EP3453077B1 - Radial jack - Google Patents

Description

The invention relates to an electrical connector socket which is designed as a radial contact socket and has several longitudinal contact elements for contacting a corresponding plug pin and a sleeve surrounding the longitudinal contact elements.

Furthermore, the present invention relates to a method for producing an electrical connector socket shaped with a plurality of longitudinal contact elements for contacting a corresponding plug and with a socket sleeve surrounding the longitudinal contact elements.

In the US 2002/0187686 A1 a socket is shown with a T-shaped connection and the production of a lamellar contact, consisting of a lamellar cage and a rolled contact holder, which are twisted in a complex manner and with the help of various aids in a kind of "hourglass shape".

Also in the U.S. 4,657,335 describes a bushing which is formed by a relatively rotational movement of the ends of a lamellar cage in a sleeve. To fix the lamellar cage in the sleeve, rings are slipped over the respective ends of the sleeve.

The US 2003/0068931 A1 shows an electrical connector socket comprising an essentially cylindrical socket sleeve which is provided with recesses at its front ends in order to fasten a hyperbolically rotated lamellar cage with its connecting tongues on or in these recesses.

From the DE 10 2011 105 821 B4 an electrical connector socket is also known with a cylindrical socket sleeve, the socket sleeve with a receiving space in which a hyperbolically rotated lamellar cage is attached and the socket sleeve has a first and second end face and the lamellar cage with connecting tongues on the first and second end face of the socket sleeve this is positively connected and that openings are made in the transition area between the socket sleeve and the connecting tongue and that at least one of the connecting tongues of the lamellar cage protrudes through one of the openings.

The solutions known in the prior art all have the disadvantage that the production of the contact elements is very complex, and in particular the geometrical dimensions of sleeves, end sleeves and a lamellar cage must be coordinated with one another. Due to the manufacturing process, there is an undesirable tolerance field, which raises considerable practical problems. High-precision tubes have to be used regularly for the sleeve, since the inner tube of the lamellar cage must fit into the tubular shape of the surrounding sleeve and the surrounding sleeve may have to be inserted into another sleeve receptacle and fastened there. Since precision tubes can typically be further processed by turning them off in such a way that the desired tolerances can be achieved, the cost of producing a contact system with such sleeves is not economically feasible.

Alternatively, the sleeves are manufactured in a roll bending process. The "dovetail connections" known in the prior art, which serve as connecting elements and are formed on opposite side edges of a sheet, make the manufacturing process complex.

If a sleeve is to be formed from sheet metal with such dovetail connections, a special joining movement of the tool is required. On the one hand, the sheet metal has to be rolled into a sleeve shape; on the other hand, the dovetail connections have to be joined together over different levels.

Such a dovetail connection is z. B. from the US 2002/0187686 A1 known. The production of a high-current contact element according to the method shown there is consequently expensive, complicated and not economical in order to produce large numbers of connectors.

There is also regularly a problem that the lamellar cage is twisted in the sleeve, so that holding devices must be created between the sleeve and the lamellar cage in order to fix the cage in the sleeve so that it can rotate on the one hand and to engage the cage with a tool on the other hand to twist this around its central axis, so that the contact lamellas are constricted inside.

A further very significant problem are those contact systems in which a cylindrical, in particular cylindrical, rolled contact grid is attached to both ends of the collar webs in the sleeve surrounding the contact grid and is thus clamped on both sides.

As a rule, generic connector sockets therefore comprise an inserted contact grid, which is connected to the sleeve by means of complex material-locking joining processes (such as welding, for example).

Furthermore, the sleeve itself will often also have to be curved, since the dovetail connections do not provide sufficient support.

In the case of a conventional fixed contact grid, a large number of other problems arise in use, since the contact system is mechanically overdetermined due to an excessive number of holding points. This results in increased loads at both clamping points during the plugging process and during later operation due to vibration, acting forces and thermomechanical effects, since the contact, especially after inserting a corresponding pin, is clamped in such a way that it cannot avoid any of the aforementioned forces, so to speak .

