Conical contact spring sleeve, and electrical connector and plug connection having such a contact spring sleeve

Abstract

To provide a contact spring sleeve causing a decrease in contact resistance.SOLUTION: The present invention relates to a conical contact spring sleeve 1 for plug-shaped or socket-shaped conical contacts 82, 90. The contact spring sleeve 1 includes: at least one radial concavity 50, which projects radially inwards with respect to the conical shape 8 beyond an inner peripheral surface 52 of the conical contact spring sleeve 1; and / or at least one radial convexity 56, which projects radially outwards beyond an outer peripheral surface 58 of the conical contact spring sleeve 1. By using the at least one radial concavity 50 and / or the radial convexity 56, a contact area 144 is defined, the contact spring sleeve 1 is fixed, and a preload can be built up.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a contact spring sleeve for electrical contacts, particularly for use in automotive applications, for example but not exclusively with currents in the range of 300-500 A. Furthermore, the present invention relates to electrical connectors and plug connections having such contact spring sleeves. [Background technology]

[0002] In automotive engineering, various applications use removable plug connections for transmitting electric current and electrical signals. For example, in such plug connections, cylindrical pin contacts and cylindrical sleeve contacts are used together with cylindrical contact springs to create electrical contact. When the pin contacts and sleeve contacts are slid into each other, friction occurs between the respective contact surfaces from the beginning of the insertion process until the end position is reached. This friction can cause damage to the respective contact surfaces and therefore limit the maximum allowable contact force that can be exerted by the contact spring. The applicability of coatings to the respective contact surfaces is also limited due to the expected high surface wear.

[0003] Both the contact force and the condition of the contact surfaces affect the contact resistance, which in turn significantly affects the current carrying capacity of the plug connection. Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention is based on the object of making a contact spring sleeve which avoids or at least reduces the above-mentioned drawbacks. [Means for solving the problem]

[0005] This object is solved by a conical contact spring sleeve for plug- or socket-like conical contacts, the conical contact spring sleeve having at least one radially concave portion projecting radially inward relative to the conical shape beyond the inner circumferential surface of the conical contact spring sleeve and / or at least one radially convex portion projecting radially outward beyond the outer circumferential surface of the conical contact spring sleeve, the inner circumferential surface, which may also be synonymously referred to as the inner circumferential surface or inner shell surface, being an inner conical surface, and / or the outer circumferential surface, which may also be synonymously referred to as the outer circumferential surface or outer shell surface, being an outer conical surface.

[0006] The terms "conical" and "cone-shaped" are used to describe shapes that include not only cones and truncated cones, but also wedges and truncated wedges.

[0007] The advantages of the present invention include, on the one hand, the ability to define a contact area for the conical contact, by means of at least one radial recess and / or protrusion, that forms a contact surface for electrical contact with a complementary mating contact. For this purpose, the conical contact and the mating contact can be slid into each other along a plugging direction, particularly a plugging direction parallel to the axial direction of the cone. Depending on the application, the contact area can be point-like or planar. Furthermore, the contact area of ​​the at least one radial recess and / or protrusion can be used to absorb external forces. For example, a contact spring sleeve can thus be fastened to the conical contact.

[0008] On the other hand, the complementary conical shapes of the conical contact and the mating contact can be partially slid into one another without direct contact, which advantageously reduces wear that occurs when the conical contact and the mating contact are slid into one another to an end position. Direct contact between the conical contact and the mating contact occurs only in the immediate vicinity of the end position. The end position can be characterized by the conical contact and the mating contact being located at their respective abutments.

[0009] For example, at the abutment, the end face of the conical contact can rest on a shoulder and / or a recess of the mating contact. Alternatively or additionally, maximum compression of the contact spring sleeve in the radial direction of the cone shape can be achieved at this abutment.

[0010] However, the end positions can also be located at a distance from the abutment. In particular, conical contacts can function without a separate abutment and can be used accordingly.

