Electrical contact, in particular flat contact or bifurcated contact

Abstract

An electric contact has a first conductive element (110), an electric connection element (40) for contacting the first element (110), and a holding element (50) for holding the connection element (40) on the first element (110), in which a recess (20) is provided. At least one holding element (50) is provided which has a greater height than the height of the holding groove (22, 23) in the recess (20). According to the invention, the at least one holding element (50) is positioned at or within a specified distance in front of the frontmost positioning section (42) of the connection element (40) in one of the holding grooves (22, 23), and if the recess is a T-shaped cutout, at least one holding element (50) is analogously positioned behind the rearmost positioning section (43) of the connection element (40) in the counter insertion direction (56).

Description

TECHNICAL AREA

[0001] The present invention relates to an electrical contact, in particular a flat contact or a fork contact, comprising a first conductive element, at least one electrical connecting element for contacting the first conductive element and configured for contacting a feedable second conductive element, and at least one retaining element for holding the electrical connecting element(s) on the first conductive element, wherein the first conductive element has at least one T-shaped cut in the surface adjoining the feedable second conductive element, and wherein the electrical connecting element(s) have a first contact section for contact with the first conductive element in the T-shaped cut and a second contact section for contact with the feedable second conductive element outside the T-shaped cut. STATE OF THE ART

[0002] US 2017 / 093069 A1 relates to an electrical contact with a plurality of electrical connecting elements for contacting both a first conductive element and a second conductive element, and with a retaining element for holding the electrical connecting elements. Each of the electrical connecting elements has a first contact section for contact with the first conductive element, a second contact section for contact with the second conductive element, and a retaining section that is held between the first contact section and the second contact section and by the retaining element. For this purpose, small-diameter holes are formed on the first conductive element in the bottom of a groove such that they extend from the outer upper and lower surfaces to a receiving groove in the bottom of the groove.The small-diameter holes are located near the two side faces of the first conductive element, close to the ends of the projecting flange sections of the groove. These small-diameter holes contain engagement pins that are inserted from the outer upper and lower surfaces.

[0003] CN 10 665 46 08 A describes a flexible electrical connector. The flexible electrical connector comprises a base and a receiving clamp, the base and the receiving clamp being hinged to each other. The receiving clamp receives an electrical contact element, which has round free ends arranged in a hollow cylindrical recess and closed on both sides by two flanged cylindrical plugs, the plug being pressed into the receiving clamp as a retaining element.

[0004] CN 20 825 69 68 U describes an elastic electrical connector, including a base on which laterally opposing half-shells project upwards, into which the round webs of a connecting element can be inserted and wherein these are covered on all free ends of the half-shells by end flanges as a retaining element. PRESENTATION OF THE INVENTION

[0005] Based on this prior art, the invention aims to provide an electrical connector in which the retaining element holds the electrical connecting element(s) better and the connecting elements do not fall out.

[0006] Furthermore, the present invention makes it possible to ensure that the play for the electrical connecting elements is adjustable.

[0007] An electrical contact comprises a first conductive element, an electrical connecting element, usually configured as a group of interconnected lamellae, for contacting the first conductive element and configured for contacting a feedable second conductive element, and at least one retaining element for holding the electrical connecting element on the first conductive element, wherein the first conductive element has at least one notch in the surface adjoining the feedable second conductive element, and wherein the electrical connecting element has at least one foremost and one rearmost positioning section, identical in the case of a single lamella / contact section, for positioning in an associated retaining groove of the notch of the first conductive element, and a contact section for contact with the feedable second conductive element outside the notch.One to four retaining elements are provided, whereby one is sufficient for a blind hole design and two are sufficient for a continuous groove design, each having a greater height than the height of the retaining groove(s) of the cut to which they are assigned, wherein at least one retaining element is positioned on or at a predetermined distance in front of the foremost positioning section of the electrical connecting element in one of the retaining grooves, and either that at least one retaining element is positioned on or up to a predetermined distance behind the rearmost positioning section of the electrical connecting element in one of the retaining grooves, or that one of the retaining grooves is a blind hole groove with a back wall and that the rearmost positioning section of the electrical connecting element is positioned in this blind hole groove at a predetermined distance in front of the back wall of the blind hole groove.

