EP3785333A1

EP3785333A1 - Socket body

Info

Publication number: EP3785333A1
Application number: EP19717339.6A
Authority: EP
Inventors: Lars BOLLIGER
Original assignee: Staeubli Electrical Connectors AG
Current assignee: Staeubli Electrical Connectors AG
Priority date: 2018-04-24
Filing date: 2019-04-17
Publication date: 2021-03-03
Also published as: WO2019206784A1; US11342701B2; CN112119541B; US20210151922A1; JP7269260B2; CN112119541A; JP2021522653A

Abstract

A socket body (1) comprises a socket space (3) which is delimited by a socket wall (2), extends along a centre axis (M) and is intended for accommodating a connector pin, wherein the socket space (3) has a socket opening (22), which is surrounded by an end surface (6) and via which the connector pin can be pushed into the socket space (3), wherein, as seen in the cross section transverse to the centre axis (M), an incision (4) extends through the socket wall (2) at an angle (α) to the centre axis (M) such that a spring lug (5) is formed, which spring lug (5) is bent into the socket opening (3), and wherein, as seen from the end surface (6) of the socket body (1), the incision (4) has a right-hand portion (7) and a left-hand portion (8), wherein a centre plane (ME) extends through the centre axis (M) centrally between said two portions (7, 8), characterized in that, as seen from the outer side of the socket body (1), an upper surface (16) of the incision (4) intersects exclusively the lateral surface (11) of the socket wall (2), but not the end surface (6).

Description

TITLE

FEMALE BODY

TECHNICAL AREA

The present invention relates to a socket body according to the preamble of claim 1 and a method for producing a corresponding socket body according to claim 15.

STATE OF THE ART

From the prior art socket body for electrical connectors are known. Such socket body have a socket opening into which a pin can be inserted. Between the outside of the pin and the inside of the socket opening an electrical contact is mediated.

FR 2 596 588 shows an example of such a socket body. The socket body has an indentation which extends from the front side into the socket body. This creates a tab which is bent towards the socket opening so that the cross-section of the socket opening is reduced. The tab is slightly springy and comes into contact with the pin. A disadvantage of the formation of the incision is that the tab can push away the plug pin from the insertion axis when inserting the connector pin. As a result, increased insertion forces are required to produce the electrical connector between the socket body and pin.

PRESENTATION OF THE INVENTION

Based on this prior art, the invention has for its object to provide a socket body, which overcomes the disadvantages of the prior art. In particular, it is an object of the present invention to provide a bushing body having a tab which has improved contact properties for a Pin creates.

This object is achieved by the subject matter of claim 1. Accordingly, a socket body comprises a bushing wall bounded by a bushing wall and extending along a central axis for receiving a plug pin. At least one incision extending in cross-section transverse to the central axis seen at an angle inclined at an angle to the central axis through the bushing wall through such that at least one spring tab is formed, which spring tab is bent into the socket space. Furthermore, the at least one incision, viewed from the end face of the socket body, has a right section and a left section, wherein a median plane extends centrally between these two sections through the central axis. An upper incision surface of the at least incision intersects exclusively the lateral surface of the socket body, but not the end face of the socket body.

Because the upper incision surface intersects only the lateral surface, but not the end surface, an incision can be provided which improves the spring characteristic of the spring tab. In particular, the spring characteristic can be improved to the effect that a greater force for the bending in of the spring tab in the socket opening is necessary and that a greater contact force can be provided on the plug in the socket opening.

In addition, the stiffness of the spring tab can be increased, because this can be made relatively shorter. This allows a higher number of mating cycles with the same spring characteristics and thus consistent contact properties.

Preferably, the incision is provided by a machining, in particular by a milling by means of a milling tool.

The angle is defined as the general angle of inclination of the incision. In particular, in the undeformed state of the spring clip. If the spring flap is therefore in the undeformed state, then the upper incision surface and the lower incision surface extend at the said angle. In the deformed state, the angle is at the lower incision surface detectable and the upper incision surface is slightly shallower to the central axis than the lower incision surface.

Depending on the design and number of spring tabs, the electrical contact is either

provided between the plug pin inserted into the socket space and between the surface of the socket space and the spring tab; or

provided between the inserted into the socket space pin and between the spring tab.

