Socket body

Abstract

To provide a socket body with a spring clip that provides improved contact characteristics for a plug pin.SOLUTION: A socket space has a socket opening (6) into which a plug pin can be pushed, a notch (4) extends such that at least one spring clip is formed, the spring clip is bent into the socket space, the spring clip having at least one recess (8) on both sides of which contact points (9) are formed for making contact with the plug pin, the spring clip has a wall (11) facing the socket space, the wall (11) has a reduced diameter region (21) and the recess (8) extends into the wall (11) in the reduced diameter region.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to a socket body according to the preamble of claim 1 and to a method for producing a corresponding socket body as claimed in claim 15. [Background technology]

[0002] Socket bodies for electrical plug connections are known from the prior art. Such socket bodies have a socket opening into which a plug pin can be pressed. Electrical contact between the socket body and the plug pin occurs between an outer surface of the plug pin and an inner surface of the socket opening.

[0003] EP 1 339 636 A1 discloses a socket body with a spring clip which protrudes into the socket space. The socket body according to EP 1 339 636 A1 has various disadvantages. The mechanical wear during the plugging operation is relatively high in the area of ​​the spring clip. Furthermore, the contact between the spring clip and the plug pin which is pressed into the socket space is not geometrically defined and therefore constitutes a disadvantage. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] U.S. Patent No. 2,280,027 Summary of the Invention

[0005] Due to this prior art, it is an object of the present invention to provide a socket body that overcomes the shortcomings of the prior art. In particular, it is an object of the present invention to identify a socket body with a spring clip that provides improved contact characteristics for the plug pins.

[0006] The subject matter of claim 1 solves this object. According to said claim 1, the socket body is a socket body with a socket space defined by a socket wall and extending along a central axis for receiving a plug pin. The socket space has a socket opening into which a plug pin can be pressed. At least one cut-out extends through the socket wall so that at least one spring clip is formed, the spring clip being bent into the socket space. On the front side, the spring clip has an edge facing the socket space. The spring clip has at least one recess, in particular exactly one recess, which is configured such that a contact position, preferably a contact point, for making contact with a plug pin pressed into the socket space is formed on both sides.

[0007] The recesses provide specific contact locations or points that improve electrical contact between the socket body and the plug pins.

[0008] Furthermore, the specific contact is advantageous for the actual contact process of pressing the plug pin into the socket space, since the mechanical wear in the area of ​​the edge can be reduced compared to edges without recesses. As a result, a higher number of plugging cycles are possible without changing the contact properties.

[0009] The arrangement of one recess is advantageous in terms of electrical contact, whereas in the case of large diameters having several recesses reduces especially the mechanical wear.

[0010] Preferably, at least one of the recesses is located in the center of the spring clip as viewed in the direction of the central axis, in other words, the recess is located in the center of the edge that defines the spring clip as viewed from the socket opening.

[0011] As a result, a symmetrical arrangement for the plug pin can be obtained in the direction of the central axis, which optimizes the forces during pressing in of the plug pin. Furthermore, the plug pin is easily centered in the socket space.

[0012] In a first embodiment, the spring clip has, on its front side, an edge facing the socket space, on which edge said recess is arranged.

[0013] In summary, the socket body according to the first embodiment is a socket body with a socket space defined by a socket wall and extending along a central axis for receiving a plug pin. The socket space has a socket opening into which a plug pin can be pushed. At least one cut-out extends through the socket wall in a cross section including the central axis at an inclination angle to the central axis, such that at least one spring clip is formed, which is bent into the socket space. On the front side, this spring clip has an edge facing the socket space. The spring clip has at least one recess, preferably just one recess, on the edge, which is configured such that on both sides a contact point is formed for making contact with a plug pin pushed into the socket space.

[0014] In addition to the advantageous electrical contact, possible edge burrs left on the spring clip due to manufacturing are removed, at least at the contact point where the spring clip contacts the plug pin, the burrs being removed by the recesses, this type of burr typically increasing mechanical wear.

