JP6530163B2 - Bushing for high current plug-in connector to plug - Google Patents

Description

  The present invention relates to a bushing or plug which, when mated, forms a high current plug-in connector.

BACKGROUND ART A high current plug-in connector can serve to form a mechanical and electrical connection between two electrically conductive elements. The connector can be easily mated and released again, and is configured to carry a high current, for example higher than 200A. In this configuration the bush is formed by a sleeve, for example of cylindrical and longitudinal, plug, for example, which can also introduce cylindrical, longitudinal contact pins.

  In order to achieve mechanical retention of the plug in the bush and good electrical connection between the sleeve of the bush and the contact pin of the plug, a resiliently flexible plate is usually provided between the sleeve and the contact pin It is done. These plates can be elastically deformed when the plug is pushed into the bush, thereby forming a mechanically preloaded connection between the sleeve of the bush and the contact pins of the plug.

  In the following, the features of the conventional high-current plug-in connector and the features of the high-current plug-in connector formed according to the invention are mainly described by way of example of a suitably formed bush and a contact plate provided on this bush. Those skilled in the art will appreciate that the underlying ideas and ideas can be diverted to the corresponding plug configurations as well. In particular, the contact plate ring, which serves for the adjustment of the positive mechanical and electrical contacts of the sleeve of the bush and the contact pin of the plug, may be arranged inside the sleeve and thus form part of the bush It may also be located outside the contact pins and thus form part of the plug.

  FIG. 1 shows a bushing 101 for a conventional high current plug-in connector. Inside the cylindrical sleeve 103, a contact plate ring 105 is disposed. The contact plate ring 105 forms a plurality of contact plates 107 extending in the longitudinal direction of the sleeve 103. FIG. 2 shows a side view of the bushing 101 with the sleeve 103 partially cut away. FIG. 3 shows a cross-sectional view of a portion of the bush 101 with the contact pins 111 of the plug 109 introduced into the sleeve 103. Each contact plate 107 protrudes inward in the sleeve 103 in an arc shape, and is in contact connection with the contact pin 111 of the plug 109 at a point 113.

  The current flowing between the bush 101 and the plug 109 through the contact plate 107 when using high currents, for example higher than 200 A, can lead to strong heating due to the heat loss in the contact resistance. It is therefore desirable that the contact resistance be kept as small as possible inside the high current plug-in connector.

  Furthermore, in high-current plug-in connectors, the absolute misalignment between the contact pin 111 of the plug 109 and the sleeve 103 of the bush 101 is substantially greater than in the case of the current-in plug connector in general. , May occur relatively large. For example, in a plug-in connector in which a plurality of bushes are assembled in a common bush housing and mated with a plurality of plugs assembled in a common plug housing, the contact pins 111 of the plug 109, for example, on the basis of manufacturing tolerances. Can no longer be centered and can not be introduced into the sleeve 103 of the bush 101 exactly in the longitudinal direction. In spite of the above-mentioned possible misalignment, it is desirable that a large number of contact points be formed sufficiently between the sleeve and the contact pin 111 via the contact plate 107, in which case the contact resistance is kept small. It is desirable to do. In this configuration, it is also important to provide sufficient contact force or vertical force at each contact point between the contact plate 107 and the adjacent sleeve 103 or the adjacent contact pin 111.

  The arrangement of the bush or the correspondingly configured plug according to the invention proposed in the present application can make it possible to, in particular, advantageously fulfill the above requirements for high-current plug-in connectors.

  According to a first aspect of the invention, a bush for a high current plug-in connector for a plug is proposed. In this configuration, the bushing has an elongated sleeve and a contact plate ring disposed within the sleeve. The contact plate ring has a plurality of contact plates extending in the longitudinal direction of the sleeve. These contact plates project from the sleeve towards the interior of the sleeve. The bush is characterized in that each contact plate has a substantially 8-shaped cross section.

  According to a second aspect of the invention, a similarly constructed plug for a high current plug-in connector with a bush is proposed. The plug has an elongated contact pin and a plate ring disposed outside the contact pin. The contact plate ring may have the same features as the features described in the context of the bush formed according to the invention.