The object of the present invention is therefore to overcome the aforementioned disadvantages and to manufacture a plug connector socket in a much simpler and more economical manner, the number of components being reduced at the same time and in particular the production speed being able to be significantly increased.

The invention is achieved by a method according to the features of claim 1 and a connector socket with the features of claim 10.

The basic idea of the present invention is not to produce the cylindrical sleeve by means of a dovetail connection in an overlap assembly, as is known in the prior art, but to provide a joining contour from several specifically shaped joining elements on both butting edges of a sheet, so that no overlap assembly (as in a puzzle), but a joint assembly by moving the front edges of the sheet metal to be formed together with a forming movement.

1. a. Herstellen eines im Wesentlichen flachen Blechteils bestehend aus zwei Endabschnitten und einem dazwischen liegenden Mittelabschnitt (einstückig), wobei das Blechteil zwei jeweils von dem einen zu dem gegenüberliegenden Endabschnitt verlaufendes Längsseitenkanten und je eine Querseitenkante an einem der beiden Endabschnitte aufweist, welche die Endabschnitte begrenzt, wobei jeweils in Verlängerung der Längsseitenkanten zwei Haltearme stirnseitig aus der einen Querseitenkante des Blechsteils und zwar von dem einen Endabschnitt hervorstehen, wobei die Haltearme an ihrem jeweiligen freien Haltearmende eine Rastnase aufweisen zum Eingriff in einen Hinterschnitt, der jeweils als korrespondierende Ausnehmung in dem gegenüberliegenden Endabschnitt des Blechs ausgebildet ist;
2. b. Einbringen je einer Sollbiegestelle für die Haltearme in die jeweilige Längsseitenkante im Bereich des jeweiligen Haltearms;
3. c. Rollen des Blechteils zu einer zylindrischen Buchsenhülse, wobei die am Endabschnitt des Blechteils angebrachten Haltearme beim Auftreffen bzw. beim Zusammentreffen mit der korrespondierenden Stirnseite des gegenüberliegenden Endabschnitts dieses Blechteils bestimmungsgemäß um die zuvor eingebrachte Sollbiegestelle herum zunächst nach Außen ausfedern und/oder aufgebogen werden, bis die Rastnasen der Haltearme in die korrespondierende Ausnehmung am entsprechenden Endabschnitt ein Stück weit einfedern.

According to the invention, a method for producing an electrical connector socket is therefore proposed, comprising a cylindrical socket sleeve, the socket sleeve being designed with a receiving space in which a cylindrical contact lamella grid with a plurality of contact lamellae running parallel is inserted, with the following method steps:

1. a. Manufacture of an essentially flat sheet metal part consisting of two end sections and a central section (in one piece) between them, the sheet metal part having two longitudinal side edges each running from one end section to the opposite end section and one transverse side edge each at one of the two end sections, which delimits the end sections, with In each case in extension of the longitudinal side edges, two holding arms protrude at the end of one transverse side edge of the sheet metal part, namely from the one end section, the holding arms having a locking lug at their respective free holding arm end for engaging an undercut, which is each as a corresponding recess in the opposite end section of the sheet metal is trained;
2. b. Introducing a predetermined bending point for each of the holding arms in the respective longitudinal side edge in the area of the respective holding arm;
3. c. Rolling of the sheet metal part into a cylindrical bushing sleeve, the holding arms attached to the end section of the sheet metal part initially springing outward and / or being bent open when they strike or when they meet the corresponding end face of the opposite end section of this sheet metal part around the previously introduced predetermined bending point, until the Compress the locking lugs of the retaining arms a little way into the corresponding recess on the corresponding end section.

In other words, this means that when the sheet metal part is rolled up to form the bushing sleeve, the holding arms are forced to bend up in that they run onto corresponding control cams on the opposite side, ie the opposite end section of the sheet metal part. As soon as these are bent up and have come into their intended position, namely fixing position, the retaining arms spring back a little with their locking lugs so that the locking lugs engage in the corresponding undercut on the opposite side.