[0015] At least one recess preferably completely interrupts the edge in the area of ​​this recess, i.e. due to the arrangement of the recess, there is essentially no longer an edge in the area of ​​this recess.

[0016] The at least one recess preferably extends into a front surface of the spring clip facing the socket opening and / or into a wall surface of the spring clip facing the socket opening.

[0017] In this case, the front surface is the surface that can be recognized when looking into the socket space through the socket opening.

[0018] The at least one recess particularly preferably extends into the front surface of the spring clip facing the socket opening and into the wall surface of the spring clip facing the socket opening, which ensures that the edge is reliably cut off during the manufacturing process.

[0019] Preferably, the at least one recess extends from the edge over the entire front surface, viewed transversely to the center line, or the at least one recess extends from the edge over a maximum half of the front surface, viewed transversely to the central axis, which direction transversely to the central axis may also be understood as a radial direction.

[0020] The contact points are preferably formed on the edges, in particular the contact points are located at each end point of the edge which makes the transition into the recess.

[0021] Preferably, a third contact point is provided by a surface of the socket wall opposite the central axis from the recess with the two contact points.

[0022] As a result, three contact points are formed, which are preferably located such that they are the vertices of an acute isosceles triangle, so that the contact points are connected to the plug pin in three positions.

[0023] Depending on the configuration of the surface of the socket wall, the third contact point is provided by a contact line, i.e. the third contact point is a part of the contact line.

[0024] The third contact point is preferably located between the two contact points provided by the recesses such that, viewed in the direction of the central axis, a line extending through the third contact point at a right angle to this central axis passes midway between these two contact points. As a result, a contact can be provided which is symmetrical with respect to the plug pin.

[0025] The incisions preferably extend at an inclined angle (α) to the central axis in a cross section including the central axis.

[0026] The cut preferably extends across a first section inclined at an inclination angle (α) to the central axis and extends across a second section parallel to the central axis.

[0027] If the angle α extends at a gentle gradient relative to the central axis, the second section can be omitted, if the angle α extends at a steep gradient relative to the central axis, the second section is advantageous for the spring action of the spring clip.

[0028] Preferably, said cut surface of a section extending at an angle to the central axis is preferably part of the surface of a flat cylindrical section extending at an oblique angle to the central axis.

[0029] However, the cuts may also be rounded cuts, which, due to their rounding, also extend at an oblique angle to the central axis in small sections.

[0030] Further optional and advantageous features of the socket body according to the first embodiment are described below.

[0031] The free end of the spring clip is directed towards the socket opening, i.e. the plug body contacts the spring clip early during pushing into the socket space and at a relatively shallow pushing depth. As a result, the required plugging force increases quickly, which allows for a specific pushing procedure. However, the free end of the spring clip may also be directed away from the socket opening.

[0032] The number of cuts can vary depending on the embodiment, which also changes the number of spring clips. This means that at least one further cut forms a further spring clip that is configured substantially identically to the first spring clip. In these variants, two or three or four or more cuts and a corresponding number of spring clips are possible. The cuts are preferably distributed and arranged in the circumferential direction of the socket body, with equal spacing between the cuts. It is also possible that several cuts are arranged spaced apart from one another in the direction of the central axis.

[0033] Depending on the configuration and number of spring clips, the electrical contact can be - provided between the plug pin pressed into the socket space and the spring clip and between a surface of the socket space and the spring clip, or - Provided between the plug pin pressed into the socket space and the spring clip.

[0034] Preferably, the cut-outs are arranged in such a way that a cylindrical guideway is formed for receiving the plug pin, which extends from the end face of the socket body into the socket space, and which has an inner wall that completely surrounds the central axis. As seen in the pushing-in direction, the socket opening is firstly adjacent to the cylindrical guideway and then, with further increase in depth into the socket space, the spring clip protrudes into the socket space. In other words, the socket opening is adjacent to a cylindrical guideway, which by its inner wall accordingly guides the plug pin during pushing into the socket opening. This has the advantage that the central axis of the plug pin is oriented collinearly with the central axis of the socket space before the plug pin comes into contact with the spring clip.