[0011] Additionally, when the complementary conical shapes are slid into one another, a self-aligning action can be achieved that results in axial alignment of the conical contact and the mating contact relative to the conical shapes, thereby providing uniform electrical contact. Furthermore, the conical shapes can be adapted to create a self-locking connection between the conical contact and the mating contact, where the end position can be characterized by the presence of the self-locking connection.

[0012] The invention can be further improved by the following embodiments, each of which is advantageous in itself and can also be combined with one another in any way.

[0013] According to an embodiment of the invention, the contact spring sleeve may have a plurality of webs, at least one of which has at least one radial recess and / or protrusion, and in particular for this purpose the portion of the at least one web having the radial recess and / or protrusion may protrude inwards and / or outwards.

[0014] This embodiment is advantageous since at least one radial depression and / or projection can be easily produced in the web, for example by imparting a curved shape to the at least one web.

[0015] Preferably, the webs can extend axially relative to the conical shape, and in particular at an angle relative to the insertion direction. More precisely, the direction of web extension includes an axial component, so that engagement at the inner and outer edges of the webs is prevented when the conical contact and the mating contact are slid together. The direction of web extension can also include a radial and / or circumferential component relative to the conical shape.

[0016] Optionally, the webs may extend axially relative to the cone shape between two rings, and at least one radial recess and / or protrusion is spaced from the rings. In particular, the rings may be integrally connected to the webs, so that the rings hold the webs together and distribute any mechanical stresses evenly across all the webs.

[0017] Alternatively or additionally, at least one radial recess and / or protrusion may be located on one or both rings to create additional contact points.

[0018] These rings can be closed or partially open, in particular circular or polygonal rings. Circular rings are advantageous because their round shape makes them less susceptible to stress peaks. Polygonal rings, when inserted into corresponding complementary recesses, can absorb the forces acting circumferentially on the cone, thus preventing twisting of the contact spring sleeve in conical contacts.

[0019] As an alternative or additional anti-torsion measure, at least one lamellar tongue can be provided on the contact spring sleeve, protruding perpendicular to the insertion direction from at least one of the two rings. The at least one lamellar tongue can be inserted into a recess extending perpendicular to the insertion direction or into a slot in the conical contact extending perpendicular to the insertion direction so as to absorb circumferential forces acting on the spring contact. Preferably, multiple lamellar tongues are provided on the contact spring sleeve, the multiple lamellar tongues being distributed at a certain distance around the circumference of at least one of the two rings.

[0020] According to another embodiment of the invention, the rings can be located at the axial ends of the contact spring sleeve relative to the cone shape, in this way they can protect the web from bending, for example, while sliding the conical contact and the counter contact against each other.

[0021] According to another embodiment, the web can be in the form of a sheet or leaf spring, which allows for a resilient spring configuration of the web, in particular for creating a preload in the contact spring sleeve, as will be explained in more detail below.

[0022] Optionally, the contact spring sleeve may be a stamped, bent section having a plurality of sheet- or leaf-shaped webs, which are preferably connected together at two opposite ends by a connecting piece bent to form a ring. In this embodiment, the contact spring sleeve can be produced economizing on material and costs, especially in automated production situations.

[0023] Furthermore, the contact spring sleeve, the conical contact, and / or the mating contact can have a coating, such as a silver coating or a coating containing at least one precious metal component, at least partially, particularly on at least one contact surface. The coating can be applied by galvanic, thermal, chemical, or physical methods. For example, CVD, PVD, or other coating techniques can be used. The coating improves the surface properties of the coated contact surface, resulting in reduced contact resistance and therefore increased current-carrying capacity.

[0024] The first object can also be achieved by an electrical connector having a plug- or socket-like conical contact and a contact spring sleeve according to the above-mentioned embodiment. According to the advantages already mentioned, the plug according to the invention is characterized by being particularly insensitive to wear.