[0008] The positioning described here, at a predetermined distance in front of or behind the foremost or rearmost positioning section, refers to the insertion or counter-insertion direction of the electrical connector into a continuous retaining groove. The insertion of the retaining element into the retaining groove can then be performed in the direct insertion or counter-insertion direction, meaning that a tool presses the retaining element directly into the recess and advances it to the intended position.

[0009] The positioning of the electrical connector in the insertion or counter-insertion direction can alternatively be achieved by pressing the retaining element into the retaining groove from the side of the insertion or counter-insertion direction, transversely in front of the contact section. "Transversely" here means that the retaining element is first advanced in the insertion direction (or against it), for example, in the center of the T-groove, over its base, and only at the predetermined depth (viewed in the direction of the groove) is it pressed transversely into the groove to the left or right of the contact section. "Transversely" does not necessarily mean at a 90-degree angle to the groove, but can also mean pressing in a forward direction, i.e., at an angle of, for example, between 30 and 60 degrees, and particularly 45 degrees.

[0010] In designs with an L-shaped groove, i.e., a retaining groove on only one side, a further insertion direction can also be provided, namely the lateral insertion of the positioning section(s) into the retaining groove and the pressing of the other opposing lateral elements of the electrical connecting element into the groove on its side wall.

[0011] The retaining elements can be, in particular, spheres or cylindrical sections. In the case of cylindrical sections, one cylinder end can be positioned opposite the contact section, while the other cylinder end can be broken off at the edge of the contact body, allowing the body to fill the groove to the edge. Alternatively, it can be shaped like a cube or a cuboid. Its essential characteristics are its oversize beyond the groove and its greater hardness compared to the material of the first conductive element.

[0012] The electrical contact is, in particular, a flat contact with a notch and a one-sided or two-sided undercut, or a fork contact with two opposing notches inside the fork, each with such one-sided or two-sided undercuts. The notches can be described as L-shaped in the case of a one-sided undercut and as T-shaped in the case of a two-sided undercut, because the L-shape or T-shape refers only to the basic appearance of the notch with undercut and not to the shape of the retaining groove itself.

[0013] The retaining grooves of the T-shaped cut do not have to be rectangular; they can also be round or triangular in cross-section or correspond to a polygon, provided that the retaining element pressed into these grooves has an excess that prevents the retaining element from being pushed out or falling out due to its use as such or pressure from the contact section.

[0014] Advantageously, two retaining elements per T-shaped groove are sufficient, whereby these two retaining elements can be positioned in the same retaining groove in a T-shaped groove in the insertion direction and counter-insertion direction.

[0015] Alternatively, these two retaining elements can also be positioned in one retaining groove in the insertion direction and in the other retaining groove in the counter-insertion direction.

[0016] In an L-shaped insertion, two retaining elements are positioned in this single retaining groove, one in the insertion direction and one in the counter-insertion direction.

[0017] The single undercut (in the case of an L-shaped cut) or one or both of the two undercuts (in the case of a T-shaped cut) do not need to have continuous retaining grooves. The retaining grooves can be blind grooves, meaning they end in the solid material of the first conductive element. In this case, this end of the groove replaces one of the retaining elements. Only one retaining element is then required, which is inserted on the opposite side (in the insertion direction) of the contact section. Again, as mentioned above, this retaining element can be inserted diametrically opposite the end wall of the retaining groove in the case of a T-shaped cut.

[0018] A method for producing such an electrical contact is characterized by the process steps of feeding the first contact section(s) of the electrical connecting element(s) for contact with the first conductive element into the T-shaped cut at a predetermined distance from the side edges of the electrical contact, providing two, three or four retaining members with a greater height than the height of the retaining groove of the T-shaped cut, positioning at least one retaining member at or at a predetermined distance in front of the first contact section in the insertion direction of the electrical connecting element(s) in one of the retaining grooves, and positioning at least one retaining member at or up to a predetermined distance in front of the first contact section in the opposite insertion direction of the electrical connecting element(s) in one of the retaining grooves.