[0035] Preferably, the cutout is defined at the upper side by an upper cutout surface and at the lower side by a lower cutout surface, both cutout surfaces preferably extending parallel to each other when the spring clip is not bent. In the deformed state, the spring clip is preferably located such that the free end of the upper cutout surface contacts the lower cutout surface. A simple but nevertheless specific deformation of the spring clip is made possible by this contact during the manufacture of the socket body. Alternatively, in the deformed state, the spring clip is preferably located such that the free end of the upper cutout surface does not contact the lower cutout surface.

[0036] The cut is therefore substantially defined by an upper cut surface and a lower cut surface, with respect to which the terms upper and lower shall be understood in the sense that the lower cut surface is located closer to the socket space than the upper cut surface when viewed in cross section.

[0037] The cutout surfaces preferably each extend into the socket body through a side surface. In another embodiment, it is also possible for at least the lower cutout surface to extend into the socket body from an end surface of the socket body, i.e. the cutouts extend into the socket body from the side surface and the end surface.

[0038] A further advantageous embodiment is the cut extends completely through the socket body when viewed transversely to the central axis and parallel to the cut surface; and / or The cut has a cut width, viewed in the direction of the central axis, that is less than 10% of the maximum cut depth, and / or The incisions are positioned, when viewed in cross section, at an angle α of 30° to 60°, in particular at an angle of 40° to 50°, in particular at an angle of 45° to the central axis. It is characterized by the following.

[0039] Preferably, the cut width is larger in the case of a socket body having a larger diameter than in the case of a socket body having a smaller diameter, i.e. a cut having a larger cut width is provided in the case of a socket body having a larger diameter, whereas a cut having a smaller cut width is provided in the case of a socket body having a smaller diameter.

[0040] The recessed surface and the cut surface are preferably flat surfaces, where flat surfaces are understood to mean surfaces extending in one plane.

[0041] According to a second embodiment, the spring clip has a wall facing the socket space, the wall facing the socket space having a reduced diameter region, and the recess extends into the wall at the reduced diameter region.

[0042] Preferably, the reduced diameter region has a diameter smaller than the diameter of the socket opening. Particularly preferably, the wall extends conically after the cylindrical section adjacent the socket opening to the reduced diameter and then widens conically again. The recess is located at the transition between the two cones.

[0043] Preferably, said region has a minimum internal diameter and the recess extends through said minimum internal diameter, viewed in the direction of the central axis.

[0044] Preferably, at least two spring clips are provided, which are evenly distributed in the circumferential direction, and particularly preferably, at least three spring clips are provided, which ensure good centering and contact of the plug in the socket space.

[0045] Preferably, at least one spring clip is connected to the socket wall at each end, the reduced diameter region being located between two connection locations.

[0046] Preferably, in the second embodiment, the cut-outs run parallel to the central axis. The spring clip is provided with two cut-outs located on the sides of the spring clip.

[0047] The spring clip according to the second embodiment is preferably arranged in such a way that a cylindrical guideway is formed, which extends from the end face of the socket body into the socket space and has an inner wall completely surrounding the central axis, for receiving the plug pin. As seen in the pushing-in direction, the socket opening is firstly adjacent to the cylindrical guideway and then, with further increase in depth into the socket space, the spring clip protrudes into the socket space. In other words, the socket opening is adjacent to a cylindrical guideway, which by its inner wall accordingly guides the plug pin during pushing into the socket opening. This has the advantage that the central axis of the plug pin is aligned collinearly with the central axis of the socket space before the plug pin comes into contact with the spring clip.

[0048] Below, we describe some general features that may be optionally used in all embodiments.

