flat surface (60) that extends parallel to the flat base 50 (see [Fig. 2] and [Fig. 3]). The block 62 forms a main protrusion 62. The block 62, in other words the main protrusion 62, is provided with an opening 64. In particular, the opening 64 is a through opening 64. The through opening 64 extends in a direction perpendicular to The insertion direction 1 is such that it passes through block 62, i.e., the main protrusion 62, on both sides. Block 62, i.e., the main protrusion 62, is formed continuously by a connecting portion 66 that partially links the first protrusion 52 and the second portion 54. This connecting portion 66 links the respective shorter sides 56 of the trapezoidal shapes of the protrusions 52 and 54. This connecting portion 66, like a bridge, defines the through opening 64. The through opening 64 is formed between the flat base 50 of the front edge 48 and the connecting portion 66.

[0083] For each of the first protrusion 52 and the second protrusion 54, lateral walls 68, 70 connect the small side 56 to the large side 58 of the trapezoidal shapes (see [Fig.6]). These walls 68, 70 can be inclined between the base 50 and the free end 60. In particular, the lateral walls 68 and 70 can be inclined convergently, that is, they approach each other from the base 50 towards the free end 60. In another variant, the walls 68, 70 can be convergent in the opposite direction, that is, they approach each other from the free end 60 towards the base 50. In yet another variant, the lateral walls 68, 70 can extend perpendicularly to the base 50.

[0084] The first protrusion 52 and the second protrusion 54 thus form a main protrusion 62 (defined by the block 62) which is recessed relative to the contact surfaces 16, 18. The main protrusion 62 is thinner than the elongated flat body 12 of thickness 3, thus forming a narrowing along the insertion direction 1 relative to the flat base 50 of the front edge 52. This makes it possible to provide bearing surfaces, in particular the flat base 50, the free end 60, the side walls 68, 70 and the interior of the opening 64, for the electrically insulating element 14.

[0085] In the embodiment shown, the connector pin 10 is provided with a third protrusion 72. The third protrusion 72 extends from each lateral edge 44, 46.

[0086] Since the connector pin 10 is symmetrical in the embodiment shown, the following description of the third protrusion 72 extending from the lateral edge 44 applies to the third protrusion 72 extending from the lateral edge 46.

[0087] As illustrated in [Fig. 7], the lateral edge 44 forms a flat base, particularly in the (XZ) plane, from which the third protrusion 72 extends in a direction perpendicular to the insertion direction 1, i.e., parallel to the Y axis. In a sectional view (XY) perpendicular to the insertion direction 1, and as shown in [Fig. 7], the third protrusion 72 has a trapezoidal cross-section. In particular, the third protrusion 72 has a cross-section in the shape of an isosceles trapezoid. The isosceles trapezoid defines a shorter side 74 parallel to a longer side 76 in the sectional plane (XY) illustrated in [Fig. 7]. The shorter side 74 It is flush with the lateral edge 44 (which is why it is schematically represented by a dashed line in [Fig. 7]). In other words, the third protrusion 72 extends from the lateral edge 44 along its shorter side 74 towards its longer side 76. The longer side 76 thus forms the free end (76) of the third protrusion 72. The third protrusion 72 extends from the lateral edge 44 towards its free end 76, gradually widening. The third protrusion 72 takes the form of a dovetail.

[0088] The length of the long side 76 is less than the thickness 3 of the elongated flat body 12. As illustrated in the cross-section of [Fig.7], the third protrusion 72 is positioned relative to the lateral edge 44 so as to be equidistant from the contact surfaces 16 and 18. This configuration allows bearing surfaces to be maintained on the lateral edge 44 for the electrically insulating element 14.

[0089] As illustrated by [Fig.4], at the level of the second portion 22, the third protrusion 72 joins the first shoulder 32 to the second shoulder 34 so as to form the notch 38. The third protrusion 72 thus has a bridge-shaped connecting structure 78 at the level of the second portion 22.

[0090] At the level of the second portion 22, as at the level of the third portion 24, the third protrusion 72 is positioned relative to the lateral edge 44 so as to be equidistant from the contact surfaces 16 and 18. Furthermore, at the level of the second portion 22, the third portion 24 projects from the bearing surface 36 so as to leave a portion of the bearing surface 36 on either side of the third protrusion 72. A portion of the first shoulder 32 and a portion of the second shoulder 34 are also left free so as to provide support for the electrically insulating element 14.

[0091] This arrangement makes it possible to improve the mechanical stability and structural integrity of the electrically insulating element 14.

[0092] As shown in [Fig.3], the third protrusion 72 of the lateral edge 44 is integrally connected to the second protrusion 54, in particular by a beveled corner 80. The third protrusion 72 of the lateral edge 46 is integrally connected to the first protrusion 52, in particular by a beveled corner 82. In the embodiment shown, the first protrusion 52, the second protrusion 54 and the third protrusion 72 of each lateral edge 44, 46 thus form a protrusion of a continuous block, which improves the mechanical stability of the elongated flat body 12, and therefore, of the connector pin 10.