[0019] Further embodiments are specified in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Preferred embodiments of the invention are described below with reference to the drawings, which serve only for illustration and are not to be interpreted restrictively. The drawings show: Fig. 1 shows a perspective view of a flat contact as a first conductive element with an inserted electrical connecting element and retaining elements in a T-slot; Fig. 2 shows a perspective exploded view of the flat contact. Fig. 1 with electrical connecting element and retaining members shown to the side; Fig. 3 shows a cross-sectional view along line III-III of the Fig. 1 Fig. 4 shows a cross-sectional view along line IV-IV of the Fig. 1Fig. 5 shows a perspective view of a fork contact as a first conductive element with an inserted electrical connecting element and retaining elements in a T-slot; Fig. 6 shows a perspective exploded view of the flat contact of the Fig. 5 with electrical connecting element and retaining elements shown to the side; Fig. 7 shows a cross-sectional view along line VII-VII of the Fig. 5 Fig. 8 shows a cross-sectional view along line VIII-VIII of the Fig. 5 Fig. 9 shows a side view of the Fig. 5 with an additional inserted second conductive element; Fig. 10 shows a side view of the Fig. 1 with an additional inserted second conductive element; Fig. 11 shows a view enlarged compared to the other figures of the embodiment described in the Fig. 1 , Fig. 5 and Fig. 15inserted electrical connecting element; Fig. 12 shows a perspective view of a flat contact as a first conductive element with an inserted electrical connecting element in an L-groove; Fig. 13 shows a perspective exploded view of the flat contact of the Fig. 12 with electrical connecting element and retaining elements shown to the side and various mounting directions; Fig. 14 shows a cross-sectional view along line XIV-XIV of the Fig. 12 Fig. 15 shows a perspective view of a flat contact as a first conductive element with an inserted electrical connecting element and a retaining element in a non-continuous T-groove; and Fig. 16 shows a perspective exploded view of the flat contact of the Fig. 15 with electrical connecting element and retaining member shown to the side. DESCRIPTION OF PREFERRED EXECUTION FORMS

[0021] Fig. 1Figure 1 shows a flat contact 10, which is a first conductive element. In cross-section, this element has a cuboid shape with a bottom surface 11 and a top surface 12, which are aligned parallel to each other. Fig. 2 This shows, for illustrative purposes, a perspective exploded view of the flat contact 10 of the Fig. 1 with electrical connecting element 40 shown to the side and retaining elements 50. The following are used for explanation: Fig. 3 with a cross-sectional view along line III-III of the Fig. 1 and the Fig. 4 with a cross-sectional view along line IV-IV of the Fig. 1 .

[0022] A retaining groove 20, shaped as a T-shaped notch, is provided in the upper surface 12 of the flat contact 10. The retaining groove 20 extends laterally, i.e., in the width direction of the fork contact. Here, we should briefly refer to the Fig. 10The figure shows a second electrical element 60, which is advanced for contact in an insertion direction 65 and, at least in its end position, covers the retaining groove 20 and thus the electrical connecting element 40. The retaining groove 20 has a flat bottom 21 and, as the name T-groove suggests, has lateral retaining grooves 22 and 23, which in cross-section in the insertion direction 65 are designed as rectangular recesses.

[0023] The rectangular recesses serve to accommodate side webs 42, 43 of the electrical connecting element 40. An electrical connecting element 40 is located in the Fig. 11As shown, this electrical connecting element 40 comprises five lamellae 41; any other number from 1 to X can also be provided, the number depending on the length of the retaining groove 20 (and the retaining elements 50, which will be explained later). X will rarely exceed twenty, although there is no upper limit.

[0024] In other words, the retaining grooves 22 and 23 have flange sections extending beyond the base 21 transversely to the insertion direction 65, also referred to here as: in an insertion direction 55, which is located on the opening side in the Fig. 1 left and at the back in the Fig. 1 are formed to the right of the receiving groove or retaining groove 20.

[0025] In the first embodiment, the flange sections define the side webs of each of the electrical connecting elements 40 inserted in an insertion direction 55, so that the electrical connecting elements 40 cannot fall out of the retaining grooves 22 and 23. The side webs have the general reference numeral 46, while the foremost side web bears the reference numeral 42 and the rearmost side web the reference numeral 43. These side webs can also be referred to as teeth, with each pair of these teeth supporting a lamella 41 of the connecting element 40 on the left and right.

[0026] This leads to the problem known from the prior art that it is necessary to prevent the electrical connecting elements from falling out of the retaining groove 20, whereby movement in their insertion direction can alternatively be possible as play or completely prevented. This is prevented here by pressing retaining elements 50 into the groove or rectangular recess 23 on the right, both in the insertion direction 55 and in a counter-insertion direction 56.