In a preferred embodiment of the invention it is provided that, to carry out the aforementioned step c), the intended bending point is attached to the spring arms by means of a recess or a notch in the respective longitudinal side edge, namely in the area of the spring arms themselves, preferably at a point on the Long side edge, which lies at the intersection of the extension of the transverse side edge and the respective long side edge, thus at the connection point of the spring arm itself. In this way, the spring arm can be bent a little way out of its originally established position around its connection point on the transverse side edge when rolling up the sheet metal part to ensure that the front edges can be moved towards each other at a single mounting height.

This has the particular advantage that a much simpler tool can be provided for producing the stamping / bending process. Since the rolling process can be designed in such a way that when the end sections of the sheet metal part produced for this purpose are rolled together they are moved towards one another and indeed can be moved towards one another within an assembly, there is no step in which, for. B. an overlapping or underlapping of one of the end sections must take place in order to then thread this in a complex sequence of movements into a corresponding counter-contour, such as, for. B. a dovetail notch.

According to the idea of the present invention, the front sides can therefore be brought together in a simple manner, in which the retaining arms first spring open and then engage with their end section designed for locking in corresponding counter-locking recesses on the opposite side.

In a further advantageous embodiment, the method is provided in such a way that the sheet metal part is shaped in such a way that the respective holding arm is formed from an elongated arm section, on the respective free holding arm end of which a latching lug pointing in the direction of the other holding arm is formed. These have an inclined side edge which serves as a control surface for interacting with a corresponding edge surface of the opposite transverse side edge.

• die Breite dieses Endabschnittes ist im Bereich der Stirnseite geringer ausgebildet als die Breite im Mittelabschnitt des Blechteils und
• an den Ecken der Stirnseite der Querseitenkante dieses Endabschnitts sind Haltelappen, vorzugsweise in etwa in Trapezform vorgesehen oder zumindest teilweise trapezförmig, welche je eine schräg verlaufende, jeweils nach Außen gerichtete Seitenkante ausbilden, welche zum Zusammenwirken mit den zuvor erwähnten schrägen Stirnseitenkanten der Haltearme bzw. der Rastnasen dieser Haltearme dienen.

It is also advantageously provided if the method is designed in such a way that when the sheet metal part is manufactured, the end section, specifically that end section which does not carry out the holding arms, is shaped as follows:

• the width of this end section is made smaller in the area of the end face than the width in the middle section of the sheet metal part and
• At the corners of the end face of the transverse side edge of this end section, retaining tabs are provided, preferably approximately in a trapezoidal shape or at least partially trapezoidal, which each form an inclined, outwardly directed side edge which interacts with the aforementioned inclined front side edges of the retaining arms or the Latches of these retaining arms are used.

In a further advantageous embodiment of the method according to the invention, it is provided that when the end sections of the sheet metal part are connected, they are fed to one another at the end within an assembly plane and, when they meet, the holding arms of the end section are actuated outwards, as explained above, by opening them with their side edges the also previously mentioned front control edge impinge on the opposite end section.

It is also considered to be advantageous that after the aforementioned step c), the two holding arms are actuated, preferably plastically bent, by a tool with their locking lugs in the direction of the corresponding recesses, namely from an assembly position to a fixing position.

In other words, this means that after the rolling process, as soon as the latching lugs of the holding arms engage in the corresponding recesses on the opposite end section of the sheet metal, there is still little room for movement for the holding arms. For this purpose, within the scope of a plastic deformation of the holding arms, it can be provided that they are deformed or actuated from the aforementioned position into their end position (fixing position) either by means of a tool or when a tool is applied.

In this way, there is a form fit between the locking lugs and the corresponding recesses. In the fixing position, the latching lugs thus completely dip into the recesses on the opposite end section.

In a further advantageous embodiment of the invention it is provided that at least one, preferably two or more elevations are attached along one longitudinal side edge on the inside of the socket sleeve (e.g. embossings), which act as an end stop for an end face edge of a contact lamellar grid to be inserted into the socket sleeve serve.