[0025] The connector may include a connector housing in which the conical contacts and / or contact spring sleeves are fixed. The connector housing may optionally have a linear guide for moving the mating connector having the mating contacts forward. In particular, the linear guide may be adapted to continuously align and slide the conical contacts and the mating contacts into each other during the insertion process between the connector and the mating connector. This prevents the contact surfaces of the conical contacts and the mating contacts from unnecessarily rubbing against each other during the insertion process in which the conical contacts and the mating contacts are slid into each other. This improves the wear behavior of the connector and the mating connector.

[0026] Alternatively or additionally, the connector housing may have a fastening device for fastening a mating connector. Preferably, this is a fastening device for creating a detachable connection, such as a snap-in connection and / or a screw connection. Optionally, the connector housing may have an additional locking device, for example a connector position lock.

[0027] Additionally, in an optional embodiment, at least one finger protection element may be attached to the conical contact and / or the connector housing to protect the contact surfaces from unintentional contact with foreign objects such as a human finger, thus increasing the electrical safety of the electrical connector according to the present invention.

[0028] The conical contacts can be welded, soldered, and / or crimped to at least one conductor of an electrical cable, for example, a shielded cable. Alternatively, the conical contacts can be screwed, welded, and / or soldered to at least one conductor of an electrical rail, for example, a bus bar. Thus, the conical contacts can be used to transmit electric current or electrical signals.

[0029] To simplify handling, in another embodiment of the connector, the contact spring sleeve can be constrained to fit onto the conical contact. In particular, the contact spring sleeve can be fixed to the conical contact in the axial, radial, and / or circumferential directions. As mentioned above, at least one lamellar tongue of the contact spring sleeve can be used for this purpose. The connector housing and / or additional elements can also be used to constrain and fit the contact spring sleeve.

[0030] Alternatively or additionally, the contact spring sleeve may be secured by at least one radial recess and / or protrusion. For this purpose, the conical contact may have at least one embossment projecting radially outward beyond the outer circumferential surface of the conical contact or radially inward beyond the inner circumferential surface of the conical contact. For example, in the case of a conical contact with an outer cone, the outwardly projecting embossment may engage with at least one radial recess of the contact spring sleeve. In the case of a conical contact with an inner cone, the inwardly projecting embossment may engage with at least one radial protrusion of the contact spring sleeve.

[0031] Preferably, the contact spring sleeve is removably attached to the conical contact, which allows the contact spring sleeve to be replaced, for example after a predefined number of plugging cycles, and in particular, a defective contact spring sleeve can be easily replaced with a new contact spring sleeve.

[0032] To simplify the replacement process, the contact spring sleeve can be adapted to be radially and / or circumferentially expandable or compressible. Preferably, both rings of the contact spring sleeve are open at at least one point, each ring having a constant flexible cross-section. Thus, the contact spring sleeve can be snapped onto the conical contact or expanded to fit into the conical contact.

[0033] In another possible embodiment, the ring of the contact spring sleeve can be arranged flush with the insertion opening of the socket-like conical contact. In particular, the outer edge of the ring extends in one plane with the inner edge of the insertion opening. This allows a continuous geometric shape to be provided on the inside of the socket-like conical contact, so that there is no risk of step-like obstacles getting caught when the conical contact and the mating contact are slid into each other.

[0034] The object described above is also achieved by an electrical plug connection comprising a connector according to the above-described embodiment and a mating connector having conical mating contacts that are equiangular with the conical contacts of the connector, whereby the conical contacts of the connector and the mating contacts of the mating connector are electrically connected via conical contact spring sleeves. Preferably, the conical contacts of the connector and the mating contacts of the mating connector are connected in a self-locking manner. Due to the self-locking connection, a self-retaining effect can be generated, so that no additional restraining device is required, greatly simplifying the structure of the electrical plug connection.