[0027] After positioning the electrical connecting element 40 as shown in Fig. 1In the insertion direction 55, a first retaining element 50 is advanced into the groove 23 until it abuts the foremost side web 42 of the first electrical connecting element 40 in the insertion direction. Simultaneously or subsequently, a second retaining element 50 is advanced in the opposite direction, i.e., in the opposite insertion direction 56, into the groove 23, also until it reaches the rearmost side web 43 of the electrical connecting element 40. The group of lamellae 41 of the electrical connecting element 40 is then fixed and can only move in a manner resulting from the greater inclination of the electrical connecting element 40 when the second electrical element 60 is inserted.

[0028] The retaining elements 50 of the present embodiment are solid metal spheres with a slightly larger diameter than the height of the groove 23. Instead of being inserted in the feed direction, they can also be pressed laterally from the base 21, here to the right, into the groove 23 directly in front of the web 42. They are held in place by frictional engagement. A key characteristic of the retaining elements 50 is their greater hardness than the material of the body of the flat contact 10.

[0029] Instead of advancing to the first / last web 42 / 43 of the electrical connecting element 40, the retaining members 50 can also maintain a predetermined distance from each other, which results from the known distance between the two webs 42 / 43 and an additional predetermined clearance.

[0030] In other embodiments, the two retaining elements 50 can alternatively both be pressed into the right-hand groove 22, or they can hold the electrical connecting elements 40 by pressing them diagonally, with one metal ball 50 at the front right in groove 23 and one metal ball 50 at the rear left in groove 22, or vice versa. In any case, the use of two retaining elements 50 is sufficient.

[0031] Instead of metal balls, other forms of retaining elements 50 are also possible, with which a force-fit connection can be achieved by oversizing them relative to the receiving grooves 22 / 23, such as rods, in particular cylindrical rods, which are inserted into the grooves 22 / 23. It is essential that these elements are completely embedded in the guide grooves 22 / 23 of the flat contact 10 and do not protrude beyond the side wall. In principle, it would also be possible to insert a corresponding cylindrical pin and break it off at the front of the flat contact 10 so that it is completely within the respective groove 22 / 23 and does not protrude. This would then be a rod inserted longitudinally into one or both of the grooves 22 / 23 as a retaining element. This replaces a ball in a groove.

[0032] Alternatively, in the case of a T-groove, a correspondingly oversized crossbar (not shown in the figure) can be advanced in the two opposing grooves in the direction 55 or 56 on the groove base 21 until it reaches the predetermined position. This would, for example, allow for a T-groove with a crossbar that is larger than the receiving grooves 22 / 23. Fig. 2The positioning of the first 42 or last 43 web is overdetermined, since one ball 50 in front of and one ball 50 behind the connecting element 40 are sufficient as a retaining element. With a transversely inserted rod, the foremost 42 or rearmost 43 web is blocked in its two grooves 22 and 23. An advantage of the transverse rod is that the excess length can also affect the width of the groove, so that this transverse rod can not only be taller than the respective grooves 22 and 23, but also longer than the width of the entire groove. The transverse rod can also first be inserted into one groove and advanced at an angle of, for example, 45 degrees, so that upon reaching the end position in one groove, it can be pivoted around this point and then moved into the transverse position in the other groove.

[0033] Finally, the "pressing in" of the retaining elements 50 can not only be a direct longitudinal pressing into and through the groove 23 up to the in Fig. 1 The position shown does not necessarily mean a lateral insertion from the center of the T-groove 20, corresponding to arrow 59, which also defines an alternative "insertion direction" 59. Since the retaining elements 50 have an excess height over the groove 22 or 23, insertion directly in the direction of arrow 55 or in the opposite direction 56 is detectable by the deformation of the groove 22 or 23 and is a physical characteristic, as is positioning in the alternative insertion direction 59. Instead of the opposite insertion direction 56, there is then the alternative opposite insertion direction 58.

[0034] Fig. 5Figure 1 shows a fork contact 110, which is the first conductive element. In cross-section, this has the shape of a C with a bottom surface 111, a top surface 112, and an upper inner surface 114 and a lower inner surface 113, which are aligned parallel to each other. Fig. 6 This shows, for illustrative purposes, a perspective exploded view of the fork contact 110 of the Fig. 5 with electrical connecting element 40 shown to the side and retaining elements 50. The following are used for explanation: Fig. 7 with a cross-sectional view along line VII-VII of the Fig. 5 and the Fig. 8 with a cross-sectional view along line VIII-VIII of the Fig. 5 .