The spring tab is oriented with its free end to the socket opening. That is, the plug body when inserted into the socket space at a relatively low Einschi ebetiefe already comes into contact with the spring tab. As a result, the required insertion force increases abruptly, whereby a defined insertion procedure is made possible.

The number of cuts can be variable depending on the embodiment, which also varies the number of spring tabs. One spring tab is created per incision. It is possible that exactly one single incision is arranged. In other variants, two or three or four or more cuts and the corresponding number of spring tabs are conceivable. Preferably, the incisions are arranged distributed around the circumference of the socket body, wherein the distances between the incisions are each formed the same. It is also possible that a plurality of incisions are arranged spaced apart in the direction of the central axis.

Preferably, the incision is arranged such that a cylindrical guide path extending from the end face of the socket body into the socket space is formed for receiving the plug pin, which cylindrical guide track has an inner wall that completely surrounds the central axis. When viewed in the direction of insertion, the bushing opening first closes the cylindrical guide path, with the spring tab then protruding into the bushing space with further increasing depth into the bushing space. In other words, that the socket opening adjoins a cylindrical guide path, which leads the plug pin when inserted into the socket opening with its inner wall accordingly. This has the advantage that the center axis of the pin is collinear aligned with the central axis of the socket space before the pin meets the spring tab.

Preferably, the guide path seen from the end face of the socket body, a guide length which is between 5% and 100% or between 20% and 50% of the diameter of the socket space. In this length range, good results were achieved with regard to leadership.

Preferably, the socket body in the region of the spring tab on an outer recess extending from the lateral surface into the socket body into, wherein the recess is formed such that increases the flexibility of the spring tab. Particularly preferably, the recess is on the outside of the lateral surface opposite a region which is the lowest point of the incision arranged. Preferably, the outer recess is provided by a machining, in particular by a milling by means of a milling tool.

The recess weakens the spring tab as a whole, but has the advantage that with the size and / or shape of the recess, the spring property of the spring tab can be changed depending on the application. A change may be in particular the reduction of the stiffness of the spring tab.

Preferably, the outer recess has a flat recessed surface, which, viewed in cross-section, is oriented at an angle at an angle to the central axis. The flat recessed surface thus extends in a flat surface and forms a cylinder section.

Preferably, the recess surface extends partially into the socket space. Particularly preferably, the recess surface extends into the socket space such that a functional opening is created. The functional opening can serve, for example, as an inspection opening. About this inspection opening the complete and / or correct insertion of the pin can be checked. Alternatively, the function opening may serve to allow abrasion arising during the insertion process to be led away beyond the inspection opening. Preferably, the recess surface extends from the end face to the same incision depth as the at least one incision. Altematically, the recess surface extends from the end face to a shorter or greater depth than the incision depth of the at least one incision. By varying the depth of the cut surface, the spring property or flexibility can be changed.

The expression "depth of the recess surface" is to be understood as meaning the maximum extent of the recess surface in the direction of the central axis from the front side.

Preferably, the end portion of the recess surface is formed rounded at the lowest point of the recess with a rounding. The rounding then joins a transition surface, which merges into the lateral surface. By rounding the notch effect can be minimized in the end, whereby the spring tab is less susceptible to breakage.

Preferably, the outer recess has an end-side surface, wherein the end-side surface is preferably at an angle of substantially 90 ° to the recess surface. The end surface can connect directly to the recess surface or adjoins indirectly via the rounding of the recess surface.

Preferably, the notch is bounded on the upper side by the upper cut surface and on the underside by a lower cut surface, which cut surfaces preferably extend parallel to each other when the spring flap is unbent. The spring tab is preferably in the deformed state such that the upper cut surface comes into contact with its free end with the lower cut surface. Through this contact a simple, yet certain deformation of the spring tab is made possible in the Elerstellung of the socket body. Altematively, the spring flap in the folded state is preferably such that the upper cut surface does not come into contact with its free end with the lower cut surface.

The incision is thus essentially through the upper and the lower cut surface limited. The term top and bottom is to be understood in the context of the cut surfaces to the effect that the lower cut surface seen in cross section closer to the socket space than the upper cut surface.