[0035] To produce a self-locking connection, the half cone angle is preferably less than the arctangent of the coefficient of static friction between the conical contact and the mating contact, and therefore is less than the friction angle, so that when the conical contact and mating contact are slid against each other, a self-locking frictional pair is formed.

[0036] Additionally or alternatively, the conical contacts, the conical contact spring sleeves, and / or the mating contacts of the mating connector may be at least partially lubricated. In particular, the contact surfaces of the conical contacts, the conical contact spring sleeves, and / or the mating contacts may be oiled, greased, or lubricated with contact oil, contact grease, or other contact lubricant. This increases the resistance of the corresponding contact surfaces to contamination, oxidation, and corrosion.

[0037] Due to changes in friction conditions caused by contact oil, contact grease, or contact lubricant, the size relationship between the half angle of the cone angle and the corresponding arctangent of the static friction coefficient may be reversed, and therefore a self-locking connection will no longer be established. In this case, instead of a self-locking connection, the above-mentioned fastening device of the connector housing of the connector can be used to fasten the mating connector.

[0038] According to a further embodiment of the plug connection, the contact spring sleeve of the connector can have at least one axially and / or radially flexible spring portion. Preferably, the contact spring sleeve has multiple flexible spring portions, each formed by a web of the contact spring sleeve. When the conical contact and the mating contact are slid into each other, the conical contact and the mating contact can compress the contact spring sleeve, which causes the flexible spring portion to deform, in particular stretch, and thus builds up a preload on the contact spring sleeve. The preload on the contact spring sleeve ensures a reliable contact between the conical contact and the mating contact. In particular, the pre-loaded contact spring sleeve can compensate to some extent for relative movement between the conical contact and the mating contact under dynamically changing external stresses such as vibrations and / or shocks, thereby increasing the vibration resistance of the plug connection.

[0039] The invention will now be explained in more detail with reference to the drawings on the basis of several embodiments, the different features of which can be combined with one another in any way as described above. [Brief explanation of the drawings]

[0040] [Figure 1] 1 is a schematic perspective view of a contact spring sleeve of the present invention according to a first embodiment; [Figure 2] 4 is a schematic side view of a contact spring sleeve of the present invention according to a second embodiment; FIG. [Figure 3] 3 is a schematic view of the inventive contact spring sleeve according to the second embodiment of FIG. 2; [Figure 4] 1 is a schematic perspective view of an electrical connector of the present invention according to a possible embodiment; [Figure 5] 1 is a schematic perspective exploded view of an electrical plug connection of the present invention according to a possible embodiment; [Figure 6]10 is a schematic cross-sectional view of an electrical plug connection of the present invention according to another possible embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0041] Firstly, the schematic structure of a possible embodiment of a contact spring sleeve 1 and an electrical connector 2 according to the present invention is shown with reference to Figures 1 to 4. Then, the schematic structure of a possible embodiment of an electrical plug connection body 4 will be described with reference to Figures 5 and 6.

[0042] As shown in FIG. 1 , the contact spring sleeve 1 according to the invention can have a conical shape 8 extending in an axial direction 12. For this purpose, the conical contact spring sleeve 1 can be formed as a hollow truncated cone 14. In particular, the conical contact spring sleeve 1 can comprise a plurality of webs 16, which are sheet-shaped or leaf-spring shaped and arranged in a closed configuration. The webs 16 extend obliquely in the axial direction 12 relative to the conical shape 8. More precisely, the direction of extension of the webs 16 has a component 18 pointing in the axial direction 12. Additionally, the direction of extension of the webs 16 can also have a radial component 20 and / or a circumferential component.

[0043] The web 16 can extend between two rings 22a, 22b relative to the conical shape 8 and can be connected to the two rings 22a, 22b by a material bond, whereby the rings 22a, 22b extend in a circumferential direction 24 relative to the conical shape 8. In particular, two opposite ends 26 of each web 16 relative to the axial direction 12 are preferably integrally connected to a ring 22a, 22b, respectively, so that the rings 22a, 22b are each arranged at one axial end 28 of the conical contact spring sleeve 1. The rings 22a, 22b can be closed or partially open rings, in particular polygonal rings 32a, 32b or circular rings 30a, 30b.