  The idea and idea for the inventive arrangement of the invention or the inventive plug arrangement proposed in the present application is, inter alia, as a structure in which the contact plate can be bent inward as easily as in a conventional high-current plug-in connector. It can be seen that it is no longer formed, but instead has a complex 8-shaped geometry. This makes it possible, inter alia, that each contact plate not only contacts the corresponding counterpart of the high-current plug-in connector, i.e. the plug or the bush, as in the conventional contact plate, but at substantially only one point, Contacting at two points which are mutually spaced apart in the direction can be achieved. This makes it possible in particular to reduce the contact resistance. Furthermore, the special eight-shaped geometry allows to achieve improved elastic deformability of the contact plate so that it is sufficiently good even if the plug is not positioned exactly with respect to the bush Mechanical and electrical contacts can be guaranteed.

  In this configuration, a figure-of-eight cross-section is understood to have a contour approximately corresponding to that of the numeral "8" in the plane in which each contact plate is perpendicular to the circumferential direction of the contact plate ring. be able to. The 8-shaped contact plate can thus have two thickened regions. In these areas the 8-shaped contact plate projects towards the inside of the sleeve, rather than in the waist-shaped narrowing area between the two thickened areas. Thus, in the further inwardly projecting thickened region, each contact plate can be in contact with the contact pins of the plug on the inner surface and in contact with the sleeve of the bush on the outer side, so that respectively two contact points are formed can do. The waisted and thinly formed area between the contact points can provide the desired advantageous elastic deformation characteristics of the contact plate, as described in detail below.

  According to another configuration, each contact plate can have two plate segments which are arranged next to each other in the longitudinal direction and which are approximately arc-shaped in cross section. In this configuration, it is desirable for the first end of the first plate segment to be connected to the first end of the second plate segment. In contrast, the second ends of the first and second plate segments are preferably arranged next to one another in a cantilever manner, that is to say they are not connected to one another. The two arc-shaped plate segments can each form an "8" ring, and the first and second ends of the plate segment can be formed by the first and second rings of "8". Can be formed as a transition between them. In this configuration, the structure of the contact plate is not necessarily fully tightened at the waist, as in the "8" case, ie, the first and second ends of the plate segment do not abut at the intersection point It is noted that the figure 8-shaped contact plate may be sufficient for the function of the contact plate, if it is at least partially tapered in the waist region between the two thickened regions. I want to.

  The second ends of the plate segments are configured and arranged to be able to move relative to one another upon deformation of the contact plate due to pressure acting on the contact plate radially outwards Good. Stated differently, when the contact pins of the plug are introduced into the sleeve of the bush and thereby exert a radially outward acting pressure on the contact plate mounted between the contact pin and the sleeve, 2 The cantilevered second ends of the two plate segments can move relative to one another. Due to the pressure, the contact plate is partially elastically deformed. In particular in this configuration it is desirable for the two second ends to move relative to one another in a direction parallel to the longitudinal direction of the bush or plug.

  Due to the above-mentioned movability, the contact plate of the high current plug-in connector is preferably deformable during the alignment of the high current plug-in connector, so that the contact pins of the plug are introduced into the sleeve of the bush without being centered or inclined. Even so, a positive contact of the contact plate to the two components of the high-current plug-in connector can be ensured.

  According to a further configuration, the adjacent contact plates of the contact plate ring may be connected to one another by a web extending transversely to the longitudinal direction of the bush. In other words, the webs can form a mechanical connection between the contact plates which are arranged side by side and preferably parallel to one another. Preferably, at least two webs are respectively formed between two adjacent contact plates. In this configuration, each one web projects laterally towards the adjacent contact plate in one region of the plurality of thick sections of the 8-shaped contact plate. Among other things, high mechanical stability of the contact plate ring can be achieved.

  According to a further configuration, the contact plate ring may consist of one piece. The contact plate ring is preferably made of an electrically conductive and mechanically elastic material. For example, the contact plate may be made of sheet metal. The contact plate ring can in this configuration be manufactured simply from sheet metal, for example by means of a stamping process and a bending process.