Preferably, the recess surface is parallel to the incision surfaces of the incision, so that the spring tab has a constant thickness in the region of the recess surface at right angles to the recess surface. Altematically, the recess surface extends at an angle to the incision surfaces, in particular to the upper incision surface, of the incision, so that the spring flap, viewed in the region of the recess surface at right angles to the recess surface, has a variable thickness.

Preferably, the lower cut surface extends from the end face of the socket body into the socket body. This means that the incision extends from the lateral surface and the end face into the socket body. Altematically, the lower incision area can also extend from the lateral surface of the socket body into the socket body.

Preferably, the incision intersects the central axis seen in cross-section and thus extends below the central axis. This has the advantage that the thickness of the spring tab can be increased. Altematively, however, the incision may extend only above the central axis.

Further advantageous embodiments are characterized in that

in that the incision extends completely through the bushing body transversely to the central axis and parallel to its incision surfaces; and or

that the incision has an incision width which is less than 10% of the maximum incision depth in the direction of the central axis;

and or

that the incision seen in cross section with an angle of 2 ° to 45 °, in particular at an angle of 10 ° to 30 ° to the central axis. Preferably, the incision width is larger in socket bodies with larger diameters than in socket bodies with smaller diameters. That is, in a socket body having a large diameter, an incision having a larger incision width is provided, while in a socket body having a small diameter, an incision having a smaller incision width is provided.

These further advantageous embodiments have the particular advantage that the spring characteristics of the spring tab can be further optimized and adapted to the application.

Preferably, the incision has a recess base, which is rounded with a rounding, which connects the two cut surfaces together. Preferably, the center of the rounding of the right portion and the center of the rounding of the left portion lie in a common plane which is perpendicular to the median plane.

The incision preferably has side edges which have the shape of a part of an ellipse in a projection plane extending at right angles to the said center plane and extending through the central axis.

The recess preferably has a side edge which has the shape of a part of an ellipse in a projection plane extending at right angles to the said center plane and extending through the central axis.

Preferably, the said cut surfaces are part of a surface of a plane cylindrical section, which cylinder section is inclined at an angle to the central axis.

Preferably, said recess surface is part of a surface of a plane cylindrical section, which cylinder section is inclined at an angle to the central axis.

The recess surface and the said cut surfaces are preferably flat surfaces. A flat surface is understood to mean a surface which extends in a plane. In a method for producing a socket body as described above, the socket body is produced in a first step, and in a subsequent second step, the notch is produced with a milling tool, in particular with a disc milling tool. As a result, the socket body can be made very easily. In particular, the production of an incision by a milling tool is advantageous.

Also, the recess is preferably made with a milling tool, in particular with a Scheibenfräswerkzeug.

Particularly preferably, the Scheibenfräswerkzeug for producing the recess is preferably arranged on the same milling dome as the Scheibenfräswerkzeug for producing the incision. In this way, the incision and also the recess can be produced with a milling process.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1 is a perspective view of a socket body after a

Embodiment of the present invention;

Fig. 2 is a side view of the socket body of Figure 1;

Fig. 3 is a plan view of the socket body of Figure 1;

4 shows a sectional view along the section line A-A according to FIG. 3;

5 shows a detailed view of the socket body according to the preceding figures with a milling tool;

6a / 6b are views of a second embodiment of a socket body according to the present invention; Fig. 7a / 7b views of a third embodiment of a socket body according to the present invention;

Fig. 8a / 6b views of a fourth embodiment of a socket body according to the present invention; and

Fig. 9a / 9b views of a fifth embodiment of a socket body according to the present invention.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the figures, an embodiment of a erfmdungsgemässen socket body 1 is shown. The socket body 1 serves to receive a plug pin, not shown in the figures, wherein between the socket body 1 and pin an electrical contact can be produced. Typically, the socket body 1 in an electrically insulated housing, which is not shown in the figures, stored.

The socket body 1 comprises a limited with a socket wall 2 and extending along a central axis M bushing space 3 for receiving the plug pin. The pin is inserted into the socket space 3 and it is an electrical contact between the socket body 1 and the pin made. The socket space 3 has an end face 6 on the front side. The end face 6 surrounds a socket opening 22, via which the Steckerstifit in the socket space 3 can be inserted. In contrast to the end face 6, the socket body here comprises a contract section 24 which has an opening 25. The contract section 24 with its opening 25 serves to connect to another electrical element, such as a cable.