[0044] 1 shows a conical contact spring sleeve 1 having polygonal rings 32a, 32b that are open at at least one point 34. A closed ring (not shown) can be formed, for example, by a deep drawing process or material bonding closure of at least one point 34.

[0045] The polygonal rings 32a, 32b act as connecting pieces 36a, 36b, which connect together the respective ends 26 of the webs 16. Each of the connecting pieces 36a, 36b has at least one bend 40, for example two bends 40a, 40b, between the two circumferentially adjacent webs 16a, 16b, so that the conical contact spring sleeve 1 has a plurality of facets 48 on the inner and outer surfaces 42, 44 of the polygonal rings 32a, 32b, the facets 48 being separated by bent edges 46.

[0046] Furthermore, the conical contact spring sleeve 1 has at least one radial concave portion 50 that projects radially inward relative to the conical shape 8 beyond an inner circumferential surface 52, preferably an inner conical surface 54, of the conical contact spring sleeve 1, and / or at least one radial convex portion 56 that projects radially outward beyond an outer circumferential surface 58, preferably an outer conical surface 60, of the conical contact spring sleeve 1. In the illustrated embodiment, the conical contact spring sleeve 1 has a plurality of such radial concave portions 50 and radial convex portions 56.

[0047] The radial recesses 50 and radial protrusions 56 can be located on the webs 16 of the conical contact spring sleeve 1. The webs 16 can have a curved shape 62 such that at least one portion 64 of each web 16 is semi-cylindrical inward and at least one portion 66 of each web 16 is bulging outward. In particular, the semi-cylindrical portions 64 and bulging portions 66 can be alternately arranged along the axial direction 12 and / or the circumferential direction 24, such that evenly distributed contact points 68 and contact surfaces 70 are formed on the conical contact spring sleeve 1. This is shown in FIGS. 1-3.

[0048] 2 and 3 show a conical contact spring sleeve 1 having alternative circular rings 30a, 30b, which are also open at at least one point 34. Alternatively, the circular rings 30a, 30b can also instead be closed rings (not shown).

[0049] Additionally, the radially concave portion 50 and / or the radially convex portion 56 can be formed as a dome-shaped knob 72, which can be seen to protrude radially inward on the inner surface 42 or radially outward on the outer surface 44, for example, on at least one of the two rings 22a, 22b.

[0050] The conical contact spring sleeve 1 may also have at least one anti-twist feature 74. In the illustrated embodiment, the anti-twist feature 74 is realized by at least one lamellar tongue 76, for example three lamellar tongues 76. The lamellar tongue 76 may protrude perpendicular to the axial direction 12 from at least one of the two rings 22 a, 22 b. In particular, the lamellar tongue 76 may be integrally connected to an outer edge 78 of one of the two rings 22 a, 22 b and may be bent outward in the radial direction 6. Alternatively, the at least one lamellar tongue 76 may be bent inward.

[0051] The conical contact spring sleeve 1 shown may be, for example, a perforated bent section 80, formed by perforating a flat metal workpiece, such as a contact sheet, and then bending it into the shape shown. Of course, the conical contact spring sleeve 1 may also be formed by other manufacturing methods, preferably automated manufacturing methods.

[0052] FIG. 4 illustrates an exemplary embodiment of an electrical connector 2 according to the present invention. The electrical connector 2 may include a conical contact spring sleeve 1 and a socket-like conical contact 82. In particular, the socket-like conical contact 82 has a cylindrical sleeve shape 84 within which a receptacle 86 having an inner cone 88 is formed. The conical contact spring sleeve 1 may be inserted into the receptacle 86 and may be positioned in surface contact with the inner cone 88. The conical contact spring sleeve 1 is preferably captive within the socket-like conical contact 82. More precisely, the conical contact spring sleeve 1 is fixed axially 12, radially 6, and circumferentially 24 within the socket-like conical contact 82.