  According to a further configuration, the sleeves of the bush can have two inwardly projecting projections which are arranged offset relative to one another in the longitudinal direction. The contact plate ring may be held against axial movement between the two projections inside the sleeve in this configuration. These protrusions may, for example, be formed in one piece with the rest of the sleeve of the bush. For example, the projection may be formed on the sleeve as an annular circumferentially extending structure, for example in the form of an annular groove.

  It should be mentioned that the possible advantages and features of the arrangement of the invention are described, in part, in connection with the bush and in part with the plug of the high current plug-in connector. Those skilled in the art can combine or replace the above features as appropriate, as well as divert from bush to plug and vice versa. Other configurations and possible synergy can be achieved.

It is a perspective view of the conventional bush. FIG. 1 is a partially sectioned side view showing a conventional bush. FIG. 1 is a cross sectional view of a conventional high current plug-in connector. FIG. 6 is a cross-sectional view of the bushing according to the invention for a high current plug-in connector with the bushing and the plug not mated. FIG. 2 is a plan view of a stamped sheet metal for the contact plate ring of a bush according to the invention; Figures 6a and 6b are cross-sectional views showing the front and back contact plates bent in a figure of eight as viewed in the viewing direction A of Figure 5; FIG. 6 is a cross-sectional view seen in the viewing direction B of FIG. 5 showing the sheet metal folded into the contact plate ring shown in FIG. 5; FIG. 5 shows a high current plug-in connector in which the plug and bush according to the invention are mated. FIG. 5 shows a high current plug-in connector in which the plug and bush according to the invention are mated.

  In the following, advantageous embodiments of the invention will be described in detail with reference to the drawings. Neither the description nor the drawings can be interpreted restrictively as the present invention.

  The drawings are merely schematic and not to scale.

Embodiments of the Invention FIG. 4 shows an embodiment of a bush 1 according to the invention for a high current plug-in connector to a plug 9. The bush 1 has a longitudinal, cylindrical shape and a sleeve 3 opened forward. Inside the sleeve 3 a contact plate ring 5 is accommodated. The contact plate ring 5 bends toward the inner surface of the wall 4 of the sleeve 3. The plane Y in which the contact plate ring 5 extends is arranged perpendicularly to the longitudinal extension direction X of the preferably elongated sleeve 3 in this embodiment.

  Furthermore, on the inner surface of the wall portion 4 of the sleeve 3, two inward projecting protrusions 13 and 15 formed in an annular shape are formed. The projections 13, 15 are offset relative to the longitudinal direction X. The contact plate ring 5 is arranged between the two projections 13, 15 and is free from sliding off in the axial direction by these projections 13, 15.

  The contact plate ring 5 has a plurality of vertically elongated contact plates 7 which are arranged side by side in the circumferential direction and extend in the longitudinal direction X. As can be seen in particular from the enlarged view shown in FIG. 4, each contact plate 7 has an 8-shaped structure in cross section. The thickened regions 17, 19 in which the contact plate 7 projects further into the interior of the sleeve 3 are formed by the substantially arc-shaped plate segments 21, 23 in cross-section. The two plate segments 21, 23 lie next to one another in a waist-like narrowing area 25. The first end 27 of the first plate segment 21 is in this embodiment connected to the first end 29 of the second plate segment 23, preferably with this first end 29. It is integrally formed. The second end 31 of the first plate segment 21 and the second end 33 of the second plate segment 23 are not connected to one another but are arranged next to one another in a cantilever manner. .

  The possible construction of the contact plate ring 5 and its manufacture will be described in the following on the basis of FIGS. The contact plate ring 5 can be made of a mechanically elastic, well-conductive material, for example sheet metal. This sheet metal can first be punched into an appropriate shape, as shown in FIG. In this embodiment, a linear region which will later form the contact plate 7 and a web 35 which joins this linear region are produced. In the side views shown in FIGS. 6a and 6b described in the viewing direction A shown in FIG. 5, the region of the initially formed sheet metal (FIG. 6a) is described by the arrows in FIG. 6b. By applying an appropriate force, it can be bent into the desired figure of eight. The sheet metal can also be pre-bent into an annular shape, as shown in FIG. 7, which is described subsequently or in some cases described in the viewing direction B of FIG.