An incision 4 extends in cross-section transversely to the central axis M seen at an angle a angled inclined to the central axis M through the bushing wall 2. The angle a is the figures 2, 4 and 5 shown accordingly.

The incision extends in such a way through the socket wall 2, that a spring tab 5 is formed. The spring tab 5 is bent after making the incision 4 in the socket opening 3 or permanently deformed against the socket opening 3. The spring tab 5 essentially serves as a spring element, which acts on the inserted into the socket space 3 pin, so that between the inner wall 10 of the socket space 3 and the outside of the pin, an electrical contact can be made. In the figure 4 and the figures of the other embodiments, it is shown that the spring tab 5 protrudes into the socket space.

The angle a is defined as the general angle of inclination of the incision 4 in the undeformed state. If the spring tongue 5 is in the undeformed state, then the upper cut surface 16 and the lower cut surface 17 extend at said angle a. In the deformed state, the angle a on the lower cut surface 17 can be determined. The upper cut surface 16 extends due to the deformation of the spring tab 5 to the socket space 3 into something shallower than the angle a. The lower cut surface 17 extends at the angle a. The incision 4 is seen in cross section with an angle a of 2 ° to 45 °, in particular from 10 ° to 30 ° to the central axis M. That is, the under cut surface 17 at an angle of 2 ° to 45 °, in particular of 10 ° to 30 °, to the center axis M.

The incision 4 extends from the end face 6 of the socket body 1 with a right section 7 and a left section 8. The two sections 7, 8 are shown correspondingly in the perspective view of FIG. 1 and the plan view of FIG. A median plane ME extends centrally between the two sections 7, 8 through the central axis M. The center plane ME forms a plane of symmetry for the socket body 1.

An upper cut surface 16 of the incision 4 intersects, viewed from the outside of the socket body 1, exclusively the lateral surface 11 of the socket wall 2, but not the end face 6. Efierdurch, as explained above, an improved spring tab 5 can be provided.

The upper cut surface 16 has in the embodiment shown the shape of a flat cylinder section. The expression "plane cylinder section" is understood to mean a section which intersects a cylinder, in this case the socket body 1, on a plane inclined at an angle to the cylinder axis, in this case to the central axis M. The means, the upper cut surface 16 extends as a flat surface partially through the socket body. 1

The incision 4 is arranged such that one of the end face 6 of the socket body 1 in the socket space 3 hineinerstreckende guide path 9 is formed. The guide track 9 is cylindrical and serves to receive the plug pin during insertion of the same in the socket space 3. As a result, the plug pin in the region of the entry into the socket space 3 by the cylindrical guide path 9 which completely surrounds the pin, performed accordingly. The cylindrical guide path has an inner wall 10 which extends completely around the central axis M. In this case, the inner wall 10 is the inner wall 10 of the bushing space 3. The guide path 9, viewed from the end face 6, has a guide length L which is between 5% and 10% of the diameter D of the bushing space 3. Typically, a longer guide length is preferable. However, this is not always possible due to space limitations.

For easier insertion of the connector pin, the guide track may be conical or rounded in the region of the end face.

Next, the socket body 1 in the region of the spring tab 5 on a hineinerstreck of the lateral surface 11 in the socket body 1 outer recess 12. The outer recess 12 is formed such that increases the flexibility and / or the spring force of the spring tab 5. The increase is to be seen in the fact that the flexibility or the spring force in comparison to socket body without the recess

12 increased. In addition, can be varied by a variation of the formation of the recess, the degree of spring force or flexibility. The recess 12 has a flat recess surface 13, which are oriented at an angle ß angle inclined to the central axis M in cross-section. The angle ß corresponds approximately to the angle a of the incision 4; However, the angle β can also be steeper or shallower than the angle a.

As can be seen from Figures 1 and 3, the recess surface extends

13 partially into the socket space 3 inside. In particular, the extends Recess surface 13 in such a way in the socket space 3, that a functional opening 23 is created in the socket space 3. The functional opening may be an inspection opening, it being possible to detect through the inspection opening 23 whether the plug pin lies completely in the socket space 3. The function opening can also serve to derive derogatory abrasion, which may arise during the manufacture of the connector, from the bushing space 3.