[0035] All features that have the same reference symbols in the Figs. 5 to 8 as in the Figs. 1 to 4 The items received are executed identically and, unless otherwise described here, refer to the above description of the Figs. 1 to 4In short, to put it simply: identical features have identical reference symbols.

[0036] In the upper inner surface 114 and in the lower inner surface 113 of the fork contact 110, a retaining groove 20 is provided, which is designed as a T-groove. The two retaining grooves 20 are located opposite each other in the upper inner surface 114 and in the lower inner surface 113.

[0037] The two retaining grooves 20 extend in the Fig. 5 laterally, i.e. in the width direction of the fork contact, whereas in the embodiment of the Figs. 15 and 16 extend in the longitudinal direction. The retaining grooves 22 each have a flat bottom 21 and, as the name T-groove suggests, each have lateral retaining grooves 22 and 23, which in cross-section in the insertion direction 65 are designed as rectangular recesses.

[0038] The rectangular recesses serve to receive side webs 46 of the electrical connecting elements 40. In other words, the retaining grooves 22 and 23 have flange sections extending beyond the base 21 transversely to the insertion direction 65, which are located on the opening side in the Fig. 5 left and at the back in the Fig. 5 are formed to the right of the receiving groove or retaining groove 20.

[0039] In the second embodiment, the flange sections limit the two side webs 42 of each of the two electrical connecting elements 40 inserted, so that the electrical connecting elements 40 cannot fall out of the retaining grooves 22 and 23. Or in other words, the electrical connecting elements 40 are secured from the side that is transverse to the direction 65. Fig. 9The side webs 46 are connected to a continuous central web 44 as a retaining band, so that the side webs can be viewed as comb-like teeth extending to the left of the central web. The lamellae of the electrical connecting element 40 are mechanically connected as in connection with Fig. 11 described as connected to the retaining strap. In other embodiments not shown here, the fastening of the lamellae 41 can be implemented differently; the essential feature is the existence of at least one-sided (see illustration, Fig. 12 ) Teeth or side ridges as positioning sections for the retaining grooves, left and right, left or right, or one-sided.

[0040] As in the first embodiment, the connecting elements 40 are fixed in their position in the respective T-groove 20 by pressing retaining elements 50 into the groove or rectangular recess 23 on the right at the top and bottom, thus preventing them from falling out. Therefore, the four retaining elements 50 are located here in the Fig. 6 to the right of the two upside-down connecting elements 40. They are all inserted in either the insertion direction 55 or the opposite insertion direction 56, with the alternative insertion direction 59 also being possible.

[0041] After positioning the electrical connecting elements 40 as shown in Fig. 5As shown, in the insertion direction 55, a first retaining element 50 is advanced into the (for example) lower groove 23 until it abuts the foremost side web 42 of the first electrical connecting element 40 in the insertion direction. Simultaneously or subsequently, a second retaining element 50 is advanced in the opposite direction 56 into the lower groove 23, also until it reaches the rearmost side web 43 of the electrical connecting element 40. Simultaneously or subsequently, the retaining elements 50 for the other connecting element 40 are pushed into the upper groove 23. The electrical connecting elements 40 are then fixed and can only move in a manner resulting from the greater inclination of the electrical connecting elements 40 when the second electrical element 60 is inserted, which is shown in Fig. 9 is shown.

[0042] Here too, instead of advancing the electrical connecting element 40 towards the first / last web 42 / 43, the retaining elements 50 can also be set at a predetermined distance from each other. This distance results from the known distance between the foremost and rearmost webs 42 and 43 as positioning sections and an additional predetermined clearance. This can be handled the same way for the upper and lower connecting element 40, i.e., no clearance or clearance for both.

[0043] In other embodiments, the two retaining elements 50 per connecting element 40 (top and bottom) can alternatively both be pressed into the right groove 22, or the electrical connecting elements 40 can be fixed by diagonally pressing them in, with one metal ball 50 at the front right in groove 23 and one metal ball 50 at the rear left in groove 22, or vice versa. In any case, the use of two retaining elements 50 per connecting element 40 is sufficient.

[0044] Instead of metal balls, other shapes of retaining elements 50 are also possible here, with which a force-fit connection can be achieved by oversizing them relative to the receiving grooves 22 / 23. In the area of ​​height and movement of the retaining elements 50 in this direction, there is a positive fit with interference; essential for the function is the force-fit connection in the insertion direction 55 or in the counter-insertion direction 56 made possible by this interference in the positive fit, which limits the movement of the connecting elements 40 to play or completely restricts it.