Likewise, it can advantageously be provided that at least one, preferably two or more window-like recesses are made in the sheet metal part along the longitudinal side edge for immersing spring arms of the contact lamella grid in order to fix the contact lamella grid in the socket sleeve. In this way, it can be provided according to the invention that two strips are guided next to each other in a manufacturing process, the aforementioned sheet metal part from one metal strip or sheet metal strip being used to manufacture the cylindrical bushing sleeve, while the other sheet metal part is used to manufacture the contact lamellar grid. The lamellar contact grid can be inserted into the socket sleeve in such a way that its front end lies against the abovementioned stops, while at the same time the spring arms formed by the lamellar contact lattice dip into the aforementioned recesses in the sheet metal part of the socket sleeve.

In a further advantageous embodiment of the method according to the invention, it is provided that centering elements that correspond to one another are attached to the end faces of the end sections, each of which provides inclined side edges that experience or experience a forced guidance when they meet with the respective opposite centering element, so that automatic alignment the end sections take place when they are brought together, mind you, when they meet at the front within an assembly plane.

Another aspect of the present invention relates to an electrical connector socket.

According to the invention, therefore, an electrical connector socket is also proposed comprising a cylindrical socket sleeve, the socket sleeve being designed with a receiving space in which a cylindrical lamellar cage with a plurality of parallel contact blades is inserted, the cylindrical socket sleeve being formed from an essentially flat sheet metal part, consisting of two end sections and a middle section in between, the sheet metal part having two each of one of the longitudinal side edges running from the one to the opposite end section and one transverse side edge each, each delimiting one of the two end sections, with two holding arms extending from the front side of the transverse side edge of the sheet metal part from the end section as an extension of the longitudinal side edges protrude and wherein the holding arms have a locking lug at their respective free end of the holding arm, with which they are designed and engage in an undercut of the respective recess in the opposite end section of the sheet metal, a predetermined bending point by means of a recess in the longitudinal side edge in the area of the respective holding arm is provided.

Fig. 1

eine aufgewickelte Form eines Blechteils B gemäß einem Ausführungsbeispiel der vorliegenden Erfindung, aus dem eine zylindrische Buchsenhülse in erfindungsgemäßer Weise geformt wird;

Fig. 2

eine zylindrische Buchsenhülse während des erfindungsgemäßen Verfahrens in einem Zwischenschritt;

Fig. 3

die zylindrische Buchsenhülse aus Fig. 2 in einem weiteren Montageschritt;

Fig. 4

eine perspektivische Ansicht einer zylindrischen Buchsenhülse, hergestellt mit dem erfindungsgemäßen Verfahren.

Further refinements of the invention emerge from the patent claims as well as the figures and the associated description of the figures, the figures depicting the following:

Fig. 1

a wound shape of a sheet metal part B according to an embodiment of the present invention, from which a cylindrical bushing sleeve is formed in the manner according to the invention;

Fig. 2

a cylindrical socket sleeve during the method according to the invention in an intermediate step;

Fig. 3

the cylindrical socket sleeve Fig. 2 in a further assembly step;

Fig. 4

a perspective view of a cylindrical socket sleeve, produced with the method according to the invention.

In the following, the invention will be explained using an exemplary embodiment with reference to FIG Figures 1 to 4 explained in more detail, the same reference numerals indicating the same functional and / or structural features.

In the Fig. 1 is first shown a plan view of a developed sheet metal part B, from which the in Fig. 4 illustrated cylindrical bushing sleeve 2 is produced according to the method according to the invention described above.

The sheet metal part B consists of two end sections E1 and E2 and a middle section M in between. The sheet metal part also has two longitudinal side edges 20a, 20b, each extending from one to the opposite end section E1, E2, and one transverse side edge 21a, 21b, each of which is one of the two End sections E1, E2 limited.

As can also be seen, the sheet metal part B has an essentially rectangular basic shape, the transverse side edges 21a, 21b having a non-linear profile, which is described in more detail below.