[0049] The recess preferably extends over a circumferential angle of at most 25°, in particular at most 10° or at most 5°, relative to the circumferential direction of the socket space. This circumferential angle preferably depends on the diameter of the socket opening. In the case of a large diameter, the circumferential angle is preferably similarly large, and in the case of a small diameter, the circumferential angle is preferably similarly small.

[0050] The at least one recess may be produced by a variety of techniques.

[0051] In one embodiment, the at least one recess is provided by embossing. The recess can be formed, for example, by an embossing pin which is guided through the socket opening and through the socket space to the edge. By applying a corresponding force to the embossing pin, the edge is deformed, so that said recess is formed.

[0052] In another embodiment, the at least one recess is provided by deformation and / or machining of the edge.

[0053] In the case of machining, a corresponding tool, for example a deburring tool, is preferably guided into the socket space via the socket opening and then the edge is machined, so that the recess is formed.

[0054] Preferably, the socket space or socket opening defines a geometric enveloping cylinder having a circular cross section, the recess being located only inside the enveloping cylinder, which preferably has a diameter of the socket opening.

[0055] This has the advantage that the recess can be machined out of the socket opening when the spring clip is already bent.

[0056] During manufacture, preferably in a first step the socket body with the notch and the spring clip is manufactured, and preferably in a second step the recess is manufactured by guiding a tool for manufacturing the recess through the socket opening into the socket space up to the position of the edge.

[0057] The method for manufacturing the socket body described above is characterized in that in a first step, a socket body with a notch and a spring clip is manufactured, and in a second step, a recess is manufactured by guiding a tool for manufacturing a recess through the socket opening into the socket space to the position of the recess, or to the edge, or through the diameter structure.

[0058] Further embodiments are set forth in the dependent claims.

[0059] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings, which are merely for illustrative purposes and should not be construed as limiting. [Brief description of the drawings]

[0060] [Figure 1] FIG. 2 is a perspective view of a socket body according to a first embodiment of the present invention before a recess is disposed therein. [Diagram 2] 2 is another perspective view of the socket body shown in FIG. 1. [Diagram 3] FIG. 2 is the view shown in FIG. 1 after the recesses have been placed. [Figure 4] FIG. 3 is the view shown in FIG. 2 after the recesses have been placed. [Diagram 5] FIG. 5 is a front view of the socket body shown in FIGS. 3 and 4. [Figure 6] FIG. 5 is a cross-sectional view of the socket body shown in FIGS. 3 and 4. [Figure 7] FIG. 11 is a perspective view of a socket body according to a second embodiment of the present invention before a recess is disposed therein. [Figure 8] 8 is another perspective view of the socket body shown in FIG. 7. [Figure 9] FIG. 8 is the view shown in FIG. 7 after the recesses have been placed. [Figure 10] FIG. 9 is the view shown in FIG. 8 after the recesses have been placed. [Figure 11] FIG. 11 is a front view of the socket body shown in FIGS. 9 and 10. [Figure 12] FIG. 11 is a cross-sectional view of the socket body shown in FIGS. 9 and 10. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0061] 1 to 6 show a socket body 1 according to a first embodiment of the present invention, and FIGS. 7 to 12 show a socket body 1 according to a second embodiment of the present invention. The same parts are given the same reference symbols. The socket body 1 is made of a conductive material and is used to receive a plug pin (not shown). Electrical contact can be made between the socket body 1 and the plug pin.

[0062] 1-2 show the socket body 1 at intermediate steps during its manufacture, while Figs. 3-6 show the socket body 1 as finally manufactured.

[0063] The socket body 1 according to the two embodiments comprises a socket space 3, which is delimited by a socket wall 2 and extends along a central axis M for accommodating a plug pin. In the extension of this central axis M, the socket space 3 is adjoined by a contact section 19, which is connected to a further electrical conductor (not shown), for example a cable.