[0053] Alternatively, the electrical connector 2 may also include a plug-like conical contact 90. In this case, the conical contact spring sleeve 1 is disposed on an outer cone 92 of the plug-like conical contact 90. In particular, the plug-like conical contact 90 is formed as a pin contact 94 having the outer cone 92 at one axial end 96. In this case, the conical contact spring sleeve 1 is surface-mounted to and constrained to be fixed to the outer cone 92.

[0054] As further shown in FIG. 4 , the conical contact spring sleeve 1 is detachably mounted on the socket-like conical contact 82. For this purpose, the lamellar tongues 76 of the conical contact spring sleeve 1 can each be arranged to engage with a recess 98 of the socket-like conical contact 82 extending perpendicular to the axial direction 12 so as to absorb forces acting on the conical contact spring sleeve 1 in the circumferential direction 24. For this purpose, the recesses 98 can be formed as grooves 102 extending in the radial direction 6 on the end face 100 of the socket-like conical contact 82, whereby the inner contour 104 of the groove 102 corresponds to the outer contour 106 of the lamellar tongue 76. The grooves 102 are distributed in the circumferential direction 24 on the end face 100 so that the position 108 of the groove 102 corresponds in each case to the position 110 of the associated lamellar tongue 76.

[0055] Additionally or alternatively, the socket-like conical contact 82 can have at least one embossment 112 on the end face 100, which protrudes radially inward beyond the inner peripheral surface 114 of the socket-like conical contact 82 into the receptacle 86 of the inner cone 88. FIG. 4 shows an example of a socket-like conical contact 82 having four such embossments 112, each having a biconvex protrusion 116. It can be seen that the biconvex protrusions 116 protrude into the receptacle 86 and support the conical contact spring sleeve 1 in the axial direction 12. Thus, forces acting on the conical contact spring sleeve 1 against the axial direction 12 can be absorbed, and the conical contact spring sleeve 1 can be fixed. For this purpose, a radial protrusion 56, for example formed as a nose-shaped protrusion 118, is provided on the conical contact spring sleeve 1, said protrusion being arranged on one of the two rings 22a, 22b, in particular at the axial end 28 of the conical contact spring sleeve 1, at a position 122 corresponding to the position 120 of the embossment 112.

[0056] The conical contact spring sleeve 1 can also be removably mounted on a plug-like conical contact 90. For this purpose, the outer cone 92 of the plug-like conical contact 90 can have at least one outwardly protruding embossment, which supports at least one radial recess of the conical contact spring sleeve 1 in the axial direction 12. Additionally, at least one lamellar tongue 76 of the conical contact spring sleeve 1 can be directed inward and protrude into a slot of the plug-like conical contact 90 extending perpendicular to the axial direction 12.

[0057] 5 and 6 each show a possible embodiment of an electrical plug connection 4 according to the present invention, comprising an electrical connector 2 according to the embodiment described above and a mating connector 124 having a conical mating contact 126 at the same angle to the conical contacts 82, 90 of the connector 2, where the mating contact 126 has a conical shape 10 complementary to the conical shape 8 of the conical contacts 82, 90. Optionally, the conical contacts 82, 90, the conical contact spring sleeve 1 and / or the mating contact 126 can be at least partially lubricated.

[0058] Preferably, the conical contacts 82, 90 and the mating contact 126 are capable of forming a self-locking connection 128. In the exemplary embodiment shown, this is achieved by forming the conical shapes 8, 10 such that the half angle 130 of the cone angle 132 is less than the friction angle, whereby the friction angle results from the inverse tangent of the coefficient of static friction between the conical contacts 82, 90 and the mating contact 126. For example, the friction angle results from the inverse tangent of the coefficient of static friction between the inner peripheral surface 114 of the socket-like conical contact 82 and the outer peripheral surface 136 of the plug-like mating contact 126.