[0045] The Fig. 9 shows a side view of the Fig. 5 with an additional second conductive element 60 inserted and the Fig. 10 shows a side view of the Fig. 1with an additional second conductive element 60. The function of the front inclined edges 25, 125, and 126 of the flat contact 10 and the fork contact 110, respectively, becomes clear: they facilitate the insertion of the second conductive element 60, which then closes the contact, onto the top surface 12 or between the lower and upper inner surfaces 113 and 114. It also becomes apparent that the connecting elements 40 are bent transversely when, as the second conductive element 60 runs onto the leading edge 45 of the connecting elements 40, they are pivoted about the axis defined by the side webs 46 of the retaining band 44. In this process, no or hardly any additional forces are exerted on the retaining elements 50 by the side webs 42; rather, the side webs 42 at most tilt in the grooves 22 and 23. It is clear that in the design according to Fig. 10the contact element 60 can be brought towards the contact elements 41 from any direction, advantageously having an inclined edge 45 available as a ramp edge.

[0046] To illustrate a possible group of here five lamellae of a connecting element 40, the Fig. 11 a view of the figure, enlarged compared to the other figures, as described in the text. Fig. 1 , 5 and 15 inserted electrical connecting element 40. The lamellae 41 have an edge 45 inclined towards the insertion direction, wherein from the Fig. 6 It can be seen that the pivoting movement about the axis defined by the side webs 46 at the fork contact occurs in opposite directions. The lamellae 41 of the connecting elements 40 are preferably already inclined in one direction in the insertion direction, so that further pivoting is carried out when the second guiding element 60 is advanced.

[0047] The body of the flat contact 10 or the fork contact 110 is made of conductive metal. The retaining elements 50 can also be made of metal. They must have an excess of height over the corresponding groove 22, 23 at least at the positioning point and are plastically deformed when pressed in. This deformation is also detectable on the surfaces of the groove 22, 23 when they are pressed directly into the undercut.

[0048] The Fig. 12 Figure 3 shows another flat contact 310, which is a first conductive element. In cross-section, this has a cuboid shape with a bottom surface 11 and a top surface 12, which are aligned parallel to each other. Fig. 13 To illustrate, a perspective exploded view of the flat contact 310 is shown. Fig. 12 with electrical connecting element 40 and retaining elements 50 shown to the side. The following is also included for clarification: Fig. 14with a cross-sectional view along line XIV-XIV of the Fig. 12 .

[0049] The difference between the flat contact 10 of the Fig. 1 and the flat contact 310 of the Fig. 12 The reason lies in the fact that the retaining groove 320 is an L-shaped groove, i.e., a one-sided groove 22 with a side wall opposite the longitudinal direction of the groove 22. In other versions, there may of course be a graphically different side wall. Fig. 12 a groove arranged on the right and a side wall then arranged on the left, although when introducing the second guiding element 60 via the inclined ramp surface 25 the design shown in the drawing is preferred.

[0050] Here, the retaining band 44 of the connecting element 40 is provided with teeth or side ribs 46 on only one side, in a comb-like manner, with the foremost left side rib 42 and the rearmost side rib 43 being blocked by the retaining elements 50. Both retaining elements 50 must be inserted into the single groove.

[0051] In addition to the insertion directions 55 and 56, there is also the possibility of a further insertion direction, indicated by the reference numeral 57, comprising a lateral insertion of the side webs 46 into the groove 22 and a subsequent pressing from above of the connecting element 40 onto the bottom 21 of the retaining groove 320.

[0052] The Fig. 15Figure 1 shows another flat contact 410, which is a first conductive element. In cross-section, this element has a cuboid shape with a bottom surface 11 and a top surface 12, which are aligned parallel to each other. The retaining groove 420 is oriented longitudinally. Longitudinal direction here means that the insertion direction of the second conductive element 60, as shown in Figure 1, is parallel to the contact surface. Figs. 9 and 10 shown aligned in the longitudinal direction of the retaining groove 420. Fig. 16 This shows, for illustrative purposes, a perspective exploded view of the flat contact 410 of the Fig. 15 with electrical connecting element 40 and retaining elements 50 shown to the side.