The end portion 14 of the recess surface 13 has at the lowest point of the recess 12 a rounding 15. That is, the end portion 14 of the recess surface 13 is rounded with a rounded 15 formed. The rounding 15 closes here a recess 12 to the rear limiting end surface 27 at.

The incision 4 is bounded on the upper side by the upper incision surface 16 and on the underside by a lower incision surface 17. In the bent state of the spring tongue 5, the two cut surfaces 16, 17 parallel to each other. In the deformed state, the two cut surfaces 16, 17 are no longer parallel to one another, which is shown in greater detail in FIGS. 2 and 4.

In the deformed state, the spring tongue 5 is located such that the upper incision surface 16 preferably comes into contact with the lower incision surface 17 with its free end. This has the advantage that during the deformation, the spring tab 5 can be deformed until it comes into contact with the lower cut surface 17. It is a determined deformation process. In the case of the other embodiments, however, it is also conceivable that there is no contact between the upper incision surface 16 and the lower incision surface 17.

The recess surface 13 is parallel to the upper cut surface 16 in the embodiments shown in the figures. The spring tongue 5 therefore has a constant thickness T seen in the region of the recess surface 13 at a right angle to the recess surface 13. Alternatively, the recess surface 13 may not extend parallel to the upper cut surface 16. If the recess surface 13 is not parallel to the recess surface 13, the recess surface 13 extends at a steeper or shallower angle to the central axis M. In this case, the spring tab 5 no constant thickness T up.

The lower incision surface 17 extends, as shown in FIGS. 1 to 4, partially into the socket body 1 from the end face 6 of the socket body 1. That is, the end face 6 is cut with the cut surface 17 accordingly. However, the lower incision surface 17 is arranged such that it does not penetrate into the bushing space 3 in a region near the end surface 6, so that the cylindrical guide path 9 is not impaired by the lower incision surface 17.

The incision 4 is, as can be seen from the figure 2 and 4, arranged such that it intersects the central axis M seen in cross-section. In this case, the incision 4 extends partially below the central axis M. In the undeformed state, the incision 4 preferably has a constant clear width. In the deformed state, the clear width of the cut 4 decreases transversely to the central axis M as the distance from the end face 6 increases. The incision 4 can end in other variants also above the central axis M.

The incision 4 extends transversely to the central axis M, as shown in Figures 2 and 4, parallel to the cut surfaces 16, 17 completely through the socket body 1 therethrough. The incision 4 has an incision width B which is smaller than 20% of the maximum incision depth C. The incision depth is the maximum depth of the incision seen from the end face 6 ago.

Preferably, the recess surface 13 extends in the direction of the central axis M to the same depth A as the incision depth C of the at least one incision 4. Alternatively, the depth A of the recess surface 13 seen in the direction of the center axis M but also deeper or less deep than the incision depth C be.

The incision 4 has an incision base 18. The incision base 18 forms the end of the section 4 with respect to the entrance of the cut surface 16, 17 in the lateral surface or in the end face. The incision base 18 is formed rounded with a rounding 19 which connects the two incision surfaces 16, 17 with each other. Of the Center X of the rounding 19 of the right section 7 and the center X of the rounding 19 of the left section 8, lie in a common plane E, which is perpendicular to the said center plane ME.

The incision 4 has side edges 20 which, in a plane perpendicular to the said center plane ME and extending through the central axis M, have the shape of a part of an ellipse. Equally, the recess 12 has a side edge 21, which also has the shape of an ellipse in said projection plane. Likewise, the two side edges 20, 21 also form a corresponding ellipse on the surface.

In the figure 5, the socket body 1 is shown with a corresponding tool. The tool here has the shape of a disk cutter. With a side milling cutter S4 can be in a simple manner, the incision 4 and a disc milling cutter S12 can be in a simple manner, the recess 12 produced. In particular, it is preferred in this context if the Scheibenfräswerkzeug S4 is arranged to produce the incision on the same Fräsdom FD as the Scheibenfräswerkzeug S12 for producing the recess 12th

Figures 6a and 6b show a second embodiment of the socket body 1. The same parts are provided with the same reference numerals and reference is made to the above description. In contrast to the first embodiment, the incision is formed here with a greater thickness and the lower cut surface 17 does not intersect the end face 6, but extends from the lateral surface 11 into the socket body 1 inside. Furthermore, the upper incision surface 16 extends from the side as far as below the central axis M. The flat recess surface 13 is not parallel to the upper incision surface 16.