As in the developed view of the Fig. 1 As can also be seen, two holding arms 22a, 22b protrude at the front from the transverse side edge 21a of the sheet metal part B, namely from the end section E1, as an extension of the longitudinal side edges 20a and 20b.

As can also be seen, the holding arms 22a, 22b have a locking lug 24 at their respective free holding arm ends 23a, 23b, which is designed to engage in an undercut 25, which will be described later, which is each as a corresponding recess 26 in the opposite end section E2 of the sheet metal is designed, as for example in the Figures 3 and 4 is easy to see.

This in Fig. 1 The sheet metal part B shown and described is preferably produced by means of a stamping process. During or after the production of this sheet metal part B, a predetermined bending point 27 is introduced in each of the longitudinal side edges 20a, 20b, specifically in the area of the holding arms 22a, 22b, as is also the case in FIGS Figures 1 to 4 is recognizable. The predetermined bending points 27 are provided here as small semicircular notches in the longitudinal side edges 20a, 20b. The sheet metal part B as described above is now rolled, ie by a bending process, to form a cylindrical bushing sleeve 2, as shown in FIG Fig. 2 is shown, reshaped. When the sheet metal part B is rolled or bent, the holding arms 22a, 22b attached to the end section E1 of the sheet metal part B are initially deflected outwardly or bent open when they meet the end face of the opposite end section E2 of the sheet metal part B, as intended, around the predetermined bending point 27 until the locking lugs 24 of said holding arms 22a, 22b in the corresponding recess 26, as in FIG Fig. 2 shown, compress a little.

When they are brought together, the tapering side edges 31 of the holding arms 22a, 22b or the latching lugs 24 of these holding arms 22a, 22b run onto the laterally tapered counter-contours on the opposite end section E2. As a result of the interaction with the corresponding inclined side edges running in opposite directions, the holding arms 22a, 22b are spring-loaded outwards and then spring back into their end position in the aforementioned recesses 26. This state is exemplified in the Fig. 2 shown in which the locking lugs 24 of the holding arms 22a, 22b dip a little into the recesses 26.

In the Fig. 3 shows how, after the aforementioned step, the two holding arms 22a, 22b are actuated by a tool with their locking lugs in the direction of the corresponding recess 26 from their assembly position to their fixing position and are preferably plastically deformed or bent.

Like in the Fig. 3 Shown with the two arrows, the holding arms are so to speak of the in the Fig. 2 position shown in the Fig. 3 The position shown is not elastically but plastically deformed, so that after removing the tools or the force, the holding arms remain in this position in which the locking lugs 24 protrude completely into the recess 26 and a form fit is formed between the locking lugs and the holding arms.

As also in the Fig. 1 As shown, the sheet metal part is shaped during its manufacture in such a way that the respective holding arm 22a, 22b is formed from an essentially elongated arm section 30, on whose respective free holding arm end 23a, 23b a latching lug 24 pointing in the direction of the other holding arm 22a, 22b is formed so that each holding arm 22a, 22b has an approximately L-shaped shape. On the locking lug 24 there is also a side edge 31 that tapers at an angle, as mentioned above, which serves as a control cam and specifically for interaction with a likewise tapered edge surface 34 of the opposite transverse side edge 21b.

How further in the Figures 1 to 4 As can be seen, the sheet metal part B is shaped so that the width of the end section E2 is smaller in the area of the end face than in the middle section M and that retaining tabs are provided at the corners of the end face of the transverse side edge 21a, 21b of the end section E2.

The retaining tabs have an approximately trapezoidal or tab-shaped shape, which in one piece directly adjoin the corners of the end section E2. These retaining tabs 39 each have a sloping, outwardly directed side edge 34 which, when interacting with the aforementioned sloping front side edges 31, serve to spring open the retaining arms 22a, 22b.

The sequence of rolling the sheet metal part B to the cylindrical bushing sleeve 2 is not shown in more detail, but can be described as follows.