[0059] 5 shows the conical contact spring sleeve 1 having a plurality of spring portions 138, which are flexible in the axial direction 12 and the radial direction 6. Each of the flexible spring portions 138 is formed by a web 16 of the conical contact spring sleeve 1. When the conical contacts 82, 90 and the mating contact 126 are slid relative to one another along an insertion direction 140, preferably parallel to the axial direction 12, the flexible spring portions 138 are deformed. More precisely, the flexible spring portions 138 are compressed and expanded between the inner peripheral surface 114 of the socket-like conical contact 82 and the outer peripheral surface 136 of the plug-like mating contact 126. This can be seen, for example, in FIG. 6.

[0060] By stretching the flexible spring portion 138, a preload is built up, which ensures reliable electrical contact between the conical contacts 82, 90 and the mating contact 126. The electrical contact can occur particularly at a point-like or area-like contact region 144 of the electrical connector 2 and the mating connector 124 in the mated state 142. Optionally, the contact region 144 can be provided with a coating, for example a silver coating.

[0061] In the mated state 142, the conical contacts 82, 90 and the mating contact 126 are each in an end position 146. The end position 146 is characterized by the conical contacts 82, 90 and the mating contact 126 being in an abutment 148, or by the presence of a self-locking connection 128.

[0062] 6, the socket-like conical contact 82 can be welded to at least one conductor 150 of an electrical cable 152, e.g., a shielded cable 154. The plug-like mating contact 126 can be screwed to at least one conductor 156, e.g., a busbar 160, of an electrical rail 158 by means of a threaded connection 162. Alternative connection types, such as solder and / or crimp connections, can also be used. The arrangement of the cable-side and rail-side conical contacts can also be reversed.

[0063] 6 further illustrates that the axial end 28 of the conical contact spring sleeve 1 can be positioned flush with the insertion opening 164 of the receptacle 86. In particular, the outer edge 166 of one of the two rings 22a, 22b of the conical contact spring sleeve 1 is flush with the inner edge 168 of the insertion opening 164.

[0064] Alternatively, there can be an offset between the outer edge 166 and the inner edge 168. This can be seen in Figure 4. For example, the lamellar tongue 76 of the twist stop 74 can have a bend radius that extends beyond the outer edge 166 against the axial direction 12, so that the conical contact spring sleeve 1 is positioned deeper within the receptacle 86 than the inner edge 168. [Explanation of symbols]

[0065] 1 Contact spring sleeve 2 Electrical Connectors 4 Electrical plug connector 6 Radial 8 Cone Shape 10 Complementary conical shapes 12 Axial Direction 14 hollow truncated cone 16, 16a, 16b Web 18 Axial component 20 Radial component 22a, 22b rings 24 Circumferential direction 26 End 28 Axial end 30a, 30b circular ring 32a, 32b Polygonal ring 34 Open Points 36a, 36b connection piece 40, 40a, 40b bent edges 42 Inner 44 Exterior 46 Bent Edge 48 Small face 50 Radial concave portion 52 Inner surface 54 Inner cone surface 56 Radial convex portion 58 Outer surface 60 outer cone surface 62 Curved Shape 64 semi-cylindrical section 66 Bulging part 68 contact points 70 Contact surface 72 Domed Knob 74 Twist prevention 76 Lamellar tongue 78 outer edge 80 Perforated bends 82 Socket-shaped conical contact 84 Cylindrical sleeve shape 86 Receptacle 88 Inner Cone 90 Plug-shaped conical contact 92 outer cone 94 pin contact 96 Axial end 98 hollow 100 End face 102 slots 104 Inner Contour 106 Outer contour 108 positions 110 position 112 Emboss 114 Inner surface 116 Biconvex protrusion 118 Snout-like convex part 120 positions 122 positions 124 Mating Connector 126 Counterparty Contact 128 Self-locking connection 130 half-width characters 132 Cone angle 136 Outer surface 138 Spring section 140 Insertion direction 142 Inserted state 144 Contact area 146 End position 148 Contact part 150 conductors 152 Electrical Cable 154 Shielded Cable 156 Conductor 158 Electric Rail 160 Busbar 162 Threaded connection 164 Insertion opening 166 outer edge 168 Inner edge