[0064] The socket space 3 has a socket opening 6 into which a plug pin can be pressed. In two embodiments, the socket body 1 has at least one cut-out 4 in the socket wall 2, by means of which a spring clip 5 is formed. The spring clip 5 according to the first embodiment has a free end 17, with which the spring clip 5 projects into the socket space 3. The spring clip 5 according to the second embodiment is connected at each end to the socket wall 2, with the spring clip 5 projecting into the socket space 3 at a wall surface 11 facing the socket space 3.

[0065] According to a first embodiment, the cut-out 4 extends through the socket wall 2 in a cross section containing the central axis M at an angle α to the central axis M, thus forming at least one spring clip 5 which is bent into the socket opening 3 and projects into the socket space 3. Between the spring clip 5 and a plug pin which is pressed into the socket space 3, an electrical contact can be made between the plug pin and the socket body 1.

[0066] The spring clip 5 has an edge 7 on the front side facing the socket space 3. This is the edge 7 with which the plug pin comes into contact during the push-in movement. After manufacturing of the socket body 1 and the spring clip 5, the edge 7 is a continuous edge, as is shown in Figures 1 and 2. The edge 7 therefore does not have any discontinuities. For manufacturing reasons it cannot be excluded that the edge 7 has burrs, which are detrimental to the push-in movement. This is the case especially with regard to wear and uncontrolled electrical contact.

[0067] According to the invention, the spring clip 5 has at least one recess 8, in particular exactly one recess 8, in the edge 7, which breaks off the edge 7 after its production. The recess 8 is shown in figures 3 to 6. The recess 8 is arranged in such a way that on each side of the recess 8 a contact point 9 is formed for contacting a plug pin which is pressed into the socket space 3. The contact point 9 is formed by the end of the edge 7 at the transition from the edge 7 to the recess 8.

[0068] The recess 8 shown in the figures is a recess 8 which extends from the front into the spring clip 5. That is to say, the recess 8 is arranged at the free end 17 of the spring clip 5. This free end 17 is the end which is not fixed. Opposite to the free end 17, a fixed end 18 of the spring clip is provided, via which the spring clip 5 is connected to the socket body 1. In the illustrated embodiment, the free end 17 is directed towards the socket opening 6, so that during the pushing-in movement, the plug pin first comes into contact with the free end 17, i.e. with the edge 7 and the recess 8. Then, during a further pushing-in movement, the plug pin is pressed in the direction of the fixed end 18.

[0069] The recess 8 is a mechanical recess, also called a depression or recess. The term "recess" is understood to mean a structure which extends into the spring clip 5 and provides a corresponding hollow, which can be made very small. When viewed from the front in the direction of the central axis M, the recess 8 is located in the center of the spring clip 5. This can be clearly seen in FIG. 5. In this case, the recess 8 is located directly above the central axis M. At least one recess 8 completely interrupts the edge 7 in the area of ​​this recess 8. That is to say, the edge 7 as shown in FIGS. 1 and 2 is completely interrupted by the recess, as shown in FIGS. 3 to 6. In the area of ​​the recess 8, the edge 7 is no longer present.

[0070] In the embodiment shown, the spring clip 5 has a front face 10, which is visible from the front through the socket opening 6, and a wall face 11 facing the socket space 3. In this case, the recess 8 extends into the front face 10 and into the wall face 11. It is therefore a recess 8 which starts from the edge 7 and extends both into the front face 10 and into the wall face 11. With respect to a radial direction Z transverse to the central axis M, the recess 8 either extends radially over substantially the entire front face 10 or, depending on the configuration of the spring clip 5, the recess 8 extends radially from the edge 7 over a maximum of half of the front face 10.

[0071] With respect to the circumferential direction of the socket space 3, the recess 8 extends over a circumferential angle β of at most 25°, in particular at most 10° or at most 5° in the circumferential direction. The recess 8 is therefore present over a very small area.

[0072] At least one recess 8 is preferably provided by embossing. The embossed portion may be produced by plastic working. In another embodiment, the recess 8 is provided by plastic working and / or machining of the edge 7.