Figures 7a and 7b show a second embodiment of the socket body 1. The same parts are provided with the same reference numerals and reference is made to the above description. In contrast to the previous embodiments, the angle a is steeper. Figures 8a and 8b show a third embodiment of the socket body 1. The same parts are provided with the same reference numerals and reference is made to the above description. In contrast to the previous embodiments, the outer recess 12 is formed larger.

Figures 9a and 9b show a fourth embodiment of the socket body 1. The same parts are provided with the same reference numerals and reference is made to the above description. In contrast to the previous embodiments, here two incisions 4 are arranged, which then form two incisions 4 also two spring tabs 5. In this embodiment, the lower incision surface 17 does not intersect the end face 6.

The contact between the socket body and plug takes place in the embodiments according to Figures 1 to 8b by the spring tab 5 and the inner wall 10 of the socket space 2. In the embodiment of FIGS. 9a to 9c, contacting takes place through the two spring tabs 5.

REFERENCE LIST Socket body 26 Free end Socket wall 27 End surface Socket space A Depth

Notch B incision width spring tab C incision depth end face D right section diameter L guide length left section T Thickness cylindrical guide path PE Projection plane Inner wall M Center axis Outer surface ME Center plane Outer recess X Center plane Recess surface a Angle

End area ß angle

Rounding S4, S12 Milling tools Upper cut surface p £> Milling dome lower cut surface

ward base

curve

side edge

socket opening

inspection opening

Contact section

opening

Claims

1. socket body (1) comprising a bushing wall (2) bounded and along a central axis (M) extending bushing space (3) for receiving a plug pin,

wherein the socket space (3) has a bushing opening (22) surrounded by an end face (6), via which the plug pin can be inserted into the bushing space (3),

wherein at least one incision (4) in cross-section transverse to the central axis (M) seen at an angle (a) extends at an angle inclined to the central axis (M) through the bushing wall (2), such that at least one spring tab (5) is formed , which spring tab (5) is bent into the bushing opening (3),

characterized in that an upper incision surface (16) of the at least one incision (4) from the outside of the socket body (1) exclusively the lateral surface (11) of the bushes wall (2) but not the end face (6) intersects.

2. socket body (1) according to claim 1, characterized in that exactly a single incision (4) or two incisions (4) or three incisions (4) or four incisions (4) are arranged; and / or that in the case of a plurality of incisions (4), the incisions (4) are distributed at regular intervals around the circumference of the socket body (1); and / or that a plurality of incisions (4) in the direction of the central axis (M) are arranged spaced from each other.

3. socket body (1) according to claim 1 or 2, characterized in that the at least one incision (4) is arranged such that one of the end face (6) of the socket body (1) in the socket space (3) hineinerstreckende cylindrical guide path (9) for receiving the plug pin is formed, which cylindrical guide path (9) has a completely around the central axis (M) encircling inner wall (10).

4. socket body (1) according to claim 3, characterized in that the guide path (9) of the end face (6) of the socket body (1) has a guide length (L), which between 5% and 100% of the diameter (D) of Socket space (3) is located, or which is between 20% and 50% of the diameter (D) of the socket space (3).

5. socket body (1) according to one of the preceding claims, characterized in that the socket body (1) in the region of the at least one spring tab (5) extending from the lateral surface (11) in the socket body (1) extending into the outer recess (12 ), wherein the recess (12) is formed such that increases the flexibility of the spring tab (5).

6. socket body (1) according to claim 5, characterized in that the outer recess (12) has a flat recess surface (13), which is seen in cross-section at an angle (ß) inclined at an angle to the central axis (M).

7. socket body (1) according to claim 6, characterized in that the recess surface (13) extends partially into the socket space (3) inside, in particular such that a function opening (23) in the socket space (3) is provided; and / or that the end region (14) of the recess surface (13) at the lowest point of the recess (12) is rounded with a rounding (15); and / or that the recess surface (13) extends from the end face (6) to the same depth (A) as the incision depth (C) of the at least one incision (4) or that the recess surface (13) extends from the end face Seen to a shorter or greater depth (A) than the incision depth (C) of the at least one incision (4) extends.