  FIGS. 8 and 9 visualize the formation of electrical and mechanical contacts between the sleeve 3 of the bush 1 and the contact pins 11 of the plug 9 via the contact plate 7 of the contact plate ring 5. In this embodiment in FIG. 8 the plug 9 is centered and inserted straight into the bush 1. On the other hand, in FIG. 9, the plug 9 is eccentrically introduced into the bush 1 obliquely. In both embodiments, the contact pins 11 contact the contact plate 7 at 37, 39 at two points. The pressing of the contact pin 11 and the sleeve 3 causes an elastic deformation of the arc-shaped plate segments 21, 23. The plate segments 21, 23 are pressed towards the sleeve 3 by the pushed-in contact pins 11 in the thickened regions 17, 19.

  As can be clearly seen in particular from FIG. 9, the elastic deformation of the two arc-shaped plate segments 21, 23 may be independent of one another, so that the contact points 37, 39 also move independently of one another, the contact pins It can be in close contact with the position of Therefore, the 8-shaped contact plate 7 can contact the contact pins 11 as well at two points 37, 39 as well and does not affect each other. This is particularly advantageous if the contact pins 11 are introduced into the sleeve 3 at a slight angle.

  Furthermore, the 8-shaped geometry of the contact plate 7 makes it possible to press the two arc-shaped plate segments 21, 23 downward when inserting the contact pin 11 into the sleeve 3. The two cantilevered second ends 31, 33 can be in contact with one another and possibly also at the first ends 27, 29 located below. That is, the waists of the 8-shaped contact plates are pushed together to form a common contact point 41. This can provide additional mechanical support for the cantilevered second ends 31, 33, which can increase the deformation resistance of the contact plate 7. This makes it possible to increase the normal force at the contact points 37, 39 provided by the contact plate 7.

  Most elastic deformation of the contact plate 7 usually occurs in the thickened regions 17, 19 of the two arc-shaped plate segments 21, 23. The higher the pressure generated when the bush 1 and the plug 9 are brought together, the more remarkable the arc-shaped plate segments 21 and 23 deform into an elliptical shape. In addition, the contact plate 7 likewise deforms elastically in the middle, ie in the region of the waist, near the contact point 41 there. The reason is that a part of the generated deformation acts on the area of the contact point 41 via the cantilevered second ends 31 and 33, so that the contact point 41 is directed downward. It is also pushed. Accordingly, the region 25 of the contact plate 7 which is narrowed towards the waist also elastically deforms.

  Thus, the overall elastic deformation characteristics of the 8-shaped contact plate 7 are greater than in the case of the conventional contact plate. This may be particularly important if the contact pin 11 is inserted into the sleeve with a large misalignment. In this embodiment, the contact plate 7 can be deformed extremely remarkably on the side where the gap between the contact pin 11 and the inner surface of the contact is small. In such a case, a large elastic deformation characteristic of the contact plate 7 is required, since otherwise plastic deformation may be forced in some parts of the contact plate. Such plastic deformation can then be a problem in the later mating process, inhibiting the generation of sufficient normal force between the contact plate 7 and the plug connector component.

  The invention relates to a bush 1 for a high-current plug-in connector for a plug 9, from an elongated sleeve 3 and a contact plate ring 5 arranged in the sleeve 3 and extending in the longitudinal direction of the sleeve 3. A contact plate ring 5 having a plurality of contact plates 7 projecting toward the inside of the sleeve 3, each contact plate 7 having a substantially 8-shaped cross section .

  Preferably, each contact plate 7 is arranged next to one another in the longitudinal direction X and has two plate segments 21, 23 of circular arc shape in cross section, and the first end of the first plate segment 21 27 are coupled to the first end 29 of the second plate segment 23, the second ends 31, 33 of the first and second plate segments 21, 23 being cantilevered next to each other Are arranged.