[0073] As already mentioned, the contact point 9 is formed on the edge 7. In particular, the contact point 9 is provided in each case at an end point 12 of the edge 7 which makes the transition to the recess 8. Considering FIG. 5, it becomes clear that in the illustrated embodiment, a third contact point 13 is arranged opposite the recess 8 with respect to the central axis M. The plug pin electrically contacts the socket body 1 via the three contact points 9, 13. The third contact point 13 is essentially provided by a surface 14 of the socket wall 2 opposite the two contact points 9 or opposite the recess 8. The third contact point 13 may be point-like or linear.

[0074] Viewed in the direction of the central axis M, the third contact point 13 is located between the two contact points 9 in such a way that a line L extending through the third contact point 13 at a right angle to the central axis M passes midway between the two contact points 9 provided by the recess 8. In other words, a triangle is defined between the contact points 9, 13, which triangle is an acute triangle. By means of these three contact points an advantageous electrical contact with the plug pin can be achieved.

[0075] In another embodiment, another cutout may form another spring clip 5 configured substantially identically to the spring clip described above including the recess 8. For example, it is also possible for two spring clips 5 to be arranged opposite each other, or for more than two spring clips 5 to be arranged equiangularly spaced from each other. In this case, the third contact point is not provided by a surface of the socket space 3, but rather by an additional spring clip, i.e. a contact point 9 arranged laterally with respect to the recess 8.

[0076] The socket space 3 defines a geometric envelope cylinder with a circular cross section. In this case, the recess 8 is located exclusively inside the envelope cylinder. The envelope cylinder can be seen in FIG. 5. It is marked with the reference character H. Such an arrangement of the recess is advantageous, since the recess 8 can be formed by a tool that is fed through the socket opening 6.

[0077] As can be clearly seen from Fig. 6, the incision extends over a first section 15 inclined at an angle α to the central axis M. The incision 4 then extends parallel to the central axis M in a second section 16. Other shapes of incisions are also possible, for example curved incisions.

[0078] A second embodiment of the present invention is shown in Figures 7 to 12. The same parts are given the same reference numerals, and reference is made to the above description.

[0079] Figures 7 to 8 show the socket body 1 at intermediate steps during its manufacture, while Figures 9 to 12 show the socket body 1 as finally manufactured.

[0080] The second embodiment has at least one spring clip 5, which is fixedly connected with its two ends 20 to the socket body 1. In the embodiment shown, three spring clips 5 are arranged. The spring clip 5 projects radially into the socket space 3. Towards this, the spring clip 5 has a wall 11 facing the socket space 3. This wall 11 has a region 21 with a reduced diameter. In this region 21 with a reduced diameter, the recess 8 is arranged. In this case, the recess extends through the region 21 with a reduced diameter in the direction of the central axis M and extends radially into the wall 11. This results in two contact positions, in particular two contact points 9, being provided laterally to the recess in the narrowest part.

[0081] The reduced diameter region 21 has a diameter smaller than the diameter of the socket opening 6. In the embodiment shown, the wall 11 extends conically to a minimum diameter when viewed from the socket opening 6 and then widens conically again. In this case, the recess 8 is located in the region of the minimum diameter.

[0082] During pushing of the plug pin into the socket space 3, at least one spring clip is deflected transversely to the central axis M and away from it.

[0083] At least one spring clip 5 is provided with two cutouts 4 which lie parallel to each other and parallel to the central axis M. These cutouts 4 extend completely through the socket wall 2 from the outer surface.

[0084] 11 further shows the circumferential angle β of the recess. With respect to the circumferential direction of the socket space 3, the recess 8 extends in the circumferential direction over a circumferential angle β of at most 25°, in particular at most 10° or at most 5°. It is therefore a very small area in which the recess 8 is present. However, the angle may also be greater than 10°.