8. socket body according to one of the preceding claims 5 to 7, characterized in that the outer recess (12) has an end surface (27), wherein the end surface (27) preferably at an angle of substantially 90 ° to the recess surface (13 ) stands.

9. socket body (1) according to one of the preceding claims, characterized in that the at least one incision (4) is delimited on the upper side by the upper incision surface (16) and on the underside by a lower incision surface (17), which incision surfaces (16, 17) preferably extend parallel to one another when the spring flap (5) is unbent.

10. socket body according to claim 9, characterized in that the spring tab (5) in the deformed state is such that the upper cut surface (16) preferably comes with its free end (26) with the lower cut surface (17) in contact; or that the upper cut surface (16) does not come into contact with its free end (26), preferably with the lower cut surface (17).

11. socket body (1) according to one of claims 6 to 10, characterized in that the recess surface (13) parallel to the cut surfaces (16, 17), in particular to the upper cut surface of the incision (4), so that the spring tab ( 5) in the region of the recess surface (13) at right angles to the recess surface (13) seen a constant thickness (T).

12. socket body (1) according to one of claims 6 to 10, characterized in that the recess surface (13) at an angle to the incision surfaces (16, 17), in particular to the upper incision surface of the incision (4), so that the spring tab (5) in the region of the recess surface (13) seen at right angles to the recess surface (13) has a variable thickness (T).

13. socket body (1) according to one of the preceding claims 6 to 12, characterized in that the lower cut surface (17) from the end face (6) of the socket body (1) in the socket body (1) extends into it; or that the lower cut surface (17) extends from the lateral surface (11) of the socket body (1) into the socket body (1).

14. socket body (1) according to one of the preceding claims, characterized

the incision (4) intersects the central axis (M) in cross-section and extends below the central axis (M); and or that the incision (4) has a constant clearance in the undeformed state; and or

the incision (4) extends completely through the bushing body (1) as seen transversely to the central axis (M) and parallel to its incision surfaces (16, 17); and or

the notch (4) has an incision width (B) which is less than 10% of the maximum incision depth (C) in the direction of the central axis (M);

and or

that the incision (4) seen in cross-section with an angle (a) of 2 ° to 45 °, in particular at an angle of 10 ° to 30 °, to the central axis (M).

15. socket head (1) according to any one of the preceding claims, characterized in that the incision (4) has a recess base (18), which with a rounding (19) which connects the two cut surfaces (16, 17) together, rounded and that the midpoint (X) of the rounding (19) of right and left sections (7, 8) lie in a common plane (E) which is perpendicular to the median plane (ME) located midway between the two sections (E). 7, 8) through the central axis (M) extends lies.

16. socket body (1) according to any one of the preceding claims, characterized in that the incision (4) from the end face (6) of the socket body (1) seen from a right portion (7) and a left portion (8), wherein a median plane (ME) extends centrally between these two sections (7, 8) through the central axis (M), the notch (4) having side edges (20) perpendicular to said median plane (ME) and passing through said medial plane Central axis (M) extending therethrough projection plane (PE) seen in the form of part of an ellipse; and / or wherein the recess (12) has a side edge (21) which has the shape of a part of an ellipse in a projection plane (PE) extending at right angles to said center plane (ME) and extending through the central axis (A).

17. socket body (1) according to any one of the preceding claims, characterized in that said incision surfaces (16, 17) part of a surface of a plane cylinder section are, which cylinder section is angled inclined to the central axis (M) and / or that said recess surface (13) is part of a surface of a flat cylindrical section, which cylinder section is inclined inclined to the central axis (M).

18. A method for producing a socket body (1) according to any one of the preceding claims, characterized in that in a first step, the socket body (1) is produced, and that in a subsequent second step, the incision (4) with a milling tool, in particular with a Scheibenfräswerkzeug is produced.

19. The method according to claim 18, characterized in that the recess (12) with a milling tool, in particular with a Scheibenfräswerkzeug, and / or that the Scheibenfräswerkzeug (S12) for producing the recess (12) preferably on the same Fräsdorn (FD ) is arranged as the Scheibenfräswerkzeug (S4) for producing the incision (4).