  Preferably, the second ends 31, 33 of the plate segments 21, 23 can move relative to one another upon deformation of said contact plate 7 due to the pressure acting radially outward on the contact plate 7 It is configured and arranged.

  Preferably, the contact plates 7 which are adjacent to one another are connected to one another by means of webs 35 which extend transversely to the longitudinal direction X.

  Preferably, the contact plate ring 5 is composed of one member.

  Preferably, the contact plate ring 5 is made of sheet metal.

  Preferably, the sleeves are arranged offset relative to one another in the longitudinal direction X and have two inwardly projecting projections 13, 15 and the contact plate ring 5 comprises two projections 13, Held between 15 for axial movement.

  Furthermore, the invention relates to a plug 9 for a high-current plug-in connector with respect to the bush 1, which comprises a long contact pin 11 and a contact plate ring 5 arranged outside the contact pin 11, the longitudinal direction of the contact pin 11. A contact plate ring 5 having a plurality of contact plates 7 extending in the X direction and projecting outward from the contact pins 11; each contact plate 7 having a substantially eight-letter shape Have a cross-section of

DESCRIPTION OF SYMBOLS 1 Bush 3 Sleeve 4 Sleeve wall 5 Contact plate ring 7 Contact plate 9 Plug 11 Contact pin 13 Protrusion 15 Protrusion 17 Thickened area 19 Thickened area 21 Plate segment 23 Plate segment 25 Thinned area 27 1st End 29 First end 31 Second end 33 Second end 35 Web 37 Point 39 Point 41 Contact point X Longitudinal direction Y Plane 101 Bush 103 Sleeve 107 Contact plate 109 Plug 111 Contact pin

Claims (7)

A bushing (1) for a high current plug-in connector to the plug (9),
With a long sleeve (3),
A contact plate ring (5) disposed within the sleeve (3), extending longitudinally of the sleeve (3), projecting from the sleeve (3) towards the interior of the sleeve (3) A contact plate ring (5) having a plurality of contact plates (7),
Each contact plate (7) has an approximately 8-shaped cross section,
Each contact plate (7) comprises two cross-sectionally arcuate plate segments (21, 23) arranged next to each other in the longitudinal direction (X),
The first end (27) of the first plate segment (21) is coupled to the first end (29) of the second plate segment (23),
At the time of insertion of the contact pin (11) into the sleeve (3), the first and second plate segments (21, 23) are pressed, and the first and second plate segments (21, 23) The second ends (31, 33) of the first and second plate segments (21, 23) are cantilevered such that the second ends (31, 33) of the A bush for a high current plug-in connector for a plug, characterized in that they are arranged laterally next to one another in relation to the longitudinal direction (X).   At the time of insertion of the contact pin (11) into the sleeve (3), the first and second plate segments (21, 23) are pressed and the first or second plate segment (21, 23) The bush according to claim 1, wherein the second end (31, 33) of (1) contacts the first end (27, 29) of the first or second plate segment (21, 23).   The second end (31, 33) of the first and second plate segments (21, 23) is the contact plate (7) based on the pressure acting radially outward on the contact plate (7). The bushing according to claim 2, wherein the bushing is configured and arranged to be able to move relative to one another when deformed. Tonaria' in which the contact plates (7) each other, characterized in that it is coupled to one another by a web (35) extending transversely to the longitudinal direction (X), Claims 1 to 3 The bush according to any one of the above. The contact plate ring (5) is composed of one member, any one bushing as claimed in claims 1 to 4. The contact plate ring (5) is characterized in that it is manufactured from sheet metal, any one bushing as claimed in claims 1 to 5. The sleeves are arranged offset relative to one another in the longitudinal direction (X) and have two inwardly projecting projections (13, 15), the contact plate ring (5) being the two are held against movement in the axial direction between the protruding portions (13, 15), any one bushing according to claims 1 to 6.

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