[0053] The embodiment of the Figs. 15 and 16Figure 1 shows a blind hole groove with a left blind hole groove 222 and a right blind hole groove 223. These terminate in the solid material of the flat contact body at a groove back wall 222' and 223', respectively. This provides a stop for the rearmost pair of side webs 43, which replaces the retaining element. It is then sufficient, as shown in the exemplary embodiment, to position a retaining element 50 in front of one of the foremost side webs 42, either left or right. Here, the ball is shown as the retaining element 50 on the left.

[0054] It is also possible that the blind grooves 222 and 223 actually end at a rear wall 222' and 223', thus ending the T-groove, but that the retaining groove 420 with its flat base continues to the opposite side wall of the flat contact 410. The positioning is analogous to the illustration above. Fig. 16 .

[0055] It is clear that the invention is intended to cover all sixteen possible arrangements of the four following features. Transverse direction or longitudinal direction of the groove ( Figs. 1 , 5 , 12 opposite Fig. 15 ) Continuous groove or blind hole groove ( Fig. 1 , 5 , 12 opposite Fig. 15 ) T-incision versus L-incision ( Fig. 1 , 5 , 15 opposite Fig. 12 ) Flat contact or fork contact ( Fig. 1 , 12 and 15 opposite Fig. 5 ) wherein, in addition, the above-explained freedom of arrangement of the retaining elements 50 on the left and / or right exists in part, with and without play, as a ball, longitudinal rod or transverse rod, advantageously not extending beyond the outer side walls of the contacts and wherein a retaining element in the case of a blind hole provided on at least one side may also be formed by its back wall 222', 223'. REFERENCE MARK LIST 10 Flat contact; first conductive element, with T-shaped indentation Cylinder section 55 Direction of insertion 56 Counter-inlet direction 11 bottom 57 further insertion direction 12 Top 58 alternative counter-injection direction 20 T-incision 21 Floor 59 alternative insertion direction 22 rectangular recess; retaining groove 60 Conductor contact; second conductive element 23 rectangular recess; retaining groove 61 Front of the conductor contact 25 inclined ramp 62 Underside of the conductor contact 40 electrical connecting element 63 Top side of the conductor contact 65 Insertion direction 41 lamella 110 Fork contact; first conductive element, with T-indentation 42 frontmost side bar 43 rearmost side rib 44 central walkway 111 bottom 45 ramp edge 112 Top 46 Sidebar 113 lower inner surface 50 Retaining element / metal ball; 114 upper inner surface 125 lower inclined ramp surface 310 first conductive element, with L-shaped indentation 126 upper inclined ramp surface 210 Flat contact, first conductive element, with T-groove and blind hole slots 320 L-incision 323 side wall of the puncture 410 Flat contact, first conductive element, with longitudinally extending T-groove and blind hole slots 220 T-groove with blind hole slots 222 Retaining groove with back panel 222' grooved back panel 223 Retaining groove with back panel 420 longitudinal T-indentation 223' grooved back panel

Claims

1. An electrical contact having a first conductive element (10; 110; 210; 310; 410), having an electrical connection element (40) for contacting of the first conductive element (10; 110; 210; 310; 410) and configured for contacting of a second conductive element (60) which can be supplied and having at least one holding member (50) for holding the electrical connection element (40) on the first conductive element (10; 110; 210; 310; 410), wherein the first conductive element (10, 110; 210; 310; 410) has at least one incision (20, 22, 23; 220, 222, 223; 320, 323, 23; 420, 222, 223) in the surface (12; 113, 114) facing toward the second conductive element (60) which can be supplied, wherein the electrical connection element (40) has at least one frontmost (42) and one rearmost (43) positioning section for positioning in an assigned holding groove (22, 23, 22, 223) of the incision of the first conductive element and a contact section (41) for contact with the second conductive element (60) which can be supplied outside the incision, characterized in that one to four holding members (50) are provided, each of which has a greater height than the height of the holding groove(s) (22, 23, 22, 223) of the incision assigned to them, in that at least one holding member (50) is positioned at or within a predetermined distance in front of the frontmost positioning section (42) of the electrical connection element (40) in one of the holding grooves, and either in that at least one holding member (50) is positioned at or up to a predetermined distance behind the rearmost positioning section (43) of the electrical connection element (40) in one of the holding grooves (22, 23) or in that one of the holding grooves is a blind hole groove (222, 223) having a rear wall (222', 223') and in that the rearmost positioning section (43) of the electrical connection element (40) is positioned at or within a predetermined distance in front of the rear wall (222', 223') of the blind hole groove (222, 223) in this blind hole groove (222, 223).