The flat sheet metal part B is brought into a cylindrical shape by means of a tool in such a way that the end sections E1, E2 of the sheet metal part B are fed to one another at the end within a common assembly plane, so that the holding arms 22a, 22b of the end section E1 are actuated outwards when they meet, in which they impinge with their inclined side edge on the front control edge 34a at the opposite end section E2 and spring into the recesses 26 after reaching the final assembly position. In this position, the end faces of the transverse side edges 21a, 21b are already touching.

As further in the Fig. 1 As can be seen, the sheet metal part B is shaped in such a way that centering elements Z1, Z2 which correspond to one another are attached or are formed on the front side of the end sections E1, E2, which respectively provide inclined side edges which when they meet the respectively opposite centering element Z1 or Z2 is forced to move so that the end sections E1, E2 are automatically aligned when they are joined.

As further in the Fig. 4 As can be seen, two elevations 36 have been made on the inside of the socket sleeve 2, which serve as an end stop for an end face edge of a lamellar contact grid 3 to be inserted into the socket sleeve. The lamellar grid 3 is laterally from below in the Fig. 3 The cylindrical socket sleeve 2 shown is inserted until it strikes the abovementioned end stops 36 with its end face edge. When these stops are reached, spring arms of the contact lamellar grid 3, not shown in detail, snap into window-like recesses 37 made in the sheet metal part B and thus fix the contact lamellar grid 3 in the socket sleeve 2 in order to provide the connector socket 1 according to the invention as a whole.

The implementation of the invention is not restricted to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown even in the case of fundamentally different designs.

List of reference symbols

1

Connector socket

2

Socket sleeve

3

Contact lamellar grid

20th

Recording room

20a, 20b

Long side edges

21a, 21b

Transverse side edges

22a, 22b

Holding arms

23a, 23b

Holding arm end

24

Locking lug

25th

Undercut

26th

Recess

27

Predetermined bending point

30th

Arm section

31

Front edge

34

Control edge / side edge / edge surface

34a

Control edge

36

Surveys

37

Recess

39

Holding tabs

B.

Sheet metal part

E1, E2

End sections

M.

Middle section

Z1, Z2

Centering elements / centering edges

Δx

section

Claims (10)

1. Method for producing an electrical plug-in connector jack (1), comprising a cylindrical jack sleeve (2), wherein the jack sleeve (2) is designed with a receiving space (20) in which a cylindrical contact lamination lattice (3) with a plurality of contact laminations (31) which extend in parallel is inserted, having the following method steps:

   a. Producing an essentially flat sheet-metal part (B) consisting of two end sections (E1, E2) and a central portion (M) situated between them, wherein the sheet-metal part (B) has two longitudinal side edges (20a, 20b) which extend in each case from one end section (E1, E2) to the opposite end section (E1, E2), and in each case one transverse side edge (21a, 21b) which in each case delimits one of the two end sections (E1, E2), wherein, in each case in an extension of the longitudinal side edges (20a, 20b), two retaining arms (22a, 22b) protrude at the front of the end section (E1) from the transverse side edge (21a) of the sheet-metal part (B), wherein the retaining arms (22a, 22b) have, at their respective free retaining arm end (23a, 23b), a latching lug (24) for engagement in an undercut (25) which in each case is designed as a corresponding recess (26) in the opposite end section (E2) of the piece of sheet metal;

   b. Introducing an intended bending point (27) for each of the retaining arms (22a, 22b) in the longitudinal side edge (20a, 20b) outwardly delimiting the respective retaining arm (22a, 22b);