[0085] The cross-sectional view of Figure 12 shows that the recess 8 extends through the reduced diameter region 21. In this case, the recess 8 extends in the direction of the socket opening 6 and in the direction of the contact section 19 as viewed from the theoretically linear minimum diameter.

[0086] The method for producing the socket body 1 according to both above-mentioned embodiments is carried out as follows: In a first step, the socket body 1 with the incision 4 and the spring clip 5 is produced. In a second step, the recess 8 is produced. A tool for producing this recess 8 is guided through the socket opening 6 into the socket space 3 to the location of the recess. The tool can be a cutting tool or an embossing tool. [Explanation of symbols]

[0087] 1 Socket body 2 socket wall 3 Socket Space 4 Cutting 5 Spring Clip 6 Socket opening 7 Edge 8 Recess 9 contact points 10 Front 11 Wall 12 end points 13 The third contact point 14 Surface 15 The first division 16 The second division 17 Free end 18 Fixed end 19 Contact distinction 20 end 21 Fields H envelope pillar L Line M Center axis Z direction α Angle β angle

Claims

1. A socket body (1) having a socket space (3) defined by socket walls (2) and extending along a central axis (M) for receiving a plug pin, The socket space (3) has a socket opening (6) into which the plug pin can be pushed, At least one cut (4) extends through said socket wall (2) to form at least one spring clip (5), said spring clip (5) being bent into said socket space (3); said spring clip (5) having at least one recess (8), in particular exactly one recess (8), on both sides of which is formed a contact position, preferably a contact point (9), for making contact with a plug pin pressed into said socket space (3), The socket body (1), characterized in that the spring clip (5) has a wall surface (11) facing the socket space, the wall surface (11) facing the socket space (3) has a reduced diameter region (21), and the recess extends into the wall surface (11) in the reduced diameter region.

2. 2. The socket body according to claim 1, wherein the reduced diameter area (21) has a diameter smaller than the diameter of the socket opening (6).

3. 3. A socket body according to claim 1 or 2, characterized in that the region (21) has a minimum inner diameter and the recess (8) extends through said minimum inner diameter, viewed in the direction of the central axis (M).

4. 4. The socket body according to claim 1, further comprising at least two spring clips (5) arranged uniformly distributed around the periphery of the socket opening (6).

5. 5. A socket body according to claim 1, characterized in that at least one spring clip (5) is connected to the socket wall (2) at each end, the reduced diameter area (21) being located between two connection positions and / or the spring clip (5) is formed on both sides by cuts (4) extending parallel to the central axis (M).

6. The socket body (1) according to any one of claims 1 to 5, characterized in that at least one of the recesses (8) is located in the center of the spring clip (5) when viewed in the direction of the central axis (M).

7. The socket body (1) according to any one of claims 1 to 6, characterized in that the recess (8) extends over a circumferential angle (β) of at most 25°, in particular at most 10° or at most 5°, with respect to the circumferential direction of the socket space (3).

8. The socket body (1) according to any one of claims 1 to 7, characterized in that at least one of the recesses (8) is provided by embossing and / or at least one of the recesses (8) is provided by plastic processing and / or machining of the edge portion (7).

9. The socket body (1) according to any one of claims 1 to 8, characterized in that the socket space (3) or the socket opening (6) defines a geometrical envelope cylinder (H) having a circular cross section, and the recess (8) is located exclusively inside the envelope cylinder (H).

10. The socket body (1) according to any one of claims 1 to 9, characterized in that in a first step, the socket body (1) with the notch (4) and the spring clip (5) is produced, and in a second step, the recess (8) is produced by guiding a tool for producing the recess (8) through the socket opening (6) into the socket space (3) up to the edge (7).

11. A method for manufacturing a socket body (1) according to any one of claims 1 to 10, characterized in that in a first step, the socket body (1) with the notch (4) and the spring clip (5) is manufactured, and in a second step, the recess (8) is manufactured by guiding a tool for manufacturing the recess (8) into the socket space (3) through the socket opening (6) to the position of the recess.

Images