Claims

1. A conical contact spring sleeve (1) for a plug- or socket-type conical contact (82, 90), comprising: The contact spring sleeve (1) has a plurality of webs (16), each having a radially concave portion (50) that projects radially inward beyond an inner peripheral surface (52) of the contact spring sleeve (1) and a radially convex portion (56) that projects radially outward beyond an outer peripheral surface (58) of the contact spring sleeve (1); The radial concave portions (50) and the radial convex portions (56) are alternately arranged along the circumferential direction (24), The contact spring sleeve (1) has two rings (22a, 22b), The rings (22a, 22b) are each located at an axial end (28) of the contact spring sleeve (1); The web (16) extends in the axial direction (12) between the two rings (22a, 22b), one or both of the two rings (22a, 22b) have second radial concave portions (50, 72) that protrude radially inward on the inner surfaces (42) of the rings (22a, 22b) and second radial convex portions (56, 72) that protrude radially outward on the outer surfaces (44) of the rings (22a, 22b), the second radial concave portions (50, 72) and the second radial convex portions (56, 72) being provided to correspond to the web (16); The second radial concave portions (50, 72) and the second radial convex portions (56, 72) are each formed in a dome shape and are arranged alternately along the circumferential direction (24).

2. 2. A conical contact spring sleeve (1) according to claim 1, wherein said web (16) extends in said axial direction (12).

3. 3. The conical contact spring sleeve (1) according to claim 1 or 2, wherein the radial recess (50) and the radial protrusion (56) provided on the web (16) are spaced apart from the rings (22a, 22b).

4. A conical contact spring sleeve (1) according to any one of claims 1 to 3, wherein the web (16) is in the form of a thin plate or a leaf spring.

5. 5. The conical contact spring sleeve (1) according to claim 1, wherein the web (16) extends in the axial direction (12) between the two rings (22a, 22b), and both ends (26) of each of the webs (16) in the axial direction (12) are connected to the rings (22a, 22b), so that each of the webs (16) is supported at both ends by the rings (22a, 22b), and the radial concave portions (50) and the radial convex portions (56) provided on the web (16) are arranged alternately along the axial direction (12).

6. An electrical connector (2) having a plug- or socket-like conical contact (82, 90) and a contact spring sleeve (1) according to any one of claims 1 to 5.

7. 7. The electrical connector (2) of claim 6, wherein the contact spring sleeve (1) is constrainedly attached to the conical contacts (82, 90).

8. 8. An electrical plug connection (4) comprising the connector (2) according to claim 6 or 7 and a mating connector (124) having conical mating contacts (126), wherein the conical contacts (82, 90) of the connector (2) and the mating contacts (126) of the mating connector (124) are electrically connected via the conical contact spring sleeve (1).

9. 9. The electrical plug connection (4) according to claim 8, wherein the conical contacts (82, 90) of the connector (2) and the mating contacts (126) of the mating connector (124) are connected in a self-locking manner.

10. 10. The electrical plug connection (4) according to claim 8 or 9, wherein the conical contacts (82, 90) of the connector (2) are lubricated, and / or the conical contact spring sleeve (1) is lubricated, and / or the mating contacts (126) of the mating connector (124) are lubricated.

11. 11. The electrical plug connection (4) according to any one of claims 8 to 10, wherein the contact spring sleeve (1) of the connector (2) has at least one spring portion (138) that is flexible in the radial direction (6) and / or the axial direction (12).

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