   c. Rolling the sheet-metal part (B) to form a cylindrical jack sleeve (2), wherein, when they bear against the front side of the opposite end section (E2) of the sheet-metal part (B) as intended, the retaining arms (22a, 22b) attached to the end section (E1) of the sheet-metal part (B) are first sprung and/or bent outward about the intended bending point (27) until the latching lugs (24) of the retaining arms (22a, 22b) spring some way further into the corresponding recess (26).
2. Method according to Claim 1, characterized in that, in order to perform step c) in Claim 1, an intended bending point (27) is applied to the spring arms by means of a recess or notch in the respective longitudinal side edge (20a, 20b) in the region of the retaining arms (22a, 22b), preferably at a point on the longitudinal side edge (20a, 20b) which lies at the point of intersection of the extension of the transverse side edge (21a, 21b) and the respective longitudinal side edge (20a, 20b).
3. Method according to Claim 1 or 2, characterized in that the sheet-metal part (B) is shaped such that the respective retaining arm (22a, 22b) is formed from an elongated arm section (30), on the respective free retaining arm end (23a, 23b) of which is formed a latching lug (24) which faces the other retaining arm and has a slanting side edge (31) which serves as a control surface for interaction with an edge surface of the opposite transverse side edge (21b).
4. Method according to one of the preceding claims, characterized in that, when the sheet-metal part (B) is produced, the end section (E2) is shaped as follows:
   the width of the end section (E2) is smaller in the region of the front side than in the central section (M), and retaining tabs, which in each case form an outwardly slanting side edge (34) and serve for interaction with the slanting front side edges (31) of the retaining arms (22a, 22b), are provided at the corners of the front side of the transverse side edge (21b) of the end section (E2).
5. Method according to one of the preceding claims, characterized in that, during the connection of the end sections (E1, E2) of the sheet-metal part (B), said end sections are moved toward each other at their front sides within an assembly plane and, when they are brought together, the retaining arms (22a, 22b) of the end section (E1) are pushed outward by their side edge (31) bearing against a front-side control edge (34) on the opposite end section (E2).
6. Method according to one of the preceding claims, characterized in that, after step c) in Claim 1, the two retaining arms (22a, 22b) are pushed with force applied by a tool, and preferably bent plastically, with their latching lugs toward the corresponding recesses (26), from an assembled position into a fixed position.
7. Method according to one of the preceding claims, characterized in that at least one, preferably two or more, raised portions (36) are formed along one longitudinal side edge (20a), on the inside of the jack sleeve (2), which serve as an end stop for a front side edge of a contact lamination lattice (3) which is to be inserted into the jack sleeve.
8. Method according to one of the preceding claims, characterized in that at least one, preferably two or more, window-like recesses (37) are introduced in the sheet-metal part (B), along the longitudinal side edge (20b), for spring arms of the contact lamination lattice (3) to dip into in order to fix the contact lamination lattice (3) in the jack sleeve (2).
9. Method according to one of the preceding claims, characterized in that in each case at the front of the end sections (E1, E2), mutually corresponding centering elements (Z1, Z2) are attached which in each case provide slanting side edges which, when they bear against the respective opposite centering element (Z1 or Z2), are guided under force such that the end sections (E1, E2) are automatically aligned when they are joined together.
10. Electrical plug-in connector jack (1), comprising a cylindrical jack sleeve (2), wherein the jack sleeve (2) is designed with a receiving space (20) into which a cylindrical laminated cage with a plurality of contact laminations (31) which extend in parallel is inserted, wherein the cylindrical jack sleeve (2) is formed from an essentially flat sheet-metal part (B) consisting of two end sections (E1, E2) and a central section (M) situated between them, wherein the sheet-metal part (B) has two longitudinal side edges (20a, 20b) which extend in each case from one end section (E1, E2) to the opposite end section (E1, E2), and in each case one transverse side edge (21a, 21b) which in each case delimits one of the two end sections (E1, E2), characterized in that, in each case in an extension of the longitudinal side edges (20a and 20b), two retaining arms (22a, 22b) protrude at the front of the end section (E1) from the transverse side edge (21a) of the sheet-metal part (B), wherein the retaining arms (22a, 22b) have, at their respective free retaining arm end (23a, 23b), a latching lug (24) by means of which said retaining arm end engages in an undercut (25) which in each case is designed as a corresponding recess (26) in the opposite end section (E2) of the piece of sheet metal, wherein an intended bending point (27) is provided by means of a recess (26) in the longitudinal side edge (20a, 20b) in the region of the respective retaining arm (22a, 22b).

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