2. The electrical contact as claimed in claim 1, characterized in that the holding member (50) does not project beyond the side wall of the first conductive element in the holding groove.

3. The electrical contact as claimed in claim 1 or 2, characterized in that either the positioning of the electrical connection element (40) is done by pressing the holding member or members (50) into the holding groove in the direct insertion direction (55) or the counter insertion direction (56), or in that the positioning of the electrical connection element (40) is done by pressing the holding member (50) into the holding groove (22, 23) from the side of the insertion direction (55) or the counter insertion direction (56) transversely (59) into the respective holding groove (22, 23) in front of the contact section (42).

4. The electrical contact as claimed in any one of claims 1 to 3, characterized in that the holding members are chosen from the group of balls (50), cylinder sections, cones and cubes.

5. The electrical contact as claimed in any one of claims 1 to 4, characterized in that the electrical contact is a flat contact (10) with an incision (20).

6. The electrical contact as claimed in any one of claims 1 to 4, characterized in that the electrical contact is a bifurcated contact (110) having two incisions (20) situated opposite to each other in the interior of the bifurcate.

7. The electrical contact as claimed in any one of claims 1 to 6, characterized in that the incision is a T-shaped incision (20), in that two holding members (50) are provided for each T-shaped incision (20), and in that these two holding members (50) are positioned in a T-shaped incision in the same holding groove (22 or 23).

8. The electrical contact as claimed in any one of claims 1 to 6, characterized in that the incision is a T-shaped incision (20), in that two holding members (50) are provided for each T-shaped incision (20), and in that these two holding members (50) are positioned in a T-shaped incision in the other holding groove (23 or 22).

9. The electrical contact as claimed in any one of claims 1 to 6, characterized in that the incision is an I-shaped incision (20), in that two holding members (50) are provided for each L-shaped incision (20), which are positioned in the single holding groove (22).

10. The electrical contact according to any one of claims 1 to 9, characterized in that the incision (20, 320) is situated transversely to the supplying direction (65) of the second conductive element which can be supplied (60).

11. The electrical contact as claimed in any one of claims 1 to 9, characterized in that the incision (420) is situated in longitudinal direction to the supplying direction (65) of the second conductive element which can be supplied (60).

12. A method for making an electrical contact as claimed in any one of claims 1 to 11, characterized by the method steps of supplying the positioning section or sections (42, 43, 46) of the electrical connection element (40) for contact with the first conductive element (10, 110, 210, 310, 410) into the incision at a predetermined distance from the side edges of the first conductive element, providing at least one holding member (50) having a greater height than the height of the holding groove(s) (22, 23; 22, 223) of the incision assigned to it, positioning the at least one holding member (50) at or within a predetermined distance in front of the first positioning section (42) of the electrical connection element (40) in one of the holding grooves and either positioning at least one holding member (50) at or up to a predetermined distance behind the rearmost positioning section (43) in one of the holding grooves of the electrical connection element (40) or positioning the rearmost positioning section (43) of the electrical connection element (40) at or within a predetermined distance from the rear wall (222', 223') of a blind hole groove (222, 223) in this blind hole groove (222, 223).

13. The method as claimed in claim 12, characterized in that the step of positioning the electrical connection element or elements (40) in the insertion direction (55) or in the counter insertion direction (56) is done by pressing the holding member (50) into the holding groove (22, 23) in the direct insertion direction (55) or the counter insertion direction (56).

14. The method as claimed in claim 12, characterized in that the step of positioning the electrical connection element or elements (40) in the insertion direction (55) or in the counter insertion direction (56) is done by pressing the holding member (50) into the holding groove (22, 23) from the side of the insertion direction (55) or the counter insertion direction (56) transversely (59) into the corresponding holding groove (22, 23) in front of the corresponding positioning section (42, 43).

15. The method as claimed in any one of claims 12 to 14, characterized in that the holding members (50) are cylinder sections, the one cylinder bottom of which is positioned at the predetermined position at or in front of the assigned positioning section (42 or 43), while the oppositely situated cylinder bottom is positioned inside or up to the edge of the holding groove (22, 23) in front of the side wall of the first conductive element.

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