[0093] The electrically insulating element 14 is overmolded onto the elongated flat body 12. The electrically insulating element 14 completely covers the flat base 50 of the front edge, the first protrusion 52, and the second protrusion 54. The electrically insulating element 14 completely covers the lateral edges 44 and 46 of the third portion 24 and the third protrusion 72 at the level of the third portion 24. The electrically insulating element 14 completely covers the bearing surfaces 36 of the second portion 22 and the third protrusion 72 on each side at the level of the second portion 24, including the connecting structure 78. None of the first, second and third protrusions 52, 54, 72 are visible when the electrically insulating element 14 is overmolded to the elongated flat body 12, as illustrated by the connector pin 10 of [Fig. 1].

[0094] The electrically insulating element 14 does not cover the contact surfaces 16, 18. The electrically insulating element 14 does not cover, even partially, the first portion 20.

[0095] The electrically insulating element 14 has an approximately "U" shape. A front portion 100 has an outer wall 102 inclined convergently towards the insertion direction 1. This facilitates the insertion of the connector pin 10 into a matching plug (not shown).

[0096] Lateral edges 104, 106 of the electrically insulating element 14 are respectively connected to the front portion 100 by beveled corners 108, 110. The beveled corners 108, 110 also facilitate insertion into a conjugate plug.

[0097] In a plane (YZ), in particular in the plane of each contact surface 16, 18, the lateral edges 104, 106 of the electrically insulating element 14 are respectively flush with the contact surfaces 16, 18. [Fig. 1] illustrates that one surface of each lateral edge 104, 106 is in the same plane as the contact surface 16. Although the other side of the pin 10 is not visible in [Fig. 1], another surface of each lateral edge 104, 106 is in the same plane as the contact surface 18.

[0098] In a plane (XZ), particularly in the plane of each side wall 40, 42, the side edges 104, 106 of the electrically insulating element 14 are flush with the side walls 40, 42 of the first portion 20. [Fig. 1] illustrates that a surface of the side edge 104 is in the same plane as the side wall 40. Although the other side of the pin 10 is not visible in [Fig. 1], a surface of the side edge 106 is in the same plane as the side wall 42.

[0099] Thus, a cross-section of the connector pin 10 at the level of the second portion 22 and the third portion 24 is rectangular (see [Fig.7] for example) and retains the same dimensions as the cross-section of the first portion 20. In other words, the overmolding of the electrically insulating element 14 on the portions 22, 24 does not modify the dimensions of the connector pin 10 with respect to the first portion 20. The connector pin 10 has essentially a rectangular block shape.

[0100] The electrically insulating element 14 is held in the insertion direction 1, and in a direction perpendicular to the insertion direction 1, by virtue of its adhesion to the bearing surfaces, in particular formed by the flat base 50, the free end 60, the lateral edges 42 and 44, the first shoulder 32, the second shoulder 34 and the bearing surfaces 36. In addition, the electrically insulating element 14 is stabilized by the electrically insulating material which fills the opening 64 and the notches 38.

[0101] Figure 8 partially illustrates a connector element 200. The connector element 200 comprises a housing 202. The housing 202 of Figure 8 comprises two connector pin receptacles 204. The number of receptacles 204 is not limited. Each receptacle 204 comprises a base 206. The base 206 is surrounded by a protective collar 208 that extends perpendicularly from the base 206 in the insertion direction 1. In particular, the base 206 is surrounded by a protective collar 208 in the shape of the letter "U". The base 206 includes an opening 210 adapted to receive a connector pin 10. In [Fig.8], a connector pin 10 is inserted into the opening 210 of the base 206 of the housing 202. The connector pin 10 is inserted so that the electrically insulating element 14 of the connector pin 10 extends to the base 206 of the housing 202.In other words, the first portion 20 of the flat, elongated body 12 is inserted inside the opening 210, and is thus not visible in [Fig. 8]. While the second portion 22 and the third portion 24 protrude out of the opening 210. Thus, the electrically insulating element 14 is advantageously arranged on the portions 22, 24 of the connector pin 10 which are likely to come into contact with a finger.

[0102] List of reference signs 1: Integration management 3: thickness 10: Connector pin 12: elongated flat body 14: electrically insulating element 16: Contact surface 18: Contact surface 20: First portion 22: Second portion 24: Third portion 26: Cross-section of the first portion 28: Cross-section of the second portion 30: Cross-section of the third portion 32: First shoulder 34: Second shoulder 36: bearing surface of the second portion 38: notch 40: side wall of the first portion 42: side wall of the first portion 44: lateral edge of the third portion 46: lateral edge of the third portion 48: Front edge 50: base plane 52: First protrusion 54: Second protrusion 56: shorter side of the isosceles trapezoid 58: longer side of the isosceles trapezoid 60: free end 62: main protrusion, block 64: opening 66: connecting section 68: side wall 70: side wall 72: third protrusion 74: shorter side of the isosceles trapezoid 76: longer side of the isosceles trapezoid 78: link structure 80: beveled corner 82: beveled corner 100: Front portion of the electrically insulating element 102: exterior wall 104: lateral edge 106: lateral edge 108: beveled corner 110: beveled corner 200: connector element 202: case 204: receptacle 206: base 208: protective collar 210: opening

Claims

Demands

1. A connector pin (10) comprising an elongated flat body (12) along an insertion direction (1) of the connector pin, the elongated flat body (12) being electrically conductive, the elongated flat body (12) comprising two contact surfaces (16, 18) opposite each other, the contact surfaces (16, 18) being respectively connected to each other along the insertion direction by lateral edges (36, 40, 42, 44, 46), a front edge of the elongated flat body (12) connecting the lateral edges (36, 40, 42, 44, 46), the front edge (48) comprising a flat base (50) perpendicular to the insertion direction (1), a main protrusion (62) extending from the flat base (50) of the front edge (48) along an insertion direction (1), and the the main protrusion (62) includes at least one through opening (64), the connector pin (10) further includes an electrically insulating element (14),The electrically insulating element (14) covers the front edge (48) and the main protrusion (62) so as to fill the through opening (64), and the electrically insulating element (14) at least partially covers the lateral edges (36, 40, 42).

2. The connector pin (10) according to claim 1, the main protrusion (62) having walls (68, 70) extending from the flat base (50) of the front edge (48) in an inclined manner along the insertion direction (1).

3. The connector pin (10) according to claim 1 or 2, the electrically insulating element (14) of which is formed in one piece.

4. The connector pin (10) according to any one of the preceding claims, the electrically insulating element (14) of which is overmolded onto the elongated flat body (12).

5. The connector pin (10) according to any one of the preceding claims, wherein a maximum thickness of the main protrusion (62) is strictly less than a maximum thickness between the two contact surfaces (16, 18), the thicknesses being respectively defined along a direction perpendicular to the insertion direction (1).

6. The connector pin (10) according to any one of the preceding claims, the electrically insulating element (14) of which is flush with each of the surfaces (16, 18, 40, 42) of the elongated flat body (12), in particular with each of the contact surfaces (16, 18).

7. The connector pin (10) according to any one of the preceding claims, wherein the main protrusion (62) has at least one trapezoidal section in a cutting plane parallel to the flat base (50) of the front edge (48), in particular at least one isosceles trapezoidal section in a cutting plane parallel to the flat base (50) of the front edge (48).

8. The connector pin (10) according to any one of the preceding claims, wherein the main protrusion (62) is formed by a first protrusion (52) and a second protrusion (54) which are partially connected to each other by a link portion (66) so as to define the through opening (64).

9. The connector pin (10) according to claim 8, wherein the first protrusion (52), or the second protrusion (54), or each of the two said protrusions (52, 54), has a trapezoidal shape in a cutting plane parallel to the flat base (50) of the front edge (48).

10. The connector pin (10) according to claim 9, the trapezoidal shape of each of the protrusions (52, 54) being defined by an isosceles trapezoid in said cutting plane parallel to the flat base (50) of the front edge (48), the isosceles trapezoid defining a short side (56) parallel to a long side (58) in said cutting plane, and the first protrusion (52) and the second protrusion (54) are arranged so that, in said cutting plane, each of the short sides (56) are parallel to each other and face each other.

11. The connector pin (10) according to any one of the preceding claims, comprising at least one third protrusion (72) extending at least partially from one of the lateral edges (36, 40, 42), the third protrusion (72) comprising a through opening (38), and the electrically insulating element (14) covering at less partially the third protrusion (72) so as to fill the through opening (38).

12. The connector pin (10) according to claim 11, of which at least one third protrusion (72) has a trapezoidal shape in a cutting plane perpendicular to the insertion direction (1).

13. The connector pin (10) according to at least claims 8 and 11, the first protrusion (52) and the second protrusion (54) of which are respectively fully connected to at least a third protrusion (72), in particular by a beveled corner.

14. The connector pin (10) according to any one of the preceding claims, the through opening of which (38, 64) delimits a rectangular cross section in a plane parallel to the contact surfaces (16, 18).

15. A connector element (200) comprising a housing (202) and a connector pin (10) according to any one of the preceding claims, wherein: the housing (202) comprises a base (206), the base (206) is provided with an opening (210), the connector pin (10) is inserted into the opening (210) of the base (206) of the housing (202) such that the electrically insulating element (14) of the connector pin (10) extends to the base (206) of the housing (202).

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